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
 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_shadowmode = R_SHADOW_SHADOWMODE_STENCIL;
 456         if ((r_shadow_shadowmapping.integer || r_shadow_deferred.integer) && vid.support.ext_framebuffer_object)
 457         {
 458                 switch(vid.renderpath)
 459                 {
 460                 case RENDERPATH_GL20:
 461                         if(r_shadow_shadowmapfilterquality < 0)
 462                         {
 463                                 if (!r_fb.usedepthtextures)
 464                                         r_shadow_shadowmappcf = 1;
 465                                 else if((strstr(gl_vendor, "NVIDIA") || strstr(gl_renderer, "Radeon HD")) && vid.support.arb_shadow && r_shadow_shadowmapshadowsampler)
 466                                 {
 467                                         r_shadow_shadowmapsampler = true;
 468                                         r_shadow_shadowmappcf = 1;
 469                                 }
 470                 else if(vid.support.amd_texture_texture4 || vid.support.arb_texture_gather)
 471                     r_shadow_shadowmappcf = 1;
 472                                 else if((strstr(gl_vendor, "ATI") || strstr(gl_vendor, "Advanced Micro Devices")) && !strstr(gl_renderer, "Mesa") && !strstr(gl_version, "Mesa"))
 473                                         r_shadow_shadowmappcf = 1;
 474                                 else
 475                                         r_shadow_shadowmapsampler = vid.support.arb_shadow && r_shadow_shadowmapshadowsampler;
 476                         }
 477                         else
 478                         {
 479                                 switch (r_shadow_shadowmapfilterquality)
 480                                 {
 481                                 case 1:
 482                                         r_shadow_shadowmapsampler = vid.support.arb_shadow && r_shadow_shadowmapshadowsampler;
 483                                         break;
 484                                 case 2:
 485                                         r_shadow_shadowmapsampler = vid.support.arb_shadow && r_shadow_shadowmapshadowsampler;
 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);
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.lights_dynamicshadowtriangles += tris;
1400                 r_refdef.stats.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);
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.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);
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);
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);
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.bouncegrid_lights++;
2698                 r_refdef.stats.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.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.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.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.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.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.lights_shadowtriangles += mesh->sidetotals[r_shadow_shadowmapside];
3768                         if (mesh->vertex3fbuffer)
3769                                 R_Mesh_PrepareVertices_Vertex3f(mesh->numverts, mesh->vertex3f, mesh->vertex3fbuffer);
3770                         else
3771                                 R_Mesh_PrepareVertices_Vertex3f(mesh->numverts, mesh->vertex3f, mesh->vbo_vertexbuffer);
3772                         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);
3773                 }
3774                 CHECKGLERROR
3775         }
3776         else if (r_refdef.scene.worldentity->model)
3777                 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);
3778
3779         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3780 }
3781
3782 static void R_Shadow_DrawWorldShadow_ShadowVolume(int numsurfaces, int *surfacelist, const unsigned char *trispvs)
3783 {
3784         qboolean zpass = false;
3785         shadowmesh_t *mesh;
3786         int t, tend;
3787         int surfacelistindex;
3788         msurface_t *surface;
3789
3790         // if triangle neighbors are disabled, shadowvolumes are disabled
3791         if (r_refdef.scene.worldmodel->brush.shadowmesh ? !r_refdef.scene.worldmodel->brush.shadowmesh->neighbor3i : !r_refdef.scene.worldmodel->surfmesh.data_neighbor3i)
3792                 return;
3793
3794         RSurf_ActiveWorldEntity();
3795
3796         if (rsurface.rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
3797         {
3798                 CHECKGLERROR
3799                 if (r_shadow_rendermode != R_SHADOW_RENDERMODE_VISIBLEVOLUMES)
3800                 {
3801                         zpass = R_Shadow_UseZPass(r_refdef.scene.worldmodel->normalmins, r_refdef.scene.worldmodel->normalmaxs);
3802                         R_Shadow_RenderMode_StencilShadowVolumes(zpass);
3803                 }
3804                 mesh = zpass ? rsurface.rtlight->static_meshchain_shadow_zpass : rsurface.rtlight->static_meshchain_shadow_zfail;
3805                 for (;mesh;mesh = mesh->next)
3806                 {
3807                         r_refdef.stats.lights_shadowtriangles += mesh->numtriangles;
3808                         if (mesh->vertex3fbuffer)
3809                                 R_Mesh_PrepareVertices_Vertex3f(mesh->numverts, mesh->vertex3f, mesh->vertex3fbuffer);
3810                         else
3811                                 R_Mesh_PrepareVertices_Vertex3f(mesh->numverts, mesh->vertex3f, mesh->vbo_vertexbuffer);
3812                         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZPASS_STENCIL)
3813                         {
3814                                 // increment stencil if frontface is infront of depthbuffer
3815                                 GL_CullFace(r_refdef.view.cullface_back);
3816                                 R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_INCR, GL_ALWAYS, 128, 255);
3817                                 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);
3818                                 // decrement stencil if backface is infront of depthbuffer
3819                                 GL_CullFace(r_refdef.view.cullface_front);
3820                                 R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_DECR, GL_ALWAYS, 128, 255);
3821                         }
3822                         else if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZFAIL_STENCIL)
3823                         {
3824                                 // decrement stencil if backface is behind depthbuffer
3825                                 GL_CullFace(r_refdef.view.cullface_front);
3826                                 R_SetStencil(true, 255, GL_KEEP, GL_DECR, GL_KEEP, GL_ALWAYS, 128, 255);
3827                                 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);
3828                                 // increment stencil if frontface is behind depthbuffer
3829                                 GL_CullFace(r_refdef.view.cullface_back);
3830                                 R_SetStencil(true, 255, GL_KEEP, GL_INCR, GL_KEEP, GL_ALWAYS, 128, 255);
3831                         }
3832                         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);
3833                 }
3834                 CHECKGLERROR
3835         }
3836         else if (numsurfaces && r_refdef.scene.worldmodel->brush.shadowmesh)
3837         {
3838                 // use the shadow trispvs calculated earlier by GetLightInfo to cull world triangles on this dynamic light
3839                 R_Shadow_PrepareShadowMark(r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles);
3840                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
3841                 {
3842                         surface = r_refdef.scene.worldmodel->data_surfaces + surfacelist[surfacelistindex];
3843                         for (t = surface->num_firstshadowmeshtriangle, tend = t + surface->num_triangles;t < tend;t++)
3844                                 if (CHECKPVSBIT(trispvs, t))
3845                                         shadowmarklist[numshadowmark++] = t;
3846                 }
3847                 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);
3848         }
3849         else if (numsurfaces)
3850         {
3851                 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);
3852         }
3853
3854         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3855 }
3856
3857 static void R_Shadow_DrawEntityShadow(entity_render_t *ent)
3858 {
3859         vec3_t relativeshadoworigin, relativeshadowmins, relativeshadowmaxs;
3860         vec_t relativeshadowradius;
3861         RSurf_ActiveModelEntity(ent, false, false, false);
3862         Matrix4x4_Transform(&ent->inversematrix, rsurface.rtlight->shadoworigin, relativeshadoworigin);
3863         // we need to re-init the shader for each entity because the matrix changed
3864         relativeshadowradius = rsurface.rtlight->radius / ent->scale;
3865         relativeshadowmins[0] = relativeshadoworigin[0] - relativeshadowradius;
3866         relativeshadowmins[1] = relativeshadoworigin[1] - relativeshadowradius;
3867         relativeshadowmins[2] = relativeshadoworigin[2] - relativeshadowradius;
3868         relativeshadowmaxs[0] = relativeshadoworigin[0] + relativeshadowradius;
3869         relativeshadowmaxs[1] = relativeshadoworigin[1] + relativeshadowradius;
3870         relativeshadowmaxs[2] = relativeshadoworigin[2] + relativeshadowradius;
3871         switch (r_shadow_rendermode)
3872         {
3873         case R_SHADOW_RENDERMODE_SHADOWMAP2D:
3874                 ent->model->DrawShadowMap(r_shadow_shadowmapside, ent, relativeshadoworigin, NULL, relativeshadowradius, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, NULL, relativeshadowmins, relativeshadowmaxs);
3875                 break;
3876         default:
3877                 ent->model->DrawShadowVolume(ent, relativeshadoworigin, NULL, relativeshadowradius, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, relativeshadowmins, relativeshadowmaxs);
3878                 break;
3879         }
3880         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3881 }
3882
3883 void R_Shadow_SetupEntityLight(const entity_render_t *ent)
3884 {
3885         // set up properties for rendering light onto this entity
3886         RSurf_ActiveModelEntity(ent, true, true, false);
3887         Matrix4x4_Concat(&rsurface.entitytolight, &rsurface.rtlight->matrix_worldtolight, &ent->matrix);
3888         Matrix4x4_Concat(&rsurface.entitytoattenuationxyz, &matrix_attenuationxyz, &rsurface.entitytolight);
3889         Matrix4x4_Concat(&rsurface.entitytoattenuationz, &matrix_attenuationz, &rsurface.entitytolight);
3890         Matrix4x4_Transform(&ent->inversematrix, rsurface.rtlight->shadoworigin, rsurface.entitylightorigin);
3891 }
3892
3893 static void R_Shadow_DrawWorldLight(int numsurfaces, int *surfacelist, const unsigned char *lighttrispvs)
3894 {
3895         if (!r_refdef.scene.worldmodel->DrawLight)
3896                 return;
3897
3898         // set up properties for rendering light onto this entity
3899         RSurf_ActiveWorldEntity();
3900         rsurface.entitytolight = rsurface.rtlight->matrix_worldtolight;
3901         Matrix4x4_Concat(&rsurface.entitytoattenuationxyz, &matrix_attenuationxyz, &rsurface.entitytolight);
3902         Matrix4x4_Concat(&rsurface.entitytoattenuationz, &matrix_attenuationz, &rsurface.entitytolight);
3903         VectorCopy(rsurface.rtlight->shadoworigin, rsurface.entitylightorigin);
3904
3905         r_refdef.scene.worldmodel->DrawLight(r_refdef.scene.worldentity, numsurfaces, surfacelist, lighttrispvs);
3906
3907         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3908 }
3909
3910 static void R_Shadow_DrawEntityLight(entity_render_t *ent)
3911 {
3912         dp_model_t *model = ent->model;
3913         if (!model->DrawLight)
3914                 return;
3915
3916         R_Shadow_SetupEntityLight(ent);
3917
3918         model->DrawLight(ent, model->nummodelsurfaces, model->sortedmodelsurfaces, NULL);
3919
3920         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3921 }
3922
3923 static void R_Shadow_PrepareLight(rtlight_t *rtlight)
3924 {
3925         int i;
3926         float f;
3927         int numleafs, numsurfaces;
3928         int *leaflist, *surfacelist;
3929         unsigned char *leafpvs;
3930         unsigned char *shadowtrispvs;
3931         unsigned char *lighttrispvs;
3932         //unsigned char *surfacesides;
3933         int numlightentities;
3934         int numlightentities_noselfshadow;
3935         int numshadowentities;
3936         int numshadowentities_noselfshadow;
3937         static entity_render_t *lightentities[MAX_EDICTS];
3938         static entity_render_t *lightentities_noselfshadow[MAX_EDICTS];
3939         static entity_render_t *shadowentities[MAX_EDICTS];
3940         static entity_render_t *shadowentities_noselfshadow[MAX_EDICTS];
3941         qboolean nolight;
3942
3943         rtlight->draw = false;
3944         rtlight->cached_numlightentities               = 0;
3945         rtlight->cached_numlightentities_noselfshadow  = 0;
3946         rtlight->cached_numshadowentities              = 0;
3947         rtlight->cached_numshadowentities_noselfshadow = 0;
3948         rtlight->cached_numsurfaces                    = 0;
3949         rtlight->cached_lightentities                  = NULL;
3950         rtlight->cached_lightentities_noselfshadow     = NULL;
3951         rtlight->cached_shadowentities                 = NULL;
3952         rtlight->cached_shadowentities_noselfshadow    = NULL;
3953         rtlight->cached_shadowtrispvs                  = NULL;
3954         rtlight->cached_lighttrispvs                   = NULL;
3955         rtlight->cached_surfacelist                    = NULL;
3956
3957         // skip lights that don't light because of ambientscale+diffusescale+specularscale being 0 (corona only lights)
3958         // skip lights that are basically invisible (color 0 0 0)
3959         nolight = VectorLength2(rtlight->color) * (rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale) < (1.0f / 1048576.0f);
3960
3961         // loading is done before visibility checks because loading should happen
3962         // all at once at the start of a level, not when it stalls gameplay.
3963         // (especially important to benchmarks)
3964         // compile light
3965         if (rtlight->isstatic && !nolight && (!rtlight->compiled || (rtlight->shadow && rtlight->shadowmode != (int)r_shadow_shadowmode)) && r_shadow_realtime_world_compile.integer)
3966         {
3967                 if (rtlight->compiled)
3968                         R_RTLight_Uncompile(rtlight);
3969                 R_RTLight_Compile(rtlight);
3970         }
3971
3972         // load cubemap
3973         rtlight->currentcubemap = rtlight->cubemapname[0] ? R_GetCubemap(rtlight->cubemapname) : r_texture_whitecube;
3974
3975         // look up the light style value at this time
3976         f = (rtlight->style >= 0 ? r_refdef.scene.rtlightstylevalue[rtlight->style] : 1) * r_shadow_lightintensityscale.value;
3977         VectorScale(rtlight->color, f, rtlight->currentcolor);
3978         /*
3979         if (rtlight->selected)
3980         {
3981                 f = 2 + sin(realtime * M_PI * 4.0);
3982                 VectorScale(rtlight->currentcolor, f, rtlight->currentcolor);
3983         }
3984         */
3985
3986         // if lightstyle is currently off, don't draw the light
3987         if (VectorLength2(rtlight->currentcolor) < (1.0f / 1048576.0f))
3988                 return;
3989
3990         // skip processing on corona-only lights
3991         if (nolight)
3992                 return;
3993
3994         // if the light box is offscreen, skip it
3995         if (R_CullBox(rtlight->cullmins, rtlight->cullmaxs))
3996                 return;
3997
3998         VectorCopy(rtlight->cullmins, rtlight->cached_cullmins);
3999         VectorCopy(rtlight->cullmaxs, rtlight->cached_cullmaxs);
4000
4001         R_Shadow_ComputeShadowCasterCullingPlanes(rtlight);
4002
4003         // 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
4004         if (r_shadow_bouncegrid.integer == 2 && (rtlight->isstatic || !r_shadow_bouncegrid_static.integer))
4005                 return;
4006
4007         if (rtlight->compiled && r_shadow_realtime_world_compile.integer)
4008         {
4009                 // compiled light, world available and can receive realtime lighting
4010                 // retrieve leaf information
4011                 numleafs = rtlight->static_numleafs;
4012                 leaflist = rtlight->static_leaflist;
4013                 leafpvs = rtlight->static_leafpvs;
4014                 numsurfaces = rtlight->static_numsurfaces;
4015                 surfacelist = rtlight->static_surfacelist;
4016                 //surfacesides = NULL;
4017                 shadowtrispvs = rtlight->static_shadowtrispvs;
4018                 lighttrispvs = rtlight->static_lighttrispvs;
4019         }
4020         else if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->GetLightInfo)
4021         {
4022                 // dynamic light, world available and can receive realtime lighting
4023                 // calculate lit surfaces and leafs
4024                 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);
4025                 R_Shadow_ComputeShadowCasterCullingPlanes(rtlight);
4026                 leaflist = r_shadow_buffer_leaflist;
4027                 leafpvs = r_shadow_buffer_leafpvs;
4028                 surfacelist = r_shadow_buffer_surfacelist;
4029                 //surfacesides = r_shadow_buffer_surfacesides;
4030                 shadowtrispvs = r_shadow_buffer_shadowtrispvs;
4031                 lighttrispvs = r_shadow_buffer_lighttrispvs;
4032                 // if the reduced leaf bounds are offscreen, skip it
4033                 if (R_CullBox(rtlight->cached_cullmins, rtlight->cached_cullmaxs))
4034                         return;
4035         }
4036         else
4037         {
4038                 // no world
4039                 numleafs = 0;
4040                 leaflist = NULL;
4041                 leafpvs = NULL;
4042                 numsurfaces = 0;
4043                 surfacelist = NULL;
4044                 //surfacesides = NULL;
4045                 shadowtrispvs = NULL;
4046                 lighttrispvs = NULL;
4047         }
4048         // check if light is illuminating any visible leafs
4049         if (numleafs)
4050         {
4051                 for (i = 0;i < numleafs;i++)
4052                         if (r_refdef.viewcache.world_leafvisible[leaflist[i]])
4053                                 break;
4054                 if (i == numleafs)
4055                         return;
4056         }
4057
4058         // make a list of lit entities and shadow casting entities
4059         numlightentities = 0;
4060         numlightentities_noselfshadow = 0;
4061         numshadowentities = 0;
4062         numshadowentities_noselfshadow = 0;
4063
4064         // add dynamic entities that are lit by the light
4065         for (i = 0;i < r_refdef.scene.numentities;i++)
4066         {
4067                 dp_model_t *model;
4068                 entity_render_t *ent = r_refdef.scene.entities[i];
4069                 vec3_t org;
4070                 if (!BoxesOverlap(ent->mins, ent->maxs, rtlight->cached_cullmins, rtlight->cached_cullmaxs))
4071                         continue;
4072                 // skip the object entirely if it is not within the valid
4073                 // shadow-casting region (which includes the lit region)
4074                 if (R_CullBoxCustomPlanes(ent->mins, ent->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
4075                         continue;
4076                 if (!(model = ent->model))
4077                         continue;
4078                 if (r_refdef.viewcache.entityvisible[i] && model->DrawLight && (ent->flags & RENDER_LIGHT))
4079                 {
4080                         // this entity wants to receive light, is visible, and is
4081                         // inside the light box
4082                         // TODO: check if the surfaces in the model can receive light
4083                         // so now check if it's in a leaf seen by the light
4084                         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))
4085                                 continue;
4086                         if (ent->flags & RENDER_NOSELFSHADOW)
4087                                 lightentities_noselfshadow[numlightentities_noselfshadow++] = ent;
4088                         else
4089                                 lightentities[numlightentities++] = ent;
4090                         // since it is lit, it probably also casts a shadow...
