]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - r_shadow.c
Remove a call to ResetProg from ShutdownServer, so after a crash you will be able...
[xonotic/darkplaces.git] / r_shadow.c
index 9fae3b8203786a5f5cb44c49e96d0bb9c97f9d73..3e8cab55b3b824504b43d7e10c1a42d1cd23a075 100644 (file)
 
+/*
+Terminology: Stencil Shadow Volume (sometimes called Stencil Shadows)
+An extrusion of the lit faces, beginning at the original geometry and ending
+further from the light source than the original geometry (presumably at least
+as far as the light's radius, if the light has a radius at all), capped at
+both front and back to avoid any problems (extrusion from dark faces also
+works but has a different set of problems)
+
+This is normally rendered using Carmack's Reverse technique, in which
+backfaces behind zbuffer (zfail) increment the stencil, and frontfaces behind
+zbuffer (zfail) decrement the stencil, the result is a stencil value of zero
+where shadows did not intersect the visible geometry, suitable as a stencil
+mask for rendering lighting everywhere but shadow.
+
+In our case to hopefully avoid the Creative Labs patent, we draw the backfaces
+as decrement and the frontfaces as increment, and we redefine the DepthFunc to
+GL_LESS (the patent uses GL_GEQUAL) which causes zfail when behind surfaces
+and zpass when infront (the patent draws where zpass with a GL_GEQUAL test),
+additionally we clear stencil to 128 to avoid the need for the unclamped
+incr/decr extension (not related to patent).
+
+Patent warning:
+This algorithm may be covered by Creative's patent (US Patent #6384822),
+however that patent is quite specific about increment on backfaces and
+decrement on frontfaces where zpass with GL_GEQUAL depth test, which is
+opposite this implementation and partially opposite Carmack's Reverse paper
+(which uses GL_LESS, but increments on backfaces and decrements on frontfaces).
+
+
+
+Terminology: Stencil Light Volume (sometimes called Light Volumes)
+Similar to a Stencil Shadow Volume, but inverted; rather than containing the
+areas in shadow it contains the areas in light, this can only be built
+quickly for certain limited cases (such as portal visibility from a point),
+but is quite useful for some effects (sunlight coming from sky polygons is
+one possible example, translucent occluders is another example).
+
+
+
+Terminology: Optimized Stencil Shadow Volume
+A Stencil Shadow Volume that has been processed sufficiently to ensure it has
+no duplicate coverage of areas (no need to shadow an area twice), often this
+greatly improves performance but is an operation too costly to use on moving
+lights (however completely optimal Stencil Light Volumes can be constructed
+in some ideal cases).
+
+
+
+Terminology: Per Pixel Lighting (sometimes abbreviated PPL)
+Per pixel evaluation of lighting equations, at a bare minimum this involves
+DOT3 shading of diffuse lighting (per pixel dotproduct of negated incidence
+vector and surface normal, using a texture of the surface bumps, called a
+NormalMap) if supported by hardware; in our case there is support for cards
+which are incapable of DOT3, the quality is quite poor however.  Additionally
+it is desirable to have specular evaluation per pixel, per vertex
+normalization of specular halfangle vectors causes noticable distortion but
+is unavoidable on hardware without GL_ARB_fragment_program or
+GL_ARB_fragment_shader.
+
+
+
+Terminology: Normalization CubeMap
+A cubemap containing normalized dot3-encoded (vectors of length 1 or less
+encoded as RGB colors) for any possible direction, this technique allows per
+pixel calculation of incidence vector for per pixel lighting purposes, which
+would not otherwise be possible per pixel without GL_ARB_fragment_program or
+GL_ARB_fragment_shader.
+
+
+
+Terminology: 2D+1D Attenuation Texturing
+A very crude approximation of light attenuation with distance which results
+in cylindrical light shapes which fade vertically as a streak (some games
+such as Doom3 allow this to be rotated to be less noticable in specific
+cases), the technique is simply modulating lighting by two 2D textures (which
+can be the same) on different axes of projection (XY and Z, typically), this
+is the second best technique available without 3D Attenuation Texturing,
+GL_ARB_fragment_program or GL_ARB_fragment_shader technology.
+
+
+
+Terminology: 2D+1D Inverse Attenuation Texturing
+A clever method described in papers on the Abducted engine, this has a squared
+distance texture (bright on the outside, black in the middle), which is used
+twice using GL_ADD blending, the result of this is used in an inverse modulate
+(GL_ONE_MINUS_DST_ALPHA, GL_ZERO) to implement the equation
+lighting*=(1-((X*X+Y*Y)+(Z*Z))) which is spherical (unlike 2D+1D attenuation
+texturing).
+
+
+
+Terminology: 3D Attenuation Texturing
+A slightly crude approximation of light attenuation with distance, its flaws
+are limited radius and resolution (performance tradeoffs).
+
+
+
+Terminology: 3D Attenuation-Normalization Texturing
+A 3D Attenuation Texture merged with a Normalization CubeMap, by making the
+vectors shorter the lighting becomes darker, a very effective optimization of
+diffuse lighting if 3D Attenuation Textures are already used.
+
+
+
+Terminology: Light Cubemap Filtering
+A technique for modeling non-uniform light distribution according to
+direction, for example a lantern may use a cubemap to describe the light
+emission pattern of the cage around the lantern (as well as soot buildup
+discoloring the light in certain areas), often also used for softened grate
+shadows and light shining through a stained glass window (done crudely by
+texturing the lighting with a cubemap), another good example would be a disco
+light.  This technique is used heavily in many games (Doom3 does not support
+this however).
+
+
+
+Terminology: Light Projection Filtering
+A technique for modeling shadowing of light passing through translucent
+surfaces, allowing stained glass windows and other effects to be done more
+elegantly than possible with Light Cubemap Filtering by applying an occluder
+texture to the lighting combined with a stencil light volume to limit the lit
+area, this technique is used by Doom3 for spotlights and flashlights, among
+other things, this can also be used more generally to render light passing
+through multiple translucent occluders in a scene (using a light volume to
+describe the area beyond the occluder, and thus mask off rendering of all
+other areas).
+
+
+
+Terminology: Doom3 Lighting
+A combination of Stencil Shadow Volume, Per Pixel Lighting, Normalization
+CubeMap, 2D+1D Attenuation Texturing, and Light Projection Filtering, as
+demonstrated by the game Doom3.
+*/
+
 #include "quakedef.h"
 #include "r_shadow.h"
 #include "cl_collision.h"
 #include "portals.h"
+#include "image.h"
 
 extern void R_Shadow_EditLights_Init(void);
 
-#define SHADOWSTAGE_NONE 0
-#define SHADOWSTAGE_STENCIL 1
-#define SHADOWSTAGE_LIGHT 2
-#define SHADOWSTAGE_ERASESTENCIL 3
+typedef enum r_shadowstage_e
+{
+       R_SHADOWSTAGE_NONE,
+       R_SHADOWSTAGE_STENCIL,
+       R_SHADOWSTAGE_STENCILTWOSIDE,
+       R_SHADOWSTAGE_LIGHT_VERTEX,
+       R_SHADOWSTAGE_LIGHT_DOT3,
+       R_SHADOWSTAGE_LIGHT_GLSL,
+       R_SHADOWSTAGE_VISIBLEVOLUMES,
+       R_SHADOWSTAGE_VISIBLELIGHTING,
+}
+r_shadowstage_t;
 
-int r_shadowstage = SHADOWSTAGE_NONE;
-int r_shadow_reloadlights = false;
+r_shadowstage_t r_shadowstage = R_SHADOWSTAGE_NONE;
 
 mempool_t *r_shadow_mempool;
 
 int maxshadowelements;
 int *shadowelements;
-int maxtrianglefacinglight;
-qbyte *trianglefacinglight;
-int *trianglefacinglightlist;
 
-int maxshadowvertices;
-float *shadowvertex3f;
+int maxshadowmark;
+int numshadowmark;
+int *shadowmark;
+int *shadowmarklist;
+int shadowmarkcount;
+
 int maxvertexupdate;
 int *vertexupdate;
+int *vertexremap;
 int vertexupdatenum;
 
+int r_shadow_buffer_numleafpvsbytes;
+qbyte *r_shadow_buffer_leafpvs;
+int *r_shadow_buffer_leaflist;
+
+int r_shadow_buffer_numsurfacepvsbytes;
+qbyte *r_shadow_buffer_surfacepvs;
+int *r_shadow_buffer_surfacelist;
+
 rtexturepool_t *r_shadow_texturepool;
-rtexture_t *r_shadow_normalcubetexture;
 rtexture_t *r_shadow_attenuation2dtexture;
 rtexture_t *r_shadow_attenuation3dtexture;
-rtexture_t *r_shadow_blankbumptexture;
-rtexture_t *r_shadow_blankglosstexture;
-rtexture_t *r_shadow_blankwhitetexture;
 
+// lights are reloaded when this changes
+char r_shadow_mapname[MAX_QPATH];
+
+// used only for light filters (cubemaps)
+rtexturepool_t *r_shadow_filters_texturepool;
+
+cvar_t r_shadow_bumpscale_basetexture = {0, "r_shadow_bumpscale_basetexture", "0"};
+cvar_t r_shadow_bumpscale_bumpmap = {0, "r_shadow_bumpscale_bumpmap", "4"};
+cvar_t r_shadow_debuglight = {0, "r_shadow_debuglight", "-1"};
+cvar_t r_shadow_gloss = {CVAR_SAVE, "r_shadow_gloss", "1"};
+cvar_t r_shadow_gloss2intensity = {0, "r_shadow_gloss2intensity", "0.25"};
+cvar_t r_shadow_glossintensity = {0, "r_shadow_glossintensity", "1"};
 cvar_t r_shadow_lightattenuationpower = {0, "r_shadow_lightattenuationpower", "0.5"};
 cvar_t r_shadow_lightattenuationscale = {0, "r_shadow_lightattenuationscale", "1"};
 cvar_t r_shadow_lightintensityscale = {0, "r_shadow_lightintensityscale", "1"};
-cvar_t r_shadow_realtime_world = {0, "r_shadow_realtime_world", "0"};
-cvar_t r_shadow_realtime_dlight = {0, "r_shadow_realtime_dlight", "0"};
-cvar_t r_shadow_visiblevolumes = {0, "r_shadow_visiblevolumes", "0"};
-cvar_t r_shadow_gloss = {0, "r_shadow_gloss", "1"};
-cvar_t r_shadow_debuglight = {0, "r_shadow_debuglight", "-1"};
-cvar_t r_shadow_scissor = {0, "r_shadow_scissor", "1"};
-cvar_t r_shadow_bumpscale_bumpmap = {0, "r_shadow_bumpscale_bumpmap", "4"};
-cvar_t r_shadow_bumpscale_basetexture = {0, "r_shadow_bumpscale_basetexture", "0"};
-cvar_t r_shadow_polygonoffset = {0, "r_shadow_polygonoffset", "-1"};
 cvar_t r_shadow_portallight = {0, "r_shadow_portallight", "1"};
-cvar_t r_shadow_projectdistance = {0, "r_shadow_projectdistance", "100000"};
+cvar_t r_shadow_projectdistance = {0, "r_shadow_projectdistance", "1000000"};
+cvar_t r_shadow_realtime_dlight = {CVAR_SAVE, "r_shadow_realtime_dlight", "1"};
+cvar_t r_shadow_realtime_dlight_shadows = {CVAR_SAVE, "r_shadow_realtime_dlight_shadows", "1"};
+cvar_t r_shadow_realtime_dlight_portalculling = {0, "r_shadow_realtime_dlight_portalculling", "0"};
+cvar_t r_shadow_realtime_world = {CVAR_SAVE, "r_shadow_realtime_world", "0"};
+cvar_t r_shadow_realtime_world_dlightshadows = {CVAR_SAVE, "r_shadow_realtime_world_dlightshadows", "1"};
+cvar_t r_shadow_realtime_world_lightmaps = {CVAR_SAVE, "r_shadow_realtime_world_lightmaps", "0"};
+cvar_t r_shadow_realtime_world_shadows = {CVAR_SAVE, "r_shadow_realtime_world_shadows", "1"};
+cvar_t r_shadow_realtime_world_compile = {0, "r_shadow_realtime_world_compile", "1"};
+cvar_t r_shadow_realtime_world_compilelight = {0, "r_shadow_realtime_world_compilelight", "1"};
+cvar_t r_shadow_realtime_world_compileshadow = {0, "r_shadow_realtime_world_compileshadow", "1"};
+cvar_t r_shadow_scissor = {0, "r_shadow_scissor", "1"};
+cvar_t r_shadow_shadow_polygonfactor = {0, "r_shadow_shadow_polygonfactor", "0"};
+cvar_t r_shadow_shadow_polygonoffset = {0, "r_shadow_shadow_polygonoffset", "1"};
+cvar_t r_shadow_singlepassvolumegeneration = {0, "r_shadow_singlepassvolumegeneration", "1"};
 cvar_t r_shadow_texture3d = {0, "r_shadow_texture3d", "1"};
+cvar_t r_shadow_visiblelighting = {0, "r_shadow_visiblelighting", "0"};
+cvar_t r_shadow_visiblevolumes = {0, "r_shadow_visiblevolumes", "0"};
+cvar_t r_shadow_glsl = {0, "r_shadow_glsl", "1"};
+cvar_t r_shadow_glsl_offsetmapping = {0, "r_shadow_glsl_offsetmapping", "0"};
+cvar_t r_shadow_glsl_offsetmapping_scale = {0, "r_shadow_glsl_offsetmapping_scale", "-0.04"};
+cvar_t r_shadow_glsl_offsetmapping_bias = {0, "r_shadow_glsl_offsetmapping_bias", "0.04"};
+cvar_t r_shadow_glsl_geforcefxlowquality = {0, "r_shadow_glsl_geforcefxlowquality", "1"};
+cvar_t r_shadow_glsl_surfacenormalize = {0, "r_shadow_glsl_surfacenormalize", "1"};
+cvar_t gl_ext_stenciltwoside = {0, "gl_ext_stenciltwoside", "1"};
+cvar_t r_editlights = {0, "r_editlights", "0"};
+cvar_t r_editlights_cursordistance = {0, "r_editlights_cursordistance", "1024"};
+cvar_t r_editlights_cursorpushback = {0, "r_editlights_cursorpushback", "0"};
+cvar_t r_editlights_cursorpushoff = {0, "r_editlights_cursorpushoff", "4"};
+cvar_t r_editlights_cursorgrid = {0, "r_editlights_cursorgrid", "4"};
+cvar_t r_editlights_quakelightsizescale = {CVAR_SAVE, "r_editlights_quakelightsizescale", "0.8"};
+
+float r_shadow_attenpower, r_shadow_attenscale;
+
+rtlight_t *r_shadow_compilingrtlight;
+dlight_t *r_shadow_worldlightchain;
+dlight_t *r_shadow_selectedlight;
+dlight_t r_shadow_bufferlight;
+vec3_t r_editlights_cursorlocation;
+
+rtexture_t *lighttextures[5];
+
+extern int con_vislines;
+
+typedef struct cubemapinfo_s
+{
+       char basename[64];
+       rtexture_t *texture;
+}
+cubemapinfo_t;
+
+#define MAX_CUBEMAPS 256
+static int numcubemaps;
+static cubemapinfo_t cubemaps[MAX_CUBEMAPS];
+
+#define SHADERPERMUTATION_SPECULAR (1<<0)
+#define SHADERPERMUTATION_FOG (1<<1)
+#define SHADERPERMUTATION_CUBEFILTER (1<<2)
+#define SHADERPERMUTATION_OFFSETMAPPING (1<<3)
+#define SHADERPERMUTATION_SURFACENORMALIZE (1<<4)
+#define SHADERPERMUTATION_GEFORCEFX (1<<5)
+#define SHADERPERMUTATION_COUNT (1<<6)
 
-int c_rt_lights, c_rt_clears, c_rt_scissored;
-int c_rt_shadowmeshes, c_rt_shadowtris, c_rt_lightmeshes, c_rt_lighttris;
-int c_rtcached_shadowmeshes, c_rtcached_shadowtris;
+GLhandleARB r_shadow_program_light[SHADERPERMUTATION_COUNT];
 
+void R_Shadow_UncompileWorldLights(void);
 void R_Shadow_ClearWorldLights(void);
 void R_Shadow_SaveWorldLights(void);
 void R_Shadow_LoadWorldLights(void);
 void R_Shadow_LoadLightsFile(void);
 void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void);
+void R_Shadow_EditLights_Reload_f(void);
+void R_Shadow_ValidateCvars(void);
+static void R_Shadow_MakeTextures(void);
+void R_Shadow_DrawWorldLightShadowVolume(matrix4x4_t *matrix, dlight_t *light);
+
+const char *builtinshader_light_vert =
+"// ambient+diffuse+specular+normalmap+attenuation+cubemap+fog shader\n"
+"// written by Forest 'LordHavoc' Hale\n"
+"\n"
+"uniform vec3 LightPosition;\n"
+"\n"
+"varying vec2 TexCoord;\n"
+"varying vec3 CubeVector;\n"
+"varying vec3 LightVector;\n"
+"\n"
+"#if defined(USESPECULAR) || defined(USEFOG) || defined(USEOFFSETMAPPING)\n"
+"uniform vec3 EyePosition;\n"
+"varying vec3 EyeVector;\n"
+"#endif\n"
+"\n"
+"// TODO: get rid of tangentt (texcoord2) and use a crossproduct to regenerate it from tangents (texcoord1) and normal (texcoord3)\n"
+"\n"
+"void main(void)\n"
+"{\n"
+"      // copy the surface texcoord\n"
+"      TexCoord = gl_MultiTexCoord0.st;\n"
+"\n"
+"      // transform vertex position into light attenuation/cubemap space\n"
+"      // (-1 to +1 across the light box)\n"
+"      CubeVector = vec3(gl_TextureMatrix[3] * gl_Vertex);\n"
+"\n"
+"      // transform unnormalized light direction into tangent space\n"
+"      // (we use unnormalized to ensure that it interpolates correctly and then\n"
+"      //  normalize it per pixel)\n"
+"      vec3 lightminusvertex = LightPosition - gl_Vertex.xyz;\n"
+"      LightVector.x = -dot(lightminusvertex, gl_MultiTexCoord1.xyz);\n"
+"      LightVector.y = -dot(lightminusvertex, gl_MultiTexCoord2.xyz);\n"
+"      LightVector.z = -dot(lightminusvertex, gl_MultiTexCoord3.xyz);\n"
+"\n"
+"#if defined(USESPECULAR) || defined(USEFOG) || defined(USEOFFSETMAPPING)\n"
+"      // transform unnormalized eye direction into tangent space\n"
+"      vec3 eyeminusvertex = EyePosition - gl_Vertex.xyz;\n"
+"      EyeVector.x = -dot(eyeminusvertex, gl_MultiTexCoord1.xyz);\n"
+"      EyeVector.y = -dot(eyeminusvertex, gl_MultiTexCoord2.xyz);\n"
+"      EyeVector.z = -dot(eyeminusvertex, gl_MultiTexCoord3.xyz);\n"
+"#endif\n"
+"\n"
+"      // transform vertex to camera space, using ftransform to match non-VS\n"
+"      // rendering\n"
+"      gl_Position = ftransform();\n"
+"}\n"
+;
+
+const char *builtinshader_light_frag =
+"// ambient+diffuse+specular+normalmap+attenuation+cubemap+fog shader\n"
+"// written by Forest 'LordHavoc' Hale\n"
+"\n"
+"// use half floats on GEFORCEFX for math performance, otherwise don't\n"
+"#ifndef GEFORCEFX\n"
+"#define half float\n"
+"#define hvec2 vec2\n"
+"#define hvec3 vec3\n"
+"#define hvec4 vec4\n"
+"#endif\n"
+"\n"
+"uniform hvec3 LightColor;\n"
+"#ifdef USEOFFSETMAPPING\n"
+"uniform half OffsetMapping_Scale;\n"
+"uniform half OffsetMapping_Bias;\n"
+"#endif\n"
+"#ifdef USESPECULAR\n"
+"uniform half SpecularPower;\n"
+"#endif\n"
+"#ifdef USEFOG\n"
+"uniform half FogRangeRecip;\n"
+"#endif\n"
+"uniform half AmbientScale;\n"
+"uniform half DiffuseScale;\n"
+"#ifdef USESPECULAR\n"
+"uniform half SpecularScale;\n"
+"#endif\n"
+"\n"
+"uniform sampler2D Texture_Normal;\n"
+"uniform sampler2D Texture_Color;\n"
+"#ifdef USESPECULAR\n"
+"uniform sampler2D Texture_Gloss;\n"
+"#endif\n"
+"#ifdef USECUBEFILTER\n"
+"uniform samplerCube Texture_Cube;\n"
+"#endif\n"
+"#ifdef USEFOG\n"
+"uniform sampler2D Texture_FogMask;\n"
+"#endif\n"
+"\n"
+"varying vec2 TexCoord;\n"
+"varying vec3 CubeVector;\n"
+"varying vec3 LightVector;\n"
+"#if defined(USESPECULAR) || defined(USEFOG) || defined(USEOFFSETMAPPING)\n"
+"varying vec3 EyeVector;\n"
+"#endif\n"
+"\n"
+"void main(void)\n"
+"{\n"
+"      // attenuation\n"
+"      //\n"
+"      // the attenuation is (1-(x*x+y*y+z*z)) which gives a large bright\n"
+"      // center and sharp falloff at the edge, this is about the most efficient\n"
+"      // we can get away with as far as providing illumination.\n"
+"      //\n"
+"      // pow(1-(x*x+y*y+z*z), 4) is far more realistic but needs large lights to\n"
+"      // provide significant illumination, large = slow = pain.\n"
+"      half colorscale = max(1.0 - dot(CubeVector, CubeVector), 0.0);\n"
+"\n"
+"#ifdef USEFOG\n"
+"      // apply fog\n"
+"      colorscale *= texture2D(Texture_FogMask, hvec2(length(EyeVector)*FogRangeRecip, 0)).x;\n"
+"#endif\n"
+"\n"
+"#ifdef USEOFFSETMAPPING\n"
+"      // this is 3 sample because of ATI Radeon 9500-9800/X300 limits\n"
+"      hvec2 OffsetVector = normalize(EyeVector).xy * vec2(-0.333, 0.333);\n"
+"      hvec2 TexCoordOffset = TexCoord + OffsetVector * (OffsetMapping_Bias + OffsetMapping_Scale * texture2D(Texture_Normal, TexCoord).w);\n"
+"      TexCoordOffset += OffsetVector * (OffsetMapping_Bias + OffsetMapping_Scale * texture2D(Texture_Normal, TexCoordOffset).w);\n"
+"      TexCoordOffset += OffsetVector * (OffsetMapping_Bias + OffsetMapping_Scale * texture2D(Texture_Normal, TexCoordOffset).w);\n"
+"#define TexCoord TexCoordOffset\n"
+"#endif\n"
+"\n"
+"      // get the surface normal\n"
+"#ifdef SURFACENORMALIZE\n"
+"      hvec3 surfacenormal = normalize(hvec3(texture2D(Texture_Normal, TexCoord)) - 0.5);\n"
+"#else\n"
+"      hvec3 surfacenormal = -1.0 + 2.0 * hvec3(texture2D(Texture_Normal, TexCoord));\n"
+"#endif\n"
+"\n"
+"      // calculate shading\n"
+"      hvec3 diffusenormal = hvec3(normalize(LightVector));\n"
+"      hvec3 color = hvec3(texture2D(Texture_Color, TexCoord)) * (AmbientScale + DiffuseScale * max(dot(surfacenormal, diffusenormal), 0.0));\n"
+"#ifdef USESPECULAR\n"
+"      hvec3 specularnormal = hvec3(normalize(diffusenormal + hvec3(normalize(EyeVector))));\n"
+"      color += hvec3(texture2D(Texture_Gloss, TexCoord)) * (SpecularScale * pow(max(dot(surfacenormal, specularnormal), 0.0), SpecularPower));\n"
+"#endif\n"
+"\n"
+"#ifdef USECUBEFILTER\n"
+"      // apply light cubemap filter\n"
+"      color *= hvec3(textureCube(Texture_Cube, CubeVector));\n"
+"#endif\n"
+"\n"
+"      // calculate fragment color (apply light color and attenuation/fog scaling)\n"
+"      gl_FragColor = hvec4(color * LightColor * colorscale, 1);\n"
+"}\n"
+;
 
 void r_shadow_start(void)
 {
+       int i;
+       // if not a GeForce FX, turn off the lowquality cvar
+       if (strncmp(gl_renderer, "GeForce FX ", strlen("GeForce FX ")))
+               Cvar_SetValue("r_shadow_glsl_geforcefxlowquality", 0);
        // allocate vertex processing arrays
-       r_shadow_mempool = Mem_AllocPool("R_Shadow");
+       numcubemaps = 0;
+       r_shadow_attenuation2dtexture = NULL;
+       r_shadow_attenuation3dtexture = NULL;
+       r_shadow_texturepool = NULL;
+       r_shadow_filters_texturepool = NULL;
+       R_Shadow_ValidateCvars();
+       R_Shadow_MakeTextures();
        maxshadowelements = 0;
        shadowelements = NULL;
-       maxshadowvertices = 0;
-       shadowvertex3f = NULL;
        maxvertexupdate = 0;
        vertexupdate = NULL;
+       vertexremap = NULL;
        vertexupdatenum = 0;
-       maxtrianglefacinglight = 0;
-       trianglefacinglight = NULL;
-       trianglefacinglightlist = NULL;
-       r_shadow_normalcubetexture = NULL;
-       r_shadow_attenuation2dtexture = NULL;
-       r_shadow_attenuation3dtexture = NULL;
-       r_shadow_blankbumptexture = NULL;
-       r_shadow_blankglosstexture = NULL;
-       r_shadow_blankwhitetexture = NULL;
-       r_shadow_texturepool = NULL;
-       R_Shadow_ClearWorldLights();
-       r_shadow_reloadlights = true;
+       maxshadowmark = 0;
+       numshadowmark = 0;
+       shadowmark = NULL;
+       shadowmarklist = NULL;
+       shadowmarkcount = 0;
+       r_shadow_buffer_numleafpvsbytes = 0;
+       r_shadow_buffer_leafpvs = NULL;
+       r_shadow_buffer_leaflist = NULL;
+       r_shadow_buffer_numsurfacepvsbytes = 0;
+       r_shadow_buffer_surfacepvs = NULL;
+       r_shadow_buffer_surfacelist = NULL;
+       for (i = 0;i < SHADERPERMUTATION_COUNT;i++)
+               r_shadow_program_light[i] = 0;
+       if (gl_support_fragment_shader)
+       {
+               char *vertstring, *fragstring;
+               int vertstrings_count;
+               int fragstrings_count;
+               const char *vertstrings_list[SHADERPERMUTATION_COUNT+1];
+               const char *fragstrings_list[SHADERPERMUTATION_COUNT+1];
+               vertstring = (char *)FS_LoadFile("glsl/light.vert", tempmempool, false);
+               fragstring = (char *)FS_LoadFile("glsl/light.frag", tempmempool, false);
+               for (i = 0;i < SHADERPERMUTATION_COUNT;i++)
+               {
+                       vertstrings_count = 0;
+                       fragstrings_count = 0;
+                       if (i & SHADERPERMUTATION_SPECULAR)
+                       {
+                               vertstrings_list[vertstrings_count++] = "#define USESPECULAR\n";
+                               fragstrings_list[fragstrings_count++] = "#define USESPECULAR\n";
+                       }
+                       if (i & SHADERPERMUTATION_FOG)
+                       {
+                               vertstrings_list[vertstrings_count++] = "#define USEFOG\n";
+                               fragstrings_list[fragstrings_count++] = "#define USEFOG\n";
+                       }
+                       if (i & SHADERPERMUTATION_CUBEFILTER)
+                       {
+                               vertstrings_list[vertstrings_count++] = "#define USECUBEFILTER\n";
+                               fragstrings_list[fragstrings_count++] = "#define USECUBEFILTER\n";
+                       }
+                       if (i & SHADERPERMUTATION_OFFSETMAPPING)
+                       {
+                               vertstrings_list[vertstrings_count++] = "#define USEOFFSETMAPPING\n";
+                               fragstrings_list[fragstrings_count++] = "#define USEOFFSETMAPPING\n";
+                       }
+                       if (i & SHADERPERMUTATION_SURFACENORMALIZE)
+                       {
+                               vertstrings_list[vertstrings_count++] = "#define SURFACENORMALIZE\n";
+                               fragstrings_list[fragstrings_count++] = "#define SURFACENORMALIZE\n";
+                       }
+                       if (i & SHADERPERMUTATION_GEFORCEFX)
+                       {
+                               vertstrings_list[vertstrings_count++] = "#define GEFORCEFX\n";
+                               fragstrings_list[fragstrings_count++] = "#define GEFORCEFX\n";
+                       }
+                       vertstrings_list[vertstrings_count++] = vertstring ? vertstring : builtinshader_light_vert;
+                       fragstrings_list[fragstrings_count++] = fragstring ? fragstring : builtinshader_light_frag;
+                       r_shadow_program_light[i] = GL_Backend_CompileProgram(vertstrings_count, vertstrings_list, fragstrings_count, fragstrings_list);
+                       if (!r_shadow_program_light[i])
+                       {
+                               Con_Printf("permutation %s %s %s %s %s %s failed for shader %s, some features may not work properly!\n", i & 1 ? "specular" : "", i & 2 ? "fog" : "", i & 4 ? "cubefilter" : "", i & 8 ? "offsetmapping" : "", i & 16 ? "surfacenormalize" : "", i & 32 ? "geforcefx" : "", "glsl/light");
+                               continue;
+                       }
+                       qglUseProgramObjectARB(r_shadow_program_light[i]);
+                       qglUniform1iARB(qglGetUniformLocationARB(r_shadow_program_light[i], "Texture_Normal"), 0);CHECKGLERROR
+                       qglUniform1iARB(qglGetUniformLocationARB(r_shadow_program_light[i], "Texture_Color"), 1);CHECKGLERROR
+                       if (i & SHADERPERMUTATION_SPECULAR)
+                       {
+                               qglUniform1iARB(qglGetUniformLocationARB(r_shadow_program_light[i], "Texture_Gloss"), 2);CHECKGLERROR
+                       }
+                       if (i & SHADERPERMUTATION_CUBEFILTER)
+                       {
+                               qglUniform1iARB(qglGetUniformLocationARB(r_shadow_program_light[i], "Texture_Cube"), 3);CHECKGLERROR
+                       }
+                       if (i & SHADERPERMUTATION_FOG)
+                       {
+                               qglUniform1iARB(qglGetUniformLocationARB(r_shadow_program_light[i], "Texture_FogMask"), 4);CHECKGLERROR
+                       }
+               }
+               qglUseProgramObjectARB(0);
+               if (fragstring)
+                       Mem_Free(fragstring);
+               if (vertstring)
+                       Mem_Free(vertstring);
+       }
 }
 
 void r_shadow_shutdown(void)
 {
-       R_Shadow_ClearWorldLights();
-       r_shadow_reloadlights = true;
-       r_shadow_normalcubetexture = NULL;
+       int i;
+       R_Shadow_UncompileWorldLights();
+       for (i = 0;i < SHADERPERMUTATION_COUNT;i++)
+       {
+               if (r_shadow_program_light[i])
+               {
+                       GL_Backend_FreeProgram(r_shadow_program_light[i]);
+                       r_shadow_program_light[i] = 0;
+               }
+       }
+       numcubemaps = 0;
        r_shadow_attenuation2dtexture = NULL;
        r_shadow_attenuation3dtexture = NULL;
-       r_shadow_blankbumptexture = NULL;
-       r_shadow_blankglosstexture = NULL;
-       r_shadow_blankwhitetexture = NULL;
        R_FreeTexturePool(&r_shadow_texturepool);
+       R_FreeTexturePool(&r_shadow_filters_texturepool);
        maxshadowelements = 0;
+       if (shadowelements)
+               Mem_Free(shadowelements);
        shadowelements = NULL;
-       maxshadowvertices = 0;
-       shadowvertex3f = NULL;
        maxvertexupdate = 0;
+       if (vertexupdate)
+               Mem_Free(vertexupdate);
        vertexupdate = NULL;
+       if (vertexremap)
+               Mem_Free(vertexremap);
+       vertexremap = NULL;
        vertexupdatenum = 0;
-       maxtrianglefacinglight = 0;
-       trianglefacinglight = NULL;
-       trianglefacinglightlist = NULL;
-       Mem_FreePool(&r_shadow_mempool);
+       maxshadowmark = 0;
+       numshadowmark = 0;
+       if (shadowmark)
+               Mem_Free(shadowmark);
+       shadowmark = NULL;
+       if (shadowmarklist)
+               Mem_Free(shadowmarklist);
+       shadowmarklist = NULL;
+       shadowmarkcount = 0;
+       r_shadow_buffer_numleafpvsbytes = 0;
+       if (r_shadow_buffer_leafpvs)
+               Mem_Free(r_shadow_buffer_leafpvs);
+       r_shadow_buffer_leafpvs = NULL;
+       if (r_shadow_buffer_leaflist)
+               Mem_Free(r_shadow_buffer_leaflist);
+       r_shadow_buffer_leaflist = NULL;
+       r_shadow_buffer_numsurfacepvsbytes = 0;
+       if (r_shadow_buffer_surfacepvs)
+               Mem_Free(r_shadow_buffer_surfacepvs);
+       r_shadow_buffer_surfacepvs = NULL;
+       if (r_shadow_buffer_surfacelist)
+               Mem_Free(r_shadow_buffer_surfacelist);
+       r_shadow_buffer_surfacelist = NULL;
 }
 
