r_shadow.c

   1
   2 /*
   3 Terminology: Stencil Shadow Volume (sometimes called Stencil Shadows)
   4 An extrusion of the lit faces, beginning at the original geometry and ending
   5 further from the light source than the original geometry (presumably at least
   6 as far as the light's radius, if the light has a radius at all), capped at
   7 both front and back to avoid any problems (extrusion from dark faces also
   8 works but has a different set of problems)
   9
  10 This is normally rendered using Carmack's Reverse technique, in which
  11 backfaces behind zbuffer (zfail) increment the stencil, and frontfaces behind
  12 zbuffer (zfail) decrement the stencil, the result is a stencil value of zero
  13 where shadows did not intersect the visible geometry, suitable as a stencil
  14 mask for rendering lighting everywhere but shadow.
  15
  16 In our case to hopefully avoid the Creative Labs patent, we draw the backfaces
  17 as decrement and the frontfaces as increment, and we redefine the DepthFunc to
  18 GL_LESS (the patent uses GL_GEQUAL) which causes zfail when behind surfaces
  19 and zpass when infront (the patent draws where zpass with a GL_GEQUAL test),
  20 additionally we clear stencil to 128 to avoid the need for the unclamped
  21 incr/decr extension (not related to patent).
  22
  23 Patent warning:
  24 This algorithm may be covered by Creative's patent (US Patent #6384822),
  25 however that patent is quite specific about increment on backfaces and
  26 decrement on frontfaces where zpass with GL_GEQUAL depth test, which is
  27 opposite this implementation and partially opposite Carmack's Reverse paper
  28 (which uses GL_LESS, but increments on backfaces and decrements on frontfaces).
  29
  30
  31
  32 Terminology: Stencil Light Volume (sometimes called Light Volumes)
  33 Similar to a Stencil Shadow Volume, but inverted; rather than containing the
  34 areas in shadow it contains the areas in light, this can only be built
  35 quickly for certain limited cases (such as portal visibility from a point),
  36 but is quite useful for some effects (sunlight coming from sky polygons is
  37 one possible example, translucent occluders is another example).
  38
  39
  40
  41 Terminology: Optimized Stencil Shadow Volume
  42 A Stencil Shadow Volume that has been processed sufficiently to ensure it has
  43 no duplicate coverage of areas (no need to shadow an area twice), often this
  44 greatly improves performance but is an operation too costly to use on moving
  45 lights (however completely optimal Stencil Light Volumes can be constructed
  46 in some ideal cases).
  47
  48
  49
  50 Terminology: Per Pixel Lighting (sometimes abbreviated PPL)
  51 Per pixel evaluation of lighting equations, at a bare minimum this involves
  52 DOT3 shading of diffuse lighting (per pixel dotproduct of negated incidence
  53 vector and surface normal, using a texture of the surface bumps, called a
  54 NormalMap) if supported by hardware; in our case there is support for cards
  55 which are incapable of DOT3, the quality is quite poor however.  Additionally
  56 it is desirable to have specular evaluation per pixel, per vertex
  57 normalization of specular halfangle vectors causes noticable distortion but
  58 is unavoidable on hardware without GL_ARB_fragment_program or
  59 GL_ARB_fragment_shader.
  60
  61
  62
  63 Terminology: Normalization CubeMap
  64 A cubemap containing normalized dot3-encoded (vectors of length 1 or less
  65 encoded as RGB colors) for any possible direction, this technique allows per
  66 pixel calculation of incidence vector for per pixel lighting purposes, which
  67 would not otherwise be possible per pixel without GL_ARB_fragment_program or
  68 GL_ARB_fragment_shader.
  69
  70
  71
  72 Terminology: 2D+1D Attenuation Texturing
  73 A very crude approximation of light attenuation with distance which results
  74 in cylindrical light shapes which fade vertically as a streak (some games
  75 such as Doom3 allow this to be rotated to be less noticable in specific
  76 cases), the technique is simply modulating lighting by two 2D textures (which
  77 can be the same) on different axes of projection (XY and Z, typically), this
  78 is the second best technique available without 3D Attenuation Texturing,
  79 GL_ARB_fragment_program or GL_ARB_fragment_shader technology.
  80
  81
  82
  83 Terminology: 2D+1D Inverse Attenuation Texturing
  84 A clever method described in papers on the Abducted engine, this has a squared
  85 distance texture (bright on the outside, black in the middle), which is used
  86 twice using GL_ADD blending, the result of this is used in an inverse modulate
  87 (GL_ONE_MINUS_DST_ALPHA, GL_ZERO) to implement the equation
  88 lighting*=(1-((X*X+Y*Y)+(Z*Z))) which is spherical (unlike 2D+1D attenuation
  89 texturing).
  90
  91
  92
  93 Terminology: 3D Attenuation Texturing
  94 A slightly crude approximation of light attenuation with distance, its flaws
  95 are limited radius and resolution (performance tradeoffs).
  96
  97
  98
  99 Terminology: 3D Attenuation-Normalization Texturing
 100 A 3D Attenuation Texture merged with a Normalization CubeMap, by making the
 101 vectors shorter the lighting becomes darker, a very effective optimization of
 102 diffuse lighting if 3D Attenuation Textures are already used.
 103
 104
 105
 106 Terminology: Light Cubemap Filtering
 107 A technique for modeling non-uniform light distribution according to
 108 direction, for example a lantern may use a cubemap to describe the light
 109 emission pattern of the cage around the lantern (as well as soot buildup
 110 discoloring the light in certain areas), often also used for softened grate
 111 shadows and light shining through a stained glass window (done crudely by
 112 texturing the lighting with a cubemap), another good example would be a disco
 113 light.  This technique is used heavily in many games (Doom3 does not support
 114 this however).
 115
 116
 117
 118 Terminology: Light Projection Filtering
 119 A technique for modeling shadowing of light passing through translucent
 120 surfaces, allowing stained glass windows and other effects to be done more
 121 elegantly than possible with Light Cubemap Filtering by applying an occluder
 122 texture to the lighting combined with a stencil light volume to limit the lit
 123 area, this technique is used by Doom3 for spotlights and flashlights, among
 124 other things, this can also be used more generally to render light passing
 125 through multiple translucent occluders in a scene (using a light volume to
 126 describe the area beyond the occluder, and thus mask off rendering of all
 127 other areas).
 128
 129
 130
 131 Terminology: Doom3 Lighting
 132 A combination of Stencil Shadow Volume, Per Pixel Lighting, Normalization
 133 CubeMap, 2D+1D Attenuation Texturing, and Light Projection Filtering, as
 134 demonstrated by the game Doom3.
 135 */
 136
 137 #include "quakedef.h"
 138 #include "r_shadow.h"
 139 #include "cl_collision.h"
 140 #include "portals.h"
 141 #include "image.h"
 142 #include "dpsoftrast.h"
 143
 144 #ifdef SUPPORTD3D
 145 #include <d3d9.h>
 146 extern LPDIRECT3DDEVICE9 vid_d3d9dev;
 147 #endif
 148
 149 static void R_Shadow_EditLights_Init(void);
 150
 151 typedef enum r_shadow_rendermode_e
 152 {
 153         R_SHADOW_RENDERMODE_NONE,
 154         R_SHADOW_RENDERMODE_ZPASS_STENCIL,
 155         R_SHADOW_RENDERMODE_ZPASS_SEPARATESTENCIL,
 156         R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE,
 157         R_SHADOW_RENDERMODE_ZFAIL_STENCIL,
 158         R_SHADOW_RENDERMODE_ZFAIL_SEPARATESTENCIL,
 159         R_SHADOW_RENDERMODE_ZFAIL_STENCILTWOSIDE,
 160         R_SHADOW_RENDERMODE_LIGHT_VERTEX,
 161         R_SHADOW_RENDERMODE_LIGHT_VERTEX2DATTEN,
 162         R_SHADOW_RENDERMODE_LIGHT_VERTEX2D1DATTEN,
 163         R_SHADOW_RENDERMODE_LIGHT_VERTEX3DATTEN,
 164         R_SHADOW_RENDERMODE_LIGHT_GLSL,
 165         R_SHADOW_RENDERMODE_VISIBLEVOLUMES,
 166         R_SHADOW_RENDERMODE_VISIBLELIGHTING,
 167         R_SHADOW_RENDERMODE_SHADOWMAP2D
 168 }
 169 r_shadow_rendermode_t;
 170
 171 typedef enum r_shadow_shadowmode_e
 172 {
 173         R_SHADOW_SHADOWMODE_STENCIL,
 174         R_SHADOW_SHADOWMODE_SHADOWMAP2D
 175 }
 176 r_shadow_shadowmode_t;
 177
 178 r_shadow_rendermode_t r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
 179 r_shadow_rendermode_t r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_NONE;
 180 r_shadow_rendermode_t r_shadow_shadowingrendermode_zpass = R_SHADOW_RENDERMODE_NONE;
 181 r_shadow_rendermode_t r_shadow_shadowingrendermode_zfail = R_SHADOW_RENDERMODE_NONE;
 182 qboolean r_shadow_usingshadowmap2d;
 183 qboolean r_shadow_usingshadowmaportho;
 184 int r_shadow_shadowmapside;
 185 float r_shadow_shadowmap_texturescale[2];
 186 float r_shadow_shadowmap_parameters[4];
 187 #if 0
 188 int r_shadow_drawbuffer;
 189 int r_shadow_readbuffer;
 190 #endif
 191 int r_shadow_cullface_front, r_shadow_cullface_back;
 192 GLuint r_shadow_fbo2d;
 193 r_shadow_shadowmode_t r_shadow_shadowmode;
 194 int r_shadow_shadowmapfilterquality;
 195 int r_shadow_shadowmapdepthbits;
 196 int r_shadow_shadowmapmaxsize;
 197 qboolean r_shadow_shadowmapvsdct;
 198 qboolean r_shadow_shadowmapsampler;
 199 qboolean r_shadow_shadowmapshadowsampler;
 200 int r_shadow_shadowmappcf;
 201 int r_shadow_shadowmapborder;
 202 matrix4x4_t r_shadow_shadowmapmatrix;
 203 int r_shadow_lightscissor[4];
 204 qboolean r_shadow_usingdeferredprepass;
 205 qboolean r_shadow_shadowmapdepthtexture;
 206 int maxshadowtriangles;
 207 int *shadowelements;
 208
 209 int maxshadowvertices;
 210 float *shadowvertex3f;
 211
 212 int maxshadowmark;
 213 int numshadowmark;
 214 int *shadowmark;
 215 int *shadowmarklist;
 216 int shadowmarkcount;
 217
 218 int maxshadowsides;
 219 int numshadowsides;
 220 unsigned char *shadowsides;
 221 int *shadowsideslist;
 222
 223 int maxvertexupdate;
 224 int *vertexupdate;
 225 int *vertexremap;
 226 int vertexupdatenum;
 227
 228 int r_shadow_buffer_numleafpvsbytes;
 229 unsigned char *r_shadow_buffer_visitingleafpvs;
 230 unsigned char *r_shadow_buffer_leafpvs;
 231 int *r_shadow_buffer_leaflist;
 232
 233 int r_shadow_buffer_numsurfacepvsbytes;
 234 unsigned char *r_shadow_buffer_surfacepvs;
 235 int *r_shadow_buffer_surfacelist;
 236 unsigned char *r_shadow_buffer_surfacesides;
 237
 238 int r_shadow_buffer_numshadowtrispvsbytes;
 239 unsigned char *r_shadow_buffer_shadowtrispvs;
 240 int r_shadow_buffer_numlighttrispvsbytes;
 241 unsigned char *r_shadow_buffer_lighttrispvs;
 242
 243 rtexturepool_t *r_shadow_texturepool;
 244 rtexture_t *r_shadow_attenuationgradienttexture;
 245 rtexture_t *r_shadow_attenuation2dtexture;
 246 rtexture_t *r_shadow_attenuation3dtexture;
 247 skinframe_t *r_shadow_lightcorona;
 248 rtexture_t *r_shadow_shadowmap2ddepthbuffer;
 249 rtexture_t *r_shadow_shadowmap2ddepthtexture;
 250 rtexture_t *r_shadow_shadowmapvsdcttexture;
 251 int r_shadow_shadowmapsize; // changes for each light based on distance
 252 int r_shadow_shadowmaplod; // changes for each light based on distance
 253
 254 GLuint r_shadow_prepassgeometryfbo;
 255 GLuint r_shadow_prepasslightingdiffusespecularfbo;
 256 GLuint r_shadow_prepasslightingdiffusefbo;
 257 int r_shadow_prepass_width;
 258 int r_shadow_prepass_height;
 259 rtexture_t *r_shadow_prepassgeometrydepthbuffer;
 260 rtexture_t *r_shadow_prepassgeometrynormalmaptexture;
 261 rtexture_t *r_shadow_prepasslightingdiffusetexture;
 262 rtexture_t *r_shadow_prepasslightingspeculartexture;
 263
 264 // keep track of the provided framebuffer info
 265 static int r_shadow_fb_fbo;
 266 static rtexture_t *r_shadow_fb_depthtexture;
 267 static rtexture_t *r_shadow_fb_colortexture;
 268
 269 // lights are reloaded when this changes
 270 char r_shadow_mapname[MAX_QPATH];
 271
 272 // used only for light filters (cubemaps)
 273 rtexturepool_t *r_shadow_filters_texturepool;
 274
 275 cvar_t r_shadow_bumpscale_basetexture = {0, "r_shadow_bumpscale_basetexture", "0", "generate fake bumpmaps from diffuse textures at this bumpyness, try 4 to match tenebrae, higher values increase depth, requires r_restart to take effect"};
 276 cvar_t r_shadow_bumpscale_bumpmap = {0, "r_shadow_bumpscale_bumpmap", "4", "what magnitude to interpret _bump.tga textures as, higher values increase depth, requires r_restart to take effect"};
 277 cvar_t r_shadow_debuglight = {0, "r_shadow_debuglight", "-1", "renders only one light, for level design purposes or debugging"};
 278 cvar_t r_shadow_deferred = {CVAR_SAVE, "r_shadow_deferred", "0", "uses image-based lighting instead of geometry-based lighting, the method used renders a depth image and a normalmap image, renders lights into separate diffuse and specular images, and then combines this into the normal rendering, requires r_shadow_shadowmapping"};
 279 cvar_t r_shadow_usebihculling = {0, "r_shadow_usebihculling", "1", "use BIH (Bounding Interval Hierarchy) for culling lit surfaces instead of BSP (Binary Space Partitioning)"};
 280 cvar_t r_shadow_usenormalmap = {CVAR_SAVE, "r_shadow_usenormalmap", "1", "enables use of directional shading on lights"};
 281 cvar_t r_shadow_gloss = {CVAR_SAVE, "r_shadow_gloss", "1", "0 disables gloss (specularity) rendering, 1 uses gloss if textures are found, 2 forces a flat metallic specular effect on everything without textures (similar to tenebrae)"};
 282 cvar_t r_shadow_gloss2intensity = {0, "r_shadow_gloss2intensity", "0.125", "how bright the forced flat gloss should look if r_shadow_gloss is 2"};
 283 cvar_t r_shadow_glossintensity = {0, "r_shadow_glossintensity", "1", "how bright textured glossmaps should look if r_shadow_gloss is 1 or 2"};
 284 cvar_t r_shadow_glossexponent = {0, "r_shadow_glossexponent", "32", "how 'sharp' the gloss should appear (specular power)"};
 285 cvar_t r_shadow_gloss2exponent = {0, "r_shadow_gloss2exponent", "32", "same as r_shadow_glossexponent but for forced gloss (gloss 2) surfaces"};
 286 cvar_t r_shadow_glossexact = {0, "r_shadow_glossexact", "0", "use exact reflection math for gloss (slightly slower, but should look a tad better)"};
 287 cvar_t r_shadow_lightattenuationdividebias = {0, "r_shadow_lightattenuationdividebias", "1", "changes attenuation texture generation"};
 288 cvar_t r_shadow_lightattenuationlinearscale = {0, "r_shadow_lightattenuationlinearscale", "2", "changes attenuation texture generation"};
 289 cvar_t r_shadow_lightintensityscale = {0, "r_shadow_lightintensityscale", "1", "renders all world lights brighter or darker"};
 290 cvar_t r_shadow_lightradiusscale = {0, "r_shadow_lightradiusscale", "1", "renders all world lights larger or smaller"};
 291 cvar_t r_shadow_projectdistance = {0, "r_shadow_projectdistance", "0", "how far to cast shadows"};
 292 cvar_t r_shadow_frontsidecasting = {0, "r_shadow_frontsidecasting", "1", "whether to cast shadows from illuminated triangles (front side of model) or unlit triangles (back side of model)"};
 293 cvar_t r_shadow_realtime_dlight = {CVAR_SAVE, "r_shadow_realtime_dlight", "1", "enables rendering of dynamic lights such as explosions and rocket light"};
 294 cvar_t r_shadow_realtime_dlight_shadows = {CVAR_SAVE, "r_shadow_realtime_dlight_shadows", "1", "enables rendering of shadows from dynamic lights"};
 295 cvar_t r_shadow_realtime_dlight_svbspculling = {0, "r_shadow_realtime_dlight_svbspculling", "0", "enables svbsp optimization on dynamic lights (very slow!)"};
 296 cvar_t r_shadow_realtime_dlight_portalculling = {0, "r_shadow_realtime_dlight_portalculling", "0", "enables portal optimization on dynamic lights (slow!)"};
 297 cvar_t r_shadow_realtime_world = {CVAR_SAVE, "r_shadow_realtime_world", "0", "enables rendering of full world lighting (whether loaded from the map, or a .rtlights file, or a .ent file, or a .lights file produced by hlight)"};
 298 cvar_t r_shadow_realtime_world_lightmaps = {CVAR_SAVE, "r_shadow_realtime_world_lightmaps", "0", "brightness to render lightmaps when using full world lighting, try 0.5 for a tenebrae-like appearance"};
 299 cvar_t r_shadow_realtime_world_shadows = {CVAR_SAVE, "r_shadow_realtime_world_shadows", "1", "enables rendering of shadows from world lights"};
 300 cvar_t r_shadow_realtime_world_compile = {0, "r_shadow_realtime_world_compile", "1", "enables compilation of world lights for higher performance rendering"};
 301 cvar_t r_shadow_realtime_world_compileshadow = {0, "r_shadow_realtime_world_compileshadow", "1", "enables compilation of shadows from world lights for higher performance rendering"};
 302 cvar_t r_shadow_realtime_world_compilesvbsp = {0, "r_shadow_realtime_world_compilesvbsp", "1", "enables svbsp optimization during compilation (slower than compileportalculling but more exact)"};
 303 cvar_t r_shadow_realtime_world_compileportalculling = {0, "r_shadow_realtime_world_compileportalculling", "1", "enables portal-based culling optimization during compilation (overrides compilesvbsp)"};
 304 cvar_t r_shadow_scissor = {0, "r_shadow_scissor", "1", "use scissor optimization of light rendering (restricts rendering to the portion of the screen affected by the light)"};
 305 cvar_t r_shadow_shadowmapping = {CVAR_SAVE, "r_shadow_shadowmapping", "1", "enables use of shadowmapping (depth texture sampling) instead of stencil shadow volumes, requires gl_fbo 1"};
 306 cvar_t r_shadow_shadowmapping_filterquality = {CVAR_SAVE, "r_shadow_shadowmapping_filterquality", "-1", "shadowmap filter modes: -1 = auto-select, 0 = no filtering, 1 = bilinear, 2 = bilinear 2x2 blur (fast), 3 = 3x3 blur (moderate), 4 = 4x4 blur (slow)"};
 307 cvar_t r_shadow_shadowmapping_useshadowsampler = {CVAR_SAVE, "r_shadow_shadowmapping_useshadowsampler", "1", "whether to use sampler2DShadow if available"};
 308 cvar_t r_shadow_shadowmapping_depthbits = {CVAR_SAVE, "r_shadow_shadowmapping_depthbits", "24", "requested minimum shadowmap texture depth bits"};
 309 cvar_t r_shadow_shadowmapping_vsdct = {CVAR_SAVE, "r_shadow_shadowmapping_vsdct", "1", "enables use of virtual shadow depth cube texture"};
 310 cvar_t r_shadow_shadowmapping_minsize = {CVAR_SAVE, "r_shadow_shadowmapping_minsize", "32", "shadowmap size limit"};
 311 cvar_t r_shadow_shadowmapping_maxsize = {CVAR_SAVE, "r_shadow_shadowmapping_maxsize", "512", "shadowmap size limit"};
 312 cvar_t r_shadow_shadowmapping_precision = {CVAR_SAVE, "r_shadow_shadowmapping_precision", "1", "makes shadowmaps have a maximum resolution of this number of pixels per light source radius unit such that, for example, at precision 0.5 a light with radius 200 will have a maximum resolution of 100 pixels"};
 313 //cvar_t r_shadow_shadowmapping_lod_bias = {CVAR_SAVE, "r_shadow_shadowmapping_lod_bias", "16", "shadowmap size bias"};
 314 //cvar_t r_shadow_shadowmapping_lod_scale = {CVAR_SAVE, "r_shadow_shadowmapping_lod_scale", "128", "shadowmap size scaling parameter"};
 315 cvar_t r_shadow_shadowmapping_bordersize = {CVAR_SAVE, "r_shadow_shadowmapping_bordersize", "4", "shadowmap size bias for filtering"};
 316 cvar_t r_shadow_shadowmapping_nearclip = {CVAR_SAVE, "r_shadow_shadowmapping_nearclip", "1", "shadowmap nearclip in world units"};
 317 cvar_t r_shadow_shadowmapping_bias = {CVAR_SAVE, "r_shadow_shadowmapping_bias", "0.03", "shadowmap bias parameter (this is multiplied by nearclip * 1024 / lodsize)"};
 318 cvar_t r_shadow_shadowmapping_polygonfactor = {CVAR_SAVE, "r_shadow_shadowmapping_polygonfactor", "2", "slope-dependent shadowmapping bias"};
 319 cvar_t r_shadow_shadowmapping_polygonoffset = {CVAR_SAVE, "r_shadow_shadowmapping_polygonoffset", "0", "constant shadowmapping bias"};
 320 cvar_t r_shadow_sortsurfaces = {0, "r_shadow_sortsurfaces", "1", "improve performance by sorting illuminated surfaces by texture"};
 321 cvar_t r_shadow_polygonfactor = {0, "r_shadow_polygonfactor", "0", "how much to enlarge shadow volume polygons when rendering (should be 0!)"};
 322 cvar_t r_shadow_polygonoffset = {0, "r_shadow_polygonoffset", "1", "how much to push shadow volumes into the distance when rendering, to reduce chances of zfighting artifacts (should not be less than 0)"};
 323 cvar_t r_shadow_texture3d = {0, "r_shadow_texture3d", "1", "use 3D voxel textures for spherical attenuation rather than cylindrical (does not affect OpenGL 2.0 render path)"};
 324 cvar_t r_shadow_bouncegrid = {CVAR_SAVE, "r_shadow_bouncegrid", "0", "perform particle tracing for indirect lighting (Global Illumination / radiosity) using a 3D texture covering the scene, only active on levels with realtime lights active (r_shadow_realtime_world is usually required for these)"};
 325 cvar_t r_shadow_bouncegrid_bounceanglediffuse = {CVAR_SAVE, "r_shadow_bouncegrid_bounceanglediffuse", "0", "use random bounce direction rather than true reflection, makes some corner areas dark"};
 326 cvar_t r_shadow_bouncegrid_directionalshading = {CVAR_SAVE, "r_shadow_bouncegrid_directionalshading", "0", "use diffuse shading rather than ambient, 3D texture becomes 8x as many pixels to hold the additional data"};
 327 cvar_t r_shadow_bouncegrid_dlightparticlemultiplier = {CVAR_SAVE, "r_shadow_bouncegrid_dlightparticlemultiplier", "0", "if set to a high value like 16 this can make dlights look great, but 0 is recommended for performance reasons"};
 328 cvar_t r_shadow_bouncegrid_hitmodels = {CVAR_SAVE, "r_shadow_bouncegrid_hitmodels", "0", "enables hitting character model geometry (SLOW)"};
 329 cvar_t r_shadow_bouncegrid_includedirectlighting = {CVAR_SAVE, "r_shadow_bouncegrid_includedirectlighting", "0", "allows direct lighting to be recorded, not just indirect (gives an effect somewhat like r_shadow_realtime_world_lightmaps)"};
 330 cvar_t r_shadow_bouncegrid_intensity = {CVAR_SAVE, "r_shadow_bouncegrid_intensity", "4", "overall brightness of bouncegrid texture"};
 331 cvar_t r_shadow_bouncegrid_lightradiusscale = {CVAR_SAVE, "r_shadow_bouncegrid_lightradiusscale", "4", "particles stop at this fraction of light radius (can be more than 1)"};
 332 cvar_t r_shadow_bouncegrid_maxbounce = {CVAR_SAVE, "r_shadow_bouncegrid_maxbounce", "2", "maximum number of bounces for a particle (minimum is 0)"};
 333 cvar_t r_shadow_bouncegrid_particlebounceintensity = {CVAR_SAVE, "r_shadow_bouncegrid_particlebounceintensity", "1", "amount of energy carried over after each bounce, this is a multiplier of texture color and the result is clamped to 1 or less, to prevent adding energy on each bounce"};
 334 cvar_t r_shadow_bouncegrid_particleintensity = {CVAR_SAVE, "r_shadow_bouncegrid_particleintensity", "1", "brightness of particles contributing to bouncegrid texture"};
 335 cvar_t r_shadow_bouncegrid_photons = {CVAR_SAVE, "r_shadow_bouncegrid_photons", "2000", "total photons to shoot per update, divided proportionately between lights"};
 336 cvar_t r_shadow_bouncegrid_spacing = {CVAR_SAVE, "r_shadow_bouncegrid_spacing", "64", "unit size of bouncegrid pixel"};
 337 cvar_t r_shadow_bouncegrid_stablerandom = {CVAR_SAVE, "r_shadow_bouncegrid_stablerandom", "1", "make particle distribution consistent from frame to frame"};
 338 cvar_t r_shadow_bouncegrid_static = {CVAR_SAVE, "r_shadow_bouncegrid_static", "1", "use static radiosity solution (high quality) rather than dynamic (splotchy)"};
 339 cvar_t r_shadow_bouncegrid_static_directionalshading = {CVAR_SAVE, "r_shadow_bouncegrid_static_directionalshading", "1", "whether to use directionalshading when in static mode"};
 340 cvar_t r_shadow_bouncegrid_static_lightradiusscale = {CVAR_SAVE, "r_shadow_bouncegrid_static_lightradiusscale", "10", "particles stop at this fraction of light radius (can be more than 1) when in static mode"};
 341 cvar_t r_shadow_bouncegrid_static_maxbounce = {CVAR_SAVE, "r_shadow_bouncegrid_static_maxbounce", "5", "maximum number of bounces for a particle (minimum is 0) in static mode"};
 342 cvar_t r_shadow_bouncegrid_static_photons = {CVAR_SAVE, "r_shadow_bouncegrid_static_photons", "25000", "photons value to use when in static mode"};
 343 cvar_t r_shadow_bouncegrid_updateinterval = {CVAR_SAVE, "r_shadow_bouncegrid_updateinterval", "0", "update bouncegrid texture once per this many seconds, useful values are 0, 0.05, or 1000000"};
 344 cvar_t r_shadow_bouncegrid_x = {CVAR_SAVE, "r_shadow_bouncegrid_x", "64", "maximum texture size of bouncegrid on X axis"};
 345 cvar_t r_shadow_bouncegrid_y = {CVAR_SAVE, "r_shadow_bouncegrid_y", "64", "maximum texture size of bouncegrid on Y axis"};
 346 cvar_t r_shadow_bouncegrid_z = {CVAR_SAVE, "r_shadow_bouncegrid_z", "32", "maximum texture size of bouncegrid on Z axis"};
 347 cvar_t r_coronas = {CVAR_SAVE, "r_coronas", "0", "brightness of corona flare effects around certain lights, 0 disables corona effects"};
 348 cvar_t r_coronas_occlusionsizescale = {CVAR_SAVE, "r_coronas_occlusionsizescale", "0.1", "size of light source for corona occlusion checksum the proportion of hidden pixels controls corona intensity"};
 349 cvar_t r_coronas_occlusionquery = {CVAR_SAVE, "r_coronas_occlusionquery", "0", "use GL_ARB_occlusion_query extension if supported (fades coronas according to visibility) - bad performance (synchronous rendering) - worse on multi-gpu!"};
 350 cvar_t gl_flashblend = {CVAR_SAVE, "gl_flashblend", "0", "render bright coronas for dynamic lights instead of actual lighting, fast but ugly"};
 351 cvar_t gl_ext_separatestencil = {0, "gl_ext_separatestencil", "1", "make use of OpenGL 2.0 glStencilOpSeparate or GL_ATI_separate_stencil extension"};
 352 cvar_t gl_ext_stenciltwoside = {0, "gl_ext_stenciltwoside", "1", "make use of GL_EXT_stenciltwoside extension (NVIDIA only)"};
 353 cvar_t r_editlights = {0, "r_editlights", "0", "enables .rtlights file editing mode"};
 354 cvar_t r_editlights_cursordistance = {0, "r_editlights_cursordistance", "1024", "maximum distance of cursor from eye"};
 355 cvar_t r_editlights_cursorpushback = {0, "r_editlights_cursorpushback", "0", "how far to pull the cursor back toward the eye"};
 356 cvar_t r_editlights_cursorpushoff = {0, "r_editlights_cursorpushoff", "4", "how far to push the cursor off the impacted surface"};
 357 cvar_t r_editlights_cursorgrid = {0, "r_editlights_cursorgrid", "4", "snaps cursor to this grid size"};
 358 cvar_t r_editlights_quakelightsizescale = {CVAR_SAVE, "r_editlights_quakelightsizescale", "1", "changes size of light entities loaded from a map"};
 359 cvar_t r_editlights_drawproperties = {0, "r_editlights_drawproperties", "1", "draw properties of currently selected light"};
 360 cvar_t r_editlights_current_origin = {0, "r_editlights_current_origin", "0 0 0", "origin of selected light"};
 361 cvar_t r_editlights_current_angles = {0, "r_editlights_current_angles", "0 0 0", "angles of selected light"};
 362 cvar_t r_editlights_current_color = {0, "r_editlights_current_color", "1 1 1", "color of selected light"};
 363 cvar_t r_editlights_current_radius = {0, "r_editlights_current_radius", "0", "radius of selected light"};
 364 cvar_t r_editlights_current_corona = {0, "r_editlights_current_corona", "0", "corona intensity of selected light"};
 365 cvar_t r_editlights_current_coronasize = {0, "r_editlights_current_coronasize", "0", "corona size of selected light"};
 366 cvar_t r_editlights_current_style = {0, "r_editlights_current_style", "0", "style of selected light"};
 367 cvar_t r_editlights_current_shadows = {0, "r_editlights_current_shadows", "0", "shadows flag of selected light"};
 368 cvar_t r_editlights_current_cubemap = {0, "r_editlights_current_cubemap", "0", "cubemap of selected light"};
 369 cvar_t r_editlights_current_ambient = {0, "r_editlights_current_ambient", "0", "ambient intensity of selected light"};
 370 cvar_t r_editlights_current_diffuse = {0, "r_editlights_current_diffuse", "1", "diffuse intensity of selected light"};
 371 cvar_t r_editlights_current_specular = {0, "r_editlights_current_specular", "1", "specular intensity of selected light"};
 372 cvar_t r_editlights_current_normalmode = {0, "r_editlights_current_normalmode", "0", "normalmode flag of selected light"};
 373 cvar_t r_editlights_current_realtimemode = {0, "r_editlights_current_realtimemode", "0", "realtimemode flag of selected light"};
 374
 375
 376 typedef struct r_shadow_bouncegrid_settings_s
 377 {
 378         qboolean staticmode;
 379         qboolean bounceanglediffuse;
 380         qboolean directionalshading;
 381         qboolean includedirectlighting;
 382         float dlightparticlemultiplier;
 383         qboolean hitmodels;
 384         float lightradiusscale;
 385         int maxbounce;
 386         float particlebounceintensity;
 387         float particleintensity;
 388         int photons;
 389         float spacing[3];
 390         int stablerandom;
 391 }
 392 r_shadow_bouncegrid_settings_t;
 393
 394 r_shadow_bouncegrid_settings_t r_shadow_bouncegridsettings;
 395 rtexture_t *r_shadow_bouncegridtexture;
 396 matrix4x4_t r_shadow_bouncegridmatrix;
 397 vec_t r_shadow_bouncegridintensity;
 398 qboolean r_shadow_bouncegriddirectional;
 399 static double r_shadow_bouncegridtime;
 400 static int r_shadow_bouncegridresolution[3];
 401 static int r_shadow_bouncegridnumpixels;
 402 static unsigned char *r_shadow_bouncegridpixels;
 403 static float *r_shadow_bouncegridhighpixels;
 404
 405 // note the table actually includes one more value, just to avoid the need to clamp the distance index due to minor math error
 406 #define ATTENTABLESIZE 256
 407 // 1D gradient, 2D circle and 3D sphere attenuation textures
 408 #define ATTEN1DSIZE 32
 409 #define ATTEN2DSIZE 64
 410 #define ATTEN3DSIZE 32
 411
 412 static float r_shadow_attendividebias; // r_shadow_lightattenuationdividebias
 413 static float r_shadow_attenlinearscale; // r_shadow_lightattenuationlinearscale
 414 static float r_shadow_attentable[ATTENTABLESIZE+1];
 415
 416 rtlight_t *r_shadow_compilingrtlight;
 417 static memexpandablearray_t r_shadow_worldlightsarray;
 418 dlight_t *r_shadow_selectedlight;
 419 dlight_t r_shadow_bufferlight;
 420 vec3_t r_editlights_cursorlocation;
 421 qboolean r_editlights_lockcursor;
 422
 423 extern int con_vislines;
 424
 425 void R_Shadow_UncompileWorldLights(void);
 426 void R_Shadow_ClearWorldLights(void);
 427 void R_Shadow_SaveWorldLights(void);
 428 void R_Shadow_LoadWorldLights(void);
 429 void R_Shadow_LoadLightsFile(void);
 430 void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void);
 431 void R_Shadow_EditLights_Reload_f(void);
 432 void R_Shadow_ValidateCvars(void);
 433 static void R_Shadow_MakeTextures(void);
 434
 435 #define EDLIGHTSPRSIZE                  8
 436 skinframe_t *r_editlights_sprcursor;
 437 skinframe_t *r_editlights_sprlight;
 438 skinframe_t *r_editlights_sprnoshadowlight;
 439 skinframe_t *r_editlights_sprcubemaplight;
 440 skinframe_t *r_editlights_sprcubemapnoshadowlight;
 441 skinframe_t *r_editlights_sprselection;
 442
 443 static void R_Shadow_SetShadowMode(void)
 444 {
 445         r_shadow_shadowmapmaxsize = bound(1, r_shadow_shadowmapping_maxsize.integer, (int)vid.maxtexturesize_2d / 4);
 446         r_shadow_shadowmapvsdct = r_shadow_shadowmapping_vsdct.integer != 0 && vid.renderpath == RENDERPATH_GL20;
 447         r_shadow_shadowmapfilterquality = r_shadow_shadowmapping_filterquality.integer;
 448         r_shadow_shadowmapshadowsampler = r_shadow_shadowmapping_useshadowsampler.integer != 0;
 449         r_shadow_shadowmapdepthbits = r_shadow_shadowmapping_depthbits.integer;
 450         r_shadow_shadowmapborder = bound(0, r_shadow_shadowmapping_bordersize.integer, 16);
 451         r_shadow_shadowmaplod = -1;
 452         r_shadow_shadowmapsize = 0;
 453         r_shadow_shadowmapsampler = false;
 454         r_shadow_shadowmappcf = 0;
 455         r_shadow_shadowmapdepthtexture = r_fb.usedepthtextures;
 456         r_shadow_shadowmode = R_SHADOW_SHADOWMODE_STENCIL;
 457         if ((r_shadow_shadowmapping.integer || r_shadow_deferred.integer) && vid.support.ext_framebuffer_object)
 458         {
 459                 switch(vid.renderpath)
 460                 {
 461                 case RENDERPATH_GL20:
 462                         if(r_shadow_shadowmapfilterquality < 0)
 463                         {
 464                                 if (!r_fb.usedepthtextures)
 465                                         r_shadow_shadowmappcf = 1;
 466                                 else if((strstr(gl_vendor, "NVIDIA") || strstr(gl_renderer, "Radeon HD")) && vid.support.arb_shadow && r_shadow_shadowmapshadowsampler)
 467                                 {
 468                                         r_shadow_shadowmapsampler = true;
 469                                         r_shadow_shadowmappcf = 1;
 470                                 }
 471                                 else if(vid.support.amd_texture_texture4 || vid.support.arb_texture_gather)
 472                                         r_shadow_shadowmappcf = 1;
 473                                 else if((strstr(gl_vendor, "ATI") || strstr(gl_vendor, "Advanced Micro Devices")) && !strstr(gl_renderer, "Mesa") && !strstr(gl_version, "Mesa"))
 474                                         r_shadow_shadowmappcf = 1;
 475                                 else
 476                                         r_shadow_shadowmapsampler = vid.support.arb_shadow && r_shadow_shadowmapshadowsampler;
 477                         }
 478                         else
 479                         {
 480                 r_shadow_shadowmapsampler = vid.support.arb_shadow && r_shadow_shadowmapshadowsampler;
 481                                 switch (r_shadow_shadowmapfilterquality)
 482                                 {
 483                                 case 1:
 484                                         break;
 485                                 case 2:
 486                                         r_shadow_shadowmappcf = 1;
 487                                         break;
 488                                 case 3:
 489                                         r_shadow_shadowmappcf = 1;
 490                                         break;
 491                                 case 4:
 492                                         r_shadow_shadowmappcf = 2;
 493                                         break;
 494                                 }
 495                         }
 496                         if (!r_fb.usedepthtextures)
 497                                 r_shadow_shadowmapsampler = false;
 498                         r_shadow_shadowmode = R_SHADOW_SHADOWMODE_SHADOWMAP2D;
 499                         break;
 500                 case RENDERPATH_D3D9:
 501                 case RENDERPATH_D3D10:
 502                 case RENDERPATH_D3D11:
 503                 case RENDERPATH_SOFT:
 504                         r_shadow_shadowmapsampler = false;
 505                         r_shadow_shadowmappcf = 1;
 506                         r_shadow_shadowmode = R_SHADOW_SHADOWMODE_SHADOWMAP2D;
 507                         break;
 508                 case RENDERPATH_GL11:
 509                 case RENDERPATH_GL13:
 510                 case RENDERPATH_GLES1:
 511                 case RENDERPATH_GLES2:
 512                         break;
 513                 }
 514         }
 515
 516         if(R_CompileShader_CheckStaticParms())
 517                 R_GLSL_Restart_f();
 518 }
 519
 520 qboolean R_Shadow_ShadowMappingEnabled(void)
 521 {
 522         switch (r_shadow_shadowmode)
 523         {
 524         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
 525                 return true;
 526         default:
 527                 return false;
 528         }
 529 }
 530
 531 static void R_Shadow_FreeShadowMaps(void)
 532 {
 533         R_Shadow_SetShadowMode();
 534
 535         R_Mesh_DestroyFramebufferObject(r_shadow_fbo2d);
 536
 537         r_shadow_fbo2d = 0;
 538
 539         if (r_shadow_shadowmap2ddepthtexture)
 540                 R_FreeTexture(r_shadow_shadowmap2ddepthtexture);
 541         r_shadow_shadowmap2ddepthtexture = NULL;
 542
 543         if (r_shadow_shadowmap2ddepthbuffer)
 544                 R_FreeTexture(r_shadow_shadowmap2ddepthbuffer);
 545         r_shadow_shadowmap2ddepthbuffer = NULL;
 546
 547         if (r_shadow_shadowmapvsdcttexture)
 548                 R_FreeTexture(r_shadow_shadowmapvsdcttexture);
 549         r_shadow_shadowmapvsdcttexture = NULL;
 550 }
 551
 552 static void r_shadow_start(void)
 553 {
 554         // allocate vertex processing arrays
 555         r_shadow_bouncegridpixels = NULL;
 556         r_shadow_bouncegridhighpixels = NULL;
 557         r_shadow_bouncegridnumpixels = 0;
 558         r_shadow_bouncegridtexture = NULL;
 559         r_shadow_bouncegriddirectional = false;
 560         r_shadow_attenuationgradienttexture = NULL;
 561         r_shadow_attenuation2dtexture = NULL;
 562         r_shadow_attenuation3dtexture = NULL;
 563         r_shadow_shadowmode = R_SHADOW_SHADOWMODE_STENCIL;
 564         r_shadow_shadowmap2ddepthtexture = NULL;
 565         r_shadow_shadowmap2ddepthbuffer = NULL;
 566         r_shadow_shadowmapvsdcttexture = NULL;
 567         r_shadow_shadowmapmaxsize = 0;
 568         r_shadow_shadowmapsize = 0;
 569         r_shadow_shadowmaplod = 0;
 570         r_shadow_shadowmapfilterquality = -1;
 571         r_shadow_shadowmapdepthbits = 0;
 572         r_shadow_shadowmapvsdct = false;
 573         r_shadow_shadowmapsampler = false;
 574         r_shadow_shadowmappcf = 0;
 575         r_shadow_fbo2d = 0;
 576
 577         R_Shadow_FreeShadowMaps();
 578
 579         r_shadow_texturepool = NULL;
 580         r_shadow_filters_texturepool = NULL;
 581         R_Shadow_ValidateCvars();
 582         R_Shadow_MakeTextures();
 583         maxshadowtriangles = 0;
 584         shadowelements = NULL;
 585         maxshadowvertices = 0;
 586         shadowvertex3f = NULL;
 587         maxvertexupdate = 0;
 588         vertexupdate = NULL;
 589         vertexremap = NULL;
 590         vertexupdatenum = 0;
 591         maxshadowmark = 0;
 592         numshadowmark = 0;
 593         shadowmark = NULL;
 594         shadowmarklist = NULL;
 595         shadowmarkcount = 0;
 596         maxshadowsides = 0;
 597         numshadowsides = 0;
 598         shadowsides = NULL;
 599         shadowsideslist = NULL;
 600         r_shadow_buffer_numleafpvsbytes = 0;
 601         r_shadow_buffer_visitingleafpvs = NULL;
 602         r_shadow_buffer_leafpvs = NULL;
 603         r_shadow_buffer_leaflist = NULL;
 604         r_shadow_buffer_numsurfacepvsbytes = 0;
 605         r_shadow_buffer_surfacepvs = NULL;
 606         r_shadow_buffer_surfacelist = NULL;
 607         r_shadow_buffer_surfacesides = NULL;
 608         r_shadow_buffer_numshadowtrispvsbytes = 0;
 609         r_shadow_buffer_shadowtrispvs = NULL;
 610         r_shadow_buffer_numlighttrispvsbytes = 0;
 611         r_shadow_buffer_lighttrispvs = NULL;
 612
 613         r_shadow_usingdeferredprepass = false;
 614         r_shadow_prepass_width = r_shadow_prepass_height = 0;
 615 }
 616
 617 static void R_Shadow_FreeDeferred(void);
 618 static void r_shadow_shutdown(void)
 619 {
 620         CHECKGLERROR
 621         R_Shadow_UncompileWorldLights();
 622
 623         R_Shadow_FreeShadowMaps();
 624
 625         r_shadow_usingdeferredprepass = false;
 626         if (r_shadow_prepass_width)
 627                 R_Shadow_FreeDeferred();
 628         r_shadow_prepass_width = r_shadow_prepass_height = 0;
 629
 630         CHECKGLERROR
 631         r_shadow_bouncegridtexture = NULL;
 632         r_shadow_bouncegridpixels = NULL;
 633         r_shadow_bouncegridhighpixels = NULL;
 634         r_shadow_bouncegridnumpixels = 0;
 635         r_shadow_bouncegriddirectional = false;
 636         r_shadow_attenuationgradienttexture = NULL;
 637         r_shadow_attenuation2dtexture = NULL;
 638         r_shadow_attenuation3dtexture = NULL;
 639         R_FreeTexturePool(&r_shadow_texturepool);
 640         R_FreeTexturePool(&r_shadow_filters_texturepool);
 641         maxshadowtriangles = 0;
 642         if (shadowelements)
 643                 Mem_Free(shadowelements);
 644         shadowelements = NULL;
 645         if (shadowvertex3f)
 646                 Mem_Free(shadowvertex3f);
 647         shadowvertex3f = NULL;
 648         maxvertexupdate = 0;
 649         if (vertexupdate)
 650                 Mem_Free(vertexupdate);
 651         vertexupdate = NULL;
 652         if (vertexremap)
 653                 Mem_Free(vertexremap);
 654         vertexremap = NULL;
 655         vertexupdatenum = 0;
 656         maxshadowmark = 0;
 657         numshadowmark = 0;
 658         if (shadowmark)
 659                 Mem_Free(shadowmark);
 660         shadowmark = NULL;
 661         if (shadowmarklist)
 662                 Mem_Free(shadowmarklist);
 663         shadowmarklist = NULL;
 664         shadowmarkcount = 0;
 665         maxshadowsides = 0;
 666         numshadowsides = 0;
 667         if (shadowsides)
 668                 Mem_Free(shadowsides);
 669         shadowsides = NULL;
 670         if (shadowsideslist)
 671                 Mem_Free(shadowsideslist);
 672         shadowsideslist = NULL;
 673         r_shadow_buffer_numleafpvsbytes = 0;
 674         if (r_shadow_buffer_visitingleafpvs)
 675                 Mem_Free(r_shadow_buffer_visitingleafpvs);
 676         r_shadow_buffer_visitingleafpvs = NULL;
 677         if (r_shadow_buffer_leafpvs)
 678                 Mem_Free(r_shadow_buffer_leafpvs);
 679         r_shadow_buffer_leafpvs = NULL;
 680         if (r_shadow_buffer_leaflist)
 681                 Mem_Free(r_shadow_buffer_leaflist);
 682         r_shadow_buffer_leaflist = NULL;
 683         r_shadow_buffer_numsurfacepvsbytes = 0;
 684         if (r_shadow_buffer_surfacepvs)
 685                 Mem_Free(r_shadow_buffer_surfacepvs);
 686         r_shadow_buffer_surfacepvs = NULL;
 687         if (r_shadow_buffer_surfacelist)
 688                 Mem_Free(r_shadow_buffer_surfacelist);
 689         r_shadow_buffer_surfacelist = NULL;
 690         if (r_shadow_buffer_surfacesides)
 691                 Mem_Free(r_shadow_buffer_surfacesides);
 692         r_shadow_buffer_surfacesides = NULL;
 693         r_shadow_buffer_numshadowtrispvsbytes = 0;
 694         if (r_shadow_buffer_shadowtrispvs)
 695                 Mem_Free(r_shadow_buffer_shadowtrispvs);
 696         r_shadow_buffer_numlighttrispvsbytes = 0;
 697         if (r_shadow_buffer_lighttrispvs)
 698                 Mem_Free(r_shadow_buffer_lighttrispvs);
 699 }
 700
 701 static void r_shadow_newmap(void)
 702 {
 703         if (r_shadow_bouncegridtexture) R_FreeTexture(r_shadow_bouncegridtexture);r_shadow_bouncegridtexture = NULL;
 704         if (r_shadow_lightcorona)                 R_SkinFrame_MarkUsed(r_shadow_lightcorona);
 705         if (r_editlights_sprcursor)               R_SkinFrame_MarkUsed(r_editlights_sprcursor);
 706         if (r_editlights_sprlight)                R_SkinFrame_MarkUsed(r_editlights_sprlight);
 707         if (r_editlights_sprnoshadowlight)        R_SkinFrame_MarkUsed(r_editlights_sprnoshadowlight);
 708         if (r_editlights_sprcubemaplight)         R_SkinFrame_MarkUsed(r_editlights_sprcubemaplight);
 709         if (r_editlights_sprcubemapnoshadowlight) R_SkinFrame_MarkUsed(r_editlights_sprcubemapnoshadowlight);
 710         if (r_editlights_sprselection)            R_SkinFrame_MarkUsed(r_editlights_sprselection);
 711         if (strncmp(cl.worldname, r_shadow_mapname, sizeof(r_shadow_mapname)))
 712                 R_Shadow_EditLights_Reload_f();
 713 }
 714
 715 void R_Shadow_Init(void)
 716 {
 717         Cvar_RegisterVariable(&r_shadow_bumpscale_basetexture);
 718         Cvar_RegisterVariable(&r_shadow_bumpscale_bumpmap);
 719         Cvar_RegisterVariable(&r_shadow_usebihculling);
 720         Cvar_RegisterVariable(&r_shadow_usenormalmap);
 721         Cvar_RegisterVariable(&r_shadow_debuglight);
 722         Cvar_RegisterVariable(&r_shadow_deferred);
 723         Cvar_RegisterVariable(&r_shadow_gloss);
 724         Cvar_RegisterVariable(&r_shadow_gloss2intensity);
 725         Cvar_RegisterVariable(&r_shadow_glossintensity);
 726         Cvar_RegisterVariable(&r_shadow_glossexponent);
 727         Cvar_RegisterVariable(&r_shadow_gloss2exponent);
 728         Cvar_RegisterVariable(&r_shadow_glossexact);
 729         Cvar_RegisterVariable(&r_shadow_lightattenuationdividebias);
 730         Cvar_RegisterVariable(&r_shadow_lightattenuationlinearscale);
 731         Cvar_RegisterVariable(&r_shadow_lightintensityscale);
 732         Cvar_RegisterVariable(&r_shadow_lightradiusscale);
 733         Cvar_RegisterVariable(&r_shadow_projectdistance);
 734         Cvar_RegisterVariable(&r_shadow_frontsidecasting);
 735         Cvar_RegisterVariable(&r_shadow_realtime_dlight);
 736         Cvar_RegisterVariable(&r_shadow_realtime_dlight_shadows);
 737         Cvar_RegisterVariable(&r_shadow_realtime_dlight_svbspculling);
 738         Cvar_RegisterVariable(&r_shadow_realtime_dlight_portalculling);
 739         Cvar_RegisterVariable(&r_shadow_realtime_world);
 740         Cvar_RegisterVariable(&r_shadow_realtime_world_lightmaps);
 741         Cvar_RegisterVariable(&r_shadow_realtime_world_shadows);
 742         Cvar_RegisterVariable(&r_shadow_realtime_world_compile);
 743         Cvar_RegisterVariable(&r_shadow_realtime_world_compileshadow);
 744         Cvar_RegisterVariable(&r_shadow_realtime_world_compilesvbsp);
 745         Cvar_RegisterVariable(&r_shadow_realtime_world_compileportalculling);
 746         Cvar_RegisterVariable(&r_shadow_scissor);
 747         Cvar_RegisterVariable(&r_shadow_shadowmapping);
 748         Cvar_RegisterVariable(&r_shadow_shadowmapping_vsdct);
 749         Cvar_RegisterVariable(&r_shadow_shadowmapping_filterquality);
 750         Cvar_RegisterVariable(&r_shadow_shadowmapping_useshadowsampler);
 751         Cvar_RegisterVariable(&r_shadow_shadowmapping_depthbits);
 752         Cvar_RegisterVariable(&r_shadow_shadowmapping_precision);
 753         Cvar_RegisterVariable(&r_shadow_shadowmapping_maxsize);
 754         Cvar_RegisterVariable(&r_shadow_shadowmapping_minsize);
 755 //      Cvar_RegisterVariable(&r_shadow_shadowmapping_lod_bias);
 756 //      Cvar_RegisterVariable(&r_shadow_shadowmapping_lod_scale);
