r_shadow.c

   1
   2 /*
   3 Terminology: Stencil Shadow Volume (sometimes called Stencil Shadows)
   4 An extrusion of the lit faces, beginning at the original geometry and ending
   5 further from the light source than the original geometry (presumably at least
   6 as far as the light's radius, if the light has a radius at all), capped at
   7 both front and back to avoid any problems (extrusion from dark faces also
   8 works but has a different set of problems)
   9
  10 This is normally rendered using Carmack's Reverse technique, in which
  11 backfaces behind zbuffer (zfail) increment the stencil, and frontfaces behind
  12 zbuffer (zfail) decrement the stencil, the result is a stencil value of zero
  13 where shadows did not intersect the visible geometry, suitable as a stencil
  14 mask for rendering lighting everywhere but shadow.
  15
  16 In our case to hopefully avoid the Creative Labs patent, we draw the backfaces
  17 as decrement and the frontfaces as increment, and we redefine the DepthFunc to
  18 GL_LESS (the patent uses GL_GEQUAL) which causes zfail when behind surfaces
  19 and zpass when infront (the patent draws where zpass with a GL_GEQUAL test),
  20 additionally we clear stencil to 128 to avoid the need for the unclamped
  21 incr/decr extension (not related to patent).
  22
  23 Patent warning:
  24 This algorithm may be covered by Creative's patent (US Patent #6384822),
  25 however that patent is quite specific about increment on backfaces and
  26 decrement on frontfaces where zpass with GL_GEQUAL depth test, which is
  27 opposite this implementation and partially opposite Carmack's Reverse paper
  28 (which uses GL_LESS, but increments on backfaces and decrements on frontfaces).
  29
  30
  31
  32 Terminology: Stencil Light Volume (sometimes called Light Volumes)
  33 Similar to a Stencil Shadow Volume, but inverted; rather than containing the
  34 areas in shadow it contains the areas in light, this can only be built
  35 quickly for certain limited cases (such as portal visibility from a point),
  36 but is quite useful for some effects (sunlight coming from sky polygons is
  37 one possible example, translucent occluders is another example).
  38
  39
  40
  41 Terminology: Optimized Stencil Shadow Volume
  42 A Stencil Shadow Volume that has been processed sufficiently to ensure it has
  43 no duplicate coverage of areas (no need to shadow an area twice), often this
  44 greatly improves performance but is an operation too costly to use on moving
  45 lights (however completely optimal Stencil Light Volumes can be constructed
  46 in some ideal cases).
  47
  48
  49
  50 Terminology: Per Pixel Lighting (sometimes abbreviated PPL)
  51 Per pixel evaluation of lighting equations, at a bare minimum this involves
  52 DOT3 shading of diffuse lighting (per pixel dotproduct of negated incidence
  53 vector and surface normal, using a texture of the surface bumps, called a
  54 NormalMap) if supported by hardware; in our case there is support for cards
  55 which are incapable of DOT3, the quality is quite poor however.  Additionally
  56 it is desirable to have specular evaluation per pixel, per vertex
  57 normalization of specular halfangle vectors causes noticable distortion but
  58 is unavoidable on hardware without GL_ARB_fragment_program or
  59 GL_ARB_fragment_shader.
  60
  61
  62
  63 Terminology: Normalization CubeMap
  64 A cubemap containing normalized dot3-encoded (vectors of length 1 or less
  65 encoded as RGB colors) for any possible direction, this technique allows per
  66 pixel calculation of incidence vector for per pixel lighting purposes, which
  67 would not otherwise be possible per pixel without GL_ARB_fragment_program or
  68 GL_ARB_fragment_shader.
  69
  70
  71
  72 Terminology: 2D+1D Attenuation Texturing
  73 A very crude approximation of light attenuation with distance which results
  74 in cylindrical light shapes which fade vertically as a streak (some games
  75 such as Doom3 allow this to be rotated to be less noticable in specific
  76 cases), the technique is simply modulating lighting by two 2D textures (which
  77 can be the same) on different axes of projection (XY and Z, typically), this
  78 is the second best technique available without 3D Attenuation Texturing,
  79 GL_ARB_fragment_program or GL_ARB_fragment_shader technology.
  80
  81
  82
  83 Terminology: 2D+1D Inverse Attenuation Texturing
  84 A clever method described in papers on the Abducted engine, this has a squared
  85 distance texture (bright on the outside, black in the middle), which is used
  86 twice using GL_ADD blending, the result of this is used in an inverse modulate
  87 (GL_ONE_MINUS_DST_ALPHA, GL_ZERO) to implement the equation
  88 lighting*=(1-((X*X+Y*Y)+(Z*Z))) which is spherical (unlike 2D+1D attenuation
  89 texturing).
  90
  91
  92
  93 Terminology: 3D Attenuation Texturing
  94 A slightly crude approximation of light attenuation with distance, its flaws
  95 are limited radius and resolution (performance tradeoffs).
  96
  97
  98
  99 Terminology: 3D Attenuation-Normalization Texturing
 100 A 3D Attenuation Texture merged with a Normalization CubeMap, by making the
 101 vectors shorter the lighting becomes darker, a very effective optimization of
 102 diffuse lighting if 3D Attenuation Textures are already used.
 103
 104
 105
 106 Terminology: Light Cubemap Filtering
 107 A technique for modeling non-uniform light distribution according to
 108 direction, for example a lantern may use a cubemap to describe the light
 109 emission pattern of the cage around the lantern (as well as soot buildup
 110 discoloring the light in certain areas), often also used for softened grate
 111 shadows and light shining through a stained glass window (done crudely by
 112 texturing the lighting with a cubemap), another good example would be a disco
 113 light.  This technique is used heavily in many games (Doom3 does not support
 114 this however).
 115
 116
 117
 118 Terminology: Light Projection Filtering
 119 A technique for modeling shadowing of light passing through translucent
 120 surfaces, allowing stained glass windows and other effects to be done more
 121 elegantly than possible with Light Cubemap Filtering by applying an occluder
 122 texture to the lighting combined with a stencil light volume to limit the lit
 123 area, this technique is used by Doom3 for spotlights and flashlights, among
 124 other things, this can also be used more generally to render light passing
 125 through multiple translucent occluders in a scene (using a light volume to
 126 describe the area beyond the occluder, and thus mask off rendering of all
 127 other areas).
 128
 129
 130
 131 Terminology: Doom3 Lighting
 132 A combination of Stencil Shadow Volume, Per Pixel Lighting, Normalization
 133 CubeMap, 2D+1D Attenuation Texturing, and Light Projection Filtering, as
 134 demonstrated by the game Doom3.
 135 */
 136
 137 #include "quakedef.h"
 138 #include "r_shadow.h"
 139 #include "cl_collision.h"
 140 #include "portals.h"
 141 #include "image.h"
 142
 143 #define R_SHADOW_SHADOWMAP_NUMCUBEMAPS 8
 144
 145 extern void R_Shadow_EditLights_Init(void);
 146
 147 typedef enum r_shadow_rendermode_e
 148 {
 149         R_SHADOW_RENDERMODE_NONE,
 150         R_SHADOW_RENDERMODE_ZPASS_STENCIL,
 151         R_SHADOW_RENDERMODE_ZPASS_SEPARATESTENCIL,
 152         R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE,
 153         R_SHADOW_RENDERMODE_ZFAIL_STENCIL,
 154         R_SHADOW_RENDERMODE_ZFAIL_SEPARATESTENCIL,
 155         R_SHADOW_RENDERMODE_ZFAIL_STENCILTWOSIDE,
 156         R_SHADOW_RENDERMODE_LIGHT_VERTEX,
 157         R_SHADOW_RENDERMODE_LIGHT_DOT3,
 158         R_SHADOW_RENDERMODE_LIGHT_GLSL,
 159         R_SHADOW_RENDERMODE_VISIBLEVOLUMES,
 160         R_SHADOW_RENDERMODE_VISIBLELIGHTING,
 161         R_SHADOW_RENDERMODE_SHADOWMAP2D,
 162         R_SHADOW_RENDERMODE_SHADOWMAPRECTANGLE,
 163         R_SHADOW_RENDERMODE_SHADOWMAPCUBESIDE,
 164 }
 165 r_shadow_rendermode_t;
 166
 167 typedef enum r_shadow_shadowmode_e
 168 {
 169     R_SHADOW_SHADOWMODE_STENCIL,
 170     R_SHADOW_SHADOWMODE_SHADOWMAP2D,
 171     R_SHADOW_SHADOWMODE_SHADOWMAPRECTANGLE,
 172     R_SHADOW_SHADOWMODE_SHADOWMAPCUBESIDE
 173 }
 174 r_shadow_shadowmode_t;
 175
 176 r_shadow_rendermode_t r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
 177 r_shadow_rendermode_t r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_NONE;