4091                         // about the VectorDistance2 - light emitting entities should not cast their own shadow
4092                         Matrix4x4_OriginFromMatrix(&ent->matrix, org);
4093                         if ((ent->flags & RENDER_SHADOW) && model->DrawShadowVolume && VectorDistance2(org, rtlight->shadoworigin) > 0.1)
4094                         {
4095                                 // note: exterior models without the RENDER_NOSELFSHADOW
4096                                 // flag still create a RENDER_NOSELFSHADOW shadow but
4097                                 // are lit normally, this means that they are
4098                                 // self-shadowing but do not shadow other
4099                                 // RENDER_NOSELFSHADOW entities such as the gun
4100                                 // (very weird, but keeps the player shadow off the gun)
4101                                 if (ent->flags & (RENDER_NOSELFSHADOW | RENDER_EXTERIORMODEL))
4102                                         shadowentities_noselfshadow[numshadowentities_noselfshadow++] = ent;
4103                                 else
4104                                         shadowentities[numshadowentities++] = ent;
4105                         }
4106                 }
4107                 else if (ent->flags & RENDER_SHADOW)
4108                 {
4109                         // this entity is not receiving light, but may still need to
4110                         // cast a shadow...
4111                         // TODO: check if the surfaces in the model can cast shadow
4112                         // now check if it is in a leaf seen by the light
4113                         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))
4114                                 continue;
4115                         // about the VectorDistance2 - light emitting entities should not cast their own shadow
4116                         Matrix4x4_OriginFromMatrix(&ent->matrix, org);
4117                         if ((ent->flags & RENDER_SHADOW) && model->DrawShadowVolume && VectorDistance2(org, rtlight->shadoworigin) > 0.1)
4118                         {
4119                                 if (ent->flags & (RENDER_NOSELFSHADOW | RENDER_EXTERIORMODEL))
4120                                         shadowentities_noselfshadow[numshadowentities_noselfshadow++] = ent;
4121                                 else
4122                                         shadowentities[numshadowentities++] = ent;
4123                         }
4124                 }
4125         }
4126
4127         // return if there's nothing at all to light
4128         if (numsurfaces + numlightentities + numlightentities_noselfshadow == 0)
4129                 return;
4130
4131         // count this light in the r_speeds
4132         r_refdef.stats.lights++;
4133
4134         // flag it as worth drawing later
4135         rtlight->draw = true;
4136
4137         // cache all the animated entities that cast a shadow but are not visible
4138         for (i = 0;i < numshadowentities;i++)
4139                 if (!shadowentities[i]->animcache_vertex3f)
4140                         R_AnimCache_GetEntity(shadowentities[i], false, false);
4141         for (i = 0;i < numshadowentities_noselfshadow;i++)
4142                 if (!shadowentities_noselfshadow[i]->animcache_vertex3f)
4143                         R_AnimCache_GetEntity(shadowentities_noselfshadow[i], false, false);
4144
4145         // allocate some temporary memory for rendering this light later in the frame
4146         // reusable buffers need to be copied, static data can be used as-is
4147         rtlight->cached_numlightentities               = numlightentities;
4148         rtlight->cached_numlightentities_noselfshadow  = numlightentities_noselfshadow;
4149         rtlight->cached_numshadowentities              = numshadowentities;
4150         rtlight->cached_numshadowentities_noselfshadow = numshadowentities_noselfshadow;
4151         rtlight->cached_numsurfaces                    = numsurfaces;
4152         rtlight->cached_lightentities                  = (entity_render_t**)R_FrameData_Store(numlightentities*sizeof(entity_render_t*), (void*)lightentities);
4153         rtlight->cached_lightentities_noselfshadow     = (entity_render_t**)R_FrameData_Store(numlightentities_noselfshadow*sizeof(entity_render_t*), (void*)lightentities_noselfshadow);
4154         rtlight->cached_shadowentities                 = (entity_render_t**)R_FrameData_Store(numshadowentities*sizeof(entity_render_t*), (void*)shadowentities);
4155         rtlight->cached_shadowentities_noselfshadow    = (entity_render_t**)R_FrameData_Store(numshadowentities_noselfshadow*sizeof(entity_render_t *), (void*)shadowentities_noselfshadow);
4156         if (shadowtrispvs == r_shadow_buffer_shadowtrispvs)
4157         {
4158                 int numshadowtrispvsbytes = (((r_refdef.scene.worldmodel->brush.shadowmesh ? r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles : r_refdef.scene.worldmodel->surfmesh.num_triangles) + 7) >> 3);
4159                 int numlighttrispvsbytes = ((r_refdef.scene.worldmodel->surfmesh.num_triangles + 7) >> 3);
4160                 rtlight->cached_shadowtrispvs                  =   (unsigned char *)R_FrameData_Store(numshadowtrispvsbytes, shadowtrispvs);
4161                 rtlight->cached_lighttrispvs                   =   (unsigned char *)R_FrameData_Store(numlighttrispvsbytes, lighttrispvs);
4162                 rtlight->cached_surfacelist                    =              (int*)R_FrameData_Store(numsurfaces*sizeof(int), (void*)surfacelist);
4163         }
4164         else
4165         {
4166                 // compiled light data
4167                 rtlight->cached_shadowtrispvs = shadowtrispvs;
4168                 rtlight->cached_lighttrispvs = lighttrispvs;
4169                 rtlight->cached_surfacelist = surfacelist;
4170         }
4171 }
4172
4173 static void R_Shadow_DrawLight(rtlight_t *rtlight)
4174 {
4175         int i;
4176         int numsurfaces;
4177         unsigned char *shadowtrispvs, *lighttrispvs, *surfacesides;
4178         int numlightentities;
4179         int numlightentities_noselfshadow;
4180         int numshadowentities;
4181         int numshadowentities_noselfshadow;
4182         entity_render_t **lightentities;
4183         entity_render_t **lightentities_noselfshadow;
4184         entity_render_t **shadowentities;
4185         entity_render_t **shadowentities_noselfshadow;
4186         int *surfacelist;
4187         static unsigned char entitysides[MAX_EDICTS];
4188         static unsigned char entitysides_noselfshadow[MAX_EDICTS];
4189         vec3_t nearestpoint;
4190         vec_t distance;
4191         qboolean castshadows;
4192         int lodlinear;
4193
4194         // check if we cached this light this frame (meaning it is worth drawing)
4195         if (!rtlight->draw)
4196                 return;
4197
4198         numlightentities = rtlight->cached_numlightentities;
4199         numlightentities_noselfshadow = rtlight->cached_numlightentities_noselfshadow;
4200         numshadowentities = rtlight->cached_numshadowentities;
4201         numshadowentities_noselfshadow = rtlight->cached_numshadowentities_noselfshadow;
4202         numsurfaces = rtlight->cached_numsurfaces;
4203         lightentities = rtlight->cached_lightentities;
4204         lightentities_noselfshadow = rtlight->cached_lightentities_noselfshadow;
4205         shadowentities = rtlight->cached_shadowentities;
4206         shadowentities_noselfshadow = rtlight->cached_shadowentities_noselfshadow;
4207         shadowtrispvs = rtlight->cached_shadowtrispvs;
4208         lighttrispvs = rtlight->cached_lighttrispvs;
4209         surfacelist = rtlight->cached_surfacelist;
4210
4211         // set up a scissor rectangle for this light
4212         if (R_Shadow_ScissorForBBox(rtlight->cached_cullmins, rtlight->cached_cullmaxs))
4213                 return;
4214
4215         // don't let sound skip if going slow
4216         if (r_refdef.scene.extraupdate)
4217                 S_ExtraUpdate ();
4218
4219         // make this the active rtlight for rendering purposes
4220         R_Shadow_RenderMode_ActiveLight(rtlight);
4221
4222         if (r_showshadowvolumes.integer && r_refdef.view.showdebug && numsurfaces + numshadowentities + numshadowentities_noselfshadow && rtlight->shadow && (rtlight->isstatic ? r_refdef.scene.rtworldshadows : r_refdef.scene.rtdlightshadows))
4223         {
4224                 // optionally draw visible shape of the shadow volumes
4225                 // for performance analysis by level designers
4226                 R_Shadow_RenderMode_VisibleShadowVolumes();
4227                 if (numsurfaces)
4228                         R_Shadow_DrawWorldShadow_ShadowVolume(numsurfaces, surfacelist, shadowtrispvs);
4229                 for (i = 0;i < numshadowentities;i++)
4230                         R_Shadow_DrawEntityShadow(shadowentities[i]);
4231                 for (i = 0;i < numshadowentities_noselfshadow;i++)
4232                         R_Shadow_DrawEntityShadow(shadowentities_noselfshadow[i]);
4233                 R_Shadow_RenderMode_VisibleLighting(false, false);
4234         }
4235
4236         if (r_showlighting.integer && r_refdef.view.showdebug && numsurfaces + numlightentities + numlightentities_noselfshadow)
4237         {
4238                 // optionally draw the illuminated areas
4239                 // for performance analysis by level designers
4240                 R_Shadow_RenderMode_VisibleLighting(false, false);
4241                 if (numsurfaces)
4242                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
4243                 for (i = 0;i < numlightentities;i++)
4244                         R_Shadow_DrawEntityLight(lightentities[i]);
4245                 for (i = 0;i < numlightentities_noselfshadow;i++)
4246                         R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
4247         }
4248
4249         castshadows = numsurfaces + numshadowentities + numshadowentities_noselfshadow > 0 && rtlight->shadow && (rtlight->isstatic ? r_refdef.scene.rtworldshadows : r_refdef.scene.rtdlightshadows);
4250
4251         nearestpoint[0] = bound(rtlight->cullmins[0], r_refdef.view.origin[0], rtlight->cullmaxs[0]);
4252         nearestpoint[1] = bound(rtlight->cullmins[1], r_refdef.view.origin[1], rtlight->cullmaxs[1]);
4253         nearestpoint[2] = bound(rtlight->cullmins[2], r_refdef.view.origin[2], rtlight->cullmaxs[2]);
4254         distance = VectorDistance(nearestpoint, r_refdef.view.origin);
4255
4256         lodlinear = (rtlight->radius * r_shadow_shadowmapping_precision.value) / sqrt(max(1.0f, distance/rtlight->radius));
4257         //lodlinear = (int)(r_shadow_shadowmapping_lod_bias.value + r_shadow_shadowmapping_lod_scale.value * rtlight->radius / max(1.0f, distance));
4258         lodlinear = bound(r_shadow_shadowmapping_minsize.integer, lodlinear, r_shadow_shadowmapmaxsize);
4259
4260         if (castshadows && r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAP2D)
4261         {
4262                 float borderbias;
4263                 int side;
4264                 int size;
4265                 int castermask = 0;
4266                 int receivermask = 0;
4267                 matrix4x4_t radiustolight = rtlight->matrix_worldtolight;
4268                 Matrix4x4_Abs(&radiustolight);
4269
4270                 r_shadow_shadowmaplod = 0;
4271                 for (i = 1;i < R_SHADOW_SHADOWMAP_NUMCUBEMAPS;i++)
4272                         if ((r_shadow_shadowmapmaxsize >> i) > lodlinear)
4273                                 r_shadow_shadowmaplod = i;
4274
4275                 size = bound(r_shadow_shadowmapborder, lodlinear, r_shadow_shadowmapmaxsize);
4276
4277                 borderbias = r_shadow_shadowmapborder / (float)(size - r_shadow_shadowmapborder);
4278
4279                 surfacesides = NULL;
4280                 if (numsurfaces)
4281                 {
4282                         if (rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
4283                         {
4284                                 castermask = rtlight->static_shadowmap_casters;
4285                                 receivermask = rtlight->static_shadowmap_receivers;
4286                         }
4287                         else
4288                         {
4289                                 surfacesides = r_shadow_buffer_surfacesides;
4290                                 for(i = 0;i < numsurfaces;i++)
4291                                 {
4292                                         msurface_t *surface = r_refdef.scene.worldmodel->data_surfaces + surfacelist[i];
4293                                         surfacesides[i] = R_Shadow_CalcBBoxSideMask(surface->mins, surface->maxs, &rtlight->matrix_worldtolight, &radiustolight, borderbias);
4294                                         castermask |= surfacesides[i];
4295                                         receivermask |= surfacesides[i];
4296                                 }
4297                         }
4298                 }
4299                 if (receivermask < 0x3F)
4300                 {
4301                         for (i = 0;i < numlightentities;i++)
4302                                 receivermask |= R_Shadow_CalcEntitySideMask(lightentities[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias);
4303                         if (receivermask < 0x3F)
4304                                 for(i = 0; i < numlightentities_noselfshadow;i++)
4305                                         receivermask |= R_Shadow_CalcEntitySideMask(lightentities_noselfshadow[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias);
4306                 }
4307
4308                 receivermask &= R_Shadow_CullFrustumSides(rtlight, size, r_shadow_shadowmapborder);
4309
4310                 if (receivermask)
4311                 {
4312                         for (i = 0;i < numshadowentities;i++)
4313                                 castermask |= (entitysides[i] = R_Shadow_CalcEntitySideMask(shadowentities[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias));
4314                         for (i = 0;i < numshadowentities_noselfshadow;i++)
4315                                 castermask |= (entitysides_noselfshadow[i] = R_Shadow_CalcEntitySideMask(shadowentities_noselfshadow[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias));
4316                 }
4317
4318                 //Con_Printf("distance %f lodlinear %i (lod %i) size %i\n", distance, lodlinear, r_shadow_shadowmaplod, size);
4319
4320                 // render shadow casters into 6 sided depth texture
4321                 for (side = 0;side < 6;side++) if (receivermask & (1 << side))
4322                 {
4323                         R_Shadow_RenderMode_ShadowMap(side, receivermask, size);
4324                         if (! (castermask & (1 << side))) continue;
4325                         if (numsurfaces)
4326                                 R_Shadow_DrawWorldShadow_ShadowMap(numsurfaces, surfacelist, shadowtrispvs, surfacesides);
4327                         for (i = 0;i < numshadowentities;i++) if (entitysides[i] & (1 << side))
4328                                 R_Shadow_DrawEntityShadow(shadowentities[i]);
4329                 }
4330
4331                 if (numlightentities_noselfshadow)
4332                 {
4333                         // render lighting using the depth texture as shadowmap
4334                         // draw lighting in the unmasked areas
4335                         R_Shadow_RenderMode_Lighting(false, false, true);
4336                         for (i = 0;i < numlightentities_noselfshadow;i++)
4337                                 R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
4338                 }
4339
4340                 // render shadow casters into 6 sided depth texture
4341                 if (numshadowentities_noselfshadow)
4342                 {
4343                         for (side = 0;side < 6;side++) if ((receivermask & castermask) & (1 << side))
4344                         {
4345                                 R_Shadow_RenderMode_ShadowMap(side, 0, size);
4346                                 for (i = 0;i < numshadowentities_noselfshadow;i++) if (entitysides_noselfshadow[i] & (1 << side))
4347                                         R_Shadow_DrawEntityShadow(shadowentities_noselfshadow[i]);
4348                         }
4349                 }
4350
4351                 // render lighting using the depth texture as shadowmap
4352                 // draw lighting in the unmasked areas
4353                 R_Shadow_RenderMode_Lighting(false, false, true);
4354                 // draw lighting in the unmasked areas
4355                 if (numsurfaces)
4356                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
4357                 for (i = 0;i < numlightentities;i++)
4358                         R_Shadow_DrawEntityLight(lightentities[i]);
4359         }
4360         else if (castshadows && vid.stencil)
4361         {
4362                 // draw stencil shadow volumes to mask off pixels that are in shadow
4363                 // so that they won't receive lighting
4364                 GL_Scissor(r_shadow_lightscissor[0], r_shadow_lightscissor[1], r_shadow_lightscissor[2], r_shadow_lightscissor[3]);
4365                 R_Shadow_ClearStencil();
4366
4367                 if (numsurfaces)
4368                         R_Shadow_DrawWorldShadow_ShadowVolume(numsurfaces, surfacelist, shadowtrispvs);
4369                 for (i = 0;i < numshadowentities;i++)
4370                         R_Shadow_DrawEntityShadow(shadowentities[i]);
4371
4372                 // draw lighting in the unmasked areas
4373                 R_Shadow_RenderMode_Lighting(true, false, false);
4374                 for (i = 0;i < numlightentities_noselfshadow;i++)
4375                         R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
4376
4377                 for (i = 0;i < numshadowentities_noselfshadow;i++)
4378                         R_Shadow_DrawEntityShadow(shadowentities_noselfshadow[i]);
4379
4380                 // draw lighting in the unmasked areas
4381                 R_Shadow_RenderMode_Lighting(true, false, false);
4382                 if (numsurfaces)
4383                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
4384                 for (i = 0;i < numlightentities;i++)
4385                         R_Shadow_DrawEntityLight(lightentities[i]);
4386         }
4387         else
4388         {
4389                 // draw lighting in the unmasked areas
4390                 R_Shadow_RenderMode_Lighting(false, false, false);
4391                 if (numsurfaces)
4392                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
4393                 for (i = 0;i < numlightentities;i++)
4394                         R_Shadow_DrawEntityLight(lightentities[i]);
4395                 for (i = 0;i < numlightentities_noselfshadow;i++)
4396                         R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
4397         }
4398
4399         if (r_shadow_usingdeferredprepass)
4400         {
4401                 // when rendering deferred lighting, we simply rasterize the box
4402                 if (castshadows && r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAP2D)
4403                         R_Shadow_RenderMode_DrawDeferredLight(false, true);
4404                 else if (castshadows && vid.stencil)
4405                         R_Shadow_RenderMode_DrawDeferredLight(true, false);
4406                 else
4407                         R_Shadow_RenderMode_DrawDeferredLight(false, false);
4408         }
4409 }
4410
4411 static void R_Shadow_FreeDeferred(void)
4412 {