 void r_shadow_newmap(void)
 {
-       R_Shadow_ClearWorldLights();
-       r_shadow_reloadlights = true;
+}
+
+void R_Shadow_Help_f(void)
+{
+       Con_Printf(
+"Documentation on r_shadow system:\n"
+"Settings:\n"
+"r_shadow_bumpscale_basetexture : base texture as bumpmap with this scale\n"
+"r_shadow_bumpscale_bumpmap : depth scale for bumpmap conversion\n"
+"r_shadow_debuglight : render only this light number (-1 = all)\n"
+"r_shadow_gloss 0/1/2 : no gloss, gloss textures only, force gloss\n"
+"r_shadow_gloss2intensity : brightness of forced gloss\n"
+"r_shadow_glossintensity : brightness of textured gloss\n"
+"r_shadow_lightattenuationpower : used to generate attenuation texture\n"
+"r_shadow_lightattenuationscale : used to generate attenuation texture\n"
+"r_shadow_lightintensityscale : scale rendering brightness of all lights\n"
+"r_shadow_portallight : use portal visibility for static light precomputation\n"
+"r_shadow_projectdistance : shadow volume projection distance\n"
+"r_shadow_realtime_dlight : use high quality dynamic lights in normal mode\n"
+"r_shadow_realtime_dlight_shadows : cast shadows from dlights\n"
+"r_shadow_realtime_dlight_portalculling : work hard to reduce graphics work\n"
+"r_shadow_realtime_world : use high quality world lighting mode\n"
+"r_shadow_realtime_world_dlightshadows : cast shadows from dlights\n"
+"r_shadow_realtime_world_lightmaps : use lightmaps in addition to lights\n"
+"r_shadow_realtime_world_shadows : cast shadows from world lights\n"
+"r_shadow_realtime_world_compile : compile surface/visibility information\n"
+"r_shadow_realtime_world_compilelight : compile lighting geometry\n"
+"r_shadow_realtime_world_compileshadow : compile shadow geometry\n"
+"r_shadow_glsl : use OpenGL Shading Language for lighting\n"
+"r_shadow_glsl_offsetmapping : enables Offset Mapping bumpmap enhancement\n"
+"r_shadow_glsl_offsetmapping_scale : controls depth of Offset Mapping\n"
+"r_shadow_glsl_offsetmapping_bias : should be negative half of scale\n"
+"r_shadow_glsl_geforcefxlowquality : use lower quality lighting\n"
+"r_shadow_glsl_surfacenormalize : makes bumpmapping slightly higher quality\n"
+"r_shadow_scissor : use scissor optimization\n"
+"r_shadow_shadow_polygonfactor : nudge shadow volumes closer/further\n"
+"r_shadow_shadow_polygonoffset : nudge shadow volumes closer/further\n"
+"r_shadow_singlepassvolumegeneration : selects shadow volume algorithm\n"
+"r_shadow_texture3d : use 3d attenuation texture (if hardware supports)\n"
+"r_shadow_visiblelighting : useful for performance testing; bright = slow!\n"
+"r_shadow_visiblevolumes : useful for performance testing; bright = slow!\n"
+"Commands:\n"
+"r_shadow_help : this help\n"
+       );
 }
 
 void R_Shadow_Init(void)
 {
+       Cvar_RegisterVariable(&r_shadow_bumpscale_basetexture);
+       Cvar_RegisterVariable(&r_shadow_bumpscale_bumpmap);
+       Cvar_RegisterVariable(&r_shadow_debuglight);
+       Cvar_RegisterVariable(&r_shadow_gloss);
+       Cvar_RegisterVariable(&r_shadow_gloss2intensity);
+       Cvar_RegisterVariable(&r_shadow_glossintensity);
        Cvar_RegisterVariable(&r_shadow_lightattenuationpower);
        Cvar_RegisterVariable(&r_shadow_lightattenuationscale);
        Cvar_RegisterVariable(&r_shadow_lightintensityscale);
-       Cvar_RegisterVariable(&r_shadow_realtime_world);
-       Cvar_RegisterVariable(&r_shadow_realtime_dlight);
-       Cvar_RegisterVariable(&r_shadow_visiblevolumes);
-       Cvar_RegisterVariable(&r_shadow_gloss);
-       Cvar_RegisterVariable(&r_shadow_debuglight);
-       Cvar_RegisterVariable(&r_shadow_scissor);
-       Cvar_RegisterVariable(&r_shadow_bumpscale_bumpmap);
-       Cvar_RegisterVariable(&r_shadow_bumpscale_basetexture);
-       Cvar_RegisterVariable(&r_shadow_polygonoffset);
        Cvar_RegisterVariable(&r_shadow_portallight);
        Cvar_RegisterVariable(&r_shadow_projectdistance);
+       Cvar_RegisterVariable(&r_shadow_realtime_dlight);
+       Cvar_RegisterVariable(&r_shadow_realtime_dlight_shadows);
+       Cvar_RegisterVariable(&r_shadow_realtime_dlight_portalculling);
+       Cvar_RegisterVariable(&r_shadow_realtime_world);
+       Cvar_RegisterVariable(&r_shadow_realtime_world_dlightshadows);
+       Cvar_RegisterVariable(&r_shadow_realtime_world_lightmaps);
+       Cvar_RegisterVariable(&r_shadow_realtime_world_shadows);
+       Cvar_RegisterVariable(&r_shadow_realtime_world_compile);
+       Cvar_RegisterVariable(&r_shadow_realtime_world_compilelight);
+       Cvar_RegisterVariable(&r_shadow_realtime_world_compileshadow);
+       Cvar_RegisterVariable(&r_shadow_scissor);
+       Cvar_RegisterVariable(&r_shadow_shadow_polygonfactor);
+       Cvar_RegisterVariable(&r_shadow_shadow_polygonoffset);
+       Cvar_RegisterVariable(&r_shadow_singlepassvolumegeneration);
        Cvar_RegisterVariable(&r_shadow_texture3d);
+       Cvar_RegisterVariable(&r_shadow_visiblelighting);
+       Cvar_RegisterVariable(&r_shadow_visiblevolumes);
+       Cvar_RegisterVariable(&r_shadow_glsl);
+       Cvar_RegisterVariable(&r_shadow_glsl_offsetmapping);
+       Cvar_RegisterVariable(&r_shadow_glsl_offsetmapping_scale);
+       Cvar_RegisterVariable(&r_shadow_glsl_offsetmapping_bias);
+       Cvar_RegisterVariable(&r_shadow_glsl_geforcefxlowquality);
+       Cvar_RegisterVariable(&r_shadow_glsl_surfacenormalize);
+       Cvar_RegisterVariable(&gl_ext_stenciltwoside);
+       if (gamemode == GAME_TENEBRAE)
+       {
+               Cvar_SetValue("r_shadow_gloss", 2);
+               Cvar_SetValue("r_shadow_bumpscale_basetexture", 4);
+       }
+       Cmd_AddCommand("r_shadow_help", R_Shadow_Help_f);
        R_Shadow_EditLights_Init();
+       r_shadow_mempool = Mem_AllocPool("R_Shadow", 0, NULL);
+       r_shadow_worldlightchain = NULL;
+       maxshadowelements = 0;
+       shadowelements = NULL;
+       maxvertexupdate = 0;
+       vertexupdate = NULL;
+       vertexremap = NULL;
+       vertexupdatenum = 0;
+       maxshadowmark = 0;
+       numshadowmark = 0;
+       shadowmark = NULL;
+       shadowmarklist = NULL;
+       shadowmarkcount = 0;
+       r_shadow_buffer_numleafpvsbytes = 0;
+       r_shadow_buffer_leafpvs = NULL;
+       r_shadow_buffer_leaflist = NULL;
+       r_shadow_buffer_numsurfacepvsbytes = 0;
+       r_shadow_buffer_surfacepvs = NULL;
+       r_shadow_buffer_surfacelist = NULL;
        R_RegisterModule("R_Shadow", r_shadow_start, r_shadow_shutdown, r_shadow_newmap);
 }
 
-int R_Shadow_MakeTriangleShadowFlags_Vertex3f(const int *elements, const float *vertex, int numtris, qbyte *facing, int *list, const float *relativelightorigin)
+matrix4x4_t matrix_attenuationxyz =
 {
-       int i, tris = 0;
-       const float *v0, *v1, *v2;
-       for (i = 0;i < numtris;i++, elements += 3)
        {
-               // calculate triangle facing flag
-               v0 = vertex + elements[0] * 3;
-               v1 = vertex + elements[1] * 3;
-               v2 = vertex + elements[2] * 3;
-               if(PointInfrontOfTriangle(relativelightorigin, v0, v1, v2))
-               {
-                       facing[i] = true;
-                       list[tris++] = i;
-               }
-               else
-                       facing[i] = false;
+               {0.5, 0.0, 0.0, 0.5},
+               {0.0, 0.5, 0.0, 0.5},
+               {0.0, 0.0, 0.5, 0.5},
+               {0.0, 0.0, 0.0, 1.0}
+       }
+};
+
+matrix4x4_t matrix_attenuationz =
+{
+       {
+               {0.0, 0.0, 0.5, 0.5},
+               {0.0, 0.0, 0.0, 0.5},
+               {0.0, 0.0, 0.0, 0.5},
+               {0.0, 0.0, 0.0, 1.0}
+       }
+};
+
+int *R_Shadow_ResizeShadowElements(int numtris)
+{
+       // make sure shadowelements is big enough for this volume
+       if (maxshadowelements < numtris * 24)
+       {
+               maxshadowelements = numtris * 24;
+               if (shadowelements)
+                       Mem_Free(shadowelements);
+               shadowelements = Mem_Alloc(r_shadow_mempool, maxshadowelements * sizeof(int));
+       }
+       return shadowelements;
+}
+
+static void R_Shadow_EnlargeLeafSurfaceBuffer(int numleafs, int numsurfaces)
+{
+       int numleafpvsbytes = (((numleafs + 7) >> 3) + 255) & ~255;
+       int numsurfacepvsbytes = (((numsurfaces + 7) >> 3) + 255) & ~255;
+       if (r_shadow_buffer_numleafpvsbytes < numleafpvsbytes)
+       {
+               if (r_shadow_buffer_leafpvs)
+                       Mem_Free(r_shadow_buffer_leafpvs);
+               if (r_shadow_buffer_leaflist)
+                       Mem_Free(r_shadow_buffer_leaflist);
+               r_shadow_buffer_numleafpvsbytes = numleafpvsbytes;
+               r_shadow_buffer_leafpvs = Mem_Alloc(r_shadow_mempool, r_shadow_buffer_numleafpvsbytes);
+               r_shadow_buffer_leaflist = Mem_Alloc(r_shadow_mempool, r_shadow_buffer_numleafpvsbytes * 8 * sizeof(*r_shadow_buffer_leaflist));
+       }
+       if (r_shadow_buffer_numsurfacepvsbytes < numsurfacepvsbytes)
+       {
+               if (r_shadow_buffer_surfacepvs)
+                       Mem_Free(r_shadow_buffer_surfacepvs);
+               if (r_shadow_buffer_surfacelist)
+                       Mem_Free(r_shadow_buffer_surfacelist);
+               r_shadow_buffer_numsurfacepvsbytes = numsurfacepvsbytes;
+               r_shadow_buffer_surfacepvs = Mem_Alloc(r_shadow_mempool, r_shadow_buffer_numsurfacepvsbytes);
+               r_shadow_buffer_surfacelist = Mem_Alloc(r_shadow_mempool, r_shadow_buffer_numsurfacepvsbytes * 8 * sizeof(*r_shadow_buffer_surfacelist));
+       }
+}
+
+void R_Shadow_PrepareShadowMark(int numtris)
+{
+       // make sure shadowmark is big enough for this volume
+       if (maxshadowmark < numtris)
+       {
+               maxshadowmark = numtris;
+               if (shadowmark)
+                       Mem_Free(shadowmark);
+               if (shadowmarklist)
+                       Mem_Free(shadowmarklist);
+               shadowmark = Mem_Alloc(r_shadow_mempool, maxshadowmark * sizeof(*shadowmark));
+               shadowmarklist = Mem_Alloc(r_shadow_mempool, maxshadowmark * sizeof(*shadowmarklist));
+               shadowmarkcount = 0;
        }
-       return tris;
+       shadowmarkcount++;
+       // if shadowmarkcount wrapped we clear the array and adjust accordingly
+       if (shadowmarkcount == 0)
+       {
+               shadowmarkcount = 1;
+               memset(shadowmark, 0, maxshadowmark * sizeof(*shadowmark));
+       }
+       numshadowmark = 0;
 }
 
-int R_Shadow_BuildShadowVolume(const int *elements, const int *neighbors, int numverts, const qbyte *facing, const int *facinglist, int numfacing, int *out, float *vertices, const float *relativelightorigin, float projectdistance)
+int R_Shadow_ConstructShadowVolume(int innumvertices, int innumtris, const int *inelement3i, const int *inneighbor3i, const float *invertex3f, int *outnumvertices, int *outelement3i, float *outvertex3f, const float *projectorigin, float projectdistance, int numshadowmarktris, const int *shadowmarktris)
 {
-       int i, j, tris, vertexpointeradjust = numverts * 3;
-       const int *e, *n;
-       float *vin, *vout;
+       int i, j;
+       int outtriangles = 0, outvertices = 0;
+       const int *element;
+       const float *vertex;
 
-       if (maxvertexupdate < numverts)
+       if (maxvertexupdate < innumvertices)
        {
-               maxvertexupdate = numverts;
+               maxvertexupdate = innumvertices;
                if (vertexupdate)
                        Mem_Free(vertexupdate);
+               if (vertexremap)
+                       Mem_Free(vertexremap);
                vertexupdate = Mem_Alloc(r_shadow_mempool, maxvertexupdate * sizeof(int));
+               vertexremap = Mem_Alloc(r_shadow_mempool, maxvertexupdate * sizeof(int));
+               vertexupdatenum = 0;
        }
        vertexupdatenum++;
-
-       // check each frontface for bordering backfaces,
-       // and cast shadow polygons from those edges,
-       // also create front and back caps for shadow volume
-       tris = numfacing * 2;
-       // output front caps
-       for (i = 0;i < numfacing;i++)
+       if (vertexupdatenum == 0)
        {
-               e = elements + facinglist[i] * 3;
-               out[0] = e[0];
-               out[1] = e[1];
-               out[2] = e[2];
-               out += 3;
+               vertexupdatenum = 1;
+               memset(vertexupdate, 0, maxvertexupdate * sizeof(int));
+               memset(vertexremap, 0, maxvertexupdate * sizeof(int));
        }
-       // output back caps
-       for (i = 0;i < numfacing;i++)
+
+       for (i = 0;i < numshadowmarktris;i++)
+               shadowmark[shadowmarktris[i]] = shadowmarkcount;
+
+       for (i = 0;i < numshadowmarktris;i++)
        {
-               e = elements + facinglist[i] * 3;
-               // generate vertices if needed
+               element = inelement3i + shadowmarktris[i] * 3;
+               // make sure the vertices are created
                for (j = 0;j < 3;j++)
                {
-                       if (vertexupdate[e[j]] != vertexupdatenum)
+                       if (vertexupdate[element[j]] != vertexupdatenum)
                        {
-                               vertexupdate[e[j]] = vertexupdatenum;
-                               vin = vertices + e[j] * 3;
-                               vout = vin + vertexpointeradjust;
-                               vout[0] = relativelightorigin[0] + projectdistance * (vin[0] - relativelightorigin[0]);
-                               vout[1] = relativelightorigin[1] + projectdistance * (vin[1] - relativelightorigin[1]);
-                               vout[2] = relativelightorigin[2] + projectdistance * (vin[2] - relativelightorigin[2]);
+                               float ratio, direction[3];
+                               vertexupdate[element[j]] = vertexupdatenum;
+                               vertexremap[element[j]] = outvertices;
+                               vertex = invertex3f + element[j] * 3;
+                               // project one copy of the vertex to the sphere radius of the light
+                               // (FIXME: would projecting it to the light box be better?)
+                               VectorSubtract(vertex, projectorigin, direction);
+                               ratio = projectdistance / VectorLength(direction);
+                               VectorCopy(vertex, outvertex3f);
+                               VectorMA(projectorigin, ratio, direction, (outvertex3f + 3));
+                               outvertex3f += 6;
+                               outvertices += 2;
                        }
                }
-               out[0] = e[2] + numverts;
-               out[1] = e[1] + numverts;
-               out[2] = e[0] + numverts;
-               out += 3;
        }
-       // output sides around frontfaces
-       for (i = 0;i < numfacing;i++)
+
+       for (i = 0;i < numshadowmarktris;i++)
        {
-               n = neighbors + facinglist[i] * 3;
-               // check the edges
-               if (n[0] < 0 || !facing[n[0]])
+               int remappedelement[3];
+               int markindex;
+               const int *neighbortriangle;
+
+               markindex = shadowmarktris[i] * 3;
+               element = inelement3i + markindex;
+               neighbortriangle = inneighbor3i + markindex;
+               // output the front and back triangles
+               outelement3i[0] = vertexremap[element[0]];
+               outelement3i[1] = vertexremap[element[1]];
+               outelement3i[2] = vertexremap[element[2]];
+               outelement3i[3] = vertexremap[element[2]] + 1;
+               outelement3i[4] = vertexremap[element[1]] + 1;
+               outelement3i[5] = vertexremap[element[0]] + 1;
+
+               outelement3i += 6;
+               outtriangles += 2;
+               // output the sides (facing outward from this triangle)
+               if (shadowmark[neighbortriangle[0]] != shadowmarkcount)
                {
-                       e = elements + facinglist[i] * 3;
-                       out[0] = e[1];
-                       out[1] = e[0];
-                       out[2] = e[0] + numverts;
-                       out[3] = e[1];
-                       out[4] = e[0] + numverts;
-                       out[5] = e[1] + numverts;
-                       out += 6;
-                       tris += 2;
+                       remappedelement[0] = vertexremap[element[0]];
+                       remappedelement[1] = vertexremap[element[1]];
+                       outelement3i[0] = remappedelement[1];
+                       outelement3i[1] = remappedelement[0];
+                       outelement3i[2] = remappedelement[0] + 1;
+                       outelement3i[3] = remappedelement[1];
+                       outelement3i[4] = remappedelement[0] + 1;
+                       outelement3i[5] = remappedelement[1] + 1;
+
+                       outelement3i += 6;
+                       outtriangles += 2;
                }
-               if (n[1] < 0 || !facing[n[1]])
+               if (shadowmark[neighbortriangle[1]] != shadowmarkcount)
                {
-                       e = elements + facinglist[i] * 3;
-                       out[0] = e[2];
-                       out[1] = e[1];
-                       out[2] = e[1] + numverts;
-                       out[3] = e[2];
-                       out[4] = e[1] + numverts;
-                       out[5] = e[2] + numverts;
-                       out += 6;
-                       tris += 2;
+                       remappedelement[1] = vertexremap[element[1]];
+                       remappedelement[2] = vertexremap[element[2]];
+                       outelement3i[0] = remappedelement[2];
+                       outelement3i[1] = remappedelement[1];
+                       outelement3i[2] = remappedelement[1] + 1;
+                       outelement3i[3] = remappedelement[2];
+                       outelement3i[4] = remappedelement[1] + 1;
+                       outelement3i[5] = remappedelement[2] + 1;
+
+                       outelement3i += 6;
+                       outtriangles += 2;
                }
-               if (n[2] < 0 || !facing[n[2]])
+               if (shadowmark[neighbortriangle[2]] != shadowmarkcount)
                {
-                       e = elements + facinglist[i] * 3;
-                       out[0] = e[0];
-                       out[1] = e[2];
-                       out[2] = e[2] + numverts;
-                       out[3] = e[0];
-                       out[4] = e[2] + numverts;
-                       out[5] = e[0] + numverts;
-                       out += 6;
-                       tris += 2;
+                       remappedelement[0] = vertexremap[element[0]];
+                       remappedelement[2] = vertexremap[element[2]];
+                       outelement3i[0] = remappedelement[0];
+                       outelement3i[1] = remappedelement[2];
+                       outelement3i[2] = remappedelement[2] + 1;
+                       outelement3i[3] = remappedelement[0];
+                       outelement3i[4] = remappedelement[2] + 1;
+                       outelement3i[5] = remappedelement[0] + 1;
+
+                       outelement3i += 6;
+                       outtriangles += 2;
                }
        }
-       return tris;
+       if (outnumvertices)
+               *outnumvertices = outvertices;
+       return outtriangles;
 }
 
-void R_Shadow_ResizeTriangleFacingLight(int numtris)
+void R_Shadow_VolumeFromList(int numverts, int numtris, const float *invertex3f, const int *elements, const int *neighbors, const vec3_t projectorigin, float projectdistance, int nummarktris, const int *marktris)
 {
-       // make sure trianglefacinglight is big enough for this volume
-       // ameks ru ertaignelaficgnilhg tsib gie ongu hof rhtsiv lomu e
-       // m4k3 5ur3 7r14ng13f4c1n5115h7 15 b15 3n0u5h f0r 7h15 v01um3
-       if (maxtrianglefacinglight < numtris)
+       int tris, outverts;
+       if (projectdistance < 0.1)
        {
-               maxtrianglefacinglight = numtris;
-               if (trianglefacinglight)
-                       Mem_Free(trianglefacinglight);
-               if (trianglefacinglightlist)
-                       Mem_Free(trianglefacinglightlist);
-               trianglefacinglight = Mem_Alloc(r_shadow_mempool, maxtrianglefacinglight);
-               trianglefacinglightlist = Mem_Alloc(r_shadow_mempool, sizeof(int) * maxtrianglefacinglight);
+               Con_Printf("R_Shadow_Volume: projectdistance %f\n");
+               return;
        }
+       if (!numverts || !nummarktris)
+               return;
+       // make sure shadowelements is big enough for this volume
+       if (maxshadowelements < nummarktris * 24)
+               R_Shadow_ResizeShadowElements((nummarktris + 256) * 24);
+       tris = R_Shadow_ConstructShadowVolume(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, varray_vertex3f2, projectorigin, projectdistance, nummarktris, marktris);
+       R_Shadow_RenderVolume(outverts, tris, varray_vertex3f2, shadowelements);
 }
 
-int *R_Shadow_ResizeShadowElements(int numtris)
+void R_Shadow_MarkVolumeFromBox(int firsttriangle, int numtris, const float *invertex3f, const int *elements, const vec3_t projectorigin, const vec3_t lightmins, const vec3_t lightmaxs, const vec3_t surfacemins, const vec3_t surfacemaxs)
 {
-       // make sure shadowelements is big enough for this volume
-       if (maxshadowelements < numtris * 24)
+       int t, tend;
+       const int *e;
+       const float *v[3];
+       if (!BoxesOverlap(lightmins, lightmaxs, surfacemins, surfacemaxs))
+               return;
+       tend = firsttriangle + numtris;
+       if (surfacemins[0] >= lightmins[0] && surfacemaxs[0] <= lightmaxs[0]
+        && surfacemins[1] >= lightmins[1] && surfacemaxs[1] <= lightmaxs[1]
+        && surfacemins[2] >= lightmins[2] && surfacemaxs[2] <= lightmaxs[2])
        {
-               maxshadowelements = numtris * 24;
-               if (shadowelements)
-                       Mem_Free(shadowelements);
-               shadowelements = Mem_Alloc(r_shadow_mempool, maxshadowelements * sizeof(int));
+               // surface box entirely inside light box, no box cull
+               for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
+                       if (PointInfrontOfTriangle(projectorigin, invertex3f + e[0] * 3, invertex3f + e[1] * 3, invertex3f + e[2] * 3))
+                               shadowmarklist[numshadowmark++] = t;
        }
-       return shadowelements;
-}
-
-float *R_Shadow_VertexBuffer(int numvertices)
-{
-       if (maxshadowvertices < numvertices)
+       else
        {
-               maxshadowvertices = numvertices;
-               if (shadowvertex3f)
-                       Mem_Free(shadowvertex3f);
-               shadowvertex3f = Mem_Alloc(r_shadow_mempool, maxshadowvertices * sizeof(float[3]));
+               // surface box not entirely inside light box, cull each triangle
+               for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
+               {
+                       v[0] = invertex3f + e[0] * 3;
+                       v[1] = invertex3f + e[1] * 3;
+                       v[2] = invertex3f + e[2] * 3;
+                       if (PointInfrontOfTriangle(projectorigin, v[0], v[1], v[2])
+                        && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0]))
+                        && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0]))
+                        && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1]))
+                        && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1]))
+                        && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2]))
+                        && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
+                               shadowmarklist[numshadowmark++] = t;
+               }
        }
-       return shadowvertex3f;
 }
 
-void R_Shadow_Volume(int numverts, int numtris, int *elements, int *neighbors, vec3_t relativelightorigin, float lightradius, float projectdistance)
+void R_Shadow_RenderVolume(int numvertices, int numtriangles, const float *vertex3f, const int *element3i)
 {
-       int tris;
-       if (projectdistance < 0.1)
+       rmeshstate_t m;
+       if (r_shadow_compilingrtlight)
        {
-               Con_Printf("R_Shadow_Volume: projectdistance %f\n");
+               // if we're compiling an rtlight, capture the mesh
+               Mod_ShadowMesh_AddMesh(r_shadow_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, NULL, NULL, NULL, vertex3f, NULL, NULL, NULL, NULL, numtriangles, element3i);
                return;
        }
-       if (!numverts)
-               return;
-// terminology:
-//
-// frontface:
-// a triangle facing the light source
-//
-// backface:
-// a triangle not facing the light source
-//
-// shadow volume:
-// an extrusion of the frontfaces, beginning at the original geometry and
-// ending further from the light source than the original geometry
-// (presumably at least as far as the light's radius, if the light has a
-// radius at all), capped at both front and back to avoid any problems
-//
-// description:
-// draws the shadow volumes of the model.
-// requirements:
-// vertex locations must already be in varray_vertex3f before use.
-// varray_vertex3f must have capacity for numverts * 2.
-
-       // make sure trianglefacinglight is big enough for this volume
-       if (maxtrianglefacinglight < numtris)
-               R_Shadow_ResizeTriangleFacingLight(numtris);
-
-       // make sure shadowelements is big enough for this volume
-       if (maxshadowelements < numtris * 24)
-               R_Shadow_ResizeShadowElements(numtris);
-
-       // check which triangles are facing the light
-       tris = R_Shadow_MakeTriangleShadowFlags_Vertex3f(elements, varray_vertex3f, numtris, trianglefacinglight, trianglefacinglightlist, relativelightorigin);
-       if (!tris)
-               return;
-
-       // by clever use of elements we can construct the whole shadow from
-       // the unprojected vertices and the projected vertices
-
-       // output triangle elements and vertices
-       tris = R_Shadow_BuildShadowVolume(elements, neighbors, numverts, trianglefacinglight, trianglefacinglightlist, tris, shadowelements, varray_vertex3f, relativelightorigin, projectdistance);
-       if (!tris)
-               return;
-
-       if (r_shadowstage == SHADOWSTAGE_STENCIL)
+       memset(&m, 0, sizeof(m));
+       m.pointer_vertex = vertex3f;
+       R_Mesh_State(&m);
+       GL_LockArrays(0, numvertices);
+       if (r_shadowstage == R_SHADOWSTAGE_STENCIL)
        {
-               // increment stencil if backface is behind depthbuffer
+               // decrement stencil if backface is behind depthbuffer
                qglCullFace(GL_BACK); // quake is backwards, this culls front faces
-               qglStencilOp(GL_KEEP, GL_INCR, GL_KEEP);
-               R_Mesh_Draw(numverts * 2, tris, shadowelements);
+               qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);
+               R_Mesh_Draw(0, numvertices, numtriangles, element3i);
                c_rt_shadowmeshes++;
-               c_rt_shadowtris += numtris;
-               // decrement stencil if frontface is behind depthbuffer
+               c_rt_shadowtris += numtriangles;
+               // increment stencil if frontface is behind depthbuffer
                qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
-               qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);
-       }
-       R_Mesh_Draw(numverts * 2, tris, shadowelements);
-       c_rt_shadowmeshes++;
-       c_rt_shadowtris += numtris;
-}
-
-void R_Shadow_RenderShadowMeshVolume(shadowmesh_t *firstmesh)
-{
-       shadowmesh_t *mesh;
-       if (r_shadowstage == SHADOWSTAGE_STENCIL)
-       {
-               // increment stencil if backface is behind depthbuffer
-               qglCullFace(GL_BACK); // quake is backwards, this culls front faces
                qglStencilOp(GL_KEEP, GL_INCR, GL_KEEP);
-               for (mesh = firstmesh;mesh;mesh = mesh->next)
-               {
-                       R_Mesh_GetSpace(mesh->numverts);
-                       R_Mesh_CopyVertex3f(mesh->vertex3f, mesh->numverts);
-                       R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
-                       c_rtcached_shadowmeshes++;
-                       c_rtcached_shadowtris += mesh->numtriangles;
-               }
-               // decrement stencil if frontface is behind depthbuffer
-               qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
-               qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);
-       }
-       for (mesh = firstmesh;mesh;mesh = mesh->next)
-       {
-               R_Mesh_GetSpace(mesh->numverts);
-               R_Mesh_CopyVertex3f(mesh->vertex3f, mesh->numverts);
-               R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->element3i);
-               c_rtcached_shadowmeshes++;
-               c_rtcached_shadowtris += mesh->numtriangles;
        }
+       R_Mesh_Draw(0, numvertices, numtriangles, element3i);
+       c_rt_shadowmeshes++;
+       c_rt_shadowtris += numtriangles;
+       GL_LockArrays(0, 0);
 }
 
-float r_shadow_attenpower, r_shadow_attenscale;
 static void R_Shadow_MakeTextures(void)
 {
-       int x, y, z, d, side;
-       float v[3], s, t, intensity;
+       int x, y, z, d;
+       float v[3], intensity;
        qbyte *data;
        R_FreeTexturePool(&r_shadow_texturepool);
        r_shadow_texturepool = R_AllocTexturePool();
        r_shadow_attenpower = r_shadow_lightattenuationpower.value;
        r_shadow_attenscale = r_shadow_lightattenuationscale.value;
-#define NORMSIZE 64
 #define ATTEN2DSIZE 64
 #define ATTEN3DSIZE 32
-       data = Mem_Alloc(tempmempool, max(6*NORMSIZE*NORMSIZE*4, max(ATTEN3DSIZE*ATTEN3DSIZE*ATTEN3DSIZE*4, ATTEN2DSIZE*ATTEN2DSIZE*4)));
-       data[0] = 128;
-       data[1] = 128;
-       data[2] = 255;
-       data[3] = 255;
-       r_shadow_blankbumptexture = R_LoadTexture2D(r_shadow_texturepool, "blankbump", 1, 1, data, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
-       data[0] = 255;
-       data[1] = 255;
-       data[2] = 255;
-       data[3] = 255;
-       r_shadow_blankglosstexture = R_LoadTexture2D(r_shadow_texturepool, "blankgloss", 1, 1, data, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
-       data[0] = 255;
-       data[1] = 255;
-       data[2] = 255;
-       data[3] = 255;
-       r_shadow_blankwhitetexture = R_LoadTexture2D(r_shadow_texturepool, "blankwhite", 1, 1, data, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
-       if (gl_texturecubemap)
-       {
-               for (side = 0;side < 6;side++)
-               {
-                       for (y = 0;y < NORMSIZE;y++)
-                       {
-                               for (x = 0;x < NORMSIZE;x++)
-                               {
-                                       s = (x + 0.5f) * (2.0f / NORMSIZE) - 1.0f;
-                                       t = (y + 0.5f) * (2.0f / NORMSIZE) - 1.0f;
-                                       switch(side)
-                                       {
-                                       case 0:
-                                               v[0] = 1;
-                                               v[1] = -t;
-                                               v[2] = -s;
-                                               break;
-                                       case 1:
-                                               v[0] = -1;
-                                               v[1] = -t;
-                                               v[2] = s;
-                                               break;
-                                       case 2:
-                                               v[0] = s;
-                                               v[1] = 1;
-                                               v[2] = t;
-                                               break;
-                                       case 3:
-                                               v[0] = s;
-                                               v[1] = -1;
-                                               v[2] = -t;
-                                               break;
-                                       case 4:
-                                               v[0] = s;
-                                               v[1] = -t;
-                                               v[2] = 1;
-                                               break;
-                                       case 5:
-                                               v[0] = -s;
-                                               v[1] = -t;
-                                               v[2] = -1;
-                                               break;
-                                       }
-                                       intensity = 127.0f / sqrt(DotProduct(v, v));
-                                       data[((side*NORMSIZE+y)*NORMSIZE+x)*4+0] = 128.0f + intensity * v[0];
-                                       data[((side*NORMSIZE+y)*NORMSIZE+x)*4+1] = 128.0f + intensity * v[1];
-                                       data[((side*NORMSIZE+y)*NORMSIZE+x)*4+2] = 128.0f + intensity * v[2];
-                                       data[((side*NORMSIZE+y)*NORMSIZE+x)*4+3] = 255;
-                               }
-                       }
-               }
-               r_shadow_normalcubetexture = R_LoadTextureCubeMap(r_shadow_texturepool, "normalcube", NORMSIZE, data, TEXTYPE_RGBA, TEXF_PRECACHE | TEXF_CLAMP, NULL);
-       }
-       else
-               r_shadow_normalcubetexture = NULL;
+       data = Mem_Alloc(tempmempool, max(ATTEN3DSIZE*ATTEN3DSIZE*ATTEN3DSIZE*4, ATTEN2DSIZE*ATTEN2DSIZE*4));
        for (y = 0;y < ATTEN2DSIZE;y++)
        {
                for (x = 0;x < ATTEN2DSIZE;x++)
@@ -523,14 +1046,43 @@ static void R_Shadow_MakeTextures(void)
        Mem_Free(data);
 }
 