 178 r_shadow_rendermode_t r_shadow_shadowingrendermode_zpass = R_SHADOW_RENDERMODE_NONE;
 179 r_shadow_rendermode_t r_shadow_shadowingrendermode_zfail = R_SHADOW_RENDERMODE_NONE;
 180 qboolean r_shadow_usingshadowmaprect;
 181 qboolean r_shadow_usingshadowmap2d;
 182 qboolean r_shadow_usingshadowmapcube;
 183 int r_shadow_shadowmapside;
 184 float r_shadow_shadowmap_texturescale[2];
 185 float r_shadow_shadowmap_parameters[4];
 186 #if 0
 187 int r_shadow_drawbuffer;
 188 int r_shadow_readbuffer;
 189 #endif
 190 int r_shadow_cullface_front, r_shadow_cullface_back;
 191 GLuint r_shadow_fborectangle;
 192 GLuint r_shadow_fbocubeside[R_SHADOW_SHADOWMAP_NUMCUBEMAPS];
 193 GLuint r_shadow_fbo2d;
 194 r_shadow_shadowmode_t r_shadow_shadowmode;
 195 int r_shadow_shadowmapfilterquality;
 196 int r_shadow_shadowmaptexturetype;
 197 int r_shadow_shadowmapdepthbits;
 198 int r_shadow_shadowmapmaxsize;
 199 qboolean r_shadow_shadowmapvsdct;
 200 qboolean r_shadow_shadowmapsampler;
 201 int r_shadow_shadowmappcf;
 202 int r_shadow_shadowmapborder;
 203 int r_shadow_lightscissor[4];
 204
 205 int maxshadowtriangles;
 206 int *shadowelements;
 207
 208 int maxshadowvertices;
 209 float *shadowvertex3f;
 210
 211 int maxshadowmark;
 212 int numshadowmark;
 213 int *shadowmark;
 214 int *shadowmarklist;
 215 int shadowmarkcount;
 216
 217 int maxshadowsides;
 218 int numshadowsides;
 219 unsigned char *shadowsides;
 220 int *shadowsideslist;
 221
 222 int maxvertexupdate;
 223 int *vertexupdate;
 224 int *vertexremap;
 225 int vertexupdatenum;
 226
 227 int r_shadow_buffer_numleafpvsbytes;
 228 unsigned char *r_shadow_buffer_visitingleafpvs;
 229 unsigned char *r_shadow_buffer_leafpvs;
 230 int *r_shadow_buffer_leaflist;
 231
 232 int r_shadow_buffer_numsurfacepvsbytes;
 233 unsigned char *r_shadow_buffer_surfacepvs;
 234 int *r_shadow_buffer_surfacelist;
 235 unsigned char *r_shadow_buffer_surfacesides;
 236
 237 int r_shadow_buffer_numshadowtrispvsbytes;
 238 unsigned char *r_shadow_buffer_shadowtrispvs;
 239 int r_shadow_buffer_numlighttrispvsbytes;
 240 unsigned char *r_shadow_buffer_lighttrispvs;
 241
 242 rtexturepool_t *r_shadow_texturepool;
 243 rtexture_t *r_shadow_attenuationgradienttexture;
 244 rtexture_t *r_shadow_attenuation2dtexture;
 245 rtexture_t *r_shadow_attenuation3dtexture;
 246 rtexture_t *r_shadow_lightcorona;
 247 rtexture_t *r_shadow_shadowmaprectangletexture;
 248 rtexture_t *r_shadow_shadowmap2dtexture;
 249 rtexture_t *r_shadow_shadowmapcubetexture[R_SHADOW_SHADOWMAP_NUMCUBEMAPS];
 250 rtexture_t *r_shadow_shadowmapvsdcttexture;
 251 int r_shadow_shadowmapsize; // changes for each light based on distance
 252 int r_shadow_shadowmaplod; // changes for each light based on distance
 253
 254 // lights are reloaded when this changes
 255 char r_shadow_mapname[MAX_QPATH];
 256
 257 // used only for light filters (cubemaps)
 258 rtexturepool_t *r_shadow_filters_texturepool;
 259
 260 cvar_t r_shadow_bumpscale_basetexture = {0, "r_shadow_bumpscale_basetexture", "0", "generate fake bumpmaps from diffuse textures at this bumpyness, try 4 to match tenebrae, higher values increase depth, requires r_restart to take effect"};
 261 cvar_t r_shadow_bumpscale_bumpmap = {0, "r_shadow_bumpscale_bumpmap", "4", "what magnitude to interpret _bump.tga textures as, higher values increase depth, requires r_restart to take effect"};
 262 cvar_t r_shadow_debuglight = {0, "r_shadow_debuglight", "-1", "renders only one light, for level design purposes or debugging"};
 263 cvar_t r_shadow_dot3 = {CVAR_SAVE, "r_shadow_dot3", "0", "enables use of (slow) per pixel lighting on GL1.3 hardware"};
 264 cvar_t r_shadow_usenormalmap = {CVAR_SAVE, "r_shadow_usenormalmap", "1", "enables use of directional shading on lights"};
 265 cvar_t r_shadow_gloss = {CVAR_SAVE, "r_shadow_gloss", "1", "0 disables gloss (specularity) rendering, 1 uses gloss if textures are found, 2 forces a flat metallic specular effect on everything without textures (similar to tenebrae)"};
 266 cvar_t r_shadow_gloss2intensity = {0, "r_shadow_gloss2intensity", "0.125", "how bright the forced flat gloss should look if r_shadow_gloss is 2"};
 267 cvar_t r_shadow_glossintensity = {0, "r_shadow_glossintensity", "1", "how bright textured glossmaps should look if r_shadow_gloss is 1 or 2"};
 268 cvar_t r_shadow_glossexponent = {0, "r_shadow_glossexponent", "32", "how 'sharp' the gloss should appear (specular power)"};
 269 cvar_t r_shadow_gloss2exponent = {0, "r_shadow_gloss2exponent", "32", "same as r_shadow_glossexponent but for forced gloss (gloss 2) surfaces"};
 270 cvar_t r_shadow_glossexact = {0, "r_shadow_glossexact", "0", "use exact reflection math for gloss (slightly slower, but should look a tad better)"};
 271 cvar_t r_shadow_lightattenuationdividebias = {0, "r_shadow_lightattenuationdividebias", "1", "changes attenuation texture generation"};
 272 cvar_t r_shadow_lightattenuationlinearscale = {0, "r_shadow_lightattenuationlinearscale", "2", "changes attenuation texture generation"};
 273 cvar_t r_shadow_lightintensityscale = {0, "r_shadow_lightintensityscale", "1", "renders all world lights brighter or darker"};
 274 cvar_t r_shadow_lightradiusscale = {0, "r_shadow_lightradiusscale", "1", "renders all world lights larger or smaller"};
 275 cvar_t r_shadow_portallight = {0, "r_shadow_portallight", "1", "use portal culling to exactly determine lit triangles when compiling world lights"};
 276 cvar_t r_shadow_projectdistance = {0, "r_shadow_projectdistance", "1000000", "how far to cast shadows"};
 277 cvar_t r_shadow_frontsidecasting = {0, "r_shadow_frontsidecasting", "1", "whether to cast shadows from illuminated triangles (front side of model) or unlit triangles (back side of model)"};
 278 cvar_t r_shadow_realtime_dlight = {CVAR_SAVE, "r_shadow_realtime_dlight", "1", "enables rendering of dynamic lights such as explosions and rocket light"};
 279 cvar_t r_shadow_realtime_dlight_shadows = {CVAR_SAVE, "r_shadow_realtime_dlight_shadows", "1", "enables rendering of shadows from dynamic lights"};
 280 cvar_t r_shadow_realtime_dlight_svbspculling = {0, "r_shadow_realtime_dlight_svbspculling", "0", "enables svbsp optimization on dynamic lights (very slow!)"};
 281 cvar_t r_shadow_realtime_dlight_portalculling = {0, "r_shadow_realtime_dlight_portalculling", "0", "enables portal optimization on dynamic lights (slow!)"};
 282 cvar_t r_shadow_realtime_world = {CVAR_SAVE, "r_shadow_realtime_world", "0", "enables rendering of full world lighting (whether loaded from the map, or a .rtlights file, or a .ent file, or a .lights file produced by hlight)"};
 283 cvar_t r_shadow_realtime_world_lightmaps = {CVAR_SAVE, "r_shadow_realtime_world_lightmaps", "0", "brightness to render lightmaps when using full world lighting, try 0.5 for a tenebrae-like appearance"};
 284 cvar_t r_shadow_realtime_world_shadows = {CVAR_SAVE, "r_shadow_realtime_world_shadows", "1", "enables rendering of shadows from world lights"};
 285 cvar_t r_shadow_realtime_world_compile = {0, "r_shadow_realtime_world_compile", "1", "enables compilation of world lights for higher performance rendering"};
 286 cvar_t r_shadow_realtime_world_compileshadow = {0, "r_shadow_realtime_world_compileshadow", "1", "enables compilation of shadows from world lights for higher performance rendering"};
 287 cvar_t r_shadow_realtime_world_compilesvbsp = {0, "r_shadow_realtime_world_compilesvbsp", "1", "enables svbsp optimization during compilation"};
 288 cvar_t r_shadow_realtime_world_compileportalculling = {0, "r_shadow_realtime_world_compileportalculling", "1", "enables portal-based culling optimization during compilation"};
 289 cvar_t r_shadow_scissor = {0, "r_shadow_scissor", "1", "use scissor optimization of light rendering (restricts rendering to the portion of the screen affected by the light)"};
 290 cvar_t r_shadow_shadowmapping = {CVAR_SAVE, "r_shadow_shadowmapping", "0", "enables use of shadowmapping (depth texture sampling) instead of stencil shadow volumes, requires gl_fbo 1"};
 291 cvar_t r_shadow_shadowmapping_texturetype = {CVAR_SAVE, "r_shadow_shadowmapping_texturetype", "-1", "shadowmap texture types: -1 = auto-select, 0 = 2D, 1 = rectangle, 2 = cubemap"};
 292 cvar_t r_shadow_shadowmapping_filterquality = {CVAR_SAVE, "r_shadow_shadowmapping_filterquality", "-1", "shadowmap filter modes: -1 = auto-select, 0 = no filtering, 1 = bilinear, 2 = bilinear 2x2 blur (fast), 3 = 3x3 blur (moderate), 4 = 4x4 blur (slow)"};