4413         R_Mesh_DestroyFramebufferObject(r_shadow_prepassgeometryfbo);
4414         r_shadow_prepassgeometryfbo = 0;
4415
4416         R_Mesh_DestroyFramebufferObject(r_shadow_prepasslightingdiffusespecularfbo);
4417         r_shadow_prepasslightingdiffusespecularfbo = 0;
4418
4419         R_Mesh_DestroyFramebufferObject(r_shadow_prepasslightingdiffusefbo);
4420         r_shadow_prepasslightingdiffusefbo = 0;
4421
4422         if (r_shadow_prepassgeometrydepthbuffer)
4423                 R_FreeTexture(r_shadow_prepassgeometrydepthbuffer);
4424         r_shadow_prepassgeometrydepthbuffer = NULL;
4425
4426         if (r_shadow_prepassgeometrynormalmaptexture)
4427                 R_FreeTexture(r_shadow_prepassgeometrynormalmaptexture);
4428         r_shadow_prepassgeometrynormalmaptexture = NULL;
4429
4430         if (r_shadow_prepasslightingdiffusetexture)
4431                 R_FreeTexture(r_shadow_prepasslightingdiffusetexture);
4432         r_shadow_prepasslightingdiffusetexture = NULL;
4433
4434         if (r_shadow_prepasslightingspeculartexture)
4435                 R_FreeTexture(r_shadow_prepasslightingspeculartexture);
4436         r_shadow_prepasslightingspeculartexture = NULL;
4437 }
4438
4439 void R_Shadow_DrawPrepass(void)
4440 {
4441         int i;
4442         int flag;
4443         int lnum;
4444         size_t lightindex;
4445         dlight_t *light;
4446         size_t range;
4447         entity_render_t *ent;
4448         float clearcolor[4];
4449
4450         R_Mesh_ResetTextureState();
4451         GL_DepthMask(true);
4452         GL_ColorMask(1,1,1,1);
4453         GL_BlendFunc(GL_ONE, GL_ZERO);
4454         GL_Color(1,1,1,1);
4455         GL_DepthTest(true);
4456         R_Mesh_SetRenderTargets(r_shadow_prepassgeometryfbo, r_shadow_prepassgeometrydepthbuffer, r_shadow_prepassgeometrynormalmaptexture, NULL, NULL, NULL);
4457         Vector4Set(clearcolor, 0.5f,0.5f,0.5f,1.0f);
4458         GL_Clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
4459         if (r_timereport_active)
4460                 R_TimeReport("prepasscleargeom");
4461
4462         if (cl.csqc_vidvars.drawworld && r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->DrawPrepass)
4463                 r_refdef.scene.worldmodel->DrawPrepass(r_refdef.scene.worldentity);
4464         if (r_timereport_active)
4465                 R_TimeReport("prepassworld");
4466
4467         for (i = 0;i < r_refdef.scene.numentities;i++)
4468         {
4469                 if (!r_refdef.viewcache.entityvisible[i])
4470                         continue;
4471                 ent = r_refdef.scene.entities[i];
4472                 if (ent->model && ent->model->DrawPrepass != NULL)
4473                         ent->model->DrawPrepass(ent);
4474         }
4475
4476         if (r_timereport_active)
4477                 R_TimeReport("prepassmodels");
4478
4479         GL_DepthMask(false);
4480         GL_ColorMask(1,1,1,1);
4481         GL_Color(1,1,1,1);
4482         GL_DepthTest(true);
4483         R_Mesh_SetRenderTargets(r_shadow_prepasslightingdiffusespecularfbo, r_shadow_prepassgeometrydepthbuffer, r_shadow_prepasslightingdiffusetexture, r_shadow_prepasslightingspeculartexture, NULL, NULL);
4484         Vector4Set(clearcolor, 0, 0, 0, 0);
4485         GL_Clear(GL_COLOR_BUFFER_BIT, clearcolor, 1.0f, 0);
4486         if (r_timereport_active)
4487                 R_TimeReport("prepassclearlit");
4488
4489         R_Shadow_RenderMode_Begin();
4490
4491         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
4492         if (r_shadow_debuglight.integer >= 0)
4493         {
4494                 lightindex = r_shadow_debuglight.integer;
4495                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4496                 if (light && (light->flags & flag) && light->rtlight.draw)
4497                         R_Shadow_DrawLight(&light->rtlight);
4498         }
4499         else
4500         {
4501                 range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4502                 for (lightindex = 0;lightindex < range;lightindex++)
4503                 {
4504                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4505                         if (light && (light->flags & flag) && light->rtlight.draw)
4506                                 R_Shadow_DrawLight(&light->rtlight);
4507                 }
4508         }
4509         if (r_refdef.scene.rtdlight)
4510                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
4511                         if (r_refdef.scene.lights[lnum]->draw)
4512                                 R_Shadow_DrawLight(r_refdef.scene.lights[lnum]);
4513
4514         R_Shadow_RenderMode_End();
4515
4516         if (r_timereport_active)
4517                 R_TimeReport("prepasslights");
4518 }
4519
4520 void R_Shadow_DrawLightSprites(void);
4521 void R_Shadow_PrepareLights(int fbo, rtexture_t *depthtexture, rtexture_t *colortexture)
4522 {
4523         int flag;
4524         int lnum;
4525         size_t lightindex;
4526         dlight_t *light;
4527         size_t range;
4528         float f;
4529
4530         if (r_shadow_shadowmapmaxsize != bound(1, r_shadow_shadowmapping_maxsize.integer, (int)vid.maxtexturesize_2d / 4) ||
4531                 (r_shadow_shadowmode != R_SHADOW_SHADOWMODE_STENCIL) != (r_shadow_shadowmapping.integer || r_shadow_deferred.integer) ||
4532                 r_shadow_shadowmapvsdct != (r_shadow_shadowmapping_vsdct.integer != 0 && vid.renderpath == RENDERPATH_GL20) ||
4533                 r_shadow_shadowmapfilterquality != r_shadow_shadowmapping_filterquality.integer ||
4534                 r_shadow_shadowmapshadowsampler != (vid.support.arb_shadow && r_shadow_shadowmapping_useshadowsampler.integer) ||
4535                 r_shadow_shadowmapdepthbits != r_shadow_shadowmapping_depthbits.integer ||
4536                 r_shadow_shadowmapborder != bound(0, r_shadow_shadowmapping_bordersize.integer, 16))
4537                 R_Shadow_FreeShadowMaps();
4538
4539         r_shadow_fb_fbo = fbo;
4540         r_shadow_fb_depthtexture = depthtexture;
4541         r_shadow_fb_colortexture = colortexture;
4542
4543         r_shadow_usingshadowmaportho = false;
4544
4545         switch (vid.renderpath)
4546         {
4547         case RENDERPATH_GL20:
4548         case RENDERPATH_D3D9:
4549         case RENDERPATH_D3D10:
4550         case RENDERPATH_D3D11:
4551         case RENDERPATH_SOFT:
4552 #ifndef USE_GLES2
4553                 if (!r_shadow_deferred.integer || r_shadow_shadowmode == R_SHADOW_SHADOWMODE_STENCIL || !vid.support.ext_framebuffer_object || vid.maxdrawbuffers < 2)
4554                 {
4555                         r_shadow_usingdeferredprepass = false;
4556                         if (r_shadow_prepass_width)
4557                                 R_Shadow_FreeDeferred();
4558                         r_shadow_prepass_width = r_shadow_prepass_height = 0;
4559                         break;
4560                 }
4561
4562                 if (r_shadow_prepass_width != vid.width || r_shadow_prepass_height != vid.height)
4563                 {
4564                         R_Shadow_FreeDeferred();
4565
4566                         r_shadow_usingdeferredprepass = true;
4567                         r_shadow_prepass_width = vid.width;
4568                         r_shadow_prepass_height = vid.height;
4569                         r_shadow_prepassgeometrydepthbuffer = R_LoadTextureRenderBuffer(r_shadow_texturepool, "prepassgeometrydepthbuffer", vid.width, vid.height, TEXTYPE_DEPTHBUFFER24);
4570                         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);
4571                         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);
4572                         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);
4573
4574                         // set up the geometry pass fbo (depth + normalmap)
4575                         r_shadow_prepassgeometryfbo = R_Mesh_CreateFramebufferObject(r_shadow_prepassgeometrydepthbuffer, r_shadow_prepassgeometrynormalmaptexture, NULL, NULL, NULL);
4576                         R_Mesh_SetRenderTargets(r_shadow_prepassgeometryfbo, r_shadow_prepassgeometrydepthbuffer, r_shadow_prepassgeometrynormalmaptexture, NULL, NULL, NULL);
4577                         // render depth into a renderbuffer and other important properties into the normalmap texture
4578
4579                         // set up the lighting pass fbo (diffuse + specular)
4580                         r_shadow_prepasslightingdiffusespecularfbo = R_Mesh_CreateFramebufferObject(r_shadow_prepassgeometrydepthbuffer, r_shadow_prepasslightingdiffusetexture, r_shadow_prepasslightingspeculartexture, NULL, NULL);
4581                         R_Mesh_SetRenderTargets(r_shadow_prepasslightingdiffusespecularfbo, r_shadow_prepassgeometrydepthbuffer, r_shadow_prepasslightingdiffusetexture, r_shadow_prepasslightingspeculartexture, NULL, NULL);
4582                         // render diffuse into one texture and specular into another,
4583                         // with depth and normalmap bound as textures,
4584                         // with depth bound as attachment as well
4585
4586                         // set up the lighting pass fbo (diffuse)
4587                         r_shadow_prepasslightingdiffusefbo = R_Mesh_CreateFramebufferObject(r_shadow_prepassgeometrydepthbuffer, r_shadow_prepasslightingdiffusetexture, NULL, NULL, NULL);
4588                         R_Mesh_SetRenderTargets(r_shadow_prepasslightingdiffusefbo, r_shadow_prepassgeometrydepthbuffer, r_shadow_prepasslightingdiffusetexture, NULL, NULL, NULL);
4589                         // render diffuse into one texture,
4590                         // with depth and normalmap bound as textures,
4591                         // with depth bound as attachment as well
4592                 }
4593 #endif
4594                 break;
4595         case RENDERPATH_GL11:
4596         case RENDERPATH_GL13:
4597         case RENDERPATH_GLES1:
4598         case RENDERPATH_GLES2:
4599                 r_shadow_usingdeferredprepass = false;
4600                 break;
4601         }
4602
4603         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);
4604
4605         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
4606         if (r_shadow_debuglight.integer >= 0)
4607         {
4608                 lightindex = r_shadow_debuglight.integer;
4609                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4610                 if (light)
4611                         R_Shadow_PrepareLight(&light->rtlight);
4612         }
4613         else
4614         {
4615                 range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4616                 for (lightindex = 0;lightindex < range;lightindex++)
4617                 {
4618                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4619                         if (light && (light->flags & flag))
4620                                 R_Shadow_PrepareLight(&light->rtlight);
4621                 }
4622         }
4623         if (r_refdef.scene.rtdlight)
4624         {
4625                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
4626                         R_Shadow_PrepareLight(r_refdef.scene.lights[lnum]);
4627         }
4628         else if(gl_flashblend.integer)
4629         {
4630                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
4631                 {
4632                         rtlight_t *rtlight = r_refdef.scene.lights[lnum];
4633                         f = (rtlight->style >= 0 ? r_refdef.scene.lightstylevalue[rtlight->style] : 1) * r_shadow_lightintensityscale.value;
4634                         VectorScale(rtlight->color, f, rtlight->currentcolor);
4635                 }
4636         }
4637
4638         if (r_editlights.integer)
4639                 R_Shadow_DrawLightSprites();
4640 }
4641
4642 void R_Shadow_DrawLights(void)
4643 {
4644         int flag;
4645         int lnum;
4646         size_t lightindex;
4647         dlight_t *light;
4648         size_t range;
4649
4650         R_Shadow_RenderMode_Begin();
4651
4652         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
4653         if (r_shadow_debuglight.integer >= 0)
4654         {
4655                 lightindex = r_shadow_debuglight.integer;
4656                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4657                 if (light)
4658                         R_Shadow_DrawLight(&light->rtlight);
4659         }
4660         else
4661         {
4662                 range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4663                 for (lightindex = 0;lightindex < range;lightindex++)
4664                 {
4665                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4666                         if (light && (light->flags & flag))
4667                                 R_Shadow_DrawLight(&light->rtlight);
4668                 }
4669         }
4670         if (r_refdef.scene.rtdlight)
4671                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
4672                         R_Shadow_DrawLight(r_refdef.scene.lights[lnum]);
4673
4674         R_Shadow_RenderMode_End();
4675 }
4676
4677 void R_Shadow_PrepareModelShadows(void)
4678 {
4679         int i;
4680         float scale, size, radius, dot1, dot2;
4681         prvm_vec3_t prvmshadowdir, prvmshadowfocus;
4682         vec3_t shadowdir, shadowforward, shadowright, shadoworigin, shadowfocus, shadowmins, shadowmaxs;
4683         entity_render_t *ent;
4684
4685         if (!r_refdef.scene.numentities)
4686                 return;
4687
4688         switch (r_shadow_shadowmode)
4689         {
4690         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
4691                 if (r_shadows.integer >= 2)
4692                         break;
4693                 // fall through
4694         case R_SHADOW_SHADOWMODE_STENCIL:
4695                 for (i = 0;i < r_refdef.scene.numentities;i++)
4696                 {
4697                         ent = r_refdef.scene.entities[i];
4698                         if (!ent->animcache_vertex3f && ent->model && ent->model->DrawShadowVolume != NULL && (!ent->model->brush.submodel || r_shadows_castfrombmodels.integer) && (ent->flags & RENDER_SHADOW))
4699                                 R_AnimCache_GetEntity(ent, false, false);
4700                 }
4701                 return;
4702         default:
4703                 return;
4704         }
4705
4706         size = 2*r_shadow_shadowmapmaxsize;
4707         scale = r_shadow_shadowmapping_precision.value * r_shadows_shadowmapscale.value;
4708         radius = 0.5f * size / scale;
4709
4710         Math_atov(r_shadows_throwdirection.string, prvmshadowdir);
4711         VectorCopy(prvmshadowdir, shadowdir);
4712         VectorNormalize(shadowdir);
4713         dot1 = DotProduct(r_refdef.view.forward, shadowdir);
4714         dot2 = DotProduct(r_refdef.view.up, shadowdir);
4715         if (fabs(dot1) <= fabs(dot2))
4716                 VectorMA(r_refdef.view.forward, -dot1, shadowdir, shadowforward);
4717         else
4718                 VectorMA(r_refdef.view.up, -dot2, shadowdir, shadowforward);
4719         VectorNormalize(shadowforward);
4720         CrossProduct(shadowdir, shadowforward, shadowright);
4721         Math_atov(r_shadows_focus.string, prvmshadowfocus);
4722         VectorCopy(prvmshadowfocus, shadowfocus);
4723         VectorM(shadowfocus[0], r_refdef.view.right, shadoworigin);
4724         VectorMA(shadoworigin, shadowfocus[1], r_refdef.view.up, shadoworigin);
4725         VectorMA(shadoworigin, -shadowfocus[2], r_refdef.view.forward, shadoworigin);
4726         VectorAdd(shadoworigin, r_refdef.view.origin, shadoworigin);
4727         if (shadowfocus[0] || shadowfocus[1] || shadowfocus[2])
4728                 dot1 = 1;
4729         VectorMA(shadoworigin, (1.0f - fabs(dot1)) * radius, shadowforward, shadoworigin);
4730
4731         shadowmins[0] = shadoworigin[0] - r_shadows_throwdistance.value * fabs(shadowdir[0]) - radius * (fabs(shadowforward[0]) + fabs(shadowright[0]));
4732         shadowmins[1] = shadoworigin[1] - r_shadows_throwdistance.value * fabs(shadowdir[1]) - radius * (fabs(shadowforward[1]) + fabs(shadowright[1]));
4733         shadowmins[2] = shadoworigin[2] - r_shadows_throwdistance.value * fabs(shadowdir[2]) - radius * (fabs(shadowforward[2]) + fabs(shadowright[2]));
4734         shadowmaxs[0] = shadoworigin[0] + r_shadows_throwdistance.value * fabs(shadowdir[0]) + radius * (fabs(shadowforward[0]) + fabs(shadowright[0]));
4735         shadowmaxs[1] = shadoworigin[1] + r_shadows_throwdistance.value * fabs(shadowdir[1]) + radius * (fabs(shadowforward[1]) + fabs(shadowright[1]));
4736         shadowmaxs[2] = shadoworigin[2] + r_shadows_throwdistance.value * fabs(shadowdir[2]) + radius * (fabs(shadowforward[2]) + fabs(shadowright[2]));
4737
4738         for (i = 0;i < r_refdef.scene.numentities;i++)
4739         {
4740                 ent = r_refdef.scene.entities[i];
4741                 if (!BoxesOverlap(ent->mins, ent->maxs, shadowmins, shadowmaxs))
4742                         continue;
4743                 // cast shadows from anything of the map (submodels are optional)
4744                 if (!ent->animcache_vertex3f && ent->model && ent->model->DrawShadowMap != NULL && (!ent->model->brush.submodel || r_shadows_castfrombmodels.integer) && (ent->flags & RENDER_SHADOW))
4745                         R_AnimCache_GetEntity(ent, false, false);
4746         }
4747 }
4748
4749 void R_DrawModelShadowMaps(int fbo, rtexture_t *depthtexture, rtexture_t *colortexture)
4750 {
4751         int i;
4752         float relativethrowdistance, scale, size, radius, nearclip, farclip, bias, dot1, dot2;
4753         entity_render_t *ent;
4754         vec3_t relativelightorigin;
4755         vec3_t relativelightdirection, relativeforward, relativeright;
4756         vec3_t relativeshadowmins, relativeshadowmaxs;
4757         vec3_t shadowdir, shadowforward, shadowright, shadoworigin, shadowfocus;
4758         prvm_vec3_t prvmshadowdir, prvmshadowfocus;
4759         float m[12];
4760         matrix4x4_t shadowmatrix, cameramatrix, mvpmatrix, invmvpmatrix, scalematrix, texmatrix;
4761         r_viewport_t viewport;
4762         GLuint shadowfbo = 0;
4763         float clearcolor[4];
4764
4765         if (!r_refdef.scene.numentities)
4766                 return;
4767
4768         switch (r_shadow_shadowmode)
4769         {
4770         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
4771                 break;
4772         default:
4773                 return;
4774         }
4775
4776         r_shadow_fb_fbo = fbo;
4777         r_shadow_fb_depthtexture = depthtexture;
4778         r_shadow_fb_colortexture = colortexture;
4779
4780         R_ResetViewRendering3D(fbo, depthtexture, colortexture);
4781         R_Shadow_RenderMode_Begin();
4782         R_Shadow_RenderMode_ActiveLight(NULL);
4783
4784         switch (r_shadow_shadowmode)
4785         {
4786         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
4787                 if (!r_shadow_shadowmap2ddepthtexture)
4788                         R_Shadow_MakeShadowMap(0, r_shadow_shadowmapmaxsize);
4789                 shadowfbo = r_shadow_fbo2d;
4790                 r_shadow_shadowmap_texturescale[0] = 1.0f / R_TextureWidth(r_shadow_shadowmap2ddepthtexture);
4791                 r_shadow_shadowmap_texturescale[1] = 1.0f / R_TextureHeight(r_shadow_shadowmap2ddepthtexture);
4792                 r_shadow_rendermode = R_SHADOW_RENDERMODE_SHADOWMAP2D;
4793                 break;
4794         default:
4795                 break;
4796         }
4797
4798         size = 2*r_shadow_shadowmapmaxsize;
4799         scale = (r_shadow_shadowmapping_precision.value * r_shadows_shadowmapscale.value) / size;
4800         radius = 0.5f / scale;