 757         Cvar_RegisterVariable(&r_shadow_shadowmapping_bordersize);
 758         Cvar_RegisterVariable(&r_shadow_shadowmapping_nearclip);
 759         Cvar_RegisterVariable(&r_shadow_shadowmapping_bias);
 760         Cvar_RegisterVariable(&r_shadow_shadowmapping_polygonfactor);
 761         Cvar_RegisterVariable(&r_shadow_shadowmapping_polygonoffset);
 762         Cvar_RegisterVariable(&r_shadow_sortsurfaces);
 763         Cvar_RegisterVariable(&r_shadow_polygonfactor);
 764         Cvar_RegisterVariable(&r_shadow_polygonoffset);
 765         Cvar_RegisterVariable(&r_shadow_texture3d);
 766         Cvar_RegisterVariable(&r_shadow_bouncegrid);
 767         Cvar_RegisterVariable(&r_shadow_bouncegrid_bounceanglediffuse);
 768         Cvar_RegisterVariable(&r_shadow_bouncegrid_directionalshading);
 769         Cvar_RegisterVariable(&r_shadow_bouncegrid_dlightparticlemultiplier);
 770         Cvar_RegisterVariable(&r_shadow_bouncegrid_hitmodels);
 771         Cvar_RegisterVariable(&r_shadow_bouncegrid_includedirectlighting);
 772         Cvar_RegisterVariable(&r_shadow_bouncegrid_intensity);
 773         Cvar_RegisterVariable(&r_shadow_bouncegrid_lightradiusscale);
 774         Cvar_RegisterVariable(&r_shadow_bouncegrid_maxbounce);
 775         Cvar_RegisterVariable(&r_shadow_bouncegrid_particlebounceintensity);
 776         Cvar_RegisterVariable(&r_shadow_bouncegrid_particleintensity);
 777         Cvar_RegisterVariable(&r_shadow_bouncegrid_photons);
 778         Cvar_RegisterVariable(&r_shadow_bouncegrid_spacing);
 779         Cvar_RegisterVariable(&r_shadow_bouncegrid_stablerandom);
 780         Cvar_RegisterVariable(&r_shadow_bouncegrid_static);
 781         Cvar_RegisterVariable(&r_shadow_bouncegrid_static_directionalshading);
 782         Cvar_RegisterVariable(&r_shadow_bouncegrid_static_lightradiusscale);
 783         Cvar_RegisterVariable(&r_shadow_bouncegrid_static_maxbounce);
 784         Cvar_RegisterVariable(&r_shadow_bouncegrid_static_photons);
 785         Cvar_RegisterVariable(&r_shadow_bouncegrid_updateinterval);
 786         Cvar_RegisterVariable(&r_shadow_bouncegrid_x);
 787         Cvar_RegisterVariable(&r_shadow_bouncegrid_y);
 788         Cvar_RegisterVariable(&r_shadow_bouncegrid_z);
 789         Cvar_RegisterVariable(&r_coronas);
 790         Cvar_RegisterVariable(&r_coronas_occlusionsizescale);
 791         Cvar_RegisterVariable(&r_coronas_occlusionquery);
 792         Cvar_RegisterVariable(&gl_flashblend);
 793         Cvar_RegisterVariable(&gl_ext_separatestencil);
 794         Cvar_RegisterVariable(&gl_ext_stenciltwoside);
 795         R_Shadow_EditLights_Init();
 796         Mem_ExpandableArray_NewArray(&r_shadow_worldlightsarray, r_main_mempool, sizeof(dlight_t), 128);
 797         maxshadowtriangles = 0;
 798         shadowelements = NULL;
 799         maxshadowvertices = 0;
 800         shadowvertex3f = NULL;
 801         maxvertexupdate = 0;
 802         vertexupdate = NULL;
 803         vertexremap = NULL;
 804         vertexupdatenum = 0;
 805         maxshadowmark = 0;
 806         numshadowmark = 0;
 807         shadowmark = NULL;
 808         shadowmarklist = NULL;
 809         shadowmarkcount = 0;
 810         maxshadowsides = 0;
 811         numshadowsides = 0;
 812         shadowsides = NULL;
 813         shadowsideslist = NULL;
 814         r_shadow_buffer_numleafpvsbytes = 0;
 815         r_shadow_buffer_visitingleafpvs = NULL;
 816         r_shadow_buffer_leafpvs = NULL;
 817         r_shadow_buffer_leaflist = NULL;
 818         r_shadow_buffer_numsurfacepvsbytes = 0;
 819         r_shadow_buffer_surfacepvs = NULL;
 820         r_shadow_buffer_surfacelist = NULL;
 821         r_shadow_buffer_surfacesides = NULL;
 822         r_shadow_buffer_shadowtrispvs = NULL;
 823         r_shadow_buffer_lighttrispvs = NULL;
 824         R_RegisterModule("R_Shadow", r_shadow_start, r_shadow_shutdown, r_shadow_newmap, NULL, NULL);
 825 }
 826
 827 matrix4x4_t matrix_attenuationxyz =
 828 {
 829         {
 830                 {0.5, 0.0, 0.0, 0.5},
 831                 {0.0, 0.5, 0.0, 0.5},
 832                 {0.0, 0.0, 0.5, 0.5},
 833                 {0.0, 0.0, 0.0, 1.0}
 834         }
 835 };
 836
 837 matrix4x4_t matrix_attenuationz =
 838 {
 839         {
 840                 {0.0, 0.0, 0.5, 0.5},
 841                 {0.0, 0.0, 0.0, 0.5},
 842                 {0.0, 0.0, 0.0, 0.5},
 843                 {0.0, 0.0, 0.0, 1.0}
 844         }
 845 };
 846
 847 static void R_Shadow_ResizeShadowArrays(int numvertices, int numtriangles, int vertscale, int triscale)
 848 {
 849         numvertices = ((numvertices + 255) & ~255) * vertscale;
 850         numtriangles = ((numtriangles + 255) & ~255) * triscale;
 851         // make sure shadowelements is big enough for this volume
 852         if (maxshadowtriangles < numtriangles)
 853         {
 854                 maxshadowtriangles = numtriangles;
 855                 if (shadowelements)
 856                         Mem_Free(shadowelements);
 857                 shadowelements = (int *)Mem_Alloc(r_main_mempool, maxshadowtriangles * sizeof(int[3]));
 858         }
 859         // make sure shadowvertex3f is big enough for this volume
 860         if (maxshadowvertices < numvertices)
 861         {
 862                 maxshadowvertices = numvertices;
 863                 if (shadowvertex3f)
 864                         Mem_Free(shadowvertex3f);
 865                 shadowvertex3f = (float *)Mem_Alloc(r_main_mempool, maxshadowvertices * sizeof(float[3]));
 866         }
 867 }
 868
 869 static void R_Shadow_EnlargeLeafSurfaceTrisBuffer(int numleafs, int numsurfaces, int numshadowtriangles, int numlighttriangles)
 870 {
 871         int numleafpvsbytes = (((numleafs + 7) >> 3) + 255) & ~255;
 872         int numsurfacepvsbytes = (((numsurfaces + 7) >> 3) + 255) & ~255;
 873         int numshadowtrispvsbytes = (((numshadowtriangles + 7) >> 3) + 255) & ~255;
 874         int numlighttrispvsbytes = (((numlighttriangles + 7) >> 3) + 255) & ~255;
 875         if (r_shadow_buffer_numleafpvsbytes < numleafpvsbytes)
 876         {
 877                 if (r_shadow_buffer_visitingleafpvs)
 878                         Mem_Free(r_shadow_buffer_visitingleafpvs);
 879                 if (r_shadow_buffer_leafpvs)
 880                         Mem_Free(r_shadow_buffer_leafpvs);
 881                 if (r_shadow_buffer_leaflist)
 882                         Mem_Free(r_shadow_buffer_leaflist);
 883                 r_shadow_buffer_numleafpvsbytes = numleafpvsbytes;
 884                 r_shadow_buffer_visitingleafpvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numleafpvsbytes);
 885                 r_shadow_buffer_leafpvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numleafpvsbytes);
 886                 r_shadow_buffer_leaflist = (int *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numleafpvsbytes * 8 * sizeof(*r_shadow_buffer_leaflist));
 887         }
 888         if (r_shadow_buffer_numsurfacepvsbytes < numsurfacepvsbytes)
 889         {
 890                 if (r_shadow_buffer_surfacepvs)
 891                         Mem_Free(r_shadow_buffer_surfacepvs);
 892                 if (r_shadow_buffer_surfacelist)
 893                         Mem_Free(r_shadow_buffer_surfacelist);
 894                 if (r_shadow_buffer_surfacesides)
 895                         Mem_Free(r_shadow_buffer_surfacesides);
 896                 r_shadow_buffer_numsurfacepvsbytes = numsurfacepvsbytes;
 897                 r_shadow_buffer_surfacepvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numsurfacepvsbytes);
 898                 r_shadow_buffer_surfacelist = (int *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numsurfacepvsbytes * 8 * sizeof(*r_shadow_buffer_surfacelist));
 899                 r_shadow_buffer_surfacesides = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numsurfacepvsbytes * 8 * sizeof(*r_shadow_buffer_surfacelist));
 900         }
 901         if (r_shadow_buffer_numshadowtrispvsbytes < numshadowtrispvsbytes)
 902         {
 903                 if (r_shadow_buffer_shadowtrispvs)
 904                         Mem_Free(r_shadow_buffer_shadowtrispvs);
 905                 r_shadow_buffer_numshadowtrispvsbytes = numshadowtrispvsbytes;
 906                 r_shadow_buffer_shadowtrispvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numshadowtrispvsbytes);
 907         }
 908         if (r_shadow_buffer_numlighttrispvsbytes < numlighttrispvsbytes)
 909         {
 910                 if (r_shadow_buffer_lighttrispvs)
 911                         Mem_Free(r_shadow_buffer_lighttrispvs);
 912                 r_shadow_buffer_numlighttrispvsbytes = numlighttrispvsbytes;
 913                 r_shadow_buffer_lighttrispvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numlighttrispvsbytes);
 914         }
 915 }
 916
 917 void R_Shadow_PrepareShadowMark(int numtris)
 918 {
 919         // make sure shadowmark is big enough for this volume
 920         if (maxshadowmark < numtris)
 921         {
 922                 maxshadowmark = numtris;
 923                 if (shadowmark)
 924                         Mem_Free(shadowmark);
 925                 if (shadowmarklist)
 926                         Mem_Free(shadowmarklist);
 927                 shadowmark = (int *)Mem_Alloc(r_main_mempool, maxshadowmark * sizeof(*shadowmark));
 928                 shadowmarklist = (int *)Mem_Alloc(r_main_mempool, maxshadowmark * sizeof(*shadowmarklist));
 929                 shadowmarkcount = 0;
 930         }
 931         shadowmarkcount++;
 932         // if shadowmarkcount wrapped we clear the array and adjust accordingly
 933         if (shadowmarkcount == 0)
 934         {
 935                 shadowmarkcount = 1;
 936                 memset(shadowmark, 0, maxshadowmark * sizeof(*shadowmark));
 937         }
 938         numshadowmark = 0;
 939 }
 940
 941 void R_Shadow_PrepareShadowSides(int numtris)
 942 {
 943         if (maxshadowsides < numtris)
 944         {
 945                 maxshadowsides = numtris;
 946                 if (shadowsides)
 947                         Mem_Free(shadowsides);
 948                 if (shadowsideslist)
 949                         Mem_Free(shadowsideslist);
 950                 shadowsides = (unsigned char *)Mem_Alloc(r_main_mempool, maxshadowsides * sizeof(*shadowsides));
 951                 shadowsideslist = (int *)Mem_Alloc(r_main_mempool, maxshadowsides * sizeof(*shadowsideslist));
 952         }
 953         numshadowsides = 0;
 954 }
 955
 956 static int R_Shadow_ConstructShadowVolume_ZFail(int innumvertices, int innumtris, const int *inelement3i, const int *inneighbor3i, const float *invertex3f, int *outnumvertices, int *outelement3i, float *outvertex3f, const float *projectorigin, const float *projectdirection, float projectdistance, int numshadowmarktris, const int *shadowmarktris)
 957 {
 958         int i, j;
 959         int outtriangles = 0, outvertices = 0;
 960         const int *element;
 961         const float *vertex;
 962         float ratio, direction[3], projectvector[3];
 963
 964         if (projectdirection)
 965                 VectorScale(projectdirection, projectdistance, projectvector);
 966         else
 967                 VectorClear(projectvector);
 968
 969         // create the vertices
 970         if (projectdirection)
 971         {
 972                 for (i = 0;i < numshadowmarktris;i++)
 973                 {
 974                         element = inelement3i + shadowmarktris[i] * 3;
 975                         for (j = 0;j < 3;j++)
 976                         {
 977                                 if (vertexupdate[element[j]] != vertexupdatenum)
 978                                 {
 979                                         vertexupdate[element[j]] = vertexupdatenum;
 980                                         vertexremap[element[j]] = outvertices;
 981                                         vertex = invertex3f + element[j] * 3;
 982                                         // project one copy of the vertex according to projectvector
 983                                         VectorCopy(vertex, outvertex3f);
 984                                         VectorAdd(vertex, projectvector, (outvertex3f + 3));
 985                                         outvertex3f += 6;
 986                                         outvertices += 2;
 987                                 }
 988                         }
 989                 }
 990         }
 991         else
 992         {
 993                 for (i = 0;i < numshadowmarktris;i++)
 994                 {
 995                         element = inelement3i + shadowmarktris[i] * 3;
 996                         for (j = 0;j < 3;j++)
 997                         {
 998                                 if (vertexupdate[element[j]] != vertexupdatenum)
 999                                 {
1000                                         vertexupdate[element[j]] = vertexupdatenum;
1001                                         vertexremap[element[j]] = outvertices;
1002                                         vertex = invertex3f + element[j] * 3;
1003                                         // project one copy of the vertex to the sphere radius of the light
1004                                         // (FIXME: would projecting it to the light box be better?)
1005                                         VectorSubtract(vertex, projectorigin, direction);
1006                                         ratio = projectdistance / VectorLength(direction);
1007                                         VectorCopy(vertex, outvertex3f);
1008                                         VectorMA(projectorigin, ratio, direction, (outvertex3f + 3));
1009                                         outvertex3f += 6;
1010                                         outvertices += 2;
1011                                 }
1012                         }
1013                 }
1014         }
1015
1016         if (r_shadow_frontsidecasting.integer)
1017         {
1018                 for (i = 0;i < numshadowmarktris;i++)
1019                 {
1020                         int remappedelement[3];
1021                         int markindex;
1022                         const int *neighbortriangle;
1023
1024                         markindex = shadowmarktris[i] * 3;
1025                         element = inelement3i + markindex;
1026                         neighbortriangle = inneighbor3i + markindex;
1027                         // output the front and back triangles
1028                         outelement3i[0] = vertexremap[element[0]];
1029                         outelement3i[1] = vertexremap[element[1]];
1030                         outelement3i[2] = vertexremap[element[2]];
1031                         outelement3i[3] = vertexremap[element[2]] + 1;
1032                         outelement3i[4] = vertexremap[element[1]] + 1;
1033                         outelement3i[5] = vertexremap[element[0]] + 1;
1034
1035                         outelement3i += 6;
1036                         outtriangles += 2;
1037                         // output the sides (facing outward from this triangle)
1038                         if (shadowmark[neighbortriangle[0]] != shadowmarkcount)
1039                         {
1040                                 remappedelement[0] = vertexremap[element[0]];
1041                                 remappedelement[1] = vertexremap[element[1]];
1042                                 outelement3i[0] = remappedelement[1];
1043                                 outelement3i[1] = remappedelement[0];
1044                                 outelement3i[2] = remappedelement[0] + 1;
1045                                 outelement3i[3] = remappedelement[1];
1046                                 outelement3i[4] = remappedelement[0] + 1;
1047                                 outelement3i[5] = remappedelement[1] + 1;
1048
1049                                 outelement3i += 6;
1050                                 outtriangles += 2;
1051                         }
1052                         if (shadowmark[neighbortriangle[1]] != shadowmarkcount)
1053                         {
1054                                 remappedelement[1] = vertexremap[element[1]];
1055                                 remappedelement[2] = vertexremap[element[2]];
1056                                 outelement3i[0] = remappedelement[2];
1057                                 outelement3i[1] = remappedelement[1];
1058                                 outelement3i[2] = remappedelement[1] + 1;
1059                                 outelement3i[3] = remappedelement[2];
1060                                 outelement3i[4] = remappedelement[1] + 1;
1061                                 outelement3i[5] = remappedelement[2] + 1;
1062
1063                                 outelement3i += 6;
1064                                 outtriangles += 2;
1065                         }
1066                         if (shadowmark[neighbortriangle[2]] != shadowmarkcount)
1067                         {
1068                                 remappedelement[0] = vertexremap[element[0]];
1069                                 remappedelement[2] = vertexremap[element[2]];
1070                                 outelement3i[0] = remappedelement[0];
1071                                 outelement3i[1] = remappedelement[2];
1072                                 outelement3i[2] = remappedelement[2] + 1;
1073                                 outelement3i[3] = remappedelement[0];
1074                                 outelement3i[4] = remappedelement[2] + 1;
1075                                 outelement3i[5] = remappedelement[0] + 1;
1076
1077                                 outelement3i += 6;
1078                                 outtriangles += 2;
1079                         }
1080                 }
1081         }
1082         else
1083         {
1084                 for (i = 0;i < numshadowmarktris;i++)
1085                 {
1086                         int remappedelement[3];
1087                         int markindex;
1088                         const int *neighbortriangle;
1089
1090                         markindex = shadowmarktris[i] * 3;
1091                         element = inelement3i + markindex;
1092                         neighbortriangle = inneighbor3i + markindex;
1093                         // output the front and back triangles
1094                         outelement3i[0] = vertexremap[element[2]];
1095                         outelement3i[1] = vertexremap[element[1]];
1096                         outelement3i[2] = vertexremap[element[0]];
1097                         outelement3i[3] = vertexremap[element[0]] + 1;
1098                         outelement3i[4] = vertexremap[element[1]] + 1;
1099                         outelement3i[5] = vertexremap[element[2]] + 1;
1100
1101                         outelement3i += 6;
1102                         outtriangles += 2;
1103                         // output the sides (facing outward from this triangle)
1104                         if (shadowmark[neighbortriangle[0]] != shadowmarkcount)
1105                         {
1106                                 remappedelement[0] = vertexremap[element[0]];
1107                                 remappedelement[1] = vertexremap[element[1]];
1108                                 outelement3i[0] = remappedelement[0];
1109                                 outelement3i[1] = remappedelement[1];
1110                                 outelement3i[2] = remappedelement[1] + 1;
1111                                 outelement3i[3] = remappedelement[0];
1112                                 outelement3i[4] = remappedelement[1] + 1;
1113                                 outelement3i[5] = remappedelement[0] + 1;
1114
1115                                 outelement3i += 6;
1116                                 outtriangles += 2;
1117                         }
1118                         if (shadowmark[neighbortriangle[1]] != shadowmarkcount)
1119                         {
1120                                 remappedelement[1] = vertexremap[element[1]];
1121                                 remappedelement[2] = vertexremap[element[2]];
1122                                 outelement3i[0] = remappedelement[1];
1123                                 outelement3i[1] = remappedelement[2];
1124                                 outelement3i[2] = remappedelement[2] + 1;
1125                                 outelement3i[3] = remappedelement[1];
1126                                 outelement3i[4] = remappedelement[2] + 1;
1127                                 outelement3i[5] = remappedelement[1] + 1;
1128
1129                                 outelement3i += 6;
1130                                 outtriangles += 2;
1131                         }
1132                         if (shadowmark[neighbortriangle[2]] != shadowmarkcount)
1133                         {
1134                                 remappedelement[0] = vertexremap[element[0]];
1135                                 remappedelement[2] = vertexremap[element[2]];
1136                                 outelement3i[0] = remappedelement[2];
1137                                 outelement3i[1] = remappedelement[0];
1138                                 outelement3i[2] = remappedelement[0] + 1;
1139                                 outelement3i[3] = remappedelement[2];
1140                                 outelement3i[4] = remappedelement[0] + 1;
1141                                 outelement3i[5] = remappedelement[2] + 1;
1142
1143                                 outelement3i += 6;
1144                                 outtriangles += 2;
1145                         }
1146                 }
1147         }
1148         if (outnumvertices)
1149                 *outnumvertices = outvertices;
1150         return outtriangles;
1151 }
1152
1153 static int R_Shadow_ConstructShadowVolume_ZPass(int innumvertices, int innumtris, const int *inelement3i, const int *inneighbor3i, const float *invertex3f, int *outnumvertices, int *outelement3i, float *outvertex3f, const float *projectorigin, const float *projectdirection, float projectdistance, int numshadowmarktris, const int *shadowmarktris)
1154 {
1155         int i, j, k;
1156         int outtriangles = 0, outvertices = 0;
1157         const int *element;
1158         const float *vertex;
1159         float ratio, direction[3], projectvector[3];
1160         qboolean side[4];
1161
1162         if (projectdirection)
1163                 VectorScale(projectdirection, projectdistance, projectvector);
1164         else
1165                 VectorClear(projectvector);
1166
1167         for (i = 0;i < numshadowmarktris;i++)
1168         {
1169                 int remappedelement[3];
1170                 int markindex;
1171                 const int *neighbortriangle;
1172
1173                 markindex = shadowmarktris[i] * 3;
1174                 neighbortriangle = inneighbor3i + markindex;
1175                 side[0] = shadowmark[neighbortriangle[0]] == shadowmarkcount;
1176                 side[1] = shadowmark[neighbortriangle[1]] == shadowmarkcount;
1177                 side[2] = shadowmark[neighbortriangle[2]] == shadowmarkcount;
1178                 if (side[0] + side[1] + side[2] == 0)
1179                         continue;
1180
1181                 side[3] = side[0];
1182                 element = inelement3i + markindex;
1183
1184                 // create the vertices
1185                 for (j = 0;j < 3;j++)
1186                 {
1187                         if (side[j] + side[j+1] == 0)
1188                                 continue;
1189                         k = element[j];
1190                         if (vertexupdate[k] != vertexupdatenum)
1191                         {
1192                                 vertexupdate[k] = vertexupdatenum;
1193                                 vertexremap[k] = outvertices;
1194                                 vertex = invertex3f + k * 3;
1195                                 VectorCopy(vertex, outvertex3f);
1196                                 if (projectdirection)
1197                                 {
1198                                         // project one copy of the vertex according to projectvector
1199                                         VectorAdd(vertex, projectvector, (outvertex3f + 3));
1200                                 }
1201                                 else
1202                                 {
1203                                         // project one copy of the vertex to the sphere radius of the light
1204                                         // (FIXME: would projecting it to the light box be better?)
1205                                         VectorSubtract(vertex, projectorigin, direction);
1206                                         ratio = projectdistance / VectorLength(direction);
1207                                         VectorMA(projectorigin, ratio, direction, (outvertex3f + 3));
1208                                 }
1209                                 outvertex3f += 6;
1210                                 outvertices += 2;
1211                         }
1212                 }
1213
1214                 // output the sides (facing outward from this triangle)
1215                 if (!side[0])
1216                 {
1217                         remappedelement[0] = vertexremap[element[0]];
1218                         remappedelement[1] = vertexremap[element[1]];
1219                         outelement3i[0] = remappedelement[1];
1220                         outelement3i[1] = remappedelement[0];
1221                         outelement3i[2] = remappedelement[0] + 1;
1222                         outelement3i[3] = remappedelement[1];
1223                         outelement3i[4] = remappedelement[0] + 1;
1224                         outelement3i[5] = remappedelement[1] + 1;
1225
1226                         outelement3i += 6;
1227                         outtriangles += 2;
1228                 }
1229                 if (!side[1])
1230                 {
1231                         remappedelement[1] = vertexremap[element[1]];
1232                         remappedelement[2] = vertexremap[element[2]];
1233                         outelement3i[0] = remappedelement[2];
1234                         outelement3i[1] = remappedelement[1];
1235                         outelement3i[2] = remappedelement[1] + 1;
1236                         outelement3i[3] = remappedelement[2];
1237                         outelement3i[4] = remappedelement[1] + 1;
1238                         outelement3i[5] = remappedelement[2] + 1;
1239
1240                         outelement3i += 6;
1241                         outtriangles += 2;
1242                 }
1243                 if (!side[2])
1244                 {
1245                         remappedelement[0] = vertexremap[element[0]];
1246                         remappedelement[2] = vertexremap[element[2]];
1247                         outelement3i[0] = remappedelement[0];
1248                         outelement3i[1] = remappedelement[2];
1249                         outelement3i[2] = remappedelement[2] + 1;
1250                         outelement3i[3] = remappedelement[0];
1251                         outelement3i[4] = remappedelement[2] + 1;
1252                         outelement3i[5] = remappedelement[0] + 1;
1253
1254                         outelement3i += 6;
1255                         outtriangles += 2;
1256                 }
1257         }
1258         if (outnumvertices)
1259                 *outnumvertices = outvertices;
1260         return outtriangles;
1261 }
1262
1263 void R_Shadow_MarkVolumeFromBox(int firsttriangle, int numtris, const float *invertex3f, const int *elements, const vec3_t projectorigin, const vec3_t projectdirection, const vec3_t lightmins, const vec3_t lightmaxs, const vec3_t surfacemins, const vec3_t surfacemaxs)
1264 {
1265         int t, tend;
1266         const int *e;
1267         const float *v[3];
1268         float normal[3];
1269         if (!BoxesOverlap(lightmins, lightmaxs, surfacemins, surfacemaxs))
1270                 return;
1271         tend = firsttriangle + numtris;
1272         if (BoxInsideBox(surfacemins, surfacemaxs, lightmins, lightmaxs))
1273         {
1274                 // surface box entirely inside light box, no box cull
1275                 if (projectdirection)
1276                 {
1277                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1278                         {
1279                                 TriangleNormal(invertex3f + e[0] * 3, invertex3f + e[1] * 3, invertex3f + e[2] * 3, normal);
1280                                 if (r_shadow_frontsidecasting.integer == (DotProduct(normal, projectdirection) < 0))
1281                                         shadowmarklist[numshadowmark++] = t;
1282                         }
1283                 }
1284                 else
1285                 {
1286                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1287                                 if (r_shadow_frontsidecasting.integer == PointInfrontOfTriangle(projectorigin, invertex3f + e[0] * 3, invertex3f + e[1] * 3, invertex3f + e[2] * 3))
1288                                         shadowmarklist[numshadowmark++] = t;
1289                 }
1290         }
1291         else
1292         {
1293                 // surface box not entirely inside light box, cull each triangle
1294                 if (projectdirection)
1295                 {
1296                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1297                         {
1298                                 v[0] = invertex3f + e[0] * 3;
1299                                 v[1] = invertex3f + e[1] * 3;
1300                                 v[2] = invertex3f + e[2] * 3;
1301                                 TriangleNormal(v[0], v[1], v[2], normal);
1302                                 if (r_shadow_frontsidecasting.integer == (DotProduct(normal, projectdirection) < 0)
1303                                  && TriangleBBoxOverlapsBox(v[0], v[1], v[2], lightmins, lightmaxs))
1304                                         shadowmarklist[numshadowmark++] = t;
1305                         }
1306                 }
1307                 else
1308                 {
1309                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1310                         {
1311                                 v[0] = invertex3f + e[0] * 3;
1312                                 v[1] = invertex3f + e[1] * 3;
1313                                 v[2] = invertex3f + e[2] * 3;
1314                                 if (r_shadow_frontsidecasting.integer == PointInfrontOfTriangle(projectorigin, v[0], v[1], v[2])
1315                                  && TriangleBBoxOverlapsBox(v[0], v[1], v[2], lightmins, lightmaxs))
1316                                         shadowmarklist[numshadowmark++] = t;
1317                         }
1318                 }
1319         }
1320 }
1321
1322 static qboolean R_Shadow_UseZPass(vec3_t mins, vec3_t maxs)
1323 {
1324 #if 1
1325         return false;
1326 #else
1327         if (r_shadow_compilingrtlight || !r_shadow_frontsidecasting.integer || !r_shadow_usezpassifpossible.integer)
1328                 return false;
1329         // check if the shadow volume intersects the near plane
1330         //
1331         // a ray between the eye and light origin may intersect the caster,
1332         // indicating that the shadow may touch the eye location, however we must
1333         // test the near plane (a polygon), not merely the eye location, so it is
1334         // easiest to enlarge the caster bounding shape slightly for this.
1335         // TODO
1336         return true;
1337 #endif
1338 }
1339
1340 void R_Shadow_VolumeFromList(int numverts, int numtris, const float *invertex3f, const int *elements, const int *neighbors, const vec3_t projectorigin, const vec3_t projectdirection, float projectdistance, int nummarktris, const int *marktris, vec3_t trismins, vec3_t trismaxs)
1341 {
1342         int i, tris, outverts;
1343         if (projectdistance < 0.1)
1344         {
1345                 Con_Printf("R_Shadow_Volume: projectdistance %f\n", projectdistance);
1346                 return;
1347         }
1348         if (!numverts || !nummarktris)
1349                 return;
1350         // make sure shadowelements is big enough for this volume
1351         if (maxshadowtriangles < nummarktris*8 || maxshadowvertices < numverts*2)
1352                 R_Shadow_ResizeShadowArrays(numverts, nummarktris, 2, 8);
1353
1354         if (maxvertexupdate < numverts)
1355         {
1356                 maxvertexupdate = numverts;
1357                 if (vertexupdate)
1358                         Mem_Free(vertexupdate);
1359                 if (vertexremap)
1360                         Mem_Free(vertexremap);
1361                 vertexupdate = (int *)Mem_Alloc(r_main_mempool, maxvertexupdate * sizeof(int));
1362                 vertexremap = (int *)Mem_Alloc(r_main_mempool, maxvertexupdate * sizeof(int));
1363                 vertexupdatenum = 0;
1364         }
1365         vertexupdatenum++;
1366         if (vertexupdatenum == 0)
1367         {
1368                 vertexupdatenum = 1;
1369                 memset(vertexupdate, 0, maxvertexupdate * sizeof(int));
1370                 memset(vertexremap, 0, maxvertexupdate * sizeof(int));
1371         }
1372
1373         for (i = 0;i < nummarktris;i++)
1374                 shadowmark[marktris[i]] = shadowmarkcount;
1375
1376         if (r_shadow_compilingrtlight)
1377         {
1378                 // if we're compiling an rtlight, capture the mesh
1379                 //tris = R_Shadow_ConstructShadowVolume_ZPass(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1380                 //Mod_ShadowMesh_AddMesh(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_zpass, NULL, NULL, NULL, shadowvertex3f, NULL, NULL, NULL, NULL, tris, shadowelements);
1381                 tris = R_Shadow_ConstructShadowVolume_ZFail(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1382                 Mod_ShadowMesh_AddMesh(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_zfail, NULL, NULL, NULL, shadowvertex3f, NULL, NULL, NULL, NULL, tris, shadowelements);
1383         }
1384         else if (r_shadow_rendermode == R_SHADOW_RENDERMODE_VISIBLEVOLUMES)
1385         {
1386                 tris = R_Shadow_ConstructShadowVolume_ZFail(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1387                 R_Mesh_PrepareVertices_Vertex3f(outverts, shadowvertex3f, NULL, 0);
1388                 R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, NULL, NULL, 0);
1389         }
1390         else
1391         {
1392                 // decide which type of shadow to generate and set stencil mode
1393                 R_Shadow_RenderMode_StencilShadowVolumes(R_Shadow_UseZPass(trismins, trismaxs));
1394                 // generate the sides or a solid volume, depending on type
1395                 if (r_shadow_rendermode >= R_SHADOW_RENDERMODE_ZPASS_STENCIL && r_shadow_rendermode <= R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE)
1396                         tris = R_Shadow_ConstructShadowVolume_ZPass(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1397                 else
1398                         tris = R_Shadow_ConstructShadowVolume_ZFail(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1399                 r_refdef.stats[r_stat_lights_dynamicshadowtriangles] += tris;
1400                 r_refdef.stats[r_stat_lights_shadowtriangles] += tris;
1401                 if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZPASS_STENCIL)
1402                 {
1403                         // increment stencil if frontface is infront of depthbuffer
1404                         GL_CullFace(r_refdef.view.cullface_front);
1405                         R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_DECR, GL_ALWAYS, 128, 255);
1406                         R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, NULL, NULL, 0);
1407                         // decrement stencil if backface is infront of depthbuffer
1408                         GL_CullFace(r_refdef.view.cullface_back);
1409                         R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_INCR, GL_ALWAYS, 128, 255);
1410                 }
1411                 else if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZFAIL_STENCIL)
1412                 {
1413                         // decrement stencil if backface is behind depthbuffer
1414                         GL_CullFace(r_refdef.view.cullface_front);
1415                         R_SetStencil(true, 255, GL_KEEP, GL_DECR, GL_KEEP, GL_ALWAYS, 128, 255);
1416                         R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, NULL, NULL, 0);
1417                         // increment stencil if frontface is behind depthbuffer
1418                         GL_CullFace(r_refdef.view.cullface_back);
1419                         R_SetStencil(true, 255, GL_KEEP, GL_INCR, GL_KEEP, GL_ALWAYS, 128, 255);
1420                 }
1421                 R_Mesh_PrepareVertices_Vertex3f(outverts, shadowvertex3f, NULL, 0);
1422                 R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, NULL, NULL, 0);
1423         }
1424 }
1425
1426 int R_Shadow_CalcTriangleSideMask(const vec3_t p1, const vec3_t p2, const vec3_t p3, float bias)
1427 {
1428         // p1, p2, p3 are in the cubemap's local coordinate system
1429         // bias = border/(size - border)
1430         int mask = 0x3F;
1431
1432         float dp1 = p1[0] + p1[1], dn1 = p1[0] - p1[1], ap1 = fabs(dp1), an1 = fabs(dn1),
1433                   dp2 = p2[0] + p2[1], dn2 = p2[0] - p2[1], ap2 = fabs(dp2), an2 = fabs(dn2),
1434                   dp3 = p3[0] + p3[1], dn3 = p3[0] - p3[1], ap3 = fabs(dp3), an3 = fabs(dn3);
1435         if(ap1 > bias*an1 && ap2 > bias*an2 && ap3 > bias*an3)
1436                 mask &= (3<<4)
1437                         | (dp1 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2))
1438                         | (dp2 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2))
1439                         | (dp3 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
1440         if(an1 > bias*ap1 && an2 > bias*ap2 && an3 > bias*ap3)
1441                 mask &= (3<<4)
1442                         | (dn1 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2))
1443                         | (dn2 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2))
1444                         | (dn3 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
1445
1446         dp1 = p1[1] + p1[2], dn1 = p1[1] - p1[2], ap1 = fabs(dp1), an1 = fabs(dn1),
1447         dp2 = p2[1] + p2[2], dn2 = p2[1] - p2[2], ap2 = fabs(dp2), an2 = fabs(dn2),
1448         dp3 = p3[1] + p3[2], dn3 = p3[1] - p3[2], ap3 = fabs(dp3), an3 = fabs(dn3);
1449         if(ap1 > bias*an1 && ap2 > bias*an2 && ap3 > bias*an3)
1450                 mask &= (3<<0)
1451                         | (dp1 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4))
1452                         | (dp2 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4))
1453                         | (dp3 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
1454         if(an1 > bias*ap1 && an2 > bias*ap2 && an3 > bias*ap3)
1455                 mask &= (3<<0)
1456                         | (dn1 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4))
1457                         | (dn2 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4))
1458                         | (dn3 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
1459
1460         dp1 = p1[2] + p1[0], dn1 = p1[2] - p1[0], ap1 = fabs(dp1), an1 = fabs(dn1),
1461         dp2 = p2[2] + p2[0], dn2 = p2[2] - p2[0], ap2 = fabs(dp2), an2 = fabs(dn2),
1462         dp3 = p3[2] + p3[0], dn3 = p3[2] - p3[0], ap3 = fabs(dp3), an3 = fabs(dn3);
1463         if(ap1 > bias*an1 && ap2 > bias*an2 && ap3 > bias*an3)
1464                 mask &= (3<<2)
1465                         | (dp1 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0))
1466                         | (dp2 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0))
1467                         | (dp3 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
1468         if(an1 > bias*ap1 && an2 > bias*ap2 && an3 > bias*ap3)
1469                 mask &= (3<<2)
1470                         | (dn1 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0))
1471                         | (dn2 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0))
1472                         | (dn3 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
1473
1474         return mask;
1475 }
1476
1477 static int R_Shadow_CalcBBoxSideMask(const vec3_t mins, const vec3_t maxs, const matrix4x4_t *worldtolight, const matrix4x4_t *radiustolight, float bias)
1478 {
1479         vec3_t center, radius, lightcenter, lightradius, pmin, pmax;
1480         float dp1, dn1, ap1, an1, dp2, dn2, ap2, an2;
1481         int mask = 0x3F;
1482
1483         VectorSubtract(maxs, mins, radius);
1484         VectorScale(radius, 0.5f, radius);
1485         VectorAdd(mins, radius, center);
1486         Matrix4x4_Transform(worldtolight, center, lightcenter);
1487         Matrix4x4_Transform3x3(radiustolight, radius, lightradius);
1488         VectorSubtract(lightcenter, lightradius, pmin);
1489         VectorAdd(lightcenter, lightradius, pmax);
1490
1491         dp1 = pmax[0] + pmax[1], dn1 = pmax[0] - pmin[1], ap1 = fabs(dp1), an1 = fabs(dn1),
1492         dp2 = pmin[0] + pmin[1], dn2 = pmin[0] - pmax[1], ap2 = fabs(dp2), an2 = fabs(dn2);
1493         if(ap1 > bias*an1 && ap2 > bias*an2)
1494                 mask &= (3<<4)
1495                         | (dp1 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2))
1496                         | (dp2 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
1497         if(an1 > bias*ap1 && an2 > bias*ap2)
1498                 mask &= (3<<4)
1499                         | (dn1 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2))
1500                         | (dn2 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
1501
1502         dp1 = pmax[1] + pmax[2], dn1 = pmax[1] - pmin[2], ap1 = fabs(dp1), an1 = fabs(dn1),
1503         dp2 = pmin[1] + pmin[2], dn2 = pmin[1] - pmax[2], ap2 = fabs(dp2), an2 = fabs(dn2);
1504         if(ap1 > bias*an1 && ap2 > bias*an2)
1505                 mask &= (3<<0)
1506                         | (dp1 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4))
1507                         | (dp2 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
1508         if(an1 > bias*ap1 && an2 > bias*ap2)
1509                 mask &= (3<<0)
1510                         | (dn1 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4))
1511                         | (dn2 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
1512
1513         dp1 = pmax[2] + pmax[0], dn1 = pmax[2] - pmin[0], ap1 = fabs(dp1), an1 = fabs(dn1),
1514         dp2 = pmin[2] + pmin[0], dn2 = pmin[2] - pmax[0], ap2 = fabs(dp2), an2 = fabs(dn2);
1515         if(ap1 > bias*an1 && ap2 > bias*an2)
1516                 mask &= (3<<2)
1517                         | (dp1 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0))
1518                         | (dp2 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
1519         if(an1 > bias*ap1 && an2 > bias*ap2)
1520                 mask &= (3<<2)
1521                         | (dn1 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0))
1522                         | (dn2 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
1523
1524         return mask;
1525 }
1526
1527 #define R_Shadow_CalcEntitySideMask(ent, worldtolight, radiustolight, bias) R_Shadow_CalcBBoxSideMask((ent)->mins, (ent)->maxs, worldtolight, radiustolight, bias)
1528
1529 int R_Shadow_CalcSphereSideMask(const vec3_t p, float radius, float bias)
1530 {
1531         // p is in the cubemap's local coordinate system
1532         // bias = border/(size - border)
1533         float dxyp = p[0] + p[1], dxyn = p[0] - p[1], axyp = fabs(dxyp), axyn = fabs(dxyn);
1534         float dyzp = p[1] + p[2], dyzn = p[1] - p[2], ayzp = fabs(dyzp), ayzn = fabs(dyzn);
1535         float dzxp = p[2] + p[0], dzxn = p[2] - p[0], azxp = fabs(dzxp), azxn = fabs(dzxn);
1536         int mask = 0x3F;
1537         if(axyp > bias*axyn + radius) mask &= dxyp < 0 ? ~((1<<0)|(1<<2)) : ~((2<<0)|(2<<2));
1538         if(axyn > bias*axyp + radius) mask &= dxyn < 0 ? ~((1<<0)|(2<<2)) : ~((2<<0)|(1<<2));
1539         if(ayzp > bias*ayzn + radius) mask &= dyzp < 0 ? ~((1<<2)|(1<<4)) : ~((2<<2)|(2<<4));
1540         if(ayzn > bias*ayzp + radius) mask &= dyzn < 0 ? ~((1<<2)|(2<<4)) : ~((2<<2)|(1<<4));
1541         if(azxp > bias*azxn + radius) mask &= dzxp < 0 ? ~((1<<4)|(1<<0)) : ~((2<<4)|(2<<0));
1542         if(azxn > bias*azxp + radius) mask &= dzxn < 0 ? ~((1<<4)|(2<<0)) : ~((2<<4)|(1<<0));
1543         return mask;
1544 }
1545
1546 static int R_Shadow_CullFrustumSides(rtlight_t *rtlight, float size, float border)
1547 {
1548         int i;
1549         vec3_t o, p, n;
1550         int sides = 0x3F, masks[6] = { 3<<4, 3<<4, 3<<0, 3<<0, 3<<2, 3<<2 };
1551         float scale = (size - 2*border)/size, len;
1552         float bias = border / (float)(size - border), dp, dn, ap, an;
1553         // check if cone enclosing side would cross frustum plane
1554         scale = 2 / (scale*scale + 2);
1555         Matrix4x4_OriginFromMatrix(&rtlight->matrix_lighttoworld, o);
1556         for (i = 0;i < 5;i++)
1557         {
1558                 if (PlaneDiff(o, &r_refdef.view.frustum[i]) > -0.03125)
1559                         continue;
1560                 Matrix4x4_Transform3x3(&rtlight->matrix_worldtolight, r_refdef.view.frustum[i].normal, n);
1561                 len = scale*VectorLength2(n);
1562                 if(n[0]*n[0] > len) sides &= n[0] < 0 ? ~(1<<0) : ~(2 << 0);
1563                 if(n[1]*n[1] > len) sides &= n[1] < 0 ? ~(1<<2) : ~(2 << 2);