 293 cvar_t r_shadow_shadowmapping_depthbits = {CVAR_SAVE, "r_shadow_shadowmapping_depthbits", "24", "requested minimum shadowmap texture depth bits"};
 294 cvar_t r_shadow_shadowmapping_vsdct = {CVAR_SAVE, "r_shadow_shadowmapping_vsdct", "1", "enables use of virtual shadow depth cube texture"};
 295 cvar_t r_shadow_shadowmapping_minsize = {CVAR_SAVE, "r_shadow_shadowmapping_minsize", "32", "shadowmap size limit"};
 296 cvar_t r_shadow_shadowmapping_maxsize = {CVAR_SAVE, "r_shadow_shadowmapping_maxsize", "512", "shadowmap size limit"};
 297 cvar_t r_shadow_shadowmapping_precision = {CVAR_SAVE, "r_shadow_shadowmapping_precision", "1", "makes shadowmaps have a maximum resolution of this number of pixels per light source radius unit such that, for example, at precision 0.5 a light with radius 200 will have a maximum resolution of 100 pixels"};
 298 //cvar_t r_shadow_shadowmapping_lod_bias = {CVAR_SAVE, "r_shadow_shadowmapping_lod_bias", "16", "shadowmap size bias"};
 299 //cvar_t r_shadow_shadowmapping_lod_scale = {CVAR_SAVE, "r_shadow_shadowmapping_lod_scale", "128", "shadowmap size scaling parameter"};
 300 cvar_t r_shadow_shadowmapping_bordersize = {CVAR_SAVE, "r_shadow_shadowmapping_bordersize", "4", "shadowmap size bias for filtering"};
 301 cvar_t r_shadow_shadowmapping_nearclip = {CVAR_SAVE, "r_shadow_shadowmapping_nearclip", "1", "shadowmap nearclip in world units"};
 302 cvar_t r_shadow_shadowmapping_bias = {CVAR_SAVE, "r_shadow_shadowmapping_bias", "0.03", "shadowmap bias parameter (this is multiplied by nearclip * 1024 / lodsize)"};
 303 cvar_t r_shadow_shadowmapping_polygonfactor = {CVAR_SAVE, "r_shadow_shadowmapping_polygonfactor", "2", "slope-dependent shadowmapping bias"};
 304 cvar_t r_shadow_shadowmapping_polygonoffset = {CVAR_SAVE, "r_shadow_shadowmapping_polygonoffset", "0", "constant shadowmapping bias"};
 305 cvar_t r_shadow_culltriangles = {0, "r_shadow_culltriangles", "1", "performs more expensive tests to remove unnecessary triangles of lit surfaces"};
 306 cvar_t r_shadow_polygonfactor = {0, "r_shadow_polygonfactor", "0", "how much to enlarge shadow volume polygons when rendering (should be 0!)"};
 307 cvar_t r_shadow_polygonoffset = {0, "r_shadow_polygonoffset", "1", "how much to push shadow volumes into the distance when rendering, to reduce chances of zfighting artifacts (should not be less than 0)"};
 308 cvar_t r_shadow_texture3d = {0, "r_shadow_texture3d", "1", "use 3D voxel textures for spherical attenuation rather than cylindrical (does not affect r_glsl lighting)"};
 309 cvar_t r_coronas = {CVAR_SAVE, "r_coronas", "1", "brightness of corona flare effects around certain lights, 0 disables corona effects"};
 310 cvar_t r_coronas_occlusionsizescale = {CVAR_SAVE, "r_coronas_occlusionsizescale", "0.1", "size of light source for corona occlusion checksm the proportion of hidden pixels controls corona intensity"};
 311 cvar_t r_coronas_occlusionquery = {CVAR_SAVE, "r_coronas_occlusionquery", "1", "use GL_ARB_occlusion_query extension if supported (fades coronas according to visibility)"};
 312 cvar_t gl_flashblend = {CVAR_SAVE, "gl_flashblend", "0", "render bright coronas for dynamic lights instead of actual lighting, fast but ugly"};
 313 cvar_t gl_ext_separatestencil = {0, "gl_ext_separatestencil", "1", "make use of OpenGL 2.0 glStencilOpSeparate or GL_ATI_separate_stencil extension"};
 314 cvar_t gl_ext_stenciltwoside = {0, "gl_ext_stenciltwoside", "1", "make use of GL_EXT_stenciltwoside extension (NVIDIA only)"};
 315 cvar_t r_editlights = {0, "r_editlights", "0", "enables .rtlights file editing mode"};
 316 cvar_t r_editlights_cursordistance = {0, "r_editlights_cursordistance", "1024", "maximum distance of cursor from eye"};
 317 cvar_t r_editlights_cursorpushback = {0, "r_editlights_cursorpushback", "0", "how far to pull the cursor back toward the eye"};
 318 cvar_t r_editlights_cursorpushoff = {0, "r_editlights_cursorpushoff", "4", "how far to push the cursor off the impacted surface"};
 319 cvar_t r_editlights_cursorgrid = {0, "r_editlights_cursorgrid", "4", "snaps cursor to this grid size"};
 320 cvar_t r_editlights_quakelightsizescale = {CVAR_SAVE, "r_editlights_quakelightsizescale", "1", "changes size of light entities loaded from a map"};
 321
 322 // note the table actually includes one more value, just to avoid the need to clamp the distance index due to minor math error
 323 #define ATTENTABLESIZE 256
 324 // 1D gradient, 2D circle and 3D sphere attenuation textures
 325 #define ATTEN1DSIZE 32
 326 #define ATTEN2DSIZE 64
 327 #define ATTEN3DSIZE 32
 328
 329 static float r_shadow_attendividebias; // r_shadow_lightattenuationdividebias
 330 static float r_shadow_attenlinearscale; // r_shadow_lightattenuationlinearscale
 331 static float r_shadow_attentable[ATTENTABLESIZE+1];
 332
 333 rtlight_t *r_shadow_compilingrtlight;
 334 static memexpandablearray_t r_shadow_worldlightsarray;
 335 dlight_t *r_shadow_selectedlight;
 336 dlight_t r_shadow_bufferlight;
 337 vec3_t r_editlights_cursorlocation;
 338
 339 extern int con_vislines;
 340
 341 typedef struct cubemapinfo_s
 342 {
 343         char basename[64];
 344         rtexture_t *texture;
 345 }
 346 cubemapinfo_t;
 347
 348 #define MAX_CUBEMAPS 256
 349 static int numcubemaps;
 350 static cubemapinfo_t cubemaps[MAX_CUBEMAPS];
 351
 352 void R_Shadow_UncompileWorldLights(void);
 353 void R_Shadow_ClearWorldLights(void);
 354 void R_Shadow_SaveWorldLights(void);
 355 void R_Shadow_LoadWorldLights(void);
 356 void R_Shadow_LoadLightsFile(void);
 357 void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void);
 358 void R_Shadow_EditLights_Reload_f(void);
 359 void R_Shadow_ValidateCvars(void);
 360 static void R_Shadow_MakeTextures(void);
 361
 362 // VorteX: custom editor light sprites
 363 #define EDLIGHTSPRSIZE                  8
 364 cachepic_t *r_editlights_sprcursor;
 365 cachepic_t *r_editlights_sprlight;
 366 cachepic_t *r_editlights_sprnoshadowlight;
 367 cachepic_t *r_editlights_sprcubemaplight;
 368 cachepic_t *r_editlights_sprcubemapnoshadowlight;
 369 cachepic_t *r_editlights_sprselection;
 370 extern cvar_t gl_max_size;
 371
 372 void R_Shadow_SetShadowMode(void)
 373 {
 374         r_shadow_shadowmapmaxsize = bound(1, r_shadow_shadowmapping_maxsize.integer, gl_max_size.integer / 4);
 375         r_shadow_shadowmapvsdct = r_shadow_shadowmapping_vsdct.integer != 0;
 376         r_shadow_shadowmapfilterquality = r_shadow_shadowmapping_filterquality.integer;
 377         r_shadow_shadowmaptexturetype = r_shadow_shadowmapping_texturetype.integer;
 378         r_shadow_shadowmapdepthbits = r_shadow_shadowmapping_depthbits.integer;
 379         r_shadow_shadowmapborder = bound(0, r_shadow_shadowmapping_bordersize.integer, 16);
 380         r_shadow_shadowmaplod = -1;
 381         r_shadow_shadowmapsize = 0;
 382         r_shadow_shadowmapsampler = false;
 383         r_shadow_shadowmappcf = 0;
 384         r_shadow_shadowmode = R_SHADOW_SHADOWMODE_STENCIL;
 385         if(r_shadow_shadowmapping.integer && r_glsl.integer && gl_support_fragment_shader && gl_support_ext_framebuffer_object)
 386         {
 387                 if(r_shadow_shadowmapfilterquality < 0)
 388                 {
 389                         if(strstr(gl_vendor, "NVIDIA"))
 390                         {
 391                                 r_shadow_shadowmapsampler = gl_support_arb_shadow;
 392                                 r_shadow_shadowmappcf = 1;
 393                         }
 394                         else if(gl_support_amd_texture_texture4 || gl_support_arb_texture_gather)
 395                                 r_shadow_shadowmappcf = 1;
 396                         else if(strstr(gl_vendor, "ATI"))
 397                                 r_shadow_shadowmappcf = 1;
 398                         else
 399                                 r_shadow_shadowmapsampler = gl_support_arb_shadow;
 400                 }
 401                 else
 402                 {
 403                         switch (r_shadow_shadowmapfilterquality)
 404                         {
 405                         case 1:
 406                                 r_shadow_shadowmapsampler = gl_support_arb_shadow;
 407                                 break;
 408                         case 2:
 409                                 r_shadow_shadowmapsampler = gl_support_arb_shadow;
 410                                 r_shadow_shadowmappcf = 1;
 411                                 break;
 412                         case 3:
 413                                 r_shadow_shadowmappcf = 1;