+void R_Shadow_ValidateCvars(void)
+{
+       if (r_shadow_texture3d.integer && !gl_texture3d)
+               Cvar_SetValueQuick(&r_shadow_texture3d, 0);
+       if (gl_ext_stenciltwoside.integer && !gl_support_stenciltwoside)
+               Cvar_SetValueQuick(&gl_ext_stenciltwoside, 0);
+}
+
+// light currently being rendered
+static rtlight_t *r_shadow_rtlight;
+// light filter cubemap being used by the light
+static rtexture_t *r_shadow_lightcubemap;
+
+// this is the location of the eye in entity space
+static vec3_t r_shadow_entityeyeorigin;
+// this is the location of the light in entity space
+static vec3_t r_shadow_entitylightorigin;
+// this transforms entity coordinates to light filter cubemap coordinates
+// (also often used for other purposes)
+static matrix4x4_t r_shadow_entitytolight;
+// based on entitytolight this transforms -1 to +1 to 0 to 1 for purposes
+// of attenuation texturing in full 3D (Z result often ignored)
+static matrix4x4_t r_shadow_entitytoattenuationxyz;
+// this transforms only the Z to S, and T is always 0.5
+static matrix4x4_t r_shadow_entitytoattenuationz;
+// rtlight->color * r_dlightstylevalue[rtlight->style] / 256 * r_shadow_lightintensityscale.value * ent->colormod * ent->alpha
+static vec3_t r_shadow_entitylightcolor;
+
+static int r_shadow_lightpermutation;
+static int r_shadow_lightprog;
+
 void R_Shadow_Stage_Begin(void)
 {
        rmeshstate_t m;
 
-       if (r_shadow_texture3d.integer && !gl_texture3d)
-               Cvar_SetValueQuick(&r_shadow_texture3d, 0);
+       R_Shadow_ValidateCvars();
 
-       //cl.worldmodel->numlights = min(cl.worldmodel->numlights, 1);
        if (!r_shadow_attenuation2dtexture
         || (!r_shadow_attenuation3dtexture && r_shadow_texture3d.integer)
         || r_shadow_lightattenuationpower.value != r_shadow_attenpower
@@ -538,460 +1090,337 @@ void R_Shadow_Stage_Begin(void)
                R_Shadow_MakeTextures();
 
        memset(&m, 0, sizeof(m));
-       m.blendfunc1 = GL_ONE;
-       m.blendfunc2 = GL_ZERO;
+       GL_BlendFunc(GL_ONE, GL_ZERO);
+       GL_DepthMask(false);
+       GL_DepthTest(true);
        R_Mesh_State(&m);
        GL_Color(0, 0, 0, 1);
-       r_shadowstage = SHADOWSTAGE_NONE;
+       qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
+       qglEnable(GL_CULL_FACE);
+       GL_Scissor(r_view_x, r_view_y, r_view_width, r_view_height);
+       r_shadowstage = R_SHADOWSTAGE_NONE;
+}
 
-       c_rt_lights = c_rt_clears = c_rt_scissored = 0;
-       c_rt_shadowmeshes = c_rt_shadowtris = c_rt_lightmeshes = c_rt_lighttris = 0;
-       c_rtcached_shadowmeshes = c_rtcached_shadowtris = 0;
+void R_Shadow_Stage_ActiveLight(rtlight_t *rtlight)
+{
+       r_shadow_rtlight = rtlight;
 }
 
-void R_Shadow_LoadWorldLightsIfNeeded(void)
+void R_Shadow_Stage_Reset(void)
 {
-       if (r_shadow_reloadlights && cl.worldmodel)
+       rmeshstate_t m;
+       if (gl_support_stenciltwoside)
+               qglDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);
+       if (r_shadowstage == R_SHADOWSTAGE_LIGHT_GLSL)
        {
-               R_Shadow_ClearWorldLights();
-               r_shadow_reloadlights = false;
-               R_Shadow_LoadWorldLights();
-               if (r_shadow_worldlightchain == NULL)
-               {
-                       R_Shadow_LoadLightsFile();
-                       if (r_shadow_worldlightchain == NULL)
-                               R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite();
-               }
+               qglUseProgramObjectARB(0);
+               // HACK HACK HACK: work around for stupid NVIDIA bug that causes GL_OUT_OF_MEMORY and/or software rendering in 6xxx drivers
+               qglBegin(GL_TRIANGLES);
+               qglEnd();
+               CHECKGLERROR
        }
+       memset(&m, 0, sizeof(m));
+       R_Mesh_State(&m);
 }
 
-void R_Shadow_Stage_ShadowVolumes(void)
+void R_Shadow_Stage_StencilShadowVolumes(void)
 {
-       rmeshstate_t m;
-       memset(&m, 0, sizeof(m));
-       R_Mesh_TextureState(&m);
+       R_Shadow_Stage_Reset();
        GL_Color(1, 1, 1, 1);
-       qglColorMask(0, 0, 0, 0);
-       qglDisable(GL_BLEND);
-       qglDepthMask(0);
+       GL_ColorMask(0, 0, 0, 0);
+       GL_BlendFunc(GL_ONE, GL_ZERO);
+       GL_DepthMask(false);
+       GL_DepthTest(true);
+       qglPolygonOffset(r_shadow_shadow_polygonfactor.value, r_shadow_shadow_polygonoffset.value);
+       //if (r_shadow_shadow_polygonoffset.value != 0)
+       //{
+       //      qglPolygonOffset(r_shadow_shadow_polygonfactor.value, r_shadow_shadow_polygonoffset.value);
+       //      qglEnable(GL_POLYGON_OFFSET_FILL);
+       //}
+       //else
+       //      qglDisable(GL_POLYGON_OFFSET_FILL);
        qglDepthFunc(GL_LESS);
+       qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
        qglEnable(GL_STENCIL_TEST);
-       qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
-       qglStencilFunc(GL_ALWAYS, 128, 0xFF);
-       qglEnable(GL_CULL_FACE);
-       qglEnable(GL_DEPTH_TEST);
-       r_shadowstage = SHADOWSTAGE_STENCIL;
-       qglClear(GL_STENCIL_BUFFER_BIT);
-       c_rt_clears++;
-       // LordHavoc note: many shadow volumes reside entirely inside the world
-       // (that is to say they are entirely bounded by their lit surfaces),
-       // which can be optimized by handling things as an inverted light volume,
-       // with the shadow boundaries of the world being simulated by an altered
-       // (129) bias to stencil clearing on such lights
-       // FIXME: generate inverted light volumes for use as shadow volumes and
-       // optimize for them as noted above
-}
+       qglStencilFunc(GL_ALWAYS, 128, ~0);
+       if (gl_ext_stenciltwoside.integer)
+       {
+               r_shadowstage = R_SHADOWSTAGE_STENCILTWOSIDE;
+               qglDisable(GL_CULL_FACE);
+               qglEnable(GL_STENCIL_TEST_TWO_SIDE_EXT);
+               qglActiveStencilFaceEXT(GL_BACK); // quake is backwards, this is front faces
+               qglStencilMask(~0);
+               qglStencilOp(GL_KEEP, GL_INCR, GL_KEEP);
+               qglActiveStencilFaceEXT(GL_FRONT); // quake is backwards, this is back faces
+               qglStencilMask(~0);
+               qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);
+       }
+       else
+       {
+               r_shadowstage = R_SHADOWSTAGE_STENCIL;
+               qglEnable(GL_CULL_FACE);
+               qglStencilMask(~0);
+               // this is changed by every shadow render so its value here is unimportant
+               qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+       }
+       GL_Clear(GL_STENCIL_BUFFER_BIT);
+       c_rt_clears++;
+}
 
-void R_Shadow_Stage_LightWithoutShadows(void)
+void R_Shadow_Stage_Lighting(int stenciltest)
 {
        rmeshstate_t m;
-       memset(&m, 0, sizeof(m));
-       R_Mesh_TextureState(&m);
-       qglActiveTexture(GL_TEXTURE0_ARB);
-
-       qglEnable(GL_BLEND);
-       qglBlendFunc(GL_ONE, GL_ONE);
+       R_Shadow_Stage_Reset();
+       GL_BlendFunc(GL_ONE, GL_ONE);
+       GL_DepthMask(false);
+       GL_DepthTest(true);
+       qglPolygonOffset(0, 0);
+       //qglDisable(GL_POLYGON_OFFSET_FILL);
        GL_Color(1, 1, 1, 1);
-       qglColorMask(1, 1, 1, 1);
-       qglDepthMask(0);
+       GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
        qglDepthFunc(GL_EQUAL);
-       qglDisable(GL_STENCIL_TEST);
-       qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
-       qglStencilFunc(GL_EQUAL, 128, 0xFF);
+       qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
        qglEnable(GL_CULL_FACE);
-       qglEnable(GL_DEPTH_TEST);
-       r_shadowstage = SHADOWSTAGE_LIGHT;
-       c_rt_lights++;
+       if (r_shadowstage == R_SHADOWSTAGE_STENCIL || r_shadowstage == R_SHADOWSTAGE_STENCILTWOSIDE)
+               qglEnable(GL_STENCIL_TEST);
+       else
+               qglDisable(GL_STENCIL_TEST);
+       qglStencilMask(~0);
+       qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+       // only draw light where this geometry was already rendered AND the
+       // stencil is 128 (values other than this mean shadow)
+       qglStencilFunc(GL_EQUAL, 128, ~0);
+       if (r_shadow_glsl.integer && r_shadow_program_light[0])
+       {
+               r_shadowstage = R_SHADOWSTAGE_LIGHT_GLSL;
+               memset(&m, 0, sizeof(m));
+               m.pointer_vertex = varray_vertex3f;
+               m.pointer_texcoord[0] = varray_texcoord2f[0];
+               m.pointer_texcoord3f[1] = varray_svector3f;
+               m.pointer_texcoord3f[2] = varray_tvector3f;
+               m.pointer_texcoord3f[3] = varray_normal3f;
+               m.tex[0] = R_GetTexture(r_texture_blanknormalmap); // normal
+               m.tex[1] = R_GetTexture(r_texture_white); // diffuse
+               m.tex[2] = R_GetTexture(r_texture_white); // gloss
+               m.texcubemap[3] = R_GetTexture(r_shadow_lightcubemap); // light filter
+               // TODO: support fog (after renderer is converted to texture fog)
+               m.tex[4] = R_GetTexture(r_texture_white); // fog
+               //m.texmatrix[3] = r_shadow_entitytolight; // light filter matrix
+               R_Mesh_State(&m);
+               GL_BlendFunc(GL_ONE, GL_ONE);
+               GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 0);
+               CHECKGLERROR
+               r_shadow_lightpermutation = 0;
+               // only add a feature to the permutation if that permutation exists
+               // (otherwise it might end up not using a shader at all, which looks
+               // worse than using less features)
+               if (r_shadow_rtlight->specularscale && r_shadow_gloss.integer >= 1 && r_shadow_program_light[r_shadow_lightpermutation | SHADERPERMUTATION_SPECULAR])
+                       r_shadow_lightpermutation |= SHADERPERMUTATION_SPECULAR;
+               //if (fog && r_shadow_program_light[r_shadow_lightpermutation | SHADERPERMUTATION_FOG])
+               //      r_shadow_lightpermutation |= SHADERPERMUTATION_FOG;
+               if (r_shadow_lightcubemap != r_texture_whitecube && r_shadow_program_light[r_shadow_lightpermutation | SHADERPERMUTATION_CUBEFILTER])
+                       r_shadow_lightpermutation |= SHADERPERMUTATION_CUBEFILTER;
+               if (r_shadow_glsl_offsetmapping.integer && r_shadow_program_light[r_shadow_lightpermutation | SHADERPERMUTATION_OFFSETMAPPING])
+                       r_shadow_lightpermutation |= SHADERPERMUTATION_OFFSETMAPPING;
+               if (r_shadow_glsl_surfacenormalize.integer && r_shadow_program_light[r_shadow_lightpermutation | SHADERPERMUTATION_SURFACENORMALIZE])
+                       r_shadow_lightpermutation |= SHADERPERMUTATION_SURFACENORMALIZE;
+               if (r_shadow_glsl_geforcefxlowquality.integer && r_shadow_program_light[r_shadow_lightpermutation | SHADERPERMUTATION_GEFORCEFX])
+                       r_shadow_lightpermutation |= SHADERPERMUTATION_GEFORCEFX;
+               r_shadow_lightprog = r_shadow_program_light[r_shadow_lightpermutation];
+               qglUseProgramObjectARB(r_shadow_lightprog);CHECKGLERROR
+               // TODO: support fog (after renderer is converted to texture fog)
+               if (r_shadow_lightpermutation & SHADERPERMUTATION_FOG)
+               {
+                       qglUniform1fARB(qglGetUniformLocationARB(r_shadow_lightprog, "FogRangeRecip"), 0);CHECKGLERROR
+               }
+               qglUniform1fARB(qglGetUniformLocationARB(r_shadow_lightprog, "AmbientScale"), r_shadow_rtlight->ambientscale);CHECKGLERROR
+               qglUniform1fARB(qglGetUniformLocationARB(r_shadow_lightprog, "DiffuseScale"), r_shadow_rtlight->diffusescale);CHECKGLERROR
+               if (r_shadow_lightpermutation & SHADERPERMUTATION_SPECULAR)
+               {
+                       qglUniform1fARB(qglGetUniformLocationARB(r_shadow_lightprog, "SpecularPower"), 8);CHECKGLERROR
+                       qglUniform1fARB(qglGetUniformLocationARB(r_shadow_lightprog, "SpecularScale"), r_shadow_rtlight->specularscale);CHECKGLERROR
+               }
+               //qglUniform3fARB(qglGetUniformLocationARB(r_shadow_lightprog, "LightColor"), lightcolorbase[0], lightcolorbase[1], lightcolorbase[2]);CHECKGLERROR
+               //qglUniform3fARB(qglGetUniformLocationARB(r_shadow_lightprog, "LightPosition"), relativelightorigin[0], relativelightorigin[1], relativelightorigin[2]);CHECKGLERROR
+               //if (r_shadow_lightpermutation & (SHADERPERMUTATION_SPECULAR | SHADERPERMUTATION_FOG | SHADERPERMUTATION_OFFSETMAPPING))
+               //{
+               //      qglUniform3fARB(qglGetUniformLocationARB(r_shadow_lightprog, "EyePosition"), relativeeyeorigin[0], relativeeyeorigin[1], relativeeyeorigin[2]);CHECKGLERROR
+               //}
+               if (r_shadow_lightpermutation & SHADERPERMUTATION_OFFSETMAPPING)
+               {
+                       qglUniform1fARB(qglGetUniformLocationARB(r_shadow_lightprog, "OffsetMapping_Scale"), r_shadow_glsl_offsetmapping_scale.value);CHECKGLERROR
+                       qglUniform1fARB(qglGetUniformLocationARB(r_shadow_lightprog, "OffsetMapping_Bias"), r_shadow_glsl_offsetmapping_bias.value);CHECKGLERROR
+               }
+       }
+       else if (gl_dot3arb && gl_texturecubemap && r_textureunits.integer >= 2 && gl_combine.integer && gl_stencil)
+               r_shadowstage = R_SHADOWSTAGE_LIGHT_DOT3;
+       else
+               r_shadowstage = R_SHADOWSTAGE_LIGHT_VERTEX;
 }
 
-void R_Shadow_Stage_LightWithShadows(void)
+void R_Shadow_Stage_VisibleShadowVolumes(void)
 {
-       rmeshstate_t m;
-       memset(&m, 0, sizeof(m));
-       R_Mesh_TextureState(&m);
-       qglActiveTexture(GL_TEXTURE0_ARB);
+       R_Shadow_Stage_Reset();
+       GL_BlendFunc(GL_ONE, GL_ONE);
+       GL_DepthMask(false);
+       GL_DepthTest(r_shadow_visiblevolumes.integer < 2);
+       qglPolygonOffset(0, 0);
+       GL_Color(0.0, 0.0125, 0.1, 1);
+       GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
+       qglDepthFunc(GL_GEQUAL);
+       qglCullFace(GL_FRONT); // this culls back
+       qglDisable(GL_CULL_FACE);
+       qglDisable(GL_STENCIL_TEST);
+       r_shadowstage = R_SHADOWSTAGE_VISIBLEVOLUMES;
+}
 
-       qglEnable(GL_BLEND);
-       qglBlendFunc(GL_ONE, GL_ONE);
-       GL_Color(1, 1, 1, 1);
-       qglColorMask(1, 1, 1, 1);
-       qglDepthMask(0);
+void R_Shadow_Stage_VisibleLighting(int stenciltest)
+{
+       R_Shadow_Stage_Reset();
+       GL_BlendFunc(GL_ONE, GL_ONE);
+       GL_DepthMask(false);
+       GL_DepthTest(r_shadow_visiblelighting.integer < 2);
+       qglPolygonOffset(0, 0);
+       GL_Color(0.1, 0.0125, 0, 1);
+       GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
        qglDepthFunc(GL_EQUAL);
-       qglEnable(GL_STENCIL_TEST);
-       qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
-       // only draw light where this geometry was already rendered AND the
-       // stencil is 128 (values other than this mean shadow)
-       qglStencilFunc(GL_EQUAL, 128, 0xFF);
+       qglCullFace(GL_FRONT); // this culls back
        qglEnable(GL_CULL_FACE);
-       qglEnable(GL_DEPTH_TEST);
-       r_shadowstage = SHADOWSTAGE_LIGHT;
-       c_rt_lights++;
+       if (stenciltest)
+               qglEnable(GL_STENCIL_TEST);
+       else
+               qglDisable(GL_STENCIL_TEST);
+       r_shadowstage = R_SHADOWSTAGE_VISIBLELIGHTING;
 }
 
 void R_Shadow_Stage_End(void)
 {
-       rmeshstate_t m;
-       // attempt to restore state to what Mesh_State thinks it is
-       qglDisable(GL_BLEND);
-       qglBlendFunc(GL_ONE, GL_ZERO);
-       qglDepthMask(1);
-       // now restore the rest of the state to normal
+       R_Shadow_Stage_Reset();
+       R_Shadow_Stage_ActiveLight(NULL);
+       GL_BlendFunc(GL_ONE, GL_ZERO);
+       GL_DepthMask(true);
+       GL_DepthTest(true);
+       qglPolygonOffset(0, 0);
+       //qglDisable(GL_POLYGON_OFFSET_FILL);
        GL_Color(1, 1, 1, 1);
-       qglColorMask(1, 1, 1, 1);
-       qglDisable(GL_SCISSOR_TEST);
+       GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
+       GL_Scissor(r_view_x, r_view_y, r_view_width, r_view_height);
        qglDepthFunc(GL_LEQUAL);
+       qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
        qglDisable(GL_STENCIL_TEST);
        qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
-       qglStencilFunc(GL_ALWAYS, 128, 0xFF);
-       qglEnable(GL_CULL_FACE);
-       qglEnable(GL_DEPTH_TEST);
-       // force mesh state to reset by using various combinations of features
-       memset(&m, 0, sizeof(m));
-       m.blendfunc1 = GL_SRC_ALPHA;
-       m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
-       R_Mesh_State(&m);
-       m.blendfunc1 = GL_ONE;
-       m.blendfunc2 = GL_ZERO;
-       R_Mesh_State(&m);
-       r_shadowstage = SHADOWSTAGE_NONE;
+       if (gl_support_stenciltwoside)
+               qglDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);
+       qglStencilMask(~0);
+       qglStencilFunc(GL_ALWAYS, 128, ~0);
+       r_shadowstage = R_SHADOWSTAGE_NONE;
 }
 
-#if 0
-int R_Shadow_ScissorForBBoxAndSphere(const float *mins, const float *maxs, const float *origin, float radius)
+qboolean R_Shadow_ScissorForBBox(const float *mins, const float *maxs)
 {
        int i, ix1, iy1, ix2, iy2;
-       float x1, y1, x2, y2, x, y;
-       vec3_t smins, smaxs;
+       float x1, y1, x2, y2;
        vec4_t v, v2;
-       if (!r_shadow_scissor.integer)
-               return false;
-       // if view is inside the box, just say yes it's visible
-       if (r_origin[0] >= mins[0] && r_origin[0] <= maxs[0]
-        && r_origin[1] >= mins[1] && r_origin[1] <= maxs[1]
-        && r_origin[2] >= mins[2] && r_origin[2] <= maxs[2])
-       {
-               qglDisable(GL_SCISSOR_TEST);
-               return false;
-       }
-       VectorSubtract(r_origin, origin, v);
-       if (DotProduct(v, v) < radius * radius)
+       rmesh_t mesh;
+       mplane_t planes[11];
+       float vertex3f[256*3];
+
+       // if view is inside the light box, just say yes it's visible
+       if (BoxesOverlap(r_vieworigin, r_vieworigin, mins, maxs))
        {
-               qglDisable(GL_SCISSOR_TEST);
+               GL_Scissor(r_view_x, r_view_y, r_view_width, r_view_height);
                return false;
        }
-       // create viewspace bbox
-       for (i = 0;i < 8;i++)
-       {
-               v[0] = ((i & 1) ? mins[0] : maxs[0]) - r_origin[0];
-               v[1] = ((i & 2) ? mins[1] : maxs[1]) - r_origin[1];
-               v[2] = ((i & 4) ? mins[2] : maxs[2]) - r_origin[2];
-               v2[0] = DotProduct(v, vright);
-               v2[1] = DotProduct(v, vup);
-               v2[2] = DotProduct(v, vpn);
-               if (i)
-               {
-                       if (smins[0] > v2[0]) smins[0] = v2[0];
-                       if (smaxs[0] < v2[0]) smaxs[0] = v2[0];
-                       if (smins[1] > v2[1]) smins[1] = v2[1];
-                       if (smaxs[1] < v2[1]) smaxs[1] = v2[1];
-                       if (smins[2] > v2[2]) smins[2] = v2[2];
-                       if (smaxs[2] < v2[2]) smaxs[2] = v2[2];
-               }
-               else
-               {
-                       smins[0] = smaxs[0] = v2[0];
-                       smins[1] = smaxs[1] = v2[1];
-                       smins[2] = smaxs[2] = v2[2];
-               }
-       }
-       // now we have a bbox in viewspace
-       // clip it to the viewspace version of the sphere
-       v[0] = origin[0] - r_origin[0];
-       v[1] = origin[1] - r_origin[1];
-       v[2] = origin[2] - r_origin[2];
-       v2[0] = DotProduct(v, vright);
-       v2[1] = DotProduct(v, vup);
-       v2[2] = DotProduct(v, vpn);
-       if (smins[0] < v2[0] - radius) smins[0] = v2[0] - radius;
-       if (smaxs[0] < v2[0] - radius) smaxs[0] = v2[0] + radius;
-       if (smins[1] < v2[1] - radius) smins[1] = v2[1] - radius;
-       if (smaxs[1] < v2[1] - radius) smaxs[1] = v2[1] + radius;
-       if (smins[2] < v2[2] - radius) smins[2] = v2[2] - radius;
-       if (smaxs[2] < v2[2] - radius) smaxs[2] = v2[2] + radius;
-       // clip it to the view plane
-       if (smins[2] < 1)
-               smins[2] = 1;
-       // return true if that culled the box
-       if (smins[2] >= smaxs[2])
+
+       // create a temporary brush describing the area the light can affect in worldspace
+       VectorNegate(frustum[0].normal, planes[ 0].normal);planes[ 0].dist = -frustum[0].dist;
+       VectorNegate(frustum[1].normal, planes[ 1].normal);planes[ 1].dist = -frustum[1].dist;
+       VectorNegate(frustum[2].normal, planes[ 2].normal);planes[ 2].dist = -frustum[2].dist;
+       VectorNegate(frustum[3].normal, planes[ 3].normal);planes[ 3].dist = -frustum[3].dist;
+       VectorNegate(frustum[4].normal, planes[ 4].normal);planes[ 4].dist = -frustum[4].dist;
+       VectorSet   (planes[ 5].normal,  1, 0, 0);         planes[ 5].dist =  maxs[0];
+       VectorSet   (planes[ 6].normal, -1, 0, 0);         planes[ 6].dist = -mins[0];
+       VectorSet   (planes[ 7].normal, 0,  1, 0);         planes[ 7].dist =  maxs[1];
+       VectorSet   (planes[ 8].normal, 0, -1, 0);         planes[ 8].dist = -mins[1];
+       VectorSet   (planes[ 9].normal, 0, 0,  1);         planes[ 9].dist =  maxs[2];
+       VectorSet   (planes[10].normal, 0, 0, -1);         planes[10].dist = -mins[2];
+
+       // turn the brush into a mesh
+       memset(&mesh, 0, sizeof(rmesh_t));
+       mesh.maxvertices = 256;
+       mesh.vertex3f = vertex3f;
+       mesh.epsilon2 = (1.0f / (32.0f * 32.0f));
+       R_Mesh_AddBrushMeshFromPlanes(&mesh, 11, planes);
+
+       // if that mesh is empty, the light is not visible at all
+       if (!mesh.numvertices)
                return true;
-       // ok some of it is infront of the view, transform each corner back to
-       // worldspace and then to screenspace and make screen rect
-       // initialize these variables just to avoid compiler warnings
+
+       if (!r_shadow_scissor.integer)
+               return false;
+
+       // if that mesh is not empty, check what area of the screen it covers
        x1 = y1 = x2 = y2 = 0;
-       for (i = 0;i < 8;i++)
-       {
-               v2[0] = (i & 1) ? smins[0] : smaxs[0];
-               v2[1] = (i & 2) ? smins[1] : smaxs[1];
-               v2[2] = (i & 4) ? smins[2] : smaxs[2];
-               v[0] = v2[0] * vright[0] + v2[1] * vup[0] + v2[2] * vpn[0] + r_origin[0];
-               v[1] = v2[0] * vright[1] + v2[1] * vup[1] + v2[2] * vpn[1] + r_origin[1];
-               v[2] = v2[0] * vright[2] + v2[1] * vup[2] + v2[2] * vpn[2] + r_origin[2];
-               v[3] = 1.0f;
+       v[3] = 1.0f;
+       for (i = 0;i < mesh.numvertices;i++)
+       {
+               VectorCopy(mesh.vertex3f + i * 3, v);
                GL_TransformToScreen(v, v2);
                //Con_Printf("%.3f %.3f %.3f %.3f transformed to %.3f %.3f %.3f %.3f\n", v[0], v[1], v[2], v[3], v2[0], v2[1], v2[2], v2[3]);
-               x = v2[0];
-               y = v2[1];
                if (i)
                {
-                       if (x1 > x) x1 = x;
-                       if (x2 < x) x2 = x;
-                       if (y1 > y) y1 = y;
-                       if (y2 < y) y2 = y;
+                       if (x1 > v2[0]) x1 = v2[0];
+                       if (x2 < v2[0]) x2 = v2[0];
+                       if (y1 > v2[1]) y1 = v2[1];
+                       if (y2 < v2[1]) y2 = v2[1];
                }
                else
                {
-                       x1 = x2 = x;
-                       y1 = y2 = y;
+                       x1 = x2 = v2[0];
+                       y1 = y2 = v2[1];
                }
        }
-       /*
-       // this code doesn't handle boxes with any points behind view properly
-       x1 = 1000;x2 = -1000;
-       y1 = 1000;y2 = -1000;
-       for (i = 0;i < 8;i++)
-       {
-               v[0] = (i & 1) ? mins[0] : maxs[0];
-               v[1] = (i & 2) ? mins[1] : maxs[1];
-               v[2] = (i & 4) ? mins[2] : maxs[2];
-               v[3] = 1.0f;
-               GL_TransformToScreen(v, v2);
-               //Con_Printf("%.3f %.3f %.3f %.3f transformed to %.3f %.3f %.3f %.3f\n", v[0], v[1], v[2], v[3], v2[0], v2[1], v2[2], v2[3]);
-               if (v2[2] > 0)
-               {
-                       x = v2[0];
-                       y = v2[1];
 
-                       if (x1 > x) x1 = x;
-                       if (x2 < x) x2 = x;
-                       if (y1 > y) y1 = y;
-                       if (y2 < y) y2 = y;
-               }
-       }
-       */
+       // now convert the scissor rectangle to integer screen coordinates
        ix1 = x1 - 1.0f;
        iy1 = y1 - 1.0f;
        ix2 = x2 + 1.0f;
        iy2 = y2 + 1.0f;
        //Con_Printf("%f %f %f %f\n", x1, y1, x2, y2);
-       if (ix1 < r_refdef.x) ix1 = r_refdef.x;
-       if (iy1 < r_refdef.y) iy1 = r_refdef.y;
-       if (ix2 > r_refdef.x + r_refdef.width) ix2 = r_refdef.x + r_refdef.width;
-       if (iy2 > r_refdef.y + r_refdef.height) iy2 = r_refdef.y + r_refdef.height;
-       if (ix2 <= ix1 || iy2 <= iy1)
-               return true;
-       // set up the scissor rectangle
-       qglScissor(ix1, iy1, ix2 - ix1, iy2 - iy1);
-       qglEnable(GL_SCISSOR_TEST);
-       c_rt_scissored++;
-       return false;
-}
-#endif
 
-int R_Shadow_ScissorForBBox(const float *mins, const float *maxs)
-{
-       int i, ix1, iy1, ix2, iy2;
-       float x1, y1, x2, y2, x, y, f;
-       vec3_t smins, smaxs;
-       vec4_t v, v2;
-       if (!r_shadow_scissor.integer)
-               return false;
-       // if view is inside the box, just say yes it's visible
-       if (BoxesOverlap(r_origin, r_origin, mins, maxs))
-       {
-               qglDisable(GL_SCISSOR_TEST);
-               return false;
-       }
-       for (i = 0;i < 3;i++)
-       {
-               if (vpn[i] >= 0)
-               {
-                       v[i] = mins[i];
-                       v2[i] = maxs[i];
-               }
-               else
-               {
-                       v[i] = maxs[i];
-                       v2[i] = mins[i];
-               }
-       }
-       f = DotProduct(vpn, r_origin) + 1;
-       if (DotProduct(vpn, v2) <= f)
-       {
-               // entirely behind nearclip plane
-               qglDisable(GL_SCISSOR_TEST);
-               return false;
-       }
-       if (DotProduct(vpn, v) >= f)
-       {
-               // entirely infront of nearclip plane
-               x1 = y1 = x2 = y2 = 0;
-               for (i = 0;i < 8;i++)
-               {
-                       v[0] = (i & 1) ? mins[0] : maxs[0];
-                       v[1] = (i & 2) ? mins[1] : maxs[1];
-                       v[2] = (i & 4) ? mins[2] : maxs[2];
-                       v[3] = 1.0f;
-                       GL_TransformToScreen(v, v2);
-                       //Con_Printf("%.3f %.3f %.3f %.3f transformed to %.3f %.3f %.3f %.3f\n", v[0], v[1], v[2], v[3], v2[0], v2[1], v2[2], v2[3]);
-                       x = v2[0];
-                       y = v2[1];
-                       if (i)
-                       {
-                               if (x1 > x) x1 = x;
-                               if (x2 < x) x2 = x;
-                               if (y1 > y) y1 = y;
-                               if (y2 < y) y2 = y;
-                       }
-                       else
-                       {
-                               x1 = x2 = x;
-                               y1 = y2 = y;
-                       }
-               }
-       }
-       else
-       {
-               // clipped by nearclip plane
-               // this is nasty and crude...
-               // create viewspace bbox
-               for (i = 0;i < 8;i++)
-               {
-                       v[0] = ((i & 1) ? mins[0] : maxs[0]) - r_origin[0];
-                       v[1] = ((i & 2) ? mins[1] : maxs[1]) - r_origin[1];
-                       v[2] = ((i & 4) ? mins[2] : maxs[2]) - r_origin[2];
-                       v2[0] = DotProduct(v, vright);
-                       v2[1] = DotProduct(v, vup);
-                       v2[2] = DotProduct(v, vpn);
-                       if (i)
-                       {
-                               if (smins[0] > v2[0]) smins[0] = v2[0];
-                               if (smaxs[0] < v2[0]) smaxs[0] = v2[0];
-                               if (smins[1] > v2[1]) smins[1] = v2[1];
-                               if (smaxs[1] < v2[1]) smaxs[1] = v2[1];
-                               if (smins[2] > v2[2]) smins[2] = v2[2];
-                               if (smaxs[2] < v2[2]) smaxs[2] = v2[2];
-                       }
-                       else
-                       {
-                               smins[0] = smaxs[0] = v2[0];
-                               smins[1] = smaxs[1] = v2[1];
-                               smins[2] = smaxs[2] = v2[2];
-                       }
-               }
-               // now we have a bbox in viewspace
-               // clip it to the view plane
-               if (smins[2] < 1)
-                       smins[2] = 1;
-               // return true if that culled the box
-               if (smins[2] >= smaxs[2])
-                       return true;
-               // ok some of it is infront of the view, transform each corner back to
-               // worldspace and then to screenspace and make screen rect
-               // initialize these variables just to avoid compiler warnings
-               x1 = y1 = x2 = y2 = 0;
-               for (i = 0;i < 8;i++)
-               {
-                       v2[0] = (i & 1) ? smins[0] : smaxs[0];
-                       v2[1] = (i & 2) ? smins[1] : smaxs[1];
-                       v2[2] = (i & 4) ? smins[2] : smaxs[2];
-                       v[0] = v2[0] * vright[0] + v2[1] * vup[0] + v2[2] * vpn[0] + r_origin[0];
-                       v[1] = v2[0] * vright[1] + v2[1] * vup[1] + v2[2] * vpn[1] + r_origin[1];
-                       v[2] = v2[0] * vright[2] + v2[1] * vup[2] + v2[2] * vpn[2] + r_origin[2];
-                       v[3] = 1.0f;
-                       GL_TransformToScreen(v, v2);
-                       //Con_Printf("%.3f %.3f %.3f %.3f transformed to %.3f %.3f %.3f %.3f\n", v[0], v[1], v[2], v[3], v2[0], v2[1], v2[2], v2[3]);
-                       x = v2[0];
-                       y = v2[1];
-                       if (i)
-                       {
-                               if (x1 > x) x1 = x;
-                               if (x2 < x) x2 = x;
-                               if (y1 > y) y1 = y;
-                               if (y2 < y) y2 = y;
-                       }
-                       else
-                       {
-                               x1 = x2 = x;
-                               y1 = y2 = y;
-                       }
-               }
-               /*
-               // this code doesn't handle boxes with any points behind view properly
-               x1 = 1000;x2 = -1000;
-               y1 = 1000;y2 = -1000;
-               for (i = 0;i < 8;i++)
-               {
-                       v[0] = (i & 1) ? mins[0] : maxs[0];
-                       v[1] = (i & 2) ? mins[1] : maxs[1];
-                       v[2] = (i & 4) ? mins[2] : maxs[2];
-                       v[3] = 1.0f;
-                       GL_TransformToScreen(v, v2);
-                       //Con_Printf("%.3f %.3f %.3f %.3f transformed to %.3f %.3f %.3f %.3f\n", v[0], v[1], v[2], v[3], v2[0], v2[1], v2[2], v2[3]);
-                       if (v2[2] > 0)
-                       {
-                               x = v2[0];
-                               y = v2[1];
+       // clamp it to the screen
+       if (ix1 < r_view_x) ix1 = r_view_x;
+       if (iy1 < r_view_y) iy1 = r_view_y;
+       if (ix2 > r_view_x + r_view_width) ix2 = r_view_x + r_view_width;
+       if (iy2 > r_view_y + r_view_height) iy2 = r_view_y + r_view_height;
 