1564                 if(n[2]*n[2] > len) sides &= n[2] < 0 ? ~(1<<4) : ~(2 << 4);
1565         }
1566         if (PlaneDiff(o, &r_refdef.view.frustum[4]) >= r_refdef.farclip - r_refdef.nearclip + 0.03125)
1567         {
1568                 Matrix4x4_Transform3x3(&rtlight->matrix_worldtolight, r_refdef.view.frustum[4].normal, n);
1569                 len = scale*VectorLength2(n);
1570                 if(n[0]*n[0] > len) sides &= n[0] >= 0 ? ~(1<<0) : ~(2 << 0);
1571                 if(n[1]*n[1] > len) sides &= n[1] >= 0 ? ~(1<<2) : ~(2 << 2);
1572                 if(n[2]*n[2] > len) sides &= n[2] >= 0 ? ~(1<<4) : ~(2 << 4);
1573         }
1574         // this next test usually clips off more sides than the former, but occasionally clips fewer/different ones, so do both and combine results
1575         // check if frustum corners/origin cross plane sides
1576 #if 1
1577         // infinite version, assumes frustum corners merely give direction and extend to infinite distance
1578         Matrix4x4_Transform(&rtlight->matrix_worldtolight, r_refdef.view.origin, p);
1579         dp = p[0] + p[1], dn = p[0] - p[1], ap = fabs(dp), an = fabs(dn);
1580         masks[0] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
1581         masks[1] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
1582         dp = p[1] + p[2], dn = p[1] - p[2], ap = fabs(dp), an = fabs(dn);
1583         masks[2] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
1584         masks[3] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
1585         dp = p[2] + p[0], dn = p[2] - p[0], ap = fabs(dp), an = fabs(dn);
1586         masks[4] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
1587         masks[5] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
1588         for (i = 0;i < 4;i++)
1589         {
1590                 Matrix4x4_Transform(&rtlight->matrix_worldtolight, r_refdef.view.frustumcorner[i], n);
1591                 VectorSubtract(n, p, n);
1592                 dp = n[0] + n[1], dn = n[0] - n[1], ap = fabs(dp), an = fabs(dn);
1593                 if(ap > 0) masks[0] |= dp >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2);
1594                 if(an > 0) masks[1] |= dn >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2);
1595                 dp = n[1] + n[2], dn = n[1] - n[2], ap = fabs(dp), an = fabs(dn);
1596                 if(ap > 0) masks[2] |= dp >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4);
1597                 if(an > 0) masks[3] |= dn >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4);
1598                 dp = n[2] + n[0], dn = n[2] - n[0], ap = fabs(dp), an = fabs(dn);
1599                 if(ap > 0) masks[4] |= dp >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0);
1600                 if(an > 0) masks[5] |= dn >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0);
1601         }
1602 #else
1603         // finite version, assumes corners are a finite distance from origin dependent on far plane
1604         for (i = 0;i < 5;i++)
1605         {
1606                 Matrix4x4_Transform(&rtlight->matrix_worldtolight, !i ? r_refdef.view.origin : r_refdef.view.frustumcorner[i-1], p);
1607                 dp = p[0] + p[1], dn = p[0] - p[1], ap = fabs(dp), an = fabs(dn);
1608                 masks[0] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
1609                 masks[1] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
1610                 dp = p[1] + p[2], dn = p[1] - p[2], ap = fabs(dp), an = fabs(dn);
1611                 masks[2] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
1612                 masks[3] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
1613                 dp = p[2] + p[0], dn = p[2] - p[0], ap = fabs(dp), an = fabs(dn);
1614                 masks[4] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
1615                 masks[5] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
1616         }
1617 #endif
1618         return sides & masks[0] & masks[1] & masks[2] & masks[3] & masks[4] & masks[5];
1619 }
1620
1621 int R_Shadow_ChooseSidesFromBox(int firsttriangle, int numtris, const float *invertex3f, const int *elements, const matrix4x4_t *worldtolight, const vec3_t projectorigin, const vec3_t projectdirection, const vec3_t lightmins, const vec3_t lightmaxs, const vec3_t surfacemins, const vec3_t surfacemaxs, int *totals)
1622 {
1623         int t, tend;
1624         const int *e;
1625         const float *v[3];
1626         float normal[3];
1627         vec3_t p[3];
1628         float bias;
1629         int mask, surfacemask = 0;
1630         if (!BoxesOverlap(lightmins, lightmaxs, surfacemins, surfacemaxs))
1631                 return 0;
1632         bias = r_shadow_shadowmapborder / (float)(r_shadow_shadowmapmaxsize - r_shadow_shadowmapborder);
1633         tend = firsttriangle + numtris;
1634         if (BoxInsideBox(surfacemins, surfacemaxs, lightmins, lightmaxs))
1635         {
1636                 // surface box entirely inside light box, no box cull
1637                 if (projectdirection)
1638                 {
1639                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1640                         {
1641                                 v[0] = invertex3f + e[0] * 3, v[1] = invertex3f + e[1] * 3, v[2] = invertex3f + e[2] * 3;
1642                                 TriangleNormal(v[0], v[1], v[2], normal);
1643                                 if (r_shadow_frontsidecasting.integer == (DotProduct(normal, projectdirection) < 0))
1644                                 {
1645                                         Matrix4x4_Transform(worldtolight, v[0], p[0]), Matrix4x4_Transform(worldtolight, v[1], p[1]), Matrix4x4_Transform(worldtolight, v[2], p[2]);
1646                                         mask = R_Shadow_CalcTriangleSideMask(p[0], p[1], p[2], bias);
1647                                         surfacemask |= mask;
1648                                         if(totals)
1649                                         {
1650                                                 totals[0] += mask&1, totals[1] += (mask>>1)&1, totals[2] += (mask>>2)&1, totals[3] += (mask>>3)&1, totals[4] += (mask>>4)&1, totals[5] += mask>>5;
1651                                                 shadowsides[numshadowsides] = mask;
1652                                                 shadowsideslist[numshadowsides++] = t;
1653                                         }
1654                                 }
1655                         }
1656                 }
1657                 else
1658                 {
1659                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1660                         {
1661                                 v[0] = invertex3f + e[0] * 3, v[1] = invertex3f + e[1] * 3,     v[2] = invertex3f + e[2] * 3;
1662                                 if (r_shadow_frontsidecasting.integer == PointInfrontOfTriangle(projectorigin, v[0], v[1], v[2]))
1663                                 {
1664                                         Matrix4x4_Transform(worldtolight, v[0], p[0]), Matrix4x4_Transform(worldtolight, v[1], p[1]), Matrix4x4_Transform(worldtolight, v[2], p[2]);
1665                                         mask = R_Shadow_CalcTriangleSideMask(p[0], p[1], p[2], bias);
1666                                         surfacemask |= mask;
1667                                         if(totals)
1668                                         {
1669                                                 totals[0] += mask&1, totals[1] += (mask>>1)&1, totals[2] += (mask>>2)&1, totals[3] += (mask>>3)&1, totals[4] += (mask>>4)&1, totals[5] += mask>>5;
1670                                                 shadowsides[numshadowsides] = mask;
1671                                                 shadowsideslist[numshadowsides++] = t;
1672                                         }
1673                                 }
1674                         }
1675                 }
1676         }
1677         else
1678         {
1679                 // surface box not entirely inside light box, cull each triangle
1680                 if (projectdirection)
1681                 {
1682                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1683                         {
1684                                 v[0] = invertex3f + e[0] * 3, v[1] = invertex3f + e[1] * 3,     v[2] = invertex3f + e[2] * 3;
1685                                 TriangleNormal(v[0], v[1], v[2], normal);
1686                                 if (r_shadow_frontsidecasting.integer == (DotProduct(normal, projectdirection) < 0)
1687                                  && TriangleBBoxOverlapsBox(v[0], v[1], v[2], lightmins, lightmaxs))
1688                                 {
1689                                         Matrix4x4_Transform(worldtolight, v[0], p[0]), Matrix4x4_Transform(worldtolight, v[1], p[1]), Matrix4x4_Transform(worldtolight, v[2], p[2]);
1690                                         mask = R_Shadow_CalcTriangleSideMask(p[0], p[1], p[2], bias);
1691                                         surfacemask |= mask;
1692                                         if(totals)
1693                                         {
1694                                                 totals[0] += mask&1, totals[1] += (mask>>1)&1, totals[2] += (mask>>2)&1, totals[3] += (mask>>3)&1, totals[4] += (mask>>4)&1, totals[5] += mask>>5;
1695                                                 shadowsides[numshadowsides] = mask;
1696                                                 shadowsideslist[numshadowsides++] = t;
1697                                         }
1698                                 }
1699                         }
1700                 }
1701                 else
1702                 {
1703                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1704                         {
1705                                 v[0] = invertex3f + e[0] * 3, v[1] = invertex3f + e[1] * 3, v[2] = invertex3f + e[2] * 3;
1706                                 if (r_shadow_frontsidecasting.integer == PointInfrontOfTriangle(projectorigin, v[0], v[1], v[2])
1707                                  && TriangleBBoxOverlapsBox(v[0], v[1], v[2], lightmins, lightmaxs))
1708                                 {
1709                                         Matrix4x4_Transform(worldtolight, v[0], p[0]), Matrix4x4_Transform(worldtolight, v[1], p[1]), Matrix4x4_Transform(worldtolight, v[2], p[2]);
1710                                         mask = R_Shadow_CalcTriangleSideMask(p[0], p[1], p[2], bias);
1711                                         surfacemask |= mask;
1712                                         if(totals)
1713                                         {
1714                                                 totals[0] += mask&1, totals[1] += (mask>>1)&1, totals[2] += (mask>>2)&1, totals[3] += (mask>>3)&1, totals[4] += (mask>>4)&1, totals[5] += mask>>5;
1715                                                 shadowsides[numshadowsides] = mask;
1716                                                 shadowsideslist[numshadowsides++] = t;
1717                                         }
1718                                 }
1719                         }
1720                 }
1721         }
1722         return surfacemask;
1723 }
1724
1725 void R_Shadow_ShadowMapFromList(int numverts, int numtris, const float *vertex3f, const int *elements, int numsidetris, const int *sidetotals, const unsigned char *sides, const int *sidetris)
1726 {
1727         int i, j, outtriangles = 0;
1728         int *outelement3i[6];
1729         if (!numverts || !numsidetris || !r_shadow_compilingrtlight)
1730                 return;
1731         outtriangles = sidetotals[0] + sidetotals[1] + sidetotals[2] + sidetotals[3] + sidetotals[4] + sidetotals[5];
1732         // make sure shadowelements is big enough for this mesh
1733         if (maxshadowtriangles < outtriangles)
1734                 R_Shadow_ResizeShadowArrays(0, outtriangles, 0, 1);
1735
1736         // compute the offset and size of the separate index lists for each cubemap side
1737         outtriangles = 0;
1738         for (i = 0;i < 6;i++)
1739         {
1740                 outelement3i[i] = shadowelements + outtriangles * 3;
1741                 r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap->sideoffsets[i] = outtriangles;
1742                 r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap->sidetotals[i] = sidetotals[i];
1743                 outtriangles += sidetotals[i];
1744         }
1745
1746         // gather up the (sparse) triangles into separate index lists for each cubemap side
1747         for (i = 0;i < numsidetris;i++)
1748         {
1749                 const int *element = elements + sidetris[i] * 3;
1750                 for (j = 0;j < 6;j++)
1751                 {
1752                         if (sides[i] & (1 << j))
1753                         {
1754                                 outelement3i[j][0] = element[0];
1755                                 outelement3i[j][1] = element[1];
1756                                 outelement3i[j][2] = element[2];
1757                                 outelement3i[j] += 3;
1758                         }
1759                 }
1760         }
1761
1762         Mod_ShadowMesh_AddMesh(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap, NULL, NULL, NULL, vertex3f, NULL, NULL, NULL, NULL, outtriangles, shadowelements);
1763 }
1764
1765 static void R_Shadow_MakeTextures_MakeCorona(void)
1766 {
1767         float dx, dy;
1768         int x, y, a;
1769         unsigned char pixels[32][32][4];
1770         for (y = 0;y < 32;y++)
1771         {
1772                 dy = (y - 15.5f) * (1.0f / 16.0f);
1773                 for (x = 0;x < 32;x++)
1774                 {
1775                         dx = (x - 15.5f) * (1.0f / 16.0f);
1776                         a = (int)(((1.0f / (dx * dx + dy * dy + 0.2f)) - (1.0f / (1.0f + 0.2))) * 32.0f / (1.0f / (1.0f + 0.2)));
1777                         a = bound(0, a, 255);
1778                         pixels[y][x][0] = a;
1779                         pixels[y][x][1] = a;
1780                         pixels[y][x][2] = a;
1781                         pixels[y][x][3] = 255;
1782                 }
1783         }
1784         r_shadow_lightcorona = R_SkinFrame_LoadInternalBGRA("lightcorona", TEXF_FORCELINEAR, &pixels[0][0][0], 32, 32, false);
1785 }
1786
1787 static unsigned int R_Shadow_MakeTextures_SamplePoint(float x, float y, float z)
1788 {
1789         float dist = sqrt(x*x+y*y+z*z);
1790         float intensity = dist < 1 ? ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) : 0;
1791         // note this code could suffer byte order issues except that it is multiplying by an integer that reads the same both ways
1792         return (unsigned char)bound(0, intensity * 256.0f, 255) * 0x01010101;
1793 }
1794
1795 static void R_Shadow_MakeTextures(void)
1796 {
1797         int x, y, z;
1798         float intensity, dist;
1799         unsigned int *data;
1800         R_Shadow_FreeShadowMaps();
1801         R_FreeTexturePool(&r_shadow_texturepool);
1802         r_shadow_texturepool = R_AllocTexturePool();
1803         r_shadow_attenlinearscale = r_shadow_lightattenuationlinearscale.value;
1804         r_shadow_attendividebias = r_shadow_lightattenuationdividebias.value;
1805         data = (unsigned int *)Mem_Alloc(tempmempool, max(max(ATTEN3DSIZE*ATTEN3DSIZE*ATTEN3DSIZE, ATTEN2DSIZE*ATTEN2DSIZE), ATTEN1DSIZE) * 4);
1806         // the table includes one additional value to avoid the need to clamp indexing due to minor math errors
1807         for (x = 0;x <= ATTENTABLESIZE;x++)
1808         {
1809                 dist = (x + 0.5f) * (1.0f / ATTENTABLESIZE) * (1.0f / 0.9375);
1810                 intensity = dist < 1 ? ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) : 0;
1811                 r_shadow_attentable[x] = bound(0, intensity, 1);
1812         }
1813         // 1D gradient texture
1814         for (x = 0;x < ATTEN1DSIZE;x++)
1815                 data[x] = R_Shadow_MakeTextures_SamplePoint((x + 0.5f) * (1.0f / ATTEN1DSIZE) * (1.0f / 0.9375), 0, 0);
1816         r_shadow_attenuationgradienttexture = R_LoadTexture2D(r_shadow_texturepool, "attenuation1d", ATTEN1DSIZE, 1, (unsigned char *)data, TEXTYPE_BGRA, TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCELINEAR, -1, NULL);
1817         // 2D circle texture
1818         for (y = 0;y < ATTEN2DSIZE;y++)
1819                 for (x = 0;x < ATTEN2DSIZE;x++)
1820                         data[y*ATTEN2DSIZE+x] = R_Shadow_MakeTextures_SamplePoint(((x + 0.5f) * (2.0f / ATTEN2DSIZE) - 1.0f) * (1.0f / 0.9375), ((y + 0.5f) * (2.0f / ATTEN2DSIZE) - 1.0f) * (1.0f / 0.9375), 0);
1821         r_shadow_attenuation2dtexture = R_LoadTexture2D(r_shadow_texturepool, "attenuation2d", ATTEN2DSIZE, ATTEN2DSIZE, (unsigned char *)data, TEXTYPE_BGRA, TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCELINEAR, -1, NULL);
1822         // 3D sphere texture
1823         if (r_shadow_texture3d.integer && vid.support.ext_texture_3d)
1824         {
1825                 for (z = 0;z < ATTEN3DSIZE;z++)
1826                         for (y = 0;y < ATTEN3DSIZE;y++)
1827                                 for (x = 0;x < ATTEN3DSIZE;x++)
1828                                         data[(z*ATTEN3DSIZE+y)*ATTEN3DSIZE+x] = R_Shadow_MakeTextures_SamplePoint(((x + 0.5f) * (2.0f / ATTEN3DSIZE) - 1.0f) * (1.0f / 0.9375), ((y + 0.5f) * (2.0f / ATTEN3DSIZE) - 1.0f) * (1.0f / 0.9375), ((z + 0.5f) * (2.0f / ATTEN3DSIZE) - 1.0f) * (1.0f / 0.9375));
1829                 r_shadow_attenuation3dtexture = R_LoadTexture3D(r_shadow_texturepool, "attenuation3d", ATTEN3DSIZE, ATTEN3DSIZE, ATTEN3DSIZE, (unsigned char *)data, TEXTYPE_BGRA, TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCELINEAR, -1, NULL);
1830         }
1831         else
1832                 r_shadow_attenuation3dtexture = NULL;
1833         Mem_Free(data);
1834
1835         R_Shadow_MakeTextures_MakeCorona();
1836
1837         // Editor light sprites
1838         r_editlights_sprcursor = R_SkinFrame_LoadInternal8bit("gfx/editlights/cursor", TEXF_ALPHA | TEXF_CLAMP, (const unsigned char *)
1839         "................"
1840         ".3............3."
1841         "..5...2332...5.."
1842         "...7.3....3.7..."
1843         "....7......7...."
1844         "...3.7....7.3..."
1845         "..2...7..7...2.."
1846         "..3..........3.."
1847         "..3..........3.."
1848         "..2...7..7...2.."
1849         "...3.7....7.3..."
1850         "....7......7...."
1851         "...7.3....3.7..."
1852         "..5...2332...5.."
1853         ".3............3."
1854         "................"
1855         , 16, 16, palette_bgra_embeddedpic, palette_bgra_embeddedpic);
1856         r_editlights_sprlight = R_SkinFrame_LoadInternal8bit("gfx/editlights/light", TEXF_ALPHA | TEXF_CLAMP, (const unsigned char *)
1857         "................"
1858         "................"
1859         "......1111......"
1860         "....11233211...."
1861         "...1234554321..."
1862         "...1356776531..."
1863         "..124677776421.."
1864         "..135777777531.."
1865         "..135777777531.."
1866         "..124677776421.."
1867         "...1356776531..."
1868         "...1234554321..."
1869         "....11233211...."
1870         "......1111......"
1871         "................"
1872         "................"
1873         , 16, 16, palette_bgra_embeddedpic, palette_bgra_embeddedpic);
1874         r_editlights_sprnoshadowlight = R_SkinFrame_LoadInternal8bit("gfx/editlights/noshadow", TEXF_ALPHA | TEXF_CLAMP, (const unsigned char *)
1875         "................"
1876         "................"
1877         "......1111......"
1878         "....11233211...."
1879         "...1234554321..."
1880         "...1356226531..."
1881         "..12462..26421.."
1882         "..1352....2531.."
1883         "..1352....2531.."
1884         "..12462..26421.."
1885         "...1356226531..."
1886         "...1234554321..."
1887         "....11233211...."
1888         "......1111......"
1889         "................"
1890         "................"
1891         , 16, 16, palette_bgra_embeddedpic, palette_bgra_embeddedpic);
1892         r_editlights_sprcubemaplight = R_SkinFrame_LoadInternal8bit("gfx/editlights/cubemaplight", TEXF_ALPHA | TEXF_CLAMP, (const unsigned char *)
1893         "................"
1894         "................"
1895         "......2772......"
1896         "....27755772...."
1897         "..277533335772.."
1898         "..753333333357.."
1899         "..777533335777.."
1900         "..735775577537.."
1901         "..733357753337.."
1902         "..733337733337.."
1903         "..753337733357.."
1904         "..277537735772.."
1905         "....27777772...."
1906         "......2772......"
1907         "................"
1908         "................"
1909         , 16, 16, palette_bgra_embeddedpic, palette_bgra_embeddedpic);
1910         r_editlights_sprcubemapnoshadowlight = R_SkinFrame_LoadInternal8bit("gfx/editlights/cubemapnoshadowlight", TEXF_ALPHA | TEXF_CLAMP, (const unsigned char *)
1911         "................"
1912         "................"
1913         "......2772......"
1914         "....27722772...."
1915         "..2772....2772.."
1916         "..72........27.."
1917         "..7772....2777.."
1918         "..7.27722772.7.."
1919         "..7...2772...7.."
1920         "..7....77....7.."
1921         "..72...77...27.."
1922         "..2772.77.2772.."
1923         "....27777772...."
1924         "......2772......"
1925         "................"
1926         "................"
1927         , 16, 16, palette_bgra_embeddedpic, palette_bgra_embeddedpic);
1928         r_editlights_sprselection = R_SkinFrame_LoadInternal8bit("gfx/editlights/selection", TEXF_ALPHA | TEXF_CLAMP, (unsigned char *)
1929         "................"
1930         ".777752..257777."
1931         ".742........247."
1932         ".72..........27."
1933         ".7............7."
1934         ".5............5."
1935         ".2............2."
1936         "................"
1937         "................"
1938         ".2............2."
1939         ".5............5."
1940         ".7............7."
1941         ".72..........27."
1942         ".742........247."
1943         ".777752..257777."
1944         "................"
1945         , 16, 16, palette_bgra_embeddedpic, palette_bgra_embeddedpic);
1946 }
1947
1948 void R_Shadow_ValidateCvars(void)
1949 {
1950         if (r_shadow_texture3d.integer && !vid.support.ext_texture_3d)
1951                 Cvar_SetValueQuick(&r_shadow_texture3d, 0);
1952         if (gl_ext_separatestencil.integer && !vid.support.ati_separate_stencil)
1953                 Cvar_SetValueQuick(&gl_ext_separatestencil, 0);
1954         if (gl_ext_stenciltwoside.integer && !vid.support.ext_stencil_two_side)
1955                 Cvar_SetValueQuick(&gl_ext_stenciltwoside, 0);
1956 }
1957
1958 void R_Shadow_RenderMode_Begin(void)
1959 {
1960 #if 0
1961         GLint drawbuffer;
1962         GLint readbuffer;
1963 #endif
1964         R_Shadow_ValidateCvars();
1965
1966         if (!r_shadow_attenuation2dtexture
1967          || (!r_shadow_attenuation3dtexture && r_shadow_texture3d.integer)
1968          || r_shadow_lightattenuationdividebias.value != r_shadow_attendividebias
1969          || r_shadow_lightattenuationlinearscale.value != r_shadow_attenlinearscale)
1970                 R_Shadow_MakeTextures();
1971
1972         CHECKGLERROR
1973         R_Mesh_ResetTextureState();
1974         GL_BlendFunc(GL_ONE, GL_ZERO);
1975         GL_DepthRange(0, 1);
1976         GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);
1977         GL_DepthTest(true);
1978         GL_DepthMask(false);
1979         GL_Color(0, 0, 0, 1);
1980         GL_Scissor(r_refdef.view.viewport.x, r_refdef.view.viewport.y, r_refdef.view.viewport.width, r_refdef.view.viewport.height);
1981
1982         r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
1983
1984         if (gl_ext_separatestencil.integer && vid.support.ati_separate_stencil)
1985         {
1986                 r_shadow_shadowingrendermode_zpass = R_SHADOW_RENDERMODE_ZPASS_SEPARATESTENCIL;
1987                 r_shadow_shadowingrendermode_zfail = R_SHADOW_RENDERMODE_ZFAIL_SEPARATESTENCIL;
1988         }
1989         else if (gl_ext_stenciltwoside.integer && vid.support.ext_stencil_two_side)
1990         {
1991                 r_shadow_shadowingrendermode_zpass = R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE;
1992                 r_shadow_shadowingrendermode_zfail = R_SHADOW_RENDERMODE_ZFAIL_STENCILTWOSIDE;
1993         }
1994         else
1995         {
1996                 r_shadow_shadowingrendermode_zpass = R_SHADOW_RENDERMODE_ZPASS_STENCIL;
1997                 r_shadow_shadowingrendermode_zfail = R_SHADOW_RENDERMODE_ZFAIL_STENCIL;
1998         }
1999
2000         switch(vid.renderpath)
2001         {
2002         case RENDERPATH_GL20:
2003         case RENDERPATH_D3D9:
2004         case RENDERPATH_D3D10:
2005         case RENDERPATH_D3D11:
2006         case RENDERPATH_SOFT:
2007         case RENDERPATH_GLES2:
2008                 r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_GLSL;
2009                 break;
2010         case RENDERPATH_GL11:
2011         case RENDERPATH_GL13:
2012         case RENDERPATH_GLES1:
2013                 if (r_textureunits.integer >= 2 && vid.texunits >= 2 && r_shadow_texture3d.integer && r_shadow_attenuation3dtexture)
2014                         r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_VERTEX3DATTEN;
2015                 else if (r_textureunits.integer >= 3 && vid.texunits >= 3)
2016                         r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_VERTEX2D1DATTEN;
2017                 else if (r_textureunits.integer >= 2 && vid.texunits >= 2)
2018                         r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_VERTEX2DATTEN;
2019                 else
2020                         r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_VERTEX;
2021                 break;
2022         }
2023
2024         CHECKGLERROR
2025 #if 0
2026         qglGetIntegerv(GL_DRAW_BUFFER, &drawbuffer);CHECKGLERROR
2027         qglGetIntegerv(GL_READ_BUFFER, &readbuffer);CHECKGLERROR
2028         r_shadow_drawbuffer = drawbuffer;
2029         r_shadow_readbuffer = readbuffer;
2030 #endif
2031         r_shadow_cullface_front = r_refdef.view.cullface_front;
2032         r_shadow_cullface_back = r_refdef.view.cullface_back;
2033 }
2034
2035 void R_Shadow_RenderMode_ActiveLight(const rtlight_t *rtlight)
2036 {
2037         rsurface.rtlight = rtlight;
2038 }
2039
2040 void R_Shadow_RenderMode_Reset(void)
2041 {
2042         R_Mesh_ResetTextureState();
2043         R_Mesh_SetRenderTargets(r_shadow_fb_fbo, r_shadow_fb_depthtexture, r_shadow_fb_colortexture, NULL, NULL, NULL);
2044         R_SetViewport(&r_refdef.view.viewport);
2045         GL_Scissor(r_shadow_lightscissor[0], r_shadow_lightscissor[1], r_shadow_lightscissor[2], r_shadow_lightscissor[3]);
2046         GL_DepthRange(0, 1);
2047         GL_DepthTest(true);
2048         GL_DepthMask(false);
2049         GL_DepthFunc(GL_LEQUAL);
2050         GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);CHECKGLERROR
2051         r_refdef.view.cullface_front = r_shadow_cullface_front;
2052         r_refdef.view.cullface_back = r_shadow_cullface_back;
2053         GL_CullFace(r_refdef.view.cullface_back);
2054         GL_Color(1, 1, 1, 1);
2055         GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
2056         GL_BlendFunc(GL_ONE, GL_ZERO);
2057         R_SetupShader_Generic_NoTexture(false, false);
2058         r_shadow_usingshadowmap2d = false;
2059         r_shadow_usingshadowmaportho = false;
2060         R_SetStencil(false, 255, GL_KEEP, GL_KEEP, GL_KEEP, GL_ALWAYS, 128, 255);
2061 }
2062
2063 void R_Shadow_ClearStencil(void)
2064 {
2065         GL_Clear(GL_STENCIL_BUFFER_BIT, NULL, 1.0f, 128);
2066         r_refdef.stats[r_stat_lights_clears]++;
2067 }
2068
2069 void R_Shadow_RenderMode_StencilShadowVolumes(qboolean zpass)
2070 {
2071         r_shadow_rendermode_t mode = zpass ? r_shadow_shadowingrendermode_zpass : r_shadow_shadowingrendermode_zfail;
2072         if (r_shadow_rendermode == mode)
2073                 return;
2074         R_Shadow_RenderMode_Reset();
2075         GL_DepthFunc(GL_LESS);
2076         GL_ColorMask(0, 0, 0, 0);
2077         GL_PolygonOffset(r_refdef.shadowpolygonfactor, r_refdef.shadowpolygonoffset);CHECKGLERROR
2078         GL_CullFace(GL_NONE);
2079         R_SetupShader_DepthOrShadow(false, false, false); // FIXME test if we have a skeletal model?
2080         r_shadow_rendermode = mode;
2081         switch(mode)
2082         {
2083         default:
2084                 break;
2085         case R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE:
2086         case R_SHADOW_RENDERMODE_ZPASS_SEPARATESTENCIL:
2087                 R_SetStencilSeparate(true, 255, GL_KEEP, GL_KEEP, GL_INCR, GL_KEEP, GL_KEEP, GL_DECR, GL_ALWAYS, GL_ALWAYS, 128, 255);
2088                 break;
2089         case R_SHADOW_RENDERMODE_ZFAIL_STENCILTWOSIDE:
2090         case R_SHADOW_RENDERMODE_ZFAIL_SEPARATESTENCIL:
2091                 R_SetStencilSeparate(true, 255, GL_KEEP, GL_INCR, GL_KEEP, GL_KEEP, GL_DECR, GL_KEEP, GL_ALWAYS, GL_ALWAYS, 128, 255);
2092                 break;
2093         }
2094 }
2095
2096 static void R_Shadow_MakeVSDCT(void)
2097 {
2098         // maps to a 2x3 texture rectangle with normalized coordinates
2099         // +-
2100         // XX
2101         // YY
2102         // ZZ
2103         // stores abs(dir.xy), offset.xy/2.5
2104         unsigned char data[4*6] =
2105         {
2106                 255, 0, 0x33, 0x33, // +X: <1, 0>, <0.5, 0.5>
2107                 255, 0, 0x99, 0x33, // -X: <1, 0>, <1.5, 0.5>
2108                 0, 255, 0x33, 0x99, // +Y: <0, 1>, <0.5, 1.5>
2109                 0, 255, 0x99, 0x99, // -Y: <0, 1>, <1.5, 1.5>
2110                 0,   0, 0x33, 0xFF, // +Z: <0, 0>, <0.5, 2.5>
2111                 0,   0, 0x99, 0xFF, // -Z: <0, 0>, <1.5, 2.5>
2112         };
2113         r_shadow_shadowmapvsdcttexture = R_LoadTextureCubeMap(r_shadow_texturepool, "shadowmapvsdct", 1, data, TEXTYPE_RGBA, TEXF_FORCENEAREST | TEXF_CLAMP | TEXF_ALPHA, -1, NULL);
2114 }
2115
2116 static void R_Shadow_MakeShadowMap(int side, int size)
2117 {
2118         switch (r_shadow_shadowmode)
2119         {
2120         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
2121                 if (r_shadow_shadowmap2ddepthtexture) return;
2122                 if (r_fb.usedepthtextures)
2123                 {
2124                         r_shadow_shadowmap2ddepthtexture = R_LoadTextureShadowMap2D(r_shadow_texturepool, "shadowmap", size*2, size*(vid.support.arb_texture_non_power_of_two ? 3 : 4), r_shadow_shadowmapdepthbits >= 24 ? (r_shadow_shadowmapsampler ? TEXTYPE_SHADOWMAP24_COMP : TEXTYPE_SHADOWMAP24_RAW) : (r_shadow_shadowmapsampler ? TEXTYPE_SHADOWMAP16_COMP : TEXTYPE_SHADOWMAP16_RAW), r_shadow_shadowmapsampler);
2125                         r_shadow_shadowmap2ddepthbuffer = NULL;
2126                         r_shadow_fbo2d = R_Mesh_CreateFramebufferObject(r_shadow_shadowmap2ddepthtexture, NULL, NULL, NULL, NULL);
2127                 }
2128                 else
2129                 {
2130                         r_shadow_shadowmap2ddepthtexture = R_LoadTexture2D(r_shadow_texturepool, "shadowmaprendertarget", size*2, size*(vid.support.arb_texture_non_power_of_two ? 3 : 4), NULL, TEXTYPE_COLORBUFFER, TEXF_RENDERTARGET | TEXF_FORCENEAREST | TEXF_CLAMP | TEXF_ALPHA, -1, NULL);
2131                         r_shadow_shadowmap2ddepthbuffer = R_LoadTextureRenderBuffer(r_shadow_texturepool, "shadowmap", size*2, size*(vid.support.arb_texture_non_power_of_two ? 3 : 4), r_shadow_shadowmapdepthbits >= 24 ? TEXTYPE_DEPTHBUFFER24 : TEXTYPE_DEPTHBUFFER16);
2132                         r_shadow_fbo2d = R_Mesh_CreateFramebufferObject(r_shadow_shadowmap2ddepthbuffer, r_shadow_shadowmap2ddepthtexture, NULL, NULL, NULL);
2133                 }
2134                 break;
2135         default:
2136                 return;
2137         }
2138 }
2139
2140 static void R_Shadow_RenderMode_ShadowMap(int side, int clear, int size)
2141 {
2142         float nearclip, farclip, bias;
2143         r_viewport_t viewport;
2144         int flipped;
2145         GLuint fbo2d = 0;
2146         float clearcolor[4];
2147         nearclip = r_shadow_shadowmapping_nearclip.value / rsurface.rtlight->radius;
2148         farclip = 1.0f;
2149         bias = r_shadow_shadowmapping_bias.value * nearclip * (1024.0f / size);// * rsurface.rtlight->radius;
2150         r_shadow_shadowmap_parameters[1] = -nearclip * farclip / (farclip - nearclip) - 0.5f * bias;
2151         r_shadow_shadowmap_parameters[3] = 0.5f + 0.5f * (farclip + nearclip) / (farclip - nearclip);
2152         r_shadow_shadowmapside = side;
2153         r_shadow_shadowmapsize = size;
2154
2155         r_shadow_shadowmap_parameters[0] = 0.5f * (size - r_shadow_shadowmapborder);
2156         r_shadow_shadowmap_parameters[2] = r_shadow_shadowmapvsdct ? 2.5f*size : size;
2157         R_Viewport_InitRectSideView(&viewport, &rsurface.rtlight->matrix_lighttoworld, side, size, r_shadow_shadowmapborder, nearclip, farclip, NULL);
2158         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_SHADOWMAP2D) goto init_done;
2159
2160         // complex unrolled cube approach (more flexible)
2161         if (r_shadow_shadowmapvsdct && !r_shadow_shadowmapvsdcttexture)
2162                 R_Shadow_MakeVSDCT();
2163         if (!r_shadow_shadowmap2ddepthtexture)
2164                 R_Shadow_MakeShadowMap(side, r_shadow_shadowmapmaxsize);
2165         fbo2d = r_shadow_fbo2d;
2166         r_shadow_shadowmap_texturescale[0] = 1.0f / R_TextureWidth(r_shadow_shadowmap2ddepthtexture);
2167         r_shadow_shadowmap_texturescale[1] = 1.0f / R_TextureHeight(r_shadow_shadowmap2ddepthtexture);
2168         r_shadow_rendermode = R_SHADOW_RENDERMODE_SHADOWMAP2D;
2169
2170         R_Mesh_ResetTextureState();
2171         R_Shadow_RenderMode_Reset();
2172         if (r_shadow_shadowmap2ddepthbuffer)
2173                 R_Mesh_SetRenderTargets(fbo2d, r_shadow_shadowmap2ddepthbuffer, r_shadow_shadowmap2ddepthtexture, NULL, NULL, NULL);
2174         else
2175                 R_Mesh_SetRenderTargets(fbo2d, r_shadow_shadowmap2ddepthtexture, NULL, NULL, NULL, NULL);
2176         R_SetupShader_DepthOrShadow(true, r_shadow_shadowmap2ddepthbuffer != NULL, false); // FIXME test if we have a skeletal model?
2177         GL_PolygonOffset(r_shadow_shadowmapping_polygonfactor.value, r_shadow_shadowmapping_polygonoffset.value);
2178         GL_DepthMask(true);
2179         GL_DepthTest(true);
2180
2181 init_done:
2182         R_SetViewport(&viewport);
2183         flipped = (side & 1) ^ (side >> 2);
2184         r_refdef.view.cullface_front = flipped ? r_shadow_cullface_back : r_shadow_cullface_front;
2185         r_refdef.view.cullface_back = flipped ? r_shadow_cullface_front : r_shadow_cullface_back;
2186         if (r_shadow_shadowmap2ddepthbuffer)
2187         {
2188                 // completely different meaning than in depthtexture approach
2189                 r_shadow_shadowmap_parameters[1] = 0;
2190                 r_shadow_shadowmap_parameters[3] = -bias;
2191         }
2192         Vector4Set(clearcolor, 1,1,1,1);
2193         if (r_shadow_shadowmap2ddepthbuffer)
2194                 GL_ColorMask(1,1,1,1);
2195         else
2196                 GL_ColorMask(0,0,0,0);
2197         switch(vid.renderpath)
2198         {
2199         case RENDERPATH_GL11:
2200         case RENDERPATH_GL13:
2201         case RENDERPATH_GL20:
2202         case RENDERPATH_SOFT:
2203         case RENDERPATH_GLES1:
2204         case RENDERPATH_GLES2:
2205                 GL_CullFace(r_refdef.view.cullface_back);
2206                 // OpenGL lets us scissor larger than the viewport, so go ahead and clear all views at once
2207                 if ((clear & ((2 << side) - 1)) == (1 << side)) // only clear if the side is the first in the mask
2208                 {
2209                         // get tightest scissor rectangle that encloses all viewports in the clear mask
2210                         int x1 = clear & 0x15 ? 0 : size;
2211                         int x2 = clear & 0x2A ? 2 * size : size;
2212                         int y1 = clear & 0x03 ? 0 : (clear & 0xC ? size : 2 * size);
2213                         int y2 = clear & 0x30 ? 3 * size : (clear & 0xC ? 2 * size : size);
2214                         GL_Scissor(x1, y1, x2 - x1, y2 - y1);
2215                         if (clear)
2216                         {
2217                                 if (r_shadow_shadowmap2ddepthbuffer)
2218                                         GL_Clear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT, clearcolor, 1.0f, 0);
2219                                 else
2220                                         GL_Clear(GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
2221                         }
2222                 }
2223                 GL_Scissor(viewport.x, viewport.y, viewport.width, viewport.height);
2224                 break;
2225         case RENDERPATH_D3D9:
2226         case RENDERPATH_D3D10:
2227         case RENDERPATH_D3D11:
2228                 // we invert the cull mode because we flip the projection matrix
2229                 // NOTE: this actually does nothing because the DrawShadowMap code sets it to doublesided...
2230                 GL_CullFace(r_refdef.view.cullface_front);
2231                 // D3D considers it an error to use a scissor larger than the viewport...  clear just this view
2232                 GL_Scissor(viewport.x, viewport.y, viewport.width, viewport.height);
2233                 if (clear)
2234                 {
2235                         if (r_shadow_shadowmap2ddepthbuffer)
2236                                 GL_Clear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT, clearcolor, 1.0f, 0);
2237                         else
2238                                 GL_Clear(GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
2239                 }
2240                 break;
2241         }
2242 }
2243
2244 void R_Shadow_RenderMode_Lighting(qboolean stenciltest, qboolean transparent, qboolean shadowmapping)
2245 {
2246         R_Mesh_ResetTextureState();
2247         if (transparent)
2248         {
2249                 r_shadow_lightscissor[0] = r_refdef.view.viewport.x;
2250                 r_shadow_lightscissor[1] = r_refdef.view.viewport.y;
2251                 r_shadow_lightscissor[2] = r_refdef.view.viewport.width;
2252                 r_shadow_lightscissor[3] = r_refdef.view.viewport.height;
2253         }
2254         R_Shadow_RenderMode_Reset();
2255         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2256         if (!transparent)
2257                 GL_DepthFunc(GL_EQUAL);
2258         // do global setup needed for the chosen lighting mode
2259         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_LIGHT_GLSL)
2260                 GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 0);
2261         r_shadow_usingshadowmap2d = shadowmapping;
2262         r_shadow_rendermode = r_shadow_lightingrendermode;
2263         // only draw light where this geometry was already rendered AND the
2264         // stencil is 128 (values other than this mean shadow)
2265         if (stenciltest)
2266                 R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_KEEP, GL_EQUAL, 128, 255);
2267         else
2268                 R_SetStencil(false, 255, GL_KEEP, GL_KEEP, GL_KEEP, GL_ALWAYS, 128, 255);
2269 }
2270
2271 static const unsigned short bboxelements[36] =
2272 {
2273         5, 1, 3, 5, 3, 7,
2274         6, 2, 0, 6, 0, 4,
2275         7, 3, 2, 7, 2, 6,
2276         4, 0, 1, 4, 1, 5,
2277         4, 5, 7, 4, 7, 6,
2278         1, 0, 2, 1, 2, 3,
2279 };
2280
2281 static const float bboxpoints[8][3] =
2282 {
2283         {-1,-1,-1},
2284         { 1,-1,-1},
2285         {-1, 1,-1},
2286         { 1, 1,-1},
2287         {-1,-1, 1},
2288         { 1,-1, 1},
2289         {-1, 1, 1},
2290         { 1, 1, 1},
2291 };
2292
2293 void R_Shadow_RenderMode_DrawDeferredLight(qboolean stenciltest, qboolean shadowmapping)
2294 {
2295         int i;
2296         float vertex3f[8*3];
2297         const matrix4x4_t *matrix = &rsurface.rtlight->matrix_lighttoworld;
2298 // do global setup needed for the chosen lighting mode
2299         R_Shadow_RenderMode_Reset();
2300         r_shadow_rendermode = r_shadow_lightingrendermode;
2301         R_EntityMatrix(&identitymatrix);
2302         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2303         // only draw light where this geometry was already rendered AND the
2304         // stencil is 128 (values other than this mean shadow)
2305         R_SetStencil(stenciltest, 255, GL_KEEP, GL_KEEP, GL_KEEP, GL_EQUAL, 128, 255);
2306         if (rsurface.rtlight->specularscale > 0 && r_shadow_gloss.integer > 0)
2307                 R_Mesh_SetRenderTargets(r_shadow_prepasslightingdiffusespecularfbo, r_shadow_prepassgeometrydepthbuffer, r_shadow_prepasslightingdiffusetexture, r_shadow_prepasslightingspeculartexture, NULL, NULL);
2308         else
2309                 R_Mesh_SetRenderTargets(r_shadow_prepasslightingdiffusefbo, r_shadow_prepassgeometrydepthbuffer, r_shadow_prepasslightingdiffusetexture, NULL, NULL, NULL);
2310
2311         r_shadow_usingshadowmap2d = shadowmapping;
2312
2313         // render the lighting
2314         R_SetupShader_DeferredLight(rsurface.rtlight);
2315         for (i = 0;i < 8;i++)
2316                 Matrix4x4_Transform(matrix, bboxpoints[i], vertex3f + i*3);
2317         GL_ColorMask(1,1,1,1);
2318         GL_DepthMask(false);
2319         GL_DepthRange(0, 1);
2320         GL_PolygonOffset(0, 0);
2321         GL_DepthTest(true);
2322         GL_DepthFunc(GL_GREATER);
2323         GL_CullFace(r_refdef.view.cullface_back);
2324         R_Mesh_PrepareVertices_Vertex3f(8, vertex3f, NULL, 0);
2325         R_Mesh_Draw(0, 8, 0, 12, NULL, NULL, 0, bboxelements, NULL, 0);
2326 }
2327
2328 void R_Shadow_UpdateBounceGridTexture(void)
2329 {
2330 #define MAXBOUNCEGRIDPARTICLESPERLIGHT 1048576
2331         dlight_t *light;
2332         int flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
2333         int bouncecount;
2334         int hitsupercontentsmask;
2335         int maxbounce;
2336         int numpixels;
2337         int resolution[3];
2338         int shootparticles;
2339         int shotparticles;
2340         int photoncount;
2341         int tex[3];
2342         trace_t cliptrace;
2343         //trace_t cliptrace2;
2344         //trace_t cliptrace3;
2345         unsigned char *pixel;
2346         unsigned char *pixels;
2347         float *highpixel;
2348         float *highpixels;
2349         unsigned int lightindex;
2350         unsigned int range;
2351         unsigned int range1;
2352         unsigned int range2;
2353         unsigned int seed = (unsigned int)(realtime * 1000.0f);
2354         vec3_t shotcolor;
2355         vec3_t baseshotcolor;
2356         vec3_t surfcolor;
2357         vec3_t clipend;
2358         vec3_t clipstart;
2359         vec3_t clipdiff;
2360         vec3_t ispacing;
2361         vec3_t maxs;
2362         vec3_t mins;
2363         vec3_t size;
2364         vec3_t spacing;
2365         vec3_t lightcolor;
2366         vec3_t steppos;
2367         vec3_t stepdelta;
2368         vec3_t cullmins, cullmaxs;
2369         vec_t radius;
2370         vec_t s;
2371         vec_t lightintensity;
2372         vec_t photonscaling;
2373         vec_t photonresidual;
2374         float m[16];
2375         float texlerp[2][3];
2376         float splatcolor[32];
2377         float pixelweight[8];
2378         float w;
2379         int c[4];
2380         int pixelindex[8];
2381         int corner;
2382         int pixelsperband;
2383         int pixelband;
2384         int pixelbands;
2385         int numsteps;
2386         int step;
2387         int x, y, z;
2388         rtlight_t *rtlight;
2389         r_shadow_bouncegrid_settings_t settings;
2390         qboolean enable = r_shadow_bouncegrid.integer != 0 && r_refdef.scene.worldmodel;
2391         qboolean allowdirectionalshading = false;
2392         switch(vid.renderpath)
2393         {
2394         case RENDERPATH_GL20:
2395                 allowdirectionalshading = true;
2396                 if (!vid.support.ext_texture_3d)
2397                         return;
2398                 break;
2399         case RENDERPATH_GLES2:
2400                 // for performance reasons, do not use directional shading on GLES devices
2401                 if (!vid.support.ext_texture_3d)
2402                         return;
2403                 break;
2404                 // these renderpaths do not currently have the code to display the bouncegrid, so disable it on them...
2405         case RENDERPATH_GL11:
2406         case RENDERPATH_GL13:
2407         case RENDERPATH_GLES1:
2408         case RENDERPATH_SOFT:
2409         case RENDERPATH_D3D9:
2410         case RENDERPATH_D3D10:
2411         case RENDERPATH_D3D11:
2412                 return;
2413         }
2414
2415         r_shadow_bouncegridintensity = r_shadow_bouncegrid_intensity.value;
2416
2417         // see if there are really any lights to render...
2418         if (enable && r_shadow_bouncegrid_static.integer)
2419         {
2420                 enable = false;
2421                 range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
2422                 for (lightindex = 0;lightindex < range;lightindex++)
2423                 {
2424                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
2425                         if (!light || !(light->flags & flag))
2426                                 continue;
2427                         rtlight = &light->rtlight;
2428                         // when static, we skip styled lights because they tend to change...