 414                                 break;
 415                         case 4:
 416                                 r_shadow_shadowmappcf = 2;
 417                                 break;
 418                         }
 419                 }
 420         switch (r_shadow_shadowmaptexturetype)
 421         {
 422         case 0:
 423             r_shadow_shadowmode = R_SHADOW_SHADOWMODE_SHADOWMAP2D;
 424             break;
 425         case 1:
 426             r_shadow_shadowmode = R_SHADOW_SHADOWMODE_SHADOWMAPRECTANGLE;
 427             break;
 428         case 2:
 429             r_shadow_shadowmode = R_SHADOW_SHADOWMODE_SHADOWMAPCUBESIDE;
 430             break;
 431         default:
 432                         if((gl_support_amd_texture_texture4 || gl_support_arb_texture_gather) && r_shadow_shadowmappcf && !r_shadow_shadowmapsampler)
 433                                 r_shadow_shadowmode = R_SHADOW_SHADOWMODE_SHADOWMAP2D;
 434                         else if(gl_texturerectangle)
 435                                 r_shadow_shadowmode = R_SHADOW_SHADOWMODE_SHADOWMAPRECTANGLE;
 436                         else
 437                                 r_shadow_shadowmode = R_SHADOW_SHADOWMODE_SHADOWMAP2D;
 438             break;
 439                 }
 440         }
 441 }
 442
 443 void R_Shadow_FreeShadowMaps(void)
 444 {
 445         int i;
 446
 447         R_Shadow_SetShadowMode();
 448
 449         if (r_shadow_fborectangle)
 450                 qglDeleteFramebuffersEXT(1, &r_shadow_fborectangle);
 451         r_shadow_fborectangle = 0;
 452         CHECKGLERROR
 453
 454         if (r_shadow_fbo2d)
 455                 qglDeleteFramebuffersEXT(1, &r_shadow_fbo2d);
 456         r_shadow_fbo2d = 0;
 457         CHECKGLERROR
 458         for (i = 0;i < R_SHADOW_SHADOWMAP_NUMCUBEMAPS;i++)
 459                 if (r_shadow_fbocubeside[i])
 460                         qglDeleteFramebuffersEXT(1, &r_shadow_fbocubeside[i]);
 461         memset(r_shadow_fbocubeside, 0, sizeof(r_shadow_fbocubeside));
 462         CHECKGLERROR
 463
 464         if (r_shadow_shadowmaprectangletexture)
 465                 R_FreeTexture(r_shadow_shadowmaprectangletexture);
 466         r_shadow_shadowmaprectangletexture = NULL;
 467
 468         if (r_shadow_shadowmap2dtexture)
 469                 R_FreeTexture(r_shadow_shadowmap2dtexture);
 470         r_shadow_shadowmap2dtexture = NULL;
 471
 472         for (i = 0;i < R_SHADOW_SHADOWMAP_NUMCUBEMAPS;i++)
 473                 if (r_shadow_shadowmapcubetexture[i])
 474                         R_FreeTexture(r_shadow_shadowmapcubetexture[i]);
 475         memset(r_shadow_shadowmapcubetexture, 0, sizeof(r_shadow_shadowmapcubetexture));
 476
 477         if (r_shadow_shadowmapvsdcttexture)
 478                 R_FreeTexture(r_shadow_shadowmapvsdcttexture);
 479         r_shadow_shadowmapvsdcttexture = NULL;
 480
 481         CHECKGLERROR
 482 }
 483
 484 void r_shadow_start(void)
 485 {
 486         // allocate vertex processing arrays
 487         numcubemaps = 0;
 488         r_shadow_attenuationgradienttexture = NULL;
 489         r_shadow_attenuation2dtexture = NULL;
 490         r_shadow_attenuation3dtexture = NULL;
 491         r_shadow_shadowmode = R_SHADOW_SHADOWMODE_STENCIL;
 492         r_shadow_shadowmaprectangletexture = NULL;
 493         r_shadow_shadowmap2dtexture = NULL;
 494         memset(r_shadow_shadowmapcubetexture, 0, sizeof(r_shadow_shadowmapcubetexture));
 495         r_shadow_shadowmapvsdcttexture = NULL;
 496         r_shadow_shadowmapmaxsize = 0;
 497         r_shadow_shadowmapsize = 0;
 498         r_shadow_shadowmaplod = 0;
 499         r_shadow_shadowmapfilterquality = -1;
 500         r_shadow_shadowmaptexturetype = -1;
 501         r_shadow_shadowmapdepthbits = 0;
 502         r_shadow_shadowmapvsdct = false;
 503         r_shadow_shadowmapsampler = false;
 504         r_shadow_shadowmappcf = 0;
 505         r_shadow_fborectangle = 0;
 506         r_shadow_fbo2d = 0;
 507         memset(r_shadow_fbocubeside, 0, sizeof(r_shadow_fbocubeside));
 508
 509         R_Shadow_FreeShadowMaps();
 510
 511         r_shadow_texturepool = NULL;
 512         r_shadow_filters_texturepool = NULL;
 513         R_Shadow_ValidateCvars();
 514         R_Shadow_MakeTextures();
 515         maxshadowtriangles = 0;
 516         shadowelements = NULL;
 517         maxshadowvertices = 0;
 518         shadowvertex3f = NULL;
 519         maxvertexupdate = 0;
 520         vertexupdate = NULL;
 521         vertexremap = NULL;
 522         vertexupdatenum = 0;
 523         maxshadowmark = 0;
 524         numshadowmark = 0;
 525         shadowmark = NULL;
 526         shadowmarklist = NULL;
 527         shadowmarkcount = 0;
 528         maxshadowsides = 0;
 529         numshadowsides = 0;
 530         shadowsides = NULL;
 531         shadowsideslist = NULL;
 532         r_shadow_buffer_numleafpvsbytes = 0;
 533         r_shadow_buffer_visitingleafpvs = NULL;
 534         r_shadow_buffer_leafpvs = NULL;
 535         r_shadow_buffer_leaflist = NULL;
 536         r_shadow_buffer_numsurfacepvsbytes = 0;
 537         r_shadow_buffer_surfacepvs = NULL;
 538         r_shadow_buffer_surfacelist = NULL;
 539         r_shadow_buffer_surfacesides = NULL;
 540         r_shadow_buffer_numshadowtrispvsbytes = 0;
 541         r_shadow_buffer_shadowtrispvs = NULL;
 542         r_shadow_buffer_numlighttrispvsbytes = 0;
 543         r_shadow_buffer_lighttrispvs = NULL;
 544 }
 545
 546 void r_shadow_shutdown(void)
 547 {
 548         CHECKGLERROR
 549         R_Shadow_UncompileWorldLights();
 550
 551         R_Shadow_FreeShadowMaps();
 552
 553         CHECKGLERROR
 554         numcubemaps = 0;
 555         r_shadow_attenuationgradienttexture = NULL;
 556         r_shadow_attenuation2dtexture = NULL;
 557         r_shadow_attenuation3dtexture = NULL;
 558         R_FreeTexturePool(&r_shadow_texturepool);
 559         R_FreeTexturePool(&r_shadow_filters_texturepool);
 560         maxshadowtriangles = 0;
 561         if (shadowelements)
 562                 Mem_Free(shadowelements);
 563         shadowelements = NULL;
 564         if (shadowvertex3f)
 565                 Mem_Free(shadowvertex3f);
 566         shadowvertex3f = NULL;
 567         maxvertexupdate = 0;
 568         if (vertexupdate)
 569                 Mem_Free(vertexupdate);
 570         vertexupdate = NULL;
 571         if (vertexremap)
 572                 Mem_Free(vertexremap);
 573         vertexremap = NULL;
 574         vertexupdatenum = 0;
 575         maxshadowmark = 0;
 576         numshadowmark = 0;
 577         if (shadowmark)
 578                 Mem_Free(shadowmark);
 579         shadowmark = NULL;
 580         if (shadowmarklist)
 581                 Mem_Free(shadowmarklist);
 582         shadowmarklist = NULL;
 583         shadowmarkcount = 0;
 584         maxshadowsides = 0;
 585         numshadowsides = 0;
 586         if (shadowsides)
 587                 Mem_Free(shadowsides);
 588         shadowsides = NULL;
 589         if (shadowsideslist)
 590                 Mem_Free(shadowsideslist);
 591         shadowsideslist = NULL;
 592         r_shadow_buffer_numleafpvsbytes = 0;
 593         if (r_shadow_buffer_visitingleafpvs)
 594                 Mem_Free(r_shadow_buffer_visitingleafpvs);
 595         r_shadow_buffer_visitingleafpvs = NULL;
 596         if (r_shadow_buffer_leafpvs)
 597                 Mem_Free(r_shadow_buffer_leafpvs);
 598         r_shadow_buffer_leafpvs = NULL;
 599         if (r_shadow_buffer_leaflist)
 600                 Mem_Free(r_shadow_buffer_leaflist);
 601         r_shadow_buffer_leaflist = NULL;
 602         r_shadow_buffer_numsurfacepvsbytes = 0;
 603         if (r_shadow_buffer_surfacepvs)
 604                 Mem_Free(r_shadow_buffer_surfacepvs);
 605         r_shadow_buffer_surfacepvs = NULL;
 606         if (r_shadow_buffer_surfacelist)
 607                 Mem_Free(r_shadow_buffer_surfacelist);
 608         r_shadow_buffer_surfacelist = NULL;
 609         if (r_shadow_buffer_surfacesides)
 610                 Mem_Free(r_shadow_buffer_surfacesides);
 611         r_shadow_buffer_surfacesides = NULL;
 612         r_shadow_buffer_numshadowtrispvsbytes = 0;
 613         if (r_shadow_buffer_shadowtrispvs)
 614                 Mem_Free(r_shadow_buffer_shadowtrispvs);
 615         r_shadow_buffer_numlighttrispvsbytes = 0;
 616         if (r_shadow_buffer_lighttrispvs)
 617                 Mem_Free(r_shadow_buffer_lighttrispvs);
 618 }
 619
 620 void r_shadow_newmap(void)