4801         nearclip = -r_shadows_throwdistance.value;
4802         farclip = r_shadows_throwdistance.value;
4803         bias = r_shadow_shadowmapping_bias.value * r_shadow_shadowmapping_nearclip.value / (2 * r_shadows_throwdistance.value) * (1024.0f / size);
4804
4805         r_shadow_shadowmap_parameters[0] = size;
4806         r_shadow_shadowmap_parameters[1] = size;
4807         r_shadow_shadowmap_parameters[2] = 1.0;
4808         r_shadow_shadowmap_parameters[3] = bound(0.0f, 1.0f - r_shadows_darken.value, 1.0f);
4809
4810         Math_atov(r_shadows_throwdirection.string, prvmshadowdir);
4811         VectorCopy(prvmshadowdir, shadowdir);
4812         VectorNormalize(shadowdir);
4813         Math_atov(r_shadows_focus.string, prvmshadowfocus);
4814         VectorCopy(prvmshadowfocus, shadowfocus);
4815         VectorM(shadowfocus[0], r_refdef.view.right, shadoworigin);
4816         VectorMA(shadoworigin, shadowfocus[1], r_refdef.view.up, shadoworigin);
4817         VectorMA(shadoworigin, -shadowfocus[2], r_refdef.view.forward, shadoworigin);
4818         VectorAdd(shadoworigin, r_refdef.view.origin, shadoworigin);
4819         dot1 = DotProduct(r_refdef.view.forward, shadowdir);
4820         dot2 = DotProduct(r_refdef.view.up, shadowdir);
4821         if (fabs(dot1) <= fabs(dot2))
4822                 VectorMA(r_refdef.view.forward, -dot1, shadowdir, shadowforward);
4823         else
4824                 VectorMA(r_refdef.view.up, -dot2, shadowdir, shadowforward);
4825         VectorNormalize(shadowforward);
4826         VectorM(scale, shadowforward, &m[0]);
4827         if (shadowfocus[0] || shadowfocus[1] || shadowfocus[2])
4828                 dot1 = 1;
4829         m[3] = fabs(dot1) * 0.5f - DotProduct(shadoworigin, &m[0]);
4830         CrossProduct(shadowdir, shadowforward, shadowright);
4831         VectorM(scale, shadowright, &m[4]);
4832         m[7] = 0.5f - DotProduct(shadoworigin, &m[4]);
4833         VectorM(1.0f / (farclip - nearclip), shadowdir, &m[8]);
4834         m[11] = 0.5f - DotProduct(shadoworigin, &m[8]);
4835         Matrix4x4_FromArray12FloatD3D(&shadowmatrix, m);
4836         Matrix4x4_Invert_Full(&cameramatrix, &shadowmatrix);
4837         R_Viewport_InitOrtho(&viewport, &cameramatrix, 0, 0, size, size, 0, 0, 1, 1, 0, -1, NULL);
4838
4839         VectorMA(shadoworigin, (1.0f - fabs(dot1)) * radius, shadowforward, shadoworigin);
4840
4841         if (r_shadow_shadowmap2ddepthbuffer)
4842                 R_Mesh_SetRenderTargets(shadowfbo, r_shadow_shadowmap2ddepthbuffer, r_shadow_shadowmap2ddepthtexture, NULL, NULL, NULL);
4843         else
4844                 R_Mesh_SetRenderTargets(shadowfbo, r_shadow_shadowmap2ddepthtexture, NULL, NULL, NULL, NULL);
4845         R_SetupShader_DepthOrShadow(true, r_shadow_shadowmap2ddepthbuffer != NULL);
4846         GL_PolygonOffset(r_shadow_shadowmapping_polygonfactor.value, r_shadow_shadowmapping_polygonoffset.value);
4847         GL_DepthMask(true);
4848         GL_DepthTest(true);
4849         R_SetViewport(&viewport);
4850         GL_Scissor(viewport.x, viewport.y, min(viewport.width + r_shadow_shadowmapborder, 2*r_shadow_shadowmapmaxsize), viewport.height + r_shadow_shadowmapborder);
4851         Vector4Set(clearcolor, 1,1,1,1);
4852         // in D3D9 we have to render to a color texture shadowmap
4853         // in GL we render directly to a depth texture only
4854         if (r_shadow_shadowmap2ddepthbuffer)
4855                 GL_Clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
4856         else
4857                 GL_Clear(GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
4858         // render into a slightly restricted region so that the borders of the
4859         // shadowmap area fade away, rather than streaking across everything
4860         // outside the usable area
4861         GL_Scissor(viewport.x + r_shadow_shadowmapborder, viewport.y + r_shadow_shadowmapborder, viewport.width - 2*r_shadow_shadowmapborder, viewport.height - 2*r_shadow_shadowmapborder);
4862
4863 #if 0
4864         // debugging
4865         R_Mesh_SetRenderTargets(r_shadow_fb_fbo, r_shadow_fb_depthtexture, r_shadow_fb_colortexture, NULL, NULL, NULL);
4866         R_SetupShader_ShowDepth(true);
4867         GL_ColorMask(1,1,1,1);
4868         GL_Clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
4869 #endif
4870
4871         for (i = 0;i < r_refdef.scene.numentities;i++)
4872         {
4873                 ent = r_refdef.scene.entities[i];
4874
4875                 // cast shadows from anything of the map (submodels are optional)
4876                 if (ent->model && ent->model->DrawShadowMap != NULL && (!ent->model->brush.submodel || r_shadows_castfrombmodels.integer) && (ent->flags & RENDER_SHADOW))
4877                 {
4878                         relativethrowdistance = r_shadows_throwdistance.value * Matrix4x4_ScaleFromMatrix(&ent->inversematrix);
4879                         Matrix4x4_Transform(&ent->inversematrix, shadoworigin, relativelightorigin);
4880                         Matrix4x4_Transform3x3(&ent->inversematrix, shadowdir, relativelightdirection);
4881                         Matrix4x4_Transform3x3(&ent->inversematrix, shadowforward, relativeforward);
4882                         Matrix4x4_Transform3x3(&ent->inversematrix, shadowright, relativeright);
4883                         relativeshadowmins[0] = relativelightorigin[0] - r_shadows_throwdistance.value * fabs(relativelightdirection[0]) - radius * (fabs(relativeforward[0]) + fabs(relativeright[0]));
4884                         relativeshadowmins[1] = relativelightorigin[1] - r_shadows_throwdistance.value * fabs(relativelightdirection[1]) - radius * (fabs(relativeforward[1]) + fabs(relativeright[1]));
4885                         relativeshadowmins[2] = relativelightorigin[2] - r_shadows_throwdistance.value * fabs(relativelightdirection[2]) - radius * (fabs(relativeforward[2]) + fabs(relativeright[2]));
4886                         relativeshadowmaxs[0] = relativelightorigin[0] + r_shadows_throwdistance.value * fabs(relativelightdirection[0]) + radius * (fabs(relativeforward[0]) + fabs(relativeright[0]));
4887                         relativeshadowmaxs[1] = relativelightorigin[1] + r_shadows_throwdistance.value * fabs(relativelightdirection[1]) + radius * (fabs(relativeforward[1]) + fabs(relativeright[1]));
4888                         relativeshadowmaxs[2] = relativelightorigin[2] + r_shadows_throwdistance.value * fabs(relativelightdirection[2]) + radius * (fabs(relativeforward[2]) + fabs(relativeright[2]));
4889                         RSurf_ActiveModelEntity(ent, false, false, false);
4890                         ent->model->DrawShadowMap(0, ent, relativelightorigin, relativelightdirection, relativethrowdistance, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, NULL, relativeshadowmins, relativeshadowmaxs);
4891                         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
4892                 }
4893         }
4894
4895 #if 0
4896         if (r_test.integer)
4897         {
4898                 unsigned char *rawpixels = Z_Malloc(viewport.width*viewport.height*4);
4899                 CHECKGLERROR
4900                 qglReadPixels(viewport.x, viewport.y, viewport.width, viewport.height, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, rawpixels);
4901                 CHECKGLERROR
4902                 Image_WriteTGABGRA("r_shadows_2.tga", viewport.width, viewport.height, rawpixels);
4903                 Cvar_SetValueQuick(&r_test, 0);
4904                 Z_Free(rawpixels);
4905         }
4906 #endif
4907
4908         R_Shadow_RenderMode_End();
4909
4910         Matrix4x4_Concat(&mvpmatrix, &r_refdef.view.viewport.projectmatrix, &r_refdef.view.viewport.viewmatrix);
4911         Matrix4x4_Invert_Full(&invmvpmatrix, &mvpmatrix);
4912         Matrix4x4_CreateScale3(&scalematrix, size, -size, 1);
4913         Matrix4x4_AdjustOrigin(&scalematrix, 0, size, -0.5f * bias);
4914         Matrix4x4_Concat(&texmatrix, &scalematrix, &shadowmatrix);
4915         Matrix4x4_Concat(&r_shadow_shadowmapmatrix, &texmatrix, &invmvpmatrix);
4916
4917         switch (vid.renderpath)
4918         {
4919         case RENDERPATH_GL11:
4920         case RENDERPATH_GL13:
4921         case RENDERPATH_GL20:
4922         case RENDERPATH_SOFT:
4923         case RENDERPATH_GLES1:
4924         case RENDERPATH_GLES2:
4925                 break;
4926         case RENDERPATH_D3D9:
4927         case RENDERPATH_D3D10:
4928         case RENDERPATH_D3D11:
4929 #ifdef OPENGL_ORIENTATION
4930                 r_shadow_shadowmapmatrix.m[0][0]        *= -1.0f;
4931                 r_shadow_shadowmapmatrix.m[0][1]        *= -1.0f;
4932                 r_shadow_shadowmapmatrix.m[0][2]        *= -1.0f;
4933                 r_shadow_shadowmapmatrix.m[0][3]        *= -1.0f;
4934 #else
4935                 r_shadow_shadowmapmatrix.m[0][0]        *= -1.0f;
4936                 r_shadow_shadowmapmatrix.m[1][0]        *= -1.0f;
4937                 r_shadow_shadowmapmatrix.m[2][0]        *= -1.0f;
4938                 r_shadow_shadowmapmatrix.m[3][0]        *= -1.0f;
4939 #endif
4940                 break;
4941         }
4942
4943         r_shadow_usingshadowmaportho = true;
4944         switch (r_shadow_shadowmode)
4945         {
4946         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
4947                 r_shadow_usingshadowmap2d = true;
4948                 break;
4949         default:
4950                 break;
4951         }
4952 }
4953
4954 void R_DrawModelShadows(int fbo, rtexture_t *depthtexture, rtexture_t *colortexture)
4955 {
4956         int i;
4957         float relativethrowdistance;
4958         entity_render_t *ent;
4959         vec3_t relativelightorigin;
4960         vec3_t relativelightdirection;
4961         vec3_t relativeshadowmins, relativeshadowmaxs;
4962         vec3_t tmp, shadowdir;
4963         prvm_vec3_t prvmshadowdir;
4964
4965         if (!r_refdef.scene.numentities || !vid.stencil || (r_shadow_shadowmode != R_SHADOW_SHADOWMODE_STENCIL && r_shadows.integer != 1))
4966                 return;
4967
4968         r_shadow_fb_fbo = fbo;
4969         r_shadow_fb_depthtexture = depthtexture;
4970         r_shadow_fb_colortexture = colortexture;
4971
4972         R_ResetViewRendering3D(fbo, depthtexture, colortexture);
4973         //GL_Scissor(r_refdef.view.viewport.x, r_refdef.view.viewport.y, r_refdef.view.viewport.width, r_refdef.view.viewport.height);
4974         //GL_Scissor(r_refdef.view.x, vid.height - r_refdef.view.height - r_refdef.view.y, r_refdef.view.width, r_refdef.view.height);
4975         R_Shadow_RenderMode_Begin();
4976         R_Shadow_RenderMode_ActiveLight(NULL);
4977         r_shadow_lightscissor[0] = r_refdef.view.x;
4978         r_shadow_lightscissor[1] = vid.height - r_refdef.view.y - r_refdef.view.height;
4979         r_shadow_lightscissor[2] = r_refdef.view.width;
4980         r_shadow_lightscissor[3] = r_refdef.view.height;
4981         R_Shadow_RenderMode_StencilShadowVolumes(false);
4982
4983         // get shadow dir
4984         if (r_shadows.integer == 2)
4985         {
4986                 Math_atov(r_shadows_throwdirection.string, prvmshadowdir);
4987                 VectorCopy(prvmshadowdir, shadowdir);
4988                 VectorNormalize(shadowdir);
4989         }
4990
4991         R_Shadow_ClearStencil();
4992
4993         for (i = 0;i < r_refdef.scene.numentities;i++)
4994         {
4995                 ent = r_refdef.scene.entities[i];
4996
4997                 // cast shadows from anything of the map (submodels are optional)
4998                 if (ent->model && ent->model->DrawShadowVolume != NULL && (!ent->model->brush.submodel || r_shadows_castfrombmodels.integer) && (ent->flags & RENDER_SHADOW))
4999                 {
5000                         relativethrowdistance = r_shadows_throwdistance.value * Matrix4x4_ScaleFromMatrix(&ent->inversematrix);
5001                         VectorSet(relativeshadowmins, -relativethrowdistance, -relativethrowdistance, -relativethrowdistance);
5002                         VectorSet(relativeshadowmaxs, relativethrowdistance, relativethrowdistance, relativethrowdistance);
5003                         if (r_shadows.integer == 2) // 2: simpler mode, throw shadows always in same direction
5004                                 Matrix4x4_Transform3x3(&ent->inversematrix, shadowdir, relativelightdirection);
5005                         else
5006                         {
5007                                 if(ent->entitynumber != 0)
5008                                 {
5009                                         if(ent->entitynumber >= MAX_EDICTS) // csqc entity
5010                                         {
5011                                                 // FIXME handle this
5012                                                 VectorNegate(ent->modellight_lightdir, relativelightdirection);
5013                                         }
5014                                         else
5015                                         {
5016                                                 // networked entity - might be attached in some way (then we should use the parent's light direction, to not tear apart attached entities)
5017                                                 int entnum, entnum2, recursion;
5018                                                 entnum = entnum2 = ent->entitynumber;
5019                                                 for(recursion = 32; recursion > 0; --recursion)
5020                                                 {
5021                                                         entnum2 = cl.entities[entnum].state_current.tagentity;
5022                                                         if(entnum2 >= 1 && entnum2 < cl.num_entities && cl.entities_active[entnum2])
5023                                                                 entnum = entnum2;
5024                                                         else
5025                                                                 break;
5026                                                 }
5027                                                 if(recursion && recursion != 32) // if we followed a valid non-empty attachment chain
5028                                                 {
5029                                                         VectorNegate(cl.entities[entnum].render.modellight_lightdir, relativelightdirection);
5030                                                         // transform into modelspace of OUR entity
5031                                                         Matrix4x4_Transform3x3(&cl.entities[entnum].render.matrix, relativelightdirection, tmp);
5032                                                         Matrix4x4_Transform3x3(&ent->inversematrix, tmp, relativelightdirection);
5033                                                 }
5034                                                 else
5035                                                         VectorNegate(ent->modellight_lightdir, relativelightdirection);
5036                                         }
5037                                 }
5038                                 else
5039                                         VectorNegate(ent->modellight_lightdir, relativelightdirection);
5040                         }
5041
5042                         VectorScale(relativelightdirection, -relativethrowdistance, relativelightorigin);
5043                         RSurf_ActiveModelEntity(ent, false, false, false);
5044                         ent->model->DrawShadowVolume(ent, relativelightorigin, relativelightdirection, relativethrowdistance, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, relativeshadowmins, relativeshadowmaxs);
5045                         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
5046                 }
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         float vertex3f[12];
5088         // if it's too close, skip it
5089         if (VectorLength(rtlight->currentcolor) < (1.0f / 256.0f))
5090                 return;
5091         zdist = (DotProduct(rtlight->shadoworigin, r_refdef.view.forward) - DotProduct(r_refdef.view.origin, r_refdef.view.forward));
5092         if (zdist < 32)
5093                 return;
5094         if (usequery && r_numqueries + 2 <= r_maxqueries)
5095         {
5096                 rtlight->corona_queryindex_allpixels = r_queries[r_numqueries++];
5097                 rtlight->corona_queryindex_visiblepixels = r_queries[r_numqueries++];
5098                 // 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
5099                 VectorMA(r_refdef.view.origin, zdist, r_refdef.view.forward, centerorigin);
5100
5101                 switch(vid.renderpath)
5102                 {
5103                 case RENDERPATH_GL11:
5104                 case RENDERPATH_GL13:
5105                 case RENDERPATH_GL20:
5106                 case RENDERPATH_GLES1:
5107                 case RENDERPATH_GLES2:
5108 #ifdef GL_SAMPLES_PASSED_ARB
5109                         CHECKGLERROR
5110                         // NOTE: GL_DEPTH_TEST must be enabled or ATI won't count samples, so use GL_DepthFunc instead
5111                         qglBeginQueryARB(GL_SAMPLES_PASSED_ARB, rtlight->corona_queryindex_allpixels);
5112                         GL_DepthFunc(GL_ALWAYS);
5113                         R_CalcSprite_Vertex3f(vertex3f, centerorigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale);
5114                         R_Mesh_PrepareVertices_Vertex3f(4, vertex3f, NULL);
5115                         R_Mesh_Draw(0, 4, 0, 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
5116                         qglEndQueryARB(GL_SAMPLES_PASSED_ARB);
5117                         GL_DepthFunc(GL_LEQUAL);
5118                         qglBeginQueryARB(GL_SAMPLES_PASSED_ARB, rtlight->corona_queryindex_visiblepixels);
5119                         R_CalcSprite_Vertex3f(vertex3f, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale);
5120                         R_Mesh_PrepareVertices_Vertex3f(4, vertex3f, NULL);
5121                         R_Mesh_Draw(0, 4, 0, 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
5122                         qglEndQueryARB(GL_SAMPLES_PASSED_ARB);
5123                         CHECKGLERROR
5124 #endif
5125                         break;
5126                 case RENDERPATH_D3D9:
5127                         Con_DPrintf("FIXME D3D9 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5128                         break;
5129                 case RENDERPATH_D3D10:
5130                         Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5131                         break;
5132                 case RENDERPATH_D3D11:
5133                         Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5134                         break;
5135                 case RENDERPATH_SOFT:
5136                         //Con_DPrintf("FIXME SOFT %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5137                         break;
5138                 }
5139         }
5140         rtlight->corona_visibility = bound(0, (zdist - 32) / 32, 1);
5141 }
5142
5143 static float spritetexcoord2f[4*2] = {0, 1, 0, 0, 1, 0, 1, 1};
5144
5145 static void R_DrawCorona(rtlight_t *rtlight, float cscale, float scale)
5146 {
5147         vec3_t color;
5148         GLint allpixels = 0, visiblepixels = 0;
5149         // now we have to check the query result
5150         if (rtlight->corona_queryindex_visiblepixels)
5151         {
5152                 switch(vid.renderpath)
5153                 {
5154                 case RENDERPATH_GL11:
5155                 case RENDERPATH_GL13:
5156                 case RENDERPATH_GL20:
5157                 case RENDERPATH_GLES1:
5158                 case RENDERPATH_GLES2:
5159 #ifdef GL_SAMPLES_PASSED_ARB
5160                         CHECKGLERROR
5161                         qglGetQueryObjectivARB(rtlight->corona_queryindex_visiblepixels, GL_QUERY_RESULT_ARB, &visiblepixels);
5162                         qglGetQueryObjectivARB(rtlight->corona_queryindex_allpixels, GL_QUERY_RESULT_ARB, &allpixels);
5163                         CHECKGLERROR
5164 #endif
5165                         break;
5166                 case RENDERPATH_D3D9:
5167                         Con_DPrintf("FIXME D3D9 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5168                         break;
5169                 case RENDERPATH_D3D10:
5170                         Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5171                         break;
5172                 case RENDERPATH_D3D11:
5173                         Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5174                         break;
5175                 case RENDERPATH_SOFT:
5176                         //Con_DPrintf("FIXME SOFT %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5177                         break;
5178                 }
5179                 //Con_Printf("%i of %i pixels\n", (int)visiblepixels, (int)allpixels);
5180                 if (visiblepixels < 1 || allpixels < 1)
5181                         return;
5182                 rtlight->corona_visibility *= bound(0, (float)visiblepixels / (float)allpixels, 1);
5183                 cscale *= rtlight->corona_visibility;
5184         }
5185         else
5186         {
5187                 // FIXME: these traces should scan all render entities instead of cl.world
5188                 if (CL_TraceLine(r_refdef.view.origin, rtlight->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true).fraction < 1)
5189                         return;
5190         }
5191         VectorScale(rtlight->currentcolor, cscale, color);
5192         if (VectorLength(color) > (1.0f / 256.0f))
5193         {
5194                 float vertex3f[12];
5195                 qboolean negated = (color[0] + color[1] + color[2] < 0) && vid.support.ext_blend_subtract;
5196                 if(negated)
5197                 {
5198                         VectorNegate(color, color);
5199                         GL_BlendEquationSubtract(true);
5200                 }
5201                 R_CalcSprite_Vertex3f(vertex3f, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale);
5202                 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);
5203                 R_DrawCustomSurface(r_shadow_lightcorona, &identitymatrix, MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE, 0, 4, 0, 2, false, false);
5204                 if(negated)
5205                         GL_BlendEquationSubtract(false);
5206         }
5207 }
5208
5209 void R_Shadow_DrawCoronas(void)
5210 {
5211         int i, flag;
5212         qboolean usequery = false;
5213         size_t lightindex;
5214         dlight_t *light;
5215         rtlight_t *rtlight;
5216         size_t range;
5217         if (r_coronas.value < (1.0f / 256.0f) && !gl_flashblend.integer)
5218                 return;
5219         if (r_fb.water.renderingscene)
5220                 return;
5221         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
5222         R_EntityMatrix(&identitymatrix);
5223
5224         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
5225
5226         // check occlusion of coronas
5227         // use GL_ARB_occlusion_query if available
5228         // otherwise use raytraces
5229         r_numqueries = 0;
5230         switch (vid.renderpath)
5231         {
5232         case RENDERPATH_GL11:
5233         case RENDERPATH_GL13:
5234         case RENDERPATH_GL20:
5235         case RENDERPATH_GLES1:
5236         case RENDERPATH_GLES2:
5237                 usequery = vid.support.arb_occlusion_query && r_coronas_occlusionquery.integer;
5238 #ifdef GL_SAMPLES_PASSED_ARB
5239                 if (usequery)
5240                 {
5241                         GL_ColorMask(0,0,0,0);
5242                         if (r_maxqueries < (range + r_refdef.scene.numlights) * 2)
5243                         if (r_maxqueries < MAX_OCCLUSION_QUERIES)
5244                         {
5245                                 i = r_maxqueries;
5246                                 r_maxqueries = (range + r_refdef.scene.numlights) * 4;
5247                                 r_maxqueries = min(r_maxqueries, MAX_OCCLUSION_QUERIES);
5248                                 CHECKGLERROR
5249                                 qglGenQueriesARB(r_maxqueries - i, r_queries + i);
5250                                 CHECKGLERROR
5251                         }
5252                         RSurf_ActiveWorldEntity();
5253                         GL_BlendFunc(GL_ONE, GL_ZERO);
5254                         GL_CullFace(GL_NONE);
5255                         GL_DepthMask(false);
5256                         GL_DepthRange(0, 1);
5257                         GL_PolygonOffset(0, 0);
5258                         GL_DepthTest(true);
5259                         R_Mesh_ResetTextureState();
5260                         R_SetupShader_Generic_NoTexture(false, false);
5261                 }
5262 #endif
5263                 break;
5264         case RENDERPATH_D3D9:
5265                 usequery = false;
5266                 //Con_DPrintf("FIXME D3D9 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5267                 break;
5268         case RENDERPATH_D3D10:
5269                 Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5270                 break;
5271         case RENDERPATH_D3D11:
5272                 Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5273                 break;
5274         case RENDERPATH_SOFT:
5275                 usequery = false;
5276                 //Con_DPrintf("FIXME SOFT %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
5277                 break;
5278         }
5279         for (lightindex = 0;lightindex < range;lightindex++)
5280         {
5281                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5282                 if (!light)
5283                         continue;
5284                 rtlight = &light->rtlight;
5285                 rtlight->corona_visibility = 0;
5286                 rtlight->corona_queryindex_visiblepixels = 0;
5287                 rtlight->corona_queryindex_allpixels = 0;
5288                 if (!(rtlight->flags & flag))
5289                         continue;
5290                 if (rtlight->corona <= 0)
5291                         continue;
5292                 if (r_shadow_debuglight.integer >= 0 && r_shadow_debuglight.integer != (int)lightindex)
5293                         continue;
5294                 R_BeginCoronaQuery(rtlight, rtlight->radius * rtlight->coronasizescale * r_coronas_occlusionsizescale.value, usequery);
5295         }
5296         for (i = 0;i < r_refdef.scene.numlights;i++)
5297         {
5298                 rtlight = r_refdef.scene.lights[i];
5299                 rtlight->corona_visibility = 0;
5300                 rtlight->corona_queryindex_visiblepixels = 0;
5301                 rtlight->corona_queryindex_allpixels = 0;
5302                 if (!(rtlight->flags & flag))
5303                         continue;
5304                 if (rtlight->corona <= 0)
5305                         continue;
5306                 R_BeginCoronaQuery(rtlight, rtlight->radius * rtlight->coronasizescale * r_coronas_occlusionsizescale.value, usequery);
5307         }
5308         if (usequery)
5309                 GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
5310
5311         // now draw the coronas using the query data for intensity info
5312         for (lightindex = 0;lightindex < range;lightindex++)
5313         {
5314                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5315                 if (!light)
5316                         continue;
5317                 rtlight = &light->rtlight;
5318                 if (rtlight->corona_visibility <= 0)
5319                         continue;
5320                 R_DrawCorona(rtlight, rtlight->corona * r_coronas.value * 0.25f, rtlight->radius * rtlight->coronasizescale);
5321         }
5322         for (i = 0;i < r_refdef.scene.numlights;i++)
5323         {
5324                 rtlight = r_refdef.scene.lights[i];
5325                 if (rtlight->corona_visibility <= 0)
5326                         continue;
5327                 if (gl_flashblend.integer)
5328                         R_DrawCorona(rtlight, rtlight->corona, rtlight->radius * rtlight->coronasizescale * 2.0f);
5329                 else
5330                         R_DrawCorona(rtlight, rtlight->corona * r_coronas.value * 0.25f, rtlight->radius * rtlight->coronasizescale);
5331         }
5332 }
5333
5334
5335
5336 static dlight_t *R_Shadow_NewWorldLight(void)
5337 {
5338         return (dlight_t *)Mem_ExpandableArray_AllocRecord(&r_shadow_worldlightsarray);
5339 }
5340
5341 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)
5342 {
5343         matrix4x4_t matrix;
5344         // validate parameters
5345         if (style < 0 || style >= MAX_LIGHTSTYLES)
5346         {
5347                 Con_Printf("R_Shadow_NewWorldLight: invalid light style number %i, must be >= 0 and < %i\n", light->style, MAX_LIGHTSTYLES);
5348                 style = 0;
5349         }
5350         if (!cubemapname)
5351                 cubemapname = "";
5352
5353         // copy to light properties
5354         VectorCopy(origin, light->origin);
5355         light->angles[0] = angles[0] - 360 * floor(angles[0] / 360);
5356         light->angles[1] = angles[1] - 360 * floor(angles[1] / 360);
5357         light->angles[2] = angles[2] - 360 * floor(angles[2] / 360);
5358         /*
5359         light->color[0] = max(color[0], 0);
5360         light->color[1] = max(color[1], 0);
5361         light->color[2] = max(color[2], 0);
5362         */
5363         light->color[0] = color[0];
5364         light->color[1] = color[1];
5365         light->color[2] = color[2];
5366         light->radius = max(radius, 0);
5367         light->style = style;
5368         light->shadow = shadowenable;
5369         light->corona = corona;
5370         strlcpy(light->cubemapname, cubemapname, sizeof(light->cubemapname));
5371         light->coronasizescale = coronasizescale;
5372         light->ambientscale = ambientscale;
5373         light->diffusescale = diffusescale;
5374         light->specularscale = specularscale;
5375         light->flags = flags;
5376
5377         // update renderable light data
5378         Matrix4x4_CreateFromQuakeEntity(&matrix, light->origin[0], light->origin[1], light->origin[2], light->angles[0], light->angles[1], light->angles[2], light->radius);
5379         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);
5380 }
5381
5382 static void R_Shadow_FreeWorldLight(dlight_t *light)
5383 {
5384         if (r_shadow_selectedlight == light)
5385                 r_shadow_selectedlight = NULL;
5386         R_RTLight_Uncompile(&light->rtlight);
5387         Mem_ExpandableArray_FreeRecord(&r_shadow_worldlightsarray, light);
5388 }
5389
5390 void R_Shadow_ClearWorldLights(void)
5391 {
5392         size_t lightindex;
5393         dlight_t *light;
5394         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
5395         for (lightindex = 0;lightindex < range;lightindex++)
5396         {
5397                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5398                 if (light)
5399                         R_Shadow_FreeWorldLight(light);
5400         }
5401         r_shadow_selectedlight = NULL;
5402 }
5403
5404 static void R_Shadow_SelectLight(dlight_t *light)
5405 {
5406         if (r_shadow_selectedlight)
5407                 r_shadow_selectedlight->selected = false;
5408         r_shadow_selectedlight = light;
5409         if (r_shadow_selectedlight)
5410                 r_shadow_selectedlight->selected = true;
5411 }
5412
5413 static void R_Shadow_DrawCursor_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
5414 {
5415         // this is never batched (there can be only one)
5416         float vertex3f[12];
5417         R_CalcSprite_Vertex3f(vertex3f, r_editlights_cursorlocation, r_refdef.view.right, r_refdef.view.up, EDLIGHTSPRSIZE, -EDLIGHTSPRSIZE, -EDLIGHTSPRSIZE, EDLIGHTSPRSIZE);
5418         RSurf_ActiveCustomEntity(&identitymatrix, &identitymatrix, 0, 0, 1, 1, 1, 1, 4, vertex3f, spritetexcoord2f, NULL, NULL, NULL, NULL, 2, polygonelement3i, polygonelement3s, false, false);
5419         R_DrawCustomSurface(r_editlights_sprcursor, &identitymatrix, MATERIALFLAG_NODEPTHTEST | MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE, 0, 4, 0, 2, false, false);
5420 }
5421
5422 static void R_Shadow_DrawLightSprite_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
5423 {
5424         float intensity;
5425         float s;
5426         vec3_t spritecolor;
5427         skinframe_t *skinframe;
5428         float vertex3f[12];
5429
5430         // this is never batched (due to the ent parameter changing every time)
5431         // so numsurfaces == 1 and surfacelist[0] == lightnumber
5432         const dlight_t *light = (dlight_t *)ent;
5433         s = EDLIGHTSPRSIZE;
5434
5435         R_CalcSprite_Vertex3f(vertex3f, light->origin, r_refdef.view.right, r_refdef.view.up, s, -s, -s, s);
5436
5437         intensity = 0.5f;
5438         VectorScale(light->color, intensity, spritecolor);
5439         if (VectorLength(spritecolor) < 0.1732f)
5440                 VectorSet(spritecolor, 0.1f, 0.1f, 0.1f);
5441         if (VectorLength(spritecolor) > 1.0f)
5442                 VectorNormalize(spritecolor);
5443
5444         // draw light sprite
5445         if (light->cubemapname[0] && !light->shadow)
5446                 skinframe = r_editlights_sprcubemapnoshadowlight;
5447         else if (light->cubemapname[0])
5448                 skinframe = r_editlights_sprcubemaplight;
5449         else if (!light->shadow)
5450                 skinframe = r_editlights_sprnoshadowlight;
5451         else
5452                 skinframe = r_editlights_sprlight;
5453
5454         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);
5455         R_DrawCustomSurface(skinframe, &identitymatrix, MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE, 0, 4, 0, 2, false, false);
5456
5457         // draw selection sprite if light is selected
5458         if (light->selected)
5459         {
5460                 RSurf_ActiveCustomEntity(&identitymatrix, &identitymatrix, 0, 0, 1, 1, 1, 1, 4, vertex3f, spritetexcoord2f, NULL, NULL, NULL, NULL, 2, polygonelement3i, polygonelement3s, false, false);
5461                 R_DrawCustomSurface(r_editlights_sprselection, &identitymatrix, MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE, 0, 4, 0, 2, false, false);
5462                 // VorteX todo: add normalmode/realtime mode light overlay sprites?
5463         }
5464 }
5465
5466 void R_Shadow_DrawLightSprites(void)
5467 {
5468         size_t lightindex;
5469         dlight_t *light;
5470         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
5471         for (lightindex = 0;lightindex < range;lightindex++)
5472         {
5473                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5474                 if (light)
5475                         R_MeshQueue_AddTransparent(TRANSPARENTSORT_DISTANCE, light->origin, R_Shadow_DrawLightSprite_TransparentCallback, (entity_render_t *)light, 5, &light->rtlight);
5476         }
5477         if (!r_editlights_lockcursor)
5478                 R_MeshQueue_AddTransparent(TRANSPARENTSORT_DISTANCE, r_editlights_cursorlocation, R_Shadow_DrawCursor_TransparentCallback, NULL, 0, NULL);
5479 }
5480
5481 int R_Shadow_GetRTLightInfo(unsigned int lightindex, float *origin, float *radius, float *color)
5482 {
5483         unsigned int range;
5484         dlight_t *light;
5485         rtlight_t *rtlight;
5486         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray);
5487         if (lightindex >= range)
5488                 return -1;
5489         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5490         if (!light)
5491                 return 0;
5492         rtlight = &light->rtlight;
5493         //if (!(rtlight->flags & flag))
5494         //      return 0;
5495         VectorCopy(rtlight->shadoworigin, origin);
5496         *radius = rtlight->radius;
5497         VectorCopy(rtlight->color, color);
5498         return 1;
5499 }
5500
5501 static void R_Shadow_SelectLightInView(void)
5502 {
5503         float bestrating, rating, temp[3];
5504         dlight_t *best;
5505         size_t lightindex;
5506         dlight_t *light;
5507         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
5508         best = NULL;
5509         bestrating = 0;
5510
5511         if (r_editlights_lockcursor)
5512                 return;
5513         for (lightindex = 0;lightindex < range;lightindex++)
5514         {
5515                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5516                 if (!light)
5517                         continue;
5518                 VectorSubtract(light->origin, r_refdef.view.origin, temp);
5519                 rating = (DotProduct(temp, r_refdef.view.forward) / sqrt(DotProduct(temp, temp)));
5520                 if (rating >= 0.95)
5521                 {
5522                         rating /= (1 + 0.0625f * sqrt(DotProduct(temp, temp)));
5523                         if (bestrating < rating && CL_TraceLine(light->origin, r_refdef.view.origin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true).fraction == 1.0f)
5524                         {
5525                                 bestrating = rating;
5526                                 best = light;
5527                         }
5528                 }
5529         }
5530         R_Shadow_SelectLight(best);
5531 }
5532
5533 void R_Shadow_LoadWorldLights(void)
5534 {
5535         int n, a, style, shadow, flags;
5536         char tempchar, *lightsstring, *s, *t, name[MAX_QPATH], cubemapname[MAX_QPATH];
5537         float origin[3], radius, color[3], angles[3], corona, coronasizescale, ambientscale, diffusescale, specularscale;
5538         if (cl.worldmodel == NULL)
5539         {
5540                 Con_Print("No map loaded.\n");
5541                 return;
5542         }
5543         dpsnprintf(name, sizeof(name), "%s.rtlights", cl.worldnamenoextension);
5544         lightsstring = (char *)FS_LoadFile(name, tempmempool, false, NULL);
5545         if (lightsstring)
5546         {
5547                 s = lightsstring;
5548                 n = 0;
5549                 while (*s)
5550                 {
5551                         /*
5552                         t = s;
5553                         shadow = true;
5554                         for (;COM_Parse(t, true) && strcmp(
5555                         if (COM_Parse(t, true))
5556                         {
5557                                 if (com_token[0] == '!')
5558                                 {
5559                                         shadow = false;
5560                                         origin[0] = atof(com_token+1);
5561                                 }
5562                                 else
5563                                         origin[0] = atof(com_token);
5564                                 if (Com_Parse(t
5565                         }
5566                         */
5567                         t = s;
5568                         while (*s && *s != '\n' && *s != '\r')
5569                                 s++;
5570                         if (!*s)
5571                                 break;
5572                         tempchar = *s;
5573                         shadow = true;
5574                         // check for modifier flags
5575                         if (*t == '!')