2429                         if (rtlight->style > 0)
2430                                 continue;
2431                         VectorScale(rtlight->color, (rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale), lightcolor);
2432                         if (!VectorLength2(lightcolor))
2433                                 continue;
2434                         enable = true;
2435                         break;
2436                 }
2437         }
2438
2439         if (!enable)
2440         {
2441                 if (r_shadow_bouncegridtexture)
2442                 {
2443                         R_FreeTexture(r_shadow_bouncegridtexture);
2444                         r_shadow_bouncegridtexture = NULL;
2445                 }
2446                 if (r_shadow_bouncegridpixels)
2447                         Mem_Free(r_shadow_bouncegridpixels);
2448                 r_shadow_bouncegridpixels = NULL;
2449                 if (r_shadow_bouncegridhighpixels)
2450                         Mem_Free(r_shadow_bouncegridhighpixels);
2451                 r_shadow_bouncegridhighpixels = NULL;
2452                 r_shadow_bouncegridnumpixels = 0;
2453                 r_shadow_bouncegriddirectional = false;
2454                 return;
2455         }
2456
2457         // build up a complete collection of the desired settings, so that memcmp can be used to compare parameters
2458         memset(&settings, 0, sizeof(settings));
2459         settings.staticmode                    = r_shadow_bouncegrid_static.integer != 0;
2460         settings.bounceanglediffuse            = r_shadow_bouncegrid_bounceanglediffuse.integer != 0;
2461         settings.directionalshading            = (r_shadow_bouncegrid_static.integer != 0 ? r_shadow_bouncegrid_static_directionalshading.integer != 0 : r_shadow_bouncegrid_directionalshading.integer != 0) && allowdirectionalshading;
2462         settings.dlightparticlemultiplier      = r_shadow_bouncegrid_dlightparticlemultiplier.value;
2463         settings.hitmodels                     = r_shadow_bouncegrid_hitmodels.integer != 0;
2464         settings.includedirectlighting         = r_shadow_bouncegrid_includedirectlighting.integer != 0 || r_shadow_bouncegrid.integer == 2;
2465         settings.lightradiusscale              = (r_shadow_bouncegrid_static.integer != 0 ? r_shadow_bouncegrid_static_lightradiusscale.value : r_shadow_bouncegrid_lightradiusscale.value);
2466         settings.maxbounce                     = (r_shadow_bouncegrid_static.integer != 0 ? r_shadow_bouncegrid_static_maxbounce.integer : r_shadow_bouncegrid_maxbounce.integer);
2467         settings.particlebounceintensity       = r_shadow_bouncegrid_particlebounceintensity.value;
2468         settings.particleintensity             = r_shadow_bouncegrid_particleintensity.value * 16384.0f * (settings.directionalshading ? 4.0f : 1.0f) / (r_shadow_bouncegrid_spacing.value * r_shadow_bouncegrid_spacing.value);
2469         settings.photons                       = r_shadow_bouncegrid_static.integer ? r_shadow_bouncegrid_static_photons.integer : r_shadow_bouncegrid_photons.integer;
2470         settings.spacing[0]                    = r_shadow_bouncegrid_spacing.value;
2471         settings.spacing[1]                    = r_shadow_bouncegrid_spacing.value;
2472         settings.spacing[2]                    = r_shadow_bouncegrid_spacing.value;
2473         settings.stablerandom                  = r_shadow_bouncegrid_stablerandom.integer;
2474
2475         // bound the values for sanity
2476         settings.photons = bound(1, settings.photons, 1048576);
2477         settings.lightradiusscale = bound(0.0001f, settings.lightradiusscale, 1024.0f);
2478         settings.maxbounce = bound(0, settings.maxbounce, 16);
2479         settings.spacing[0] = bound(1, settings.spacing[0], 512);
2480         settings.spacing[1] = bound(1, settings.spacing[1], 512);
2481         settings.spacing[2] = bound(1, settings.spacing[2], 512);
2482
2483         // get the spacing values
2484         spacing[0] = settings.spacing[0];
2485         spacing[1] = settings.spacing[1];
2486         spacing[2] = settings.spacing[2];
2487         ispacing[0] = 1.0f / spacing[0];
2488         ispacing[1] = 1.0f / spacing[1];
2489         ispacing[2] = 1.0f / spacing[2];
2490
2491         // calculate texture size enclosing entire world bounds at the spacing
2492         VectorMA(r_refdef.scene.worldmodel->normalmins, -2.0f, spacing, mins);
2493         VectorMA(r_refdef.scene.worldmodel->normalmaxs, 2.0f, spacing, maxs);
2494         VectorSubtract(maxs, mins, size);
2495         // now we can calculate the resolution we want
2496         c[0] = (int)floor(size[0] / spacing[0] + 0.5f);
2497         c[1] = (int)floor(size[1] / spacing[1] + 0.5f);
2498         c[2] = (int)floor(size[2] / spacing[2] + 0.5f);
2499         // figure out the exact texture size (honoring power of 2 if required)
2500         c[0] = bound(4, c[0], (int)vid.maxtexturesize_3d);
2501         c[1] = bound(4, c[1], (int)vid.maxtexturesize_3d);
2502         c[2] = bound(4, c[2], (int)vid.maxtexturesize_3d);
2503         if (vid.support.arb_texture_non_power_of_two)
2504         {
2505                 resolution[0] = c[0];
2506                 resolution[1] = c[1];
2507                 resolution[2] = c[2];
2508         }
2509         else
2510         {
2511                 for (resolution[0] = 4;resolution[0] < c[0];resolution[0]*=2) ;
2512                 for (resolution[1] = 4;resolution[1] < c[1];resolution[1]*=2) ;
2513                 for (resolution[2] = 4;resolution[2] < c[2];resolution[2]*=2) ;
2514         }
2515         size[0] = spacing[0] * resolution[0];
2516         size[1] = spacing[1] * resolution[1];
2517         size[2] = spacing[2] * resolution[2];
2518
2519         // if dynamic we may or may not want to use the world bounds
2520         // if the dynamic size is smaller than the world bounds, use it instead
2521         if (!settings.staticmode && (r_shadow_bouncegrid_x.integer * r_shadow_bouncegrid_y.integer * r_shadow_bouncegrid_z.integer < resolution[0] * resolution[1] * resolution[2]))
2522         {
2523                 // we know the resolution we want
2524                 c[0] = r_shadow_bouncegrid_x.integer;
2525                 c[1] = r_shadow_bouncegrid_y.integer;
2526                 c[2] = r_shadow_bouncegrid_z.integer;
2527                 // now we can calculate the texture size (power of 2 if required)
2528                 c[0] = bound(4, c[0], (int)vid.maxtexturesize_3d);
2529                 c[1] = bound(4, c[1], (int)vid.maxtexturesize_3d);
2530                 c[2] = bound(4, c[2], (int)vid.maxtexturesize_3d);
2531                 if (vid.support.arb_texture_non_power_of_two)
2532                 {
2533                         resolution[0] = c[0];
2534                         resolution[1] = c[1];
2535                         resolution[2] = c[2];
2536                 }
2537                 else
2538                 {
2539                         for (resolution[0] = 4;resolution[0] < c[0];resolution[0]*=2) ;
2540                         for (resolution[1] = 4;resolution[1] < c[1];resolution[1]*=2) ;
2541                         for (resolution[2] = 4;resolution[2] < c[2];resolution[2]*=2) ;
2542                 }
2543                 size[0] = spacing[0] * resolution[0];
2544                 size[1] = spacing[1] * resolution[1];
2545                 size[2] = spacing[2] * resolution[2];
2546                 // center the rendering on the view
2547                 mins[0] = floor(r_refdef.view.origin[0] * ispacing[0] + 0.5f) * spacing[0] - 0.5f * size[0];
2548                 mins[1] = floor(r_refdef.view.origin[1] * ispacing[1] + 0.5f) * spacing[1] - 0.5f * size[1];
2549                 mins[2] = floor(r_refdef.view.origin[2] * ispacing[2] + 0.5f) * spacing[2] - 0.5f * size[2];
2550         }
2551
2552         // recalculate the maxs in case the resolution was not satisfactory
2553         VectorAdd(mins, size, maxs);
2554
2555         // if all the settings seem identical to the previous update, return
2556         if (r_shadow_bouncegridtexture && (settings.staticmode || realtime < r_shadow_bouncegridtime + r_shadow_bouncegrid_updateinterval.value) && !memcmp(&r_shadow_bouncegridsettings, &settings, sizeof(settings)))
2557                 return;
2558
2559         // store the new settings
2560         r_shadow_bouncegridsettings = settings;
2561
2562         pixelbands = settings.directionalshading ? 8 : 1;
2563         pixelsperband = resolution[0]*resolution[1]*resolution[2];
2564         numpixels = pixelsperband*pixelbands;
2565
2566         // we're going to update the bouncegrid, update the matrix...
2567         memset(m, 0, sizeof(m));
2568         m[0] = 1.0f / size[0];
2569         m[3] = -mins[0] * m[0];
2570         m[5] = 1.0f / size[1];
2571         m[7] = -mins[1] * m[5];
2572         m[10] = 1.0f / size[2];
2573         m[11] = -mins[2] * m[10];
2574         m[15] = 1.0f;
2575         Matrix4x4_FromArrayFloatD3D(&r_shadow_bouncegridmatrix, m);
2576         // reallocate pixels for this update if needed...
2577         if (r_shadow_bouncegridnumpixels != numpixels || !r_shadow_bouncegridpixels || !r_shadow_bouncegridhighpixels)
2578         {
2579                 if (r_shadow_bouncegridtexture)
2580                 {
2581                         R_FreeTexture(r_shadow_bouncegridtexture);
2582                         r_shadow_bouncegridtexture = NULL;
2583                 }
2584                 r_shadow_bouncegridpixels = (unsigned char *)Mem_Realloc(r_main_mempool, r_shadow_bouncegridpixels, numpixels * sizeof(unsigned char[4]));
2585                 r_shadow_bouncegridhighpixels = (float *)Mem_Realloc(r_main_mempool, r_shadow_bouncegridhighpixels, numpixels * sizeof(float[4]));
2586         }
2587         r_shadow_bouncegridnumpixels = numpixels;
2588         pixels = r_shadow_bouncegridpixels;
2589         highpixels = r_shadow_bouncegridhighpixels;
2590         x = pixelsperband*4;
2591         for (pixelband = 0;pixelband < pixelbands;pixelband++)
2592         {
2593                 if (pixelband == 1)
2594                         memset(pixels + pixelband * x, 128, x);
2595                 else
2596                         memset(pixels + pixelband * x, 0, x);
2597         }
2598         memset(highpixels, 0, numpixels * sizeof(float[4]));
2599         // figure out what we want to interact with
2600         if (settings.hitmodels)
2601                 hitsupercontentsmask = SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY;// | SUPERCONTENTS_LIQUIDSMASK;
2602         else
2603                 hitsupercontentsmask = SUPERCONTENTS_SOLID;// | SUPERCONTENTS_LIQUIDSMASK;
2604         maxbounce = settings.maxbounce;
2605         // clear variables that produce warnings otherwise
2606         memset(splatcolor, 0, sizeof(splatcolor));
2607         // iterate world rtlights
2608         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
2609         range1 = settings.staticmode ? 0 : r_refdef.scene.numlights;
2610         range2 = range + range1;
2611         photoncount = 0;
2612         for (lightindex = 0;lightindex < range2;lightindex++)
2613         {
2614                 if (lightindex < range)
2615                 {
2616                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
2617                         if (!light)
2618                                 continue;
2619                         rtlight = &light->rtlight;
2620                         VectorClear(rtlight->photoncolor);
2621                         rtlight->photons = 0;
2622                         if (!(light->flags & flag))
2623                                 continue;
2624                         if (settings.staticmode)
2625                         {
2626                                 // when static, we skip styled lights because they tend to change...
2627                                 if (rtlight->style > 0 && r_shadow_bouncegrid.integer != 2)
2628                                         continue;
2629                         }
2630                 }
2631                 else
2632                 {
2633                         rtlight = r_refdef.scene.lights[lightindex - range];
2634                         VectorClear(rtlight->photoncolor);
2635                         rtlight->photons = 0;
2636                 }
2637                 // draw only visible lights (major speedup)
2638                 radius = rtlight->radius * settings.lightradiusscale;
2639                 cullmins[0] = rtlight->shadoworigin[0] - radius;
2640                 cullmins[1] = rtlight->shadoworigin[1] - radius;
2641                 cullmins[2] = rtlight->shadoworigin[2] - radius;
2642                 cullmaxs[0] = rtlight->shadoworigin[0] + radius;
2643                 cullmaxs[1] = rtlight->shadoworigin[1] + radius;
2644                 cullmaxs[2] = rtlight->shadoworigin[2] + radius;
2645                 if (R_CullBox(cullmins, cullmaxs))
2646                         continue;
2647                 if (r_refdef.scene.worldmodel
2648                  && r_refdef.scene.worldmodel->brush.BoxTouchingVisibleLeafs
2649                  && !r_refdef.scene.worldmodel->brush.BoxTouchingVisibleLeafs(r_refdef.scene.worldmodel, r_refdef.viewcache.world_leafvisible, cullmins, cullmaxs))
2650                         continue;
2651                 w = r_shadow_lightintensityscale.value * (rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale);
2652                 if (w * VectorLength2(rtlight->color) == 0.0f)
2653                         continue;
2654                 w *= (rtlight->style >= 0 ? r_refdef.scene.rtlightstylevalue[rtlight->style] : 1);
2655                 VectorScale(rtlight->color, w, rtlight->photoncolor);
2656                 //if (!VectorLength2(rtlight->photoncolor))
2657                 //      continue;
2658                 // shoot particles from this light
2659                 // use a calculation for the number of particles that will not
2660                 // vary with lightstyle, otherwise we get randomized particle
2661                 // distribution, the seeded random is only consistent for a
2662                 // consistent number of particles on this light...
2663                 s = rtlight->radius;
2664                 lightintensity = VectorLength(rtlight->color) * (rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale);
2665                 if (lightindex >= range)
2666                         lightintensity *= settings.dlightparticlemultiplier;
2667                 rtlight->photons = max(0.0f, lightintensity * s * s);
2668                 photoncount += rtlight->photons;
2669         }
2670         photonscaling = (float)settings.photons / max(1, photoncount);
2671         photonresidual = 0.0f;
2672         for (lightindex = 0;lightindex < range2;lightindex++)
2673         {
2674                 if (lightindex < range)
2675                 {
2676                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
2677                         if (!light)
2678                                 continue;
2679                         rtlight = &light->rtlight;
2680                 }
2681                 else
2682                         rtlight = r_refdef.scene.lights[lightindex - range];
2683                 // skip a light with no photons
2684                 if (rtlight->photons == 0.0f)
2685                         continue;
2686                 // skip a light with no photon color)
2687                 if (VectorLength2(rtlight->photoncolor) == 0.0f)
2688                         continue;
2689                 photonresidual += rtlight->photons * photonscaling;
2690                 shootparticles = (int)bound(0, photonresidual, MAXBOUNCEGRIDPARTICLESPERLIGHT);
2691                 if (!shootparticles)
2692                         continue;
2693                 photonresidual -= shootparticles;
2694                 radius = rtlight->radius * settings.lightradiusscale;
2695                 s = settings.particleintensity / shootparticles;
2696                 VectorScale(rtlight->photoncolor, s, baseshotcolor);
2697                 r_refdef.stats[r_stat_bouncegrid_lights]++;
2698                 r_refdef.stats[r_stat_bouncegrid_particles] += shootparticles;
2699                 for (shotparticles = 0;shotparticles < shootparticles;shotparticles++)
2700                 {
2701                         if (settings.stablerandom > 0)
2702                                 seed = lightindex * 11937 + shotparticles;
2703                         VectorCopy(baseshotcolor, shotcolor);
2704                         VectorCopy(rtlight->shadoworigin, clipstart);
2705                         if (settings.stablerandom < 0)
2706                                 VectorRandom(clipend);
2707                         else
2708                                 VectorCheeseRandom(clipend);
2709                         VectorMA(clipstart, radius, clipend, clipend);
2710                         for (bouncecount = 0;;bouncecount++)
2711                         {
2712                                 r_refdef.stats[r_stat_bouncegrid_traces]++;
2713                                 //r_refdef.scene.worldmodel->TraceLineAgainstSurfaces(r_refdef.scene.worldmodel, NULL, NULL, &cliptrace, clipstart, clipend, hitsupercontentsmask);
2714                                 //r_refdef.scene.worldmodel->TraceLine(r_refdef.scene.worldmodel, NULL, NULL, &cliptrace2, clipstart, clipend, hitsupercontentsmask);
2715                                 if (settings.staticmode)
2716                                 {
2717                                         // static mode fires a LOT of rays but none of them are identical, so they are not cached
2718                                         cliptrace = CL_TraceLine(clipstart, clipend, settings.staticmode ? MOVE_WORLDONLY : (settings.hitmodels ? MOVE_HITMODEL : MOVE_NOMONSTERS), NULL, hitsupercontentsmask, true, false, NULL, true, true);
2719                                 }
2720                                 else
2721                                 {
2722                                         // dynamic mode fires many rays and most will match the cache from the previous frame
2723                                         cliptrace = CL_Cache_TraceLineSurfaces(clipstart, clipend, settings.staticmode ? MOVE_WORLDONLY : (settings.hitmodels ? MOVE_HITMODEL : MOVE_NOMONSTERS), hitsupercontentsmask);
2724                                 }
2725                                 if (bouncecount > 0 || settings.includedirectlighting)
2726                                 {
2727                                         // calculate second order spherical harmonics values (average, slopeX, slopeY, slopeZ)
2728                                         // accumulate average shotcolor
2729                                         w = VectorLength(shotcolor);
2730                                         splatcolor[ 0] = shotcolor[0];
2731                                         splatcolor[ 1] = shotcolor[1];
2732                                         splatcolor[ 2] = shotcolor[2];
2733                                         splatcolor[ 3] = 0.0f;
2734                                         if (pixelbands > 1)
2735                                         {
2736                                                 VectorSubtract(clipstart, cliptrace.endpos, clipdiff);
2737                                                 VectorNormalize(clipdiff);
2738                                                 // store bentnormal in case the shader has a use for it
2739                                                 splatcolor[ 4] = clipdiff[0] * w;
2740                                                 splatcolor[ 5] = clipdiff[1] * w;
2741                                                 splatcolor[ 6] = clipdiff[2] * w;
2742                                                 splatcolor[ 7] = w;
2743                                                 // accumulate directional contributions (+X, +Y, +Z, -X, -Y, -Z)
2744                                                 splatcolor[ 8] = shotcolor[0] * max(0.0f, clipdiff[0]);
2745                                                 splatcolor[ 9] = shotcolor[0] * max(0.0f, clipdiff[1]);
2746                                                 splatcolor[10] = shotcolor[0] * max(0.0f, clipdiff[2]);
2747                                                 splatcolor[11] = 0.0f;
2748                                                 splatcolor[12] = shotcolor[1] * max(0.0f, clipdiff[0]);
2749                                                 splatcolor[13] = shotcolor[1] * max(0.0f, clipdiff[1]);
2750                                                 splatcolor[14] = shotcolor[1] * max(0.0f, clipdiff[2]);
2751                                                 splatcolor[15] = 0.0f;
2752                                                 splatcolor[16] = shotcolor[2] * max(0.0f, clipdiff[0]);
2753                                                 splatcolor[17] = shotcolor[2] * max(0.0f, clipdiff[1]);
2754                                                 splatcolor[18] = shotcolor[2] * max(0.0f, clipdiff[2]);
2755                                                 splatcolor[19] = 0.0f;
2756                                                 splatcolor[20] = shotcolor[0] * max(0.0f, -clipdiff[0]);
2757                                                 splatcolor[21] = shotcolor[0] * max(0.0f, -clipdiff[1]);
2758                                                 splatcolor[22] = shotcolor[0] * max(0.0f, -clipdiff[2]);
2759                                                 splatcolor[23] = 0.0f;
2760                                                 splatcolor[24] = shotcolor[1] * max(0.0f, -clipdiff[0]);
2761                                                 splatcolor[25] = shotcolor[1] * max(0.0f, -clipdiff[1]);
2762                                                 splatcolor[26] = shotcolor[1] * max(0.0f, -clipdiff[2]);
2763                                                 splatcolor[27] = 0.0f;
2764                                                 splatcolor[28] = shotcolor[2] * max(0.0f, -clipdiff[0]);
2765                                                 splatcolor[29] = shotcolor[2] * max(0.0f, -clipdiff[1]);
2766                                                 splatcolor[30] = shotcolor[2] * max(0.0f, -clipdiff[2]);
2767                                                 splatcolor[31] = 0.0f;
2768                                         }
2769                                         // calculate the number of steps we need to traverse this distance
2770                                         VectorSubtract(cliptrace.endpos, clipstart, stepdelta);
2771                                         numsteps = (int)(VectorLength(stepdelta) * ispacing[0]);
2772                                         numsteps = bound(1, numsteps, 1024);
2773                                         w = 1.0f / numsteps;
2774                                         VectorScale(stepdelta, w, stepdelta);
2775                                         VectorMA(clipstart, 0.5f, stepdelta, steppos);
2776                                         for (step = 0;step < numsteps;step++)
2777                                         {
2778                                                 r_refdef.stats[r_stat_bouncegrid_splats]++;
2779                                                 // figure out which texture pixel this is in
2780                                                 texlerp[1][0] = ((steppos[0] - mins[0]) * ispacing[0]) - 0.5f;
2781                                                 texlerp[1][1] = ((steppos[1] - mins[1]) * ispacing[1]) - 0.5f;
2782                                                 texlerp[1][2] = ((steppos[2] - mins[2]) * ispacing[2]) - 0.5f;
2783                                                 tex[0] = (int)floor(texlerp[1][0]);
2784                                                 tex[1] = (int)floor(texlerp[1][1]);
2785                                                 tex[2] = (int)floor(texlerp[1][2]);
2786                                                 if (tex[0] >= 1 && tex[1] >= 1 && tex[2] >= 1 && tex[0] < resolution[0] - 2 && tex[1] < resolution[1] - 2 && tex[2] < resolution[2] - 2)
2787                                                 {
2788                                                         // it is within bounds...  do the real work now
2789                                                         // calculate the lerp factors
2790                                                         texlerp[1][0] -= tex[0];
2791                                                         texlerp[1][1] -= tex[1];
2792                                                         texlerp[1][2] -= tex[2];
2793                                                         texlerp[0][0] = 1.0f - texlerp[1][0];
2794                                                         texlerp[0][1] = 1.0f - texlerp[1][1];
2795                                                         texlerp[0][2] = 1.0f - texlerp[1][2];
2796                                                         // calculate individual pixel indexes and weights
2797                                                         pixelindex[0] = (((tex[2]  )*resolution[1]+tex[1]  )*resolution[0]+tex[0]  );pixelweight[0] = (texlerp[0][0]*texlerp[0][1]*texlerp[0][2]);
2798                                                         pixelindex[1] = (((tex[2]  )*resolution[1]+tex[1]  )*resolution[0]+tex[0]+1);pixelweight[1] = (texlerp[1][0]*texlerp[0][1]*texlerp[0][2]);
2799                                                         pixelindex[2] = (((tex[2]  )*resolution[1]+tex[1]+1)*resolution[0]+tex[0]  );pixelweight[2] = (texlerp[0][0]*texlerp[1][1]*texlerp[0][2]);
2800                                                         pixelindex[3] = (((tex[2]  )*resolution[1]+tex[1]+1)*resolution[0]+tex[0]+1);pixelweight[3] = (texlerp[1][0]*texlerp[1][1]*texlerp[0][2]);
2801                                                         pixelindex[4] = (((tex[2]+1)*resolution[1]+tex[1]  )*resolution[0]+tex[0]  );pixelweight[4] = (texlerp[0][0]*texlerp[0][1]*texlerp[1][2]);
2802                                                         pixelindex[5] = (((tex[2]+1)*resolution[1]+tex[1]  )*resolution[0]+tex[0]+1);pixelweight[5] = (texlerp[1][0]*texlerp[0][1]*texlerp[1][2]);
2803                                                         pixelindex[6] = (((tex[2]+1)*resolution[1]+tex[1]+1)*resolution[0]+tex[0]  );pixelweight[6] = (texlerp[0][0]*texlerp[1][1]*texlerp[1][2]);
2804                                                         pixelindex[7] = (((tex[2]+1)*resolution[1]+tex[1]+1)*resolution[0]+tex[0]+1);pixelweight[7] = (texlerp[1][0]*texlerp[1][1]*texlerp[1][2]);
2805                                                         // update the 8 pixels...
2806                                                         for (pixelband = 0;pixelband < pixelbands;pixelband++)
2807                                                         {
2808                                                                 for (corner = 0;corner < 8;corner++)
2809                                                                 {
2810                                                                         // calculate address for pixel
2811                                                                         w = pixelweight[corner];
2812                                                                         pixel = pixels + 4 * pixelindex[corner] + pixelband * pixelsperband * 4;
2813                                                                         highpixel = highpixels + 4 * pixelindex[corner] + pixelband * pixelsperband * 4;
2814                                                                         // add to the high precision pixel color
2815                                                                         highpixel[0] += (splatcolor[pixelband*4+0]*w);
2816                                                                         highpixel[1] += (splatcolor[pixelband*4+1]*w);
2817                                                                         highpixel[2] += (splatcolor[pixelband*4+2]*w);
2818                                                                         highpixel[3] += (splatcolor[pixelband*4+3]*w);
2819                                                                         // flag the low precision pixel as needing to be updated
2820                                                                         pixel[3] = 255;
2821                                                                         // advance to next band of coefficients
2822                                                                         //pixel += pixelsperband*4;
2823                                                                         //highpixel += pixelsperband*4;
2824                                                                 }
2825                                                         }
2826                                                 }
2827                                                 VectorAdd(steppos, stepdelta, steppos);
2828                                         }
2829                                 }
2830                                 if (cliptrace.fraction >= 1.0f)
2831                                         break;
2832                                 r_refdef.stats[r_stat_bouncegrid_hits]++;
2833                                 if (bouncecount >= maxbounce)
2834                                         break;
2835                                 // scale down shot color by bounce intensity and texture color (or 50% if no texture reported)
2836                                 // also clamp the resulting color to never add energy, even if the user requests extreme values
2837                                 if (cliptrace.hittexture && cliptrace.hittexture->currentskinframe)
2838                                         VectorCopy(cliptrace.hittexture->currentskinframe->avgcolor, surfcolor);
2839                                 else
2840                                         VectorSet(surfcolor, 0.5f, 0.5f, 0.5f);
2841                                 VectorScale(surfcolor, settings.particlebounceintensity, surfcolor);
2842                                 surfcolor[0] = min(surfcolor[0], 1.0f);
2843                                 surfcolor[1] = min(surfcolor[1], 1.0f);
2844                                 surfcolor[2] = min(surfcolor[2], 1.0f);
2845                                 VectorMultiply(shotcolor, surfcolor, shotcolor);
2846                                 if (VectorLength2(baseshotcolor) == 0.0f)
2847                                         break;
2848                                 r_refdef.stats[r_stat_bouncegrid_bounces]++;
2849                                 if (settings.bounceanglediffuse)
2850                                 {
2851                                         // random direction, primarily along plane normal
2852                                         s = VectorDistance(cliptrace.endpos, clipend);
2853                                         if (settings.stablerandom < 0)
2854                                                 VectorRandom(clipend);
2855                                         else
2856                                                 VectorCheeseRandom(clipend);
2857                                         VectorMA(cliptrace.plane.normal, 0.95f, clipend, clipend);
2858                                         VectorNormalize(clipend);
2859                                         VectorScale(clipend, s, clipend);
2860                                 }
2861                                 else
2862                                 {
2863                                         // reflect the remaining portion of the line across plane normal
2864                                         VectorSubtract(clipend, cliptrace.endpos, clipdiff);
2865                                         VectorReflect(clipdiff, 1.0, cliptrace.plane.normal, clipend);
2866                                 }
2867                                 // calculate the new line start and end
2868                                 VectorCopy(cliptrace.endpos, clipstart);
2869                                 VectorAdd(clipstart, clipend, clipend);
2870                         }
2871                 }
2872         }
2873         // generate pixels array from highpixels array
2874         // skip first and last columns, rows, and layers as these are blank
2875         // the pixel[3] value was written above, so we can use it to detect only pixels that need to be calculated
2876         for (pixelband = 0;pixelband < pixelbands;pixelband++)
2877         {
2878                 for (z = 1;z < resolution[2]-1;z++)
2879                 {
2880                         for (y = 1;y < resolution[1]-1;y++)
2881                         {
2882                                 for (x = 1, pixelindex[0] = ((pixelband*resolution[2]+z)*resolution[1]+y)*resolution[0]+x, pixel = pixels + 4*pixelindex[0], highpixel = highpixels + 4*pixelindex[0];x < resolution[0]-1;x++, pixel += 4, highpixel += 4)
2883                                 {
2884                                         // only convert pixels that were hit by photons
2885                                         if (pixel[3] == 255)
2886                                         {
2887                                                 // normalize the bentnormal...
2888                                                 if (pixelband == 1)
2889                                                 {
2890                                                         VectorNormalize(highpixel);
2891                                                         c[0] = (int)(highpixel[0]*128.0f+128.0f);
2892                                                         c[1] = (int)(highpixel[1]*128.0f+128.0f);
2893                                                         c[2] = (int)(highpixel[2]*128.0f+128.0f);
2894                                                         c[3] = (int)(highpixel[3]*128.0f+128.0f);
2895                                                 }
2896                                                 else
2897                                                 {
2898                                                         c[0] = (int)(highpixel[0]*256.0f);
2899                                                         c[1] = (int)(highpixel[1]*256.0f);
2900                                                         c[2] = (int)(highpixel[2]*256.0f);
2901                                                         c[3] = (int)(highpixel[3]*256.0f);
2902                                                 }
2903                                                 pixel[2] = (unsigned char)bound(0, c[0], 255);
2904                                                 pixel[1] = (unsigned char)bound(0, c[1], 255);
2905                                                 pixel[0] = (unsigned char)bound(0, c[2], 255);
2906                                                 pixel[3] = (unsigned char)bound(0, c[3], 255);
2907                                         }
2908                                 }
2909                         }
2910                 }
2911         }
2912         if (r_shadow_bouncegridtexture && r_shadow_bouncegridresolution[0] == resolution[0] && r_shadow_bouncegridresolution[1] == resolution[1] && r_shadow_bouncegridresolution[2] == resolution[2] && r_shadow_bouncegriddirectional == settings.directionalshading)
2913                 R_UpdateTexture(r_shadow_bouncegridtexture, pixels, 0, 0, 0, resolution[0], resolution[1], resolution[2]*pixelbands);
2914         else
2915         {
2916                 VectorCopy(resolution, r_shadow_bouncegridresolution);
2917                 r_shadow_bouncegriddirectional = settings.directionalshading;
2918                 if (r_shadow_bouncegridtexture)
2919                         R_FreeTexture(r_shadow_bouncegridtexture);
2920                 r_shadow_bouncegridtexture = R_LoadTexture3D(r_shadow_texturepool, "bouncegrid", resolution[0], resolution[1], resolution[2]*pixelbands, pixels, TEXTYPE_BGRA, TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCELINEAR, 0, NULL);
2921         }
2922         r_shadow_bouncegridtime = realtime;
2923 }
2924
2925 void R_Shadow_RenderMode_VisibleShadowVolumes(void)
2926 {
2927         R_Shadow_RenderMode_Reset();
2928         GL_BlendFunc(GL_ONE, GL_ONE);
2929         GL_DepthRange(0, 1);
2930         GL_DepthTest(r_showshadowvolumes.integer < 2);
2931         GL_Color(0.0, 0.0125 * r_refdef.view.colorscale, 0.1 * r_refdef.view.colorscale, 1);
2932         GL_PolygonOffset(r_refdef.shadowpolygonfactor, r_refdef.shadowpolygonoffset);CHECKGLERROR
2933         GL_CullFace(GL_NONE);
2934         r_shadow_rendermode = R_SHADOW_RENDERMODE_VISIBLEVOLUMES;
2935 }
2936
2937 void R_Shadow_RenderMode_VisibleLighting(qboolean stenciltest, qboolean transparent)
2938 {
2939         R_Shadow_RenderMode_Reset();
2940         GL_BlendFunc(GL_ONE, GL_ONE);
2941         GL_DepthRange(0, 1);
2942         GL_DepthTest(r_showlighting.integer < 2);
2943         GL_Color(0.1 * r_refdef.view.colorscale, 0.0125 * r_refdef.view.colorscale, 0, 1);
2944         if (!transparent)
2945                 GL_DepthFunc(GL_EQUAL);
2946         R_SetStencil(stenciltest, 255, GL_KEEP, GL_KEEP, GL_KEEP, GL_EQUAL, 128, 255);
2947         r_shadow_rendermode = R_SHADOW_RENDERMODE_VISIBLELIGHTING;
2948 }
2949
2950 void R_Shadow_RenderMode_End(void)
2951 {
2952         R_Shadow_RenderMode_Reset();
2953         R_Shadow_RenderMode_ActiveLight(NULL);
2954         GL_DepthMask(true);
2955         GL_Scissor(r_refdef.view.viewport.x, r_refdef.view.viewport.y, r_refdef.view.viewport.width, r_refdef.view.viewport.height);
2956         r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
2957 }
2958
2959 int bboxedges[12][2] =
2960 {
2961         // top
2962         {0, 1}, // +X
2963         {0, 2}, // +Y
2964         {1, 3}, // Y, +X
2965         {2, 3}, // X, +Y
2966         // bottom
2967         {4, 5}, // +X
2968         {4, 6}, // +Y
2969         {5, 7}, // Y, +X
2970         {6, 7}, // X, +Y
2971         // verticals
2972         {0, 4}, // +Z
2973         {1, 5}, // X, +Z
2974         {2, 6}, // Y, +Z
2975         {3, 7}, // XY, +Z
2976 };
2977
2978 qboolean R_Shadow_ScissorForBBox(const float *mins, const float *maxs)
2979 {
2980         if (!r_shadow_scissor.integer || r_shadow_usingdeferredprepass || r_trippy.integer)
2981         {
2982                 r_shadow_lightscissor[0] = r_refdef.view.viewport.x;
2983                 r_shadow_lightscissor[1] = r_refdef.view.viewport.y;
2984                 r_shadow_lightscissor[2] = r_refdef.view.viewport.width;
2985                 r_shadow_lightscissor[3] = r_refdef.view.viewport.height;
2986                 return false;
2987         }
2988         if(R_ScissorForBBox(mins, maxs, r_shadow_lightscissor))
2989                 return true; // invisible
2990         if(r_shadow_lightscissor[0] != r_refdef.view.viewport.x
2991         || r_shadow_lightscissor[1] != r_refdef.view.viewport.y
2992         || r_shadow_lightscissor[2] != r_refdef.view.viewport.width
2993         || r_shadow_lightscissor[3] != r_refdef.view.viewport.height)
2994                 r_refdef.stats[r_stat_lights_scissored]++;
2995         return false;
2996 }
2997
2998 static void R_Shadow_RenderLighting_Light_Vertex_Shading(int firstvertex, int numverts, const float *diffusecolor, const float *ambientcolor)
2999 {
3000         int i;
3001         const float *vertex3f;
3002         const float *normal3f;
3003         float *color4f;
3004         float dist, dot, distintensity, shadeintensity, v[3], n[3];
3005         switch (r_shadow_rendermode)
3006         {
3007         case R_SHADOW_RENDERMODE_LIGHT_VERTEX3DATTEN:
3008         case R_SHADOW_RENDERMODE_LIGHT_VERTEX2D1DATTEN:
3009                 if (VectorLength2(diffusecolor) > 0)
3010                 {
3011                         for (i = 0, vertex3f = rsurface.batchvertex3f + 3*firstvertex, normal3f = rsurface.batchnormal3f + 3*firstvertex, color4f = rsurface.passcolor4f + 4 * firstvertex;i < numverts;i++, vertex3f += 3, normal3f += 3, color4f += 4)
3012                         {
3013                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
3014                                 Matrix4x4_Transform3x3(&rsurface.entitytolight, normal3f, n);
3015                                 if ((dot = DotProduct(n, v)) < 0)
3016                                 {
3017                                         shadeintensity = -dot / sqrt(VectorLength2(v) * VectorLength2(n));
3018                                         VectorMA(ambientcolor, shadeintensity, diffusecolor, color4f);
3019                                 }
3020                                 else
3021                                         VectorCopy(ambientcolor, color4f);
3022                                 if (r_refdef.fogenabled)
3023                                 {
3024                                         float f;
3025                                         f = RSurf_FogVertex(vertex3f);
3026                                         VectorScale(color4f, f, color4f);
3027                                 }
3028                                 color4f[3] = 1;
3029                         }
3030                 }
3031                 else
3032                 {
3033                         for (i = 0, vertex3f = rsurface.batchvertex3f + 3*firstvertex, color4f = rsurface.passcolor4f + 4 * firstvertex;i < numverts;i++, vertex3f += 3, color4f += 4)
3034                         {
3035                                 VectorCopy(ambientcolor, color4f);
3036                                 if (r_refdef.fogenabled)
3037                                 {
3038                                         float f;
3039                                         Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
3040                                         f = RSurf_FogVertex(vertex3f);
3041                                         VectorScale(color4f + 4*i, f, color4f);
3042                                 }
3043                                 color4f[3] = 1;
3044                         }
3045                 }
3046                 break;
3047         case R_SHADOW_RENDERMODE_LIGHT_VERTEX2DATTEN:
3048                 if (VectorLength2(diffusecolor) > 0)
3049                 {
3050                         for (i = 0, vertex3f = rsurface.batchvertex3f + 3*firstvertex, normal3f = rsurface.batchnormal3f + 3*firstvertex, color4f = rsurface.passcolor4f + 4 * firstvertex;i < numverts;i++, vertex3f += 3, normal3f += 3, color4f += 4)
3051                         {
3052                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
3053                                 if ((dist = fabs(v[2])) < 1 && (distintensity = r_shadow_attentable[(int)(dist * ATTENTABLESIZE)]))
3054                                 {
3055                                         Matrix4x4_Transform3x3(&rsurface.entitytolight, normal3f, n);
3056                                         if ((dot = DotProduct(n, v)) < 0)
3057                                         {
3058                                                 shadeintensity = -dot / sqrt(VectorLength2(v) * VectorLength2(n));
3059                                                 color4f[0] = (ambientcolor[0] + shadeintensity * diffusecolor[0]) * distintensity;
3060                                                 color4f[1] = (ambientcolor[1] + shadeintensity * diffusecolor[1]) * distintensity;
3061                                                 color4f[2] = (ambientcolor[2] + shadeintensity * diffusecolor[2]) * distintensity;
3062                                         }
3063                                         else
3064                                         {
3065                                                 color4f[0] = ambientcolor[0] * distintensity;
3066                                                 color4f[1] = ambientcolor[1] * distintensity;
3067                                                 color4f[2] = ambientcolor[2] * distintensity;
3068                                         }
3069                                         if (r_refdef.fogenabled)
3070                                         {
3071                                                 float f;
3072                                                 f = RSurf_FogVertex(vertex3f);
3073                                                 VectorScale(color4f, f, color4f);
3074                                         }
3075                                 }
3076                                 else
3077                                         VectorClear(color4f);
3078                                 color4f[3] = 1;
3079                         }
3080                 }
3081                 else
3082                 {
3083                         for (i = 0, vertex3f = rsurface.batchvertex3f + 3*firstvertex, color4f = rsurface.passcolor4f + 4 * firstvertex;i < numverts;i++, vertex3f += 3, color4f += 4)
3084                         {
3085                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
3086                                 if ((dist = fabs(v[2])) < 1 && (distintensity = r_shadow_attentable[(int)(dist * ATTENTABLESIZE)]))
3087                                 {
3088                                         color4f[0] = ambientcolor[0] * distintensity;
3089                                         color4f[1] = ambientcolor[1] * distintensity;
3090                                         color4f[2] = ambientcolor[2] * distintensity;
3091                                         if (r_refdef.fogenabled)
3092                                         {
3093                                                 float f;
3094                                                 f = RSurf_FogVertex(vertex3f);
3095                                                 VectorScale(color4f, f, color4f);
3096                                         }
3097                                 }
3098                                 else
3099                                         VectorClear(color4f);
3100                                 color4f[3] = 1;
3101                         }
3102                 }
3103                 break;
3104         case R_SHADOW_RENDERMODE_LIGHT_VERTEX:
3105                 if (VectorLength2(diffusecolor) > 0)
3106                 {
3107                         for (i = 0, vertex3f = rsurface.batchvertex3f + 3*firstvertex, normal3f = rsurface.batchnormal3f + 3*firstvertex, color4f = rsurface.passcolor4f + 4 * firstvertex;i < numverts;i++, vertex3f += 3, normal3f += 3, color4f += 4)
3108                         {
3109                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
3110                                 if ((dist = VectorLength(v)) < 1 && (distintensity = r_shadow_attentable[(int)(dist * ATTENTABLESIZE)]))
3111                                 {
3112                                         distintensity = (1 - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist);
3113                                         Matrix4x4_Transform3x3(&rsurface.entitytolight, normal3f, n);
3114                                         if ((dot = DotProduct(n, v)) < 0)
3115                                         {
3116                                                 shadeintensity = -dot / sqrt(VectorLength2(v) * VectorLength2(n));
3117                                                 color4f[0] = (ambientcolor[0] + shadeintensity * diffusecolor[0]) * distintensity;
3118                                                 color4f[1] = (ambientcolor[1] + shadeintensity * diffusecolor[1]) * distintensity;
3119                                                 color4f[2] = (ambientcolor[2] + shadeintensity * diffusecolor[2]) * distintensity;
3120                                         }
3121                                         else
3122                                         {
3123                                                 color4f[0] = ambientcolor[0] * distintensity;
3124                                                 color4f[1] = ambientcolor[1] * distintensity;
3125                                                 color4f[2] = ambientcolor[2] * distintensity;
3126                                         }
3127                                         if (r_refdef.fogenabled)
3128                                         {
3129                                                 float f;
3130                                                 f = RSurf_FogVertex(vertex3f);
3131                                                 VectorScale(color4f, f, color4f);
3132                                         }
3133                                 }
3134                                 else
3135                                         VectorClear(color4f);
3136                                 color4f[3] = 1;
3137                         }
3138                 }
3139                 else
3140                 {
3141                         for (i = 0, vertex3f = rsurface.batchvertex3f + 3*firstvertex, color4f = rsurface.passcolor4f + 4 * firstvertex;i < numverts;i++, vertex3f += 3, color4f += 4)
3142                         {
3143                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
3144                                 if ((dist = VectorLength(v)) < 1 && (distintensity = r_shadow_attentable[(int)(dist * ATTENTABLESIZE)]))
3145                                 {
3146                                         distintensity = (1 - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist);
3147                                         color4f[0] = ambientcolor[0] * distintensity;
3148                                         color4f[1] = ambientcolor[1] * distintensity;
3149                                         color4f[2] = ambientcolor[2] * distintensity;
3150                                         if (r_refdef.fogenabled)
3151                                         {
3152                                                 float f;
3153                                                 f = RSurf_FogVertex(vertex3f);
3154                                                 VectorScale(color4f, f, color4f);
3155                                         }
3156                                 }
3157                                 else
3158                                         VectorClear(color4f);
3159                                 color4f[3] = 1;
3160                         }
3161                 }
3162                 break;
3163         default:
3164                 break;
3165         }
3166 }
3167
3168 static void R_Shadow_RenderLighting_VisibleLighting(int texturenumsurfaces, const msurface_t **texturesurfacelist)
3169 {
3170         // used to display how many times a surface is lit for level design purposes
3171         RSurf_PrepareVerticesForBatch(BATCHNEED_ARRAY_VERTEX | BATCHNEED_NOGAPS, texturenumsurfaces, texturesurfacelist);
3172         R_Mesh_PrepareVertices_Generic_Arrays(rsurface.batchnumvertices, rsurface.batchvertex3f, NULL, NULL);
3173         RSurf_DrawBatch();
3174 }
3175
3176 static void R_Shadow_RenderLighting_Light_GLSL(int texturenumsurfaces, const msurface_t **texturesurfacelist, const vec3_t lightcolor, float ambientscale, float diffusescale, float specularscale)
3177 {
3178         // ARB2 GLSL shader path (GFFX5200, Radeon 9500)
3179         R_SetupShader_Surface(lightcolor, false, ambientscale, diffusescale, specularscale, RSURFPASS_RTLIGHT, texturenumsurfaces, texturesurfacelist, NULL, false);
3180         RSurf_DrawBatch();
3181 }
3182
3183 static void R_Shadow_RenderLighting_Light_Vertex_Pass(int firstvertex, int numvertices, int numtriangles, const int *element3i, vec3_t diffusecolor2, vec3_t ambientcolor2)
3184 {
3185         int renders;
3186         int i;
3187         int stop;
3188         int newfirstvertex;
3189         int newlastvertex;
3190         int newnumtriangles;
3191         int *newe;
3192         const int *e;
3193         float *c;
3194         int maxtriangles = 1024;
3195         int newelements[1024*3];
3196         R_Shadow_RenderLighting_Light_Vertex_Shading(firstvertex, numvertices, diffusecolor2, ambientcolor2);
3197         for (renders = 0;renders < 4;renders++)
3198         {
3199                 stop = true;
3200                 newfirstvertex = 0;
3201                 newlastvertex = 0;
3202                 newnumtriangles = 0;
3203                 newe = newelements;
3204                 // due to low fillrate on the cards this vertex lighting path is
3205                 // designed for, we manually cull all triangles that do not
3206                 // contain a lit vertex
3207                 // this builds batches of triangles from multiple surfaces and
3208                 // renders them at once
3209                 for (i = 0, e = element3i;i < numtriangles;i++, e += 3)
3210                 {
3211                         if (VectorLength2(rsurface.passcolor4f + e[0] * 4) + VectorLength2(rsurface.passcolor4f + e[1] * 4) + VectorLength2(rsurface.passcolor4f + e[2] * 4) >= 0.01)
3212                         {
3213                                 if (newnumtriangles)
3214                                 {
3215                                         newfirstvertex = min(newfirstvertex, e[0]);
3216                                         newlastvertex  = max(newlastvertex, e[0]);
3217                                 }
3218                                 else
3219                                 {
3220                                         newfirstvertex = e[0];
3221                                         newlastvertex = e[0];
3222                                 }
3223                                 newfirstvertex = min(newfirstvertex, e[1]);
3224                                 newlastvertex  = max(newlastvertex, e[1]);
3225                                 newfirstvertex = min(newfirstvertex, e[2]);
3226                                 newlastvertex  = max(newlastvertex, e[2]);
3227                                 newe[0] = e[0];
3228                                 newe[1] = e[1];
3229                                 newe[2] = e[2];
3230                                 newnumtriangles++;
3231                                 newe += 3;
3232                                 if (newnumtriangles >= maxtriangles)
3233                                 {
3234                                         R_Mesh_Draw(newfirstvertex, newlastvertex - newfirstvertex + 1, 0, newnumtriangles, newelements, NULL, 0, NULL, NULL, 0);
3235                                         newnumtriangles = 0;
3236                                         newe = newelements;
3237                                         stop = false;
3238                                 }
3239                         }
3240                 }
3241                 if (newnumtriangles >= 1)
3242                 {
3243                         R_Mesh_Draw(newfirstvertex, newlastvertex - newfirstvertex + 1, 0, newnumtriangles, newelements, NULL, 0, NULL, NULL, 0);
3244                         stop = false;
3245                 }
3246                 // if we couldn't find any lit triangles, exit early
3247                 if (stop)
3248                         break;
3249                 // now reduce the intensity for the next overbright pass
3250                 // we have to clamp to 0 here incase the drivers have improper
3251                 // handling of negative colors
3252                 // (some old drivers even have improper handling of >1 color)
3253                 stop = true;
3254                 for (i = 0, c = rsurface.passcolor4f + 4 * firstvertex;i < numvertices;i++, c += 4)
3255                 {
3256                         if (c[0] > 1 || c[1] > 1 || c[2] > 1)
3257                         {
3258                                 c[0] = max(0, c[0] - 1);
3259                                 c[1] = max(0, c[1] - 1);
3260                                 c[2] = max(0, c[2] - 1);
3261                                 stop = false;
3262                         }
3263                         else
3264                                 VectorClear(c);
3265                 }
3266                 // another check...