 621 {
 622         if (cl.worldmodel && strncmp(cl.worldmodel->name, r_shadow_mapname, sizeof(r_shadow_mapname)))
 623                 R_Shadow_EditLights_Reload_f();
 624 }
 625
 626 void R_Shadow_Help_f(void)
 627 {
 628         Con_Printf(
 629 "Documentation on r_shadow system:\n"
 630 "Settings:\n"
 631 "r_shadow_bumpscale_basetexture : base texture as bumpmap with this scale\n"
 632 "r_shadow_bumpscale_bumpmap : depth scale for bumpmap conversion\n"
 633 "r_shadow_debuglight : render only this light number (-1 = all)\n"
 634 "r_shadow_gloss 0/1/2 : no gloss, gloss textures only, force gloss\n"
 635 "r_shadow_gloss2intensity : brightness of forced gloss\n"
 636 "r_shadow_glossintensity : brightness of textured gloss\n"
 637 "r_shadow_lightattenuationlinearscale : used to generate attenuation texture\n"
 638 "r_shadow_lightattenuationdividebias : used to generate attenuation texture\n"
 639 "r_shadow_lightintensityscale : scale rendering brightness of all lights\n"
 640 "r_shadow_lightradiusscale : scale rendering radius of all lights\n"
 641 "r_shadow_portallight : use portal visibility for static light precomputation\n"
 642 "r_shadow_projectdistance : shadow volume projection distance\n"
 643 "r_shadow_realtime_dlight : use high quality dynamic lights in normal mode\n"
 644 "r_shadow_realtime_dlight_shadows : cast shadows from dlights\n"
 645 "r_shadow_realtime_world : use high quality world lighting mode\n"
 646 "r_shadow_realtime_world_lightmaps : use lightmaps in addition to lights\n"
 647 "r_shadow_realtime_world_shadows : cast shadows from world lights\n"
 648 "r_shadow_realtime_world_compile : compile surface/visibility information\n"
 649 "r_shadow_realtime_world_compileshadow : compile shadow geometry\n"
 650 "r_shadow_scissor : use scissor optimization\n"
 651 "r_shadow_polygonfactor : nudge shadow volumes closer/further\n"
 652 "r_shadow_polygonoffset : nudge shadow volumes closer/further\n"
 653 "r_shadow_texture3d : use 3d attenuation texture (if hardware supports)\n"
 654 "r_showlighting : useful for performance testing; bright = slow!\n"
 655 "r_showshadowvolumes : useful for performance testing; bright = slow!\n"
 656 "Commands:\n"
 657 "r_shadow_help : this help\n"
 658         );
 659 }
 660
 661 void R_Shadow_Init(void)
 662 {
 663         Cvar_RegisterVariable(&r_shadow_bumpscale_basetexture);
 664         Cvar_RegisterVariable(&r_shadow_bumpscale_bumpmap);
 665         Cvar_RegisterVariable(&r_shadow_dot3);
 666         Cvar_RegisterVariable(&r_shadow_usenormalmap);
 667         Cvar_RegisterVariable(&r_shadow_debuglight);
 668         Cvar_RegisterVariable(&r_shadow_gloss);
 669         Cvar_RegisterVariable(&r_shadow_gloss2intensity);
 670         Cvar_RegisterVariable(&r_shadow_glossintensity);
 671         Cvar_RegisterVariable(&r_shadow_glossexponent);
 672         Cvar_RegisterVariable(&r_shadow_gloss2exponent);
 673         Cvar_RegisterVariable(&r_shadow_glossexact);
 674         Cvar_RegisterVariable(&r_shadow_lightattenuationdividebias);
 675         Cvar_RegisterVariable(&r_shadow_lightattenuationlinearscale);
 676         Cvar_RegisterVariable(&r_shadow_lightintensityscale);
 677         Cvar_RegisterVariable(&r_shadow_lightradiusscale);
 678         Cvar_RegisterVariable(&r_shadow_portallight);
 679         Cvar_RegisterVariable(&r_shadow_projectdistance);
 680         Cvar_RegisterVariable(&r_shadow_frontsidecasting);
 681         Cvar_RegisterVariable(&r_shadow_realtime_dlight);
 682         Cvar_RegisterVariable(&r_shadow_realtime_dlight_shadows);
 683         Cvar_RegisterVariable(&r_shadow_realtime_dlight_svbspculling);
 684         Cvar_RegisterVariable(&r_shadow_realtime_dlight_portalculling);
 685         Cvar_RegisterVariable(&r_shadow_realtime_world);
 686         Cvar_RegisterVariable(&r_shadow_realtime_world_lightmaps);
 687         Cvar_RegisterVariable(&r_shadow_realtime_world_shadows);
 688         Cvar_RegisterVariable(&r_shadow_realtime_world_compile);
 689         Cvar_RegisterVariable(&r_shadow_realtime_world_compileshadow);
 690         Cvar_RegisterVariable(&r_shadow_realtime_world_compilesvbsp);
 691         Cvar_RegisterVariable(&r_shadow_realtime_world_compileportalculling);
 692         Cvar_RegisterVariable(&r_shadow_scissor);
 693         Cvar_RegisterVariable(&r_shadow_shadowmapping);
 694         Cvar_RegisterVariable(&r_shadow_shadowmapping_vsdct);
 695         Cvar_RegisterVariable(&r_shadow_shadowmapping_texturetype);
 696         Cvar_RegisterVariable(&r_shadow_shadowmapping_filterquality);
 697         Cvar_RegisterVariable(&r_shadow_shadowmapping_depthbits);
 698         Cvar_RegisterVariable(&r_shadow_shadowmapping_precision);
 699         Cvar_RegisterVariable(&r_shadow_shadowmapping_maxsize);
 700         Cvar_RegisterVariable(&r_shadow_shadowmapping_minsize);
 701 //      Cvar_RegisterVariable(&r_shadow_shadowmapping_lod_bias);
 702 //      Cvar_RegisterVariable(&r_shadow_shadowmapping_lod_scale);
 703         Cvar_RegisterVariable(&r_shadow_shadowmapping_bordersize);
 704         Cvar_RegisterVariable(&r_shadow_shadowmapping_nearclip);
 705         Cvar_RegisterVariable(&r_shadow_shadowmapping_bias);
 706         Cvar_RegisterVariable(&r_shadow_shadowmapping_polygonfactor);
 707         Cvar_RegisterVariable(&r_shadow_shadowmapping_polygonoffset);
 708         Cvar_RegisterVariable(&r_shadow_culltriangles);
 709         Cvar_RegisterVariable(&r_shadow_polygonfactor);
 710         Cvar_RegisterVariable(&r_shadow_polygonoffset);
 711         Cvar_RegisterVariable(&r_shadow_texture3d);
 712         Cvar_RegisterVariable(&r_coronas);
 713         Cvar_RegisterVariable(&r_coronas_occlusionsizescale);
 714         Cvar_RegisterVariable(&r_coronas_occlusionquery);
 715         Cvar_RegisterVariable(&gl_flashblend);
 716         Cvar_RegisterVariable(&gl_ext_separatestencil);
 717         Cvar_RegisterVariable(&gl_ext_stenciltwoside);
 718         if (gamemode == GAME_TENEBRAE)
 719         {
 720                 Cvar_SetValue("r_shadow_gloss", 2);
 721                 Cvar_SetValue("r_shadow_bumpscale_basetexture", 4);
 722         }
 723         Cmd_AddCommand("r_shadow_help", R_Shadow_Help_f, "prints documentation on console commands and variables used by realtime lighting and shadowing system");
 724         R_Shadow_EditLights_Init();
 725         Mem_ExpandableArray_NewArray(&r_shadow_worldlightsarray, r_main_mempool, sizeof(dlight_t), 128);
 726         maxshadowtriangles = 0;
 727         shadowelements = NULL;
 728         maxshadowvertices = 0;
 729         shadowvertex3f = NULL;
 730         maxvertexupdate = 0;
 731         vertexupdate = NULL;
 732         vertexremap = NULL;
 733         vertexupdatenum = 0;
 734         maxshadowmark = 0;
 735         numshadowmark = 0;
 736         shadowmark = NULL;
 737         shadowmarklist = NULL;
 738         shadowmarkcount = 0;
 739         maxshadowsides = 0;
 740         numshadowsides = 0;
 741         shadowsides = NULL;
 742         shadowsideslist = NULL;
 743         r_shadow_buffer_numleafpvsbytes = 0;
 744         r_shadow_buffer_visitingleafpvs = NULL;
 745         r_shadow_buffer_leafpvs = NULL;
 746         r_shadow_buffer_leaflist = NULL;
 747         r_shadow_buffer_numsurfacepvsbytes = 0;
 748         r_shadow_buffer_surfacepvs = NULL;
 749         r_shadow_buffer_surfacelist = NULL;
 750         r_shadow_buffer_surfacesides = NULL;
 751         r_shadow_buffer_shadowtrispvs = NULL;
 752         r_shadow_buffer_lighttrispvs = NULL;
 753         R_RegisterModule("R_Shadow", r_shadow_start, r_shadow_shutdown, r_shadow_newmap);
 754 }
 755
 756 matrix4x4_t matrix_attenuationxyz =
 757 {
 758         {
 759                 {0.5, 0.0, 0.0, 0.5},
 760                 {0.0, 0.5, 0.0, 0.5},
 761                 {0.0, 0.0, 0.5, 0.5},
 762                 {0.0, 0.0, 0.0, 1.0}
 763         }
 764 };
 765
 766 matrix4x4_t matrix_attenuationz =
 767 {
 768         {
 769                 {0.0, 0.0, 0.5, 0.5},
 770                 {0.0, 0.0, 0.0, 0.5},
 771                 {0.0, 0.0, 0.0, 0.5},
 772                 {0.0, 0.0, 0.0, 1.0}
 773         }
 774 };
 775
 776 void R_Shadow_ResizeShadowArrays(int numvertices, int numtriangles, int vertscale, int triscale)
 777 {
 778         numvertices = ((numvertices + 255) & ~255) * vertscale;
 779         numtriangles = ((numtriangles + 255) & ~255) * triscale;
 780         // make sure shadowelements is big enough for this volume
 781         if (maxshadowtriangles < numtriangles)