-                               if (x1 > x) x1 = x;
-                               if (x2 < x) x2 = x;
-                               if (y1 > y) y1 = y;
-                               if (y2 < y) y2 = y;
-                       }
-               }
-               */
-       }
-       ix1 = x1 - 1.0f;
-       iy1 = y1 - 1.0f;
-       ix2 = x2 + 1.0f;
-       iy2 = y2 + 1.0f;
-       //Con_Printf("%f %f %f %f\n", x1, y1, x2, y2);
-       if (ix1 < r_refdef.x) ix1 = r_refdef.x;
-       if (iy1 < r_refdef.y) iy1 = r_refdef.y;
-       if (ix2 > r_refdef.x + r_refdef.width) ix2 = r_refdef.x + r_refdef.width;
-       if (iy2 > r_refdef.y + r_refdef.height) iy2 = r_refdef.y + r_refdef.height;
+       // if it is inside out, it's not visible
        if (ix2 <= ix1 || iy2 <= iy1)
                return true;
-       // set up the scissor rectangle
-       qglScissor(ix1, iy1, ix2 - ix1, iy2 - iy1);
-       qglEnable(GL_SCISSOR_TEST);
+
+       // the light area is visible, set up the scissor rectangle
+       GL_Scissor(ix1, vid.height - iy2, ix2 - ix1, iy2 - iy1);
+       //qglScissor(ix1, iy1, ix2 - ix1, iy2 - iy1);
+       //qglEnable(GL_SCISSOR_TEST);
        c_rt_scissored++;
        return false;
 }
 
-void R_Shadow_VertexLighting(int numverts, const float *vertex3f, const float *normal3f, const float *lightcolor, const matrix4x4_t *m)
+static void R_Shadow_VertexShadingWithXYZAttenuation(int numverts, const float *vertex3f, const float *normal3f, const float *lightcolor)
 {
        float *color4f = varray_color4f;
        float dist, dot, intensity, v[3], n[3];
        for (;numverts > 0;numverts--, vertex3f += 3, normal3f += 3, color4f += 4)
        {
-               Matrix4x4_Transform(m, vertex3f, v);
+               Matrix4x4_Transform(&r_shadow_entitytolight, vertex3f, v);
                if ((dist = DotProduct(v, v)) < 1)
                {
-                       Matrix4x4_Transform3x3(m, normal3f, n);
+                       Matrix4x4_Transform3x3(&r_shadow_entitytolight, normal3f, n);
                        if ((dot = DotProduct(n, v)) > 0)
                        {
                                dist = sqrt(dist);
-                               intensity = pow(1 - dist, r_shadow_attenpower) * r_shadow_attenscale * dot / sqrt(DotProduct(n,n));
+                               intensity = dot / sqrt(VectorLength2(v) * VectorLength2(n));
+                               intensity *= pow(1 - dist, r_shadow_attenpower) * r_shadow_attenscale;
                                VectorScale(lightcolor, intensity, color4f);
                                color4f[3] = 1;
                        }
@@ -1009,19 +1438,20 @@ void R_Shadow_VertexLighting(int numverts, const float *vertex3f, const float *n
        }
 }
 
-void R_Shadow_VertexLightingWithXYAttenuationTexture(int numverts, const float *vertex3f, const float *normal3f, const float *lightcolor, const matrix4x4_t *m)
+static void R_Shadow_VertexShadingWithZAttenuation(int numverts, const float *vertex3f, const float *normal3f, const float *lightcolor)
 {
        float *color4f = varray_color4f;
        float dist, dot, intensity, v[3], n[3];
        for (;numverts > 0;numverts--, vertex3f += 3, normal3f += 3, color4f += 4)
        {
-               Matrix4x4_Transform(m, vertex3f, v);
+               Matrix4x4_Transform(&r_shadow_entitytolight, vertex3f, v);
                if ((dist = fabs(v[2])) < 1)
                {
-                       Matrix4x4_Transform3x3(m, normal3f, n);
+                       Matrix4x4_Transform3x3(&r_shadow_entitytolight, normal3f, n);
                        if ((dot = DotProduct(n, v)) > 0)
                        {
-                               intensity = pow(1 - dist, r_shadow_attenpower) * r_shadow_attenscale * dot / sqrt(DotProduct(n,n));
+                               intensity = dot / sqrt(VectorLength2(v) * VectorLength2(n));
+                               intensity *= pow(1 - dist, r_shadow_attenpower) * r_shadow_attenscale;
                                VectorScale(lightcolor, intensity, color4f);
                                color4f[3] = 1;
                        }
@@ -1039,9 +1469,78 @@ void R_Shadow_VertexLightingWithXYAttenuationTexture(int numverts, const float *
        }
 }
 
-// FIXME: this should be done in a vertex program when possible
-// FIXME: if vertex program not available, this would really benefit from 3DNow! or SSE
-void R_Shadow_Transform_Vertex3f_TexCoord3f(float *tc3f, int numverts, const float *vertex3f, const matrix4x4_t *matrix)
+static void R_Shadow_VertexShading(int numverts, const float *vertex3f, const float *normal3f, const float *lightcolor)
+{
+       float *color4f = varray_color4f;
+       float dot, intensity, v[3], n[3];
+       for (;numverts > 0;numverts--, vertex3f += 3, normal3f += 3, color4f += 4)
+       {
+               Matrix4x4_Transform(&r_shadow_entitytolight, vertex3f, v);
+               Matrix4x4_Transform3x3(&r_shadow_entitytolight, normal3f, n);
+               if ((dot = DotProduct(n, v)) > 0)
+               {
+                       intensity = dot / sqrt(VectorLength2(v) * VectorLength2(n));
+                       VectorScale(lightcolor, intensity, color4f);
+                       color4f[3] = 1;
+               }
+               else
+               {
+                       VectorClear(color4f);
+                       color4f[3] = 1;
+               }
+       }
+}
+
+static void R_Shadow_VertexNoShadingWithXYZAttenuation(int numverts, const float *vertex3f, const float *lightcolor)
+{
+       float *color4f = varray_color4f;
+       float dist, intensity, v[3];
+       for (;numverts > 0;numverts--, vertex3f += 3, color4f += 4)
+       {
+               Matrix4x4_Transform(&r_shadow_entitytolight, vertex3f, v);
+               if ((dist = DotProduct(v, v)) < 1)
+               {
+                       dist = sqrt(dist);
+                       intensity = pow(1 - dist, r_shadow_attenpower) * r_shadow_attenscale;
+                       VectorScale(lightcolor, intensity, color4f);
+                       color4f[3] = 1;
+               }
+               else
+               {
+                       VectorClear(color4f);
+                       color4f[3] = 1;
+               }
+       }
+}
+
+static void R_Shadow_VertexNoShadingWithZAttenuation(int numverts, const float *vertex3f, const float *lightcolor)
+{
+       float *color4f = varray_color4f;
+       float dist, intensity, v[3];
+       for (;numverts > 0;numverts--, vertex3f += 3, color4f += 4)
+       {
+               Matrix4x4_Transform(&r_shadow_entitytolight, vertex3f, v);
+               if ((dist = fabs(v[2])) < 1)
+               {
+                       intensity = pow(1 - dist, r_shadow_attenpower) * r_shadow_attenscale;
+                       VectorScale(lightcolor, intensity, color4f);
+                       color4f[3] = 1;
+               }
+               else
+               {
+                       VectorClear(color4f);
+                       color4f[3] = 1;
+               }
+       }
+}
+
+// TODO: use glTexGen instead of feeding vertices to texcoordpointer?
+#define USETEXMATRIX
+
+#ifndef USETEXMATRIX
+// this should be done in a texture matrix or vertex program when possible, but here's code to do it manually
+// if hardware texcoord manipulation is not available (or not suitable, this would really benefit from 3DNow! or SSE
+static void R_Shadow_Transform_Vertex3f_TexCoord3f(float *tc3f, int numverts, const float *vertex3f, const matrix4x4_t *matrix)
 {
        do
        {
@@ -1054,7 +1553,7 @@ void R_Shadow_Transform_Vertex3f_TexCoord3f(float *tc3f, int numverts, const flo
        while (--numverts);
 }
 
-void R_Shadow_Transform_Vertex3f_TexCoord2f(float *tc2f, int numverts, const float *vertex3f, const matrix4x4_t *matrix)
+static void R_Shadow_Transform_Vertex3f_TexCoord2f(float *tc2f, int numverts, const float *vertex3f, const matrix4x4_t *matrix)
 {
        do
        {
@@ -1065,8 +1564,9 @@ void R_Shadow_Transform_Vertex3f_TexCoord2f(float *tc2f, int numverts, const flo
        }
        while (--numverts);
 }
+#endif
 
-void R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(float *out3f, int numverts, const float *vertex3f, const float *svector3f, const float *tvector3f, const float *normal3f, const vec3_t relativelightorigin)
+static void R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(float *out3f, int numverts, const float *vertex3f, const float *svector3f, const float *tvector3f, const float *normal3f, const vec3_t relativelightorigin)
 {
        int i;
        float lightdir[3];
@@ -1080,16 +1580,16 @@ void R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(float *out3f, int numverts, con
        }
 }
 
-void R_Shadow_GenTexCoords_Specular_NormalCubeMap(float *out3f, int numverts, const float *vertex3f, const float *svector3f, const float *tvector3f, const float *normal3f, const vec3_t relativelightorigin, const vec3_t relativeeyeorigin)
+static void R_Shadow_GenTexCoords_Specular_NormalCubeMap(float *out3f, int numverts, const float *vertex3f, const float *svector3f, const float *tvector3f, const float *normal3f, const vec3_t relativelightorigin, const vec3_t relativeeyeorigin)
 {
        int i;
        float lightdir[3], eyedir[3], halfdir[3];
        for (i = 0;i < numverts;i++, vertex3f += 3, svector3f += 3, tvector3f += 3, normal3f += 3, out3f += 3)
        {
                VectorSubtract(vertex3f, relativelightorigin, lightdir);
-               VectorNormalizeFast(lightdir);
+               VectorNormalize(lightdir);
                VectorSubtract(vertex3f, relativeeyeorigin, eyedir);
-               VectorNormalizeFast(eyedir);
+               VectorNormalize(eyedir);
                VectorAdd(lightdir, eyedir, halfdir);
                // the cubemap normalizes this for us
                out3f[0] = DotProduct(svector3f, halfdir);
@@ -1098,566 +1598,986 @@ void R_Shadow_GenTexCoords_Specular_NormalCubeMap(float *out3f, int numverts, co
        }
 }
 
-void R_Shadow_DiffuseLighting(int numverts, int numtriangles, const int *elements, const float *vertex3f, const float *svector3f, const float *tvector3f, const float *normal3f, const float *texcoord2f, const float *relativelightorigin, float lightradius, const float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *basetexture, rtexture_t *bumptexture, rtexture_t *lightcubemap)
+void R_Shadow_RenderLighting(int firstvertex, int numvertices, int numtriangles, const int *elements, const float *vertex3f, const float *svector3f, const float *tvector3f, const float *normal3f, const float *texcoord2f, const float *lightcolorbase, const float *lightcolorpants, const float *lightcolorshirt, rtexture_t *basetexture, rtexture_t *pantstexture, rtexture_t *shirttexture, rtexture_t *bumptexture, rtexture_t *glosstexture)
 {
        int renders;
-       float color[3], color2[3];
+       float color[3], color2[3], colorscale, specularscale;
        rmeshstate_t m;
-       memset(&m, 0, sizeof(m));
-       if (gl_dot3arb && gl_texturecubemap && gl_combine.integer && gl_stencil)
-       {
-               if (!bumptexture)
-                       bumptexture = r_shadow_blankbumptexture;
-               // colorscale accounts for how much we multiply the brightness during combine
-               // mult is how many times the final pass of the lighting will be
-               // performed to get more brightness than otherwise possible
-               // limit mult to 64 for sanity sake
-               if (r_shadow_texture3d.integer && r_textureunits.integer >= 4)
-               {
-                       // 3/2 3D combine path (Geforce3, Radeon 8500)
-                       m.tex[0] = R_GetTexture(bumptexture);
-                       m.texcubemap[1] = R_GetTexture(r_shadow_normalcubetexture);
-                       m.tex3d[2] = R_GetTexture(r_shadow_attenuation3dtexture);
-                       m.texcombinergb[0] = GL_REPLACE;
-                       m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(0,0,0,1);
-                       qglDisable(GL_BLEND);
-                       GL_Color(1,1,1,1);
-                       R_Mesh_GetSpace(numverts);
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                       R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(varray_texcoord3f[1], numverts, vertex3f, svector3f, tvector3f, normal3f, relativelightorigin);
-                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[2], numverts, vertex3f, matrix_modeltoattenuationxyz);
-                       R_Mesh_Draw(numverts, numtriangles, elements);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       m.tex[0] = R_GetTexture(basetexture);
-                       m.tex[1] = 0;
-                       m.texcubemap[1] = R_GetTexture(lightcubemap);
-                       m.tex3d[2] = 0;
-                       m.texcombinergb[0] = GL_MODULATE;
-                       m.texcombinergb[1] = GL_MODULATE;
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(1,1,1,0);
-                       qglBlendFunc(GL_DST_ALPHA, GL_ONE);
-                       qglEnable(GL_BLEND);
-
-                       VectorScale(lightcolor, r_colorscale * r_shadow_lightintensityscale.value, color2);
-                       for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
-                       {
-                               color[0] = bound(0, color2[0], 1);
-                               color[1] = bound(0, color2[1], 1);
-                               color[2] = bound(0, color2[2], 1);
-                               GL_Color(color[0], color[1], color[2], 1);
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                               if (lightcubemap)
-                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1], numverts, vertex3f, matrix_modeltofilter);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
-                               c_rt_lightmeshes++;
-                               c_rt_lighttris += numtriangles;
-                       }
+       // FIXME: support MATERIALFLAG_NODEPTHTEST
+       if (!basetexture)
+               basetexture = r_texture_white;
+       if (!bumptexture)
+               bumptexture = r_texture_blanknormalmap;
+       if (!pantstexture)
+               lightcolorpants = vec3_origin;
+       if (!shirttexture)
+               lightcolorshirt = vec3_origin;
+       if (glosstexture && r_shadow_gloss.integer >= 1 && r_shadow_glossintensity.value > 0 && r_shadow_rtlight->specularscale > 0)
+               specularscale = r_shadow_rtlight->specularscale * r_shadow_glossintensity.value;
+       else if (!glosstexture && r_shadow_gloss.integer >= 2 && r_shadow_gloss2intensity.value > 0 && r_shadow_glossintensity.value > 0 && r_shadow_rtlight->specularscale > 0)
+       {
+               glosstexture = r_texture_white;
+               specularscale = r_shadow_rtlight->specularscale * r_shadow_gloss2intensity.value;
+       }
+       else
+       {
+               glosstexture = r_texture_black;
+               specularscale = 0;
+       }
+       if ((r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * (VectorLength2(lightcolorbase) + VectorLength2(lightcolorpants) + VectorLength2(lightcolorshirt)) + specularscale * VectorLength2(lightcolorbase) <= 0.001)
+               return;
+       if (r_shadowstage == R_SHADOWSTAGE_VISIBLELIGHTING)
+       {
+               int passes = 0;
+               if (r_shadow_glsl.integer && r_shadow_program_light[0])
+               {
+                       // GLSL shader path (GFFX5200, Radeon 9500)
+                       // TODO: add direct pants/shirt rendering
+                       if (pantstexture && (r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorpants) > 0.001)
+                               R_Shadow_RenderLighting(firstvertex, numvertices, numtriangles, elements, vertex3f, svector3f, tvector3f, normal3f, texcoord2f, lightcolorpants, vec3_origin, vec3_origin, pantstexture, NULL, NULL, bumptexture, NULL);
+                       if (shirttexture && (r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorshirt) > 0.001)
+                               R_Shadow_RenderLighting(firstvertex, numvertices, numtriangles, elements, vertex3f, svector3f, tvector3f, normal3f, texcoord2f, lightcolorshirt, vec3_origin, vec3_origin, shirttexture, NULL, NULL, bumptexture, NULL);
+                       passes++;
                }
-               else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && lightcubemap)
+               else if (gl_dot3arb && gl_texturecubemap && r_textureunits.integer >= 2 && gl_combine.integer && gl_stencil)
                {
-                       // 1/2/2 3D combine path (original Radeon)
-                       m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(0,0,0,1);
-                       qglDisable(GL_BLEND);
-                       GL_Color(1,1,1,1);
-                       R_Mesh_GetSpace(numverts);
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[0], numverts, vertex3f, matrix_modeltoattenuationxyz);
-                       R_Mesh_Draw(numverts, numtriangles, elements);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       m.tex[0] = R_GetTexture(bumptexture);
-                       m.tex3d[0] = 0;
-                       m.texcubemap[1] = R_GetTexture(r_shadow_normalcubetexture);
-                       m.texcombinergb[0] = GL_REPLACE;
-                       m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
-                       R_Mesh_TextureState(&m);
-                       qglBlendFunc(GL_DST_ALPHA, GL_ZERO);
-                       qglEnable(GL_BLEND);
-                       R_Mesh_GetSpace(numverts);
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                       R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(varray_texcoord3f[1], numverts, vertex3f, svector3f, tvector3f, normal3f, relativelightorigin);
-                       R_Mesh_Draw(numverts, numtriangles, elements);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       m.tex[0] = R_GetTexture(basetexture);
-                       m.texcubemap[1] = R_GetTexture(lightcubemap);
-                       m.texcombinergb[0] = GL_MODULATE;
-                       m.texcombinergb[1] = GL_MODULATE;
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(1,1,1,0);
-                       qglBlendFunc(GL_DST_ALPHA, GL_ONE);
-
-                       VectorScale(lightcolor, r_colorscale * r_shadow_lightintensityscale.value, color2);
-                       for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
+                       // TODO: add direct pants/shirt rendering
+                       if (pantstexture && (r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorpants) > 0.001)
+                               R_Shadow_RenderLighting(firstvertex, numvertices, numtriangles, elements, vertex3f, svector3f, tvector3f, normal3f, texcoord2f, lightcolorpants, vec3_origin, vec3_origin, pantstexture, NULL, NULL, bumptexture, NULL);
+                       if (shirttexture && (r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorshirt) > 0.001)
+                               R_Shadow_RenderLighting(firstvertex, numvertices, numtriangles, elements, vertex3f, svector3f, tvector3f, normal3f, texcoord2f, lightcolorshirt, vec3_origin, vec3_origin, shirttexture, NULL, NULL, bumptexture, NULL);
+                       if (r_shadow_rtlight->ambientscale)
                        {
-                               color[0] = bound(0, color2[0], 1);
-                               color[1] = bound(0, color2[1], 1);
-                               color[2] = bound(0, color2[2], 1);
-                               GL_Color(color[0], color[1], color[2], 1);
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                               if (lightcubemap)
-                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1], numverts, vertex3f, matrix_modeltofilter);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
-                               c_rt_lightmeshes++;
-                               c_rt_lighttris += numtriangles;
+                               colorscale = r_shadow_rtlight->ambientscale;
+                               if (r_shadow_texture3d.integer && r_shadow_lightcubemap != r_texture_whitecube && r_textureunits.integer >= 4)
+                               {
+                               }
+                               else if (r_shadow_texture3d.integer && r_shadow_lightcubemap == r_texture_whitecube && r_textureunits.integer >= 2)
+                               {
+                               }
+                               else if (r_textureunits.integer >= 4 && r_shadow_lightcubemap != r_texture_whitecube)
+                               {
+                               }
+                               else if (r_textureunits.integer >= 3 && r_shadow_lightcubemap == r_texture_whitecube)
+                               {
+                               }
+                               else
+                                       passes++;
+                               VectorScale(lightcolorbase, colorscale, color2);
+                               for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
+                                       passes++;
                        }
-               }
-               else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && !lightcubemap)
-               {
-                       // 2/2 3D combine path (original Radeon)
-                       m.tex[0] = R_GetTexture(bumptexture);
-                       m.texcubemap[1] = R_GetTexture(r_shadow_normalcubetexture);
-                       m.texcombinergb[0] = GL_REPLACE;
-                       m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
-                       R_Mesh_TextureState(&m);
-                       GL_Color(1,1,1,1);
-                       qglColorMask(0,0,0,1);
-                       qglDisable(GL_BLEND);
-                       R_Mesh_GetSpace(numverts);
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                       R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(varray_texcoord3f[1], numverts, vertex3f, svector3f, tvector3f, normal3f, relativelightorigin);
-                       R_Mesh_Draw(numverts, numtriangles, elements);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       m.tex[0] = R_GetTexture(basetexture);
-                       m.tex3d[1] = R_GetTexture(r_shadow_attenuation3dtexture);
-                       m.texcubemap[1] = 0;
-                       m.texcombinergb[0] = GL_MODULATE;
-                       m.texcombinergb[1] = GL_MODULATE;
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(1,1,1,0);
-                       qglBlendFunc(GL_DST_ALPHA, GL_ONE);
-                       qglEnable(GL_BLEND);
-
-                       VectorScale(lightcolor, r_colorscale * r_shadow_lightintensityscale.value, color2);
-                       for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
+                       if (r_shadow_rtlight->diffusescale)
                        {
-                               color[0] = bound(0, color2[0], 1);
-                               color[1] = bound(0, color2[1], 1);
-                               color[2] = bound(0, color2[2], 1);
-                               GL_Color(color[0], color[1], color[2], 1);
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                               R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1], numverts, vertex3f, matrix_modeltoattenuationxyz);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
-                               c_rt_lightmeshes++;
-                               c_rt_lighttris += numtriangles;
+                               colorscale = r_shadow_rtlight->diffusescale;
+                               if (r_shadow_texture3d.integer && r_textureunits.integer >= 4)
+                               {
+                                       // 3/2 3D combine path (Geforce3, Radeon 8500)
+                                       passes++;
+                               }
+                               else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && r_shadow_lightcubemap != r_texture_whitecube)
+                               {
+                                       // 1/2/2 3D combine path (original Radeon)
+                                       passes += 2;
+                               }
+                               else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && r_shadow_lightcubemap == r_texture_whitecube)
+                               {
+                                       // 2/2 3D combine path (original Radeon)
+                                       passes++;
+                               }
+                               else if (r_textureunits.integer >= 4)
+                               {
+                                       // 4/2 2D combine path (Geforce3, Radeon 8500)
+                                       passes++;
+                               }
+                               else
+                               {
+                                       // 2/2/2 2D combine path (any dot3 card)
+                                       passes += 2;
+                               }
+                               VectorScale(lightcolorbase, colorscale, color2);
+                               for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
+                                       passes++;
                        }
-               }
-               else if (r_textureunits.integer >= 4)
-               {
-                       // 4/2 2D combine path (Geforce3, Radeon 8500)
-                       m.tex[0] = R_GetTexture(bumptexture);
-                       m.texcubemap[1] = R_GetTexture(r_shadow_normalcubetexture);
-                       m.texcombinergb[0] = GL_REPLACE;
-                       m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
-                       m.tex[2] = R_GetTexture(r_shadow_attenuation2dtexture);
-                       m.tex[3] = R_GetTexture(r_shadow_attenuation2dtexture);
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(0,0,0,1);
-                       qglDisable(GL_BLEND);
-                       GL_Color(1,1,1,1);
-                       R_Mesh_GetSpace(numverts);
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                       R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(varray_texcoord3f[1], numverts, vertex3f, svector3f, tvector3f, normal3f, relativelightorigin);
-                       R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[2], numverts, vertex3f, matrix_modeltoattenuationxyz);
-                       R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[3], numverts, vertex3f, matrix_modeltoattenuationz);
-                       R_Mesh_Draw(numverts, numtriangles, elements);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       m.tex[0] = R_GetTexture(basetexture);
-                       m.texcubemap[1] = R_GetTexture(lightcubemap);
-                       m.texcombinergb[0] = GL_MODULATE;
-                       m.texcombinergb[1] = GL_MODULATE;
-                       m.tex[2] = 0;
-                       m.tex[3] = 0;
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(1,1,1,0);
-                       qglBlendFunc(GL_DST_ALPHA, GL_ONE);
-                       qglEnable(GL_BLEND);
-
-                       VectorScale(lightcolor, r_colorscale * r_shadow_lightintensityscale.value, color2);
-                       for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
+                       if (specularscale && glosstexture != r_texture_black)
                        {
-                               color[0] = bound(0, color2[0], 1);
-                               color[1] = bound(0, color2[1], 1);
-                               color[2] = bound(0, color2[2], 1);
-                               GL_Color(color[0], color[1], color[2], 1);
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                               if (lightcubemap)
-                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1], numverts, vertex3f, matrix_modeltofilter);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
-                               c_rt_lightmeshes++;
-                               c_rt_lighttris += numtriangles;
+                               //if (gl_support_blendsquare)
+                               {
+                                       colorscale = specularscale;
+                                       if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && r_shadow_lightcubemap != r_texture_whitecube /* && gl_support_blendsquare*/) // FIXME: detect blendsquare!
+                                               passes += 4;
+                                       else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && r_shadow_lightcubemap == r_texture_whitecube /* && gl_support_blendsquare*/) // FIXME: detect blendsquare!
+                                               passes += 3;
+                                       else
+                                               passes += 4;
+                                       VectorScale(lightcolorbase, colorscale, color2);
+                                       for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
+                                               passes++;
+                               }
                        }
                }
                else
                {
-                       // 2/2/2 2D combine path (any dot3 card)
-                       m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
-                       m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(0,0,0,1);
-                       qglDisable(GL_BLEND);
-                       GL_Color(1,1,1,1);
-                       R_Mesh_GetSpace(numverts);
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[0], numverts, vertex3f, matrix_modeltoattenuationxyz);
-                       R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[1], numverts, vertex3f, matrix_modeltoattenuationz);
-                       R_Mesh_Draw(numverts, numtriangles, elements);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       m.tex[0] = R_GetTexture(bumptexture);
-                       m.tex[1] = 0;
-                       m.texcubemap[1] = R_GetTexture(r_shadow_normalcubetexture);
-                       m.texcombinergb[0] = GL_REPLACE;
-                       m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
-                       R_Mesh_TextureState(&m);
-                       qglBlendFunc(GL_DST_ALPHA, GL_ZERO);
-                       qglEnable(GL_BLEND);
-                       R_Mesh_GetSpace(numverts);
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                       R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(varray_texcoord3f[1], numverts, vertex3f, svector3f, tvector3f, normal3f, relativelightorigin);
-                       R_Mesh_Draw(numverts, numtriangles, elements);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       m.tex[0] = R_GetTexture(basetexture);
-                       m.texcubemap[1] = R_GetTexture(lightcubemap);
-                       m.texcombinergb[0] = GL_MODULATE;
-                       m.texcombinergb[1] = GL_MODULATE;
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(1,1,1,0);
-                       qglBlendFunc(GL_DST_ALPHA, GL_ONE);
-
-                       VectorScale(lightcolor, r_colorscale * r_shadow_lightintensityscale.value, color2);
-                       for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
+                       // TODO: add direct pants/shirt rendering
+                       if (pantstexture && (r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorpants) > 0.001)
+                               R_Shadow_RenderLighting(firstvertex, numvertices, numtriangles, elements, vertex3f, svector3f, tvector3f, normal3f, texcoord2f, lightcolorpants, vec3_origin, vec3_origin, pantstexture, NULL, NULL, bumptexture, NULL);
+                       if (shirttexture && (r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorshirt) > 0.001)
+                               R_Shadow_RenderLighting(firstvertex, numvertices, numtriangles, elements, vertex3f, svector3f, tvector3f, normal3f, texcoord2f, lightcolorshirt, vec3_origin, vec3_origin, shirttexture, NULL, NULL, bumptexture, NULL);
+                       if (r_shadow_rtlight->ambientscale)
                        {
-                               color[0] = bound(0, color2[0], 1);
-                               color[1] = bound(0, color2[1], 1);
-                               color[2] = bound(0, color2[2], 1);
-                               GL_Color(color[0], color[1], color[2], 1);
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                               if (lightcubemap)
-                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1], numverts, vertex3f, matrix_modeltofilter);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
-                               c_rt_lightmeshes++;
-                               c_rt_lighttris += numtriangles;
+                               VectorScale(lightcolorbase, r_shadow_rtlight->ambientscale, color2);
+                               for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
+                                       passes++;
+                       }
+                       if (r_shadow_rtlight->diffusescale)
+                       {
+                               VectorScale(lightcolorbase, r_shadow_rtlight->diffusescale, color2);
+                               for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
+                                       passes++;
                        }
                }
-       }
-       else
-       {
-               if (r_textureunits.integer >= 2)
+               if (passes)
                {
-                       // voodoo2
-#if 1
-                       m.tex[0] = R_GetTexture(basetexture);
-                       m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
-                       R_Mesh_TextureState(&m);
-                       qglBlendFunc(GL_SRC_ALPHA, GL_ONE);
-                       qglEnable(GL_BLEND);
-#else
-                       m.tex[0] = R_GetTexture(basetexture);
-                       m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
-                       m.blendfunc1 = GL_SRC_ALPHA;
-                       m.blendfunc2 = GL_ONE;
+                       GL_Color(0.1*passes, 0.025*passes, 0, 1);
+                       memset(&m, 0, sizeof(m));
+                       m.pointer_vertex = vertex3f;
                        R_Mesh_State(&m);
+                       GL_LockArrays(firstvertex, numvertices);
+                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                       GL_LockArrays(0, 0);
+               }
+               return;
+       }
+       else if (r_shadowstage == R_SHADOWSTAGE_LIGHT_GLSL)
+       {
+               // GLSL shader path (GFFX5200, Radeon 9500)
+               // TODO: add direct pants/shirt rendering
+               if (pantstexture && (r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorpants) > 0.001)
+                       R_Shadow_RenderLighting(firstvertex, numvertices, numtriangles, elements, vertex3f, svector3f, tvector3f, normal3f, texcoord2f, lightcolorpants, vec3_origin, vec3_origin, pantstexture, NULL, NULL, bumptexture, NULL);
+               if (shirttexture && (r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorshirt) > 0.001)
+                       R_Shadow_RenderLighting(firstvertex, numvertices, numtriangles, elements, vertex3f, svector3f, tvector3f, normal3f, texcoord2f, lightcolorshirt, vec3_origin, vec3_origin, shirttexture, NULL, NULL, bumptexture, NULL);
+               R_Mesh_VertexPointer(vertex3f);
+               R_Mesh_TexCoordPointer(0, 2, texcoord2f);
+               R_Mesh_TexCoordPointer(1, 3, svector3f);
+               R_Mesh_TexCoordPointer(2, 3, tvector3f);
+               R_Mesh_TexCoordPointer(3, 3, normal3f);
+               R_Mesh_TexBind(0, R_GetTexture(bumptexture));
+               R_Mesh_TexBind(1, R_GetTexture(basetexture));
+               R_Mesh_TexBind(2, R_GetTexture(glosstexture));
+               if (r_shadow_lightpermutation & SHADERPERMUTATION_SPECULAR)
+               {
+                       qglUniform1fARB(qglGetUniformLocationARB(r_shadow_lightprog, "SpecularScale"), specularscale);CHECKGLERROR
+               }
+               qglUniform3fARB(qglGetUniformLocationARB(r_shadow_lightprog, "LightColor"), lightcolorbase[0], lightcolorbase[1], lightcolorbase[2]);CHECKGLERROR
+               GL_LockArrays(firstvertex, numvertices);
+               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+               c_rt_lightmeshes++;
+               c_rt_lighttris += numtriangles;
+               GL_LockArrays(0, 0);
+       }
+       else if (r_shadowstage == R_SHADOWSTAGE_LIGHT_DOT3)
+       {
+               // TODO: add direct pants/shirt rendering
+               if (pantstexture && (r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorpants) > 0.001)
+                       R_Shadow_RenderLighting(firstvertex, numvertices, numtriangles, elements, vertex3f, svector3f, tvector3f, normal3f, texcoord2f, lightcolorpants, vec3_origin, vec3_origin, pantstexture, NULL, NULL, bumptexture, NULL);
+               if (shirttexture && (r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorshirt) > 0.001)
+                       R_Shadow_RenderLighting(firstvertex, numvertices, numtriangles, elements, vertex3f, svector3f, tvector3f, normal3f, texcoord2f, lightcolorshirt, vec3_origin, vec3_origin, shirttexture, NULL, NULL, bumptexture, NULL);
+               if (r_shadow_rtlight->ambientscale)
+               {
+                       GL_Color(1,1,1,1);
+                       colorscale = r_shadow_rtlight->ambientscale;
+                       // colorscale accounts for how much we multiply the brightness
+                       // during combine.
+                       //
+                       // mult is how many times the final pass of the lighting will be
+                       // performed to get more brightness than otherwise possible.
+                       //
+                       // Limit mult to 64 for sanity sake.
+                       if (r_shadow_texture3d.integer && r_shadow_lightcubemap != r_texture_whitecube && r_textureunits.integer >= 4)
+                       {
+                               // 3 3D combine path (Geforce3, Radeon 8500)
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[0] = vertex3f;
+                               m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
+#else
+                               m.pointer_texcoord3f[0] = varray_texcoord3f[0];
+                               R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[0] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                               m.tex[1] = R_GetTexture(basetexture);
+                               m.pointer_texcoord[1] = texcoord2f;
+                               m.texcubemap[2] = R_GetTexture(r_shadow_lightcubemap);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[2] = vertex3f;
+                               m.texmatrix[2] = r_shadow_entitytolight;
+#else
+                               m.pointer_texcoord3f[2] = varray_texcoord3f[2];
+                               R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[2] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytolight);
+#endif
+                               GL_BlendFunc(GL_ONE, GL_ONE);
+                       }
+                       else if (r_shadow_texture3d.integer && r_shadow_lightcubemap == r_texture_whitecube && r_textureunits.integer >= 2)
+                       {
+                               // 2 3D combine path (Geforce3, original Radeon)
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[0] = vertex3f;
+                               m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
+#else
+                               m.pointer_texcoord3f[0] = varray_texcoord3f[0];
+                               R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[0] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                               m.tex[1] = R_GetTexture(basetexture);
+                               m.pointer_texcoord[1] = texcoord2f;
+                               GL_BlendFunc(GL_ONE, GL_ONE);
+                       }
+                       else if (r_textureunits.integer >= 4 && r_shadow_lightcubemap != r_texture_whitecube)
+                       {
+                               // 4 2D combine path (Geforce3, Radeon 8500)
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[0] = vertex3f;
+                               m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
+#else
+                               m.pointer_texcoord[0] = varray_texcoord2f[0];
+                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[0] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                               m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[1] = vertex3f;
+                               m.texmatrix[1] = r_shadow_entitytoattenuationz;
+#else
+                               m.pointer_texcoord[1] = varray_texcoord2f[1];
+                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationz);
+#endif
+                               m.tex[2] = R_GetTexture(basetexture);
+                               m.pointer_texcoord[2] = texcoord2f;
+                               if (r_shadow_lightcubemap != r_texture_whitecube)
+                               {
+                                       m.texcubemap[3] = R_GetTexture(r_shadow_lightcubemap);
+#ifdef USETEXMATRIX
+                                       m.pointer_texcoord3f[3] = vertex3f;
+                                       m.texmatrix[3] = r_shadow_entitytolight;
+#else
+                                       m.pointer_texcoord3f[3] = varray_texcoord3f[3];
+                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[3] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytolight);
+#endif
+                               }
+                               GL_BlendFunc(GL_ONE, GL_ONE);
+                       }
+                       else if (r_textureunits.integer >= 3 && r_shadow_lightcubemap == r_texture_whitecube)
+                       {
+                               // 3 2D combine path (Geforce3, original Radeon)
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[0] = vertex3f;
+                               m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
+#else
+                               m.pointer_texcoord[0] = varray_texcoord2f[0];
+                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[0] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                               m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[1] = vertex3f;
+                               m.texmatrix[1] = r_shadow_entitytoattenuationz;
+#else
+                               m.pointer_texcoord[1] = varray_texcoord2f[1];
+                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationz);
+#endif
+                               m.tex[2] = R_GetTexture(basetexture);
+                               m.pointer_texcoord[2] = texcoord2f;
+                               GL_BlendFunc(GL_ONE, GL_ONE);
+                       }
+                       else
+                       {
+                               // 2/2/2 2D combine path (any dot3 card)
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[0] = vertex3f;
+                               m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
+#else
+                               m.pointer_texcoord[0] = varray_texcoord2f[0];
+                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[0] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                               m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[1] = vertex3f;
+                               m.texmatrix[1] = r_shadow_entitytoattenuationz;
+#else
+                               m.pointer_texcoord[1] = varray_texcoord2f[1];
+                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationz);
+#endif
+                               R_Mesh_State(&m);
+                               GL_ColorMask(0,0,0,1);
+                               GL_BlendFunc(GL_ONE, GL_ZERO);
+                               GL_LockArrays(firstvertex, numvertices);
+                               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                               GL_LockArrays(0, 0);
+                               c_rt_lightmeshes++;
+                               c_rt_lighttris += numtriangles;
+
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(basetexture);
+                               m.pointer_texcoord[0] = texcoord2f;
+                               if (r_shadow_lightcubemap != r_texture_whitecube)
+                               {
+                                       m.texcubemap[1] = R_GetTexture(r_shadow_lightcubemap);
+#ifdef USETEXMATRIX
+                                       m.pointer_texcoord3f[1] = vertex3f;
+                                       m.texmatrix[1] = r_shadow_entitytolight;
+#else
+                                       m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytolight);
 #endif
-                       VectorScale(lightcolor, r_colorscale * r_shadow_lightintensityscale.value, color2);
+                               }
+                               GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
+                       }
+                       // this final code is shared
+                       R_Mesh_State(&m);
+                       GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 0);
+                       VectorScale(lightcolorbase, colorscale, color2);
+                       GL_LockArrays(firstvertex, numvertices);
                        for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
                        {
-                               color[0] = bound(0, color2[0], 1);
-                               color[1] = bound(0, color2[1], 1);
-                               color[2] = bound(0, color2[2], 1);
-                               GL_UseColorArray();
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[1], numverts, vertex3f, matrix_modeltoattenuationxyz);
-                               R_Shadow_VertexLightingWithXYAttenuationTexture(numverts, vertex3f, normal3f, color, matrix_modeltofilter);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
+                               GL_Color(bound(0, color2[0], 1), bound(0, color2[1], 1), bound(0, color2[2], 1), 1);
+                               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                               c_rt_lightmeshes++;
+                               c_rt_lighttris += numtriangles;
                        }
+                       GL_LockArrays(0, 0);
                }
-               else
+               if (r_shadow_rtlight->diffusescale)
                {
-                       // voodoo1
-#if 1
-                       m.tex[0] = R_GetTexture(basetexture);
-                       R_Mesh_TextureState(&m);
-                       qglBlendFunc(GL_SRC_ALPHA, GL_ONE);
-                       qglEnable(GL_BLEND);
+                       GL_Color(1,1,1,1);
+                       colorscale = r_shadow_rtlight->diffusescale;
+                       // colorscale accounts for how much we multiply the brightness
+                       // during combine.
+                       //
+                       // mult is how many times the final pass of the lighting will be
+                       // performed to get more brightness than otherwise possible.
+                       //
+                       // Limit mult to 64 for sanity sake.
+                       if (r_shadow_texture3d.integer && r_textureunits.integer >= 4)
+                       {
+                               // 3/2 3D combine path (Geforce3, Radeon 8500)
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(bumptexture);
+                               m.texcombinergb[0] = GL_REPLACE;
+                               m.pointer_texcoord[0] = texcoord2f;
+                               m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
+                               m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
+                               m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                               R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, svector3f + 3 * firstvertex, tvector3f + 3 * firstvertex, normal3f + 3 * firstvertex, r_shadow_entitylightorigin);
+                               m.tex3d[2] = R_GetTexture(r_shadow_attenuation3dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[2] = vertex3f;
+                               m.texmatrix[2] = r_shadow_entitytoattenuationxyz;
 #else
-                       m.tex[0] = R_GetTexture(basetexture);
-                       m.blendfunc1 = GL_SRC_ALPHA;
-                       m.blendfunc2 = GL_ONE;
-                       R_Mesh_State(&m);
+                               m.pointer_texcoord3f[2] = varray_texcoord3f[2];
+                               R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[2] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
 #endif
-                       VectorScale(lightcolor, r_colorscale * r_shadow_lightintensityscale.value, color2);
-                       for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
+                               R_Mesh_State(&m);
+                               GL_ColorMask(0,0,0,1);
+                               GL_BlendFunc(GL_ONE, GL_ZERO);
+                               GL_LockArrays(firstvertex, numvertices);
+                               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                               GL_LockArrays(0, 0);
+                               c_rt_lightmeshes++;
+                               c_rt_lighttris += numtriangles;
+
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(basetexture);
+                               m.pointer_texcoord[0] = texcoord2f;
+                               if (r_shadow_lightcubemap != r_texture_whitecube)
+                               {
+                                       m.texcubemap[1] = R_GetTexture(r_shadow_lightcubemap);
+#ifdef USETEXMATRIX
+                                       m.pointer_texcoord3f[1] = vertex3f;
+                                       m.texmatrix[1] = r_shadow_entitytolight;
+#else
+                                       m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytolight);
+#endif
+                               }
+                               GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
+                       }
+                       else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && r_shadow_lightcubemap != r_texture_whitecube)
                        {
-                               color[0] = bound(0, color2[0], 1);
-                               color[1] = bound(0, color2[1], 1);
-                               color[2] = bound(0, color2[2], 1);
-                               GL_UseColorArray();
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                               R_Shadow_VertexLighting(numverts, vertex3f, normal3f, color, matrix_modeltofilter);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
+                               // 1/2/2 3D combine path (original Radeon)
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[0] = vertex3f;
+                               m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
+#else
+                               m.pointer_texcoord3f[0] = varray_texcoord3f[0];
+                               R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[0] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                               R_Mesh_State(&m);
+                               GL_ColorMask(0,0,0,1);
+                               GL_BlendFunc(GL_ONE, GL_ZERO);
+                               GL_LockArrays(firstvertex, numvertices);
+                               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                               GL_LockArrays(0, 0);
+                               c_rt_lightmeshes++;
+                               c_rt_lighttris += numtriangles;
+
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(bumptexture);
+                               m.texcombinergb[0] = GL_REPLACE;
+                               m.pointer_texcoord[0] = texcoord2f;
+                               m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
+                               m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
+                               m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                               R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, svector3f + 3 * firstvertex, tvector3f + 3 * firstvertex, normal3f + 3 * firstvertex, r_shadow_entitylightorigin);
+                               R_Mesh_State(&m);
+                               GL_BlendFunc(GL_DST_ALPHA, GL_ZERO);
+                               GL_LockArrays(firstvertex, numvertices);
+                               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                               GL_LockArrays(0, 0);
+                               c_rt_lightmeshes++;
+                               c_rt_lighttris += numtriangles;
+
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(basetexture);
+                               m.pointer_texcoord[0] = texcoord2f;
+                               if (r_shadow_lightcubemap != r_texture_whitecube)
+                               {
+                                       m.texcubemap[1] = R_GetTexture(r_shadow_lightcubemap);
+#ifdef USETEXMATRIX
+                                       m.pointer_texcoord3f[1] = vertex3f;
+                                       m.texmatrix[1] = r_shadow_entitytolight;
+#else
+                                       m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytolight);
+#endif
+                               }
+                               GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
                        }
-               }
-       }
-}
+                       else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && r_shadow_lightcubemap == r_texture_whitecube)
+                       {
+                               // 2/2 3D combine path (original Radeon)
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(bumptexture);
+                               m.texcombinergb[0] = GL_REPLACE;
+                               m.pointer_texcoord[0] = texcoord2f;
+                               m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
+                               m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
+                               m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                               R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, svector3f + 3 * firstvertex, tvector3f + 3 * firstvertex, normal3f + 3 * firstvertex, r_shadow_entitylightorigin);
+                               R_Mesh_State(&m);
+                               GL_ColorMask(0,0,0,1);
+                               GL_BlendFunc(GL_ONE, GL_ZERO);
+                               GL_LockArrays(firstvertex, numvertices);
+                               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                               GL_LockArrays(0, 0);
+                               c_rt_lightmeshes++;
+                               c_rt_lighttris += numtriangles;
 