3267                 if (stop)
3268                         break;
3269         }
3270 }
3271
3272 static void R_Shadow_RenderLighting_Light_Vertex(int texturenumsurfaces, const msurface_t **texturesurfacelist, const vec3_t lightcolor, float ambientscale, float diffusescale)
3273 {
3274         // OpenGL 1.1 path (anything)
3275         float ambientcolorbase[3], diffusecolorbase[3];
3276         float ambientcolorpants[3], diffusecolorpants[3];
3277         float ambientcolorshirt[3], diffusecolorshirt[3];
3278         const float *surfacecolor = rsurface.texture->dlightcolor;
3279         const float *surfacepants = rsurface.colormap_pantscolor;
3280         const float *surfaceshirt = rsurface.colormap_shirtcolor;
3281         rtexture_t *basetexture = rsurface.texture->basetexture;
3282         rtexture_t *pantstexture = rsurface.texture->pantstexture;
3283         rtexture_t *shirttexture = rsurface.texture->shirttexture;
3284         qboolean dopants = pantstexture && VectorLength2(surfacepants) >= (1.0f / 1048576.0f);
3285         qboolean doshirt = shirttexture && VectorLength2(surfaceshirt) >= (1.0f / 1048576.0f);
3286         ambientscale *= 2 * r_refdef.view.colorscale;
3287         diffusescale *= 2 * r_refdef.view.colorscale;
3288         ambientcolorbase[0] = lightcolor[0] * ambientscale * surfacecolor[0];ambientcolorbase[1] = lightcolor[1] * ambientscale * surfacecolor[1];ambientcolorbase[2] = lightcolor[2] * ambientscale * surfacecolor[2];
3289         diffusecolorbase[0] = lightcolor[0] * diffusescale * surfacecolor[0];diffusecolorbase[1] = lightcolor[1] * diffusescale * surfacecolor[1];diffusecolorbase[2] = lightcolor[2] * diffusescale * surfacecolor[2];
3290         ambientcolorpants[0] = ambientcolorbase[0] * surfacepants[0];ambientcolorpants[1] = ambientcolorbase[1] * surfacepants[1];ambientcolorpants[2] = ambientcolorbase[2] * surfacepants[2];
3291         diffusecolorpants[0] = diffusecolorbase[0] * surfacepants[0];diffusecolorpants[1] = diffusecolorbase[1] * surfacepants[1];diffusecolorpants[2] = diffusecolorbase[2] * surfacepants[2];
3292         ambientcolorshirt[0] = ambientcolorbase[0] * surfaceshirt[0];ambientcolorshirt[1] = ambientcolorbase[1] * surfaceshirt[1];ambientcolorshirt[2] = ambientcolorbase[2] * surfaceshirt[2];
3293         diffusecolorshirt[0] = diffusecolorbase[0] * surfaceshirt[0];diffusecolorshirt[1] = diffusecolorbase[1] * surfaceshirt[1];diffusecolorshirt[2] = diffusecolorbase[2] * surfaceshirt[2];
3294         RSurf_PrepareVerticesForBatch(BATCHNEED_ARRAY_VERTEX | (diffusescale > 0 ? BATCHNEED_ARRAY_NORMAL : 0) | BATCHNEED_ARRAY_TEXCOORD | BATCHNEED_NOGAPS, texturenumsurfaces, texturesurfacelist);
3295         rsurface.passcolor4f = (float *)R_FrameData_Alloc((rsurface.batchfirstvertex + rsurface.batchnumvertices) * sizeof(float[4]));
3296         R_Mesh_VertexPointer(3, GL_FLOAT, sizeof(float[3]), rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
3297         R_Mesh_ColorPointer(4, GL_FLOAT, sizeof(float[4]), rsurface.passcolor4f, 0, 0);
3298         R_Mesh_TexCoordPointer(0, 2, GL_FLOAT, sizeof(float[2]), rsurface.batchtexcoordtexture2f, rsurface.batchtexcoordtexture2f_vertexbuffer, rsurface.batchtexcoordtexture2f_bufferoffset);
3299         R_Mesh_TexBind(0, basetexture);
3300         R_Mesh_TexMatrix(0, &rsurface.texture->currenttexmatrix);
3301         R_Mesh_TexCombine(0, GL_MODULATE, GL_MODULATE, 1, 1);
3302         switch(r_shadow_rendermode)
3303         {
3304         case R_SHADOW_RENDERMODE_LIGHT_VERTEX3DATTEN:
3305                 R_Mesh_TexBind(1, r_shadow_attenuation3dtexture);
3306                 R_Mesh_TexMatrix(1, &rsurface.entitytoattenuationxyz);
3307                 R_Mesh_TexCombine(1, GL_MODULATE, GL_MODULATE, 1, 1);
3308                 R_Mesh_TexCoordPointer(1, 3, GL_FLOAT, sizeof(float[3]), rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
3309                 break;
3310         case R_SHADOW_RENDERMODE_LIGHT_VERTEX2D1DATTEN:
3311                 R_Mesh_TexBind(2, r_shadow_attenuation2dtexture);
3312                 R_Mesh_TexMatrix(2, &rsurface.entitytoattenuationz);
3313                 R_Mesh_TexCombine(2, GL_MODULATE, GL_MODULATE, 1, 1);
3314                 R_Mesh_TexCoordPointer(2, 3, GL_FLOAT, sizeof(float[3]), rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
3315                 // fall through
3316         case R_SHADOW_RENDERMODE_LIGHT_VERTEX2DATTEN:
3317                 R_Mesh_TexBind(1, r_shadow_attenuation2dtexture);
3318                 R_Mesh_TexMatrix(1, &rsurface.entitytoattenuationxyz);
3319                 R_Mesh_TexCombine(1, GL_MODULATE, GL_MODULATE, 1, 1);
3320                 R_Mesh_TexCoordPointer(1, 3, GL_FLOAT, sizeof(float[3]), rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
3321                 break;
3322         case R_SHADOW_RENDERMODE_LIGHT_VERTEX:
3323                 break;
3324         default:
3325                 break;
3326         }
3327         //R_Mesh_TexBind(0, basetexture);
3328         R_Shadow_RenderLighting_Light_Vertex_Pass(rsurface.batchfirstvertex, rsurface.batchnumvertices, rsurface.batchnumtriangles, rsurface.batchelement3i + 3*rsurface.batchfirsttriangle, diffusecolorbase, ambientcolorbase);
3329         if (dopants)
3330         {
3331                 R_Mesh_TexBind(0, pantstexture);
3332                 R_Shadow_RenderLighting_Light_Vertex_Pass(rsurface.batchfirstvertex, rsurface.batchnumvertices, rsurface.batchnumtriangles, rsurface.batchelement3i + 3*rsurface.batchfirsttriangle, diffusecolorpants, ambientcolorpants);
3333         }
3334         if (doshirt)
3335         {
3336                 R_Mesh_TexBind(0, shirttexture);
3337                 R_Shadow_RenderLighting_Light_Vertex_Pass(rsurface.batchfirstvertex, rsurface.batchnumvertices, rsurface.batchnumtriangles, rsurface.batchelement3i + 3*rsurface.batchfirsttriangle, diffusecolorshirt, ambientcolorshirt);
3338         }
3339 }
3340
3341 extern cvar_t gl_lightmaps;
3342 void R_Shadow_RenderLighting(int texturenumsurfaces, const msurface_t **texturesurfacelist)
3343 {
3344         float ambientscale, diffusescale, specularscale;
3345         qboolean negated;
3346         float lightcolor[3];
3347         VectorCopy(rsurface.rtlight->currentcolor, lightcolor);
3348         ambientscale = rsurface.rtlight->ambientscale + rsurface.texture->rtlightambient;
3349         diffusescale = rsurface.rtlight->diffusescale * max(0, 1.0 - rsurface.texture->rtlightambient);
3350         specularscale = rsurface.rtlight->specularscale * rsurface.texture->specularscale;
3351         if (!r_shadow_usenormalmap.integer)
3352         {
3353                 ambientscale += 1.0f * diffusescale;
3354                 diffusescale = 0;
3355                 specularscale = 0;
3356         }
3357         if ((ambientscale + diffusescale) * VectorLength2(lightcolor) + specularscale * VectorLength2(lightcolor) < (1.0f / 1048576.0f))
3358                 return;
3359         negated = (lightcolor[0] + lightcolor[1] + lightcolor[2] < 0) && vid.support.ext_blend_subtract;
3360         if(negated)
3361         {
3362                 VectorNegate(lightcolor, lightcolor);
3363                 GL_BlendEquationSubtract(true);
3364         }
3365         RSurf_SetupDepthAndCulling();
3366         switch (r_shadow_rendermode)
3367         {
3368         case R_SHADOW_RENDERMODE_VISIBLELIGHTING:
3369                 GL_DepthTest(!(rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST) && !r_showdisabledepthtest.integer);
3370                 R_Shadow_RenderLighting_VisibleLighting(texturenumsurfaces, texturesurfacelist);
3371                 break;
3372         case R_SHADOW_RENDERMODE_LIGHT_GLSL:
3373                 R_Shadow_RenderLighting_Light_GLSL(texturenumsurfaces, texturesurfacelist, lightcolor, ambientscale, diffusescale, specularscale);
3374                 break;
3375         case R_SHADOW_RENDERMODE_LIGHT_VERTEX3DATTEN:
3376         case R_SHADOW_RENDERMODE_LIGHT_VERTEX2D1DATTEN:
3377         case R_SHADOW_RENDERMODE_LIGHT_VERTEX2DATTEN:
3378         case R_SHADOW_RENDERMODE_LIGHT_VERTEX:
3379                 R_Shadow_RenderLighting_Light_Vertex(texturenumsurfaces, texturesurfacelist, lightcolor, ambientscale, diffusescale);
3380                 break;
3381         default:
3382                 Con_Printf("R_Shadow_RenderLighting: unknown r_shadow_rendermode %i\n", r_shadow_rendermode);
3383                 break;
3384         }
3385         if(negated)
3386                 GL_BlendEquationSubtract(false);
3387 }
3388
3389 void R_RTLight_Update(rtlight_t *rtlight, int isstatic, matrix4x4_t *matrix, vec3_t color, int style, const char *cubemapname, int shadow, vec_t corona, vec_t coronasizescale, vec_t ambientscale, vec_t diffusescale, vec_t specularscale, int flags)
3390 {
3391         matrix4x4_t tempmatrix = *matrix;
3392         Matrix4x4_Scale(&tempmatrix, r_shadow_lightradiusscale.value, 1);
3393
3394         // if this light has been compiled before, free the associated data
3395         R_RTLight_Uncompile(rtlight);
3396
3397         // clear it completely to avoid any lingering data
3398         memset(rtlight, 0, sizeof(*rtlight));
3399
3400         // copy the properties
3401         rtlight->matrix_lighttoworld = tempmatrix;
3402         Matrix4x4_Invert_Simple(&rtlight->matrix_worldtolight, &tempmatrix);
3403         Matrix4x4_OriginFromMatrix(&tempmatrix, rtlight->shadoworigin);
3404         rtlight->radius = Matrix4x4_ScaleFromMatrix(&tempmatrix);
3405         VectorCopy(color, rtlight->color);
3406         rtlight->cubemapname[0] = 0;
3407         if (cubemapname && cubemapname[0])
3408                 strlcpy(rtlight->cubemapname, cubemapname, sizeof(rtlight->cubemapname));
3409         rtlight->shadow = shadow;
3410         rtlight->corona = corona;
3411         rtlight->style = style;
3412         rtlight->isstatic = isstatic;
3413         rtlight->coronasizescale = coronasizescale;
3414         rtlight->ambientscale = ambientscale;
3415         rtlight->diffusescale = diffusescale;
3416         rtlight->specularscale = specularscale;
3417         rtlight->flags = flags;
3418
3419         // compute derived data
3420         //rtlight->cullradius = rtlight->radius;
3421         //rtlight->cullradius2 = rtlight->radius * rtlight->radius;
3422         rtlight->cullmins[0] = rtlight->shadoworigin[0] - rtlight->radius;
3423         rtlight->cullmins[1] = rtlight->shadoworigin[1] - rtlight->radius;
3424         rtlight->cullmins[2] = rtlight->shadoworigin[2] - rtlight->radius;
3425         rtlight->cullmaxs[0] = rtlight->shadoworigin[0] + rtlight->radius;
3426         rtlight->cullmaxs[1] = rtlight->shadoworigin[1] + rtlight->radius;
3427         rtlight->cullmaxs[2] = rtlight->shadoworigin[2] + rtlight->radius;
3428 }
3429
3430 // compiles rtlight geometry
3431 // (undone by R_FreeCompiledRTLight, which R_UpdateLight calls)
3432 void R_RTLight_Compile(rtlight_t *rtlight)
3433 {
3434         int i;
3435         int numsurfaces, numleafs, numleafpvsbytes, numshadowtrispvsbytes, numlighttrispvsbytes;
3436         int lighttris, shadowtris, shadowzpasstris, shadowzfailtris;
3437         entity_render_t *ent = r_refdef.scene.worldentity;
3438         dp_model_t *model = r_refdef.scene.worldmodel;
3439         unsigned char *data;
3440         shadowmesh_t *mesh;
3441
3442         // compile the light
3443         rtlight->compiled = true;
3444         rtlight->shadowmode = rtlight->shadow ? (int)r_shadow_shadowmode : -1;
3445         rtlight->static_numleafs = 0;
3446         rtlight->static_numleafpvsbytes = 0;
3447         rtlight->static_leaflist = NULL;
3448         rtlight->static_leafpvs = NULL;
3449         rtlight->static_numsurfaces = 0;
3450         rtlight->static_surfacelist = NULL;
3451         rtlight->static_shadowmap_receivers = 0x3F;
3452         rtlight->static_shadowmap_casters = 0x3F;
3453         rtlight->cullmins[0] = rtlight->shadoworigin[0] - rtlight->radius;
3454         rtlight->cullmins[1] = rtlight->shadoworigin[1] - rtlight->radius;
3455         rtlight->cullmins[2] = rtlight->shadoworigin[2] - rtlight->radius;
3456         rtlight->cullmaxs[0] = rtlight->shadoworigin[0] + rtlight->radius;
3457         rtlight->cullmaxs[1] = rtlight->shadoworigin[1] + rtlight->radius;
3458         rtlight->cullmaxs[2] = rtlight->shadoworigin[2] + rtlight->radius;
3459
3460         if (model && model->GetLightInfo)
3461         {
3462                 // this variable must be set for the CompileShadowVolume/CompileShadowMap code
3463                 r_shadow_compilingrtlight = rtlight;
3464                 R_FrameData_SetMark();
3465                 model->GetLightInfo(ent, rtlight->shadoworigin, rtlight->radius, rtlight->cullmins, rtlight->cullmaxs, r_shadow_buffer_leaflist, r_shadow_buffer_leafpvs, &numleafs, r_shadow_buffer_surfacelist, r_shadow_buffer_surfacepvs, &numsurfaces, r_shadow_buffer_shadowtrispvs, r_shadow_buffer_lighttrispvs, r_shadow_buffer_visitingleafpvs, 0, NULL);
3466                 R_FrameData_ReturnToMark();
3467                 numleafpvsbytes = (model->brush.num_leafs + 7) >> 3;
3468                 numshadowtrispvsbytes = ((model->brush.shadowmesh ? model->brush.shadowmesh->numtriangles : model->surfmesh.num_triangles) + 7) >> 3;
3469                 numlighttrispvsbytes = (model->surfmesh.num_triangles + 7) >> 3;
3470                 data = (unsigned char *)Mem_Alloc(r_main_mempool, sizeof(int) * numsurfaces + sizeof(int) * numleafs + numleafpvsbytes + numshadowtrispvsbytes + numlighttrispvsbytes);
3471                 rtlight->static_numsurfaces = numsurfaces;
3472                 rtlight->static_surfacelist = (int *)data;data += sizeof(int) * numsurfaces;
3473                 rtlight->static_numleafs = numleafs;
3474                 rtlight->static_leaflist = (int *)data;data += sizeof(int) * numleafs;
3475                 rtlight->static_numleafpvsbytes = numleafpvsbytes;
3476                 rtlight->static_leafpvs = (unsigned char *)data;data += numleafpvsbytes;
3477                 rtlight->static_numshadowtrispvsbytes = numshadowtrispvsbytes;
3478                 rtlight->static_shadowtrispvs = (unsigned char *)data;data += numshadowtrispvsbytes;
3479                 rtlight->static_numlighttrispvsbytes = numlighttrispvsbytes;
3480                 rtlight->static_lighttrispvs = (unsigned char *)data;data += numlighttrispvsbytes;
3481                 if (rtlight->static_numsurfaces)
3482                         memcpy(rtlight->static_surfacelist, r_shadow_buffer_surfacelist, rtlight->static_numsurfaces * sizeof(*rtlight->static_surfacelist));
3483                 if (rtlight->static_numleafs)
3484                         memcpy(rtlight->static_leaflist, r_shadow_buffer_leaflist, rtlight->static_numleafs * sizeof(*rtlight->static_leaflist));
3485                 if (rtlight->static_numleafpvsbytes)
3486                         memcpy(rtlight->static_leafpvs, r_shadow_buffer_leafpvs, rtlight->static_numleafpvsbytes);
3487                 if (rtlight->static_numshadowtrispvsbytes)
3488                         memcpy(rtlight->static_shadowtrispvs, r_shadow_buffer_shadowtrispvs, rtlight->static_numshadowtrispvsbytes);
3489                 if (rtlight->static_numlighttrispvsbytes)
3490                         memcpy(rtlight->static_lighttrispvs, r_shadow_buffer_lighttrispvs, rtlight->static_numlighttrispvsbytes);
3491                 R_FrameData_SetMark();
3492                 switch (rtlight->shadowmode)
3493                 {
3494                 case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
3495                         if (model->CompileShadowMap && rtlight->shadow)
3496                                 model->CompileShadowMap(ent, rtlight->shadoworigin, NULL, rtlight->radius, numsurfaces, r_shadow_buffer_surfacelist);
3497                         break;
3498                 default:
3499                         if (model->CompileShadowVolume && rtlight->shadow)
3500                                 model->CompileShadowVolume(ent, rtlight->shadoworigin, NULL, rtlight->radius, numsurfaces, r_shadow_buffer_surfacelist);
3501                         break;
3502                 }
3503                 R_FrameData_ReturnToMark();
3504                 // now we're done compiling the rtlight
3505                 r_shadow_compilingrtlight = NULL;
3506         }
3507
3508
3509         // use smallest available cullradius - box radius or light radius
3510         //rtlight->cullradius = RadiusFromBoundsAndOrigin(rtlight->cullmins, rtlight->cullmaxs, rtlight->shadoworigin);
3511         //rtlight->cullradius = min(rtlight->cullradius, rtlight->radius);
3512
3513         shadowzpasstris = 0;
3514         if (rtlight->static_meshchain_shadow_zpass)
3515                 for (mesh = rtlight->static_meshchain_shadow_zpass;mesh;mesh = mesh->next)
3516                         shadowzpasstris += mesh->numtriangles;
3517
3518         shadowzfailtris = 0;
3519         if (rtlight->static_meshchain_shadow_zfail)
3520                 for (mesh = rtlight->static_meshchain_shadow_zfail;mesh;mesh = mesh->next)
3521                         shadowzfailtris += mesh->numtriangles;
3522
3523         lighttris = 0;
3524         if (rtlight->static_numlighttrispvsbytes)
3525                 for (i = 0;i < rtlight->static_numlighttrispvsbytes*8;i++)
3526                         if (CHECKPVSBIT(rtlight->static_lighttrispvs, i))
3527                                 lighttris++;
3528
3529         shadowtris = 0;
3530         if (rtlight->static_numlighttrispvsbytes)
3531                 for (i = 0;i < rtlight->static_numshadowtrispvsbytes*8;i++)
3532                         if (CHECKPVSBIT(rtlight->static_shadowtrispvs, i))
3533                                 shadowtris++;
3534
3535         if (developer_extra.integer)
3536                 Con_DPrintf("static light built: %f %f %f : %f %f %f box, %i light triangles, %i shadow triangles, %i zpass/%i zfail compiled shadow volume triangles\n", rtlight->cullmins[0], rtlight->cullmins[1], rtlight->cullmins[2], rtlight->cullmaxs[0], rtlight->cullmaxs[1], rtlight->cullmaxs[2], lighttris, shadowtris, shadowzpasstris, shadowzfailtris);
3537 }
3538
3539 void R_RTLight_Uncompile(rtlight_t *rtlight)
3540 {
3541         if (rtlight->compiled)
3542         {
3543                 if (rtlight->static_meshchain_shadow_zpass)
3544                         Mod_ShadowMesh_Free(rtlight->static_meshchain_shadow_zpass);
3545                 rtlight->static_meshchain_shadow_zpass = NULL;
3546                 if (rtlight->static_meshchain_shadow_zfail)
3547                         Mod_ShadowMesh_Free(rtlight->static_meshchain_shadow_zfail);
3548                 rtlight->static_meshchain_shadow_zfail = NULL;
3549                 if (rtlight->static_meshchain_shadow_shadowmap)
3550                         Mod_ShadowMesh_Free(rtlight->static_meshchain_shadow_shadowmap);
3551                 rtlight->static_meshchain_shadow_shadowmap = NULL;
3552                 // these allocations are grouped
3553                 if (rtlight->static_surfacelist)
3554                         Mem_Free(rtlight->static_surfacelist);
3555                 rtlight->static_numleafs = 0;
3556                 rtlight->static_numleafpvsbytes = 0;
3557                 rtlight->static_leaflist = NULL;
3558                 rtlight->static_leafpvs = NULL;
3559                 rtlight->static_numsurfaces = 0;
3560                 rtlight->static_surfacelist = NULL;
3561                 rtlight->static_numshadowtrispvsbytes = 0;
3562                 rtlight->static_shadowtrispvs = NULL;
3563                 rtlight->static_numlighttrispvsbytes = 0;
3564                 rtlight->static_lighttrispvs = NULL;
3565                 rtlight->compiled = false;
3566         }
3567 }
3568
3569 void R_Shadow_UncompileWorldLights(void)
3570 {
3571         size_t lightindex;
3572         dlight_t *light;
3573         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
3574         for (lightindex = 0;lightindex < range;lightindex++)
3575         {
3576                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
3577                 if (!light)
3578                         continue;
3579                 R_RTLight_Uncompile(&light->rtlight);
3580         }
3581 }
3582
3583 static void R_Shadow_ComputeShadowCasterCullingPlanes(rtlight_t *rtlight)
3584 {
3585         int i, j;
3586         mplane_t plane;
3587         // reset the count of frustum planes
3588         // see rtlight->cached_frustumplanes definition for how much this array
3589         // can hold
3590         rtlight->cached_numfrustumplanes = 0;
3591
3592         if (r_trippy.integer)
3593                 return;
3594
3595         // haven't implemented a culling path for ortho rendering
3596         if (!r_refdef.view.useperspective)
3597         {
3598                 // check if the light is on screen and copy the 4 planes if it is
3599                 for (i = 0;i < 4;i++)
3600                         if (PlaneDiff(rtlight->shadoworigin, &r_refdef.view.frustum[i]) < -0.03125)
3601                                 break;
3602                 if (i == 4)
3603                         for (i = 0;i < 4;i++)
3604                                 rtlight->cached_frustumplanes[rtlight->cached_numfrustumplanes++] = r_refdef.view.frustum[i];
3605                 return;
3606         }
3607
3608 #if 1
3609         // generate a deformed frustum that includes the light origin, this is
3610         // used to cull shadow casting surfaces that can not possibly cast a
3611         // shadow onto the visible light-receiving surfaces, which can be a
3612         // performance gain
3613         //
3614         // if the light origin is onscreen the result will be 4 planes exactly
3615         // if the light origin is offscreen on only one axis the result will
3616         // be exactly 5 planes (split-side case)
3617         // if the light origin is offscreen on two axes the result will be
3618         // exactly 4 planes (stretched corner case)
3619         for (i = 0;i < 4;i++)
3620         {
3621                 // quickly reject standard frustum planes that put the light
3622                 // origin outside the frustum
3623                 if (PlaneDiff(rtlight->shadoworigin, &r_refdef.view.frustum[i]) < -0.03125)
3624                         continue;
3625                 // copy the plane
3626                 rtlight->cached_frustumplanes[rtlight->cached_numfrustumplanes++] = r_refdef.view.frustum[i];
3627         }
3628         // if all the standard frustum planes were accepted, the light is onscreen
3629         // otherwise we need to generate some more planes below...
3630         if (rtlight->cached_numfrustumplanes < 4)
3631         {
3632                 // at least one of the stock frustum planes failed, so we need to
3633                 // create one or two custom planes to enclose the light origin
3634                 for (i = 0;i < 4;i++)
3635                 {
3636                         // create a plane using the view origin and light origin, and a
3637                         // single point from the frustum corner set
3638                         TriangleNormal(r_refdef.view.origin, r_refdef.view.frustumcorner[i], rtlight->shadoworigin, plane.normal);
3639                         VectorNormalize(plane.normal);
3640                         plane.dist = DotProduct(r_refdef.view.origin, plane.normal);
3641                         // see if this plane is backwards and flip it if so
3642                         for (j = 0;j < 4;j++)
3643                                 if (j != i && DotProduct(r_refdef.view.frustumcorner[j], plane.normal) - plane.dist < -0.03125)
3644                                         break;
3645                         if (j < 4)
3646                         {
3647                                 VectorNegate(plane.normal, plane.normal);
3648                                 plane.dist *= -1;
3649                                 // flipped plane, test again to see if it is now valid
3650                                 for (j = 0;j < 4;j++)
3651                                         if (j != i && DotProduct(r_refdef.view.frustumcorner[j], plane.normal) - plane.dist < -0.03125)
3652                                                 break;
3653                                 // if the plane is still not valid, then it is dividing the
3654                                 // frustum and has to be rejected
3655                                 if (j < 4)
3656                                         continue;
3657                         }
3658                         // we have created a valid plane, compute extra info
3659                         PlaneClassify(&plane);
3660                         // copy the plane
3661                         rtlight->cached_frustumplanes[rtlight->cached_numfrustumplanes++] = plane;
3662 #if 1
3663                         // if we've found 5 frustum planes then we have constructed a
3664                         // proper split-side case and do not need to keep searching for
3665                         // planes to enclose the light origin
3666                         if (rtlight->cached_numfrustumplanes == 5)
3667                                 break;
3668 #endif
3669                 }
3670         }
3671 #endif
3672
3673 #if 0
3674         for (i = 0;i < rtlight->cached_numfrustumplanes;i++)
3675         {
3676                 plane = rtlight->cached_frustumplanes[i];
3677                 Con_Printf("light %p plane #%i %f %f %f : %f (%f %f %f %f %f)\n", rtlight, i, plane.normal[0], plane.normal[1], plane.normal[2], plane.dist, PlaneDiff(r_refdef.view.frustumcorner[0], &plane), PlaneDiff(r_refdef.view.frustumcorner[1], &plane), PlaneDiff(r_refdef.view.frustumcorner[2], &plane), PlaneDiff(r_refdef.view.frustumcorner[3], &plane), PlaneDiff(rtlight->shadoworigin, &plane));
3678         }
3679 #endif
3680
3681 #if 0
3682         // now add the light-space box planes if the light box is rotated, as any
3683         // caster outside the oriented light box is irrelevant (even if it passed
3684         // the worldspace light box, which is axial)
3685         if (rtlight->matrix_lighttoworld.m[0][0] != 1 || rtlight->matrix_lighttoworld.m[1][1] != 1 || rtlight->matrix_lighttoworld.m[2][2] != 1)
3686         {
3687                 for (i = 0;i < 6;i++)
3688                 {
3689                         vec3_t v;
3690                         VectorClear(v);
3691                         v[i >> 1] = (i & 1) ? -1 : 1;
3692                         Matrix4x4_Transform(&rtlight->matrix_lighttoworld, v, plane.normal);
3693                         VectorSubtract(plane.normal, rtlight->shadoworigin, plane.normal);
3694                         plane.dist = VectorNormalizeLength(plane.normal);
3695                         plane.dist += DotProduct(plane.normal, rtlight->shadoworigin);
3696                         rtlight->cached_frustumplanes[rtlight->cached_numfrustumplanes++] = plane;
3697                 }
3698         }
3699 #endif
3700
3701 #if 0
3702         // add the world-space reduced box planes
3703         for (i = 0;i < 6;i++)
3704         {
3705                 VectorClear(plane.normal);
3706                 plane.normal[i >> 1] = (i & 1) ? -1 : 1;
3707                 plane.dist = (i & 1) ? -rtlight->cached_cullmaxs[i >> 1] : rtlight->cached_cullmins[i >> 1];
3708                 rtlight->cached_frustumplanes[rtlight->cached_numfrustumplanes++] = plane;
3709         }
3710 #endif
3711
3712 #if 0
3713         {
3714         int j, oldnum;
3715         vec3_t points[8];
3716         vec_t bestdist;
3717         // reduce all plane distances to tightly fit the rtlight cull box, which
3718         // is in worldspace
3719         VectorSet(points[0], rtlight->cached_cullmins[0], rtlight->cached_cullmins[1], rtlight->cached_cullmins[2]);
3720         VectorSet(points[1], rtlight->cached_cullmaxs[0], rtlight->cached_cullmins[1], rtlight->cached_cullmins[2]);
3721         VectorSet(points[2], rtlight->cached_cullmins[0], rtlight->cached_cullmaxs[1], rtlight->cached_cullmins[2]);
3722         VectorSet(points[3], rtlight->cached_cullmaxs[0], rtlight->cached_cullmaxs[1], rtlight->cached_cullmins[2]);
3723         VectorSet(points[4], rtlight->cached_cullmins[0], rtlight->cached_cullmins[1], rtlight->cached_cullmaxs[2]);
3724         VectorSet(points[5], rtlight->cached_cullmaxs[0], rtlight->cached_cullmins[1], rtlight->cached_cullmaxs[2]);
3725         VectorSet(points[6], rtlight->cached_cullmins[0], rtlight->cached_cullmaxs[1], rtlight->cached_cullmaxs[2]);
3726         VectorSet(points[7], rtlight->cached_cullmaxs[0], rtlight->cached_cullmaxs[1], rtlight->cached_cullmaxs[2]);
3727         oldnum = rtlight->cached_numfrustumplanes;
3728         rtlight->cached_numfrustumplanes = 0;
3729         for (j = 0;j < oldnum;j++)
3730         {
3731                 // find the nearest point on the box to this plane
3732                 bestdist = DotProduct(rtlight->cached_frustumplanes[j].normal, points[0]);
3733                 for (i = 1;i < 8;i++)
3734                 {
3735                         dist = DotProduct(rtlight->cached_frustumplanes[j].normal, points[i]);
3736                         if (bestdist > dist)
3737                                 bestdist = dist;
3738                 }
3739                 Con_Printf("light %p %splane #%i %f %f %f : %f < %f\n", rtlight, rtlight->cached_frustumplanes[j].dist < bestdist + 0.03125 ? "^2" : "^1", j, rtlight->cached_frustumplanes[j].normal[0], rtlight->cached_frustumplanes[j].normal[1], rtlight->cached_frustumplanes[j].normal[2], rtlight->cached_frustumplanes[j].dist, bestdist);
3740                 // if the nearest point is near or behind the plane, we want this
3741                 // plane, otherwise the plane is useless as it won't cull anything
3742                 if (rtlight->cached_frustumplanes[j].dist < bestdist + 0.03125)
3743                 {
3744                         PlaneClassify(&rtlight->cached_frustumplanes[j]);
3745                         rtlight->cached_frustumplanes[rtlight->cached_numfrustumplanes++] = rtlight->cached_frustumplanes[j];
3746                 }
3747         }
3748         }
3749 #endif
3750 }
3751
3752 static void R_Shadow_DrawWorldShadow_ShadowMap(int numsurfaces, int *surfacelist, const unsigned char *trispvs, const unsigned char *surfacesides)
3753 {
3754         shadowmesh_t *mesh;
3755
3756         RSurf_ActiveWorldEntity();
3757
3758         if (rsurface.rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
3759         {
3760                 CHECKGLERROR
3761                 GL_CullFace(GL_NONE);
3762                 mesh = rsurface.rtlight->static_meshchain_shadow_shadowmap;
3763                 for (;mesh;mesh = mesh->next)
3764                 {
3765                         if (!mesh->sidetotals[r_shadow_shadowmapside])
3766                                 continue;
3767                         r_refdef.stats[r_stat_lights_shadowtriangles] += mesh->sidetotals[r_shadow_shadowmapside];
3768                         R_Mesh_PrepareVertices_Vertex3f(mesh->numverts, mesh->vertex3f, mesh->vbo_vertexbuffer, mesh->vbooffset_vertex3f);
3769                         R_Mesh_Draw(0, mesh->numverts, mesh->sideoffsets[r_shadow_shadowmapside], mesh->sidetotals[r_shadow_shadowmapside], mesh->element3i, mesh->element3i_indexbuffer, mesh->element3i_bufferoffset, mesh->element3s, mesh->element3s_indexbuffer, mesh->element3s_bufferoffset);
3770                 }
3771                 CHECKGLERROR
3772         }
3773         else if (r_refdef.scene.worldentity->model)
3774                 r_refdef.scene.worldmodel->DrawShadowMap(r_shadow_shadowmapside, r_refdef.scene.worldentity, rsurface.rtlight->shadoworigin, NULL, rsurface.rtlight->radius, numsurfaces, surfacelist, surfacesides, rsurface.rtlight->cached_cullmins, rsurface.rtlight->cached_cullmaxs);
3775
3776         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3777 }
3778
3779 static void R_Shadow_DrawWorldShadow_ShadowVolume(int numsurfaces, int *surfacelist, const unsigned char *trispvs)
3780 {
3781         qboolean zpass = false;
3782         shadowmesh_t *mesh;
3783         int t, tend;
3784         int surfacelistindex;
3785         msurface_t *surface;
3786
3787         // if triangle neighbors are disabled, shadowvolumes are disabled
3788         if (r_refdef.scene.worldmodel->brush.shadowmesh ? !r_refdef.scene.worldmodel->brush.shadowmesh->neighbor3i : !r_refdef.scene.worldmodel->surfmesh.data_neighbor3i)
3789                 return;
3790
3791         RSurf_ActiveWorldEntity();
3792
3793         if (rsurface.rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
3794         {
3795                 CHECKGLERROR
3796                 if (r_shadow_rendermode != R_SHADOW_RENDERMODE_VISIBLEVOLUMES)
3797                 {
3798                         zpass = R_Shadow_UseZPass(r_refdef.scene.worldmodel->normalmins, r_refdef.scene.worldmodel->normalmaxs);
3799                         R_Shadow_RenderMode_StencilShadowVolumes(zpass);
3800                 }
3801                 mesh = zpass ? rsurface.rtlight->static_meshchain_shadow_zpass : rsurface.rtlight->static_meshchain_shadow_zfail;
3802                 for (;mesh;mesh = mesh->next)
3803                 {
3804                         r_refdef.stats[r_stat_lights_shadowtriangles] += mesh->numtriangles;
3805                         R_Mesh_PrepareVertices_Vertex3f(mesh->numverts, mesh->vertex3f, mesh->vbo_vertexbuffer, mesh->vbooffset_vertex3f);
3806                         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZPASS_STENCIL)
3807                         {
3808                                 // increment stencil if frontface is infront of depthbuffer
3809                                 GL_CullFace(r_refdef.view.cullface_back);
3810                                 R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_INCR, GL_ALWAYS, 128, 255);
3811                                 R_Mesh_Draw(0, mesh->numverts, 0, mesh->numtriangles, mesh->element3i, mesh->element3i_indexbuffer, mesh->element3i_bufferoffset, mesh->element3s, mesh->element3s_indexbuffer, mesh->element3s_bufferoffset);
3812                                 // decrement stencil if backface is infront of depthbuffer
3813                                 GL_CullFace(r_refdef.view.cullface_front);
3814                                 R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_DECR, GL_ALWAYS, 128, 255);
3815                         }
3816                         else if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZFAIL_STENCIL)
3817                         {
3818                                 // decrement stencil if backface is behind depthbuffer
3819                                 GL_CullFace(r_refdef.view.cullface_front);
3820                                 R_SetStencil(true, 255, GL_KEEP, GL_DECR, GL_KEEP, GL_ALWAYS, 128, 255);
3821                                 R_Mesh_Draw(0, mesh->numverts, 0, mesh->numtriangles, mesh->element3i, mesh->element3i_indexbuffer, mesh->element3i_bufferoffset, mesh->element3s, mesh->element3s_indexbuffer, mesh->element3s_bufferoffset);
3822                                 // increment stencil if frontface is behind depthbuffer
3823                                 GL_CullFace(r_refdef.view.cullface_back);
3824                                 R_SetStencil(true, 255, GL_KEEP, GL_INCR, GL_KEEP, GL_ALWAYS, 128, 255);
3825                         }
3826                         R_Mesh_Draw(0, mesh->numverts, 0, mesh->numtriangles, mesh->element3i, mesh->element3i_indexbuffer, mesh->element3i_bufferoffset, mesh->element3s, mesh->element3s_indexbuffer, mesh->element3s_bufferoffset);
3827                 }
3828                 CHECKGLERROR
3829         }
3830         else if (numsurfaces && r_refdef.scene.worldmodel->brush.shadowmesh)
3831         {
3832                 // use the shadow trispvs calculated earlier by GetLightInfo to cull world triangles on this dynamic light
3833                 R_Shadow_PrepareShadowMark(r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles);
3834                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
3835                 {
3836                         surface = r_refdef.scene.worldmodel->data_surfaces + surfacelist[surfacelistindex];
3837                         for (t = surface->num_firstshadowmeshtriangle, tend = t + surface->num_triangles;t < tend;t++)
3838                                 if (CHECKPVSBIT(trispvs, t))
3839                                         shadowmarklist[numshadowmark++] = t;
3840                 }
3841                 R_Shadow_VolumeFromList(r_refdef.scene.worldmodel->brush.shadowmesh->numverts, r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles, r_refdef.scene.worldmodel->brush.shadowmesh->vertex3f, r_refdef.scene.worldmodel->brush.shadowmesh->element3i, r_refdef.scene.worldmodel->brush.shadowmesh->neighbor3i, rsurface.rtlight->shadoworigin, NULL, rsurface.rtlight->radius + r_refdef.scene.worldmodel->radius*2 + r_shadow_projectdistance.value, numshadowmark, shadowmarklist, r_refdef.scene.worldmodel->normalmins, r_refdef.scene.worldmodel->normalmaxs);
3842         }
3843         else if (numsurfaces)
3844         {
3845                 r_refdef.scene.worldmodel->DrawShadowVolume(r_refdef.scene.worldentity, rsurface.rtlight->shadoworigin, NULL, rsurface.rtlight->radius, numsurfaces, surfacelist, rsurface.rtlight->cached_cullmins, rsurface.rtlight->cached_cullmaxs);
3846         }
3847
3848         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3849 }
3850
3851 static void R_Shadow_DrawEntityShadow(entity_render_t *ent)
3852 {
3853         vec3_t relativeshadoworigin, relativeshadowmins, relativeshadowmaxs;
3854         vec_t relativeshadowradius;
3855         RSurf_ActiveModelEntity(ent, false, false, false);
3856         Matrix4x4_Transform(&ent->inversematrix, rsurface.rtlight->shadoworigin, relativeshadoworigin);
3857         // we need to re-init the shader for each entity because the matrix changed
3858         relativeshadowradius = rsurface.rtlight->radius / ent->scale;
3859         relativeshadowmins[0] = relativeshadoworigin[0] - relativeshadowradius;
3860         relativeshadowmins[1] = relativeshadoworigin[1] - relativeshadowradius;
3861         relativeshadowmins[2] = relativeshadoworigin[2] - relativeshadowradius;
3862         relativeshadowmaxs[0] = relativeshadoworigin[0] + relativeshadowradius;
3863         relativeshadowmaxs[1] = relativeshadoworigin[1] + relativeshadowradius;
3864         relativeshadowmaxs[2] = relativeshadoworigin[2] + relativeshadowradius;
3865         switch (r_shadow_rendermode)
3866         {
3867         case R_SHADOW_RENDERMODE_SHADOWMAP2D:
3868                 ent->model->DrawShadowMap(r_shadow_shadowmapside, ent, relativeshadoworigin, NULL, relativeshadowradius, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, NULL, relativeshadowmins, relativeshadowmaxs);
3869                 break;
3870         default:
3871                 ent->model->DrawShadowVolume(ent, relativeshadoworigin, NULL, relativeshadowradius, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, relativeshadowmins, relativeshadowmaxs);
3872                 break;
3873         }
3874         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3875 }
3876
3877 void R_Shadow_SetupEntityLight(const entity_render_t *ent)
3878 {
3879         // set up properties for rendering light onto this entity
3880         RSurf_ActiveModelEntity(ent, true, true, false);
3881         Matrix4x4_Concat(&rsurface.entitytolight, &rsurface.rtlight->matrix_worldtolight, &ent->matrix);
3882         Matrix4x4_Concat(&rsurface.entitytoattenuationxyz, &matrix_attenuationxyz, &rsurface.entitytolight);
3883         Matrix4x4_Concat(&rsurface.entitytoattenuationz, &matrix_attenuationz, &rsurface.entitytolight);
3884         Matrix4x4_Transform(&ent->inversematrix, rsurface.rtlight->shadoworigin, rsurface.entitylightorigin);
3885 }
3886
3887 static void R_Shadow_DrawWorldLight(int numsurfaces, int *surfacelist, const unsigned char *lighttrispvs)
3888 {
3889         if (!r_refdef.scene.worldmodel->DrawLight)
3890                 return;
3891
3892         // set up properties for rendering light onto this entity
3893         RSurf_ActiveWorldEntity();
3894         rsurface.entitytolight = rsurface.rtlight->matrix_worldtolight;
3895         Matrix4x4_Concat(&rsurface.entitytoattenuationxyz, &matrix_attenuationxyz, &rsurface.entitytolight);
3896         Matrix4x4_Concat(&rsurface.entitytoattenuationz, &matrix_attenuationz, &rsurface.entitytolight);
3897         VectorCopy(rsurface.rtlight->shadoworigin, rsurface.entitylightorigin);
3898
3899         r_refdef.scene.worldmodel->DrawLight(r_refdef.scene.worldentity, numsurfaces, surfacelist, lighttrispvs);
3900
3901         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3902 }
3903
3904 static void R_Shadow_DrawEntityLight(entity_render_t *ent)
3905 {
3906         dp_model_t *model = ent->model;
3907         if (!model->DrawLight)
3908                 return;
3909
3910         R_Shadow_SetupEntityLight(ent);
3911
3912         model->DrawLight(ent, model->nummodelsurfaces, model->sortedmodelsurfaces, NULL);
3913
3914         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3915 }
3916
3917 static void R_Shadow_PrepareLight(rtlight_t *rtlight)
3918 {
3919         int i;
3920         float f;
3921         int numleafs, numsurfaces;
3922         int *leaflist, *surfacelist;
3923         unsigned char *leafpvs;
3924         unsigned char *shadowtrispvs;
3925         unsigned char *lighttrispvs;
3926         //unsigned char *surfacesides;
3927         int numlightentities;
3928         int numlightentities_noselfshadow;
3929         int numshadowentities;
3930         int numshadowentities_noselfshadow;
3931         static entity_render_t *lightentities[MAX_EDICTS];
3932         static entity_render_t *lightentities_noselfshadow[MAX_EDICTS];
3933         static entity_render_t *shadowentities[MAX_EDICTS];
3934         static entity_render_t *shadowentities_noselfshadow[MAX_EDICTS];
3935         qboolean nolight;
3936         qboolean castshadows;
3937
3938         rtlight->draw = false;
3939         rtlight->cached_numlightentities               = 0;
3940         rtlight->cached_numlightentities_noselfshadow  = 0;
3941         rtlight->cached_numshadowentities              = 0;
3942         rtlight->cached_numshadowentities_noselfshadow = 0;
3943         rtlight->cached_numsurfaces                    = 0;
3944         rtlight->cached_lightentities                  = NULL;
3945         rtlight->cached_lightentities_noselfshadow     = NULL;
3946         rtlight->cached_shadowentities                 = NULL;
3947         rtlight->cached_shadowentities_noselfshadow    = NULL;
3948         rtlight->cached_shadowtrispvs                  = NULL;
3949         rtlight->cached_lighttrispvs                   = NULL;
3950         rtlight->cached_surfacelist                    = NULL;
3951
3952         // skip lights that don't light because of ambientscale+diffusescale+specularscale being 0 (corona only lights)
3953         // skip lights that are basically invisible (color 0 0 0)
3954         nolight = VectorLength2(rtlight->color) * (rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale) < (1.0f / 1048576.0f);
3955
3956         // loading is done before visibility checks because loading should happen
3957         // all at once at the start of a level, not when it stalls gameplay.
3958         // (especially important to benchmarks)
3959         // compile light
3960         if (rtlight->isstatic && !nolight && (!rtlight->compiled || (rtlight->shadow && rtlight->shadowmode != (int)r_shadow_shadowmode)) && r_shadow_realtime_world_compile.integer)
3961         {
3962                 if (rtlight->compiled)
3963                         R_RTLight_Uncompile(rtlight);
3964                 R_RTLight_Compile(rtlight);
3965         }
3966
3967         // load cubemap
3968         rtlight->currentcubemap = rtlight->cubemapname[0] ? R_GetCubemap(rtlight->cubemapname) : r_texture_whitecube;
3969
3970         // look up the light style value at this time
3971         f = (rtlight->style >= 0 ? r_refdef.scene.rtlightstylevalue[rtlight->style] : 1) * r_shadow_lightintensityscale.value;
3972         VectorScale(rtlight->color, f, rtlight->currentcolor);
3973         /*
3974         if (rtlight->selected)
3975         {
3976                 f = 2 + sin(realtime * M_PI * 4.0);
3977                 VectorScale(rtlight->currentcolor, f, rtlight->currentcolor);
3978         }
3979         */
3980
3981         // if lightstyle is currently off, don't draw the light
3982         if (VectorLength2(rtlight->currentcolor) < (1.0f / 1048576.0f))
3983                 return;
3984
3985         // skip processing on corona-only lights
3986         if (nolight)
3987                 return;
3988
3989         // if the light box is offscreen, skip it
3990         if (R_CullBox(rtlight->cullmins, rtlight->cullmaxs))
3991                 return;
3992
3993         VectorCopy(rtlight->cullmins, rtlight->cached_cullmins);
3994         VectorCopy(rtlight->cullmaxs, rtlight->cached_cullmaxs);
3995
3996         R_Shadow_ComputeShadowCasterCullingPlanes(rtlight);
3997
3998         // don't allow lights to be drawn if using r_shadow_bouncegrid 2, except if we're using static bouncegrid where dynamic lights still need to draw
3999         if (r_shadow_bouncegrid.integer == 2 && (rtlight->isstatic || !r_shadow_bouncegrid_static.integer))
4000                 return;
4001
4002         if (rtlight->compiled && r_shadow_realtime_world_compile.integer)
4003         {
4004                 // compiled light, world available and can receive realtime lighting
4005                 // retrieve leaf information
4006                 numleafs = rtlight->static_numleafs;
4007                 leaflist = rtlight->static_leaflist;
4008                 leafpvs = rtlight->static_leafpvs;
4009                 numsurfaces = rtlight->static_numsurfaces;
4010                 surfacelist = rtlight->static_surfacelist;
4011                 //surfacesides = NULL;
4012                 shadowtrispvs = rtlight->static_shadowtrispvs;
4013                 lighttrispvs = rtlight->static_lighttrispvs;
4014         }
4015         else if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->GetLightInfo)
4016         {
4017                 // dynamic light, world available and can receive realtime lighting
4018                 // calculate lit surfaces and leafs
4019                 r_refdef.scene.worldmodel->GetLightInfo(r_refdef.scene.worldentity, rtlight->shadoworigin, rtlight->radius, rtlight->cached_cullmins, rtlight->cached_cullmaxs, r_shadow_buffer_leaflist, r_shadow_buffer_leafpvs, &numleafs, r_shadow_buffer_surfacelist, r_shadow_buffer_surfacepvs, &numsurfaces, r_shadow_buffer_shadowtrispvs, r_shadow_buffer_lighttrispvs, r_shadow_buffer_visitingleafpvs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes);
4020                 R_Shadow_ComputeShadowCasterCullingPlanes(rtlight);
4021                 leaflist = r_shadow_buffer_leaflist;
4022                 leafpvs = r_shadow_buffer_leafpvs;
4023                 surfacelist = r_shadow_buffer_surfacelist;
4024                 //surfacesides = r_shadow_buffer_surfacesides;
4025                 shadowtrispvs = r_shadow_buffer_shadowtrispvs;
4026                 lighttrispvs = r_shadow_buffer_lighttrispvs;
4027                 // if the reduced leaf bounds are offscreen, skip it
4028                 if (R_CullBox(rtlight->cached_cullmins, rtlight->cached_cullmaxs))
4029                         return;
4030         }
4031         else
4032         {
4033                 // no world
4034                 numleafs = 0;
4035                 leaflist = NULL;
4036                 leafpvs = NULL;
4037                 numsurfaces = 0;
4038                 surfacelist = NULL;
4039                 //surfacesides = NULL;
4040                 shadowtrispvs = NULL;
4041                 lighttrispvs = NULL;
4042         }
4043         // check if light is illuminating any visible leafs
4044         if (numleafs)
4045         {
4046                 for (i = 0;i < numleafs;i++)
4047                         if (r_refdef.viewcache.world_leafvisible[leaflist[i]])
4048                                 break;
4049                 if (i == numleafs)
4050                         return;
4051         }
4052
4053         // make a list of lit entities and shadow casting entities
4054         numlightentities = 0;
4055         numlightentities_noselfshadow = 0;
4056         numshadowentities = 0;
4057         numshadowentities_noselfshadow = 0;
4058
4059         // add dynamic entities that are lit by the light
4060         for (i = 0;i < r_refdef.scene.numentities;i++)
4061         {
4062                 dp_model_t *model;
4063                 entity_render_t *ent = r_refdef.scene.entities[i];
4064                 vec3_t org;
4065                 if (!BoxesOverlap(ent->mins, ent->maxs, rtlight->cached_cullmins, rtlight->cached_cullmaxs))
4066                         continue;
4067                 // skip the object entirely if it is not within the valid
4068                 // shadow-casting region (which includes the lit region)
4069                 if (R_CullBoxCustomPlanes(ent->mins, ent->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
4070                         continue;
4071                 if (!(model = ent->model))
4072                         continue;
4073                 if (r_refdef.viewcache.entityvisible[i] && model->DrawLight && (ent->flags & RENDER_LIGHT))
4074                 {
4075                         // this entity wants to receive light, is visible, and is
4076                         // inside the light box
4077                         // TODO: check if the surfaces in the model can receive light
4078                         // so now check if it's in a leaf seen by the light
4079                         if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->brush.BoxTouchingLeafPVS && !r_refdef.scene.worldmodel->brush.BoxTouchingLeafPVS(r_refdef.scene.worldmodel, leafpvs, ent->mins, ent->maxs))
4080                                 continue;
4081                         if (ent->flags & RENDER_NOSELFSHADOW)
4082                                 lightentities_noselfshadow[numlightentities_noselfshadow++] = ent;
4083                         else
4084                                 lightentities[numlightentities++] = ent;
4085                         // since it is lit, it probably also casts a shadow...