 782         {
 783                 maxshadowtriangles = numtriangles;
 784                 if (shadowelements)
 785                         Mem_Free(shadowelements);
 786                 shadowelements = (int *)Mem_Alloc(r_main_mempool, maxshadowtriangles * sizeof(int[3]));
 787         }
 788         // make sure shadowvertex3f is big enough for this volume
 789         if (maxshadowvertices < numvertices)
 790         {
 791                 maxshadowvertices = numvertices;
 792                 if (shadowvertex3f)
 793                         Mem_Free(shadowvertex3f);
 794                 shadowvertex3f = (float *)Mem_Alloc(r_main_mempool, maxshadowvertices * sizeof(float[3]));
 795         }
 796 }
 797
 798 static void R_Shadow_EnlargeLeafSurfaceTrisBuffer(int numleafs, int numsurfaces, int numshadowtriangles, int numlighttriangles)
 799 {
 800         int numleafpvsbytes = (((numleafs + 7) >> 3) + 255) & ~255;
 801         int numsurfacepvsbytes = (((numsurfaces + 7) >> 3) + 255) & ~255;
 802         int numshadowtrispvsbytes = (((numshadowtriangles + 7) >> 3) + 255) & ~255;
 803         int numlighttrispvsbytes = (((numlighttriangles + 7) >> 3) + 255) & ~255;
 804         if (r_shadow_buffer_numleafpvsbytes < numleafpvsbytes)
 805         {
 806                 if (r_shadow_buffer_visitingleafpvs)
 807                         Mem_Free(r_shadow_buffer_visitingleafpvs);
 808                 if (r_shadow_buffer_leafpvs)
 809                         Mem_Free(r_shadow_buffer_leafpvs);
 810                 if (r_shadow_buffer_leaflist)
 811                         Mem_Free(r_shadow_buffer_leaflist);
 812                 r_shadow_buffer_numleafpvsbytes = numleafpvsbytes;
 813                 r_shadow_buffer_visitingleafpvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numleafpvsbytes);
 814                 r_shadow_buffer_leafpvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numleafpvsbytes);
 815                 r_shadow_buffer_leaflist = (int *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numleafpvsbytes * 8 * sizeof(*r_shadow_buffer_leaflist));
 816         }
 817         if (r_shadow_buffer_numsurfacepvsbytes < numsurfacepvsbytes)
 818         {
 819                 if (r_shadow_buffer_surfacepvs)
 820                         Mem_Free(r_shadow_buffer_surfacepvs);
 821                 if (r_shadow_buffer_surfacelist)
 822                         Mem_Free(r_shadow_buffer_surfacelist);
 823                 if (r_shadow_buffer_surfacesides)
 824                         Mem_Free(r_shadow_buffer_surfacesides);
 825                 r_shadow_buffer_numsurfacepvsbytes = numsurfacepvsbytes;
 826                 r_shadow_buffer_surfacepvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numsurfacepvsbytes);
 827                 r_shadow_buffer_surfacelist = (int *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numsurfacepvsbytes * 8 * sizeof(*r_shadow_buffer_surfacelist));
 828                 r_shadow_buffer_surfacesides = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numsurfacepvsbytes * 8 * sizeof(*r_shadow_buffer_surfacelist));
 829         }
 830         if (r_shadow_buffer_numshadowtrispvsbytes < numshadowtrispvsbytes)
 831         {
 832                 if (r_shadow_buffer_shadowtrispvs)
 833                         Mem_Free(r_shadow_buffer_shadowtrispvs);
 834                 r_shadow_buffer_numshadowtrispvsbytes = numshadowtrispvsbytes;
 835                 r_shadow_buffer_shadowtrispvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numshadowtrispvsbytes);
 836         }
 837         if (r_shadow_buffer_numlighttrispvsbytes < numlighttrispvsbytes)
 838         {
 839                 if (r_shadow_buffer_lighttrispvs)
 840                         Mem_Free(r_shadow_buffer_lighttrispvs);
 841                 r_shadow_buffer_numlighttrispvsbytes = numlighttrispvsbytes;
 842                 r_shadow_buffer_lighttrispvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numlighttrispvsbytes);
 843         }
 844 }
 845
 846 void R_Shadow_PrepareShadowMark(int numtris)
 847 {
 848         // make sure shadowmark is big enough for this volume
 849         if (maxshadowmark < numtris)
 850         {
 851                 maxshadowmark = numtris;
 852                 if (shadowmark)
 853                         Mem_Free(shadowmark);
 854                 if (shadowmarklist)
 855                         Mem_Free(shadowmarklist);
 856                 shadowmark = (int *)Mem_Alloc(r_main_mempool, maxshadowmark * sizeof(*shadowmark));
 857                 shadowmarklist = (int *)Mem_Alloc(r_main_mempool, maxshadowmark * sizeof(*shadowmarklist));
 858                 shadowmarkcount = 0;
 859         }
 860         shadowmarkcount++;
 861         // if shadowmarkcount wrapped we clear the array and adjust accordingly
 862         if (shadowmarkcount == 0)
 863         {
 864                 shadowmarkcount = 1;
 865                 memset(shadowmark, 0, maxshadowmark * sizeof(*shadowmark));
 866         }
 867         numshadowmark = 0;
 868 }
 869
 870 void R_Shadow_PrepareShadowSides(int numtris)
 871 {
 872     if (maxshadowsides < numtris)
 873     {
 874         maxshadowsides = numtris;
 875         if (shadowsides)
 876                         Mem_Free(shadowsides);
 877                 if (shadowsideslist)
 878                         Mem_Free(shadowsideslist);
 879                 shadowsides = (unsigned char *)Mem_Alloc(r_main_mempool, maxshadowsides * sizeof(*shadowsides));
 880                 shadowsideslist = (int *)Mem_Alloc(r_main_mempool, maxshadowsides * sizeof(*shadowsideslist));
 881         }
 882         numshadowsides = 0;
 883 }
 884
 885 static int R_Shadow_ConstructShadowVolume_ZFail(int innumvertices, int innumtris, const int *inelement3i, const int *inneighbor3i, const float *invertex3f, int *outnumvertices, int *outelement3i, float *outvertex3f, const float *projectorigin, const float *projectdirection, float projectdistance, int numshadowmarktris, const int *shadowmarktris)
 886 {
 887         int i, j;
 888         int outtriangles = 0, outvertices = 0;
 889         const int *element;
 890         const float *vertex;
 891         float ratio, direction[3], projectvector[3];
 892
 893         if (projectdirection)
 894                 VectorScale(projectdirection, projectdistance, projectvector);
 895         else
 896                 VectorClear(projectvector);
 897
 898         // create the vertices
 899         if (projectdirection)
 900         {
 901                 for (i = 0;i < numshadowmarktris;i++)
 902                 {
 903                         element = inelement3i + shadowmarktris[i] * 3;
 904                         for (j = 0;j < 3;j++)
 905                         {
 906                                 if (vertexupdate[element[j]] != vertexupdatenum)
 907                                 {
 908                                         vertexupdate[element[j]] = vertexupdatenum;
 909                                         vertexremap[element[j]] = outvertices;
 910                                         vertex = invertex3f + element[j] * 3;
 911                                         // project one copy of the vertex according to projectvector
 912                                         VectorCopy(vertex, outvertex3f);
 913                                         VectorAdd(vertex, projectvector, (outvertex3f + 3));
 914                                         outvertex3f += 6;
 915                                         outvertices += 2;
 916                                 }
 917                         }
 918                 }
 919         }
 920         else
 921         {
 922                 for (i = 0;i < numshadowmarktris;i++)
 923                 {
 924                         element = inelement3i + shadowmarktris[i] * 3;
 925                         for (j = 0;j < 3;j++)
 926                         {
 927                                 if (vertexupdate[element[j]] != vertexupdatenum)
 928                                 {
 929                                         vertexupdate[element[j]] = vertexupdatenum;
 930                                         vertexremap[element[j]] = outvertices;
 931                                         vertex = invertex3f + element[j] * 3;
 932                                         // project one copy of the vertex to the sphere radius of the light
 933                                         // (FIXME: would projecting it to the light box be better?)