-void R_Shadow_SpecularLighting(int numverts, int numtriangles, const int *elements, const float *vertex3f, const float *svector3f, const float *tvector3f, const float *normal3f, const float *texcoord2f, const float *relativelightorigin, const float *relativeeyeorigin, float lightradius, const float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *glosstexture, rtexture_t *bumptexture, rtexture_t *lightcubemap)
-{
-       int renders;
-       float color[3], color2[3];
-       rmeshstate_t m;
-       if (!gl_dot3arb || !gl_texturecubemap || !gl_combine.integer || !gl_stencil)
-               return;
-       memset(&m, 0, sizeof(m));
-       if (!bumptexture)
-               bumptexture = r_shadow_blankbumptexture;
-       if (!glosstexture)
-               glosstexture = r_shadow_blankglosstexture;
-       if (r_shadow_gloss.integer >= 2 || (r_shadow_gloss.integer >= 1 && glosstexture != r_shadow_blankglosstexture))
-       {
-               if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && lightcubemap /*&& gl_support_blendsquare*/) // FIXME: detect blendsquare!
-               {
-                       // 2/0/0/1/2 3D combine blendsquare path
-                       m.tex[0] = R_GetTexture(bumptexture);
-                       m.texcubemap[1] = R_GetTexture(r_shadow_normalcubetexture);
-                       m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(0,0,0,1);
-                       // this squares the result
-                       qglEnable(GL_BLEND);
-                       qglBlendFunc(GL_SRC_ALPHA, GL_ZERO);
-                       GL_Color(1,1,1,1);
-                       R_Mesh_GetSpace(numverts);
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                       R_Shadow_GenTexCoords_Specular_NormalCubeMap(varray_texcoord3f[1], numverts, vertex3f, svector3f, tvector3f, normal3f, relativelightorigin, relativeeyeorigin);
-                       R_Mesh_Draw(numverts, numtriangles, elements);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       m.tex[0] = 0;
-                       m.texcubemap[1] = 0;
-                       m.texcombinergb[1] = GL_MODULATE;
-                       R_Mesh_TextureState(&m);
-                       // square alpha in framebuffer a few times to make it shiny
-                       qglBlendFunc(GL_ZERO, GL_DST_ALPHA);
-                       // these comments are a test run through this math for intensity 0.5
-                       // 0.5 * 0.5 = 0.25 (done by the BlendFunc earlier)
-                       // 0.25 * 0.25 = 0.0625 (this is another pass)
-                       // 0.0625 * 0.0625 = 0.00390625 (this is another pass)
-                       for (renders = 0;renders < 2;renders++)
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(basetexture);
+                               m.pointer_texcoord[0] = texcoord2f;
+                               m.tex3d[1] = R_GetTexture(r_shadow_attenuation3dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[1] = vertex3f;
+                               m.texmatrix[1] = r_shadow_entitytoattenuationxyz;
+#else
+                               m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                               R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                               GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
+                       }
+                       else if (r_textureunits.integer >= 4)
                        {
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
+                               // 4/2 2D combine path (Geforce3, Radeon 8500)
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(bumptexture);
+                               m.texcombinergb[0] = GL_REPLACE;
+                               m.pointer_texcoord[0] = texcoord2f;
+                               m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
+                               m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
+                               m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                               R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, svector3f + 3 * firstvertex, tvector3f + 3 * firstvertex, normal3f + 3 * firstvertex, r_shadow_entitylightorigin);
+                               m.tex[2] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[2] = vertex3f;
+                               m.texmatrix[2] = r_shadow_entitytoattenuationxyz;
+#else
+                               m.pointer_texcoord[2] = varray_texcoord2f[2];
+                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[2] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                               m.tex[3] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[3] = vertex3f;
+                               m.texmatrix[3] = r_shadow_entitytoattenuationz;
+#else
+                               m.pointer_texcoord[3] = varray_texcoord2f[3];
+                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[3] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationz);
+#endif
+                               R_Mesh_State(&m);
+                               GL_ColorMask(0,0,0,1);
+                               GL_BlendFunc(GL_ONE, GL_ZERO);
+                               GL_LockArrays(firstvertex, numvertices);
+                               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                               GL_LockArrays(0, 0);
+                               c_rt_lightmeshes++;
+                               c_rt_lighttris += numtriangles;
+
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(basetexture);
+                               m.pointer_texcoord[0] = texcoord2f;
+                               if (r_shadow_lightcubemap != r_texture_whitecube)
+                               {
+                                       m.texcubemap[1] = R_GetTexture(r_shadow_lightcubemap);
+#ifdef USETEXMATRIX
+                                       m.pointer_texcoord3f[1] = vertex3f;
+                                       m.texmatrix[1] = r_shadow_entitytolight;
+#else
+                                       m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytolight);
+#endif
+                               }
+                               GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
                        }
-                       c_rt_lightmeshes += 3;
-                       c_rt_lighttris += numtriangles * 3;
-
-                       m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
-                       R_Mesh_TextureState(&m);
-                       qglBlendFunc(GL_DST_ALPHA, GL_ZERO);
-                       R_Mesh_GetSpace(numverts);
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[0], numverts, vertex3f, matrix_modeltoattenuationxyz);
-                       R_Mesh_Draw(numverts, numtriangles, elements);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       m.tex3d[0] = 0;
-                       m.tex[0] = R_GetTexture(glosstexture);
-                       m.texcubemap[1] = R_GetTexture(lightcubemap);
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(1,1,1,0);
-                       qglBlendFunc(GL_DST_ALPHA, GL_ONE);
-
-                       VectorScale(lightcolor, r_colorscale * r_shadow_lightintensityscale.value * 0.25f, color2);
+                       else
+                       {
+                               // 2/2/2 2D combine path (any dot3 card)
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[0] = vertex3f;
+                               m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
+#else
+                               m.pointer_texcoord[0] = varray_texcoord2f[0];
+                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[0] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                               m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[1] = vertex3f;
+                               m.texmatrix[1] = r_shadow_entitytoattenuationz;
+#else
+                               m.pointer_texcoord[1] = varray_texcoord2f[1];
+                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationz);
+#endif
+                               R_Mesh_State(&m);
+                               GL_ColorMask(0,0,0,1);
+                               GL_BlendFunc(GL_ONE, GL_ZERO);
+                               GL_LockArrays(firstvertex, numvertices);
+                               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                               GL_LockArrays(0, 0);
+                               c_rt_lightmeshes++;
+                               c_rt_lighttris += numtriangles;
+
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(bumptexture);
+                               m.texcombinergb[0] = GL_REPLACE;
+                               m.pointer_texcoord[0] = texcoord2f;
+                               m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
+                               m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
+                               m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                               R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, svector3f + 3 * firstvertex, tvector3f + 3 * firstvertex, normal3f + 3 * firstvertex, r_shadow_entitylightorigin);
+                               R_Mesh_State(&m);
+                               GL_BlendFunc(GL_DST_ALPHA, GL_ZERO);
+                               GL_LockArrays(firstvertex, numvertices);
+                               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                               GL_LockArrays(0, 0);
+                               c_rt_lightmeshes++;
+                               c_rt_lighttris += numtriangles;
+
+                               memset(&m, 0, sizeof(m));
+                               m.pointer_vertex = vertex3f;
+                               m.tex[0] = R_GetTexture(basetexture);
+                               m.pointer_texcoord[0] = texcoord2f;
+                               if (r_shadow_lightcubemap != r_texture_whitecube)
+                               {
+                                       m.texcubemap[1] = R_GetTexture(r_shadow_lightcubemap);
+#ifdef USETEXMATRIX
+                                       m.pointer_texcoord3f[1] = vertex3f;
+                                       m.texmatrix[1] = r_shadow_entitytolight;
+#else
+                                       m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytolight);
+#endif
+                               }
+                               GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
+                       }
+                       // this final code is shared
+                       R_Mesh_State(&m);
+                       GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 0);
+                       VectorScale(lightcolorbase, colorscale, color2);
+                       GL_LockArrays(firstvertex, numvertices);
                        for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
                        {
-                               color[0] = bound(0, color2[0], 1);
-                               color[1] = bound(0, color2[1], 1);
-                               color[2] = bound(0, color2[2], 1);
-                               GL_Color(color[0], color[1], color[2], 1);
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                               if (lightcubemap)
-                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1], numverts, vertex3f, matrix_modeltofilter);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
+                               GL_Color(bound(0, color2[0], 1), bound(0, color2[1], 1), bound(0, color2[2], 1), 1);
+                               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
                                c_rt_lightmeshes++;
                                c_rt_lighttris += numtriangles;
                        }
+                       GL_LockArrays(0, 0);
                }
-               else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && !lightcubemap /*&& gl_support_blendsquare*/) // FIXME: detect blendsquare!
-               {
-                       // 2/0/0/2 3D combine blendsquare path
-                       m.tex[0] = R_GetTexture(bumptexture);
-                       m.texcubemap[1] = R_GetTexture(r_shadow_normalcubetexture);
-                       m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(0,0,0,1);
-                       // this squares the result
-                       qglEnable(GL_BLEND);
-                       qglBlendFunc(GL_SRC_ALPHA, GL_ZERO);
-                       GL_Color(1,1,1,1);
-                       R_Mesh_GetSpace(numverts);
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                       R_Shadow_GenTexCoords_Specular_NormalCubeMap(varray_texcoord3f[1], numverts, vertex3f, svector3f, tvector3f, normal3f, relativelightorigin, relativeeyeorigin);
-                       R_Mesh_Draw(numverts, numtriangles, elements);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       m.tex[0] = 0;
-                       m.texcubemap[1] = 0;
-                       m.texcombinergb[1] = GL_MODULATE;
-                       R_Mesh_TextureState(&m);
-                       // square alpha in framebuffer a few times to make it shiny
-                       qglBlendFunc(GL_ZERO, GL_DST_ALPHA);
-                       // these comments are a test run through this math for intensity 0.5
-                       // 0.5 * 0.5 = 0.25 (done by the BlendFunc earlier)
-                       // 0.25 * 0.25 = 0.0625 (this is another pass)
-                       // 0.0625 * 0.0625 = 0.00390625 (this is another pass)
-                       for (renders = 0;renders < 2;renders++)
+               if (specularscale && glosstexture != r_texture_black)
+               {
+                       // FIXME: detect blendsquare!
+                       //if (gl_support_blendsquare)
+                       {
+                               colorscale = specularscale;
+                               GL_Color(1,1,1,1);
+                               if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && r_shadow_lightcubemap != r_texture_whitecube /* && gl_support_blendsquare*/) // FIXME: detect blendsquare!
+                               {
+                                       // 2/0/0/1/2 3D combine blendsquare path
+                                       memset(&m, 0, sizeof(m));
+                                       m.pointer_vertex = vertex3f;
+                                       m.tex[0] = R_GetTexture(bumptexture);
+                                       m.pointer_texcoord[0] = texcoord2f;
+                                       m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
+                                       m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
+                                       m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                                       R_Shadow_GenTexCoords_Specular_NormalCubeMap(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, svector3f + 3 * firstvertex, tvector3f + 3 * firstvertex, normal3f + 3 * firstvertex, r_shadow_entitylightorigin, r_shadow_entityeyeorigin);
+                                       R_Mesh_State(&m);
+                                       GL_ColorMask(0,0,0,1);
+                                       // this squares the result
+                                       GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
+                                       GL_LockArrays(firstvertex, numvertices);
+                                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                                       GL_LockArrays(0, 0);
+                                       c_rt_lightmeshes++;
+                                       c_rt_lighttris += numtriangles;
+
+                                       memset(&m, 0, sizeof(m));
+                                       m.pointer_vertex = vertex3f;
+                                       R_Mesh_State(&m);
+                                       GL_LockArrays(firstvertex, numvertices);
+                                       // square alpha in framebuffer a few times to make it shiny
+                                       GL_BlendFunc(GL_ZERO, GL_DST_ALPHA);
+                                       // these comments are a test run through this math for intensity 0.5
+                                       // 0.5 * 0.5 = 0.25 (done by the BlendFunc earlier)
+                                       // 0.25 * 0.25 = 0.0625 (this is another pass)
+                                       // 0.0625 * 0.0625 = 0.00390625 (this is another pass)
+                                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                                       c_rt_lightmeshes++;
+                                       c_rt_lighttris += numtriangles;
+                                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                                       c_rt_lightmeshes++;
+                                       c_rt_lighttris += numtriangles;
+                                       GL_LockArrays(0, 0);
+
+                                       memset(&m, 0, sizeof(m));
+                                       m.pointer_vertex = vertex3f;
+                                       m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
+#ifdef USETEXMATRIX
+                                       m.pointer_texcoord3f[0] = vertex3f;
+                                       m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
+#else
+                                       m.pointer_texcoord3f[0] = varray_texcoord3f[0];
+                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[0] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                                       R_Mesh_State(&m);
+                                       GL_BlendFunc(GL_DST_ALPHA, GL_ZERO);
+                                       GL_LockArrays(firstvertex, numvertices);
+                                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                                       GL_LockArrays(0, 0);
+                                       c_rt_lightmeshes++;
+                                       c_rt_lighttris += numtriangles;
+
+                                       memset(&m, 0, sizeof(m));
+                                       m.pointer_vertex = vertex3f;
+                                       m.tex[0] = R_GetTexture(glosstexture);
+                                       m.pointer_texcoord[0] = texcoord2f;
+                                       if (r_shadow_lightcubemap != r_texture_whitecube)
+                                       {
+                                               m.texcubemap[1] = R_GetTexture(r_shadow_lightcubemap);
+#ifdef USETEXMATRIX
+                                               m.pointer_texcoord3f[1] = vertex3f;
+                                               m.texmatrix[1] = r_shadow_entitytolight;
+#else
+                                               m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                                               R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytolight);
+#endif
+                                       }
+                                       GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
+                               }
+                               else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && r_shadow_lightcubemap == r_texture_whitecube /* && gl_support_blendsquare*/) // FIXME: detect blendsquare!
+                               {
+                                       // 2/0/0/2 3D combine blendsquare path
+                                       memset(&m, 0, sizeof(m));
+                                       m.pointer_vertex = vertex3f;
+                                       m.tex[0] = R_GetTexture(bumptexture);
+                                       m.pointer_texcoord[0] = texcoord2f;
+                                       m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
+                                       m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
+                                       m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                                       R_Shadow_GenTexCoords_Specular_NormalCubeMap(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, svector3f + 3 * firstvertex, tvector3f + 3 * firstvertex, normal3f + 3 * firstvertex, r_shadow_entitylightorigin, r_shadow_entityeyeorigin);
+                                       R_Mesh_State(&m);
+                                       GL_ColorMask(0,0,0,1);
+                                       // this squares the result
+                                       GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
+                                       GL_LockArrays(firstvertex, numvertices);
+                                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                                       GL_LockArrays(0, 0);
+                                       c_rt_lightmeshes++;
+                                       c_rt_lighttris += numtriangles;
+
+                                       memset(&m, 0, sizeof(m));
+                                       m.pointer_vertex = vertex3f;
+                                       R_Mesh_State(&m);
+                                       GL_LockArrays(firstvertex, numvertices);
+                                       // square alpha in framebuffer a few times to make it shiny
+                                       GL_BlendFunc(GL_ZERO, GL_DST_ALPHA);
+                                       // these comments are a test run through this math for intensity 0.5
+                                       // 0.5 * 0.5 = 0.25 (done by the BlendFunc earlier)
+                                       // 0.25 * 0.25 = 0.0625 (this is another pass)
+                                       // 0.0625 * 0.0625 = 0.00390625 (this is another pass)
+                                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                                       c_rt_lightmeshes++;
+                                       c_rt_lighttris += numtriangles;
+                                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                                       c_rt_lightmeshes++;
+                                       c_rt_lighttris += numtriangles;
+                                       GL_LockArrays(0, 0);
+
+                                       memset(&m, 0, sizeof(m));
+                                       m.pointer_vertex = vertex3f;
+                                       m.tex[0] = R_GetTexture(glosstexture);
+                                       m.pointer_texcoord[0] = texcoord2f;
+                                       m.tex3d[1] = R_GetTexture(r_shadow_attenuation3dtexture);
+#ifdef USETEXMATRIX
+                                       m.pointer_texcoord3f[1] = vertex3f;
+                                       m.texmatrix[1] = r_shadow_entitytoattenuationxyz;
+#else
+                                       m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                                       GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
+                               }
+                               else
+                               {
+                                       // 2/0/0/2/2 2D combine blendsquare path
+                                       memset(&m, 0, sizeof(m));
+                                       m.pointer_vertex = vertex3f;
+                                       m.tex[0] = R_GetTexture(bumptexture);
+                                       m.pointer_texcoord[0] = texcoord2f;
+                                       m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
+                                       m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
+                                       m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                                       R_Shadow_GenTexCoords_Specular_NormalCubeMap(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, svector3f + 3 * firstvertex, tvector3f + 3 * firstvertex, normal3f + 3 * firstvertex, r_shadow_entitylightorigin, r_shadow_entityeyeorigin);
+                                       R_Mesh_State(&m);
+                                       GL_ColorMask(0,0,0,1);
+                                       // this squares the result
+                                       GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
+                                       GL_LockArrays(firstvertex, numvertices);
+                                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                                       GL_LockArrays(0, 0);
+                                       c_rt_lightmeshes++;
+                                       c_rt_lighttris += numtriangles;
+
+                                       memset(&m, 0, sizeof(m));
+                                       m.pointer_vertex = vertex3f;
+                                       R_Mesh_State(&m);
+                                       GL_LockArrays(firstvertex, numvertices);
+                                       // square alpha in framebuffer a few times to make it shiny
+                                       GL_BlendFunc(GL_ZERO, GL_DST_ALPHA);
+                                       // these comments are a test run through this math for intensity 0.5
+                                       // 0.5 * 0.5 = 0.25 (done by the BlendFunc earlier)
+                                       // 0.25 * 0.25 = 0.0625 (this is another pass)
+                                       // 0.0625 * 0.0625 = 0.00390625 (this is another pass)
+                                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                                       c_rt_lightmeshes++;
+                                       c_rt_lighttris += numtriangles;
+                                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                                       c_rt_lightmeshes++;
+                                       c_rt_lighttris += numtriangles;
+                                       GL_LockArrays(0, 0);
+
+                                       memset(&m, 0, sizeof(m));
+                                       m.pointer_vertex = vertex3f;
+                                       m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                                       m.pointer_texcoord3f[0] = vertex3f;
+                                       m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
+#else
+                                       m.pointer_texcoord[0] = varray_texcoord2f[0];
+                                       R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[0] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                                       m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                                       m.pointer_texcoord3f[1] = vertex3f;
+                                       m.texmatrix[1] = r_shadow_entitytoattenuationz;
+#else
+                                       m.pointer_texcoord[1] = varray_texcoord2f[1];
+                                       R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationz);
+#endif
+                                       R_Mesh_State(&m);
+                                       GL_BlendFunc(GL_DST_ALPHA, GL_ZERO);
+                                       GL_LockArrays(firstvertex, numvertices);
+                                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                                       GL_LockArrays(0, 0);
+                                       c_rt_lightmeshes++;
+                                       c_rt_lighttris += numtriangles;
+
+                                       memset(&m, 0, sizeof(m));
+                                       m.pointer_vertex = vertex3f;
+                                       m.tex[0] = R_GetTexture(glosstexture);
+                                       m.pointer_texcoord[0] = texcoord2f;
+                                       if (r_shadow_lightcubemap != r_texture_whitecube)
+                                       {
+                                               m.texcubemap[1] = R_GetTexture(r_shadow_lightcubemap);
+#ifdef USETEXMATRIX
+                                               m.pointer_texcoord3f[1] = vertex3f;
+                                               m.texmatrix[1] = r_shadow_entitytolight;
+#else
+                                               m.pointer_texcoord3f[1] = varray_texcoord3f[1];
+                                               R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytolight);
+#endif
+                                       }
+                                       GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
+                               }
+                               R_Mesh_State(&m);
+                               GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 0);
+                               VectorScale(lightcolorbase, colorscale, color2);
+                               GL_LockArrays(firstvertex, numvertices);
+                               for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
+                               {
+                                       GL_Color(bound(0, color2[0], 1), bound(0, color2[1], 1), bound(0, color2[2], 1), 1);
+                                       R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                                       c_rt_lightmeshes++;
+                                       c_rt_lighttris += numtriangles;
+                               }
+                               GL_LockArrays(0, 0);
+                       }
+               }
+       }
+       else if (r_shadowstage == R_SHADOWSTAGE_LIGHT_VERTEX)
+       {
+               // TODO: add direct pants/shirt rendering
+               if (pantstexture && (r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorpants) > 0.001)
+                       R_Shadow_RenderLighting(firstvertex, numvertices, numtriangles, elements, vertex3f, svector3f, tvector3f, normal3f, texcoord2f, lightcolorpants, vec3_origin, vec3_origin, pantstexture, NULL, NULL, bumptexture, NULL);
+               if (shirttexture && (r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorshirt) > 0.001)
+                       R_Shadow_RenderLighting(firstvertex, numvertices, numtriangles, elements, vertex3f, svector3f, tvector3f, normal3f, texcoord2f, lightcolorshirt, vec3_origin, vec3_origin, shirttexture, NULL, NULL, bumptexture, NULL);
+               if (r_shadow_rtlight->ambientscale)
+               {
+                       GL_BlendFunc(GL_ONE, GL_ONE);
+                       VectorScale(lightcolorbase, r_shadow_rtlight->ambientscale, color2);
+                       memset(&m, 0, sizeof(m));
+                       m.pointer_vertex = vertex3f;
+                       m.tex[0] = R_GetTexture(basetexture);
+                       m.pointer_texcoord[0] = texcoord2f;
+                       if (r_textureunits.integer >= 2)
                        {
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
+                               // voodoo2
+                               m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[1] = vertex3f;
+                               m.texmatrix[1] = r_shadow_entitytoattenuationxyz;
+#else
+                               m.pointer_texcoord[1] = varray_texcoord2f[1];
+                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                               if (r_textureunits.integer >= 3)
+                               {
+                                       // Geforce3/Radeon class but not using dot3
+                                       m.tex[2] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                                       m.pointer_texcoord3f[2] = vertex3f;
+                                       m.texmatrix[2] = r_shadow_entitytoattenuationz;
+#else
+                                       m.pointer_texcoord[2] = varray_texcoord2f[2];
+                                       R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[2] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationz);
+#endif
+                               }
                        }
-                       c_rt_lightmeshes += 3;
-                       c_rt_lighttris += numtriangles * 3;
-
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                       m.tex[0] = R_GetTexture(glosstexture);
-                       m.tex3d[1] = R_GetTexture(r_shadow_attenuation3dtexture);
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(1,1,1,0);
-                       qglBlendFunc(GL_DST_ALPHA, GL_ONE);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       VectorScale(lightcolor, r_colorscale * r_shadow_lightintensityscale.value * 0.25f, color2);
+                       if (r_textureunits.integer >= 3)
+                               m.pointer_color = NULL;
+                       else
+                               m.pointer_color = varray_color4f;
+                       R_Mesh_State(&m);
                        for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
                        {
                                color[0] = bound(0, color2[0], 1);
                                color[1] = bound(0, color2[1], 1);
                                color[2] = bound(0, color2[2], 1);
-                               GL_Color(color[0], color[1], color[2], 1);
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                               R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1], numverts, vertex3f, matrix_modeltoattenuationxyz);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
+                               if (r_textureunits.integer >= 3)
+                                       GL_Color(color[0], color[1], color[2], 1);
+                               else if (r_textureunits.integer >= 2)
+                                       R_Shadow_VertexNoShadingWithZAttenuation(numvertices, vertex3f + 3 * firstvertex, color);
+                               else
+                                       R_Shadow_VertexNoShadingWithXYZAttenuation(numvertices, vertex3f + 3 * firstvertex, color);
+                               GL_LockArrays(firstvertex, numvertices);
+                               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                               GL_LockArrays(0, 0);
                                c_rt_lightmeshes++;
                                c_rt_lighttris += numtriangles;
                        }
                }
-               else if (r_textureunits.integer >= 2 /*&& gl_support_blendsquare*/) // FIXME: detect blendsquare!
-               {
-                       // 2/0/0/2/2 2D combine blendsquare path
-                       m.tex[0] = R_GetTexture(bumptexture);
-                       m.texcubemap[1] = R_GetTexture(r_shadow_normalcubetexture);
-                       m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(0,0,0,1);
-                       // this squares the result
-                       qglEnable(GL_BLEND);
-                       qglBlendFunc(GL_SRC_ALPHA, GL_ZERO);
-                       GL_Color(1,1,1,1);
-                       R_Mesh_GetSpace(numverts);
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                       R_Shadow_GenTexCoords_Specular_NormalCubeMap(varray_texcoord3f[1], numverts, vertex3f, svector3f, tvector3f, normal3f, relativelightorigin, relativeeyeorigin);
-                       R_Mesh_Draw(numverts, numtriangles, elements);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       m.tex[0] = 0;
-                       m.texcubemap[1] = 0;
-                       m.texcombinergb[1] = GL_MODULATE;
-                       R_Mesh_TextureState(&m);
-                       // square alpha in framebuffer a few times to make it shiny
-                       qglBlendFunc(GL_ZERO, GL_DST_ALPHA);
-                       // these comments are a test run through this math for intensity 0.5
-                       // 0.5 * 0.5 = 0.25 (done by the BlendFunc earlier)
-                       // 0.25 * 0.25 = 0.0625 (this is another pass)
-                       // 0.0625 * 0.0625 = 0.00390625 (this is another pass)
-                       for (renders = 0;renders < 2;renders++)
+               if (r_shadow_rtlight->diffusescale)
+               {
+                       GL_BlendFunc(GL_ONE, GL_ONE);
+                       VectorScale(lightcolorbase, r_shadow_rtlight->diffusescale, color2);
+                       memset(&m, 0, sizeof(m));
+                       m.pointer_vertex = vertex3f;
+                       m.pointer_color = varray_color4f;
+                       m.tex[0] = R_GetTexture(basetexture);
+                       m.pointer_texcoord[0] = texcoord2f;
+                       if (r_textureunits.integer >= 2)
                        {
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
+                               // voodoo2
+                               m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                               m.pointer_texcoord3f[1] = vertex3f;
+                               m.texmatrix[1] = r_shadow_entitytoattenuationxyz;
+#else
+                               m.pointer_texcoord[1] = varray_texcoord2f[1];
+                               R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[1] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationxyz);
+#endif
+                               if (r_textureunits.integer >= 3)
+                               {
+                                       // Geforce3/Radeon class but not using dot3
+                                       m.tex[2] = R_GetTexture(r_shadow_attenuation2dtexture);
+#ifdef USETEXMATRIX
+                                       m.pointer_texcoord3f[2] = vertex3f;
+                                       m.texmatrix[2] = r_shadow_entitytoattenuationz;
+#else
+                                       m.pointer_texcoord[2] = varray_texcoord2f[2];
+                                       R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[2] + 3 * firstvertex, numvertices, vertex3f + 3 * firstvertex, &r_shadow_entitytoattenuationz);
+#endif
+                               }
                        }
-                       c_rt_lightmeshes += 3;
-                       c_rt_lighttris += numtriangles * 3;
-
-                       m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
-                       m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
-                       R_Mesh_TextureState(&m);
-                       qglBlendFunc(GL_DST_ALPHA, GL_ZERO);
-                       R_Mesh_GetSpace(numverts);
-                       R_Mesh_CopyVertex3f(vertex3f, numverts);
-                       R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[0], numverts, vertex3f, matrix_modeltoattenuationxyz);
-                       R_Shadow_Transform_Vertex3f_TexCoord2f(varray_texcoord2f[1], numverts, vertex3f, matrix_modeltoattenuationz);
-                       R_Mesh_Draw(numverts, numtriangles, elements);
-                       c_rt_lightmeshes++;
-                       c_rt_lighttris += numtriangles;
-
-                       m.tex[0] = R_GetTexture(glosstexture);
-                       m.texcubemap[1] = R_GetTexture(lightcubemap);
-                       R_Mesh_TextureState(&m);
-                       qglColorMask(1,1,1,0);
-                       qglBlendFunc(GL_DST_ALPHA, GL_ONE);
-
-                       VectorScale(lightcolor, r_colorscale * r_shadow_lightintensityscale.value * 0.25f, color2);
+                       R_Mesh_State(&m);
                        for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
                        {
                                color[0] = bound(0, color2[0], 1);
                                color[1] = bound(0, color2[1], 1);
                                color[2] = bound(0, color2[2], 1);
-                               GL_Color(color[0], color[1], color[2], 1);
-                               R_Mesh_GetSpace(numverts);
-                               R_Mesh_CopyVertex3f(vertex3f, numverts);
-                               R_Mesh_CopyTexCoord2f(0, texcoord2f, numverts);
-                               if (lightcubemap)
-                                       R_Shadow_Transform_Vertex3f_TexCoord3f(varray_texcoord3f[1], numverts, vertex3f, matrix_modeltofilter);
-                               R_Mesh_Draw(numverts, numtriangles, elements);
+                               if (r_textureunits.integer >= 3)
+                                       R_Shadow_VertexShading(numvertices, vertex3f + 3 * firstvertex, normal3f + 3 * firstvertex, color);
+                               else if (r_textureunits.integer >= 2)
+                                       R_Shadow_VertexShadingWithZAttenuation(numvertices, vertex3f + 3 * firstvertex, normal3f + 3 * firstvertex, color);
+                               else
+                                       R_Shadow_VertexShadingWithXYZAttenuation(numvertices, vertex3f + 3 * firstvertex, normal3f + 3 * firstvertex, color);
+                               GL_LockArrays(firstvertex, numvertices);
+                               R_Mesh_Draw(firstvertex, numvertices, numtriangles, elements);
+                               GL_LockArrays(0, 0);
                                c_rt_lightmeshes++;
                                c_rt_lighttris += numtriangles;
                        }
@@ -1665,229 +2585,610 @@ void R_Shadow_SpecularLighting(int numverts, int numtriangles, const int *elemen
        }
 }
 