4086                         // about the VectorDistance2 - light emitting entities should not cast their own shadow
4087                         Matrix4x4_OriginFromMatrix(&ent->matrix, org);
4088                         if ((ent->flags & RENDER_SHADOW) && model->DrawShadowVolume && VectorDistance2(org, rtlight->shadoworigin) > 0.1)
4089                         {
4090                                 // note: exterior models without the RENDER_NOSELFSHADOW
4091                                 // flag still create a RENDER_NOSELFSHADOW shadow but
4092                                 // are lit normally, this means that they are
4093                                 // self-shadowing but do not shadow other
4094                                 // RENDER_NOSELFSHADOW entities such as the gun
4095                                 // (very weird, but keeps the player shadow off the gun)
4096                                 if (ent->flags & (RENDER_NOSELFSHADOW | RENDER_EXTERIORMODEL))
4097                                         shadowentities_noselfshadow[numshadowentities_noselfshadow++] = ent;
4098                                 else
4099                                         shadowentities[numshadowentities++] = ent;
4100                         }
4101                 }
4102                 else if (ent->flags & RENDER_SHADOW)
4103                 {
4104                         // this entity is not receiving light, but may still need to
4105                         // cast a shadow...
4106                         // TODO: check if the surfaces in the model can cast shadow
4107                         // now check if it is in a leaf seen by the light
4108                         if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->brush.BoxTouchingLeafPVS && !r_refdef.scene.worldmodel->brush.BoxTouchingLeafPVS(r_refdef.scene.worldmodel, leafpvs, ent->mins, ent->maxs))
4109                                 continue;
4110                         // about the VectorDistance2 - light emitting entities should not cast their own shadow
4111                         Matrix4x4_OriginFromMatrix(&ent->matrix, org);
4112                         if ((ent->flags & RENDER_SHADOW) && model->DrawShadowVolume && VectorDistance2(org, rtlight->shadoworigin) > 0.1)
4113                         {
4114                                 if (ent->flags & (RENDER_NOSELFSHADOW | RENDER_EXTERIORMODEL))
4115                                         shadowentities_noselfshadow[numshadowentities_noselfshadow++] = ent;
4116                                 else
4117                                         shadowentities[numshadowentities++] = ent;
4118                         }
4119                 }
4120         }
4121
4122         // return if there's nothing at all to light
4123         if (numsurfaces + numlightentities + numlightentities_noselfshadow == 0)
4124                 return;
4125
4126         // count this light in the r_speeds
4127         r_refdef.stats[r_stat_lights]++;
4128
4129         // flag it as worth drawing later
4130         rtlight->draw = true;
4131
4132         // if we have shadows disabled, don't count the shadow entities, this way we don't do the R_AnimCache_GetEntity on each one
4133         castshadows = numsurfaces + numshadowentities + numshadowentities_noselfshadow > 0 && rtlight->shadow && (rtlight->isstatic ? r_refdef.scene.rtworldshadows : r_refdef.scene.rtdlightshadows);
4134         if (!castshadows)
4135                 numshadowentities = numshadowentities_noselfshadow = 0;
4136
4137         // cache all the animated entities that cast a shadow but are not visible
4138         for (i = 0;i < numshadowentities;i++)
4139                 R_AnimCache_GetEntity(shadowentities[i], false, false);
4140         for (i = 0;i < numshadowentities_noselfshadow;i++)
4141                 R_AnimCache_GetEntity(shadowentities_noselfshadow[i], false, false);
4142
4143         // allocate some temporary memory for rendering this light later in the frame
4144         // reusable buffers need to be copied, static data can be used as-is
4145         rtlight->cached_numlightentities               = numlightentities;
4146         rtlight->cached_numlightentities_noselfshadow  = numlightentities_noselfshadow;
4147         rtlight->cached_numshadowentities              = numshadowentities;
4148         rtlight->cached_numshadowentities_noselfshadow = numshadowentities_noselfshadow;
4149         rtlight->cached_numsurfaces                    = numsurfaces;
4150         rtlight->cached_lightentities                  = (entity_render_t**)R_FrameData_Store(numlightentities*sizeof(entity_render_t*), (void*)lightentities);
4151         rtlight->cached_lightentities_noselfshadow     = (entity_render_t**)R_FrameData_Store(numlightentities_noselfshadow*sizeof(entity_render_t*), (void*)lightentities_noselfshadow);
4152         rtlight->cached_shadowentities                 = (entity_render_t**)R_FrameData_Store(numshadowentities*sizeof(entity_render_t*), (void*)shadowentities);
4153         rtlight->cached_shadowentities_noselfshadow    = (entity_render_t**)R_FrameData_Store(numshadowentities_noselfshadow*sizeof(entity_render_t *), (void*)shadowentities_noselfshadow);
4154         if (shadowtrispvs == r_shadow_buffer_shadowtrispvs)
4155         {
4156                 int numshadowtrispvsbytes = (((r_refdef.scene.worldmodel->brush.shadowmesh ? r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles : r_refdef.scene.worldmodel->surfmesh.num_triangles) + 7) >> 3);
4157                 int numlighttrispvsbytes = ((r_refdef.scene.worldmodel->surfmesh.num_triangles + 7) >> 3);
4158                 rtlight->cached_shadowtrispvs                  =   (unsigned char *)R_FrameData_Store(numshadowtrispvsbytes, shadowtrispvs);
4159                 rtlight->cached_lighttrispvs                   =   (unsigned char *)R_FrameData_Store(numlighttrispvsbytes, lighttrispvs);
4160                 rtlight->cached_surfacelist                    =              (int*)R_FrameData_Store(numsurfaces*sizeof(int), (void*)surfacelist);
4161         }
4162         else
4163         {
4164                 // compiled light data
4165                 rtlight->cached_shadowtrispvs = shadowtrispvs;
4166                 rtlight->cached_lighttrispvs = lighttrispvs;
4167                 rtlight->cached_surfacelist = surfacelist;
4168         }
4169 }
4170
4171 static void R_Shadow_DrawLight(rtlight_t *rtlight)
4172 {
4173         int i;
4174         int numsurfaces;
4175         unsigned char *shadowtrispvs, *lighttrispvs, *surfacesides;
4176         int numlightentities;
4177         int numlightentities_noselfshadow;
4178         int numshadowentities;
4179         int numshadowentities_noselfshadow;
4180         entity_render_t **lightentities;
4181         entity_render_t **lightentities_noselfshadow;
4182         entity_render_t **shadowentities;
4183         entity_render_t **shadowentities_noselfshadow;
4184         int *surfacelist;
4185         static unsigned char entitysides[MAX_EDICTS];
4186         static unsigned char entitysides_noselfshadow[MAX_EDICTS];
4187         vec3_t nearestpoint;
4188         vec_t distance;
4189         qboolean castshadows;
4190         int lodlinear;
4191
4192         // check if we cached this light this frame (meaning it is worth drawing)
4193         if (!rtlight->draw)
4194                 return;
4195
4196         numlightentities = rtlight->cached_numlightentities;
4197         numlightentities_noselfshadow = rtlight->cached_numlightentities_noselfshadow;
4198         numshadowentities = rtlight->cached_numshadowentities;
4199         numshadowentities_noselfshadow = rtlight->cached_numshadowentities_noselfshadow;
4200         numsurfaces = rtlight->cached_numsurfaces;
4201         lightentities = rtlight->cached_lightentities;
4202         lightentities_noselfshadow = rtlight->cached_lightentities_noselfshadow;
4203         shadowentities = rtlight->cached_shadowentities;
4204         shadowentities_noselfshadow = rtlight->cached_shadowentities_noselfshadow;
4205         shadowtrispvs = rtlight->cached_shadowtrispvs;
4206         lighttrispvs = rtlight->cached_lighttrispvs;
4207         surfacelist = rtlight->cached_surfacelist;
4208
4209         // set up a scissor rectangle for this light
4210         if (R_Shadow_ScissorForBBox(rtlight->cached_cullmins, rtlight->cached_cullmaxs))
4211                 return;
4212
4213         // don't let sound skip if going slow
4214         if (r_refdef.scene.extraupdate)
4215                 S_ExtraUpdate ();
4216
4217         // make this the active rtlight for rendering purposes
4218         R_Shadow_RenderMode_ActiveLight(rtlight);
4219
4220         if (r_showshadowvolumes.integer && r_refdef.view.showdebug && numsurfaces + numshadowentities + numshadowentities_noselfshadow && rtlight->shadow && (rtlight->isstatic ? r_refdef.scene.rtworldshadows : r_refdef.scene.rtdlightshadows))
4221         {
4222                 // optionally draw visible shape of the shadow volumes
4223                 // for performance analysis by level designers
4224                 R_Shadow_RenderMode_VisibleShadowVolumes();
4225                 if (numsurfaces)
4226                         R_Shadow_DrawWorldShadow_ShadowVolume(numsurfaces, surfacelist, shadowtrispvs);
4227                 for (i = 0;i < numshadowentities;i++)
4228                         R_Shadow_DrawEntityShadow(shadowentities[i]);
4229                 for (i = 0;i < numshadowentities_noselfshadow;i++)
4230                         R_Shadow_DrawEntityShadow(shadowentities_noselfshadow[i]);
4231                 R_Shadow_RenderMode_VisibleLighting(false, false);
4232         }
4233
4234         if (r_showlighting.integer && r_refdef.view.showdebug && numsurfaces + numlightentities + numlightentities_noselfshadow)
4235         {
4236                 // optionally draw the illuminated areas
4237                 // for performance analysis by level designers
4238                 R_Shadow_RenderMode_VisibleLighting(false, false);
4239                 if (numsurfaces)
4240                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
4241                 for (i = 0;i < numlightentities;i++)
4242                         R_Shadow_DrawEntityLight(lightentities[i]);
4243                 for (i = 0;i < numlightentities_noselfshadow;i++)
4244                         R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
4245         }
4246
4247         castshadows = numsurfaces + numshadowentities + numshadowentities_noselfshadow > 0 && rtlight->shadow && (rtlight->isstatic ? r_refdef.scene.rtworldshadows : r_refdef.scene.rtdlightshadows);
4248
4249         nearestpoint[0] = bound(rtlight->cullmins[0], r_refdef.view.origin[0], rtlight->cullmaxs[0]);
4250         nearestpoint[1] = bound(rtlight->cullmins[1], r_refdef.view.origin[1], rtlight->cullmaxs[1]);
4251         nearestpoint[2] = bound(rtlight->cullmins[2], r_refdef.view.origin[2], rtlight->cullmaxs[2]);
4252         distance = VectorDistance(nearestpoint, r_refdef.view.origin);
4253
4254         lodlinear = (rtlight->radius * r_shadow_shadowmapping_precision.value) / sqrt(max(1.0f, distance/rtlight->radius));
4255         //lodlinear = (int)(r_shadow_shadowmapping_lod_bias.value + r_shadow_shadowmapping_lod_scale.value * rtlight->radius / max(1.0f, distance));
4256         lodlinear = bound(r_shadow_shadowmapping_minsize.integer, lodlinear, r_shadow_shadowmapmaxsize);
4257
4258         if (castshadows && r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAP2D)
4259         {
4260                 float borderbias;
4261                 int side;
4262                 int size;
4263                 int castermask = 0;
4264                 int receivermask = 0;
4265                 matrix4x4_t radiustolight = rtlight->matrix_worldtolight;
4266                 Matrix4x4_Abs(&radiustolight);
4267
4268                 r_shadow_shadowmaplod = 0;
4269                 for (i = 1;i < R_SHADOW_SHADOWMAP_NUMCUBEMAPS;i++)
4270                         if ((r_shadow_shadowmapmaxsize >> i) > lodlinear)
4271                                 r_shadow_shadowmaplod = i;
4272
4273                 size = bound(r_shadow_shadowmapborder, lodlinear, r_shadow_shadowmapmaxsize);
4274
4275                 borderbias = r_shadow_shadowmapborder / (float)(size - r_shadow_shadowmapborder);
4276
4277                 surfacesides = NULL;
4278                 if (numsurfaces)
4279                 {
4280                         if (rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
4281                         {
4282                                 castermask = rtlight->static_shadowmap_casters;
4283                                 receivermask = rtlight->static_shadowmap_receivers;
4284                         }
4285                         else
4286                         {
4287                                 surfacesides = r_shadow_buffer_surfacesides;
4288                                 for(i = 0;i < numsurfaces;i++)
4289                                 {
4290                                         msurface_t *surface = r_refdef.scene.worldmodel->data_surfaces + surfacelist[i];
4291                                         surfacesides[i] = R_Shadow_CalcBBoxSideMask(surface->mins, surface->maxs, &rtlight->matrix_worldtolight, &radiustolight, borderbias);
4292                                         castermask |= surfacesides[i];
4293                                         receivermask |= surfacesides[i];
4294                                 }
4295                         }
4296                 }
4297                 if (receivermask < 0x3F)
4298                 {
4299                         for (i = 0;i < numlightentities;i++)
4300                                 receivermask |= R_Shadow_CalcEntitySideMask(lightentities[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias);
4301                         if (receivermask < 0x3F)
4302                                 for(i = 0; i < numlightentities_noselfshadow;i++)
4303                                         receivermask |= R_Shadow_CalcEntitySideMask(lightentities_noselfshadow[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias);
4304                 }
4305
4306                 receivermask &= R_Shadow_CullFrustumSides(rtlight, size, r_shadow_shadowmapborder);
4307
4308                 if (receivermask)
4309                 {
4310                         for (i = 0;i < numshadowentities;i++)
4311                                 castermask |= (entitysides[i] = R_Shadow_CalcEntitySideMask(shadowentities[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias));
4312                         for (i = 0;i < numshadowentities_noselfshadow;i++)
4313                                 castermask |= (entitysides_noselfshadow[i] = R_Shadow_CalcEntitySideMask(shadowentities_noselfshadow[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias));
4314                 }
4315
4316                 //Con_Printf("distance %f lodlinear %i (lod %i) size %i\n", distance, lodlinear, r_shadow_shadowmaplod, size);
4317
4318                 // render shadow casters into 6 sided depth texture
4319                 for (side = 0;side < 6;side++) if (receivermask & (1 << side))
4320                 {
4321                         R_Shadow_RenderMode_ShadowMap(side, receivermask, size);
4322                         if (! (castermask & (1 << side))) continue;
4323                         if (numsurfaces)
4324                                 R_Shadow_DrawWorldShadow_ShadowMap(numsurfaces, surfacelist, shadowtrispvs, surfacesides);
4325                         for (i = 0;i < numshadowentities;i++) if (entitysides[i] & (1 << side))
4326                                 R_Shadow_DrawEntityShadow(shadowentities[i]);
4327                 }
4328
4329                 if (numlightentities_noselfshadow)
4330                 {
4331                         // render lighting using the depth texture as shadowmap
4332                         // draw lighting in the unmasked areas
4333                         R_Shadow_RenderMode_Lighting(false, false, true);
4334                         for (i = 0;i < numlightentities_noselfshadow;i++)
4335                                 R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
4336                 }
4337
4338                 // render shadow casters into 6 sided depth texture
4339                 if (numshadowentities_noselfshadow)
4340                 {
4341                         for (side = 0;side < 6;side++) if ((receivermask & castermask) & (1 << side))
4342                         {
4343                                 R_Shadow_RenderMode_ShadowMap(side, 0, size);
4344                                 for (i = 0;i < numshadowentities_noselfshadow;i++) if (entitysides_noselfshadow[i] & (1 << side))
4345                                         R_Shadow_DrawEntityShadow(shadowentities_noselfshadow[i]);
4346                         }
4347                 }
4348
4349                 // render lighting using the depth texture as shadowmap
4350                 // draw lighting in the unmasked areas
4351                 R_Shadow_RenderMode_Lighting(false, false, true);
4352                 // draw lighting in the unmasked areas
4353                 if (numsurfaces)
4354                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
4355                 for (i = 0;i < numlightentities;i++)
4356                         R_Shadow_DrawEntityLight(lightentities[i]);
4357         }
4358         else if (castshadows && vid.stencil)
4359         {
4360                 // draw stencil shadow volumes to mask off pixels that are in shadow
4361                 // so that they won't receive lighting
4362                 GL_Scissor(r_shadow_lightscissor[0], r_shadow_lightscissor[1], r_shadow_lightscissor[2], r_shadow_lightscissor[3]);
4363                 R_Shadow_ClearStencil();
4364
4365                 if (numsurfaces)
4366                         R_Shadow_DrawWorldShadow_ShadowVolume(numsurfaces, surfacelist, shadowtrispvs);
4367                 for (i = 0;i < numshadowentities;i++)
4368                         R_Shadow_DrawEntityShadow(shadowentities[i]);
4369
4370                 // draw lighting in the unmasked areas
4371                 R_Shadow_RenderMode_Lighting(true, false, false);
4372                 for (i = 0;i < numlightentities_noselfshadow;i++)
4373                         R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
4374
4375                 for (i = 0;i < numshadowentities_noselfshadow;i++)
4376                         R_Shadow_DrawEntityShadow(shadowentities_noselfshadow[i]);
4377
4378                 // draw lighting in the unmasked areas
4379                 R_Shadow_RenderMode_Lighting(true, false, false);
4380                 if (numsurfaces)
4381                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
4382                 for (i = 0;i < numlightentities;i++)
4383                         R_Shadow_DrawEntityLight(lightentities[i]);
4384         }
4385         else
4386         {
4387                 // draw lighting in the unmasked areas
4388                 R_Shadow_RenderMode_Lighting(false, false, false);
4389                 if (numsurfaces)
4390                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
4391                 for (i = 0;i < numlightentities;i++)
4392                         R_Shadow_DrawEntityLight(lightentities[i]);
4393                 for (i = 0;i < numlightentities_noselfshadow;i++)
4394                         R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
4395         }
4396
4397         if (r_shadow_usingdeferredprepass)
4398         {
4399                 // when rendering deferred lighting, we simply rasterize the box
4400                 if (castshadows && r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAP2D)
4401                         R_Shadow_RenderMode_DrawDeferredLight(false, true);
4402                 else if (castshadows && vid.stencil)
4403                         R_Shadow_RenderMode_DrawDeferredLight(true, false);
4404                 else
4405                         R_Shadow_RenderMode_DrawDeferredLight(false, false);
4406         }
4407 }
4408
4409 static void R_Shadow_FreeDeferred(void)
4410 {
4411         R_Mesh_DestroyFramebufferObject(r_shadow_prepassgeometryfbo);
4412         r_shadow_prepassgeometryfbo = 0;
4413
4414         R_Mesh_DestroyFramebufferObject(r_shadow_prepasslightingdiffusespecularfbo);
4415         r_shadow_prepasslightingdiffusespecularfbo = 0;
4416
4417         R_Mesh_DestroyFramebufferObject(r_shadow_prepasslightingdiffusefbo);
4418         r_shadow_prepasslightingdiffusefbo = 0;
4419
4420         if (r_shadow_prepassgeometrydepthbuffer)
4421                 R_FreeTexture(r_shadow_prepassgeometrydepthbuffer);
4422         r_shadow_prepassgeometrydepthbuffer = NULL;
4423
4424         if (r_shadow_prepassgeometrynormalmaptexture)
4425                 R_FreeTexture(r_shadow_prepassgeometrynormalmaptexture);
4426         r_shadow_prepassgeometrynormalmaptexture = NULL;
4427
4428         if (r_shadow_prepasslightingdiffusetexture)
4429                 R_FreeTexture(r_shadow_prepasslightingdiffusetexture);
4430         r_shadow_prepasslightingdiffusetexture = NULL;
4431
4432         if (r_shadow_prepasslightingspeculartexture)
4433                 R_FreeTexture(r_shadow_prepasslightingspeculartexture);
4434         r_shadow_prepasslightingspeculartexture = NULL;
4435 }
4436
4437 void R_Shadow_DrawPrepass(void)
4438 {
4439         int i;
4440         int flag;
4441         int lnum;
4442         size_t lightindex;
4443         dlight_t *light;
4444         size_t range;
4445         entity_render_t *ent;
4446         float clearcolor[4];
4447
4448         R_Mesh_ResetTextureState();
4449         GL_DepthMask(true);
4450         GL_ColorMask(1,1,1,1);
4451         GL_BlendFunc(GL_ONE, GL_ZERO);
4452         GL_Color(1,1,1,1);
4453         GL_DepthTest(true);
4454         R_Mesh_SetRenderTargets(r_shadow_prepassgeometryfbo, r_shadow_prepassgeometrydepthbuffer, r_shadow_prepassgeometrynormalmaptexture, NULL, NULL, NULL);
4455         Vector4Set(clearcolor, 0.5f,0.5f,0.5f,1.0f);
4456         GL_Clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
4457         if (r_timereport_active)
4458                 R_TimeReport("prepasscleargeom");
4459
4460         if (cl.csqc_vidvars.drawworld && r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->DrawPrepass)
4461                 r_refdef.scene.worldmodel->DrawPrepass(r_refdef.scene.worldentity);
4462         if (r_timereport_active)
4463                 R_TimeReport("prepassworld");
4464
4465         for (i = 0;i < r_refdef.scene.numentities;i++)
4466         {
4467                 if (!r_refdef.viewcache.entityvisible[i])
4468                         continue;
4469                 ent = r_refdef.scene.entities[i];
4470                 if (ent->model && ent->model->DrawPrepass != NULL)
4471                         ent->model->DrawPrepass(ent);
4472         }
4473
4474         if (r_timereport_active)
4475                 R_TimeReport("prepassmodels");
4476
4477         GL_DepthMask(false);
4478         GL_ColorMask(1,1,1,1);
4479         GL_Color(1,1,1,1);
4480         GL_DepthTest(true);
4481         R_Mesh_SetRenderTargets(r_shadow_prepasslightingdiffusespecularfbo, r_shadow_prepassgeometrydepthbuffer, r_shadow_prepasslightingdiffusetexture, r_shadow_prepasslightingspeculartexture, NULL, NULL);
4482         Vector4Set(clearcolor, 0, 0, 0, 0);
4483         GL_Clear(GL_COLOR_BUFFER_BIT, clearcolor, 1.0f, 0);
4484         if (r_timereport_active)
4485                 R_TimeReport("prepassclearlit");
4486
4487         R_Shadow_RenderMode_Begin();
4488
4489         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
4490         if (r_shadow_debuglight.integer >= 0)
4491         {
4492                 lightindex = r_shadow_debuglight.integer;
4493                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4494                 if (light && (light->flags & flag) && light->rtlight.draw)
4495                         R_Shadow_DrawLight(&light->rtlight);
4496         }
4497         else
4498         {
4499                 range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4500                 for (lightindex = 0;lightindex < range;lightindex++)
4501                 {
4502                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4503                         if (light && (light->flags & flag) && light->rtlight.draw)
4504                                 R_Shadow_DrawLight(&light->rtlight);
4505                 }
4506         }
4507         if (r_refdef.scene.rtdlight)
4508                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
4509                         if (r_refdef.scene.lights[lnum]->draw)
4510                                 R_Shadow_DrawLight(r_refdef.scene.lights[lnum]);
4511
4512         R_Shadow_RenderMode_End();
4513
4514         if (r_timereport_active)
4515                 R_TimeReport("prepasslights");
4516 }
4517
4518 void R_Shadow_DrawLightSprites(void);
4519 void R_Shadow_PrepareLights(int fbo, rtexture_t *depthtexture, rtexture_t *colortexture)
4520 {
4521         int flag;
4522         int lnum;
4523         size_t lightindex;
4524         dlight_t *light;
4525         size_t range;
4526         float f;
4527
4528         if (r_shadow_shadowmapmaxsize != bound(1, r_shadow_shadowmapping_maxsize.integer, (int)vid.maxtexturesize_2d / 4) ||
4529                 (r_shadow_shadowmode != R_SHADOW_SHADOWMODE_STENCIL) != (r_shadow_shadowmapping.integer || r_shadow_deferred.integer) ||
4530                 r_shadow_shadowmapvsdct != (r_shadow_shadowmapping_vsdct.integer != 0 && vid.renderpath == RENDERPATH_GL20) ||
4531                 r_shadow_shadowmapfilterquality != r_shadow_shadowmapping_filterquality.integer ||
4532                 r_shadow_shadowmapshadowsampler != (vid.support.arb_shadow && r_shadow_shadowmapping_useshadowsampler.integer) ||
4533                 r_shadow_shadowmapdepthbits != r_shadow_shadowmapping_depthbits.integer ||
4534                 r_shadow_shadowmapborder != bound(0, r_shadow_shadowmapping_bordersize.integer, 16) ||
4535                 r_shadow_shadowmapdepthtexture != r_fb.usedepthtextures)
4536                 R_Shadow_FreeShadowMaps();
4537
4538         r_shadow_fb_fbo = fbo;
4539         r_shadow_fb_depthtexture = depthtexture;
4540         r_shadow_fb_colortexture = colortexture;
4541
4542         r_shadow_usingshadowmaportho = false;
4543
4544         switch (vid.renderpath)
4545         {
4546         case RENDERPATH_GL20:
4547         case RENDERPATH_D3D9:
4548         case RENDERPATH_D3D10:
4549         case RENDERPATH_D3D11:
4550         case RENDERPATH_SOFT:
4551 #ifndef USE_GLES2
4552                 if (!r_shadow_deferred.integer || r_shadow_shadowmode == R_SHADOW_SHADOWMODE_STENCIL || !vid.support.ext_framebuffer_object || vid.maxdrawbuffers < 2)
4553                 {
4554                         r_shadow_usingdeferredprepass = false;
4555                         if (r_shadow_prepass_width)
4556                                 R_Shadow_FreeDeferred();
4557                         r_shadow_prepass_width = r_shadow_prepass_height = 0;
4558                         break;
4559                 }
4560
4561                 if (r_shadow_prepass_width != vid.width || r_shadow_prepass_height != vid.height)
4562                 {
4563                         R_Shadow_FreeDeferred();
4564
4565                         r_shadow_usingdeferredprepass = true;
4566                         r_shadow_prepass_width = vid.width;
4567                         r_shadow_prepass_height = vid.height;
4568                         r_shadow_prepassgeometrydepthbuffer = R_LoadTextureRenderBuffer(r_shadow_texturepool, "prepassgeometrydepthbuffer", vid.width, vid.height, TEXTYPE_DEPTHBUFFER24);
4569                         r_shadow_prepassgeometrynormalmaptexture = R_LoadTexture2D(r_shadow_texturepool, "prepassgeometrynormalmap", vid.width, vid.height, NULL, TEXTYPE_COLORBUFFER32F, TEXF_RENDERTARGET | TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCENEAREST, -1, NULL);
4570                         r_shadow_prepasslightingdiffusetexture = R_LoadTexture2D(r_shadow_texturepool, "prepasslightingdiffuse", vid.width, vid.height, NULL, TEXTYPE_COLORBUFFER16F, TEXF_RENDERTARGET | TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCENEAREST, -1, NULL);
4571                         r_shadow_prepasslightingspeculartexture = R_LoadTexture2D(r_shadow_texturepool, "prepasslightingspecular", vid.width, vid.height, NULL, TEXTYPE_COLORBUFFER16F, TEXF_RENDERTARGET | TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCENEAREST, -1, NULL);
4572
4573                         // set up the geometry pass fbo (depth + normalmap)
4574                         r_shadow_prepassgeometryfbo = R_Mesh_CreateFramebufferObject(r_shadow_prepassgeometrydepthbuffer, r_shadow_prepassgeometrynormalmaptexture, NULL, NULL, NULL);
4575                         R_Mesh_SetRenderTargets(r_shadow_prepassgeometryfbo, r_shadow_prepassgeometrydepthbuffer, r_shadow_prepassgeometrynormalmaptexture, NULL, NULL, NULL);
4576                         // render depth into a renderbuffer and other important properties into the normalmap texture
4577
4578                         // set up the lighting pass fbo (diffuse + specular)
4579                         r_shadow_prepasslightingdiffusespecularfbo = R_Mesh_CreateFramebufferObject(r_shadow_prepassgeometrydepthbuffer, r_shadow_prepasslightingdiffusetexture, r_shadow_prepasslightingspeculartexture, NULL, NULL);
4580                         R_Mesh_SetRenderTargets(r_shadow_prepasslightingdiffusespecularfbo, r_shadow_prepassgeometrydepthbuffer, r_shadow_prepasslightingdiffusetexture, r_shadow_prepasslightingspeculartexture, NULL, NULL);
4581                         // render diffuse into one texture and specular into another,
4582                         // with depth and normalmap bound as textures,
4583                         // with depth bound as attachment as well
4584
4585                         // set up the lighting pass fbo (diffuse)
4586                         r_shadow_prepasslightingdiffusefbo = R_Mesh_CreateFramebufferObject(r_shadow_prepassgeometrydepthbuffer, r_shadow_prepasslightingdiffusetexture, NULL, NULL, NULL);
4587                         R_Mesh_SetRenderTargets(r_shadow_prepasslightingdiffusefbo, r_shadow_prepassgeometrydepthbuffer, r_shadow_prepasslightingdiffusetexture, NULL, NULL, NULL);
4588                         // render diffuse into one texture,
4589                         // with depth and normalmap bound as textures,
4590                         // with depth bound as attachment as well
4591                 }
4592 #endif
4593                 break;
4594         case RENDERPATH_GL11:
4595         case RENDERPATH_GL13:
4596         case RENDERPATH_GLES1:
4597         case RENDERPATH_GLES2:
4598                 r_shadow_usingdeferredprepass = false;
4599                 break;
4600         }
4601
4602         R_Shadow_EnlargeLeafSurfaceTrisBuffer(r_refdef.scene.worldmodel->brush.num_leafs, r_refdef.scene.worldmodel->num_surfaces, r_refdef.scene.worldmodel->brush.shadowmesh ? r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles : r_refdef.scene.worldmodel->surfmesh.num_triangles, r_refdef.scene.worldmodel->surfmesh.num_triangles);
4603
4604         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
4605         if (r_shadow_debuglight.integer >= 0)
4606         {
4607                 lightindex = r_shadow_debuglight.integer;
4608                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4609                 if (light)
4610                         R_Shadow_PrepareLight(&light->rtlight);
4611         }
4612         else
4613         {
4614                 range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4615                 for (lightindex = 0;lightindex < range;lightindex++)
4616                 {
4617                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4618                         if (light && (light->flags & flag))
4619                                 R_Shadow_PrepareLight(&light->rtlight);
4620                 }
4621         }
4622         if (r_refdef.scene.rtdlight)
4623         {
4624                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
4625                         R_Shadow_PrepareLight(r_refdef.scene.lights[lnum]);
4626         }
4627         else if(gl_flashblend.integer)
4628         {
4629                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
4630                 {
4631                         rtlight_t *rtlight = r_refdef.scene.lights[lnum];
4632                         f = (rtlight->style >= 0 ? r_refdef.scene.lightstylevalue[rtlight->style] : 1) * r_shadow_lightintensityscale.value;
4633                         VectorScale(rtlight->color, f, rtlight->currentcolor);
4634                 }
4635         }
4636
4637         if (r_editlights.integer)
4638                 R_Shadow_DrawLightSprites();
4639 }
4640
4641 void R_Shadow_DrawLights(void)
4642 {
4643         int flag;
4644         int lnum;
4645         size_t lightindex;
4646         dlight_t *light;
4647         size_t range;
4648
4649         R_Shadow_RenderMode_Begin();
4650
4651         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
4652         if (r_shadow_debuglight.integer >= 0)
4653         {
4654                 lightindex = r_shadow_debuglight.integer;
4655                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4656                 if (light)
4657                         R_Shadow_DrawLight(&light->rtlight);
4658         }
4659         else
4660         {
4661                 range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4662                 for (lightindex = 0;lightindex < range;lightindex++)
4663                 {
4664                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4665                         if (light && (light->flags & flag))
4666                                 R_Shadow_DrawLight(&light->rtlight);
4667                 }
4668         }
4669         if (r_refdef.scene.rtdlight)
4670                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
4671                         R_Shadow_DrawLight(r_refdef.scene.lights[lnum]);
4672
4673         R_Shadow_RenderMode_End();
4674 }
4675
4676 #define MAX_MODELSHADOWS 1024
4677 static int r_shadow_nummodelshadows;
4678 static entity_render_t *r_shadow_modelshadows[MAX_MODELSHADOWS];
4679
4680 void R_Shadow_PrepareModelShadows(void)
4681 {
4682         int i;
4683         float scale, size, radius, dot1, dot2;
4684         prvm_vec3_t prvmshadowdir, prvmshadowfocus;
4685         vec3_t shadowdir, shadowforward, shadowright, shadoworigin, shadowfocus, shadowmins, shadowmaxs;
4686         entity_render_t *ent;
4687
4688         r_shadow_nummodelshadows = 0;
4689         if (!r_refdef.scene.numentities)
4690                 return;
4691
4692         switch (r_shadow_shadowmode)
4693         {
4694         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
4695                 if (r_shadows.integer >= 2)
4696                         break;
4697                 // fall through
4698         case R_SHADOW_SHADOWMODE_STENCIL:
4699                 if (!vid.stencil)
4700                         return;
4701                 for (i = 0;i < r_refdef.scene.numentities;i++)
4702                 {
4703                         ent = r_refdef.scene.entities[i];
4704                         if (ent->model && ent->model->DrawShadowVolume != NULL && (!ent->model->brush.submodel || r_shadows_castfrombmodels.integer) && (ent->flags & RENDER_SHADOW))
4705                         {
4706                                 if (r_shadow_nummodelshadows >= MAX_MODELSHADOWS)
4707                                         break;
4708                                 r_shadow_modelshadows[r_shadow_nummodelshadows++] = ent;
4709                                 R_AnimCache_GetEntity(ent, false, false);
4710                         }
4711                 }
4712                 return;
4713         default:
4714                 return;
4715         }
4716
4717         size = 2*r_shadow_shadowmapmaxsize;
4718         scale = r_shadow_shadowmapping_precision.value * r_shadows_shadowmapscale.value;
4719         radius = 0.5f * size / scale;
4720
4721         Math_atov(r_shadows_throwdirection.string, prvmshadowdir);
4722         VectorCopy(prvmshadowdir, shadowdir);
4723         VectorNormalize(shadowdir);
4724         dot1 = DotProduct(r_refdef.view.forward, shadowdir);
4725         dot2 = DotProduct(r_refdef.view.up, shadowdir);
4726         if (fabs(dot1) <= fabs(dot2))
4727                 VectorMA(r_refdef.view.forward, -dot1, shadowdir, shadowforward);
4728         else
4729                 VectorMA(r_refdef.view.up, -dot2, shadowdir, shadowforward);
4730         VectorNormalize(shadowforward);
4731         CrossProduct(shadowdir, shadowforward, shadowright);
4732         Math_atov(r_shadows_focus.string, prvmshadowfocus);
4733         VectorCopy(prvmshadowfocus, shadowfocus);
4734         VectorM(shadowfocus[0], r_refdef.view.right, shadoworigin);
4735         VectorMA(shadoworigin, shadowfocus[1], r_refdef.view.up, shadoworigin);
4736         VectorMA(shadoworigin, -shadowfocus[2], r_refdef.view.forward, shadoworigin);
4737         VectorAdd(shadoworigin, r_refdef.view.origin, shadoworigin);
4738         if (shadowfocus[0] || shadowfocus[1] || shadowfocus[2])
4739                 dot1 = 1;
4740         VectorMA(shadoworigin, (1.0f - fabs(dot1)) * radius, shadowforward, shadoworigin);
4741
4742         shadowmins[0] = shadoworigin[0] - r_shadows_throwdistance.value * fabs(shadowdir[0]) - radius * (fabs(shadowforward[0]) + fabs(shadowright[0]));
4743         shadowmins[1] = shadoworigin[1] - r_shadows_throwdistance.value * fabs(shadowdir[1]) - radius * (fabs(shadowforward[1]) + fabs(shadowright[1]));
4744         shadowmins[2] = shadoworigin[2] - r_shadows_throwdistance.value * fabs(shadowdir[2]) - radius * (fabs(shadowforward[2]) + fabs(shadowright[2]));
4745         shadowmaxs[0] = shadoworigin[0] + r_shadows_throwdistance.value * fabs(shadowdir[0]) + radius * (fabs(shadowforward[0]) + fabs(shadowright[0]));
4746         shadowmaxs[1] = shadoworigin[1] + r_shadows_throwdistance.value * fabs(shadowdir[1]) + radius * (fabs(shadowforward[1]) + fabs(shadowright[1]));
4747         shadowmaxs[2] = shadoworigin[2] + r_shadows_throwdistance.value * fabs(shadowdir[2]) + radius * (fabs(shadowforward[2]) + fabs(shadowright[2]));
4748
4749         for (i = 0;i < r_refdef.scene.numentities;i++)
4750         {
4751                 ent = r_refdef.scene.entities[i];
4752                 if (!BoxesOverlap(ent->mins, ent->maxs, shadowmins, shadowmaxs))
4753                         continue;
4754                 // cast shadows from anything of the map (submodels are optional)
4755                 if (ent->model && ent->model->DrawShadowMap != NULL && (!ent->model->brush.submodel || r_shadows_castfrombmodels.integer) && (ent->flags & RENDER_SHADOW))
4756                 {
4757                         if (r_shadow_nummodelshadows >= MAX_MODELSHADOWS)
4758                                 break;
4759                         r_shadow_modelshadows[r_shadow_nummodelshadows++] = ent;
4760                         R_AnimCache_GetEntity(ent, false, false);
4761                 }
4762         }
4763 }
4764
4765 void R_DrawModelShadowMaps(int fbo, rtexture_t *depthtexture, rtexture_t *colortexture)
4766 {
4767         int i;
4768         float relativethrowdistance, scale, size, radius, nearclip, farclip, bias, dot1, dot2;
4769         entity_render_t *ent;
4770         vec3_t relativelightorigin;
4771         vec3_t relativelightdirection, relativeforward, relativeright;
4772         vec3_t relativeshadowmins, relativeshadowmaxs;
4773         vec3_t shadowdir, shadowforward, shadowright, shadoworigin, shadowfocus;
4774         prvm_vec3_t prvmshadowdir, prvmshadowfocus;
4775         float m[12];
4776         matrix4x4_t shadowmatrix, cameramatrix, mvpmatrix, invmvpmatrix, scalematrix, texmatrix;
4777         r_viewport_t viewport;
4778         GLuint shadowfbo = 0;
4779         float clearcolor[4];
4780
4781         if (!r_shadow_nummodelshadows)
4782                 return;
4783
4784         switch (r_shadow_shadowmode)
4785         {
4786         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
4787                 break;
4788         default:
4789                 return;
4790         }
4791
4792         r_shadow_fb_fbo = fbo;
4793         r_shadow_fb_depthtexture = depthtexture;
4794         r_shadow_fb_colortexture = colortexture;
4795
4796         R_ResetViewRendering3D(fbo, depthtexture, colortexture);
4797         R_Shadow_RenderMode_Begin();
4798         R_Shadow_RenderMode_ActiveLight(NULL);
4799
4800         switch (r_shadow_shadowmode)
4801         {
4802         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
4803                 if (!r_shadow_shadowmap2ddepthtexture)
4804                         R_Shadow_MakeShadowMap(0, r_shadow_shadowmapmaxsize);
4805                 shadowfbo = r_shadow_fbo2d;
4806                 r_shadow_shadowmap_texturescale[0] = 1.0f / R_TextureWidth(r_shadow_shadowmap2ddepthtexture);
4807                 r_shadow_shadowmap_texturescale[1] = 1.0f / R_TextureHeight(r_shadow_shadowmap2ddepthtexture);
4808                 r_shadow_rendermode = R_SHADOW_RENDERMODE_SHADOWMAP2D;
4809                 break;
4810         default:
4811                 break;
4812         }
4813
4814         size = 2*r_shadow_shadowmapmaxsize;
4815         scale = (r_shadow_shadowmapping_precision.value * r_shadows_shadowmapscale.value) / size;
4816         radius = 0.5f / scale;
4817         nearclip = -r_shadows_throwdistance.value;
4818         farclip = r_shadows_throwdistance.value;
4819         bias = (r_shadows_shadowmapbias.value < 0) ? r_shadow_shadowmapping_bias.value : r_shadows_shadowmapbias.value * r_shadow_shadowmapping_nearclip.value / (2 * r_shadows_throwdistance.value) * (1024.0f / size);
4820
4821         r_shadow_shadowmap_parameters[0] = size;
4822         r_shadow_shadowmap_parameters[1] = size;
4823         r_shadow_shadowmap_parameters[2] = 1.0;
4824         r_shadow_shadowmap_parameters[3] = bound(0.0f, 1.0f - r_shadows_darken.value, 1.0f);
4825
4826         Math_atov(r_shadows_throwdirection.string, prvmshadowdir);
4827         VectorCopy(prvmshadowdir, shadowdir);
4828         VectorNormalize(shadowdir);
4829         Math_atov(r_shadows_focus.string, prvmshadowfocus);
4830         VectorCopy(prvmshadowfocus, shadowfocus);
4831         VectorM(shadowfocus[0], r_refdef.view.right, shadoworigin);
4832         VectorMA(shadoworigin, shadowfocus[1], r_refdef.view.up, shadoworigin);
4833         VectorMA(shadoworigin, -shadowfocus[2], r_refdef.view.forward, shadoworigin);
4834         VectorAdd(shadoworigin, r_refdef.view.origin, shadoworigin);
4835         dot1 = DotProduct(r_refdef.view.forward, shadowdir);
4836         dot2 = DotProduct(r_refdef.view.up, shadowdir);
4837         if (fabs(dot1) <= fabs(dot2))
4838                 VectorMA(r_refdef.view.forward, -dot1, shadowdir, shadowforward);
4839         else
4840                 VectorMA(r_refdef.view.up, -dot2, shadowdir, shadowforward);
4841         VectorNormalize(shadowforward);
4842         VectorM(scale, shadowforward, &m[0]);
4843         if (shadowfocus[0] || shadowfocus[1] || shadowfocus[2])
4844                 dot1 = 1;
4845         m[3] = fabs(dot1) * 0.5f - DotProduct(shadoworigin, &m[0]);
4846         CrossProduct(shadowdir, shadowforward, shadowright);
4847         VectorM(scale, shadowright, &m[4]);
4848         m[7] = 0.5f - DotProduct(shadoworigin, &m[4]);
4849         VectorM(1.0f / (farclip - nearclip), shadowdir, &m[8]);
4850         m[11] = 0.5f - DotProduct(shadoworigin, &m[8]);
4851         Matrix4x4_FromArray12FloatD3D(&shadowmatrix, m);
4852         Matrix4x4_Invert_Full(&cameramatrix, &shadowmatrix);
4853         R_Viewport_InitOrtho(&viewport, &cameramatrix, 0, 0, size, size, 0, 0, 1, 1, 0, -1, NULL);
4854
4855         VectorMA(shadoworigin, (1.0f - fabs(dot1)) * radius, shadowforward, shadoworigin);
4856
4857         if (r_shadow_shadowmap2ddepthbuffer)
4858                 R_Mesh_SetRenderTargets(shadowfbo, r_shadow_shadowmap2ddepthbuffer, r_shadow_shadowmap2ddepthtexture, NULL, NULL, NULL);
4859         else
4860                 R_Mesh_SetRenderTargets(shadowfbo, r_shadow_shadowmap2ddepthtexture, NULL, NULL, NULL, NULL);
4861         R_SetupShader_DepthOrShadow(true, r_shadow_shadowmap2ddepthbuffer != NULL, false); // FIXME test if we have a skeletal model?