 934                                         VectorSubtract(vertex, projectorigin, direction);
 935                                         ratio = projectdistance / VectorLength(direction);
 936                                         VectorCopy(vertex, outvertex3f);
 937                                         VectorMA(projectorigin, ratio, direction, (outvertex3f + 3));
 938                                         outvertex3f += 6;
 939                                         outvertices += 2;
 940                                 }
 941                         }
 942                 }
 943         }
 944
 945         if (r_shadow_frontsidecasting.integer)
 946         {
 947                 for (i = 0;i < numshadowmarktris;i++)
 948                 {
 949                         int remappedelement[3];
 950                         int markindex;
 951                         const int *neighbortriangle;
 952
 953                         markindex = shadowmarktris[i] * 3;
 954                         element = inelement3i + markindex;
 955                         neighbortriangle = inneighbor3i + markindex;
 956                         // output the front and back triangles
 957                         outelement3i[0] = vertexremap[element[0]];
 958                         outelement3i[1] = vertexremap[element[1]];
 959                         outelement3i[2] = vertexremap[element[2]];
 960                         outelement3i[3] = vertexremap[element[2]] + 1;
 961                         outelement3i[4] = vertexremap[element[1]] + 1;
 962                         outelement3i[5] = vertexremap[element[0]] + 1;
 963
 964                         outelement3i += 6;
 965                         outtriangles += 2;
 966                         // output the sides (facing outward from this triangle)
 967                         if (shadowmark[neighbortriangle[0]] != shadowmarkcount)
 968                         {
 969                                 remappedelement[0] = vertexremap[element[0]];
 970                                 remappedelement[1] = vertexremap[element[1]];
 971                                 outelement3i[0] = remappedelement[1];
 972                                 outelement3i[1] = remappedelement[0];
 973                                 outelement3i[2] = remappedelement[0] + 1;
 974                                 outelement3i[3] = remappedelement[1];
 975                                 outelement3i[4] = remappedelement[0] + 1;
 976                                 outelement3i[5] = remappedelement[1] + 1;
 977
 978                                 outelement3i += 6;
 979                                 outtriangles += 2;
 980                         }
 981                         if (shadowmark[neighbortriangle[1]] != shadowmarkcount)
 982                         {
 983                                 remappedelement[1] = vertexremap[element[1]];
 984                                 remappedelement[2] = vertexremap[element[2]];
 985                                 outelement3i[0] = remappedelement[2];
 986                                 outelement3i[1] = remappedelement[1];
 987                                 outelement3i[2] = remappedelement[1] + 1;
 988                                 outelement3i[3] = remappedelement[2];
 989                                 outelement3i[4] = remappedelement[1] + 1;
 990                                 outelement3i[5] = remappedelement[2] + 1;
 991
 992                                 outelement3i += 6;
 993                                 outtriangles += 2;
 994                         }
 995                         if (shadowmark[neighbortriangle[2]] != shadowmarkcount)
 996                         {
 997                                 remappedelement[0] = vertexremap[element[0]];
 998                                 remappedelement[2] = vertexremap[element[2]];
 999                                 outelement3i[0] = remappedelement[0];
1000                                 outelement3i[1] = remappedelement[2];
1001                                 outelement3i[2] = remappedelement[2] + 1;
1002                                 outelement3i[3] = remappedelement[0];
1003                                 outelement3i[4] = remappedelement[2] + 1;
1004                                 outelement3i[5] = remappedelement[0] + 1;
1005
1006                                 outelement3i += 6;
1007                                 outtriangles += 2;
1008                         }
1009                 }
1010         }
1011         else
1012         {
1013                 for (i = 0;i < numshadowmarktris;i++)
1014                 {
1015                         int remappedelement[3];
1016                         int markindex;
1017                         const int *neighbortriangle;
1018
1019                         markindex = shadowmarktris[i] * 3;
1020                         element = inelement3i + markindex;
1021                         neighbortriangle = inneighbor3i + markindex;
1022                         // output the front and back triangles
1023                         outelement3i[0] = vertexremap[element[2]];
1024                         outelement3i[1] = vertexremap[element[1]];
1025                         outelement3i[2] = vertexremap[element[0]];
1026                         outelement3i[3] = vertexremap[element[0]] + 1;
1027                         outelement3i[4] = vertexremap[element[1]] + 1;
1028                         outelement3i[5] = vertexremap[element[2]] + 1;
1029
1030                         outelement3i += 6;
1031                         outtriangles += 2;
1032                         // output the sides (facing outward from this triangle)
1033                         if (shadowmark[neighbortriangle[0]] != shadowmarkcount)
1034                         {
1035                                 remappedelement[0] = vertexremap[element[0]];
1036                                 remappedelement[1] = vertexremap[element[1]];
1037                                 outelement3i[0] = remappedelement[0];
1038                                 outelement3i[1] = remappedelement[1];
1039                                 outelement3i[2] = remappedelement[1] + 1;
1040                                 outelement3i[3] = remappedelement[0];
1041                                 outelement3i[4] = remappedelement[1] + 1;
1042                                 outelement3i[5] = remappedelement[0] + 1;
1043
1044                                 outelement3i += 6;
1045                                 outtriangles += 2;
1046                         }
1047                         if (shadowmark[neighbortriangle[1]] != shadowmarkcount)
1048                         {
1049                                 remappedelement[1] = vertexremap[element[1]];
1050                                 remappedelement[2] = vertexremap[element[2]];
1051                                 outelement3i[0] = remappedelement[1];
1052                                 outelement3i[1] = remappedelement[2];
1053                                 outelement3i[2] = remappedelement[2] + 1;
1054                                 outelement3i[3] = remappedelement[1];
1055                                 outelement3i[4] = remappedelement[2] + 1;
1056                                 outelement3i[5] = remappedelement[1] + 1;
1057
1058                                 outelement3i += 6;
1059                                 outtriangles += 2;
1060                         }
1061                         if (shadowmark[neighbortriangle[2]] != shadowmarkcount)
1062                         {
1063                                 remappedelement[0] = vertexremap[element[0]];
1064                                 remappedelement[2] = vertexremap[element[2]];
1065                                 outelement3i[0] = remappedelement[2];
1066                                 outelement3i[1] = remappedelement[0];
1067                                 outelement3i[2] = remappedelement[0] + 1;
1068                                 outelement3i[3] = remappedelement[2];
1069                                 outelement3i[4] = remappedelement[0] + 1;
1070                                 outelement3i[5] = remappedelement[2] + 1;
1071
1072                                 outelement3i += 6;
1073                                 outtriangles += 2;
1074                         }
1075                 }
1076         }
1077         if (outnumvertices)
1078                 *outnumvertices = outvertices;
1079         return outtriangles;
1080 }
1081
1082 static int R_Shadow_ConstructShadowVolume_ZPass(int innumvertices, int innumtris, const int *inelement3i, const int *inneighbor3i, const float *invertex3f, int *outnumvertices, int *outelement3i, float *outvertex3f, const float *projectorigin, const float *projectdirection, float projectdistance, int numshadowmarktris, const int *shadowmarktris)
1083 {
1084         int i, j, k;
1085         int outtriangles = 0, outvertices = 0;
1086         const int *element;
1087         const float *vertex;
1088         float ratio, direction[3], projectvector[3];
1089         qboolean side[4];
1090
1091         if (projectdirection)
1092                 VectorScale(projectdirection, projectdistance, projectvector);
1093         else
1094                 VectorClear(projectvector);
1095
1096         for (i = 0;i < numshadowmarktris;i++)
1097         {
1098                 int remappedelement[3];
1099                 int markindex;
1100                 const int *neighbortriangle;
1101
1102                 markindex = shadowmarktris[i] * 3;
1103                 neighbortriangle = inneighbor3i + markindex;
1104                 side[0] = shadowmark[neighbortriangle[0]] == shadowmarkcount;
1105                 side[1] = shadowmark[neighbortriangle[1]] == shadowmarkcount;
1106                 side[2] = shadowmark[neighbortriangle[2]] == shadowmarkcount;
1107                 if (side[0] + side[1] + side[2] == 0)
1108                         continue;
1109
1110                 side[3] = side[0];
1111                 element = inelement3i + markindex;
1112
1113                 // create the vertices
1114                 for (j = 0;j < 3;j++)
1115                 {
1116                         if (side[j] + side[j+1] == 0)
1117                                 continue;
1118                         k = element[j];
1119                         if (vertexupdate[k] != vertexupdatenum)
1120                         {
1121                                 vertexupdate[k] = vertexupdatenum;
1122                                 vertexremap[k] = outvertices;
1123                                 vertex = invertex3f + k * 3;
1124                                 VectorCopy(vertex, outvertex3f);
1125                                 if (projectdirection)
1126                                 {
1127                                         // project one copy of the vertex according to projectvector
1128                                         VectorAdd(vertex, projectvector, (outvertex3f + 3));
1129                                 }
1130                                 else
1131                                 {
1132                                         // project one copy of the vertex to the sphere radius of the light
1133                                         // (FIXME: would projecting it to the light box be better?)