-void R_Shadow_DrawWorldLightShadowVolume(matrix4x4_t *matrix, worldlight_t *light)
+void R_RTLight_UpdateFromDLight(rtlight_t *rtlight, const dlight_t *light, int isstatic)
 {
-       R_Mesh_Matrix(matrix);
-       R_Shadow_RenderShadowMeshVolume(light->shadowvolume);
+       int j, k;
+       float scale;
+       R_RTLight_Uncompile(rtlight);
+       memset(rtlight, 0, sizeof(*rtlight));
+
+       VectorCopy(light->origin, rtlight->shadoworigin);
+       VectorCopy(light->color, rtlight->color);
+       rtlight->radius = light->radius;
+       //rtlight->cullradius = rtlight->radius;
+       //rtlight->cullradius2 = rtlight->radius * rtlight->radius;
+       rtlight->cullmins[0] = rtlight->shadoworigin[0] - rtlight->radius;
+       rtlight->cullmins[1] = rtlight->shadoworigin[1] - rtlight->radius;
+       rtlight->cullmins[2] = rtlight->shadoworigin[2] - rtlight->radius;
+       rtlight->cullmaxs[0] = rtlight->shadoworigin[0] + rtlight->radius;
+       rtlight->cullmaxs[1] = rtlight->shadoworigin[1] + rtlight->radius;
+       rtlight->cullmaxs[2] = rtlight->shadoworigin[2] + rtlight->radius;
+       rtlight->cubemapname[0] = 0;
+       if (light->cubemapname[0])
+               strcpy(rtlight->cubemapname, light->cubemapname);
+       else if (light->cubemapnum > 0)
+               sprintf(rtlight->cubemapname, "cubemaps/%i", light->cubemapnum);
+       rtlight->shadow = light->shadow;
+       rtlight->corona = light->corona;
+       rtlight->style = light->style;
+       rtlight->isstatic = isstatic;
+       rtlight->coronasizescale = light->coronasizescale;
+       rtlight->ambientscale = light->ambientscale;
+       rtlight->diffusescale = light->diffusescale;
+       rtlight->specularscale = light->specularscale;
+       rtlight->flags = light->flags;
+       Matrix4x4_Invert_Simple(&rtlight->matrix_worldtolight, &light->matrix);
+       // ConcatScale won't work here because this needs to scale rotate and
+       // translate, not just rotate
+       scale = 1.0f / rtlight->radius;
+       for (k = 0;k < 3;k++)
+               for (j = 0;j < 4;j++)
+                       rtlight->matrix_worldtolight.m[k][j] *= scale;
+
+       rtlight->lightmap_cullradius = bound(0, rtlight->radius, 2048.0f);
+       rtlight->lightmap_cullradius2 = rtlight->lightmap_cullradius * rtlight->lightmap_cullradius;
+       VectorScale(rtlight->color, rtlight->radius * (rtlight->style >= 0 ? d_lightstylevalue[rtlight->style] : 128) * 0.125f, rtlight->lightmap_light);
+       rtlight->lightmap_subtract = 1.0f / rtlight->lightmap_cullradius2;
 }
 
-cvar_t r_editlights = {0, "r_editlights", "0"};
-cvar_t r_editlights_cursordistance = {0, "r_editlights_distance", "1024"};
-cvar_t r_editlights_cursorpushback = {0, "r_editlights_pushback", "0"};
-cvar_t r_editlights_cursorpushoff = {0, "r_editlights_pushoff", "4"};
-cvar_t r_editlights_cursorgrid = {0, "r_editlights_grid", "4"};
-cvar_t r_editlights_quakelightsizescale = {CVAR_SAVE, "r_editlights_quakelightsizescale", "0.8"};
-cvar_t r_editlights_rtlightssizescale = {CVAR_SAVE, "r_editlights_rtlightssizescale", "0.7"};
-cvar_t r_editlights_rtlightscolorscale = {CVAR_SAVE, "r_editlights_rtlightscolorscale", "2"};
-worldlight_t *r_shadow_worldlightchain;
-worldlight_t *r_shadow_selectedlight;
-vec3_t r_editlights_cursorlocation;
+// compiles rtlight geometry
+// (undone by R_FreeCompiledRTLight, which R_UpdateLight calls)
+void R_RTLight_Compile(rtlight_t *rtlight)
+{
+       int shadowmeshes, shadowtris, lightmeshes, lighttris, numleafs, numleafpvsbytes, numsurfaces;
+       entity_render_t *ent = r_refdef.worldentity;
+       model_t *model = r_refdef.worldmodel;
+       qbyte *data;
+
+       // compile the light
+       rtlight->compiled = true;
+       rtlight->static_numleafs = 0;
+       rtlight->static_numleafpvsbytes = 0;
+       rtlight->static_leaflist = NULL;
+       rtlight->static_leafpvs = NULL;
+       rtlight->static_numsurfaces = 0;
+       rtlight->static_surfacelist = NULL;
+       rtlight->cullmins[0] = rtlight->shadoworigin[0] - rtlight->radius;
+       rtlight->cullmins[1] = rtlight->shadoworigin[1] - rtlight->radius;
+       rtlight->cullmins[2] = rtlight->shadoworigin[2] - rtlight->radius;
+       rtlight->cullmaxs[0] = rtlight->shadoworigin[0] + rtlight->radius;
+       rtlight->cullmaxs[1] = rtlight->shadoworigin[1] + rtlight->radius;
+       rtlight->cullmaxs[2] = rtlight->shadoworigin[2] + rtlight->radius;
+
+       if (model && model->GetLightInfo)
+       {
+               // this variable directs the DrawShadowVolume and DrawLight code to capture into the mesh chain instead of rendering
+               r_shadow_compilingrtlight = rtlight;
+               R_Shadow_EnlargeLeafSurfaceBuffer(model->brush.num_leafs, model->num_surfaces);
+               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);
+               numleafpvsbytes = (model->brush.num_leafs + 7) >> 3;
+               data = Mem_Alloc(r_shadow_mempool, sizeof(int) * numleafs + numleafpvsbytes + sizeof(int) * numsurfaces);
+               rtlight->static_numleafs = numleafs;
+               rtlight->static_numleafpvsbytes = numleafpvsbytes;
+               rtlight->static_leaflist = (void *)data;data += sizeof(int) * numleafs;
+               rtlight->static_leafpvs = (void *)data;data += numleafpvsbytes;
+               rtlight->static_numsurfaces = numsurfaces;
+               rtlight->static_surfacelist = (void *)data;data += sizeof(int) * numsurfaces;
+               if (numleafs)
+                       memcpy(rtlight->static_leaflist, r_shadow_buffer_leaflist, rtlight->static_numleafs * sizeof(*rtlight->static_leaflist));
+               if (numleafpvsbytes)
+                       memcpy(rtlight->static_leafpvs, r_shadow_buffer_leafpvs, rtlight->static_numleafpvsbytes);
+               if (numsurfaces)
+                       memcpy(rtlight->static_surfacelist, r_shadow_buffer_surfacelist, rtlight->static_numsurfaces * sizeof(*rtlight->static_surfacelist));
+               if (model->DrawShadowVolume && rtlight->shadow)
+               {
+                       rtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_shadow_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
+                       model->DrawShadowVolume(ent, rtlight->shadoworigin, rtlight->radius, numsurfaces, r_shadow_buffer_surfacelist, rtlight->cullmins, rtlight->cullmaxs);
+                       rtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_shadow_mempool, rtlight->static_meshchain_shadow, false, false);
+               }
+               if (model->DrawLight)
+               {
+                       rtlight->static_meshchain_light = Mod_ShadowMesh_Begin(r_shadow_mempool, 32768, 32768, NULL, NULL, NULL, true, false, true);
+                       model->DrawLight(ent, vec3_origin, numsurfaces, r_shadow_buffer_surfacelist);
+                       rtlight->static_meshchain_light = Mod_ShadowMesh_Finish(r_shadow_mempool, rtlight->static_meshchain_light, true, false);
+               }
+               // switch back to rendering when DrawShadowVolume or DrawLight is called
+               r_shadow_compilingrtlight = NULL;
+       }
+
+
+       // use smallest available cullradius - box radius or light radius
+       //rtlight->cullradius = RadiusFromBoundsAndOrigin(rtlight->cullmins, rtlight->cullmaxs, rtlight->shadoworigin);
+       //rtlight->cullradius = min(rtlight->cullradius, rtlight->radius);
+
+       shadowmeshes = 0;
+       shadowtris = 0;
+       if (rtlight->static_meshchain_shadow)
+       {
+               shadowmesh_t *mesh;
+               for (mesh = rtlight->static_meshchain_shadow;mesh;mesh = mesh->next)
+               {
+                       shadowmeshes++;
+                       shadowtris += mesh->numtriangles;
+               }
+       }
+
+       lightmeshes = 0;
+       lighttris = 0;
+       if (rtlight->static_meshchain_light)
+       {
+               shadowmesh_t *mesh;
+               for (mesh = rtlight->static_meshchain_light;mesh;mesh = mesh->next)
+               {
+                       lightmeshes++;
+                       lighttris += mesh->numtriangles;
+               }
+       }
+
+       Con_DPrintf("static light built: %f %f %f : %f %f %f box, %i shadow volume triangles (in %i meshes), %i light triangles (in %i meshes)\n", rtlight->cullmins[0], rtlight->cullmins[1], rtlight->cullmins[2], rtlight->cullmaxs[0], rtlight->cullmaxs[1], rtlight->cullmaxs[2], shadowtris, shadowmeshes, lighttris, lightmeshes);
+}
+
+void R_RTLight_Uncompile(rtlight_t *rtlight)
+{
+       if (rtlight->compiled)
+       {
+               if (rtlight->static_meshchain_shadow)
+                       Mod_ShadowMesh_Free(rtlight->static_meshchain_shadow);
+               rtlight->static_meshchain_shadow = NULL;
+               if (rtlight->static_meshchain_light)
+                       Mod_ShadowMesh_Free(rtlight->static_meshchain_light);
+               rtlight->static_meshchain_light = NULL;
+               // these allocations are grouped
+               if (rtlight->static_leaflist)
+                       Mem_Free(rtlight->static_leaflist);
+               rtlight->static_numleafs = 0;
+               rtlight->static_numleafpvsbytes = 0;
+               rtlight->static_leaflist = NULL;
+               rtlight->static_leafpvs = NULL;
+               rtlight->static_numsurfaces = 0;
+               rtlight->static_surfacelist = NULL;
+               rtlight->compiled = false;
+       }
+}
+
+void R_Shadow_UncompileWorldLights(void)
+{
+       dlight_t *light;
+       for (light = r_shadow_worldlightchain;light;light = light->next)
+               R_RTLight_Uncompile(&light->rtlight);
+}
+
+void R_Shadow_DrawEntityShadow(entity_render_t *ent, rtlight_t *rtlight, int numsurfaces, int *surfacelist)
+{
+       vec3_t relativeshadoworigin, relativeshadowmins, relativeshadowmaxs;
+       vec_t relativeshadowradius;
+       if (ent == r_refdef.worldentity)
+       {
+               if (rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
+               {
+                       shadowmesh_t *mesh;
+                       R_Mesh_Matrix(&ent->matrix);
+                       for (mesh = rtlight->static_meshchain_shadow;mesh;mesh = mesh->next)
+                       {
+                               R_Mesh_VertexPointer(mesh->vertex3f);
+                               GL_LockArrays(0, mesh->numverts);
+                               if (r_shadowstage == R_SHADOWSTAGE_STENCIL)
+                               {
+                                       // decrement stencil if backface is behind depthbuffer
+                                       qglCullFace(GL_BACK); // quake is backwards, this culls front faces
+                                       qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);
+                                       R_Mesh_Draw(0, mesh->numverts, mesh->numtriangles, mesh->element3i);
+                                       c_rtcached_shadowmeshes++;
+                                       c_rtcached_shadowtris += mesh->numtriangles;
+                                       // increment stencil if frontface is behind depthbuffer
+                                       qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
+                                       qglStencilOp(GL_KEEP, GL_INCR, GL_KEEP);
+                               }
+                               R_Mesh_Draw(0, mesh->numverts, mesh->numtriangles, mesh->element3i);
+                               c_rtcached_shadowmeshes++;
+                               c_rtcached_shadowtris += mesh->numtriangles;
+                               GL_LockArrays(0, 0);
+                       }
+               }
+               else if (numsurfaces)
+               {
+                       R_Mesh_Matrix(&ent->matrix);
+                       ent->model->DrawShadowVolume(ent, rtlight->shadoworigin, rtlight->radius, numsurfaces, surfacelist, rtlight->cullmins, rtlight->cullmaxs);
+               }
+       }
+       else
+       {
+               Matrix4x4_Transform(&ent->inversematrix, rtlight->shadoworigin, relativeshadoworigin);
+               relativeshadowradius = rtlight->radius / ent->scale;
+               relativeshadowmins[0] = relativeshadoworigin[0] - relativeshadowradius;
+               relativeshadowmins[1] = relativeshadoworigin[1] - relativeshadowradius;
+               relativeshadowmins[2] = relativeshadoworigin[2] - relativeshadowradius;
+               relativeshadowmaxs[0] = relativeshadoworigin[0] + relativeshadowradius;
+               relativeshadowmaxs[1] = relativeshadoworigin[1] + relativeshadowradius;
+               relativeshadowmaxs[2] = relativeshadoworigin[2] + relativeshadowradius;
+               R_Mesh_Matrix(&ent->matrix);
+               ent->model->DrawShadowVolume(ent, relativeshadoworigin, relativeshadowradius, ent->model->nummodelsurfaces, ent->model->surfacelist, relativeshadowmins, relativeshadowmaxs);
+       }
+}
+
+void R_Shadow_DrawEntityLight(entity_render_t *ent, rtlight_t *rtlight, vec3_t lightcolor, int numsurfaces, int *surfacelist)
+{
+       shadowmesh_t *mesh;
+       // set up properties for rendering light onto this entity
+       r_shadow_entitylightcolor[0] = lightcolor[0] * ent->colormod[0] * ent->alpha;
+       r_shadow_entitylightcolor[1] = lightcolor[1] * ent->colormod[1] * ent->alpha;
+       r_shadow_entitylightcolor[2] = lightcolor[2] * ent->colormod[2] * ent->alpha;
+       Matrix4x4_Concat(&r_shadow_entitytolight, &rtlight->matrix_worldtolight, &ent->matrix);
+       Matrix4x4_Concat(&r_shadow_entitytoattenuationxyz, &matrix_attenuationxyz, &r_shadow_entitytolight);
+       Matrix4x4_Concat(&r_shadow_entitytoattenuationz, &matrix_attenuationz, &r_shadow_entitytolight);
+       Matrix4x4_Transform(&ent->inversematrix, rtlight->shadoworigin, r_shadow_entitylightorigin);
+       Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, r_shadow_entityeyeorigin);
+       R_Mesh_Matrix(&ent->matrix);
+       if (r_shadowstage == R_SHADOWSTAGE_LIGHT_GLSL)
+       {
+               R_Mesh_TexBindCubeMap(3, R_GetTexture(r_shadow_lightcubemap));
+               R_Mesh_TexMatrix(3, &r_shadow_entitytolight);
+               qglUniform3fARB(qglGetUniformLocationARB(r_shadow_lightprog, "LightPosition"), r_shadow_entitylightorigin[0], r_shadow_entitylightorigin[1], r_shadow_entitylightorigin[2]);CHECKGLERROR
+               if (r_shadow_lightpermutation & (SHADERPERMUTATION_SPECULAR | SHADERPERMUTATION_FOG | SHADERPERMUTATION_OFFSETMAPPING))
+               {
+                       qglUniform3fARB(qglGetUniformLocationARB(r_shadow_lightprog, "EyePosition"), r_shadow_entityeyeorigin[0], r_shadow_entityeyeorigin[1], r_shadow_entityeyeorigin[2]);CHECKGLERROR
+               }
+       }
+       if (ent == r_refdef.worldentity)
+       {
+               if (rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compilelight.integer)
+               {
+                       for (mesh = rtlight->static_meshchain_light;mesh;mesh = mesh->next)
+                               R_Shadow_RenderLighting(0, mesh->numverts, mesh->numtriangles, mesh->element3i, mesh->vertex3f, mesh->svector3f, mesh->tvector3f, mesh->normal3f, mesh->texcoord2f, r_shadow_entitylightcolor, vec3_origin, vec3_origin, mesh->map_diffuse, NULL, NULL, mesh->map_normal, mesh->map_specular);
+               }
+               else
+                       ent->model->DrawLight(ent, r_shadow_entitylightcolor, numsurfaces, surfacelist);
+       }
+       else
+               ent->model->DrawLight(ent, r_shadow_entitylightcolor, ent->model->nummodelsurfaces, ent->model->surfacelist);
+}
+
+void R_DrawRTLight(rtlight_t *rtlight, qboolean visible)
+{
+       int i, usestencil;
+       float f;
+       vec3_t lightcolor;
+       int numleafs, numsurfaces;
+       int *leaflist, *surfacelist;
+       qbyte *leafpvs;
+       int numlightentities;
+       int numshadowentities;
+       entity_render_t *lightentities[MAX_EDICTS];
+       entity_render_t *shadowentities[MAX_EDICTS];
+
+       // skip lights that don't light (corona only lights)
+       if (rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale < 0.01)
+               return;
+
+       f = (rtlight->style >= 0 ? d_lightstylevalue[rtlight->style] : 128) * (1.0f / 256.0f) * r_shadow_lightintensityscale.value;
+       VectorScale(rtlight->color, f, lightcolor);
+       if (VectorLength2(lightcolor) < 0.01)
+               return;
+       /*
+       if (rtlight->selected)
+       {
+               f = 2 + sin(realtime * M_PI * 4.0);
+               VectorScale(lightcolor, f, lightcolor);
+       }
+       */
+
+       // loading is done before visibility checks because loading should happen
+       // all at once at the start of a level, not when it stalls gameplay.
+       // (especially important to benchmarks)
+       // compile light
+       if (rtlight->isstatic && !rtlight->compiled && r_shadow_realtime_world_compile.integer)
+               R_RTLight_Compile(rtlight);
+       // load cubemap
+       r_shadow_lightcubemap = rtlight->cubemapname[0] ? R_Shadow_Cubemap(rtlight->cubemapname) : r_texture_whitecube;
+
+       // if the light box is offscreen, skip it
+       if (R_CullBox(rtlight->cullmins, rtlight->cullmaxs))
+               return;
+
+       if (rtlight->compiled && r_shadow_realtime_world_compile.integer)
+       {
+               // compiled light, world available and can receive realtime lighting
+               // retrieve leaf information
+               numleafs = rtlight->static_numleafs;
+               leaflist = rtlight->static_leaflist;
+               leafpvs = rtlight->static_leafpvs;
+               numsurfaces = rtlight->static_numsurfaces;
+               surfacelist = rtlight->static_surfacelist;
+       }
+       else if (r_refdef.worldmodel && r_refdef.worldmodel->GetLightInfo)
+       {
+               // dynamic light, world available and can receive realtime lighting
+               // calculate lit surfaces and leafs
+               R_Shadow_EnlargeLeafSurfaceBuffer(r_refdef.worldmodel->brush.num_leafs, r_refdef.worldmodel->num_surfaces);
+               r_refdef.worldmodel->GetLightInfo(r_refdef.worldentity, 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);
+               leaflist = r_shadow_buffer_leaflist;
+               leafpvs = r_shadow_buffer_leafpvs;
+               surfacelist = r_shadow_buffer_surfacelist;
+               // if the reduced leaf bounds are offscreen, skip it
+               if (R_CullBox(rtlight->cullmins, rtlight->cullmaxs))
+                       return;
+       }
+       else
+       {
+               // no world
+               numleafs = 0;
+               leaflist = NULL;
+               leafpvs = NULL;
+               numsurfaces = 0;
+               surfacelist = NULL;
+       }
+       // check if light is illuminating any visible leafs
+       if (numleafs)
+       {
+               for (i = 0;i < numleafs;i++)
+                       if (r_worldleafvisible[leaflist[i]])
+                               break;
+               if (i == numleafs)
+                       return;
+       }
+       // set up a scissor rectangle for this light
+       if (R_Shadow_ScissorForBBox(rtlight->cullmins, rtlight->cullmaxs))
+               return;
+
+       numlightentities = 0;
+       if (numsurfaces)
+               lightentities[numlightentities++] = r_refdef.worldentity;
+       numshadowentities = 0;
+       if (numsurfaces)
+               shadowentities[numshadowentities++] = r_refdef.worldentity;
+       if (r_drawentities.integer)
+       {
+               for (i = 0;i < r_refdef.numentities;i++)
+               {
+                       entity_render_t *ent = r_refdef.entities[i];
+                       if (BoxesOverlap(ent->mins, ent->maxs, rtlight->cullmins, rtlight->cullmaxs)
+                        && ent->model
+                        && !(ent->flags & RENDER_TRANSPARENT)
+                        && (r_refdef.worldmodel == NULL || r_refdef.worldmodel->brush.BoxTouchingLeafPVS == NULL || r_refdef.worldmodel->brush.BoxTouchingLeafPVS(r_refdef.worldmodel, leafpvs, ent->mins, ent->maxs)))
+                       {
+                               // about the VectorDistance2 - light emitting entities should not cast their own shadow
+                               if ((ent->flags & RENDER_SHADOW) && ent->model->DrawShadowVolume && VectorDistance2(ent->origin, rtlight->shadoworigin) > 0.1)
+                                       shadowentities[numshadowentities++] = ent;
+                               if (ent->visframe == r_framecount && (ent->flags & RENDER_LIGHT) && ent->model->DrawLight)
+                                       lightentities[numlightentities++] = ent;
+                       }
+               }
+       }
 
-static int castshadowcount = 1;
-void R_Shadow_NewWorldLight(vec3_t origin, float radius, vec3_t color, int style, const char *cubemapname, int castshadow)
-{
-       int i, j, k, l, maxverts = 256, *mark, tris;
-       float *vertex3f = NULL;
-       worldlight_t *e;
-       shadowmesh_t *mesh, *castmesh;
-       mleaf_t *leaf;
-       msurface_t *surf;
-       qbyte *pvs;
-       surfmesh_t *surfmesh;
+       // return if there's nothing at all to light
+       if (!numlightentities)
+               return;
+
+       R_Shadow_Stage_ActiveLight(rtlight);
+       c_rt_lights++;
 
-       if (radius < 15 || DotProduct(color, color) < 0.03)
+       usestencil = false;
+       if (numshadowentities && (!visible || r_shadow_visiblelighting.integer == 1) && gl_stencil && rtlight->shadow && (rtlight->isstatic ? r_rtworldshadows : r_rtdlightshadows))
        {
-               Con_Printf("R_Shadow_NewWorldLight: refusing to create a light too small/dim\n");
-               return;
+               usestencil = true;
+               R_Shadow_Stage_StencilShadowVolumes();
+               for (i = 0;i < numshadowentities;i++)
+                       R_Shadow_DrawEntityShadow(shadowentities[i], rtlight, numsurfaces, surfacelist);
        }
 
-       e = Mem_Alloc(r_shadow_mempool, sizeof(worldlight_t));
-       VectorCopy(origin, e->origin);
-       VectorCopy(color, e->light);
-       e->lightradius = radius;
-       e->style = style;
-       if (e->style < 0 || e->style >= MAX_LIGHTSTYLES)
+       if (numlightentities && !visible)
        {
-               Con_Printf("R_Shadow_NewWorldLight: invalid light style number %i, must be >= 0 and < %i\n", e->style, MAX_LIGHTSTYLES);
-               e->style = 0;
+               R_Shadow_Stage_Lighting(usestencil);
+               for (i = 0;i < numlightentities;i++)
+                       R_Shadow_DrawEntityLight(lightentities[i], rtlight, lightcolor, numsurfaces, surfacelist);
        }
-       e->castshadows = castshadow;
 