4862         GL_PolygonOffset(r_shadow_shadowmapping_polygonfactor.value, r_shadow_shadowmapping_polygonoffset.value);
4863         GL_DepthMask(true);
4864         GL_DepthTest(true);
4865         R_SetViewport(&viewport);
4866         GL_Scissor(viewport.x, viewport.y, min(viewport.width + r_shadow_shadowmapborder, 2*r_shadow_shadowmapmaxsize), viewport.height + r_shadow_shadowmapborder);
4867         Vector4Set(clearcolor, 1,1,1,1);
4868         // in D3D9 we have to render to a color texture shadowmap
4869         // in GL we render directly to a depth texture only
4870         if (r_shadow_shadowmap2ddepthbuffer)
4871                 GL_Clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
4872         else
4873                 GL_Clear(GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
4874         // render into a slightly restricted region so that the borders of the
4875         // shadowmap area fade away, rather than streaking across everything
4876         // outside the usable area
4877         GL_Scissor(viewport.x + r_shadow_shadowmapborder, viewport.y + r_shadow_shadowmapborder, viewport.width - 2*r_shadow_shadowmapborder, viewport.height - 2*r_shadow_shadowmapborder);
4878
4879         for (i = 0;i < r_shadow_nummodelshadows;i++)
4880         {
4881                 ent = r_shadow_modelshadows[i];
4882                 relativethrowdistance = r_shadows_throwdistance.value * Matrix4x4_ScaleFromMatrix(&ent->inversematrix);
4883                 Matrix4x4_Transform(&ent->inversematrix, shadoworigin, relativelightorigin);
4884                 Matrix4x4_Transform3x3(&ent->inversematrix, shadowdir, relativelightdirection);
4885                 Matrix4x4_Transform3x3(&ent->inversematrix, shadowforward, relativeforward);
4886                 Matrix4x4_Transform3x3(&ent->inversematrix, shadowright, relativeright);
4887                 relativeshadowmins[0] = relativelightorigin[0] - r_shadows_throwdistance.value * fabs(relativelightdirection[0]) - radius * (fabs(relativeforward[0]) + fabs(relativeright[0]));
4888                 relativeshadowmins[1] = relativelightorigin[1] - r_shadows_throwdistance.value * fabs(relativelightdirection[1]) - radius * (fabs(relativeforward[1]) + fabs(relativeright[1]));
4889                 relativeshadowmins[2] = relativelightorigin[2] - r_shadows_throwdistance.value * fabs(relativelightdirection[2]) - radius * (fabs(relativeforward[2]) + fabs(relativeright[2]));
4890                 relativeshadowmaxs[0] = relativelightorigin[0] + r_shadows_throwdistance.value * fabs(relativelightdirection[0]) + radius * (fabs(relativeforward[0]) + fabs(relativeright[0]));
4891                 relativeshadowmaxs[1] = relativelightorigin[1] + r_shadows_throwdistance.value * fabs(relativelightdirection[1]) + radius * (fabs(relativeforward[1]) + fabs(relativeright[1]));
4892                 relativeshadowmaxs[2] = relativelightorigin[2] + r_shadows_throwdistance.value * fabs(relativelightdirection[2]) + radius * (fabs(relativeforward[2]) + fabs(relativeright[2]));
4893                 RSurf_ActiveModelEntity(ent, false, false, false);
4894                 ent->model->DrawShadowMap(0, ent, relativelightorigin, relativelightdirection, relativethrowdistance, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, NULL, relativeshadowmins, relativeshadowmaxs);
4895                 rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
4896         }
4897
4898 #if 0
4899         if (r_test.integer)
4900         {
4901                 unsigned char *rawpixels = Z_Malloc(viewport.width*viewport.height*4);
4902                 CHECKGLERROR
4903                 qglReadPixels(viewport.x, viewport.y, viewport.width, viewport.height, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, rawpixels);
4904                 CHECKGLERROR
4905                 Image_WriteTGABGRA("r_shadows_2.tga", viewport.width, viewport.height, rawpixels);
4906                 Cvar_SetValueQuick(&r_test, 0);
4907                 Z_Free(rawpixels);
4908         }
4909 #endif
4910
4911         R_Shadow_RenderMode_End();
4912
4913         Matrix4x4_Concat(&mvpmatrix, &r_refdef.view.viewport.projectmatrix, &r_refdef.view.viewport.viewmatrix);
4914         Matrix4x4_Invert_Full(&invmvpmatrix, &mvpmatrix);
4915         Matrix4x4_CreateScale3(&scalematrix, size, -size, 1);
4916         Matrix4x4_AdjustOrigin(&scalematrix, 0, size, -0.5f * bias);
4917         Matrix4x4_Concat(&texmatrix, &scalematrix, &shadowmatrix);
4918         Matrix4x4_Concat(&r_shadow_shadowmapmatrix, &texmatrix, &invmvpmatrix);
4919
4920         switch (vid.renderpath)
4921         {
4922         case RENDERPATH_GL11:
4923         case RENDERPATH_GL13:
4924         case RENDERPATH_GL20:
4925         case RENDERPATH_SOFT:
4926         case RENDERPATH_GLES1:
4927         case RENDERPATH_GLES2:
4928                 break;
4929         case RENDERPATH_D3D9:
4930         case RENDERPATH_D3D10:
4931         case RENDERPATH_D3D11:
4932 #ifdef MATRIX4x4_OPENGLORIENTATION
4933                 r_shadow_shadowmapmatrix.m[0][0]        *= -1.0f;
4934                 r_shadow_shadowmapmatrix.m[0][1]        *= -1.0f;
4935                 r_shadow_shadowmapmatrix.m[0][2]        *= -1.0f;
4936                 r_shadow_shadowmapmatrix.m[0][3]        *= -1.0f;
4937 #else
4938                 r_shadow_shadowmapmatrix.m[0][0]        *= -1.0f;
4939                 r_shadow_shadowmapmatrix.m[1][0]        *= -1.0f;
4940                 r_shadow_shadowmapmatrix.m[2][0]        *= -1.0f;
4941                 r_shadow_shadowmapmatrix.m[3][0]        *= -1.0f;
4942 #endif
4943                 break;
4944         }
4945
4946         r_shadow_usingshadowmaportho = true;
4947         switch (r_shadow_shadowmode)
4948         {
4949         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
4950                 r_shadow_usingshadowmap2d = true;
4951                 break;
4952         default:
4953                 break;
4954         }
4955 }
4956
4957 void R_DrawModelShadows(int fbo, rtexture_t *depthtexture, rtexture_t *colortexture)
4958 {
4959         int i;
4960         float relativethrowdistance;
4961         entity_render_t *ent;
4962         vec3_t relativelightorigin;
4963         vec3_t relativelightdirection;
4964         vec3_t relativeshadowmins, relativeshadowmaxs;
4965         vec3_t tmp, shadowdir;
4966         prvm_vec3_t prvmshadowdir;
4967
4968         if (!r_shadow_nummodelshadows || (r_shadow_shadowmode != R_SHADOW_SHADOWMODE_STENCIL && r_shadows.integer != 1))
4969                 return;
4970
4971         r_shadow_fb_fbo = fbo;
4972         r_shadow_fb_depthtexture = depthtexture;
4973         r_shadow_fb_colortexture = colortexture;
4974
4975         R_ResetViewRendering3D(fbo, depthtexture, colortexture);
4976         //GL_Scissor(r_refdef.view.viewport.x, r_refdef.view.viewport.y, r_refdef.view.viewport.width, r_refdef.view.viewport.height);
4977         //GL_Scissor(r_refdef.view.x, vid.height - r_refdef.view.height - r_refdef.view.y, r_refdef.view.width, r_refdef.view.height);
4978         R_Shadow_RenderMode_Begin();
4979         R_Shadow_RenderMode_ActiveLight(NULL);
4980         r_shadow_lightscissor[0] = r_refdef.view.x;
4981         r_shadow_lightscissor[1] = vid.height - r_refdef.view.y - r_refdef.view.height;
4982         r_shadow_lightscissor[2] = r_refdef.view.width;
4983         r_shadow_lightscissor[3] = r_refdef.view.height;
4984         R_Shadow_RenderMode_StencilShadowVolumes(false);
4985
4986         // get shadow dir
4987         if (r_shadows.integer == 2)
4988         {
4989                 Math_atov(r_shadows_throwdirection.string, prvmshadowdir);
4990                 VectorCopy(prvmshadowdir, shadowdir);
4991                 VectorNormalize(shadowdir);
4992         }
4993
4994         R_Shadow_ClearStencil();
4995
4996         for (i = 0;i < r_shadow_nummodelshadows;i++)
4997         {
4998                 ent = r_shadow_modelshadows[i];
4999
5000                 // cast shadows from anything of the map (submodels are optional)
5001                 relativethrowdistance = r_shadows_throwdistance.value * Matrix4x4_ScaleFromMatrix(&ent->inversematrix);
5002                 VectorSet(relativeshadowmins, -relativethrowdistance, -relativethrowdistance, -relativethrowdistance);
5003                 VectorSet(relativeshadowmaxs, relativethrowdistance, relativethrowdistance, relativethrowdistance);
5004                 if (r_shadows.integer == 2) // 2: simpler mode, throw shadows always in same direction
5005                         Matrix4x4_Transform3x3(&ent->inversematrix, shadowdir, relativelightdirection);
5006                 else
5007                 {
5008                         if(ent->entitynumber != 0)
5009                         {
5010                                 if(ent->entitynumber >= MAX_EDICTS) // csqc entity
5011                                 {
5012                                         // FIXME handle this
5013                                         VectorNegate(ent->modellight_lightdir, relativelightdirection);
5014                                 }
5015                                 else
5016                                 {
5017                                         // networked entity - might be attached in some way (then we should use the parent's light direction, to not tear apart attached entities)
5018                                         int entnum, entnum2, recursion;
5019                                         entnum = entnum2 = ent->entitynumber;
5020                                         for(recursion = 32; recursion > 0; --recursion)
5021                                         {
5022                                                 entnum2 = cl.entities[entnum].state_current.tagentity;
5023                                                 if(entnum2 >= 1 && entnum2 < cl.num_entities && cl.entities_active[entnum2])
5024                                                         entnum = entnum2;
5025                                                 else
5026                                                         break;
5027                                         }
5028                                         if(recursion && recursion != 32) // if we followed a valid non-empty attachment chain
5029                                         {
5030                                                 VectorNegate(cl.entities[entnum].render.modellight_lightdir, relativelightdirection);
5031                                                 // transform into modelspace of OUR entity
5032                                                 Matrix4x4_Transform3x3(&cl.entities[entnum].render.matrix, relativelightdirection, tmp);
5033                                                 Matrix4x4_Transform3x3(&ent->inversematrix, tmp, relativelightdirection);
5034                                         }
5035                                         else
5036                                                 VectorNegate(ent->modellight_lightdir, relativelightdirection);
5037                                 }
5038                         }
5039                         else
5040                                 VectorNegate(ent->modellight_lightdir, relativelightdirection);
5041                 }
5042
5043                 VectorScale(relativelightdirection, -relativethrowdistance, relativelightorigin);
5044                 RSurf_ActiveModelEntity(ent, false, false, false);
5045                 ent->model->DrawShadowVolume(ent, relativelightorigin, relativelightdirection, relativethrowdistance, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, relativeshadowmins, relativeshadowmaxs);
5046                 rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
5047         }
5048
5049         // not really the right mode, but this will disable any silly stencil features
5050         R_Shadow_RenderMode_End();
5051
5052         // set up ortho view for rendering this pass
5053         //GL_Scissor(r_refdef.view.x, vid.height - r_refdef.view.height - r_refdef.view.y, r_refdef.view.width, r_refdef.view.height);
5054         //GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
5055         //GL_ScissorTest(true);
5056         //R_EntityMatrix(&identitymatrix);
5057         //R_Mesh_ResetTextureState();
5058         R_ResetViewRendering2D(fbo, depthtexture, colortexture);
5059
5060         // set up a darkening blend on shadowed areas
5061         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
5062         //GL_DepthRange(0, 1);
5063         //GL_DepthTest(false);
5064         //GL_DepthMask(false);
5065         //GL_PolygonOffset(0, 0);CHECKGLERROR
5066         GL_Color(0, 0, 0, r_shadows_darken.value);
5067         //GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
5068         //GL_DepthFunc(GL_ALWAYS);
5069         R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_KEEP, GL_NOTEQUAL, 128, 255);
5070
5071         // apply the blend to the shadowed areas
5072         R_Mesh_PrepareVertices_Generic_Arrays(4, r_screenvertex3f, NULL, NULL);
5073         R_SetupShader_Generic_NoTexture(false, true);
5074         R_Mesh_Draw(0, 4, 0, 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
5075
5076         // restore the viewport
5077         R_SetViewport(&r_refdef.view.viewport);
5078
5079         // restore other state to normal
5080         //R_Shadow_RenderMode_End();
5081 }
5082
5083 static void R_BeginCoronaQuery(rtlight_t *rtlight, float scale, qboolean usequery)
5084 {
5085         float zdist;
5086         vec3_t centerorigin;
5087 #if defined(GL_SAMPLES_PASSED_ARB) && !defined(USE_GLES2)
5088         float vertex3f[12];
5089 #endif
5090         // if it's too close, skip it
5091         if (VectorLength(rtlight->currentcolor) < (1.0f / 256.0f))
5092                 return;
5093         zdist = (DotProduct(rtlight->shadoworigin, r_refdef.view.forward) - DotProduct(r_refdef.view.origin, r_refdef.view.forward));
5094         if (zdist < 32)
5095                 return;
5096         if (usequery && r_numqueries + 2 <= r_maxqueries)
5097         {
5098                 rtlight->corona_queryindex_allpixels = r_queries[r_numqueries++];
5099                 rtlight->corona_queryindex_visiblepixels = r_queries[r_numqueries++];
5100                 // we count potential samples in the middle of the screen, we count actual samples at the light location, this allows counting potential samples of off-screen lights
5101                 VectorMA(r_refdef.view.origin, zdist, r_refdef.view.forward, centerorigin);
5102
5103                 switch(vid.renderpath)
5104                 {
5105                 case RENDERPATH_GL11:
5106                 case RENDERPATH_GL13:
5107                 case RENDERPATH_GL20:
5108                 case RENDERPATH_GLES1:
5109                 case RENDERPATH_GLES2:
5110 #if defined(GL_SAMPLES_PASSED_ARB) && !defined(USE_GLES2)
5111                         CHECKGLERROR
5112                         // NOTE: GL_DEPTH_TEST must be enabled or ATI won't count samples, so use GL_DepthFunc instead
5113                         qglBeginQueryARB(GL_SAMPLES_PASSED_ARB, rtlight->corona_queryindex_allpixels);
5114                         GL_DepthFunc(GL_ALWAYS);
5115                         R_CalcSprite_Vertex3f(vertex3f, centerorigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale);
5116                         R_Mesh_PrepareVertices_Vertex3f(4, vertex3f, NULL, 0);
5117                         R_Mesh_Draw(0, 4, 0, 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
5118                         qglEndQueryARB(GL_SAMPLES_PASSED_ARB);
5119                         GL_DepthFunc(GL_LEQUAL);
5120                         qglBeginQueryARB(GL_SAMPLES_PASSED_ARB, rtlight->corona_queryindex_visiblepixels);
5121                         R_CalcSprite_Vertex3f(vertex3f, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale);
5122                         R_Mesh_PrepareVertices_Vertex3f(4, vertex3f, NULL, 0);
5123                         R_Mesh_Draw(0, 4, 0, 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
5124                         qglEndQueryARB(GL_SAMPLES_PASSED_ARB);
5125                         CHECKGLERROR
5126 #endif
5127                         break;
5128                 case RENDERPATH_D3D9:
5129                         Con_DPrintf("FIXME D3D9 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5130                         break;
5131                 case RENDERPATH_D3D10:
5132                         Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5133                         break;
5134                 case RENDERPATH_D3D11:
5135                         Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5136                         break;
5137                 case RENDERPATH_SOFT:
5138                         //Con_DPrintf("FIXME SOFT %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5139                         break;
5140                 }
5141         }
5142         rtlight->corona_visibility = bound(0, (zdist - 32) / 32, 1);
5143 }
5144
5145 static float spritetexcoord2f[4*2] = {0, 1, 0, 0, 1, 0, 1, 1};
5146
5147 static void R_DrawCorona(rtlight_t *rtlight, float cscale, float scale)
5148 {
5149         vec3_t color;
5150         GLint allpixels = 0, visiblepixels = 0;
5151         // now we have to check the query result
5152         if (rtlight->corona_queryindex_visiblepixels)
5153         {
5154                 switch(vid.renderpath)
5155                 {
5156                 case RENDERPATH_GL11:
5157                 case RENDERPATH_GL13:
5158                 case RENDERPATH_GL20:
5159                 case RENDERPATH_GLES1:
5160                 case RENDERPATH_GLES2:
5161 #if defined(GL_SAMPLES_PASSED_ARB) && !defined(USE_GLES2)
5162                         CHECKGLERROR
5163                         qglGetQueryObjectivARB(rtlight->corona_queryindex_visiblepixels, GL_QUERY_RESULT_ARB, &visiblepixels);
5164                         qglGetQueryObjectivARB(rtlight->corona_queryindex_allpixels, GL_QUERY_RESULT_ARB, &allpixels);
5165                         CHECKGLERROR
5166 #endif
5167                         break;
5168                 case RENDERPATH_D3D9:
5169                         Con_DPrintf("FIXME D3D9 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5170                         break;
5171                 case RENDERPATH_D3D10:
5172                         Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5173                         break;
5174                 case RENDERPATH_D3D11:
5175                         Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5176                         break;
5177                 case RENDERPATH_SOFT:
5178                         //Con_DPrintf("FIXME SOFT %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5179                         break;
5180                 }
5181                 //Con_Printf("%i of %i pixels\n", (int)visiblepixels, (int)allpixels);
5182                 if (visiblepixels < 1 || allpixels < 1)
5183                         return;
5184                 rtlight->corona_visibility *= bound(0, (float)visiblepixels / (float)allpixels, 1);
5185                 cscale *= rtlight->corona_visibility;
5186         }
5187         else
5188         {
5189                 // FIXME: these traces should scan all render entities instead of cl.world
5190                 if (CL_TraceLine(r_refdef.view.origin, rtlight->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true).fraction < 1)
5191                         return;
5192         }
5193         VectorScale(rtlight->currentcolor, cscale, color);
5194         if (VectorLength(color) > (1.0f / 256.0f))
5195         {
5196                 float vertex3f[12];
5197                 qboolean negated = (color[0] + color[1] + color[2] < 0) && vid.support.ext_blend_subtract;
5198                 if(negated)
5199                 {
5200                         VectorNegate(color, color);
5201                         GL_BlendEquationSubtract(true);
5202                 }
5203                 R_CalcSprite_Vertex3f(vertex3f, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale);
5204                 RSurf_ActiveCustomEntity(&identitymatrix, &identitymatrix, RENDER_NODEPTHTEST, 0, color[0], color[1], color[2], 1, 4, vertex3f, spritetexcoord2f, NULL, NULL, NULL, NULL, 2, polygonelement3i, polygonelement3s, false, false);
5205                 R_DrawCustomSurface(r_shadow_lightcorona, &identitymatrix, MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE | MATERIALFLAG_NODEPTHTEST, 0, 4, 0, 2, false, false);
5206                 if(negated)
5207                         GL_BlendEquationSubtract(false);
5208         }
5209 }
5210
5211 void R_Shadow_DrawCoronas(void)
5212 {
5213         int i, flag;
5214         qboolean usequery = false;
5215         size_t lightindex;
5216         dlight_t *light;
5217         rtlight_t *rtlight;
5218         size_t range;
5219         if (r_coronas.value < (1.0f / 256.0f) && !gl_flashblend.integer)
5220                 return;
5221         if (r_fb.water.renderingscene)
5222                 return;
5223         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
5224         R_EntityMatrix(&identitymatrix);
5225
5226         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
5227
5228         // check occlusion of coronas
5229         // use GL_ARB_occlusion_query if available
5230         // otherwise use raytraces
5231         r_numqueries = 0;
5232         switch (vid.renderpath)
5233         {
5234         case RENDERPATH_GL11:
5235         case RENDERPATH_GL13:
5236         case RENDERPATH_GL20:
5237         case RENDERPATH_GLES1:
5238         case RENDERPATH_GLES2:
5239                 usequery = vid.support.arb_occlusion_query && r_coronas_occlusionquery.integer;
5240 #if defined(GL_SAMPLES_PASSED_ARB) && !defined(USE_GLES2)
5241                 if (usequery)
5242                 {
5243                         GL_ColorMask(0,0,0,0);
5244                         if (r_maxqueries < (range + r_refdef.scene.numlights) * 2)
5245                         if (r_maxqueries < MAX_OCCLUSION_QUERIES)
5246                         {
5247                                 i = r_maxqueries;
5248                                 r_maxqueries = (range + r_refdef.scene.numlights) * 4;
5249                                 r_maxqueries = min(r_maxqueries, MAX_OCCLUSION_QUERIES);
5250                                 CHECKGLERROR
5251                                 qglGenQueriesARB(r_maxqueries - i, r_queries + i);
5252                                 CHECKGLERROR
5253                         }
5254                         RSurf_ActiveWorldEntity();
5255                         GL_BlendFunc(GL_ONE, GL_ZERO);
5256                         GL_CullFace(GL_NONE);
5257                         GL_DepthMask(false);
5258                         GL_DepthRange(0, 1);
5259                         GL_PolygonOffset(0, 0);
5260                         GL_DepthTest(true);
5261                         R_Mesh_ResetTextureState();
5262                         R_SetupShader_Generic_NoTexture(false, false);
5263                 }
5264 #endif
5265                 break;
5266         case RENDERPATH_D3D9:
5267                 usequery = false;
5268                 //Con_DPrintf("FIXME D3D9 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5269                 break;
5270         case RENDERPATH_D3D10:
5271                 Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5272                 break;
5273         case RENDERPATH_D3D11:
5274                 Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5275                 break;
5276         case RENDERPATH_SOFT:
5277                 usequery = false;
5278                 //Con_DPrintf("FIXME SOFT %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5279                 break;
5280         }
5281         for (lightindex = 0;lightindex < range;lightindex++)
5282         {
5283                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5284                 if (!light)
5285                         continue;
5286                 rtlight = &light->rtlight;
5287                 rtlight->corona_visibility = 0;
5288                 rtlight->corona_queryindex_visiblepixels = 0;
5289                 rtlight->corona_queryindex_allpixels = 0;
5290                 if (!(rtlight->flags & flag))
5291                         continue;
5292                 if (rtlight->corona <= 0)
5293                         continue;
5294                 if (r_shadow_debuglight.integer >= 0 && r_shadow_debuglight.integer != (int)lightindex)
5295                         continue;
5296                 R_BeginCoronaQuery(rtlight, rtlight->radius * rtlight->coronasizescale * r_coronas_occlusionsizescale.value, usequery);
5297         }
5298         for (i = 0;i < r_refdef.scene.numlights;i++)
5299         {
5300                 rtlight = r_refdef.scene.lights[i];
5301                 rtlight->corona_visibility = 0;
5302                 rtlight->corona_queryindex_visiblepixels = 0;
5303                 rtlight->corona_queryindex_allpixels = 0;
5304                 if (!(rtlight->flags & flag))
5305                         continue;
5306                 if (rtlight->corona <= 0)
5307                         continue;
5308                 R_BeginCoronaQuery(rtlight, rtlight->radius * rtlight->coronasizescale * r_coronas_occlusionsizescale.value, usequery);
5309         }
5310         if (usequery)
5311                 GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
5312
5313         // now draw the coronas using the query data for intensity info
5314         for (lightindex = 0;lightindex < range;lightindex++)
5315         {
5316                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5317                 if (!light)
5318                         continue;
5319                 rtlight = &light->rtlight;
5320                 if (rtlight->corona_visibility <= 0)
5321                         continue;
5322                 R_DrawCorona(rtlight, rtlight->corona * r_coronas.value * 0.25f, rtlight->radius * rtlight->coronasizescale);
5323         }
5324         for (i = 0;i < r_refdef.scene.numlights;i++)
5325         {
5326                 rtlight = r_refdef.scene.lights[i];
5327                 if (rtlight->corona_visibility <= 0)
5328                         continue;
5329                 if (gl_flashblend.integer)
5330                         R_DrawCorona(rtlight, rtlight->corona, rtlight->radius * rtlight->coronasizescale * 2.0f);
5331                 else
5332                         R_DrawCorona(rtlight, rtlight->corona * r_coronas.value * 0.25f, rtlight->radius * rtlight->coronasizescale);
5333         }
5334 }
5335
5336
5337
5338 static dlight_t *R_Shadow_NewWorldLight(void)
5339 {
5340         return (dlight_t *)Mem_ExpandableArray_AllocRecord(&r_shadow_worldlightsarray);
5341 }
5342
5343 static void R_Shadow_UpdateWorldLight(dlight_t *light, vec3_t origin, vec3_t angles, vec3_t color, vec_t radius, vec_t corona, int style, int shadowenable, const char *cubemapname, vec_t coronasizescale, vec_t ambientscale, vec_t diffusescale, vec_t specularscale, int flags)
5344 {
5345         matrix4x4_t matrix;
5346         // validate parameters
5347         if (style < 0 || style >= MAX_LIGHTSTYLES)
5348         {
5349                 Con_Printf("R_Shadow_NewWorldLight: invalid light style number %i, must be >= 0 and < %i\n", light->style, MAX_LIGHTSTYLES);
5350                 style = 0;
5351         }
5352         if (!cubemapname)
5353                 cubemapname = "";
5354
5355         // copy to light properties
5356         VectorCopy(origin, light->origin);
5357         light->angles[0] = angles[0] - 360 * floor(angles[0] / 360);
5358         light->angles[1] = angles[1] - 360 * floor(angles[1] / 360);
5359         light->angles[2] = angles[2] - 360 * floor(angles[2] / 360);
5360         /*
5361         light->color[0] = max(color[0], 0);
5362         light->color[1] = max(color[1], 0);
5363         light->color[2] = max(color[2], 0);
5364         */
5365         light->color[0] = color[0];
5366         light->color[1] = color[1];
5367         light->color[2] = color[2];
5368         light->radius = max(radius, 0);
5369         light->style = style;
5370         light->shadow = shadowenable;
5371         light->corona = corona;
5372         strlcpy(light->cubemapname, cubemapname, sizeof(light->cubemapname));
5373         light->coronasizescale = coronasizescale;
5374         light->ambientscale = ambientscale;
5375         light->diffusescale = diffusescale;
5376         light->specularscale = specularscale;
5377         light->flags = flags;
5378
5379         // update renderable light data
5380         Matrix4x4_CreateFromQuakeEntity(&matrix, light->origin[0], light->origin[1], light->origin[2], light->angles[0], light->angles[1], light->angles[2], light->radius);
5381         R_RTLight_Update(&light->rtlight, true, &matrix, light->color, light->style, light->cubemapname[0] ? light->cubemapname : NULL, light->shadow, light->corona, light->coronasizescale, light->ambientscale, light->diffusescale, light->specularscale, light->flags);
5382 }
5383
5384 static void R_Shadow_FreeWorldLight(dlight_t *light)
5385 {
5386         if (r_shadow_selectedlight == light)
5387                 r_shadow_selectedlight = NULL;
5388         R_RTLight_Uncompile(&light->rtlight);
5389         Mem_ExpandableArray_FreeRecord(&r_shadow_worldlightsarray, light);
5390 }
5391
5392 void R_Shadow_ClearWorldLights(void)
5393 {
5394         size_t lightindex;
5395         dlight_t *light;
5396         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
5397         for (lightindex = 0;lightindex < range;lightindex++)
5398         {
5399                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5400                 if (light)
5401                         R_Shadow_FreeWorldLight(light);
5402         }
5403         r_shadow_selectedlight = NULL;
5404 }
5405
5406 static void R_Shadow_SelectLight(dlight_t *light)
5407 {
5408         if (r_shadow_selectedlight)
5409                 r_shadow_selectedlight->selected = false;
5410         r_shadow_selectedlight = light;
5411         if (r_shadow_selectedlight)
5412                 r_shadow_selectedlight->selected = true;
5413 }
5414
5415 static void R_Shadow_DrawCursor_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
5416 {
5417         // this is never batched (there can be only one)
5418         float vertex3f[12];
5419         R_CalcSprite_Vertex3f(vertex3f, r_editlights_cursorlocation, r_refdef.view.right, r_refdef.view.up, EDLIGHTSPRSIZE, -EDLIGHTSPRSIZE, -EDLIGHTSPRSIZE, EDLIGHTSPRSIZE);
5420         RSurf_ActiveCustomEntity(&identitymatrix, &identitymatrix, 0, 0, 1, 1, 1, 1, 4, vertex3f, spritetexcoord2f, NULL, NULL, NULL, NULL, 2, polygonelement3i, polygonelement3s, false, false);
5421         R_DrawCustomSurface(r_editlights_sprcursor, &identitymatrix, MATERIALFLAG_NODEPTHTEST | MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE, 0, 4, 0, 2, false, false);
5422 }
5423
5424 static void R_Shadow_DrawLightSprite_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
5425 {
5426         float intensity;
5427         float s;
5428         vec3_t spritecolor;
5429         skinframe_t *skinframe;
5430         float vertex3f[12];
5431
5432         // this is never batched (due to the ent parameter changing every time)
5433         // so numsurfaces == 1 and surfacelist[0] == lightnumber
5434         const dlight_t *light = (dlight_t *)ent;
5435         s = EDLIGHTSPRSIZE;
5436
5437         R_CalcSprite_Vertex3f(vertex3f, light->origin, r_refdef.view.right, r_refdef.view.up, s, -s, -s, s);
5438
5439         intensity = 0.5f;
5440         VectorScale(light->color, intensity, spritecolor);
5441         if (VectorLength(spritecolor) < 0.1732f)
5442                 VectorSet(spritecolor, 0.1f, 0.1f, 0.1f);
5443         if (VectorLength(spritecolor) > 1.0f)
5444                 VectorNormalize(spritecolor);
5445
5446         // draw light sprite
5447         if (light->cubemapname[0] && !light->shadow)
5448                 skinframe = r_editlights_sprcubemapnoshadowlight;
5449         else if (light->cubemapname[0])
5450                 skinframe = r_editlights_sprcubemaplight;
5451         else if (!light->shadow)
5452                 skinframe = r_editlights_sprnoshadowlight;
5453         else
5454                 skinframe = r_editlights_sprlight;
5455
5456         RSurf_ActiveCustomEntity(&identitymatrix, &identitymatrix, 0, 0, spritecolor[0], spritecolor[1], spritecolor[2], 1, 4, vertex3f, spritetexcoord2f, NULL, NULL, NULL, NULL, 2, polygonelement3i, polygonelement3s, false, false);
5457         R_DrawCustomSurface(skinframe, &identitymatrix, MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE, 0, 4, 0, 2, false, false);
5458
5459         // draw selection sprite if light is selected
5460         if (light->selected)
5461         {
5462                 RSurf_ActiveCustomEntity(&identitymatrix, &identitymatrix, 0, 0, 1, 1, 1, 1, 4, vertex3f, spritetexcoord2f, NULL, NULL, NULL, NULL, 2, polygonelement3i, polygonelement3s, false, false);
5463                 R_DrawCustomSurface(r_editlights_sprselection, &identitymatrix, MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE, 0, 4, 0, 2, false, false);
5464                 // VorteX todo: add normalmode/realtime mode light overlay sprites?
5465         }
5466 }
5467
5468 void R_Shadow_DrawLightSprites(void)
5469 {
5470         size_t lightindex;
5471         dlight_t *light;
5472         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
5473         for (lightindex = 0;lightindex < range;lightindex++)
5474         {
5475                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5476                 if (light)
5477                         R_MeshQueue_AddTransparent(TRANSPARENTSORT_DISTANCE, light->origin, R_Shadow_DrawLightSprite_TransparentCallback, (entity_render_t *)light, 5, &light->rtlight);
5478         }
5479         if (!r_editlights_lockcursor)
5480                 R_MeshQueue_AddTransparent(TRANSPARENTSORT_DISTANCE, r_editlights_cursorlocation, R_Shadow_DrawCursor_TransparentCallback, NULL, 0, NULL);
5481 }
5482
5483 int R_Shadow_GetRTLightInfo(unsigned int lightindex, float *origin, float *radius, float *color)
5484 {
5485         unsigned int range;
5486         dlight_t *light;
5487         rtlight_t *rtlight;
5488         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray);
5489         if (lightindex >= range)
5490                 return -1;
5491         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5492         if (!light)
5493                 return 0;
5494         rtlight = &light->rtlight;
5495         //if (!(rtlight->flags & flag))
5496         //      return 0;
5497         VectorCopy(rtlight->shadoworigin, origin);
5498         *radius = rtlight->radius;
5499         VectorCopy(rtlight->color, color);
5500         return 1;
5501 }
5502
5503 static void R_Shadow_SelectLightInView(void)
5504 {
5505         float bestrating, rating, temp[3];
5506         dlight_t *best;
5507         size_t lightindex;
5508         dlight_t *light;
5509         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
5510         best = NULL;
5511         bestrating = 0;
5512
5513         if (r_editlights_lockcursor)
5514                 return;
5515         for (lightindex = 0;lightindex < range;lightindex++)
5516         {
5517                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5518                 if (!light)
5519                         continue;
5520                 VectorSubtract(light->origin, r_refdef.view.origin, temp);
5521                 rating = (DotProduct(temp, r_refdef.view.forward) / sqrt(DotProduct(temp, temp)));
5522                 if (rating >= 0.95)
5523                 {
5524                         rating /= (1 + 0.0625f * sqrt(DotProduct(temp, temp)));
5525                         if (bestrating < rating && CL_TraceLine(light->origin, r_refdef.view.origin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true).fraction == 1.0f)
5526                         {
5527                                 bestrating = rating;
5528                                 best = light;
5529                         }
5530                 }
5531         }
5532         R_Shadow_SelectLight(best);
5533 }
5534
5535 void R_Shadow_LoadWorldLights(void)
5536 {
5537         int n, a, style, shadow, flags;
5538         char tempchar, *lightsstring, *s, *t, name[MAX_QPATH], cubemapname[MAX_QPATH];
5539         float origin[3], radius, color[3], angles[3], corona, coronasizescale, ambientscale, diffusescale, specularscale;
5540         if (cl.worldmodel == NULL)
5541         {
5542                 Con_Print("No map loaded.\n");
5543                 return;
5544         }
5545         dpsnprintf(name, sizeof(name), "%s.rtlights", cl.worldnamenoextension);
5546         lightsstring = (char *)FS_LoadFile(name, tempmempool, false, NULL);
5547         if (lightsstring)
5548         {
5549                 s = lightsstring;
5550                 n = 0;
5551                 while (*s)
5552                 {
5553                         /*
5554                         t = s;
5555                         shadow = true;
5556                         for (;COM_Parse(t, true) && strcmp(
5557                         if (COM_Parse(t, true))
5558                         {
5559                                 if (com_token[0] == '!')
5560                                 {
5561                                         shadow = false;
5562                                         origin[0] = atof(com_token+1);
5563                                 }
5564                                 else
5565                                         origin[0] = atof(com_token);
5566                                 if (Com_Parse(t
5567                         }
5568                         */
5569                         t = s;
5570                         while (*s && *s != '\n' && *s != '\r')
5571                                 s++;
5572                         if (!*s)
5573                                 break;
5574                         tempchar = *s;
5575                         shadow = true;
5576                         // check for modifier flags
5577                         if (*t == '!')
5578                         {
5579                                 shadow = false;
5580                                 t++;
5581                         }
5582                         *s = 0;
5583 #if _MSC_VER >= 1400
5584 #define sscanf sscanf_s
5585 #endif
5586                         cubemapname[sizeof(cubemapname)-1] = 0;
5587 #if MAX_QPATH != 128
5588 #error update this code if MAX_QPATH changes
5589 #endif
5590                         a = sscanf(t, "%f %f %f %f %f %f %f %d %127s %f %f %f %f %f %f %f %f %i", &origin[0], &origin[1], &origin[2], &radius, &color[0], &color[1], &color[2], &style, cubemapname
5591 #if _MSC_VER >= 1400
5592 , sizeof(cubemapname)
5593 #endif
5594 , &corona, &angles[0], &angles[1], &angles[2], &coronasizescale, &ambientscale, &diffusescale, &specularscale, &flags);
5595                         *s = tempchar;
5596                         if (a < 18)
5597                                 flags = LIGHTFLAG_REALTIMEMODE;
5598                         if (a < 17)
5599                                 specularscale = 1;
5600                         if (a < 16)
5601                                 diffusescale = 1;
5602                         if (a < 15)
5603                                 ambientscale = 0;
5604                         if (a < 14)
5605                                 coronasizescale = 0.25f;
5606                         if (a < 13)
5607                                 VectorClear(angles);
5608                         if (a < 10)
5609                                 corona = 0;
5610                         if (a < 9 || !strcmp(cubemapname, "\"\""))
5611                                 cubemapname[0] = 0;
5612                         // remove quotes on cubemapname
5613                         if (cubemapname[0] == '"' && cubemapname[strlen(cubemapname) - 1] == '"')
5614                         {
5615                                 size_t namelen;
5616                                 namelen = strlen(cubemapname) - 2;
5617                                 memmove(cubemapname, cubemapname + 1, namelen);
5618                                 cubemapname[namelen] = '\0';
5619                         }
5620                         if (a < 8)
5621                         {
5622                                 Con_Printf("found %d parameters on line %i, should be 8 or more parameters (origin[0] origin[1] origin[2] radius color[0] color[1] color[2] style \"cubemapname\" corona angles[0] angles[1] angles[2] coronasizescale ambientscale diffusescale specularscale flags)\n", a, n + 1);
5623                                 break;
5624                         }
5625                         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, angles, color, radius, corona, style, shadow, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
5626                         if (*s == '\r')
5627                                 s++;
5628                         if (*s == '\n')
5629                                 s++;
5630                         n++;
5631                 }
5632                 if (*s)
5633                         Con_Printf("invalid rtlights file \"%s\"\n", name);
5634                 Mem_Free(lightsstring);
5635         }
5636 }
5637
5638 void R_Shadow_SaveWorldLights(void)
5639 {
5640         size_t lightindex;
5641         dlight_t *light;
5642         size_t bufchars, bufmaxchars;
5643         char *buf, *oldbuf;
5644         char name[MAX_QPATH];
5645         char line[MAX_INPUTLINE];
5646         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked, assuming the dpsnprintf mess doesn't screw it up...
5647         // I hate lines which are 3 times my screen size :( --blub
5648         if (!range)
5649                 return;
5650         if (cl.worldmodel == NULL)
5651         {
5652                 Con_Print("No map loaded.\n");
5653                 return;
5654         }
5655         dpsnprintf(name, sizeof(name), "%s.rtlights", cl.worldnamenoextension);
5656         bufchars = bufmaxchars = 0;
5657         buf = NULL;
5658         for (lightindex = 0;lightindex < range;lightindex++)
5659         {
5660                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5661                 if (!light)
5662                         continue;
5663                 if (light->coronasizescale != 0.25f || light->ambientscale != 0 || light->diffusescale != 1 || light->specularscale != 1 || light->flags != LIGHTFLAG_REALTIMEMODE)
5664                         dpsnprintf(line, sizeof(line), "%s%f %f %f %f %f %f %f %d \"%s\" %f %f %f %f %f %f %f %f %i\n", light->shadow ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->radius, light->color[0], light->color[1], light->color[2], light->style, light->cubemapname, light->corona, light->angles[0], light->angles[1], light->angles[2], light->coronasizescale, light->ambientscale, light->diffusescale, light->specularscale, light->flags);
5665                 else if (light->cubemapname[0] || light->corona || light->angles[0] || light->angles[1] || light->angles[2])
5666                         dpsnprintf(line, sizeof(line), "%s%f %f %f %f %f %f %f %d \"%s\" %f %f %f %f\n", light->shadow ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->radius, light->color[0], light->color[1], light->color[2], light->style, light->cubemapname, light->corona, light->angles[0], light->angles[1], light->angles[2]);
5667                 else
5668                         dpsnprintf(line, sizeof(line), "%s%f %f %f %f %f %f %f %d\n", light->shadow ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->radius, light->color[0], light->color[1], light->color[2], light->style);
5669                 if (bufchars + strlen(line) > bufmaxchars)
5670                 {
5671                         bufmaxchars = bufchars + strlen(line) + 2048;
5672                         oldbuf = buf;
5673                         buf = (char *)Mem_Alloc(tempmempool, bufmaxchars);
5674                         if (oldbuf)
5675                         {
5676                                 if (bufchars)
5677                                         memcpy(buf, oldbuf, bufchars);
5678                                 Mem_Free(oldbuf);
5679                         }
5680                 }
5681                 if (strlen(line))
5682                 {
5683                         memcpy(buf + bufchars, line, strlen(line));
5684                         bufchars += strlen(line);
5685                 }
5686         }
5687         if (bufchars)
5688                 FS_WriteFile(name, buf, (fs_offset_t)bufchars);
5689         if (buf)
5690                 Mem_Free(buf);
5691 }
5692
5693 void R_Shadow_LoadLightsFile(void)
5694 {
5695         int n, a, style;
5696         char tempchar, *lightsstring, *s, *t, name[MAX_QPATH];
5697         float origin[3], radius, color[3], subtract, spotdir[3], spotcone, falloff, distbias;
5698         if (cl.worldmodel == NULL)
5699         {
5700                 Con_Print("No map loaded.\n");
5701                 return;
5702         }
5703         dpsnprintf(name, sizeof(name), "%s.lights", cl.worldnamenoextension);
5704         lightsstring = (char *)FS_LoadFile(name, tempmempool, false, NULL);
5705         if (lightsstring)
5706         {
5707                 s = lightsstring;
5708                 n = 0;
5709                 while (*s)
5710                 {
5711                         t = s;
5712                         while (*s && *s != '\n' && *s != '\r')
5713                                 s++;
5714                         if (!*s)
5715                                 break;
5716                         tempchar = *s;
5717                         *s = 0;
5718                         a = sscanf(t, "%f %f %f %f %f %f %f %f %f %f %f %f %f %d", &origin[0], &origin[1], &origin[2], &falloff, &color[0], &color[1], &color[2], &subtract, &spotdir[0], &spotdir[1], &spotdir[2], &spotcone, &distbias, &style);
5719                         *s = tempchar;
5720                         if (a < 14)
5721                         {
5722                                 Con_Printf("invalid lights file, found %d parameters on line %i, should be 14 parameters (origin[0] origin[1] origin[2] falloff light[0] light[1] light[2] subtract spotdir[0] spotdir[1] spotdir[2] spotcone distancebias style)\n", a, n + 1);
5723                                 break;
5724                         }
5725                         radius = sqrt(DotProduct(color, color) / (falloff * falloff * 8192.0f * 8192.0f));
5726                         radius = bound(15, radius, 4096);
5727                         VectorScale(color, (2.0f / (8388608.0f)), color);
5728                         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, vec3_origin, color, radius, 0, style, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
5729                         if (*s == '\r')
5730                                 s++;
5731                         if (*s == '\n')
5732                                 s++;
5733                         n++;
5734                 }
5735                 if (*s)
5736                         Con_Printf("invalid lights file \"%s\"\n", name);
5737                 Mem_Free(lightsstring);
5738         }
5739 }
5740
5741 // tyrlite/hmap2 light types in the delay field
5742 typedef enum lighttype_e {LIGHTTYPE_MINUSX, LIGHTTYPE_RECIPX, LIGHTTYPE_RECIPXX, LIGHTTYPE_NONE, LIGHTTYPE_SUN, LIGHTTYPE_MINUSXX} lighttype_t;
5743
5744 void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void)
5745 {
5746         int entnum;
5747         int style;
5748         int islight;
5749         int skin;
5750         int pflags;
5751         //int effects;
5752         int type;
5753         int n;
5754         char *entfiledata;
5755         const char *data;
5756         float origin[3], angles[3], radius, color[3], light[4], fadescale, lightscale, originhack[3], overridecolor[3], vec[4];
5757         char key[256], value[MAX_INPUTLINE];
5758         char vabuf[1024];
5759
5760         if (cl.worldmodel == NULL)
5761         {
5762                 Con_Print("No map loaded.\n");
5763                 return;
5764         }
5765         // try to load a .ent file first
5766         dpsnprintf(key, sizeof(key), "%s.ent", cl.worldnamenoextension);
5767         data = entfiledata = (char *)FS_LoadFile(key, tempmempool, true, NULL);
5768         // and if that is not found, fall back to the bsp file entity string
5769         if (!data)
5770                 data = cl.worldmodel->brush.entities;
5771         if (!data)
5772                 return;
5773         for (entnum = 0;COM_ParseToken_Simple(&data, false, false, true) && com_token[0] == '{';entnum++)
5774         {
5775                 type = LIGHTTYPE_MINUSX;
5776                 origin[0] = origin[1] = origin[2] = 0;
5777                 originhack[0] = originhack[1] = originhack[2] = 0;
5778                 angles[0] = angles[1] = angles[2] = 0;
5779                 color[0] = color[1] = color[2] = 1;
5780                 light[0] = light[1] = light[2] = 1;light[3] = 300;
5781                 overridecolor[0] = overridecolor[1] = overridecolor[2] = 1;
5782                 fadescale = 1;
5783                 lightscale = 1;
5784                 style = 0;
5785                 skin = 0;
5786                 pflags = 0;
5787                 //effects = 0;
5788                 islight = false;
5789                 while (1)
5790                 {
5791                         if (!COM_ParseToken_Simple(&data, false, false, true))
5792                                 break; // error
5793                         if (com_token[0] == '}')
5794                                 break; // end of entity
5795                         if (com_token[0] == '_')
5796                                 strlcpy(key, com_token + 1, sizeof(key));
5797                         else
5798                                 strlcpy(key, com_token, sizeof(key));
5799                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
5800                                 key[strlen(key)-1] = 0;
5801                         if (!COM_ParseToken_Simple(&data, false, false, true))
5802                                 break; // error
5803                         strlcpy(value, com_token, sizeof(value));
5804
5805                         // now that we have the key pair worked out...