5576                         {
5577                                 shadow = false;
5578                                 t++;
5579                         }
5580                         *s = 0;
5581 #if _MSC_VER >= 1400
5582 #define sscanf sscanf_s
5583 #endif
5584                         cubemapname[sizeof(cubemapname)-1] = 0;
5585 #if MAX_QPATH != 128
5586 #error update this code if MAX_QPATH changes
5587 #endif
5588                         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
5589 #if _MSC_VER >= 1400
5590 , sizeof(cubemapname)
5591 #endif
5592 , &corona, &angles[0], &angles[1], &angles[2], &coronasizescale, &ambientscale, &diffusescale, &specularscale, &flags);
5593                         *s = tempchar;
5594                         if (a < 18)
5595                                 flags = LIGHTFLAG_REALTIMEMODE;
5596                         if (a < 17)
5597                                 specularscale = 1;
5598                         if (a < 16)
5599                                 diffusescale = 1;
5600                         if (a < 15)
5601                                 ambientscale = 0;
5602                         if (a < 14)
5603                                 coronasizescale = 0.25f;
5604                         if (a < 13)
5605                                 VectorClear(angles);
5606                         if (a < 10)
5607                                 corona = 0;
5608                         if (a < 9 || !strcmp(cubemapname, "\"\""))
5609                                 cubemapname[0] = 0;
5610                         // remove quotes on cubemapname
5611                         if (cubemapname[0] == '"' && cubemapname[strlen(cubemapname) - 1] == '"')
5612                         {
5613                                 size_t namelen;
5614                                 namelen = strlen(cubemapname) - 2;
5615                                 memmove(cubemapname, cubemapname + 1, namelen);
5616                                 cubemapname[namelen] = '\0';
5617                         }
5618                         if (a < 8)
5619                         {
5620                                 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);
5621                                 break;
5622                         }
5623                         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, angles, color, radius, corona, style, shadow, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
5624                         if (*s == '\r')
5625                                 s++;
5626                         if (*s == '\n')
5627                                 s++;
5628                         n++;
5629                 }
5630                 if (*s)
5631                         Con_Printf("invalid rtlights file \"%s\"\n", name);
5632                 Mem_Free(lightsstring);
5633         }
5634 }
5635
5636 void R_Shadow_SaveWorldLights(void)
5637 {
5638         size_t lightindex;
5639         dlight_t *light;
5640         size_t bufchars, bufmaxchars;
5641         char *buf, *oldbuf;
5642         char name[MAX_QPATH];
5643         char line[MAX_INPUTLINE];
5644         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked, assuming the dpsnprintf mess doesn't screw it up...
5645         // I hate lines which are 3 times my screen size :( --blub
5646         if (!range)
5647                 return;
5648         if (cl.worldmodel == NULL)
5649         {
5650                 Con_Print("No map loaded.\n");
5651                 return;
5652         }
5653         dpsnprintf(name, sizeof(name), "%s.rtlights", cl.worldnamenoextension);
5654         bufchars = bufmaxchars = 0;
5655         buf = NULL;
5656         for (lightindex = 0;lightindex < range;lightindex++)
5657         {
5658                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5659                 if (!light)
5660                         continue;
5661                 if (light->coronasizescale != 0.25f || light->ambientscale != 0 || light->diffusescale != 1 || light->specularscale != 1 || light->flags != LIGHTFLAG_REALTIMEMODE)
5662                         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);
5663                 else if (light->cubemapname[0] || light->corona || light->angles[0] || light->angles[1] || light->angles[2])
5664                         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]);
5665                 else
5666                         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);
5667                 if (bufchars + strlen(line) > bufmaxchars)
5668                 {
5669                         bufmaxchars = bufchars + strlen(line) + 2048;
5670                         oldbuf = buf;
5671                         buf = (char *)Mem_Alloc(tempmempool, bufmaxchars);
5672                         if (oldbuf)
5673                         {
5674                                 if (bufchars)
5675                                         memcpy(buf, oldbuf, bufchars);
5676                                 Mem_Free(oldbuf);
5677                         }
5678                 }
5679                 if (strlen(line))
5680                 {
5681                         memcpy(buf + bufchars, line, strlen(line));
5682                         bufchars += strlen(line);
5683                 }
5684         }
5685         if (bufchars)
5686                 FS_WriteFile(name, buf, (fs_offset_t)bufchars);
5687         if (buf)
5688                 Mem_Free(buf);
5689 }
5690
5691 void R_Shadow_LoadLightsFile(void)
5692 {
5693         int n, a, style;
5694         char tempchar, *lightsstring, *s, *t, name[MAX_QPATH];
5695         float origin[3], radius, color[3], subtract, spotdir[3], spotcone, falloff, distbias;
5696         if (cl.worldmodel == NULL)
5697         {
5698                 Con_Print("No map loaded.\n");
5699                 return;
5700         }
5701         dpsnprintf(name, sizeof(name), "%s.lights", cl.worldnamenoextension);
5702         lightsstring = (char *)FS_LoadFile(name, tempmempool, false, NULL);
5703         if (lightsstring)
5704         {
5705                 s = lightsstring;
5706                 n = 0;
5707                 while (*s)
5708                 {
5709                         t = s;
5710                         while (*s && *s != '\n' && *s != '\r')
5711                                 s++;
5712                         if (!*s)
5713                                 break;
5714                         tempchar = *s;
5715                         *s = 0;
5716                         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);
5717                         *s = tempchar;
5718                         if (a < 14)
5719                         {
5720                                 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);
5721                                 break;
5722                         }
5723                         radius = sqrt(DotProduct(color, color) / (falloff * falloff * 8192.0f * 8192.0f));
5724                         radius = bound(15, radius, 4096);
5725                         VectorScale(color, (2.0f / (8388608.0f)), color);
5726                         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, vec3_origin, color, radius, 0, style, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
5727                         if (*s == '\r')
5728                                 s++;
5729                         if (*s == '\n')
5730                                 s++;
5731                         n++;
5732                 }
5733                 if (*s)
5734                         Con_Printf("invalid lights file \"%s\"\n", name);
5735                 Mem_Free(lightsstring);
5736         }
5737 }
5738
5739 // tyrlite/hmap2 light types in the delay field
5740 typedef enum lighttype_e {LIGHTTYPE_MINUSX, LIGHTTYPE_RECIPX, LIGHTTYPE_RECIPXX, LIGHTTYPE_NONE, LIGHTTYPE_SUN, LIGHTTYPE_MINUSXX} lighttype_t;
5741
5742 void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void)
5743 {
5744         int entnum;
5745         int style;
5746         int islight;
5747         int skin;
5748         int pflags;
5749         //int effects;
5750         int type;
5751         int n;
5752         char *entfiledata;
5753         const char *data;
5754         float origin[3], angles[3], radius, color[3], light[4], fadescale, lightscale, originhack[3], overridecolor[3], vec[4];
5755         char key[256], value[MAX_INPUTLINE];
5756         char vabuf[1024];
5757
5758         if (cl.worldmodel == NULL)
5759         {
5760                 Con_Print("No map loaded.\n");
5761                 return;
5762         }
5763         // try to load a .ent file first
5764         dpsnprintf(key, sizeof(key), "%s.ent", cl.worldnamenoextension);
5765         data = entfiledata = (char *)FS_LoadFile(key, tempmempool, true, NULL);
5766         // and if that is not found, fall back to the bsp file entity string
5767         if (!data)
5768                 data = cl.worldmodel->brush.entities;
5769         if (!data)
5770                 return;
5771         for (entnum = 0;COM_ParseToken_Simple(&data, false, false, true) && com_token[0] == '{';entnum++)
5772         {
5773                 type = LIGHTTYPE_MINUSX;
5774                 origin[0] = origin[1] = origin[2] = 0;
5775                 originhack[0] = originhack[1] = originhack[2] = 0;
5776                 angles[0] = angles[1] = angles[2] = 0;
5777                 color[0] = color[1] = color[2] = 1;
5778                 light[0] = light[1] = light[2] = 1;light[3] = 300;
5779                 overridecolor[0] = overridecolor[1] = overridecolor[2] = 1;
5780                 fadescale = 1;
5781                 lightscale = 1;
5782                 style = 0;
5783                 skin = 0;
5784                 pflags = 0;
5785                 //effects = 0;
5786                 islight = false;
5787                 while (1)
5788                 {
5789                         if (!COM_ParseToken_Simple(&data, false, false, true))
5790                                 break; // error
5791                         if (com_token[0] == '}')
5792                                 break; // end of entity
5793                         if (com_token[0] == '_')
5794                                 strlcpy(key, com_token + 1, sizeof(key));
5795                         else
5796                                 strlcpy(key, com_token, sizeof(key));
5797                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
5798                                 key[strlen(key)-1] = 0;
5799                         if (!COM_ParseToken_Simple(&data, false, false, true))
5800                                 break; // error
5801                         strlcpy(value, com_token, sizeof(value));
5802
5803                         // now that we have the key pair worked out...
5804                         if (!strcmp("light", key))
5805                         {
5806                                 n = sscanf(value, "%f %f %f %f", &vec[0], &vec[1], &vec[2], &vec[3]);
5807                                 if (n == 1)
5808                                 {
5809                                         // quake
5810                                         light[0] = vec[0] * (1.0f / 256.0f);
5811                                         light[1] = vec[0] * (1.0f / 256.0f);
5812                                         light[2] = vec[0] * (1.0f / 256.0f);
5813                                         light[3] = vec[0];
5814                                 }
5815                                 else if (n == 4)
5816                                 {
5817                                         // halflife
5818                                         light[0] = vec[0] * (1.0f / 255.0f);
5819                                         light[1] = vec[1] * (1.0f / 255.0f);
5820                                         light[2] = vec[2] * (1.0f / 255.0f);
5821                                         light[3] = vec[3];
5822                                 }
5823                         }
5824                         else if (!strcmp("delay", key))
5825                                 type = atoi(value);
5826                         else if (!strcmp("origin", key))
5827                                 sscanf(value, "%f %f %f", &origin[0], &origin[1], &origin[2]);
5828                         else if (!strcmp("angle", key))
5829                                 angles[0] = 0, angles[1] = atof(value), angles[2] = 0;
5830                         else if (!strcmp("angles", key))
5831                                 sscanf(value, "%f %f %f", &angles[0], &angles[1], &angles[2]);
5832                         else if (!strcmp("color", key))
5833                                 sscanf(value, "%f %f %f", &color[0], &color[1], &color[2]);
5834                         else if (!strcmp("wait", key))
5835                                 fadescale = atof(value);
5836                         else if (!strcmp("classname", key))
5837                         {
5838                                 if (!strncmp(value, "light", 5))
5839                                 {
5840                                         islight = true;
5841                                         if (!strcmp(value, "light_fluoro"))
5842                                         {
5843                                                 originhack[0] = 0;
5844                                                 originhack[1] = 0;
5845                                                 originhack[2] = 0;
5846                                                 overridecolor[0] = 1;
5847                                                 overridecolor[1] = 1;
5848                                                 overridecolor[2] = 1;
5849                                         }
5850                                         if (!strcmp(value, "light_fluorospark"))
5851                                         {
5852                                                 originhack[0] = 0;
5853                                                 originhack[1] = 0;
5854                                                 originhack[2] = 0;
5855                                                 overridecolor[0] = 1;
5856                                                 overridecolor[1] = 1;
5857                                                 overridecolor[2] = 1;
5858                                         }
5859                                         if (!strcmp(value, "light_globe"))
5860                                         {
5861                                                 originhack[0] = 0;
5862                                                 originhack[1] = 0;
5863                                                 originhack[2] = 0;
5864                                                 overridecolor[0] = 1;
5865                                                 overridecolor[1] = 0.8;
5866                                                 overridecolor[2] = 0.4;
5867                                         }
5868                                         if (!strcmp(value, "light_flame_large_yellow"))
5869                                         {
5870                                                 originhack[0] = 0;
5871                                                 originhack[1] = 0;
5872                                                 originhack[2] = 0;
5873                                                 overridecolor[0] = 1;
5874                                                 overridecolor[1] = 0.5;
5875                                                 overridecolor[2] = 0.1;
5876                                         }
5877                                         if (!strcmp(value, "light_flame_small_yellow"))
5878                                         {
5879                                                 originhack[0] = 0;
5880                                                 originhack[1] = 0;
5881                                                 originhack[2] = 0;
5882                                                 overridecolor[0] = 1;
5883                                                 overridecolor[1] = 0.5;
5884                                                 overridecolor[2] = 0.1;
5885                                         }
5886                                         if (!strcmp(value, "light_torch_small_white"))
5887                                         {
5888                                                 originhack[0] = 0;
5889                                                 originhack[1] = 0;
5890                                                 originhack[2] = 0;
5891                                                 overridecolor[0] = 1;
5892                                                 overridecolor[1] = 0.5;
5893                                                 overridecolor[2] = 0.1;
5894                                         }
5895                                         if (!strcmp(value, "light_torch_small_walltorch"))
5896                                         {
5897                                                 originhack[0] = 0;
5898                                                 originhack[1] = 0;
5899                                                 originhack[2] = 0;
5900                                                 overridecolor[0] = 1;
5901                                                 overridecolor[1] = 0.5;
5902                                                 overridecolor[2] = 0.1;
5903                                         }
5904                                 }
5905                         }
5906                         else if (!strcmp("style", key))
5907                                 style = atoi(value);
5908                         else if (!strcmp("skin", key))
5909                                 skin = (int)atof(value);
5910                         else if (!strcmp("pflags", key))
5911                                 pflags = (int)atof(value);
5912                         //else if (!strcmp("effects", key))
5913                         //      effects = (int)atof(value);
5914                         else if (cl.worldmodel->type == mod_brushq3)
5915                         {
5916                                 if (!strcmp("scale", key))
5917                                         lightscale = atof(value);
5918                                 if (!strcmp("fade", key))
5919                                         fadescale = atof(value);
5920                         }
5921                 }
5922                 if (!islight)
5923                         continue;
5924                 if (lightscale <= 0)
5925                         lightscale = 1;
5926                 if (fadescale <= 0)
5927                         fadescale = 1;
5928                 if (color[0] == color[1] && color[0] == color[2])
5929                 {
5930                         color[0] *= overridecolor[0];
5931                         color[1] *= overridecolor[1];
5932                         color[2] *= overridecolor[2];
5933                 }
5934                 radius = light[3] * r_editlights_quakelightsizescale.value * lightscale / fadescale;
5935                 color[0] = color[0] * light[0];
5936                 color[1] = color[1] * light[1];
5937                 color[2] = color[2] * light[2];
5938                 switch (type)
5939                 {
5940                 case LIGHTTYPE_MINUSX:
5941                         break;
5942                 case LIGHTTYPE_RECIPX:
5943                         radius *= 2;
5944                         VectorScale(color, (1.0f / 16.0f), color);
5945                         break;
5946                 case LIGHTTYPE_RECIPXX:
5947                         radius *= 2;
5948                         VectorScale(color, (1.0f / 16.0f), color);
5949                         break;
5950                 default:
5951                 case LIGHTTYPE_NONE:
5952                         break;
5953                 case LIGHTTYPE_SUN:
5954                         break;
5955                 case LIGHTTYPE_MINUSXX:
5956                         break;
5957                 }
5958                 VectorAdd(origin, originhack, origin);
5959                 if (radius >= 1)
5960                         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);
5961         }
5962         if (entfiledata)
5963                 Mem_Free(entfiledata);
5964 }
5965
5966
5967 static void R_Shadow_SetCursorLocationForView(void)
5968 {
5969         vec_t dist, push;
5970         vec3_t dest, endpos;
5971         trace_t trace;
5972         VectorMA(r_refdef.view.origin, r_editlights_cursordistance.value, r_refdef.view.forward, dest);
5973         trace = CL_TraceLine(r_refdef.view.origin, dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true);
5974         if (trace.fraction < 1)
5975         {
5976                 dist = trace.fraction * r_editlights_cursordistance.value;
5977                 push = r_editlights_cursorpushback.value;
5978                 if (push > dist)
5979                         push = dist;
5980                 push = -push;
5981                 VectorMA(trace.endpos, push, r_refdef.view.forward, endpos);
5982                 VectorMA(endpos, r_editlights_cursorpushoff.value, trace.plane.normal, endpos);
5983         }
5984         else
5985         {
5986                 VectorClear( endpos );
5987         }
5988         r_editlights_cursorlocation[0] = floor(endpos[0] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
5989         r_editlights_cursorlocation[1] = floor(endpos[1] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
5990         r_editlights_cursorlocation[2] = floor(endpos[2] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
5991 }
5992
5993 void R_Shadow_UpdateWorldLightSelection(void)
5994 {
5995         if (r_editlights.integer)
5996         {
5997                 R_Shadow_SetCursorLocationForView();
5998                 R_Shadow_SelectLightInView();
5999         }
6000         else
6001                 R_Shadow_SelectLight(NULL);
6002 }
6003
6004 static void R_Shadow_EditLights_Clear_f(void)
6005 {
6006         R_Shadow_ClearWorldLights();
6007 }
6008
6009 void R_Shadow_EditLights_Reload_f(void)
6010 {
6011         if (!cl.worldmodel)
6012                 return;