-       e->cullradius = e->lightradius;
-       for (k = 0;k < 3;k++)
+       if (numshadowentities && visible && r_shadow_visiblevolumes.integer > 0 && rtlight->shadow && (rtlight->isstatic ? r_rtworldshadows : r_rtdlightshadows))
        {
-               e->mins[k] = e->origin[k] - e->lightradius;
-               e->maxs[k] = e->origin[k] + e->lightradius;
+               R_Shadow_Stage_VisibleShadowVolumes();
+               for (i = 0;i < numshadowentities;i++)
+                       R_Shadow_DrawEntityShadow(shadowentities[i], rtlight, numsurfaces, surfacelist);
        }
 
-       e->next = r_shadow_worldlightchain;
-       r_shadow_worldlightchain = e;
-       if (cubemapname && cubemapname[0])
+       if (numlightentities && visible && r_shadow_visiblelighting.integer > 0)
        {
-               e->cubemapname = Mem_Alloc(r_shadow_mempool, strlen(cubemapname) + 1);
-               strcpy(e->cubemapname, cubemapname);
-               // FIXME: add cubemap loading (and don't load a cubemap twice)
+               R_Shadow_Stage_VisibleLighting(usestencil);
+               for (i = 0;i < numlightentities;i++)
+                       R_Shadow_DrawEntityLight(lightentities[i], rtlight, lightcolor, numsurfaces, surfacelist);
        }
-       if (cl.worldmodel)
-       {
-               castshadowcount++;
-               i = Mod_PointContents(e->origin, cl.worldmodel);
-               if (r_shadow_portallight.integer && i != CONTENTS_SOLID && i != CONTENTS_SKY)
-               {
-                       qbyte *byteleafpvs;
-                       qbyte *bytesurfacepvs;
+}
 
-                       byteleafpvs = Mem_Alloc(tempmempool, cl.worldmodel->numleafs + 1);
-                       bytesurfacepvs = Mem_Alloc(tempmempool, cl.worldmodel->numsurfaces);
+void R_ShadowVolumeLighting(qboolean visible)
+{
+       int lnum, flag;
+       dlight_t *light;
 
-                       Portal_Visibility(cl.worldmodel, e->origin, byteleafpvs, bytesurfacepvs, NULL, 0, true, RadiusFromBoundsAndOrigin(e->mins, e->maxs, e->origin));
+       if (r_refdef.worldmodel && strncmp(r_refdef.worldmodel->name, r_shadow_mapname, sizeof(r_shadow_mapname)))
+               R_Shadow_EditLights_Reload_f();
 
-                       for (i = 0, leaf = cl.worldmodel->leafs + 1;i < cl.worldmodel->numleafs;i++, leaf++)
-                               if (byteleafpvs[i+1] && BoxesOverlap(leaf->mins, leaf->maxs, e->mins, e->maxs))
-                                       leaf->worldnodeframe = castshadowcount;
+       R_Shadow_Stage_Begin();
 
-                       for (i = 0, surf = cl.worldmodel->surfaces;i < cl.worldmodel->numsurfaces;i++, surf++)
-                               if (bytesurfacepvs[i] && BoxesOverlap(surf->poly_mins, surf->poly_maxs, e->mins, e->maxs))
-                                       surf->castshadow = castshadowcount;
+       flag = r_rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
+       if (r_shadow_debuglight.integer >= 0)
+       {
+               for (lnum = 0, light = r_shadow_worldlightchain;light;lnum++, light = light->next)
+                       if (lnum == r_shadow_debuglight.integer && (light->flags & flag))
+                               R_DrawRTLight(&light->rtlight, visible);
+       }
+       else
+               for (lnum = 0, light = r_shadow_worldlightchain;light;lnum++, light = light->next)
+                       if (light->flags & flag)
+                               R_DrawRTLight(&light->rtlight, visible);
+       if (r_rtdlight)
+               for (lnum = 0, light = r_dlight;lnum < r_numdlights;lnum++, light++)
+                       R_DrawRTLight(&light->rtlight, visible);
+
+       R_Shadow_Stage_End();
+}
 
-                       Mem_Free(byteleafpvs);
-                       Mem_Free(bytesurfacepvs);
-               }
-               else
+//static char *suffix[6] = {"ft", "bk", "rt", "lf", "up", "dn"};
+typedef struct suffixinfo_s
+{
+       char *suffix;
+       qboolean flipx, flipy, flipdiagonal;
+}
+suffixinfo_t;
+static suffixinfo_t suffix[3][6] =
+{
+       {
+               {"px",   false, false, false},
+               {"nx",   false, false, false},
+               {"py",   false, false, false},
+               {"ny",   false, false, false},
+               {"pz",   false, false, false},
+               {"nz",   false, false, false}
+       },
+       {
+               {"posx", false, false, false},
+               {"negx", false, false, false},
+               {"posy", false, false, false},
+               {"negy", false, false, false},
+               {"posz", false, false, false},
+               {"negz", false, false, false}
+       },
+       {
+               {"rt",    true, false,  true},
+               {"lf",   false,  true,  true},
+               {"ft",    true,  true, false},
+               {"bk",   false, false, false},
+               {"up",    true, false,  true},
+               {"dn",    true, false,  true}
+       }
+};
+
+static int componentorder[4] = {0, 1, 2, 3};
+
+rtexture_t *R_Shadow_LoadCubemap(const char *basename)
+{
+       int i, j, cubemapsize;
+       qbyte *cubemappixels, *image_rgba;
+       rtexture_t *cubemaptexture;
+       char name[256];
+       // must start 0 so the first loadimagepixels has no requested width/height
+       cubemapsize = 0;
+       cubemappixels = NULL;
+       cubemaptexture = NULL;
+       // keep trying different suffix groups (posx, px, rt) until one loads
+       for (j = 0;j < 3 && !cubemappixels;j++)
+       {
+               // load the 6 images in the suffix group
+               for (i = 0;i < 6;i++)
                {
-                       leaf = Mod_PointInLeaf(origin, cl.worldmodel);
-                       pvs = Mod_LeafPVS(leaf, cl.worldmodel);
-                       for (i = 0, leaf = cl.worldmodel->leafs + 1;i < cl.worldmodel->numleafs;i++, leaf++)
+                       // generate an image name based on the base and and suffix
+                       dpsnprintf(name, sizeof(name), "%s%s", basename, suffix[j][i].suffix);
+                       // load it
+                       if ((image_rgba = loadimagepixels(name, false, cubemapsize, cubemapsize)))
                        {
-                               if (pvs[i >> 3] & (1 << (i & 7)) && BoxesOverlap(leaf->mins, leaf->maxs, e->mins, e->maxs))
+                               // an image loaded, make sure width and height are equal
+                               if (image_width == image_height)
                                {
-                                       leaf->worldnodeframe = castshadowcount;
-                                       for (j = 0, mark = leaf->firstmarksurface;j < leaf->nummarksurfaces;j++, mark++)
+                                       // if this is the first image to load successfully, allocate the cubemap memory
+                                       if (!cubemappixels && image_width >= 1)
                                        {
-                                               surf = cl.worldmodel->surfaces + *mark;
-                                               if (surf->castshadow != castshadowcount && BoxesOverlap(surf->poly_mins, surf->poly_maxs, e->mins, e->maxs))
-                                                       surf->castshadow = castshadowcount;
+                                               cubemapsize = image_width;
+                                               // note this clears to black, so unavailable sides are black
+                                               cubemappixels = Mem_Alloc(tempmempool, 6*cubemapsize*cubemapsize*4);
                                        }
+                                       // copy the image with any flipping needed by the suffix (px and posx types don't need flipping)
+                                       if (cubemappixels)
+                                               Image_CopyMux(cubemappixels+i*cubemapsize*cubemapsize*4, image_rgba, cubemapsize, cubemapsize, suffix[j][i].flipx, suffix[j][i].flipy, suffix[j][i].flipdiagonal, 4, 4, componentorder);
                                }
+                               else
+                                       Con_Printf("Cubemap image \"%s\" (%ix%i) is not square, OpenGL requires square cubemaps.\n", name, image_width, image_height);
+                               // free the image
+                               Mem_Free(image_rgba);
                        }
                }
+       }
+       // if a cubemap loaded, upload it
+       if (cubemappixels)
+       {
+               if (!r_shadow_filters_texturepool)
+                       r_shadow_filters_texturepool = R_AllocTexturePool();
+               cubemaptexture = R_LoadTextureCubeMap(r_shadow_filters_texturepool, basename, cubemapsize, cubemappixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
+               Mem_Free(cubemappixels);
+       }
+       else
+       {
+               Con_Printf("Failed to load Cubemap \"%s\", tried ", basename);
+               for (j = 0;j < 3;j++)
+                       for (i = 0;i < 6;i++)
+                               Con_Printf("%s\"%s%s.tga\"", j + i > 0 ? ", " : "", basename, suffix[j][i].suffix);
+               Con_Print(" and was unable to find any of them.\n");
+       }
+       return cubemaptexture;
+}
 
-               e->numleafs = 0;
-               for (i = 0, leaf = cl.worldmodel->leafs + 1;i < cl.worldmodel->numleafs;i++, leaf++)
-                       if (leaf->worldnodeframe == castshadowcount)
-                               e->numleafs++;
-               e->numsurfaces = 0;
-               for (i = 0, surf = cl.worldmodel->surfaces + cl.worldmodel->firstmodelsurface;i < cl.worldmodel->nummodelsurfaces;i++, surf++)
-                       if (surf->castshadow == castshadowcount)
-                               e->numsurfaces++;
-
-               if (e->numleafs)
-                       e->leafs = Mem_Alloc(r_shadow_mempool, e->numleafs * sizeof(mleaf_t *));
-               if (e->numsurfaces)
-                       e->surfaces = Mem_Alloc(r_shadow_mempool, e->numsurfaces * sizeof(msurface_t *));
-               e->numleafs = 0;
-               for (i = 0, leaf = cl.worldmodel->leafs + 1;i < cl.worldmodel->numleafs;i++, leaf++)
-                       if (leaf->worldnodeframe == castshadowcount)
-                               e->leafs[e->numleafs++] = leaf;
-               e->numsurfaces = 0;
-               for (i = 0, surf = cl.worldmodel->surfaces + cl.worldmodel->firstmodelsurface;i < cl.worldmodel->nummodelsurfaces;i++, surf++)
-                       if (surf->castshadow == castshadowcount)
-                               e->surfaces[e->numsurfaces++] = surf;
-
-               // find bounding box of lit leafs
-               VectorCopy(e->origin, e->mins);
-               VectorCopy(e->origin, e->maxs);
-               for (j = 0;j < e->numleafs;j++)
-               {
-                       leaf = e->leafs[j];
-                       for (k = 0;k < 3;k++)
-                       {
-                               if (e->mins[k] > leaf->mins[k]) e->mins[k] = leaf->mins[k];
-                               if (e->maxs[k] < leaf->maxs[k]) e->maxs[k] = leaf->maxs[k];
-                       }
-               }
+rtexture_t *R_Shadow_Cubemap(const char *basename)
+{
+       int i;
+       for (i = 0;i < numcubemaps;i++)
+               if (!strcasecmp(cubemaps[i].basename, basename))
+                       return cubemaps[i].texture;
+       if (i >= MAX_CUBEMAPS)
+               return r_texture_whitecube;
+       numcubemaps++;
+       strcpy(cubemaps[i].basename, basename);
+       cubemaps[i].texture = R_Shadow_LoadCubemap(cubemaps[i].basename);
+       if (!cubemaps[i].texture)
+               cubemaps[i].texture = r_texture_whitecube;
+       return cubemaps[i].texture;
+}
 
-               for (k = 0;k < 3;k++)
-               {
-                       if (e->mins[k] < e->origin[k] - e->lightradius) e->mins[k] = e->origin[k] - e->lightradius;
-                       if (e->maxs[k] > e->origin[k] + e->lightradius) e->maxs[k] = e->origin[k] + e->lightradius;
-               }
-               e->cullradius = RadiusFromBoundsAndOrigin(e->mins, e->maxs, e->origin);
+void R_Shadow_FreeCubemaps(void)
+{
+       numcubemaps = 0;
+       R_FreeTexturePool(&r_shadow_filters_texturepool);
+}
 
-               if (e->castshadows)
-               {
-                       castshadowcount++;
-                       for (j = 0;j < e->numsurfaces;j++)
-                       {
-                               surf = e->surfaces[j];
-                               if (surf->flags & SURF_SHADOWCAST)
-                               {
-                                       surf->castshadow = castshadowcount;
-                                       if (maxverts < surf->poly_numverts)
-                                               maxverts = surf->poly_numverts;
-                               }
-                       }
-                       e->shadowvolume = Mod_ShadowMesh_Begin(r_shadow_mempool, 32768);
-                       // make a mesh to cast a shadow volume from
-                       castmesh = Mod_ShadowMesh_Begin(r_shadow_mempool, 32768);
-                       for (j = 0;j < e->numsurfaces;j++)
-                               if (e->surfaces[j]->castshadow == castshadowcount)
-                                       for (surfmesh = e->surfaces[j]->mesh;surfmesh;surfmesh = surfmesh->chain)
-                                               Mod_ShadowMesh_AddMesh(r_shadow_mempool, castmesh, surfmesh->numverts, surfmesh->vertex3f, surfmesh->numtriangles, surfmesh->element3i);
-                       castmesh = Mod_ShadowMesh_Finish(r_shadow_mempool, castmesh);
-
-                       // cast shadow volume from castmesh
-                       for (mesh = castmesh;mesh;mesh = mesh->next)
-                       {
-                               R_Shadow_ResizeTriangleFacingLight(castmesh->numtriangles);
-                               R_Shadow_ResizeShadowElements(castmesh->numtriangles);
+dlight_t *R_Shadow_NewWorldLight(void)
+{
+       dlight_t *light;
+       light = Mem_Alloc(r_shadow_mempool, sizeof(dlight_t));
+       light->next = r_shadow_worldlightchain;
+       r_shadow_worldlightchain = light;
+       return light;
+}
 
-                               if (maxverts < castmesh->numverts * 2)
-                               {
-                                       maxverts = castmesh->numverts * 2;
-                                       if (vertex3f)
-                                               Mem_Free(vertex3f);
-                                       vertex3f = NULL;
-                               }
-                               if (vertex3f == NULL && maxverts > 0)
-                                       vertex3f = Mem_Alloc(r_shadow_mempool, maxverts * sizeof(float[3]));
-
-                               // now that we have the buffers big enough, construct shadow volume mesh
-                               memcpy(vertex3f, castmesh->vertex3f, castmesh->numverts * sizeof(float[3]));
-                               tris = R_Shadow_MakeTriangleShadowFlags_Vertex3f(castmesh->element3i, vertex3f, castmesh->numtriangles, trianglefacinglight, trianglefacinglightlist, e->origin);
-                               tris = R_Shadow_BuildShadowVolume(castmesh->element3i, castmesh->neighbor3i, castmesh->numverts, trianglefacinglight, trianglefacinglightlist, tris, shadowelements, vertex3f, e->origin, r_shadow_projectdistance.value);
-                               // add the constructed shadow volume mesh
-                               Mod_ShadowMesh_AddMesh(r_shadow_mempool, e->shadowvolume, castmesh->numverts, vertex3f, tris, shadowelements);
-                       }
-                       if (vertex3f)
-                               Mem_Free(vertex3f);
-                       vertex3f = NULL;
-                       // we're done with castmesh now
-                       Mod_ShadowMesh_Free(castmesh);
-                       e->shadowvolume = Mod_ShadowMesh_Finish(r_shadow_mempool, e->shadowvolume);
-                       for (l = 0, mesh = e->shadowvolume;mesh;mesh = mesh->next)
-                               l += mesh->numtriangles;
-                       Con_Printf("static shadow volume built containing %i triangles\n", l);
-               }
+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)
+{
+       VectorCopy(origin, light->origin);
+       light->angles[0] = angles[0] - 360 * floor(angles[0] / 360);
+       light->angles[1] = angles[1] - 360 * floor(angles[1] / 360);
+       light->angles[2] = angles[2] - 360 * floor(angles[2] / 360);
+       light->color[0] = max(color[0], 0);
+       light->color[1] = max(color[1], 0);
+       light->color[2] = max(color[2], 0);
+       light->radius = max(radius, 0);
+       light->style = style;
+       if (light->style < 0 || light->style >= MAX_LIGHTSTYLES)
+       {
+               Con_Printf("R_Shadow_NewWorldLight: invalid light style number %i, must be >= 0 and < %i\n", light->style, MAX_LIGHTSTYLES);
+               light->style = 0;
        }
-       Con_Printf("%f %f %f, %f %f %f, %f, %f, %d, %d\n", e->mins[0], e->mins[1], e->mins[2], e->maxs[0], e->maxs[1], e->maxs[2], e->cullradius, e->lightradius, e->numleafs, e->numsurfaces);
+       light->shadow = shadowenable;
+       light->corona = corona;
+       if (!cubemapname)
+               cubemapname = "";
+       strlcpy(light->cubemapname, cubemapname, sizeof(light->cubemapname));
+       light->coronasizescale = coronasizescale;
+       light->ambientscale = ambientscale;
+       light->diffusescale = diffusescale;
+       light->specularscale = specularscale;
+       light->flags = flags;
+       Matrix4x4_CreateFromQuakeEntity(&light->matrix, light->origin[0], light->origin[1], light->origin[2], light->angles[0], light->angles[1], light->angles[2], 1);
+
+       R_RTLight_UpdateFromDLight(&light->rtlight, light, true);
 }
 
-void R_Shadow_FreeWorldLight(worldlight_t *light)
+void R_Shadow_FreeWorldLight(dlight_t *light)
 {
-       worldlight_t **lightpointer;
+       dlight_t **lightpointer;
+       R_RTLight_Uncompile(&light->rtlight);
        for (lightpointer = &r_shadow_worldlightchain;*lightpointer && *lightpointer != light;lightpointer = &(*lightpointer)->next);
        if (*lightpointer != light)
                Sys_Error("R_Shadow_FreeWorldLight: light not linked into chain\n");
        *lightpointer = light->next;
-       if (light->cubemapname)
-               Mem_Free(light->cubemapname);
-       if (light->shadowvolume)
-               Mod_ShadowMesh_Free(light->shadowvolume);
-       if (light->surfaces)
-               Mem_Free(light->surfaces);
-       if (light->leafs)
-               Mem_Free(light->leafs);
        Mem_Free(light);
 }
 
@@ -1896,9 +3197,10 @@ void R_Shadow_ClearWorldLights(void)
        while (r_shadow_worldlightchain)
                R_Shadow_FreeWorldLight(r_shadow_worldlightchain);
        r_shadow_selectedlight = NULL;
+       R_Shadow_FreeCubemaps();
 }
 
-void R_Shadow_SelectLight(worldlight_t *light)
+void R_Shadow_SelectLight(dlight_t *light)
 {
        if (r_shadow_selectedlight)
                r_shadow_selectedlight->selected = false;
@@ -1907,85 +3209,57 @@ void R_Shadow_SelectLight(worldlight_t *light)
                r_shadow_selectedlight->selected = true;
 }
 
-
-void R_DrawLightSprite(int texnum, const vec3_t origin, vec_t scale, float cr, float cg, float cb, float ca)
-{
-       rmeshstate_t m;
-       float diff[3];
-
-       if (fogenabled)
-       {
-               VectorSubtract(origin, r_origin, diff);
-               ca *= 1 - exp(fogdensity/DotProduct(diff,diff));
-       }
-
-       memset(&m, 0, sizeof(m));
-       m.blendfunc1 = GL_SRC_ALPHA;
-       m.blendfunc2 = GL_ONE;
-       m.tex[0] = texnum;
-       R_Mesh_Matrix(&r_identitymatrix);
-       R_Mesh_State(&m);
-
-       GL_Color(cr * r_colorscale, cg * r_colorscale, cb * r_colorscale, ca);
-       R_DrawSpriteMesh(origin, vright, vup, scale, -scale, -scale, scale);
-}
-
 void R_Shadow_DrawCursorCallback(const void *calldata1, int calldata2)
 {
-       cachepic_t *pic;
-       pic = Draw_CachePic("gfx/crosshair1.tga");
-       if (pic)
-               R_DrawLightSprite(R_GetTexture(pic->tex), r_editlights_cursorlocation, r_editlights_cursorgrid.value * 0.5f, 1, 1, 1, 0.5);
+       float scale = r_editlights_cursorgrid.value * 0.5f;
+       R_DrawSprite(GL_SRC_ALPHA, GL_ONE, lighttextures[0], false, r_editlights_cursorlocation, r_viewright, r_viewup, scale, -scale, -scale, scale, 1, 1, 1, 0.5f);
 }
 
 void R_Shadow_DrawLightSpriteCallback(const void *calldata1, int calldata2)
 {
        float intensity;
-       const worldlight_t *light;
+       const dlight_t *light;
        light = calldata1;
        intensity = 0.5;
        if (light->selected)
                intensity = 0.75 + 0.25 * sin(realtime * M_PI * 4.0);
-       if (light->shadowvolume)
-               R_DrawLightSprite(calldata2, light->origin, 8, intensity, intensity, intensity, 0.5);
-       else
-               R_DrawLightSprite(calldata2, light->origin, 8, intensity * 0.5, intensity * 0.5, intensity * 0.5, 0.5);
+       if (!light->shadow)
+               intensity *= 0.5f;
+       R_DrawSprite(GL_SRC_ALPHA, GL_ONE, lighttextures[calldata2], false, light->origin, r_viewright, r_viewup, 8, -8, -8, 8, intensity, intensity, intensity, 0.5);
 }
 
 void R_Shadow_DrawLightSprites(void)
 {
-       int i, texnums[5];
+       int i;
        cachepic_t *pic;
-       worldlight_t *light;
+       dlight_t *light;
 
        for (i = 0;i < 5;i++)
        {
-               pic = Draw_CachePic(va("gfx/crosshair%i.tga", i + 1));
-               if (pic)
-                       texnums[i] = R_GetTexture(pic->tex);
-               else
-                       texnums[i] = 0;
+               lighttextures[i] = NULL;
+               if ((pic = Draw_CachePic(va("gfx/crosshair%i.tga", i + 1), true)))
+                       lighttextures[i] = pic->tex;
        }
 
-       for (light = r_shadow_worldlightchain;light;light = light->next)
-               R_MeshQueue_AddTransparent(light->origin, R_Shadow_DrawLightSpriteCallback, light, texnums[((int) light) % 5]);
+       for (i = 0, light = r_shadow_worldlightchain;light;i++, light = light->next)
+               R_MeshQueue_AddTransparent(light->origin, R_Shadow_DrawLightSpriteCallback, light, i % 5);
        R_MeshQueue_AddTransparent(r_editlights_cursorlocation, R_Shadow_DrawCursorCallback, NULL, 0);
 }
 
 void R_Shadow_SelectLightInView(void)
 {
        float bestrating, rating, temp[3];
-       worldlight_t *best, *light;
+       dlight_t *best, *light;
        best = NULL;
        bestrating = 0;
        for (light = r_shadow_worldlightchain;light;light = light->next)
        {
-               VectorSubtract(light->origin, r_refdef.vieworg, temp);
-               rating = (DotProduct(temp, vpn) / sqrt(DotProduct(temp, temp)));
+               VectorSubtract(light->origin, r_vieworigin, temp);
+               rating = (DotProduct(temp, r_viewforward) / sqrt(DotProduct(temp, temp)));
                if (rating >= 0.95)
                {
                        rating /= (1 + 0.0625f * sqrt(DotProduct(temp, temp)));
-                       if (bestrating < rating && CL_TraceLine(light->origin, r_refdef.vieworg, NULL, NULL, 0, true, NULL) == 1.0f)
+                       if (bestrating < rating && CL_TraceBox(light->origin, vec3_origin, vec3_origin, r_vieworigin, true, NULL, SUPERCONTENTS_SOLID, false).fraction == 1.0f)
                        {
                                bestrating = rating;
                                best = light;
@@ -1997,17 +3271,17 @@ void R_Shadow_SelectLightInView(void)
 
 void R_Shadow_LoadWorldLights(void)
 {
-       int n, a, style, shadow;
-       char name[MAX_QPATH], cubemapname[MAX_QPATH], *lightsstring, *s, *t;
-       float origin[3], radius, color[3];
-       if (cl.worldmodel == NULL)
+       int n, a, style, shadow, flags;
+       char tempchar, *lightsstring, *s, *t, name[MAX_QPATH], cubemapname[MAX_QPATH];
+       float origin[3], radius, color[3], angles[3], corona, coronasizescale, ambientscale, diffusescale, specularscale;
+       if (r_refdef.worldmodel == NULL)
        {
-               Con_Printf("No map loaded.\n");
+               Con_Print("No map loaded.\n");
                return;
        }
-       FS_StripExtension(cl.worldmodel->name, name);
-       strcat(name, ".rtlights");
-       lightsstring = FS_LoadFile(name, false);
+       FS_StripExtension (r_refdef.worldmodel->name, name, sizeof (name));
+       strlcat (name, ".rtlights", sizeof (name));
+       lightsstring = (char *)FS_LoadFile(name, tempmempool, false);
        if (lightsstring)
        {
                s = lightsstring;
@@ -2015,11 +3289,27 @@ void R_Shadow_LoadWorldLights(void)
                while (*s)
                {
                        t = s;
-                       while (*s && *s != '\n')
+                       /*
+                       shadow = true;
+                       for (;COM_Parse(t, true) && strcmp(
+                       if (COM_Parse(t, true))
+                       {
+                               if (com_token[0] == '!')
+                               {
+                                       shadow = false;
+                                       origin[0] = atof(com_token+1);
+                               }
+                               else
+                                       origin[0] = atof(com_token);
+                               if (Com_Parse(t
+                       }
+                       */
+                       t = s;
+                       while (*s && *s != '\n' && *s != '\r')
                                s++;
                        if (!*s)
                                break;
-                       *s = 0;
+                       tempchar = *s;
                        shadow = true;
                        // check for modifier flags
                        if (*t == '!')
@@ -2027,19 +3317,41 @@ void R_Shadow_LoadWorldLights(void)
                                shadow = false;
                                t++;
                        }
-                       a = sscanf(t, "%f %f %f %f %f %f %f %d %s", &origin[0], &origin[1], &origin[2], &radius, &color[0], &color[1], &color[2], &style, cubemapname);
-                       if (a < 9)
+                       *s = 0;
+                       a = sscanf(t, "%f %f %f %f %f %f %f %d %s %f %f %f %f %f %f %f %f %i", &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);
+                       *s = tempchar;
+                       if (a < 18)
+                               flags = LIGHTFLAG_REALTIMEMODE;
+                       if (a < 17)
+                               specularscale = 1;
+                       if (a < 16)
+                               diffusescale = 1;
+                       if (a < 15)
+                               ambientscale = 0;
+                       if (a < 14)
+                               coronasizescale = 0.25f;
+                       if (a < 13)
+                               VectorClear(angles);
+                       if (a < 10)
+                               corona = 0;
+                       if (a < 9 || !strcmp(cubemapname, "\"\""))
                                cubemapname[0] = 0;
-                       *s = '\n';
+                       // remove quotes on cubemapname
+                       if (cubemapname[0] == '"' && cubemapname[strlen(cubemapname) - 1] == '"')
+                       {
+                               cubemapname[strlen(cubemapname)-1] = 0;
+                               strcpy(cubemapname, cubemapname + 1);
+                       }
                        if (a < 8)
                        {
-                               Con_Printf("found %d parameters on line %i, should be 8 or 9 parameters (origin[0] origin[1] origin[2] radius color[0] color[1] color[2] style cubemapname)\n", a, n + 1);
+                               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);
                                break;
                        }
-                       VectorScale(color, r_editlights_rtlightscolorscale.value, color);
-                       radius *= r_editlights_rtlightssizescale.value;
-                       R_Shadow_NewWorldLight(origin, radius, color, style, cubemapname, shadow);
-                       s++;
+                       R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, angles, color, radius, corona, style, shadow, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
+                       if (*s == '\r')
+                               s++;
+                       if (*s == '\n')
+                               s++;
                        n++;
                }
                if (*s)
@@ -2050,30 +3362,35 @@ void R_Shadow_LoadWorldLights(void)
 
 void R_Shadow_SaveWorldLights(void)
 {
-       worldlight_t *light;
-       int bufchars, bufmaxchars;
+       dlight_t *light;
+       size_t bufchars, bufmaxchars;
        char *buf, *oldbuf;
        char name[MAX_QPATH];
        char line[1024];
        if (!r_shadow_worldlightchain)
                return;
-       if (cl.worldmodel == NULL)
+       if (r_refdef.worldmodel == NULL)
        {
-               Con_Printf("No map loaded.\n");
+               Con_Print("No map loaded.\n");
                return;
        }
-       FS_StripExtension(cl.worldmodel->name, name);
-       strcat(name, ".rtlights");
+       FS_StripExtension (r_refdef.worldmodel->name, name, sizeof (name));
+       strlcat (name, ".rtlights", sizeof (name));
        bufchars = bufmaxchars = 0;
        buf = NULL;
        for (light = r_shadow_worldlightchain;light;light = light->next)
        {
-               sprintf(line, "%s%g %g %g %g %g %g %g %d %s\n", light->castshadows ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->lightradius / r_editlights_rtlightssizescale.value, light->light[0] / r_editlights_rtlightscolorscale.value, light->light[1] / r_editlights_rtlightscolorscale.value, light->light[2] / r_editlights_rtlightscolorscale.value, light->style, light->cubemapname ? light->cubemapname : "");
+               if (light->coronasizescale != 0.25f || light->ambientscale != 0 || light->diffusescale != 1 || light->specularscale != 1 || light->flags != LIGHTFLAG_REALTIMEMODE)
+                       sprintf(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);
+               else if (light->cubemapname[0] || light->corona || light->angles[0] || light->angles[1] || light->angles[2])
+                       sprintf(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]);
+               else
+                       sprintf(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);
                if (bufchars + strlen(line) > bufmaxchars)
                {
                        bufmaxchars = bufchars + strlen(line) + 2048;
                        oldbuf = buf;
-                       buf = Mem_Alloc(r_shadow_mempool, bufmaxchars);
+                       buf = Mem_Alloc(tempmempool, bufmaxchars);
                        if (oldbuf)
                        {
                                if (bufchars)
@@ -2088,7 +3405,7 @@ void R_Shadow_SaveWorldLights(void)
                }
        }
        if (bufchars)
-               FS_WriteFile(name, buf, bufchars);
+               FS_WriteFile(name, buf, (fs_offset_t)bufchars);
        if (buf)
                Mem_Free(buf);
 }
@@ -2096,16 +3413,16 @@ void R_Shadow_SaveWorldLights(void)
 void R_Shadow_LoadLightsFile(void)
 {
        int n, a, style;
-       char name[MAX_QPATH], *lightsstring, *s, *t;
+       char tempchar, *lightsstring, *s, *t, name[MAX_QPATH];
        float origin[3], radius, color[3], subtract, spotdir[3], spotcone, falloff, distbias;
-       if (cl.worldmodel == NULL)
+       if (r_refdef.worldmodel == NULL)
        {
-               Con_Printf("No map loaded.\n");
+               Con_Print("No map loaded.\n");
                return;
        }
-       FS_StripExtension(cl.worldmodel->name, name);
-       strcat(name, ".lights");
-       lightsstring = FS_LoadFile(name, false);
+       FS_StripExtension (r_refdef.worldmodel->name, name, sizeof (name));
+       strlcat (name, ".lights", sizeof (name));
+       lightsstring = (char *)FS_LoadFile(name, tempmempool, false);
        if (lightsstring)
        {
                s = lightsstring;
@@ -2113,13 +3430,14 @@ void R_Shadow_LoadLightsFile(void)
                while (*s)
                {
                        t = s;
-                       while (*s && *s != '\n')
+                       while (*s && *s != '\n' && *s != '\r')
                                s++;
                        if (!*s)
                                break;
+                       tempchar = *s;
                        *s = 0;
                        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);
-                       *s = '\n';
+                       *s = tempchar;
                        if (a < 14)
                        {
                                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);
@@ -2128,8 +3446,11 @@ void R_Shadow_LoadLightsFile(void)
                        radius = sqrt(DotProduct(color, color) / (falloff * falloff * 8192.0f * 8192.0f));
                        radius = bound(15, radius, 4096);
                        VectorScale(color, (2.0f / (8388608.0f)), color);
-                       R_Shadow_NewWorldLight(origin, radius, color, style, NULL, true);
-                       s++;
+                       R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, vec3_origin, color, radius, 0, style, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
+                       if (*s == '\r')
+                               s++;
+                       if (*s == '\n')
+                               s++;
                        n++;
                }
                if (*s)
@@ -2138,34 +3459,50 @@ void R_Shadow_LoadLightsFile(void)
        }
 }
 
+// tyrlite/hmap2 light types in the delay field
+typedef enum lighttype_e {LIGHTTYPE_MINUSX, LIGHTTYPE_RECIPX, LIGHTTYPE_RECIPXX, LIGHTTYPE_NONE, LIGHTTYPE_SUN, LIGHTTYPE_MINUSXX} lighttype_t;
+
 void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void)
 {
-       int entnum, style, islight;
-       char key[256], value[1024];
-       float origin[3], radius, color[3], light, scale, originhack[3], overridecolor[3];
+       int entnum, style, islight, skin, pflags, effects, type, n;
+       char *entfiledata;
        const char *data;
+       float origin[3], angles[3], radius, color[3], light[4], fadescale, lightscale, originhack[3], overridecolor[3], vec[4];
+       char key[256], value[1024];
 