5806                         if (!strcmp("light", key))
5807                         {
5808                                 n = sscanf(value, "%f %f %f %f", &vec[0], &vec[1], &vec[2], &vec[3]);
5809                                 if (n == 1)
5810                                 {
5811                                         // quake
5812                                         light[0] = vec[0] * (1.0f / 256.0f);
5813                                         light[1] = vec[0] * (1.0f / 256.0f);
5814                                         light[2] = vec[0] * (1.0f / 256.0f);
5815                                         light[3] = vec[0];
5816                                 }
5817                                 else if (n == 4)
5818                                 {
5819                                         // halflife
5820                                         light[0] = vec[0] * (1.0f / 255.0f);
5821                                         light[1] = vec[1] * (1.0f / 255.0f);
5822                                         light[2] = vec[2] * (1.0f / 255.0f);
5823                                         light[3] = vec[3];
5824                                 }
5825                         }
5826                         else if (!strcmp("delay", key))
5827                                 type = atoi(value);
5828                         else if (!strcmp("origin", key))
5829                                 sscanf(value, "%f %f %f", &origin[0], &origin[1], &origin[2]);
5830                         else if (!strcmp("angle", key))
5831                                 angles[0] = 0, angles[1] = atof(value), angles[2] = 0;
5832                         else if (!strcmp("angles", key))
5833                                 sscanf(value, "%f %f %f", &angles[0], &angles[1], &angles[2]);
5834                         else if (!strcmp("color", key))
5835                                 sscanf(value, "%f %f %f", &color[0], &color[1], &color[2]);
5836                         else if (!strcmp("wait", key))
5837                                 fadescale = atof(value);
5838                         else if (!strcmp("classname", key))
5839                         {
5840                                 if (!strncmp(value, "light", 5))
5841                                 {
5842                                         islight = true;
5843                                         if (!strcmp(value, "light_fluoro"))
5844                                         {
5845                                                 originhack[0] = 0;
5846                                                 originhack[1] = 0;
5847                                                 originhack[2] = 0;
5848                                                 overridecolor[0] = 1;
5849                                                 overridecolor[1] = 1;
5850                                                 overridecolor[2] = 1;
5851                                         }
5852                                         if (!strcmp(value, "light_fluorospark"))
5853                                         {
5854                                                 originhack[0] = 0;
5855                                                 originhack[1] = 0;
5856                                                 originhack[2] = 0;
5857                                                 overridecolor[0] = 1;
5858                                                 overridecolor[1] = 1;
5859                                                 overridecolor[2] = 1;
5860                                         }
5861                                         if (!strcmp(value, "light_globe"))
5862                                         {
5863                                                 originhack[0] = 0;
5864                                                 originhack[1] = 0;
5865                                                 originhack[2] = 0;
5866                                                 overridecolor[0] = 1;
5867                                                 overridecolor[1] = 0.8;
5868                                                 overridecolor[2] = 0.4;
5869                                         }
5870                                         if (!strcmp(value, "light_flame_large_yellow"))
5871                                         {
5872                                                 originhack[0] = 0;
5873                                                 originhack[1] = 0;
5874                                                 originhack[2] = 0;
5875                                                 overridecolor[0] = 1;
5876                                                 overridecolor[1] = 0.5;
5877                                                 overridecolor[2] = 0.1;
5878                                         }
5879                                         if (!strcmp(value, "light_flame_small_yellow"))
5880                                         {
5881                                                 originhack[0] = 0;
5882                                                 originhack[1] = 0;
5883                                                 originhack[2] = 0;
5884                                                 overridecolor[0] = 1;
5885                                                 overridecolor[1] = 0.5;
5886                                                 overridecolor[2] = 0.1;
5887                                         }
5888                                         if (!strcmp(value, "light_torch_small_white"))
5889                                         {
5890                                                 originhack[0] = 0;
5891                                                 originhack[1] = 0;
5892                                                 originhack[2] = 0;
5893                                                 overridecolor[0] = 1;
5894                                                 overridecolor[1] = 0.5;
5895                                                 overridecolor[2] = 0.1;
5896                                         }
5897                                         if (!strcmp(value, "light_torch_small_walltorch"))
5898                                         {
5899                                                 originhack[0] = 0;
5900                                                 originhack[1] = 0;
5901                                                 originhack[2] = 0;
5902                                                 overridecolor[0] = 1;
5903                                                 overridecolor[1] = 0.5;
5904                                                 overridecolor[2] = 0.1;
5905                                         }
5906                                 }
5907                         }
5908                         else if (!strcmp("style", key))
5909                                 style = atoi(value);
5910                         else if (!strcmp("skin", key))
5911                                 skin = (int)atof(value);
5912                         else if (!strcmp("pflags", key))
5913                                 pflags = (int)atof(value);
5914                         //else if (!strcmp("effects", key))
5915                         //      effects = (int)atof(value);
5916                         else if (cl.worldmodel->type == mod_brushq3)
5917                         {
5918                                 if (!strcmp("scale", key))
5919                                         lightscale = atof(value);
5920                                 if (!strcmp("fade", key))
5921                                         fadescale = atof(value);
5922                         }
5923                 }
5924                 if (!islight)
5925                         continue;
5926                 if (lightscale <= 0)
5927                         lightscale = 1;
5928                 if (fadescale <= 0)
5929                         fadescale = 1;
5930                 if (color[0] == color[1] && color[0] == color[2])
5931                 {
5932                         color[0] *= overridecolor[0];
5933                         color[1] *= overridecolor[1];
5934                         color[2] *= overridecolor[2];
5935                 }
5936                 radius = light[3] * r_editlights_quakelightsizescale.value * lightscale / fadescale;
5937                 color[0] = color[0] * light[0];
5938                 color[1] = color[1] * light[1];
5939                 color[2] = color[2] * light[2];
5940                 switch (type)
5941                 {
5942                 case LIGHTTYPE_MINUSX:
5943                         break;
5944                 case LIGHTTYPE_RECIPX:
5945                         radius *= 2;
5946                         VectorScale(color, (1.0f / 16.0f), color);
5947                         break;
5948                 case LIGHTTYPE_RECIPXX:
5949                         radius *= 2;
5950                         VectorScale(color, (1.0f / 16.0f), color);
5951                         break;
5952                 default:
5953                 case LIGHTTYPE_NONE:
5954                         break;
5955                 case LIGHTTYPE_SUN:
5956                         break;
5957                 case LIGHTTYPE_MINUSXX:
5958                         break;
5959                 }
5960                 VectorAdd(origin, originhack, origin);
5961                 if (radius >= 1)
5962                         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, angles, color, radius, (pflags & PFLAGS_CORONA) != 0, style, (pflags & PFLAGS_NOSHADOW) == 0, skin >= 16 ? va(vabuf, sizeof(vabuf), "cubemaps/%i", skin) : NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
5963         }
5964         if (entfiledata)
5965                 Mem_Free(entfiledata);
5966 }
5967
5968
5969 static void R_Shadow_SetCursorLocationForView(void)
5970 {
5971         vec_t dist, push;
5972         vec3_t dest, endpos;
5973         trace_t trace;
5974         VectorMA(r_refdef.view.origin, r_editlights_cursordistance.value, r_refdef.view.forward, dest);
5975         trace = CL_TraceLine(r_refdef.view.origin, dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true);
5976         if (trace.fraction < 1)
5977         {
5978                 dist = trace.fraction * r_editlights_cursordistance.value;
5979                 push = r_editlights_cursorpushback.value;
5980                 if (push > dist)
5981                         push = dist;
5982                 push = -push;
5983                 VectorMA(trace.endpos, push, r_refdef.view.forward, endpos);
5984                 VectorMA(endpos, r_editlights_cursorpushoff.value, trace.plane.normal, endpos);
5985         }
5986         else
5987         {
5988                 VectorClear( endpos );
5989         }
5990         r_editlights_cursorlocation[0] = floor(endpos[0] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
5991         r_editlights_cursorlocation[1] = floor(endpos[1] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
5992         r_editlights_cursorlocation[2] = floor(endpos[2] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
5993 }
5994
5995 void R_Shadow_UpdateWorldLightSelection(void)
5996 {
5997         if (r_editlights.integer)
5998         {
5999                 R_Shadow_SetCursorLocationForView();
6000                 R_Shadow_SelectLightInView();
6001         }
6002         else
6003                 R_Shadow_SelectLight(NULL);
6004 }
6005
6006 static void R_Shadow_EditLights_Clear_f(void)
6007 {
6008         R_Shadow_ClearWorldLights();
6009 }
6010
6011 void R_Shadow_EditLights_Reload_f(void)
6012 {
6013         if (!cl.worldmodel)
6014                 return;
6015         strlcpy(r_shadow_mapname, cl.worldname, sizeof(r_shadow_mapname));
6016         R_Shadow_ClearWorldLights();
6017         R_Shadow_LoadWorldLights();
6018         if (!Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray))
6019         {
6020                 R_Shadow_LoadLightsFile();
6021                 if (!Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray))
6022                         R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite();
6023         }
6024 }
6025
6026 static void R_Shadow_EditLights_Save_f(void)
6027 {
6028         if (!cl.worldmodel)
6029                 return;
6030         R_Shadow_SaveWorldLights();
6031 }
6032
6033 static void R_Shadow_EditLights_ImportLightEntitiesFromMap_f(void)
6034 {
6035         R_Shadow_ClearWorldLights();
6036         R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite();
6037 }
6038
6039 static void R_Shadow_EditLights_ImportLightsFile_f(void)
6040 {
6041         R_Shadow_ClearWorldLights();
6042         R_Shadow_LoadLightsFile();
6043 }
6044
6045 static void R_Shadow_EditLights_Spawn_f(void)
6046 {
6047         vec3_t color;
6048         if (!r_editlights.integer)
6049         {
6050                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
6051                 return;
6052         }
6053         if (Cmd_Argc() != 1)
6054         {
6055                 Con_Print("r_editlights_spawn does not take parameters\n");
6056                 return;
6057         }
6058         color[0] = color[1] = color[2] = 1;
6059         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), r_editlights_cursorlocation, vec3_origin, color, 200, 0, 0, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
6060 }
6061
6062 static void R_Shadow_EditLights_Edit_f(void)
6063 {
6064         vec3_t origin, angles, color;
6065         vec_t radius, corona, coronasizescale, ambientscale, diffusescale, specularscale;
6066         int style, shadows, flags, normalmode, realtimemode;
6067         char cubemapname[MAX_INPUTLINE];
6068         if (!r_editlights.integer)
6069         {
6070                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
6071                 return;
6072         }
6073         if (!r_shadow_selectedlight)
6074         {
6075                 Con_Print("No selected light.\n");
6076                 return;
6077         }
6078         VectorCopy(r_shadow_selectedlight->origin, origin);
6079         VectorCopy(r_shadow_selectedlight->angles, angles);
6080         VectorCopy(r_shadow_selectedlight->color, color);
6081         radius = r_shadow_selectedlight->radius;
6082         style = r_shadow_selectedlight->style;
6083         if (r_shadow_selectedlight->cubemapname)
6084                 strlcpy(cubemapname, r_shadow_selectedlight->cubemapname, sizeof(cubemapname));
6085         else
6086                 cubemapname[0] = 0;
6087         shadows = r_shadow_selectedlight->shadow;
6088         corona = r_shadow_selectedlight->corona;
6089         coronasizescale = r_shadow_selectedlight->coronasizescale;
6090         ambientscale = r_shadow_selectedlight->ambientscale;
6091         diffusescale = r_shadow_selectedlight->diffusescale;
6092         specularscale = r_shadow_selectedlight->specularscale;
6093         flags = r_shadow_selectedlight->flags;
6094         normalmode = (flags & LIGHTFLAG_NORMALMODE) != 0;
6095         realtimemode = (flags & LIGHTFLAG_REALTIMEMODE) != 0;
6096         if (!strcmp(Cmd_Argv(1), "origin"))
6097         {
6098                 if (Cmd_Argc() != 5)
6099                 {
6100                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
6101                         return;
6102                 }
6103                 origin[0] = atof(Cmd_Argv(2));
6104                 origin[1] = atof(Cmd_Argv(3));
6105                 origin[2] = atof(Cmd_Argv(4));
6106         }
6107         else if (!strcmp(Cmd_Argv(1), "originscale"))
6108         {
6109                 if (Cmd_Argc() != 5)
6110                 {
6111                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
6112                         return;
6113                 }
6114                 origin[0] *= atof(Cmd_Argv(2));
6115                 origin[1] *= atof(Cmd_Argv(3));
6116                 origin[2] *= atof(Cmd_Argv(4));
6117         }
6118         else if (!strcmp(Cmd_Argv(1), "originx"))
6119         {
6120                 if (Cmd_Argc() != 3)
6121                 {
6122                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6123                         return;
6124                 }
6125                 origin[0] = atof(Cmd_Argv(2));
6126         }
6127         else if (!strcmp(Cmd_Argv(1), "originy"))
6128         {
6129                 if (Cmd_Argc() != 3)
6130                 {
6131                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6132                         return;
6133                 }
6134                 origin[1] = atof(Cmd_Argv(2));
6135         }
6136         else if (!strcmp(Cmd_Argv(1), "originz"))
6137         {
6138                 if (Cmd_Argc() != 3)
6139                 {
6140                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6141                         return;
6142                 }
6143                 origin[2] = atof(Cmd_Argv(2));
6144         }
6145         else if (!strcmp(Cmd_Argv(1), "move"))
6146         {
6147                 if (Cmd_Argc() != 5)
6148                 {
6149                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
6150                         return;
6151                 }
6152                 origin[0] += atof(Cmd_Argv(2));
6153                 origin[1] += atof(Cmd_Argv(3));
6154                 origin[2] += atof(Cmd_Argv(4));
6155         }
6156         else if (!strcmp(Cmd_Argv(1), "movex"))
6157         {
6158                 if (Cmd_Argc() != 3)
6159                 {
6160                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6161                         return;
6162                 }
6163                 origin[0] += atof(Cmd_Argv(2));
6164         }
6165         else if (!strcmp(Cmd_Argv(1), "movey"))
6166         {
6167                 if (Cmd_Argc() != 3)
6168                 {
6169                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6170                         return;
6171                 }
6172                 origin[1] += atof(Cmd_Argv(2));
6173         }
6174         else if (!strcmp(Cmd_Argv(1), "movez"))
6175         {
6176                 if (Cmd_Argc() != 3)
6177                 {
6178                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6179                         return;
6180                 }
6181                 origin[2] += atof(Cmd_Argv(2));
6182         }
6183         else if (!strcmp(Cmd_Argv(1), "angles"))
6184         {
6185                 if (Cmd_Argc() != 5)
6186                 {
6187                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
6188                         return;
6189                 }
6190                 angles[0] = atof(Cmd_Argv(2));
6191                 angles[1] = atof(Cmd_Argv(3));
6192                 angles[2] = atof(Cmd_Argv(4));
6193         }
6194         else if (!strcmp(Cmd_Argv(1), "anglesx"))
6195         {
6196                 if (Cmd_Argc() != 3)
6197                 {
6198                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6199                         return;
6200                 }
6201                 angles[0] = atof(Cmd_Argv(2));
6202         }
6203         else if (!strcmp(Cmd_Argv(1), "anglesy"))
6204         {
6205                 if (Cmd_Argc() != 3)
6206                 {
6207                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6208                         return;
6209                 }
6210                 angles[1] = atof(Cmd_Argv(2));
6211         }
6212         else if (!strcmp(Cmd_Argv(1), "anglesz"))
6213         {
6214                 if (Cmd_Argc() != 3)
6215                 {
6216                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6217                         return;
6218                 }
6219                 angles[2] = atof(Cmd_Argv(2));
6220         }
6221         else if (!strcmp(Cmd_Argv(1), "color"))
6222         {
6223                 if (Cmd_Argc() != 5)
6224                 {
6225                         Con_Printf("usage: r_editlights_edit %s red green blue\n", Cmd_Argv(1));
6226                         return;
6227                 }
6228                 color[0] = atof(Cmd_Argv(2));
6229                 color[1] = atof(Cmd_Argv(3));
6230                 color[2] = atof(Cmd_Argv(4));
6231         }
6232         else if (!strcmp(Cmd_Argv(1), "radius"))
6233         {
6234                 if (Cmd_Argc() != 3)
6235                 {
6236                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6237                         return;
6238                 }
6239                 radius = atof(Cmd_Argv(2));
6240         }
6241         else if (!strcmp(Cmd_Argv(1), "colorscale"))
6242         {
6243                 if (Cmd_Argc() == 3)
6244                 {
6245                         double scale = atof(Cmd_Argv(2));
6246                         color[0] *= scale;
6247                         color[1] *= scale;
6248                         color[2] *= scale;
6249                 }
6250                 else
6251                 {
6252                         if (Cmd_Argc() != 5)
6253                         {
6254                                 Con_Printf("usage: r_editlights_edit %s red green blue  (OR grey instead of red green blue)\n", Cmd_Argv(1));
6255                                 return;
6256                         }
6257                         color[0] *= atof(Cmd_Argv(2));
6258                         color[1] *= atof(Cmd_Argv(3));
6259                         color[2] *= atof(Cmd_Argv(4));
6260                 }
6261         }
6262         else if (!strcmp(Cmd_Argv(1), "radiusscale") || !strcmp(Cmd_Argv(1), "sizescale"))
6263         {
6264                 if (Cmd_Argc() != 3)
6265                 {
6266                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6267                         return;
6268                 }
6269                 radius *= atof(Cmd_Argv(2));
6270         }
6271         else if (!strcmp(Cmd_Argv(1), "style"))
6272         {
6273                 if (Cmd_Argc() != 3)
6274                 {
6275                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6276                         return;
6277                 }
6278                 style = atoi(Cmd_Argv(2));
6279         }
6280         else if (!strcmp(Cmd_Argv(1), "cubemap"))
6281         {
6282                 if (Cmd_Argc() > 3)
6283                 {
6284                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6285                         return;
6286                 }
6287                 if (Cmd_Argc() == 3)
6288                         strlcpy(cubemapname, Cmd_Argv(2), sizeof(cubemapname));
6289                 else
6290                         cubemapname[0] = 0;
6291         }
6292         else if (!strcmp(Cmd_Argv(1), "shadows"))
6293         {
6294                 if (Cmd_Argc() != 3)
6295                 {
6296                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6297                         return;
6298                 }
6299                 shadows = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
6300         }
6301         else if (!strcmp(Cmd_Argv(1), "corona"))
6302         {
6303                 if (Cmd_Argc() != 3)
6304                 {
6305                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6306                         return;
6307                 }
6308                 corona = atof(Cmd_Argv(2));
6309         }
6310         else if (!strcmp(Cmd_Argv(1), "coronasize"))
6311         {
6312                 if (Cmd_Argc() != 3)
6313                 {
6314                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6315                         return;
6316                 }
6317                 coronasizescale = atof(Cmd_Argv(2));
6318         }
6319         else if (!strcmp(Cmd_Argv(1), "ambient"))
6320         {
6321                 if (Cmd_Argc() != 3)
6322                 {
6323                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6324                         return;
6325                 }
6326                 ambientscale = atof(Cmd_Argv(2));
6327         }
6328         else if (!strcmp(Cmd_Argv(1), "diffuse"))
6329         {
6330                 if (Cmd_Argc() != 3)
6331                 {
6332                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6333                         return;
6334                 }
6335                 diffusescale = atof(Cmd_Argv(2));
6336         }
6337         else if (!strcmp(Cmd_Argv(1), "specular"))
6338         {
6339                 if (Cmd_Argc() != 3)
6340                 {
6341                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6342                         return;
6343                 }
6344                 specularscale = atof(Cmd_Argv(2));
6345         }
6346         else if (!strcmp(Cmd_Argv(1), "normalmode"))
6347         {
6348                 if (Cmd_Argc() != 3)
6349                 {
6350                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6351                         return;
6352                 }
6353                 normalmode = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
6354         }
6355         else if (!strcmp(Cmd_Argv(1), "realtimemode"))
6356         {
6357                 if (Cmd_Argc() != 3)
6358                 {
6359                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6360                         return;
6361                 }
6362                 realtimemode = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
6363         }
6364         else
6365         {
6366                 Con_Print("usage: r_editlights_edit [property] [value]\n");
6367                 Con_Print("Selected light's properties:\n");
6368                 Con_Printf("Origin       : %f %f %f\n", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);
6369                 Con_Printf("Angles       : %f %f %f\n", r_shadow_selectedlight->angles[0], r_shadow_selectedlight->angles[1], r_shadow_selectedlight->angles[2]);
6370                 Con_Printf("Color        : %f %f %f\n", r_shadow_selectedlight->color[0], r_shadow_selectedlight->color[1], r_shadow_selectedlight->color[2]);
6371                 Con_Printf("Radius       : %f\n", r_shadow_selectedlight->radius);
6372                 Con_Printf("Corona       : %f\n", r_shadow_selectedlight->corona);
6373                 Con_Printf("Style        : %i\n", r_shadow_selectedlight->style);
6374                 Con_Printf("Shadows      : %s\n", r_shadow_selectedlight->shadow ? "yes" : "no");
6375                 Con_Printf("Cubemap      : %s\n", r_shadow_selectedlight->cubemapname);
6376                 Con_Printf("CoronaSize   : %f\n", r_shadow_selectedlight->coronasizescale);
6377                 Con_Printf("Ambient      : %f\n", r_shadow_selectedlight->ambientscale);
6378                 Con_Printf("Diffuse      : %f\n", r_shadow_selectedlight->diffusescale);
6379                 Con_Printf("Specular     : %f\n", r_shadow_selectedlight->specularscale);
6380                 Con_Printf("NormalMode   : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_NORMALMODE) ? "yes" : "no");
6381                 Con_Printf("RealTimeMode : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_REALTIMEMODE) ? "yes" : "no");
6382                 return;
6383         }
6384         flags = (normalmode ? LIGHTFLAG_NORMALMODE : 0) | (realtimemode ? LIGHTFLAG_REALTIMEMODE : 0);
6385         R_Shadow_UpdateWorldLight(r_shadow_selectedlight, origin, angles, color, radius, corona, style, shadows, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
6386 }
6387
6388 static void R_Shadow_EditLights_EditAll_f(void)
6389 {
6390         size_t lightindex;
6391         dlight_t *light, *oldselected;
6392         size_t range;
6393
6394         if (!r_editlights.integer)
6395         {
6396                 Con_Print("Cannot edit lights when not in editing mode. Set r_editlights to 1.\n");
6397                 return;
6398         }
6399
6400         oldselected = r_shadow_selectedlight;
6401         // EditLights doesn't seem to have a "remove" command or something so:
6402         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
6403         for (lightindex = 0;lightindex < range;lightindex++)
6404         {
6405                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
6406                 if (!light)
6407                         continue;
6408                 R_Shadow_SelectLight(light);
6409                 R_Shadow_EditLights_Edit_f();
6410         }
6411         // return to old selected (to not mess editing once selection is locked)
6412         R_Shadow_SelectLight(oldselected);
6413 }
6414
6415 void R_Shadow_EditLights_DrawSelectedLightProperties(void)
6416 {
6417         int lightnumber, lightcount;
6418         size_t lightindex, range;
6419         dlight_t *light;
6420         char temp[256];
6421         float x, y;
6422
6423         if (!r_editlights.integer)
6424                 return;
6425
6426         // update cvars so QC can query them
6427         if (r_shadow_selectedlight)
6428         {
6429                 dpsnprintf(temp, sizeof(temp), "%f %f %f", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);
6430                 Cvar_SetQuick(&r_editlights_current_origin, temp);
6431                 dpsnprintf(temp, sizeof(temp), "%f %f %f", r_shadow_selectedlight->angles[0], r_shadow_selectedlight->angles[1], r_shadow_selectedlight->angles[2]);
6432                 Cvar_SetQuick(&r_editlights_current_angles, temp);
6433                 dpsnprintf(temp, sizeof(temp), "%f %f %f", r_shadow_selectedlight->color[0], r_shadow_selectedlight->color[1], r_shadow_selectedlight->color[2]);
6434                 Cvar_SetQuick(&r_editlights_current_color, temp);
6435                 Cvar_SetValueQuick(&r_editlights_current_radius, r_shadow_selectedlight->radius);
6436                 Cvar_SetValueQuick(&r_editlights_current_corona, r_shadow_selectedlight->corona);
6437                 Cvar_SetValueQuick(&r_editlights_current_coronasize, r_shadow_selectedlight->coronasizescale);
6438                 Cvar_SetValueQuick(&r_editlights_current_style, r_shadow_selectedlight->style);
6439                 Cvar_SetValueQuick(&r_editlights_current_shadows, r_shadow_selectedlight->shadow);
6440                 Cvar_SetQuick(&r_editlights_current_cubemap, r_shadow_selectedlight->cubemapname);
6441                 Cvar_SetValueQuick(&r_editlights_current_ambient, r_shadow_selectedlight->ambientscale);
6442                 Cvar_SetValueQuick(&r_editlights_current_diffuse, r_shadow_selectedlight->diffusescale);
6443                 Cvar_SetValueQuick(&r_editlights_current_specular, r_shadow_selectedlight->specularscale);
6444                 Cvar_SetValueQuick(&r_editlights_current_normalmode, (r_shadow_selectedlight->flags & LIGHTFLAG_NORMALMODE) ? 1 : 0);
6445                 Cvar_SetValueQuick(&r_editlights_current_realtimemode, (r_shadow_selectedlight->flags & LIGHTFLAG_REALTIMEMODE) ? 1 : 0);
6446         }
6447
6448         // draw properties on screen
6449         if (!r_editlights_drawproperties.integer)
6450                 return;
6451         x = vid_conwidth.value - 240;
6452         y = 5;
6453         DrawQ_Pic(x-5, y-5, NULL, 250, 155, 0, 0, 0, 0.75, 0);
6454         lightnumber = -1;
6455         lightcount = 0;
6456         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
6457         for (lightindex = 0;lightindex < range;lightindex++)
6458         {
6459                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
6460                 if (!light)
6461                         continue;
6462                 if (light == r_shadow_selectedlight)
6463                         lightnumber = lightindex;
6464                 lightcount++;
6465         }
6466         dpsnprintf(temp, sizeof(temp), "Cursor origin: %.0f %.0f %.0f", r_editlights_cursorlocation[0], r_editlights_cursorlocation[1], r_editlights_cursorlocation[2]); DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, false, FONT_DEFAULT);y += 8;
6467         dpsnprintf(temp, sizeof(temp), "Total lights : %i active (%i total)", lightcount, (int)Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray)); DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, false, FONT_DEFAULT);y += 8;
6468         y += 8;
6469         if (r_shadow_selectedlight == NULL)
6470                 return;
6471         dpsnprintf(temp, sizeof(temp), "Light #%i properties:", lightnumber);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6472         dpsnprintf(temp, sizeof(temp), "Origin       : %.0f %.0f %.0f\n", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6473         dpsnprintf(temp, sizeof(temp), "Angles       : %.0f %.0f %.0f\n", r_shadow_selectedlight->angles[0], r_shadow_selectedlight->angles[1], r_shadow_selectedlight->angles[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6474         dpsnprintf(temp, sizeof(temp), "Color        : %.2f %.2f %.2f\n", r_shadow_selectedlight->color[0], r_shadow_selectedlight->color[1], r_shadow_selectedlight->color[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6475         dpsnprintf(temp, sizeof(temp), "Radius       : %.0f\n", r_shadow_selectedlight->radius);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6476         dpsnprintf(temp, sizeof(temp), "Corona       : %.0f\n", r_shadow_selectedlight->corona);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6477         dpsnprintf(temp, sizeof(temp), "Style        : %i\n", r_shadow_selectedlight->style);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6478         dpsnprintf(temp, sizeof(temp), "Shadows      : %s\n", r_shadow_selectedlight->shadow ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6479         dpsnprintf(temp, sizeof(temp), "Cubemap      : %s\n", r_shadow_selectedlight->cubemapname);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6480         dpsnprintf(temp, sizeof(temp), "CoronaSize   : %.2f\n", r_shadow_selectedlight->coronasizescale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6481         dpsnprintf(temp, sizeof(temp), "Ambient      : %.2f\n", r_shadow_selectedlight->ambientscale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6482         dpsnprintf(temp, sizeof(temp), "Diffuse      : %.2f\n", r_shadow_selectedlight->diffusescale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6483         dpsnprintf(temp, sizeof(temp), "Specular     : %.2f\n", r_shadow_selectedlight->specularscale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6484         dpsnprintf(temp, sizeof(temp), "NormalMode   : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_NORMALMODE) ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6485         dpsnprintf(temp, sizeof(temp), "RealTimeMode : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_REALTIMEMODE) ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
6486 }
6487
6488 static void R_Shadow_EditLights_ToggleShadow_f(void)
6489 {
6490         if (!r_editlights.integer)
6491         {
6492                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
6493                 return;
6494         }
6495         if (!r_shadow_selectedlight)
6496         {
6497                 Con_Print("No selected light.\n");
6498                 return;
6499         }
6500         R_Shadow_UpdateWorldLight(r_shadow_selectedlight, r_shadow_selectedlight->origin, r_shadow_selectedlight->angles, r_shadow_selectedlight->color, r_shadow_selectedlight->radius, r_shadow_selectedlight->corona, r_shadow_selectedlight->style, !r_shadow_selectedlight->shadow, r_shadow_selectedlight->cubemapname, r_shadow_selectedlight->coronasizescale, r_shadow_selectedlight->ambientscale, r_shadow_selectedlight->diffusescale, r_shadow_selectedlight->specularscale, r_shadow_selectedlight->flags);
6501 }
6502
6503 static void R_Shadow_EditLights_ToggleCorona_f(void)
6504 {
6505         if (!r_editlights.integer)
6506         {
6507                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
6508                 return;
6509         }
6510         if (!r_shadow_selectedlight)
6511         {
6512                 Con_Print("No selected light.\n");
6513                 return;
6514         }
6515         R_Shadow_UpdateWorldLight(r_shadow_selectedlight, r_shadow_selectedlight->origin, r_shadow_selectedlight->angles, r_shadow_selectedlight->color, r_shadow_selectedlight->radius, !r_shadow_selectedlight->corona, r_shadow_selectedlight->style, r_shadow_selectedlight->shadow, r_shadow_selectedlight->cubemapname, r_shadow_selectedlight->coronasizescale, r_shadow_selectedlight->ambientscale, r_shadow_selectedlight->diffusescale, r_shadow_selectedlight->specularscale, r_shadow_selectedlight->flags);
6516 }
6517
6518 static void R_Shadow_EditLights_Remove_f(void)
6519 {
6520         if (!r_editlights.integer)
6521         {
6522                 Con_Print("Cannot remove light when not in editing mode.  Set r_editlights to 1.\n");
6523                 return;
6524         }
6525         if (!r_shadow_selectedlight)
6526         {
6527                 Con_Print("No selected light.\n");
6528                 return;
6529         }
6530         R_Shadow_FreeWorldLight(r_shadow_selectedlight);
6531         r_shadow_selectedlight = NULL;
6532 }
6533
6534 static void R_Shadow_EditLights_Help_f(void)
6535 {
6536         Con_Print(
6537 "Documentation on r_editlights system:\n"
6538 "Settings:\n"
6539 "r_editlights : enable/disable editing mode\n"
6540 "r_editlights_cursordistance : maximum distance of cursor from eye\n"
6541 "r_editlights_cursorpushback : push back cursor this far from surface\n"
6542 "r_editlights_cursorpushoff : push cursor off surface this far\n"
6543 "r_editlights_cursorgrid : snap cursor to grid of this size\n"
6544 "r_editlights_quakelightsizescale : imported quake light entity size scaling\n"
6545 "Commands:\n"
6546 "r_editlights_help : this help\n"
6547 "r_editlights_clear : remove all lights\n"
6548 "r_editlights_reload : reload .rtlights, .lights file, or entities\n"
6549 "r_editlights_lock : lock selection to current light, if already locked - unlock\n"
6550 "r_editlights_save : save to .rtlights file\n"
6551 "r_editlights_spawn : create a light with default settings\n"
6552 "r_editlights_edit command : edit selected light - more documentation below\n"
6553 "r_editlights_remove : remove selected light\n"
6554 "r_editlights_toggleshadow : toggles on/off selected light's shadow property\n"
6555 "r_editlights_importlightentitiesfrommap : reload light entities\n"
6556 "r_editlights_importlightsfile : reload .light file (produced by hlight)\n"
6557 "Edit commands:\n"
6558 "origin x y z : set light location\n"
6559 "originx x: set x component of light location\n"
6560 "originy y: set y component of light location\n"
6561 "originz z: set z component of light location\n"
6562 "move x y z : adjust light location\n"
6563 "movex x: adjust x component of light location\n"
6564 "movey y: adjust y component of light location\n"
6565 "movez z: adjust z component of light location\n"
6566 "angles x y z : set light angles\n"
6567 "anglesx x: set x component of light angles\n"
6568 "anglesy y: set y component of light angles\n"
6569 "anglesz z: set z component of light angles\n"
6570 "color r g b : set color of light (can be brighter than 1 1 1)\n"
6571 "radius radius : set radius (size) of light\n"
6572 "colorscale grey : multiply color of light (1 does nothing)\n"
6573 "colorscale r g b : multiply color of light (1 1 1 does nothing)\n"
6574 "radiusscale scale : multiply radius (size) of light (1 does nothing)\n"
6575 "sizescale scale : multiply radius (size) of light (1 does nothing)\n"
6576 "originscale x y z : multiply origin of light (1 1 1 does nothing)\n"
6577 "style style : set lightstyle of light (flickering patterns, switches, etc)\n"
6578 "cubemap basename : set filter cubemap of light\n"
6579 "shadows 1/0 : turn on/off shadows\n"
6580 "corona n : set corona intensity\n"
6581 "coronasize n : set corona size (0-1)\n"
6582 "ambient n : set ambient intensity (0-1)\n"
6583 "diffuse n : set diffuse intensity (0-1)\n"
6584 "specular n : set specular intensity (0-1)\n"
6585 "normalmode 1/0 : turn on/off rendering of this light in rtworld 0 mode\n"
6586 "realtimemode 1/0 : turn on/off rendering of this light in rtworld 1 mode\n"
6587 "<nothing> : print light properties to console\n"
6588         );
6589 }
6590
6591 static void R_Shadow_EditLights_CopyInfo_f(void)
6592 {
6593         if (!r_editlights.integer)
6594         {
6595                 Con_Print("Cannot copy light info when not in editing mode.  Set r_editlights to 1.\n");
6596                 return;
6597         }
6598         if (!r_shadow_selectedlight)
6599         {
6600                 Con_Print("No selected light.\n");
6601                 return;
6602         }
6603         VectorCopy(r_shadow_selectedlight->angles, r_shadow_bufferlight.angles);
6604         VectorCopy(r_shadow_selectedlight->color, r_shadow_bufferlight.color);
6605         r_shadow_bufferlight.radius = r_shadow_selectedlight->radius;
6606         r_shadow_bufferlight.style = r_shadow_selectedlight->style;
6607         if (r_shadow_selectedlight->cubemapname)
6608                 strlcpy(r_shadow_bufferlight.cubemapname, r_shadow_selectedlight->cubemapname, sizeof(r_shadow_bufferlight.cubemapname));
6609         else
6610                 r_shadow_bufferlight.cubemapname[0] = 0;
6611         r_shadow_bufferlight.shadow = r_shadow_selectedlight->shadow;
6612         r_shadow_bufferlight.corona = r_shadow_selectedlight->corona;
6613         r_shadow_bufferlight.coronasizescale = r_shadow_selectedlight->coronasizescale;
6614         r_shadow_bufferlight.ambientscale = r_shadow_selectedlight->ambientscale;
6615         r_shadow_bufferlight.diffusescale = r_shadow_selectedlight->diffusescale;
6616         r_shadow_bufferlight.specularscale = r_shadow_selectedlight->specularscale;
6617         r_shadow_bufferlight.flags = r_shadow_selectedlight->flags;
6618 }
6619
6620 static void R_Shadow_EditLights_PasteInfo_f(void)
6621 {
6622         if (!r_editlights.integer)
6623         {
6624                 Con_Print("Cannot paste light info when not in editing mode.  Set r_editlights to 1.\n");
6625                 return;
6626         }
6627         if (!r_shadow_selectedlight)
6628         {
6629                 Con_Print("No selected light.\n");
6630                 return;
6631         }
6632         R_Shadow_UpdateWorldLight(r_shadow_selectedlight, r_shadow_selectedlight->origin, r_shadow_bufferlight.angles, r_shadow_bufferlight.color, r_shadow_bufferlight.radius, r_shadow_bufferlight.corona, r_shadow_bufferlight.style, r_shadow_bufferlight.shadow, r_shadow_bufferlight.cubemapname, r_shadow_bufferlight.coronasizescale, r_shadow_bufferlight.ambientscale, r_shadow_bufferlight.diffusescale, r_shadow_bufferlight.specularscale, r_shadow_bufferlight.flags);
6633 }
6634
6635 static void R_Shadow_EditLights_Lock_f(void)
6636 {
6637         if (!r_editlights.integer)
6638         {
6639                 Con_Print("Cannot lock on light when not in editing mode.  Set r_editlights to 1.\n");
6640                 return;
6641         }
6642         if (r_editlights_lockcursor)
6643         {
6644                 r_editlights_lockcursor = false;
6645                 return;
6646         }
6647         if (!r_shadow_selectedlight)
6648         {
6649                 Con_Print("No selected light to lock on.\n");
6650                 return;
6651         }
6652         r_editlights_lockcursor = true;
6653 }
6654
6655 static void R_Shadow_EditLights_Init(void)
6656 {
6657         Cvar_RegisterVariable(&r_editlights);
6658         Cvar_RegisterVariable(&r_editlights_cursordistance);
6659         Cvar_RegisterVariable(&r_editlights_cursorpushback);
6660         Cvar_RegisterVariable(&r_editlights_cursorpushoff);
6661         Cvar_RegisterVariable(&r_editlights_cursorgrid);
6662         Cvar_RegisterVariable(&r_editlights_quakelightsizescale);
6663         Cvar_RegisterVariable(&r_editlights_drawproperties);
6664         Cvar_RegisterVariable(&r_editlights_current_origin);
6665         Cvar_RegisterVariable(&r_editlights_current_angles);
6666         Cvar_RegisterVariable(&r_editlights_current_color);
6667         Cvar_RegisterVariable(&r_editlights_current_radius);
6668         Cvar_RegisterVariable(&r_editlights_current_corona);
6669         Cvar_RegisterVariable(&r_editlights_current_coronasize);
6670         Cvar_RegisterVariable(&r_editlights_current_style);
6671         Cvar_RegisterVariable(&r_editlights_current_shadows);
6672         Cvar_RegisterVariable(&r_editlights_current_cubemap);
6673         Cvar_RegisterVariable(&r_editlights_current_ambient);
6674         Cvar_RegisterVariable(&r_editlights_current_diffuse);
6675         Cvar_RegisterVariable(&r_editlights_current_specular);
6676         Cvar_RegisterVariable(&r_editlights_current_normalmode);
6677         Cvar_RegisterVariable(&r_editlights_current_realtimemode);
6678         Cmd_AddCommand("r_editlights_help", R_Shadow_EditLights_Help_f, "prints documentation on console commands and variables in rtlight editing system");
6679         Cmd_AddCommand("r_editlights_clear", R_Shadow_EditLights_Clear_f, "removes all world lights (let there be darkness!)");
6680         Cmd_AddCommand("r_editlights_reload", R_Shadow_EditLights_Reload_f, "reloads rtlights file (or imports from .lights file or .ent file or the map itself)");
6681         Cmd_AddCommand("r_editlights_save", R_Shadow_EditLights_Save_f, "save .rtlights file for current level");
6682         Cmd_AddCommand("r_editlights_spawn", R_Shadow_EditLights_Spawn_f, "creates a light with default properties (let there be light!)");
6683         Cmd_AddCommand("r_editlights_edit", R_Shadow_EditLights_Edit_f, "changes a property on the selected light");
6684         Cmd_AddCommand("r_editlights_editall", R_Shadow_EditLights_EditAll_f, "changes a property on ALL lights at once (tip: use radiusscale and colorscale to alter these properties)");
6685         Cmd_AddCommand("r_editlights_remove", R_Shadow_EditLights_Remove_f, "remove selected light");
6686         Cmd_AddCommand("r_editlights_toggleshadow", R_Shadow_EditLights_ToggleShadow_f, "toggle on/off the shadow option on the selected light");
6687         Cmd_AddCommand("r_editlights_togglecorona", R_Shadow_EditLights_ToggleCorona_f, "toggle on/off the corona option on the selected light");
6688         Cmd_AddCommand("r_editlights_importlightentitiesfrommap", R_Shadow_EditLights_ImportLightEntitiesFromMap_f, "load lights from .ent file or map entities (ignoring .rtlights or .lights file)");
6689         Cmd_AddCommand("r_editlights_importlightsfile", R_Shadow_EditLights_ImportLightsFile_f, "load lights from .lights file (ignoring .rtlights or .ent files and map entities)");
6690         Cmd_AddCommand("r_editlights_copyinfo", R_Shadow_EditLights_CopyInfo_f, "store a copy of all properties (except origin) of the selected light");
6691         Cmd_AddCommand("r_editlights_pasteinfo", R_Shadow_EditLights_PasteInfo_f, "apply the stored properties onto the selected light (making it exactly identical except for origin)");
6692         Cmd_AddCommand("r_editlights_lock", R_Shadow_EditLights_Lock_f, "lock selection to current light, if already locked - unlock");
6693 }
6694
6695
6696
6697 /*
6698 =============================================================================
6699
6700 LIGHT SAMPLING
6701
6702 =============================================================================
6703 */
6704
6705 void R_LightPoint(float *color, const vec3_t p, const int flags)
6706 {
6707         int i, numlights, flag;
6708         float f, relativepoint[3], dist, dist2, lightradius2;
6709         vec3_t diffuse, n;
6710         rtlight_t *light;
6711         dlight_t *dlight;
6712
6713         if (r_fullbright.integer)
6714         {
6715                 VectorSet(color, 1, 1, 1);
6716                 return;
6717         }
6718
6719         VectorClear(color);
6720
6721         if (flags & LP_LIGHTMAP)
6722         {
6723                 if (!r_fullbright.integer && r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->lit && r_refdef.scene.worldmodel->brush.LightPoint)
6724                 {
6725                         VectorClear(diffuse);
6726                         r_refdef.scene.worldmodel->brush.LightPoint(r_refdef.scene.worldmodel, p, color, diffuse, n);
6727                         VectorAdd(color, diffuse, color);
6728                 }
6729                 else
6730                         VectorSet(color, 1, 1, 1);
6731                 color[0] += r_refdef.scene.ambient;
6732                 color[1] += r_refdef.scene.ambient;
6733                 color[2] += r_refdef.scene.ambient;
6734         }
6735
6736         if (flags & LP_RTWORLD)
6737         {
6738                 flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
6739                 numlights = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray);
6740                 for (i = 0; i < numlights; i++)
6741                 {
6742                         dlight = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, i);
6743                         if (!dlight)
6744                                 continue;
6745                         light = &dlight->rtlight;
6746                         if (!(light->flags & flag))
6747                                 continue;
6748                         // sample
6749                         lightradius2 = light->radius * light->radius;
6750                         VectorSubtract(light->shadoworigin, p, relativepoint);
6751                         dist2 = VectorLength2(relativepoint);
6752                         if (dist2 >= lightradius2)
6753                                 continue;
6754                         dist = sqrt(dist2) / light->radius;
6755                         f = dist < 1 ? (r_shadow_lightintensityscale.value * ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist))) : 0;
6756                         if (f <= 0)
6757                                 continue;
6758                         // todo: add to both ambient and diffuse
6759                         if (!light->shadow || CL_TraceLine(p, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true).fraction == 1)
6760                                 VectorMA(color, f, light->currentcolor, color);
6761                 }
6762         }
6763         if (flags & LP_DYNLIGHT)
6764         {
6765                 // sample dlights
6766                 for (i = 0;i < r_refdef.scene.numlights;i++)
6767                 {
6768                         light = r_refdef.scene.lights[i];
6769                         // sample
6770                         lightradius2 = light->radius * light->radius;
6771                         VectorSubtract(light->shadoworigin, p, relativepoint);
6772                         dist2 = VectorLength2(relativepoint);
6773                         if (dist2 >= lightradius2)
6774                                 continue;
6775                         dist = sqrt(dist2) / light->radius;
6776                         f = dist < 1 ? (r_shadow_lightintensityscale.value * ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist))) : 0;
6777                         if (f <= 0)
6778                                 continue;
6779                         // todo: add to both ambient and diffuse
6780                         if (!light->shadow || CL_TraceLine(p, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true).fraction == 1)
6781                                 VectorMA(color, f, light->color, color);
6782                 }
6783         }
6784 }
6785
6786 void R_CompleteLightPoint(vec3_t ambient, vec3_t diffuse, vec3_t lightdir, const vec3_t p, const int flags)
6787 {
6788         int i, numlights, flag;
6789         rtlight_t *light;
6790         dlight_t *dlight;
6791         float relativepoint[3];
6792         float color[3];
6793         float dir[3];
6794         float dist;
6795         float dist2;
6796         float intensity;
6797         float sample[5*3];
6798         float lightradius2;
6799
6800         if (r_fullbright.integer)
6801         {
6802                 VectorSet(ambient, 1, 1, 1);
6803                 VectorClear(diffuse);
6804                 VectorClear(lightdir);
6805                 return;
6806         }
6807
6808         if (flags == LP_LIGHTMAP)
6809         {
6810                 VectorSet(ambient, r_refdef.scene.ambient, r_refdef.scene.ambient, r_refdef.scene.ambient);
6811                 VectorClear(diffuse);
6812                 VectorClear(lightdir);
6813                 if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->lit && r_refdef.scene.worldmodel->brush.LightPoint)
6814                         r_refdef.scene.worldmodel->brush.LightPoint(r_refdef.scene.worldmodel, p, ambient, diffuse, lightdir);
6815                 else
6816                         VectorSet(ambient, 1, 1, 1);
6817                 return;
6818         }
6819
6820         memset(sample, 0, sizeof(sample));
6821         VectorSet(sample, r_refdef.scene.ambient, r_refdef.scene.ambient, r_refdef.scene.ambient);
6822
6823         if ((flags & LP_LIGHTMAP) && r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->lit && r_refdef.scene.worldmodel->brush.LightPoint)
6824         {
6825                 vec3_t tempambient;
6826                 VectorClear(tempambient);
6827                 VectorClear(color);
6828                 VectorClear(relativepoint);
6829                 r_refdef.scene.worldmodel->brush.LightPoint(r_refdef.scene.worldmodel, p, tempambient, color, relativepoint);
6830                 VectorScale(tempambient, r_refdef.lightmapintensity, tempambient);
6831                 VectorScale(color, r_refdef.lightmapintensity, color);
6832                 VectorAdd(sample, tempambient, sample);
6833                 VectorMA(sample    , 0.5f            , color, sample    );
6834                 VectorMA(sample + 3, relativepoint[0], color, sample + 3);
6835                 VectorMA(sample + 6, relativepoint[1], color, sample + 6);
6836                 VectorMA(sample + 9, relativepoint[2], color, sample + 9);
6837                 // calculate a weighted average light direction as well
6838                 intensity = VectorLength(color);
6839                 VectorMA(sample + 12, intensity, relativepoint, sample + 12);
6840         }
6841
6842         if (flags & LP_RTWORLD)
6843         {
6844                 flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
6845                 numlights = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray);
6846                 for (i = 0; i < numlights; i++)
6847                 {
6848                         dlight = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, i);
6849                         if (!dlight)
6850                                 continue;
6851                         light = &dlight->rtlight;
6852                         if (!(light->flags & flag))
6853                                 continue;
6854                         // sample
6855                         lightradius2 = light->radius * light->radius;
6856                         VectorSubtract(light->shadoworigin, p, relativepoint);
6857                         dist2 = VectorLength2(relativepoint);
6858                         if (dist2 >= lightradius2)
6859                                 continue;
6860                         dist = sqrt(dist2) / light->radius;
6861                         intensity = min(1.0f, (1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) * r_shadow_lightintensityscale.value;
6862                         if (intensity <= 0.0f)
6863                                 continue;
6864                         if (light->shadow && CL_TraceLine(p, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true).fraction < 1)
6865                                 continue;
6866                         // scale down intensity to add to both ambient and diffuse
6867                         //intensity *= 0.5f;
6868                         VectorNormalize(relativepoint);
6869                         VectorScale(light->currentcolor, intensity, color);
6870                         VectorMA(sample    , 0.5f            , color, sample    );
6871                         VectorMA(sample + 3, relativepoint[0], color, sample + 3);
6872                         VectorMA(sample + 6, relativepoint[1], color, sample + 6);
6873                         VectorMA(sample + 9, relativepoint[2], color, sample + 9);
6874                         // calculate a weighted average light direction as well
6875                         intensity *= VectorLength(color);
6876                         VectorMA(sample + 12, intensity, relativepoint, sample + 12);
6877                 }
6878                 // FIXME: sample bouncegrid too!
6879         }
6880
6881         if (flags & LP_DYNLIGHT)
6882         {
6883                 // sample dlights
6884                 for (i = 0;i < r_refdef.scene.numlights;i++)
6885                 {
6886                         light = r_refdef.scene.lights[i];
6887                         // sample
6888                         lightradius2 = light->radius * light->radius;
6889                         VectorSubtract(light->shadoworigin, p, relativepoint);
6890                         dist2 = VectorLength2(relativepoint);
6891                         if (dist2 >= lightradius2)
6892                                 continue;
6893                         dist = sqrt(dist2) / light->radius;
6894                         intensity = (1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist) * r_shadow_lightintensityscale.value;
6895                         if (intensity <= 0.0f)
6896                                 continue;
6897                         if (light->shadow && CL_TraceLine(p, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true).fraction < 1)
6898                                 continue;
6899                         // scale down intensity to add to both ambient and diffuse
6900                         //intensity *= 0.5f;
6901                         VectorNormalize(relativepoint);
6902                         VectorScale(light->currentcolor, intensity, color);
6903                         VectorMA(sample    , 0.5f            , color, sample    );
6904                         VectorMA(sample + 3, relativepoint[0], color, sample + 3);
6905                         VectorMA(sample + 6, relativepoint[1], color, sample + 6);
6906                         VectorMA(sample + 9, relativepoint[2], color, sample + 9);
6907                         // calculate a weighted average light direction as well
6908                         intensity *= VectorLength(color);
6909                         VectorMA(sample + 12, intensity, relativepoint, sample + 12);
6910                 }
6911         }
6912
6913         // calculate the direction we'll use to reduce the sample to a directional light source
6914         VectorCopy(sample + 12, dir);
6915         //VectorSet(dir, sample[3] + sample[4] + sample[5], sample[6] + sample[7] + sample[8], sample[9] + sample[10] + sample[11]);
6916         VectorNormalize(dir);
6917         // extract the diffuse color along the chosen direction and scale it
6918         diffuse[0] = (dir[0]*sample[3] + dir[1]*sample[6] + dir[2]*sample[ 9] + sample[ 0]);
6919         diffuse[1] = (dir[0]*sample[4] + dir[1]*sample[7] + dir[2]*sample[10] + sample[ 1]);
6920         diffuse[2] = (dir[0]*sample[5] + dir[1]*sample[8] + dir[2]*sample[11] + sample[ 2]);
6921         // subtract some of diffuse from ambient
6922         VectorMA(sample, -0.333f, diffuse, ambient);
6923         // store the normalized lightdir
6924         VectorCopy(dir, lightdir);
6925 }