6013         strlcpy(r_shadow_mapname, cl.worldname, sizeof(r_shadow_mapname));
6014         R_Shadow_ClearWorldLights();
6015         R_Shadow_LoadWorldLights();
6016         if (!Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray))
6017         {
6018                 R_Shadow_LoadLightsFile();
6019                 if (!Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray))
6020                         R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite();
6021         }
6022 }
6023
6024 static void R_Shadow_EditLights_Save_f(void)
6025 {
6026         if (!cl.worldmodel)
6027                 return;
6028         R_Shadow_SaveWorldLights();
6029 }
6030
6031 static void R_Shadow_EditLights_ImportLightEntitiesFromMap_f(void)
6032 {
6033         R_Shadow_ClearWorldLights();
6034         R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite();
6035 }
6036
6037 static void R_Shadow_EditLights_ImportLightsFile_f(void)
6038 {
6039         R_Shadow_ClearWorldLights();
6040         R_Shadow_LoadLightsFile();
6041 }
6042
6043 static void R_Shadow_EditLights_Spawn_f(void)
6044 {
6045         vec3_t color;
6046         if (!r_editlights.integer)
6047         {
6048                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
6049                 return;
6050         }
6051         if (Cmd_Argc() != 1)
6052         {
6053                 Con_Print("r_editlights_spawn does not take parameters\n");
6054                 return;
6055         }
6056         color[0] = color[1] = color[2] = 1;
6057         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), r_editlights_cursorlocation, vec3_origin, color, 200, 0, 0, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
6058 }
6059
6060 static void R_Shadow_EditLights_Edit_f(void)
6061 {
6062         vec3_t origin, angles, color;
6063         vec_t radius, corona, coronasizescale, ambientscale, diffusescale, specularscale;
6064         int style, shadows, flags, normalmode, realtimemode;
6065         char cubemapname[MAX_INPUTLINE];
6066         if (!r_editlights.integer)
6067         {
6068                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
6069                 return;
6070         }
6071         if (!r_shadow_selectedlight)
6072         {
6073                 Con_Print("No selected light.\n");
6074                 return;
6075         }
6076         VectorCopy(r_shadow_selectedlight->origin, origin);
6077         VectorCopy(r_shadow_selectedlight->angles, angles);
6078         VectorCopy(r_shadow_selectedlight->color, color);
6079         radius = r_shadow_selectedlight->radius;
6080         style = r_shadow_selectedlight->style;
6081         if (r_shadow_selectedlight->cubemapname)
6082                 strlcpy(cubemapname, r_shadow_selectedlight->cubemapname, sizeof(cubemapname));
6083         else
6084                 cubemapname[0] = 0;
6085         shadows = r_shadow_selectedlight->shadow;
6086         corona = r_shadow_selectedlight->corona;
6087         coronasizescale = r_shadow_selectedlight->coronasizescale;
6088         ambientscale = r_shadow_selectedlight->ambientscale;
6089         diffusescale = r_shadow_selectedlight->diffusescale;
6090         specularscale = r_shadow_selectedlight->specularscale;
6091         flags = r_shadow_selectedlight->flags;
6092         normalmode = (flags & LIGHTFLAG_NORMALMODE) != 0;
6093         realtimemode = (flags & LIGHTFLAG_REALTIMEMODE) != 0;
6094         if (!strcmp(Cmd_Argv(1), "origin"))
6095         {
6096                 if (Cmd_Argc() != 5)
6097                 {
6098                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
6099                         return;
6100                 }
6101                 origin[0] = atof(Cmd_Argv(2));
6102                 origin[1] = atof(Cmd_Argv(3));
6103                 origin[2] = atof(Cmd_Argv(4));
6104         }
6105         else if (!strcmp(Cmd_Argv(1), "originscale"))
6106         {
6107                 if (Cmd_Argc() != 5)
6108                 {
6109                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
6110                         return;
6111                 }
6112                 origin[0] *= atof(Cmd_Argv(2));
6113                 origin[1] *= atof(Cmd_Argv(3));
6114                 origin[2] *= atof(Cmd_Argv(4));
6115         }
6116         else if (!strcmp(Cmd_Argv(1), "originx"))
6117         {
6118                 if (Cmd_Argc() != 3)
6119                 {
6120                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6121                         return;
6122                 }
6123                 origin[0] = atof(Cmd_Argv(2));
6124         }
6125         else if (!strcmp(Cmd_Argv(1), "originy"))
6126         {
6127                 if (Cmd_Argc() != 3)
6128                 {
6129                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6130                         return;
6131                 }
6132                 origin[1] = atof(Cmd_Argv(2));
6133         }
6134         else if (!strcmp(Cmd_Argv(1), "originz"))
6135         {
6136                 if (Cmd_Argc() != 3)
6137                 {
6138                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6139                         return;
6140                 }
6141                 origin[2] = atof(Cmd_Argv(2));
6142         }
6143         else if (!strcmp(Cmd_Argv(1), "move"))
6144         {
6145                 if (Cmd_Argc() != 5)
6146                 {
6147                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
6148                         return;
6149                 }
6150                 origin[0] += atof(Cmd_Argv(2));
6151                 origin[1] += atof(Cmd_Argv(3));
6152                 origin[2] += atof(Cmd_Argv(4));
6153         }
6154         else if (!strcmp(Cmd_Argv(1), "movex"))
6155         {
6156                 if (Cmd_Argc() != 3)
6157                 {
6158                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6159                         return;
6160                 }
6161                 origin[0] += atof(Cmd_Argv(2));
6162         }
6163         else if (!strcmp(Cmd_Argv(1), "movey"))
6164         {
6165                 if (Cmd_Argc() != 3)
6166                 {
6167                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6168                         return;
6169                 }
6170                 origin[1] += atof(Cmd_Argv(2));
6171         }
6172         else if (!strcmp(Cmd_Argv(1), "movez"))
6173         {
6174                 if (Cmd_Argc() != 3)
6175                 {
6176                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6177                         return;
6178                 }
6179                 origin[2] += atof(Cmd_Argv(2));
6180         }
6181         else if (!strcmp(Cmd_Argv(1), "angles"))
6182         {
6183                 if (Cmd_Argc() != 5)
6184                 {
6185                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
6186                         return;
6187                 }
6188                 angles[0] = atof(Cmd_Argv(2));
6189                 angles[1] = atof(Cmd_Argv(3));
6190                 angles[2] = atof(Cmd_Argv(4));
6191         }
6192         else if (!strcmp(Cmd_Argv(1), "anglesx"))
6193         {
6194                 if (Cmd_Argc() != 3)
6195                 {
6196                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6197                         return;
6198                 }
6199                 angles[0] = atof(Cmd_Argv(2));
6200         }
6201         else if (!strcmp(Cmd_Argv(1), "anglesy"))
6202         {
6203                 if (Cmd_Argc() != 3)
6204                 {
6205                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6206                         return;
6207                 }
6208                 angles[1] = atof(Cmd_Argv(2));
6209         }
6210         else if (!strcmp(Cmd_Argv(1), "anglesz"))
6211         {
6212                 if (Cmd_Argc() != 3)
6213                 {
6214                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6215                         return;
6216                 }
6217                 angles[2] = atof(Cmd_Argv(2));
6218         }
6219         else if (!strcmp(Cmd_Argv(1), "color"))
6220         {
6221                 if (Cmd_Argc() != 5)
6222                 {
6223                         Con_Printf("usage: r_editlights_edit %s red green blue\n", Cmd_Argv(1));
6224                         return;
6225                 }
6226                 color[0] = atof(Cmd_Argv(2));
6227                 color[1] = atof(Cmd_Argv(3));
6228                 color[2] = atof(Cmd_Argv(4));
6229         }
6230         else if (!strcmp(Cmd_Argv(1), "radius"))
6231         {
6232                 if (Cmd_Argc() != 3)
6233                 {
6234                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6235                         return;
6236                 }
6237                 radius = atof(Cmd_Argv(2));
6238         }
6239         else if (!strcmp(Cmd_Argv(1), "colorscale"))
6240         {
6241                 if (Cmd_Argc() == 3)
6242                 {
6243                         double scale = atof(Cmd_Argv(2));
6244                         color[0] *= scale;
6245                         color[1] *= scale;
6246                         color[2] *= scale;
6247                 }
6248                 else
6249                 {
6250                         if (Cmd_Argc() != 5)
6251                         {
6252                                 Con_Printf("usage: r_editlights_edit %s red green blue  (OR grey instead of red green blue)\n", Cmd_Argv(1));
6253                                 return;
6254                         }
6255                         color[0] *= atof(Cmd_Argv(2));
6256                         color[1] *= atof(Cmd_Argv(3));
6257                         color[2] *= atof(Cmd_Argv(4));
6258                 }
6259         }
6260         else if (!strcmp(Cmd_Argv(1), "radiusscale") || !strcmp(Cmd_Argv(1), "sizescale"))
6261         {
6262                 if (Cmd_Argc() != 3)
6263                 {
6264                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6265                         return;
6266                 }
6267                 radius *= atof(Cmd_Argv(2));
6268         }
6269         else if (!strcmp(Cmd_Argv(1), "style"))
6270         {
6271                 if (Cmd_Argc() != 3)
6272                 {
6273                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6274                         return;
6275                 }
6276                 style = atoi(Cmd_Argv(2));
6277         }
6278         else if (!strcmp(Cmd_Argv(1), "cubemap"))
6279         {
6280                 if (Cmd_Argc() > 3)
6281                 {
6282                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6283                         return;
6284                 }
6285                 if (Cmd_Argc() == 3)
6286                         strlcpy(cubemapname, Cmd_Argv(2), sizeof(cubemapname));
6287                 else
6288                         cubemapname[0] = 0;
6289         }
6290         else if (!strcmp(Cmd_Argv(1), "shadows"))
6291         {
6292                 if (Cmd_Argc() != 3)
6293                 {
6294                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6295                         return;
6296                 }
6297                 shadows = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
6298         }
6299         else if (!strcmp(Cmd_Argv(1), "corona"))
6300         {
6301                 if (Cmd_Argc() != 3)
6302                 {
6303                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6304                         return;
6305                 }
6306                 corona = atof(Cmd_Argv(2));
6307         }
6308         else if (!strcmp(Cmd_Argv(1), "coronasize"))
6309         {
6310                 if (Cmd_Argc() != 3)
6311                 {
6312                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6313                         return;
6314                 }
6315                 coronasizescale = atof(Cmd_Argv(2));
6316         }
6317         else if (!strcmp(Cmd_Argv(1), "ambient"))
6318         {
6319                 if (Cmd_Argc() != 3)
6320                 {
6321                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6322                         return;
6323                 }
6324                 ambientscale = atof(Cmd_Argv(2));
6325         }
6326         else if (!strcmp(Cmd_Argv(1), "diffuse"))
6327         {
6328                 if (Cmd_Argc() != 3)
6329                 {
6330                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6331                         return;
6332                 }
6333                 diffusescale = atof(Cmd_Argv(2));
6334         }
6335         else if (!strcmp(Cmd_Argv(1), "specular"))
6336         {
6337                 if (Cmd_Argc() != 3)
6338                 {
6339                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6340                         return;
6341                 }
6342                 specularscale = atof(Cmd_Argv(2));
6343         }
6344         else if (!strcmp(Cmd_Argv(1), "normalmode"))
6345         {
6346                 if (Cmd_Argc() != 3)
6347                 {
6348                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6349                         return;
6350                 }
6351                 normalmode = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
6352         }
6353         else if (!strcmp(Cmd_Argv(1), "realtimemode"))
6354         {
6355                 if (Cmd_Argc() != 3)
6356                 {
6357                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
6358                         return;
6359                 }
6360                 realtimemode = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
6361         }
6362         else
6363         {
6364                 Con_Print("usage: r_editlights_edit [property] [value]\n");
6365                 Con_Print("Selected light's properties:\n");
6366                 Con_Printf("Origin       : %f %f %f\n", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);
6367                 Con_Printf("Angles       : %f %f %f\n", r_shadow_selectedlight->angles[0], r_shadow_selectedlight->angles[1], r_shadow_selectedlight->angles[2]);
6368                 Con_Printf("Color        : %f %f %f\n", r_shadow_selectedlight->color[0], r_shadow_selectedlight->color[1], r_shadow_selectedlight->color[2]);
6369                 Con_Printf("Radius       : %f\n", r_shadow_selectedlight->radius);
6370                 Con_Printf("Corona       : %f\n", r_shadow_selectedlight->corona);
6371                 Con_Printf("Style        : %i\n", r_shadow_selectedlight->style);
6372                 Con_Printf("Shadows      : %s\n", r_shadow_selectedlight->shadow ? "yes" : "no");
6373                 Con_Printf("Cubemap      : %s\n", r_shadow_selectedlight->cubemapname);
6374                 Con_Printf("CoronaSize   : %f\n", r_shadow_selectedlight->coronasizescale);
6375                 Con_Printf("Ambient      : %f\n", r_shadow_selectedlight->ambientscale);
6376                 Con_Printf("Diffuse      : %f\n", r_shadow_selectedlight->diffusescale);
6377                 Con_Printf("Specular     : %f\n", r_shadow_selectedlight->specularscale);
6378                 Con_Printf("NormalMode   : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_NORMALMODE) ? "yes" : "no");
6379                 Con_Printf("RealTimeMode : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_REALTIMEMODE) ? "yes" : "no");
6380                 return;
6381         }
6382         flags = (normalmode ? LIGHTFLAG_NORMALMODE : 0) | (realtimemode ? LIGHTFLAG_REALTIMEMODE : 0);
6383         R_Shadow_UpdateWorldLight(r_shadow_selectedlight, origin, angles, color, radius, corona, style, shadows, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
6384 }
6385
6386 static void R_Shadow_EditLights_EditAll_f(void)
6387 {
6388         size_t lightindex;
6389         dlight_t *light, *oldselected;
6390         size_t range;
6391
6392         if (!r_editlights.integer)
6393         {
6394                 Con_Print("Cannot edit lights when not in editing mode. Set r_editlights to 1.\n");
6395                 return;
6396         }
6397
6398         oldselected = r_shadow_selectedlight;
6399         // EditLights doesn't seem to have a "remove" command or something so:
6400         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
6401         for (lightindex = 0;lightindex < range;lightindex++)
6402         {
6403                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
6404                 if (!light)
6405                         continue;
6406                 R_Shadow_SelectLight(light);
6407                 R_Shadow_EditLights_Edit_f();
6408         }
6409         // return to old selected (to not mess editing once selection is locked)
6410         R_Shadow_SelectLight(oldselected);
6411 }
6412
6413 void R_Shadow_EditLights_DrawSelectedLightProperties(void)
6414 {
6415         int lightnumber, lightcount;
6416         size_t lightindex, range;
6417         dlight_t *light;
6418         char temp[256];
6419         float x, y;
6420
6421         if (!r_editlights.integer)
6422                 return;
6423
6424         // update cvars so QC can query them
6425         if (r_shadow_selectedlight)
6426         {
6427                 dpsnprintf(temp, sizeof(temp), "%f %f %f", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);
6428                 Cvar_SetQuick(&r_editlights_current_origin, temp);
6429                 dpsnprintf(temp, sizeof(temp), "%f %f %f", r_shadow_selectedlight->angles[0], r_shadow_selectedlight->angles[1], r_shadow_selectedlight->angles[2]);
6430                 Cvar_SetQuick(&r_editlights_current_angles, temp);
6431                 dpsnprintf(temp, sizeof(temp), "%f %f %f", r_shadow_selectedlight->color[0], r_shadow_selectedlight->color[1], r_shadow_selectedlight->color[2]);
6432                 Cvar_SetQuick(&r_editlights_current_color, temp);
6433                 Cvar_SetValueQuick(&r_editlights_current_radius, r_shadow_selectedlight->radius);
6434                 Cvar_SetValueQuick(&r_editlights_current_corona, r_shadow_selectedlight->corona);
6435                 Cvar_SetValueQuick(&r_editlights_current_coronasize, r_shadow_selectedlight->coronasizescale);
6436                 Cvar_SetValueQuick(&r_editlights_current_style, r_shadow_selectedlight->style);
6437                 Cvar_SetValueQuick(&r_editlights_current_shadows, r_shadow_selectedlight->shadow);
6438                 Cvar_SetQuick(&r_editlights_current_cubemap, r_shadow_selectedlight->cubemapname);
6439                 Cvar_SetValueQuick(&r_editlights_current_ambient, r_shadow_selectedlight->ambientscale);
6440                 Cvar_SetValueQuick(&r_editlights_current_diffuse, r_shadow_selectedlight->diffusescale);
6441                 Cvar_SetValueQuick(&r_editlights_current_specular, r_shadow_selectedlight->specularscale);
6442                 Cvar_SetValueQuick(&r_editlights_current_normalmode, (r_shadow_selectedlight->flags & LIGHTFLAG_NORMALMODE) ? 1 : 0);
6443                 Cvar_SetValueQuick(&r_editlights_current_realtimemode, (r_shadow_selectedlight->flags & LIGHTFLAG_REALTIMEMODE) ? 1 : 0);
6444         }
6445
6446         // draw properties on screen
6447         if (!r_editlights_drawproperties.integer)
6448                 return;
6449         x = vid_conwidth.value - 240;
6450         y = 5;
6451         DrawQ_Pic(x-5, y-5, NULL, 250, 155, 0, 0, 0, 0.75, 0);
6452         lightnumber = -1;
6453         lightcount = 0;
6454         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
6455         for (lightindex = 0;lightindex < range;lightindex++)
6456         {
6457                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
6458                 if (!light)
6459                         continue;
6460                 if (light == r_shadow_selectedlight)
6461                         lightnumber = lightindex;
6462                 lightcount++;
6463         }
6464         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;
6465         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;
6466         y += 8;
6467         if (r_shadow_selectedlight == NULL)
6468                 return;
6469         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;
6470         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;
6471         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;
6472         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;
6473         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;
6474         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;
6475         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;
6476         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;
6477         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;
6478         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;
6479         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;
6480         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;
6481         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;
6482         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;
6483         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;
6484 }
6485
6486 static void R_Shadow_EditLights_ToggleShadow_f(void)
6487 {
6488         if (!r_editlights.integer)
6489         {
6490                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
6491                 return;
6492         }
6493         if (!r_shadow_selectedlight)
6494         {
6495                 Con_Print("No selected light.\n");
6496                 return;
6497         }
6498         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);
6499 }
6500
6501 static void R_Shadow_EditLights_ToggleCorona_f(void)
6502 {
6503         if (!r_editlights.integer)
6504         {
6505                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
6506                 return;
6507         }
6508         if (!r_shadow_selectedlight)
6509         {
6510                 Con_Print("No selected light.\n");
6511                 return;
6512         }
6513         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);