-       if (cl.worldmodel == NULL)
+       if (r_refdef.worldmodel == NULL)
        {
-               Con_Printf("No map loaded.\n");
+               Con_Print("No map loaded.\n");
                return;
        }
-       data = cl.worldmodel->entities;
+       // try to load a .ent file first
+       FS_StripExtension (r_refdef.worldmodel->name, key, sizeof (key));
+       strlcat (key, ".ent", sizeof (key));
+       data = entfiledata = (char *)FS_LoadFile(key, tempmempool, true);
+       // and if that is not found, fall back to the bsp file entity string
+       if (!data)
+               data = r_refdef.worldmodel->brush.entities;
        if (!data)
                return;
-       for (entnum = 0;COM_ParseToken(&data) && com_token[0] == '{';entnum++)
+       for (entnum = 0;COM_ParseToken(&data, false) && com_token[0] == '{';entnum++)
        {
-               light = 0;
+               type = LIGHTTYPE_MINUSX;
                origin[0] = origin[1] = origin[2] = 0;
                originhack[0] = originhack[1] = originhack[2] = 0;
+               angles[0] = angles[1] = angles[2] = 0;
                color[0] = color[1] = color[2] = 1;
+               light[0] = light[1] = light[2] = 1;light[3] = 300;
                overridecolor[0] = overridecolor[1] = overridecolor[2] = 1;
-               scale = 1;
+               fadescale = 1;
+               lightscale = 1;
                style = 0;
+               skin = 0;
+               pflags = 0;
+               effects = 0;
                islight = false;
                while (1)
                {
-                       if (!COM_ParseToken(&data))
+                       if (!COM_ParseToken(&data, false))
                                break; // error
                        if (com_token[0] == '}')
                                break; // end of entity
@@ -2175,19 +3512,43 @@ void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void)
                                strcpy(key, com_token);
                        while (key[strlen(key)-1] == ' ') // remove trailing spaces
                                key[strlen(key)-1] = 0;
-                       if (!COM_ParseToken(&data))
+                       if (!COM_ParseToken(&data, false))
                                break; // error
                        strcpy(value, com_token);
 
                        // now that we have the key pair worked out...
                        if (!strcmp("light", key))
-                               light = atof(value);
+                       {
+                               n = sscanf(value, "%f %f %f %f", &vec[0], &vec[1], &vec[2], &vec[3]);
+                               if (n == 1)
+                               {
+                                       // quake
+                                       light[0] = vec[0] * (1.0f / 256.0f);
+                                       light[1] = vec[0] * (1.0f / 256.0f);
+                                       light[2] = vec[0] * (1.0f / 256.0f);
+                                       light[3] = vec[0];
+                               }
+                               else if (n == 4)
+                               {
+                                       // halflife
+                                       light[0] = vec[0] * (1.0f / 255.0f);
+                                       light[1] = vec[1] * (1.0f / 255.0f);
+                                       light[2] = vec[2] * (1.0f / 255.0f);
+                                       light[3] = vec[3];
+                               }
+                       }
+                       else if (!strcmp("delay", key))
+                               type = atoi(value);
                        else if (!strcmp("origin", key))
                                sscanf(value, "%f %f %f", &origin[0], &origin[1], &origin[2]);
+                       else if (!strcmp("angle", key))
+                               angles[0] = 0, angles[1] = atof(value), angles[2] = 0;
+                       else if (!strcmp("angles", key))
+                               sscanf(value, "%f %f %f", &angles[0], &angles[1], &angles[2]);
                        else if (!strcmp("color", key))
                                sscanf(value, "%f %f %f", &color[0], &color[1], &color[2]);
                        else if (!strcmp("wait", key))
-                               scale = atof(value);
+                               fadescale = atof(value);
                        else if (!strcmp("classname", key))
                        {
                                if (!strncmp(value, "light", 5))
@@ -2260,36 +3621,81 @@ void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void)
                        }
                        else if (!strcmp("style", key))
                                style = atoi(value);
+                       else if (r_refdef.worldmodel->type == mod_brushq3)
+                       {
+                               if (!strcmp("scale", key))
+                                       lightscale = atof(value);
+                               if (!strcmp("fade", key))
+                                       fadescale = atof(value);
+                       }
+                       else if (!strcmp("skin", key))
+                               skin = (int)atof(value);
+                       else if (!strcmp("pflags", key))
+                               pflags = (int)atof(value);
+                       else if (!strcmp("effects", key))
+                               effects = (int)atof(value);
+               }
+               if (!islight)
+                       continue;
+               if (lightscale <= 0)
+                       lightscale = 1;
+               if (fadescale <= 0)
+                       fadescale = 1;
+               if (color[0] == color[1] && color[0] == color[2])
+               {
+                       color[0] *= overridecolor[0];
+                       color[1] *= overridecolor[1];
+                       color[2] *= overridecolor[2];
+               }
+               radius = light[3] * r_editlights_quakelightsizescale.value * lightscale / fadescale;
+               color[0] = color[0] * light[0];
+               color[1] = color[1] * light[1];
+               color[2] = color[2] * light[2];
+               switch (type)
+               {
+               case LIGHTTYPE_MINUSX:
+                       break;
+               case LIGHTTYPE_RECIPX:
+                       radius *= 2;
+                       VectorScale(color, (1.0f / 16.0f), color);
+                       break;
+               case LIGHTTYPE_RECIPXX:
+                       radius *= 2;
+                       VectorScale(color, (1.0f / 16.0f), color);
+                       break;
+               default:
+               case LIGHTTYPE_NONE:
+                       break;
+               case LIGHTTYPE_SUN:
+                       break;
+               case LIGHTTYPE_MINUSXX:
+                       break;
                }
-               if (light <= 0 && islight)
-                       light = 300;
-               radius = min(light * r_editlights_quakelightsizescale.value / scale, 1048576);
-               light = sqrt(bound(0, light, 1048576)) * (1.0f / 16.0f);
-               if (color[0] == 1 && color[1] == 1 && color[2] == 1)
-                       VectorCopy(overridecolor, color);
-               VectorScale(color, light, color);
                VectorAdd(origin, originhack, origin);
-               if (radius >= 15)
-                       R_Shadow_NewWorldLight(origin, radius, color, style, NULL, true);
+               if (radius >= 1)
+                       R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, angles, color, radius, (pflags & PFLAGS_CORONA) != 0, style, (pflags & PFLAGS_NOSHADOW) == 0, skin >= 16 ? va("cubemaps/%i", skin) : NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
        }
+       if (entfiledata)
+               Mem_Free(entfiledata);
 }
 
 
 void R_Shadow_SetCursorLocationForView(void)
 {
-       vec_t dist, push, frac;
-       vec3_t dest, endpos, normal;
-       VectorMA(r_refdef.vieworg, r_editlights_cursordistance.value, vpn, dest);
-       frac = CL_TraceLine(r_refdef.vieworg, dest, endpos, normal, 0, true, NULL);
-       if (frac < 1)
+       vec_t dist, push;
+       vec3_t dest, endpos;
+       trace_t trace;
+       VectorMA(r_vieworigin, r_editlights_cursordistance.value, r_viewforward, dest);
+       trace = CL_TraceBox(r_vieworigin, vec3_origin, vec3_origin, dest, true, NULL, SUPERCONTENTS_SOLID, false);
+       if (trace.fraction < 1)
        {
-               dist = frac * r_editlights_cursordistance.value;
+               dist = trace.fraction * r_editlights_cursordistance.value;
                push = r_editlights_cursorpushback.value;
                if (push > dist)
                        push = dist;
                push = -push;
-               VectorMA(endpos, push, vpn, endpos);
-               VectorMA(endpos, r_editlights_cursorpushoff.value, normal, endpos);
+               VectorMA(trace.endpos, push, r_viewforward, endpos);
+               VectorMA(endpos, r_editlights_cursorpushoff.value, trace.plane.normal, endpos);
        }
        r_editlights_cursorlocation[0] = floor(endpos[0] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
        r_editlights_cursorlocation[1] = floor(endpos[1] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
@@ -2298,9 +3704,9 @@ void R_Shadow_SetCursorLocationForView(void)
 
 void R_Shadow_UpdateWorldLightSelection(void)
 {
-       R_Shadow_SetCursorLocationForView();
        if (r_editlights.integer)
        {
+               R_Shadow_SetCursorLocationForView();
                R_Shadow_SelectLightInView();
                R_Shadow_DrawLightSprites();
        }
@@ -2315,13 +3721,24 @@ void R_Shadow_EditLights_Clear_f(void)
 
 void R_Shadow_EditLights_Reload_f(void)
 {
-       r_shadow_reloadlights = true;
+       if (!r_refdef.worldmodel)
+               return;
+       strlcpy(r_shadow_mapname, r_refdef.worldmodel->name, sizeof(r_shadow_mapname));
+       R_Shadow_ClearWorldLights();
+       R_Shadow_LoadWorldLights();
+       if (r_shadow_worldlightchain == NULL)
+       {
+               R_Shadow_LoadLightsFile();
+               if (r_shadow_worldlightchain == NULL)
+                       R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite();
+       }
 }
 
 void R_Shadow_EditLights_Save_f(void)
 {
-       if (cl.worldmodel)
-               R_Shadow_SaveWorldLights();
+       if (!r_refdef.worldmodel)
+               return;
+       R_Shadow_SaveWorldLights();
 }
 
 void R_Shadow_EditLights_ImportLightEntitiesFromMap_f(void)
@@ -2341,48 +3758,57 @@ void R_Shadow_EditLights_Spawn_f(void)
        vec3_t color;
        if (!r_editlights.integer)
        {
-               Con_Printf("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
+               Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
                return;
        }
        if (Cmd_Argc() != 1)
        {
-               Con_Printf("r_editlights_spawn does not take parameters\n");
+               Con_Print("r_editlights_spawn does not take parameters\n");
                return;
        }
        color[0] = color[1] = color[2] = 1;
-       R_Shadow_NewWorldLight(r_editlights_cursorlocation, 200, color, 0, NULL, true);
+       R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), r_editlights_cursorlocation, vec3_origin, color, 200, 0, 0, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
 }
 
 void R_Shadow_EditLights_Edit_f(void)
 {
-       vec3_t origin, color;
-       vec_t radius;
-       int style, shadows;
+       vec3_t origin, angles, color;
+       vec_t radius, corona, coronasizescale, ambientscale, diffusescale, specularscale;
+       int style, shadows, flags, normalmode, realtimemode;
        char cubemapname[1024];
        if (!r_editlights.integer)
        {
-               Con_Printf("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
+               Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
                return;
        }
        if (!r_shadow_selectedlight)
        {
-               Con_Printf("No selected light.\n");
+               Con_Print("No selected light.\n");
                return;
        }
        VectorCopy(r_shadow_selectedlight->origin, origin);
-       radius = r_shadow_selectedlight->lightradius;
-       VectorCopy(r_shadow_selectedlight->light, color);
+       VectorCopy(r_shadow_selectedlight->angles, angles);
+       VectorCopy(r_shadow_selectedlight->color, color);
+       radius = r_shadow_selectedlight->radius;
        style = r_shadow_selectedlight->style;
        if (r_shadow_selectedlight->cubemapname)
                strcpy(cubemapname, r_shadow_selectedlight->cubemapname);
        else
                cubemapname[0] = 0;
-       shadows = r_shadow_selectedlight->castshadows;
+       shadows = r_shadow_selectedlight->shadow;
+       corona = r_shadow_selectedlight->corona;
+       coronasizescale = r_shadow_selectedlight->coronasizescale;
+       ambientscale = r_shadow_selectedlight->ambientscale;
+       diffusescale = r_shadow_selectedlight->diffusescale;
+       specularscale = r_shadow_selectedlight->specularscale;
+       flags = r_shadow_selectedlight->flags;
+       normalmode = (flags & LIGHTFLAG_NORMALMODE) != 0;
+       realtimemode = (flags & LIGHTFLAG_REALTIMEMODE) != 0;
        if (!strcmp(Cmd_Argv(1), "origin"))
        {
                if (Cmd_Argc() != 5)
                {
-                       Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
                        return;
                }
                origin[0] = atof(Cmd_Argv(2));
@@ -2393,7 +3819,7 @@ void R_Shadow_EditLights_Edit_f(void)
        {
                if (Cmd_Argc() != 3)
                {
-                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
                        return;
                }
                origin[0] = atof(Cmd_Argv(2));
@@ -2402,7 +3828,7 @@ void R_Shadow_EditLights_Edit_f(void)
        {
                if (Cmd_Argc() != 3)
                {
-                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
                        return;
                }
                origin[1] = atof(Cmd_Argv(2));
@@ -2411,7 +3837,7 @@ void R_Shadow_EditLights_Edit_f(void)
        {
                if (Cmd_Argc() != 3)
                {
-                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
                        return;
                }
                origin[2] = atof(Cmd_Argv(2));
@@ -2420,7 +3846,7 @@ void R_Shadow_EditLights_Edit_f(void)
        {
                if (Cmd_Argc() != 5)
                {
-                       Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
                        return;
                }
                origin[0] += atof(Cmd_Argv(2));
@@ -2431,7 +3857,7 @@ void R_Shadow_EditLights_Edit_f(void)
        {
                if (Cmd_Argc() != 3)
                {
-                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
                        return;
                }
                origin[0] += atof(Cmd_Argv(2));
@@ -2440,7 +3866,7 @@ void R_Shadow_EditLights_Edit_f(void)
        {
                if (Cmd_Argc() != 3)
                {
-                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
                        return;
                }
                origin[1] += atof(Cmd_Argv(2));
@@ -2449,16 +3875,54 @@ void R_Shadow_EditLights_Edit_f(void)
        {
                if (Cmd_Argc() != 3)
                {
-                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
                        return;
                }
                origin[2] += atof(Cmd_Argv(2));
        }
+       else if (!strcmp(Cmd_Argv(1), "angles"))
+       {
+               if (Cmd_Argc() != 5)
+               {
+                       Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
+                       return;
+               }
+               angles[0] = atof(Cmd_Argv(2));
+               angles[1] = atof(Cmd_Argv(3));
+               angles[2] = atof(Cmd_Argv(4));
+       }
+       else if (!strcmp(Cmd_Argv(1), "anglesx"))
+       {
+               if (Cmd_Argc() != 3)
+               {
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
+                       return;
+               }
+               angles[0] = atof(Cmd_Argv(2));
+       }
+       else if (!strcmp(Cmd_Argv(1), "anglesy"))
+       {
+               if (Cmd_Argc() != 3)
+               {
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
+                       return;
+               }
+               angles[1] = atof(Cmd_Argv(2));
+       }
+       else if (!strcmp(Cmd_Argv(1), "anglesz"))
+       {
+               if (Cmd_Argc() != 3)
+               {
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
+                       return;
+               }
+               angles[2] = atof(Cmd_Argv(2));
+       }
        else if (!strcmp(Cmd_Argv(1), "color"))
        {
                if (Cmd_Argc() != 5)
                {
-                       Con_Printf("usage: r_editlights_edit %s red green blue\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s red green blue\n", Cmd_Argv(1));
                        return;
                }
                color[0] = atof(Cmd_Argv(2));
@@ -2469,25 +3933,55 @@ void R_Shadow_EditLights_Edit_f(void)
        {
                if (Cmd_Argc() != 3)
                {
-                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
                        return;
                }
                radius = atof(Cmd_Argv(2));
        }
-       else if (Cmd_Argc() == 3 && !strcmp(Cmd_Argv(1), "style"))
+       else if (!strcmp(Cmd_Argv(1), "colorscale"))
+       {
+               if (Cmd_Argc() == 3)
+               {
+                       double scale = atof(Cmd_Argv(2));
+                       color[0] *= scale;
+                       color[1] *= scale;
+                       color[2] *= scale;
+               }
+               else
+               {
+                       if (Cmd_Argc() != 5)
+                       {
+                               Con_Printf("usage: r_editlights_edit %s red green blue  (OR grey instead of red green blue)\n", Cmd_Argv(1));
+                               return;
+                       }
+                       color[0] *= atof(Cmd_Argv(2));
+                       color[1] *= atof(Cmd_Argv(3));
+                       color[2] *= atof(Cmd_Argv(4));
+               }
+       }
+       else if (!strcmp(Cmd_Argv(1), "radiusscale") || !strcmp(Cmd_Argv(1), "sizescale"))
+       {
+               if (Cmd_Argc() != 3)
+               {
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
+                       return;
+               }
+               radius *= atof(Cmd_Argv(2));
+       }
+       else if (!strcmp(Cmd_Argv(1), "style"))
        {
                if (Cmd_Argc() != 3)
                {
-                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
                        return;
                }
                style = atoi(Cmd_Argv(2));
        }
-       else if (Cmd_Argc() == 3 && !strcmp(Cmd_Argv(1), "cubemap"))
+       else if (!strcmp(Cmd_Argv(1), "cubemap"))
        {
                if (Cmd_Argc() > 3)
                {
-                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
                        return;
                }
                if (Cmd_Argc() == 3)
@@ -2495,83 +3989,299 @@ void R_Shadow_EditLights_Edit_f(void)
                else
                        cubemapname[0] = 0;
        }
-       else if (Cmd_Argc() == 3 && !strcmp(Cmd_Argv(1), "shadows"))
+       else if (!strcmp(Cmd_Argv(1), "shadows"))
        {
                if (Cmd_Argc() != 3)
                {
-                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(0));
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
                        return;
                }
                shadows = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
        }
+       else if (!strcmp(Cmd_Argv(1), "corona"))
+       {
+               if (Cmd_Argc() != 3)
+               {
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
+                       return;
+               }
+               corona = atof(Cmd_Argv(2));
+       }
+       else if (!strcmp(Cmd_Argv(1), "coronasize"))
+       {
+               if (Cmd_Argc() != 3)
+               {
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
+                       return;
+               }
+               coronasizescale = atof(Cmd_Argv(2));
+       }
+       else if (!strcmp(Cmd_Argv(1), "ambient"))
+       {
+               if (Cmd_Argc() != 3)
+               {
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
+                       return;
+               }
+               ambientscale = atof(Cmd_Argv(2));
+       }
+       else if (!strcmp(Cmd_Argv(1), "diffuse"))
+       {
+               if (Cmd_Argc() != 3)
+               {
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
+                       return;
+               }
+               diffusescale = atof(Cmd_Argv(2));
+       }
+       else if (!strcmp(Cmd_Argv(1), "specular"))
+       {
+               if (Cmd_Argc() != 3)
+               {
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
+                       return;
+               }
+               specularscale = atof(Cmd_Argv(2));
+       }
+       else if (!strcmp(Cmd_Argv(1), "normalmode"))
+       {
+               if (Cmd_Argc() != 3)
+               {
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
+                       return;
+               }
+               normalmode = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
+       }
+       else if (!strcmp(Cmd_Argv(1), "realtimemode"))
+       {
+               if (Cmd_Argc() != 3)
+               {
+                       Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
+                       return;
+               }
+               realtimemode = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
+       }
        else
        {
-               Con_Printf("usage: r_editlights_edit [property] [value]\n");
-               Con_Printf("Selected light's properties:\n");
-               Con_Printf("Origin: %f %f %f\n", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);
-               Con_Printf("Radius: %f\n", r_shadow_selectedlight->lightradius);
-               Con_Printf("Color: %f %f %f\n", r_shadow_selectedlight->light[0], r_shadow_selectedlight->light[1], r_shadow_selectedlight->light[2]);
-               Con_Printf("Style: %i\n", r_shadow_selectedlight->style);
-               Con_Printf("Cubemap: %s\n", r_shadow_selectedlight->cubemapname);
-               Con_Printf("Shadows: %s\n", r_shadow_selectedlight->castshadows ? "yes" : "no");
+               Con_Print("usage: r_editlights_edit [property] [value]\n");
+               Con_Print("Selected light's properties:\n");
+               Con_Printf("Origin       : %f %f %f\n", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);
+               Con_Printf("Angles       : %f %f %f\n", r_shadow_selectedlight->angles[0], r_shadow_selectedlight->angles[1], r_shadow_selectedlight->angles[2]);
+               Con_Printf("Color        : %f %f %f\n", r_shadow_selectedlight->color[0], r_shadow_selectedlight->color[1], r_shadow_selectedlight->color[2]);
+               Con_Printf("Radius       : %f\n", r_shadow_selectedlight->radius);
+               Con_Printf("Corona       : %f\n", r_shadow_selectedlight->corona);
+               Con_Printf("Style        : %i\n", r_shadow_selectedlight->style);
+               Con_Printf("Shadows      : %s\n", r_shadow_selectedlight->shadow ? "yes" : "no");
+               Con_Printf("Cubemap      : %s\n", r_shadow_selectedlight->cubemapname);
+               Con_Printf("CoronaSize   : %f\n", r_shadow_selectedlight->coronasizescale);
+               Con_Printf("Ambient      : %f\n", r_shadow_selectedlight->ambientscale);
+               Con_Printf("Diffuse      : %f\n", r_shadow_selectedlight->diffusescale);
+               Con_Printf("Specular     : %f\n", r_shadow_selectedlight->specularscale);
+               Con_Printf("NormalMode   : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_NORMALMODE) ? "yes" : "no");
+               Con_Printf("RealTimeMode : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_REALTIMEMODE) ? "yes" : "no");
                return;
        }
-       R_Shadow_FreeWorldLight(r_shadow_selectedlight);
-       r_shadow_selectedlight = NULL;
-       R_Shadow_NewWorldLight(origin, radius, color, style, cubemapname, shadows);
+       flags = (normalmode ? LIGHTFLAG_NORMALMODE : 0) | (realtimemode ? LIGHTFLAG_REALTIMEMODE : 0);
+       R_Shadow_UpdateWorldLight(r_shadow_selectedlight, origin, angles, color, radius, corona, style, shadows, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
+}
+
+void R_Shadow_EditLights_EditAll_f(void)
+{
+       dlight_t *light;
+
+       if (!r_editlights.integer)
+       {
+               Con_Print("Cannot edit lights when not in editing mode. Set r_editlights to 1.\n");
+               return;
+       }
+
+       for (light = r_shadow_worldlightchain;light;light = light->next)
+       {
+               R_Shadow_SelectLight(light);
+               R_Shadow_EditLights_Edit_f();
+       }
 }
 
-extern int con_vislines;
 void R_Shadow_EditLights_DrawSelectedLightProperties(void)
 {
+       int lightnumber, lightcount;
+       dlight_t *light;
        float x, y;
        char temp[256];
-       if (r_shadow_selectedlight == NULL)
+       if (!r_editlights.integer)
                return;
        x = 0;
        y = con_vislines;
-       sprintf(temp, "Light properties");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
-       sprintf(temp, "Origin %f %f %f", 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);y += 8;
-       sprintf(temp, "Radius %f", r_shadow_selectedlight->lightradius);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
-       sprintf(temp, "Color %f %f %f", r_shadow_selectedlight->light[0], r_shadow_selectedlight->light[1], r_shadow_selectedlight->light[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
-       sprintf(temp, "Style %i", r_shadow_selectedlight->style);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
-       sprintf(temp, "Cubemap %s", r_shadow_selectedlight->cubemapname);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
-       sprintf(temp, "Shadows %s", r_shadow_selectedlight->castshadows ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
+       lightnumber = -1;
+       lightcount = 0;
+       for (lightcount = 0, light = r_shadow_worldlightchain;light;lightcount++, light = light->next)
+               if (light == r_shadow_selectedlight)
+                       lightnumber = lightcount;
+       sprintf(temp, "Cursor  %f %f %f  Total Lights %i", r_editlights_cursorlocation[0], r_editlights_cursorlocation[1], r_editlights_cursorlocation[2], lightcount);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
+       if (r_shadow_selectedlight == NULL)
+               return;
+       sprintf(temp, "Light #%i properties", lightnumber);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
+       sprintf(temp, "Origin       : %f %f %f\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);y += 8;
+       sprintf(temp, "Angles       : %f %f %f\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);y += 8;
+       sprintf(temp, "Color        : %f %f %f\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);y += 8;
+       sprintf(temp, "Radius       : %f\n", r_shadow_selectedlight->radius);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
+       sprintf(temp, "Corona       : %f\n", r_shadow_selectedlight->corona);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
+       sprintf(temp, "Style        : %i\n", r_shadow_selectedlight->style);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
+       sprintf(temp, "Shadows      : %s\n", r_shadow_selectedlight->shadow ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
+       sprintf(temp, "Cubemap      : %s\n", r_shadow_selectedlight->cubemapname);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
+       sprintf(temp, "CoronaSize   : %f\n", r_shadow_selectedlight->coronasizescale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
+       sprintf(temp, "Ambient      : %f\n", r_shadow_selectedlight->ambientscale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
+       sprintf(temp, "Diffuse      : %f\n", r_shadow_selectedlight->diffusescale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
+       sprintf(temp, "Specular     : %f\n", r_shadow_selectedlight->specularscale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
+       sprintf(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);y += 8;
+       sprintf(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);y += 8;
 }
 
 void R_Shadow_EditLights_ToggleShadow_f(void)
 {
        if (!r_editlights.integer)
        {
-               Con_Printf("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
+               Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
                return;
        }
        if (!r_shadow_selectedlight)
        {
-               Con_Printf("No selected light.\n");
+               Con_Print("No selected light.\n");
                return;
        }
-       R_Shadow_NewWorldLight(r_shadow_selectedlight->origin, r_shadow_selectedlight->lightradius, r_shadow_selectedlight->light, r_shadow_selectedlight->style, r_shadow_selectedlight->cubemapname, !r_shadow_selectedlight->castshadows);
-       R_Shadow_FreeWorldLight(r_shadow_selectedlight);
-       r_shadow_selectedlight = NULL;
+       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);
+}
+
+void R_Shadow_EditLights_ToggleCorona_f(void)
+{
+       if (!r_editlights.integer)
+       {
+               Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
+               return;
+       }
+       if (!r_shadow_selectedlight)
+       {
+               Con_Print("No selected light.\n");
+               return;
+       }
+       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);
 }
 
 void R_Shadow_EditLights_Remove_f(void)
 {
        if (!r_editlights.integer)
        {
-               Con_Printf("Cannot remove light when not in editing mode.  Set r_editlights to 1.\n");
+               Con_Print("Cannot remove light when not in editing mode.  Set r_editlights to 1.\n");
                return;
        }
        if (!r_shadow_selectedlight)
        {
-               Con_Printf("No selected light.\n");
+               Con_Print("No selected light.\n");
                return;
        }
        R_Shadow_FreeWorldLight(r_shadow_selectedlight);
        r_shadow_selectedlight = NULL;
 }
 
+void R_Shadow_EditLights_Help_f(void)
+{
+       Con_Print(
+"Documentation on r_editlights system:\n"
+"Settings:\n"
+"r_editlights : enable/disable editing mode\n"
+"r_editlights_cursordistance : maximum distance of cursor from eye\n"
+"r_editlights_cursorpushback : push back cursor this far from surface\n"
+"r_editlights_cursorpushoff : push cursor off surface this far\n"
+"r_editlights_cursorgrid : snap cursor to grid of this size\n"
+"r_editlights_quakelightsizescale : imported quake light entity size scaling\n"
+"Commands:\n"
+"r_editlights_help : this help\n"
+"r_editlights_clear : remove all lights\n"
+"r_editlights_reload : reload .rtlights, .lights file, or entities\n"
+"r_editlights_save : save to .rtlights file\n"
+"r_editlights_spawn : create a light with default settings\n"
+"r_editlights_edit command : edit selected light - more documentation below\n"
+"r_editlights_remove : remove selected light\n"
+"r_editlights_toggleshadow : toggles on/off selected light's shadow property\n"
+"r_editlights_importlightentitiesfrommap : reload light entities\n"
+"r_editlights_importlightsfile : reload .light file (produced by hlight)\n"
+"Edit commands:\n"
+"origin x y z : set light location\n"
+"originx x: set x component of light location\n"
+"originy y: set y component of light location\n"
+"originz z: set z component of light location\n"
+"move x y z : adjust light location\n"
+"movex x: adjust x component of light location\n"
+"movey y: adjust y component of light location\n"
+"movez z: adjust z component of light location\n"
+"angles x y z : set light angles\n"
+"anglesx x: set x component of light angles\n"
+"anglesy y: set y component of light angles\n"
+"anglesz z: set z component of light angles\n"
+"color r g b : set color of light (can be brighter than 1 1 1)\n"
+"radius radius : set radius (size) of light\n"
+"colorscale grey : multiply color of light (1 does nothing)\n"
+"colorscale r g b : multiply color of light (1 1 1 does nothing)\n"
+"radiusscale scale : multiply radius (size) of light (1 does nothing)\n"
+"sizescale scale : multiply radius (size) of light (1 does nothing)\n"
+"style style : set lightstyle of light (flickering patterns, switches, etc)\n"
+"cubemap basename : set filter cubemap of light (not yet supported)\n"
+"shadows 1/0 : turn on/off shadows\n"
+"corona n : set corona intensity\n"
+"coronasize n : set corona size (0-1)\n"
+"ambient n : set ambient intensity (0-1)\n"
+"diffuse n : set diffuse intensity (0-1)\n"
+"specular n : set specular intensity (0-1)\n"
+"normalmode 1/0 : turn on/off rendering of this light in rtworld 0 mode\n"
+"realtimemode 1/0 : turn on/off rendering of this light in rtworld 1 mode\n"
+"<nothing> : print light properties to console\n"
+       );
+}
+
+void R_Shadow_EditLights_CopyInfo_f(void)
+{
+       if (!r_editlights.integer)
+       {
+               Con_Print("Cannot copy light info when not in editing mode.  Set r_editlights to 1.\n");
+               return;
+       }
+       if (!r_shadow_selectedlight)
+       {
+               Con_Print("No selected light.\n");
+               return;
+       }
+       VectorCopy(r_shadow_selectedlight->angles, r_shadow_bufferlight.angles);
+       VectorCopy(r_shadow_selectedlight->color, r_shadow_bufferlight.color);
+       r_shadow_bufferlight.radius = r_shadow_selectedlight->radius;
+       r_shadow_bufferlight.style = r_shadow_selectedlight->style;
+       if (r_shadow_selectedlight->cubemapname)
+               strcpy(r_shadow_bufferlight.cubemapname, r_shadow_selectedlight->cubemapname);
+       else
+               r_shadow_bufferlight.cubemapname[0] = 0;
+       r_shadow_bufferlight.shadow = r_shadow_selectedlight->shadow;
+       r_shadow_bufferlight.corona = r_shadow_selectedlight->corona;
+       r_shadow_bufferlight.coronasizescale = r_shadow_selectedlight->coronasizescale;
+       r_shadow_bufferlight.ambientscale = r_shadow_selectedlight->ambientscale;
+       r_shadow_bufferlight.diffusescale = r_shadow_selectedlight->diffusescale;
+       r_shadow_bufferlight.specularscale = r_shadow_selectedlight->specularscale;
+       r_shadow_bufferlight.flags = r_shadow_selectedlight->flags;
+}
+
+void R_Shadow_EditLights_PasteInfo_f(void)
+{
+       if (!r_editlights.integer)
+       {
+               Con_Print("Cannot paste light info when not in editing mode.  Set r_editlights to 1.\n");
+               return;
+       }
+       if (!r_shadow_selectedlight)
+       {
+               Con_Print("No selected light.\n");
+               return;
+       }
+       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);
+}
+
 void R_Shadow_EditLights_Init(void)
 {
        Cvar_RegisterVariable(&r_editlights);
@@ -2580,15 +4290,19 @@ void R_Shadow_EditLights_Init(void)
        Cvar_RegisterVariable(&r_editlights_cursorpushoff);
        Cvar_RegisterVariable(&r_editlights_cursorgrid);
        Cvar_RegisterVariable(&r_editlights_quakelightsizescale);
-       Cvar_RegisterVariable(&r_editlights_rtlightssizescale);
-       Cvar_RegisterVariable(&r_editlights_rtlightscolorscale);
+       Cmd_AddCommand("r_editlights_help", R_Shadow_EditLights_Help_f);
        Cmd_AddCommand("r_editlights_clear", R_Shadow_EditLights_Clear_f);
        Cmd_AddCommand("r_editlights_reload", R_Shadow_EditLights_Reload_f);
        Cmd_AddCommand("r_editlights_save", R_Shadow_EditLights_Save_f);
        Cmd_AddCommand("r_editlights_spawn", R_Shadow_EditLights_Spawn_f);
        Cmd_AddCommand("r_editlights_edit", R_Shadow_EditLights_Edit_f);
+       Cmd_AddCommand("r_editlights_editall", R_Shadow_EditLights_EditAll_f);
        Cmd_AddCommand("r_editlights_remove", R_Shadow_EditLights_Remove_f);
        Cmd_AddCommand("r_editlights_toggleshadow", R_Shadow_EditLights_ToggleShadow_f);
+       Cmd_AddCommand("r_editlights_togglecorona", R_Shadow_EditLights_ToggleCorona_f);
        Cmd_AddCommand("r_editlights_importlightentitiesfrommap", R_Shadow_EditLights_ImportLightEntitiesFromMap_f);
        Cmd_AddCommand("r_editlights_importlightsfile", R_Shadow_EditLights_ImportLightsFile_f);
+       Cmd_AddCommand("r_editlights_copyinfo", R_Shadow_EditLights_CopyInfo_f);
+       Cmd_AddCommand("r_editlights_pasteinfo", R_Shadow_EditLights_PasteInfo_f);
 }
+