6514 }
6515
6516 static void R_Shadow_EditLights_Remove_f(void)
6517 {
6518         if (!r_editlights.integer)
6519         {
6520                 Con_Print("Cannot remove light when not in editing mode.  Set r_editlights to 1.\n");
6521                 return;
6522         }
6523         if (!r_shadow_selectedlight)
6524         {
6525                 Con_Print("No selected light.\n");
6526                 return;
6527         }
6528         R_Shadow_FreeWorldLight(r_shadow_selectedlight);
6529         r_shadow_selectedlight = NULL;
6530 }
6531
6532 static void R_Shadow_EditLights_Help_f(void)
6533 {
6534         Con_Print(
6535 "Documentation on r_editlights system:\n"
6536 "Settings:\n"
6537 "r_editlights : enable/disable editing mode\n"
6538 "r_editlights_cursordistance : maximum distance of cursor from eye\n"
6539 "r_editlights_cursorpushback : push back cursor this far from surface\n"
6540 "r_editlights_cursorpushoff : push cursor off surface this far\n"
6541 "r_editlights_cursorgrid : snap cursor to grid of this size\n"
6542 "r_editlights_quakelightsizescale : imported quake light entity size scaling\n"
6543 "Commands:\n"
6544 "r_editlights_help : this help\n"
6545 "r_editlights_clear : remove all lights\n"
6546 "r_editlights_reload : reload .rtlights, .lights file, or entities\n"
6547 "r_editlights_lock : lock selection to current light, if already locked - unlock\n"
6548 "r_editlights_save : save to .rtlights file\n"
6549 "r_editlights_spawn : create a light with default settings\n"
6550 "r_editlights_edit command : edit selected light - more documentation below\n"
6551 "r_editlights_remove : remove selected light\n"
6552 "r_editlights_toggleshadow : toggles on/off selected light's shadow property\n"
6553 "r_editlights_importlightentitiesfrommap : reload light entities\n"
6554 "r_editlights_importlightsfile : reload .light file (produced by hlight)\n"
6555 "Edit commands:\n"
6556 "origin x y z : set light location\n"
6557 "originx x: set x component of light location\n"
6558 "originy y: set y component of light location\n"
6559 "originz z: set z component of light location\n"
6560 "move x y z : adjust light location\n"
6561 "movex x: adjust x component of light location\n"
6562 "movey y: adjust y component of light location\n"
6563 "movez z: adjust z component of light location\n"
6564 "angles x y z : set light angles\n"
6565 "anglesx x: set x component of light angles\n"
6566 "anglesy y: set y component of light angles\n"
6567 "anglesz z: set z component of light angles\n"
6568 "color r g b : set color of light (can be brighter than 1 1 1)\n"
6569 "radius radius : set radius (size) of light\n"
6570 "colorscale grey : multiply color of light (1 does nothing)\n"
6571 "colorscale r g b : multiply color of light (1 1 1 does nothing)\n"
6572 "radiusscale scale : multiply radius (size) of light (1 does nothing)\n"
6573 "sizescale scale : multiply radius (size) of light (1 does nothing)\n"
6574 "originscale x y z : multiply origin of light (1 1 1 does nothing)\n"
6575 "style style : set lightstyle of light (flickering patterns, switches, etc)\n"
6576 "cubemap basename : set filter cubemap of light\n"
6577 "shadows 1/0 : turn on/off shadows\n"
6578 "corona n : set corona intensity\n"
6579 "coronasize n : set corona size (0-1)\n"
6580 "ambient n : set ambient intensity (0-1)\n"
6581 "diffuse n : set diffuse intensity (0-1)\n"
6582 "specular n : set specular intensity (0-1)\n"
6583 "normalmode 1/0 : turn on/off rendering of this light in rtworld 0 mode\n"
6584 "realtimemode 1/0 : turn on/off rendering of this light in rtworld 1 mode\n"
6585 "<nothing> : print light properties to console\n"
6586         );
6587 }
6588
6589 static void R_Shadow_EditLights_CopyInfo_f(void)
6590 {
6591         if (!r_editlights.integer)
6592         {
6593                 Con_Print("Cannot copy light info when not in editing mode.  Set r_editlights to 1.\n");
6594                 return;
6595         }
6596         if (!r_shadow_selectedlight)
6597         {
6598                 Con_Print("No selected light.\n");
6599                 return;
6600         }
6601         VectorCopy(r_shadow_selectedlight->angles, r_shadow_bufferlight.angles);
6602         VectorCopy(r_shadow_selectedlight->color, r_shadow_bufferlight.color);
6603         r_shadow_bufferlight.radius = r_shadow_selectedlight->radius;
6604         r_shadow_bufferlight.style = r_shadow_selectedlight->style;
6605         if (r_shadow_selectedlight->cubemapname)
6606                 strlcpy(r_shadow_bufferlight.cubemapname, r_shadow_selectedlight->cubemapname, sizeof(r_shadow_bufferlight.cubemapname));
6607         else
6608                 r_shadow_bufferlight.cubemapname[0] = 0;
6609         r_shadow_bufferlight.shadow = r_shadow_selectedlight->shadow;
6610         r_shadow_bufferlight.corona = r_shadow_selectedlight->corona;
6611         r_shadow_bufferlight.coronasizescale = r_shadow_selectedlight->coronasizescale;
6612         r_shadow_bufferlight.ambientscale = r_shadow_selectedlight->ambientscale;
6613         r_shadow_bufferlight.diffusescale = r_shadow_selectedlight->diffusescale;
6614         r_shadow_bufferlight.specularscale = r_shadow_selectedlight->specularscale;
6615         r_shadow_bufferlight.flags = r_shadow_selectedlight->flags;
6616 }
6617
6618 static void R_Shadow_EditLights_PasteInfo_f(void)
6619 {
6620         if (!r_editlights.integer)
6621         {
6622                 Con_Print("Cannot paste light info when not in editing mode.  Set r_editlights to 1.\n");
6623                 return;
6624         }
6625         if (!r_shadow_selectedlight)
6626         {
6627                 Con_Print("No selected light.\n");
6628                 return;
6629         }
6630         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);
6631 }
6632
6633 static void R_Shadow_EditLights_Lock_f(void)
6634 {
6635         if (!r_editlights.integer)
6636         {
6637                 Con_Print("Cannot lock on light when not in editing mode.  Set r_editlights to 1.\n");
6638                 return;
6639         }
6640         if (r_editlights_lockcursor)
6641         {
6642                 r_editlights_lockcursor = false;
6643                 return;
6644         }
6645         if (!r_shadow_selectedlight)
6646         {
6647                 Con_Print("No selected light to lock on.\n");
6648                 return;
6649         }
6650         r_editlights_lockcursor = true;
6651 }
6652
6653 static void R_Shadow_EditLights_Init(void)
6654 {
6655         Cvar_RegisterVariable(&r_editlights);
6656         Cvar_RegisterVariable(&r_editlights_cursordistance);
6657         Cvar_RegisterVariable(&r_editlights_cursorpushback);
6658         Cvar_RegisterVariable(&r_editlights_cursorpushoff);
6659         Cvar_RegisterVariable(&r_editlights_cursorgrid);
6660         Cvar_RegisterVariable(&r_editlights_quakelightsizescale);
6661         Cvar_RegisterVariable(&r_editlights_drawproperties);
6662         Cvar_RegisterVariable(&r_editlights_current_origin);
6663         Cvar_RegisterVariable(&r_editlights_current_angles);
6664         Cvar_RegisterVariable(&r_editlights_current_color);
6665         Cvar_RegisterVariable(&r_editlights_current_radius);
6666         Cvar_RegisterVariable(&r_editlights_current_corona);
6667         Cvar_RegisterVariable(&r_editlights_current_coronasize);
6668         Cvar_RegisterVariable(&r_editlights_current_style);
6669         Cvar_RegisterVariable(&r_editlights_current_shadows);
6670         Cvar_RegisterVariable(&r_editlights_current_cubemap);
6671         Cvar_RegisterVariable(&r_editlights_current_ambient);
6672         Cvar_RegisterVariable(&r_editlights_current_diffuse);
6673         Cvar_RegisterVariable(&r_editlights_current_specular);
6674         Cvar_RegisterVariable(&r_editlights_current_normalmode);
6675         Cvar_RegisterVariable(&r_editlights_current_realtimemode);
6676         Cmd_AddCommand("r_editlights_help", R_Shadow_EditLights_Help_f, "prints documentation on console commands and variables in rtlight editing system");
6677         Cmd_AddCommand("r_editlights_clear", R_Shadow_EditLights_Clear_f, "removes all world lights (let there be darkness!)");
6678         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)");
6679         Cmd_AddCommand("r_editlights_save", R_Shadow_EditLights_Save_f, "save .rtlights file for current level");
6680         Cmd_AddCommand("r_editlights_spawn", R_Shadow_EditLights_Spawn_f, "creates a light with default properties (let there be light!)");
6681         Cmd_AddCommand("r_editlights_edit", R_Shadow_EditLights_Edit_f, "changes a property on the selected light");
6682         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)");
6683         Cmd_AddCommand("r_editlights_remove", R_Shadow_EditLights_Remove_f, "remove selected light");
6684         Cmd_AddCommand("r_editlights_toggleshadow", R_Shadow_EditLights_ToggleShadow_f, "toggle on/off the shadow option on the selected light");
6685         Cmd_AddCommand("r_editlights_togglecorona", R_Shadow_EditLights_ToggleCorona_f, "toggle on/off the corona option on the selected light");
6686         Cmd_AddCommand("r_editlights_importlightentitiesfrommap", R_Shadow_EditLights_ImportLightEntitiesFromMap_f, "load lights from .ent file or map entities (ignoring .rtlights or .lights file)");
6687         Cmd_AddCommand("r_editlights_importlightsfile", R_Shadow_EditLights_ImportLightsFile_f, "load lights from .lights file (ignoring .rtlights or .ent files and map entities)");
6688         Cmd_AddCommand("r_editlights_copyinfo", R_Shadow_EditLights_CopyInfo_f, "store a copy of all properties (except origin) of the selected light");
6689         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)");
6690         Cmd_AddCommand("r_editlights_lock", R_Shadow_EditLights_Lock_f, "lock selection to current light, if already locked - unlock");
6691 }
6692
6693
6694
6695 /*
6696 =============================================================================
6697
6698 LIGHT SAMPLING
6699
6700 =============================================================================
6701 */
6702
6703 void R_LightPoint(float *color, const vec3_t p, const int flags)
6704 {
6705         int i, numlights, flag;
6706         float f, relativepoint[3], dist, dist2, lightradius2;
6707         vec3_t diffuse, n;
6708         rtlight_t *light;
6709         dlight_t *dlight;
6710
6711         if (r_fullbright.integer)
6712         {
6713                 VectorSet(color, 1, 1, 1);
6714                 return;
6715         }
6716
6717         VectorClear(color);
6718
6719         if (flags & LP_LIGHTMAP)
6720         {
6721                 if (!r_fullbright.integer && r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->lit && r_refdef.scene.worldmodel->brush.LightPoint)
6722                 {
6723                         VectorClear(diffuse);
6724                         r_refdef.scene.worldmodel->brush.LightPoint(r_refdef.scene.worldmodel, p, color, diffuse, n);
6725                         VectorAdd(color, diffuse, color);
6726                 }
6727                 else
6728                         VectorSet(color, 1, 1, 1);
6729                 color[0] += r_refdef.scene.ambient;
6730                 color[1] += r_refdef.scene.ambient;
6731                 color[2] += r_refdef.scene.ambient;
6732         }
6733
6734         if (flags & LP_RTWORLD)
6735         {
6736                 flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
6737                 numlights = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray);
6738                 for (i = 0; i < numlights; i++)
6739                 {
6740                         dlight = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, i);
6741                         if (!dlight)
6742                                 continue;
6743                         light = &dlight->rtlight;
6744                         if (!(light->flags & flag))
6745                                 continue;
6746                         // sample
6747                         lightradius2 = light->radius * light->radius;
6748                         VectorSubtract(light->shadoworigin, p, relativepoint);
6749                         dist2 = VectorLength2(relativepoint);
6750                         if (dist2 >= lightradius2)
6751                                 continue;
6752                         dist = sqrt(dist2) / light->radius;
6753                         f = dist < 1 ? (r_shadow_lightintensityscale.value * ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist))) : 0;
6754                         if (f <= 0)
6755                                 continue;
6756                         // todo: add to both ambient and diffuse
6757                         if (!light->shadow || CL_TraceLine(p, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true).fraction == 1)
6758                                 VectorMA(color, f, light->currentcolor, color);
6759                 }
6760         }
6761         if (flags & LP_DYNLIGHT)
6762         {
6763                 // sample dlights
6764                 for (i = 0;i < r_refdef.scene.numlights;i++)
6765                 {
6766                         light = r_refdef.scene.lights[i];
6767                         // sample
6768                         lightradius2 = light->radius * light->radius;
6769                         VectorSubtract(light->shadoworigin, p, relativepoint);
6770                         dist2 = VectorLength2(relativepoint);
6771                         if (dist2 >= lightradius2)
6772                                 continue;
6773                         dist = sqrt(dist2) / light->radius;
6774                         f = dist < 1 ? (r_shadow_lightintensityscale.value * ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist))) : 0;
6775                         if (f <= 0)
6776                                 continue;
6777                         // todo: add to both ambient and diffuse
6778                         if (!light->shadow || CL_TraceLine(p, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true).fraction == 1)
6779                                 VectorMA(color, f, light->color, color);
6780                 }
6781         }
6782 }
6783
6784 void R_CompleteLightPoint(vec3_t ambient, vec3_t diffuse, vec3_t lightdir, const vec3_t p, const int flags)
6785 {
6786         int i, numlights, flag;
6787         rtlight_t *light;
6788         dlight_t *dlight;
6789         float relativepoint[3];
6790         float color[3];
6791         float dir[3];
6792         float dist;
6793         float dist2;
6794         float intensity;
6795         float sample[5*3];
6796         float lightradius2;
6797
6798         if (r_fullbright.integer)
6799         {
6800                 VectorSet(ambient, 1, 1, 1);
6801                 VectorClear(diffuse);
6802                 VectorClear(lightdir);
6803                 return;
6804         }
6805
6806         if (flags == LP_LIGHTMAP)
6807         {
6808                 VectorSet(ambient, r_refdef.scene.ambient, r_refdef.scene.ambient, r_refdef.scene.ambient);
6809                 VectorClear(diffuse);
6810                 VectorClear(lightdir);
6811                 if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->lit && r_refdef.scene.worldmodel->brush.LightPoint)
6812                         r_refdef.scene.worldmodel->brush.LightPoint(r_refdef.scene.worldmodel, p, ambient, diffuse, lightdir);
6813                 else
6814                         VectorSet(ambient, 1, 1, 1);
6815                 return;
6816         }
6817
6818         memset(sample, 0, sizeof(sample));
6819         VectorSet(sample, r_refdef.scene.ambient, r_refdef.scene.ambient, r_refdef.scene.ambient);
6820
6821         if ((flags & LP_LIGHTMAP) && r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->lit && r_refdef.scene.worldmodel->brush.LightPoint)
6822         {
6823                 vec3_t tempambient;
6824                 VectorClear(tempambient);
6825                 VectorClear(color);
6826                 VectorClear(relativepoint);
6827                 r_refdef.scene.worldmodel->brush.LightPoint(r_refdef.scene.worldmodel, p, tempambient, color, relativepoint);
6828                 VectorScale(tempambient, r_refdef.lightmapintensity, tempambient);
6829                 VectorScale(color, r_refdef.lightmapintensity, color);
6830                 VectorAdd(sample, tempambient, sample);
6831                 VectorMA(sample    , 0.5f            , color, sample    );
6832                 VectorMA(sample + 3, relativepoint[0], color, sample + 3);
6833                 VectorMA(sample + 6, relativepoint[1], color, sample + 6);
6834                 VectorMA(sample + 9, relativepoint[2], color, sample + 9);
6835                 // calculate a weighted average light direction as well
6836                 intensity = VectorLength(color);
6837                 VectorMA(sample + 12, intensity, relativepoint, sample + 12);
6838         }
6839
6840         if (flags & LP_RTWORLD)
6841         {
6842                 flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
6843                 numlights = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray);
6844                 for (i = 0; i < numlights; i++)
6845                 {
6846                         dlight = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, i);
6847                         if (!dlight)
6848                                 continue;
6849                         light = &dlight->rtlight;
6850                         if (!(light->flags & flag))
6851                                 continue;
6852                         // sample
6853                         lightradius2 = light->radius * light->radius;
6854                         VectorSubtract(light->shadoworigin, p, relativepoint);
6855                         dist2 = VectorLength2(relativepoint);
6856                         if (dist2 >= lightradius2)
6857                                 continue;
6858                         dist = sqrt(dist2) / light->radius;
6859                         intensity = min(1.0f, (1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) * r_shadow_lightintensityscale.value;
6860                         if (intensity <= 0.0f)
6861                                 continue;
6862                         if (light->shadow && CL_TraceLine(p, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true).fraction < 1)
6863                                 continue;
6864                         // scale down intensity to add to both ambient and diffuse
6865                         //intensity *= 0.5f;
6866                         VectorNormalize(relativepoint);
6867                         VectorScale(light->currentcolor, intensity, color);
6868                         VectorMA(sample    , 0.5f            , color, sample    );
6869                         VectorMA(sample + 3, relativepoint[0], color, sample + 3);
6870                         VectorMA(sample + 6, relativepoint[1], color, sample + 6);
6871                         VectorMA(sample + 9, relativepoint[2], color, sample + 9);
6872                         // calculate a weighted average light direction as well
6873                         intensity *= VectorLength(color);
6874                         VectorMA(sample + 12, intensity, relativepoint, sample + 12);
6875                 }
6876                 // FIXME: sample bouncegrid too!
6877         }
6878
6879         if (flags & LP_DYNLIGHT)
6880         {
6881                 // sample dlights
6882                 for (i = 0;i < r_refdef.scene.numlights;i++)
6883                 {
6884                         light = r_refdef.scene.lights[i];
6885                         // sample
6886                         lightradius2 = light->radius * light->radius;
6887                         VectorSubtract(light->shadoworigin, p, relativepoint);
6888                         dist2 = VectorLength2(relativepoint);
6889                         if (dist2 >= lightradius2)
6890                                 continue;
6891                         dist = sqrt(dist2) / light->radius;
6892                         intensity = (1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist) * r_shadow_lightintensityscale.value;
6893                         if (intensity <= 0.0f)
6894                                 continue;
6895                         if (light->shadow && CL_TraceLine(p, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false, true).fraction < 1)
6896                                 continue;
6897                         // scale down intensity to add to both ambient and diffuse
6898                         //intensity *= 0.5f;
6899                         VectorNormalize(relativepoint);
6900                         VectorScale(light->currentcolor, intensity, color);
6901                         VectorMA(sample    , 0.5f            , color, sample    );
6902                         VectorMA(sample + 3, relativepoint[0], color, sample + 3);
6903                         VectorMA(sample + 6, relativepoint[1], color, sample + 6);
6904                         VectorMA(sample + 9, relativepoint[2], color, sample + 9);
6905                         // calculate a weighted average light direction as well
6906                         intensity *= VectorLength(color);
6907                         VectorMA(sample + 12, intensity, relativepoint, sample + 12);
6908                 }
6909         }
6910
6911         // calculate the direction we'll use to reduce the sample to a directional light source
6912         VectorCopy(sample + 12, dir);
6913         //VectorSet(dir, sample[3] + sample[4] + sample[5], sample[6] + sample[7] + sample[8], sample[9] + sample[10] + sample[11]);
6914         VectorNormalize(dir);
6915         // extract the diffuse color along the chosen direction and scale it
6916         diffuse[0] = (dir[0]*sample[3] + dir[1]*sample[6] + dir[2]*sample[ 9] + sample[ 0]);
6917         diffuse[1] = (dir[0]*sample[4] + dir[1]*sample[7] + dir[2]*sample[10] + sample[ 1]);
6918         diffuse[2] = (dir[0]*sample[5] + dir[1]*sample[8] + dir[2]*sample[11] + sample[ 2]);
6919         // subtract some of diffuse from ambient
6920         VectorMA(sample, -0.333f, diffuse, ambient);
6921         // store the normalized lightdir
6922         VectorCopy(dir, lightdir);
6923 }