1134                                         VectorSubtract(vertex, projectorigin, direction);
1135                                         ratio = projectdistance / VectorLength(direction);
1136                                         VectorMA(projectorigin, ratio, direction, (outvertex3f + 3));
1137                                 }
1138                                 outvertex3f += 6;
1139                                 outvertices += 2;
1140                         }
1141                 }
1142
1143                 // output the sides (facing outward from this triangle)
1144                 if (!side[0])
1145                 {
1146                         remappedelement[0] = vertexremap[element[0]];
1147                         remappedelement[1] = vertexremap[element[1]];
1148                         outelement3i[0] = remappedelement[1];
1149                         outelement3i[1] = remappedelement[0];
1150                         outelement3i[2] = remappedelement[0] + 1;
1151                         outelement3i[3] = remappedelement[1];
1152                         outelement3i[4] = remappedelement[0] + 1;
1153                         outelement3i[5] = remappedelement[1] + 1;
1154
1155                         outelement3i += 6;
1156                         outtriangles += 2;
1157                 }
1158                 if (!side[1])
1159                 {
1160                         remappedelement[1] = vertexremap[element[1]];
1161                         remappedelement[2] = vertexremap[element[2]];
1162                         outelement3i[0] = remappedelement[2];
1163                         outelement3i[1] = remappedelement[1];
1164                         outelement3i[2] = remappedelement[1] + 1;
1165                         outelement3i[3] = remappedelement[2];
1166                         outelement3i[4] = remappedelement[1] + 1;
1167                         outelement3i[5] = remappedelement[2] + 1;
1168
1169                         outelement3i += 6;
1170                         outtriangles += 2;
1171                 }
1172                 if (!side[2])
1173                 {
1174                         remappedelement[0] = vertexremap[element[0]];
1175                         remappedelement[2] = vertexremap[element[2]];
1176                         outelement3i[0] = remappedelement[0];
1177                         outelement3i[1] = remappedelement[2];
1178                         outelement3i[2] = remappedelement[2] + 1;
1179                         outelement3i[3] = remappedelement[0];
1180                         outelement3i[4] = remappedelement[2] + 1;
1181                         outelement3i[5] = remappedelement[0] + 1;
1182
1183                         outelement3i += 6;
1184                         outtriangles += 2;
1185                 }
1186         }
1187         if (outnumvertices)
1188                 *outnumvertices = outvertices;
1189         return outtriangles;
1190 }
1191
1192 void R_Shadow_MarkVolumeFromBox(int firsttriangle, int numtris, const float *invertex3f, const int *elements, const vec3_t projectorigin, const vec3_t projectdirection, const vec3_t lightmins, const vec3_t lightmaxs, const vec3_t surfacemins, const vec3_t surfacemaxs)
1193 {
1194         int t, tend;
1195         const int *e;
1196         const float *v[3];
1197         float normal[3];
1198         if (!BoxesOverlap(lightmins, lightmaxs, surfacemins, surfacemaxs))
1199                 return;
1200         tend = firsttriangle + numtris;
1201         if (BoxInsideBox(surfacemins, surfacemaxs, lightmins, lightmaxs))
1202         {
1203                 // surface box entirely inside light box, no box cull
1204                 if (projectdirection)
1205                 {
1206                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1207                         {
1208                                 TriangleNormal(invertex3f + e[0] * 3, invertex3f + e[1] * 3, invertex3f + e[2] * 3, normal);
1209                                 if (r_shadow_frontsidecasting.integer == (DotProduct(normal, projectdirection) < 0))
1210                                         shadowmarklist[numshadowmark++] = t;
1211                         }
1212                 }
1213                 else
1214                 {
1215                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1216                                 if (r_shadow_frontsidecasting.integer == PointInfrontOfTriangle(projectorigin, invertex3f + e[0] * 3, invertex3f + e[1] * 3, invertex3f + e[2] * 3))
1217                                         shadowmarklist[numshadowmark++] = t;
1218                 }
1219         }
1220         else
1221         {
1222                 // surface box not entirely inside light box, cull each triangle
1223                 if (projectdirection)
1224                 {
1225                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1226                         {
1227                                 v[0] = invertex3f + e[0] * 3;
1228                                 v[1] = invertex3f + e[1] * 3;
1229                                 v[2] = invertex3f + e[2] * 3;
1230                                 TriangleNormal(v[0], v[1], v[2], normal);
1231                                 if (r_shadow_frontsidecasting.integer == (DotProduct(normal, projectdirection) < 0)
1232                                  && TriangleOverlapsBox(v[0], v[1], v[2], lightmins, lightmaxs))
1233                                         shadowmarklist[numshadowmark++] = t;
1234                         }
1235                 }
1236                 else
1237                 {
1238                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1239                         {
1240                                 v[0] = invertex3f + e[0] * 3;
1241                                 v[1] = invertex3f + e[1] * 3;
1242                                 v[2] = invertex3f + e[2] * 3;
1243                                 if (r_shadow_frontsidecasting.integer == PointInfrontOfTriangle(projectorigin, v[0], v[1], v[2])
1244                                  && TriangleOverlapsBox(v[0], v[1], v[2], lightmins, lightmaxs))
1245                                         shadowmarklist[numshadowmark++] = t;
1246                         }
1247                 }
1248         }
1249 }
1250
1251 qboolean R_Shadow_UseZPass(vec3_t mins, vec3_t maxs)
1252 {
1253 #if 1
1254         return false;
1255 #else
1256         if (r_shadow_compilingrtlight || !r_shadow_frontsidecasting.integer || !r_shadow_usezpassifpossible.integer)
1257                 return false;
1258         // check if the shadow volume intersects the near plane
1259         //
1260         // a ray between the eye and light origin may intersect the caster,
1261         // indicating that the shadow may touch the eye location, however we must
1262         // test the near plane (a polygon), not merely the eye location, so it is
1263         // easiest to enlarge the caster bounding shape slightly for this.
1264         // TODO
1265         return true;
1266 #endif
1267 }
1268
1269 void R_Shadow_VolumeFromList(int numverts, int numtris, const float *invertex3f, const int *elements, const int *neighbors, const vec3_t projectorigin, const vec3_t projectdirection, float projectdistance, int nummarktris, const int *marktris, vec3_t trismins, vec3_t trismaxs)
1270 {
1271         int i, tris, outverts;
1272         if (projectdistance < 0.1)
1273         {
1274                 Con_Printf("R_Shadow_Volume: projectdistance %f\n", projectdistance);
1275                 return;
1276         }
1277         if (!numverts || !nummarktris)
1278                 return;
1279         // make sure shadowelements is big enough for this volume
1280         if (maxshadowtriangles < nummarktris*8 || maxshadowvertices < numverts*2)
1281                 R_Shadow_ResizeShadowArrays(numverts, nummarktris, 2, 8);
1282
1283         if (maxvertexupdate < numverts)
1284         {
1285                 maxvertexupdate = numverts;
1286                 if (vertexupdate)
1287                         Mem_Free(vertexupdate);
1288                 if (vertexremap)
1289                         Mem_Free(vertexremap);
1290                 vertexupdate = (int *)Mem_Alloc(r_main_mempool, maxvertexupdate * sizeof(int));
1291                 vertexremap = (int *)Mem_Alloc(r_main_mempool, maxvertexupdate * sizeof(int));
1292                 vertexupdatenum = 0;
1293         }
1294         vertexupdatenum++;
1295         if (vertexupdatenum == 0)
1296         {
1297                 vertexupdatenum = 1;
1298                 memset(vertexupdate, 0, maxvertexupdate * sizeof(int));
1299                 memset(vertexremap, 0, maxvertexupdate * sizeof(int));
1300         }
1301
1302         for (i = 0;i < nummarktris;i++)
1303                 shadowmark[marktris[i]] = shadowmarkcount;
1304
1305         if (r_shadow_compilingrtlight)
1306         {
1307                 // if we're compiling an rtlight, capture the mesh
1308                 //tris = R_Shadow_ConstructShadowVolume_ZPass(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1309                 //Mod_ShadowMesh_AddMesh(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_zpass, NULL, NULL, NULL, shadowvertex3f, NULL, NULL, NULL, NULL, tris, shadowelements);
1310                 tris = R_Shadow_ConstructShadowVolume_ZFail(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1311                 Mod_ShadowMesh_AddMesh(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_zfail, NULL, NULL, NULL, shadowvertex3f, NULL, NULL, NULL, NULL, tris, shadowelements);
1312         }
1313         else
1314         {
1315                 // decide which type of shadow to generate and set stencil mode
1316                 R_Shadow_RenderMode_StencilShadowVolumes(R_Shadow_UseZPass(trismins, trismaxs));
1317                 // generate the sides or a solid volume, depending on type
1318                 if (r_shadow_rendermode >= R_SHADOW_RENDERMODE_ZPASS_STENCIL && r_shadow_rendermode <= R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE)
1319                         tris = R_Shadow_ConstructShadowVolume_ZPass(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1320                 else
1321                         tris = R_Shadow_ConstructShadowVolume_ZFail(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1322                 r_refdef.stats.lights_dynamicshadowtriangles += tris;
1323                 r_refdef.stats.lights_shadowtriangles += tris;
1324                 CHECKGLERROR
1325                 R_Mesh_VertexPointer(shadowvertex3f, 0, 0);
1326                 GL_LockArrays(0, outverts);
1327                 if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZPASS_STENCIL)
1328                 {
1329                         // increment stencil if frontface is infront of depthbuffer
1330                         GL_CullFace(r_refdef.view.cullface_front);
1331                         qglStencilOp(GL_KEEP, GL_KEEP, GL_DECR);CHECKGLERROR
1332                         R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, 0);
1333                         // decrement stencil if backface is infront of depthbuffer
1334                         GL_CullFace(r_refdef.view.cullface_back);
1335                         qglStencilOp(GL_KEEP, GL_KEEP, GL_INCR);CHECKGLERROR
1336                 }
1337                 else if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZFAIL_STENCIL)
1338                 {
1339                         // decrement stencil if backface is behind depthbuffer
1340                         GL_CullFace(r_refdef.view.cullface_front);
1341                         qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);CHECKGLERROR
1342                         R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, 0);
1343                         // increment stencil if frontface is behind depthbuffer
1344                         GL_CullFace(r_refdef.view.cullface_back);
1345                         qglStencilOp(GL_KEEP, GL_INCR, GL_KEEP);CHECKGLERROR
1346                 }
1347                 R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, 0);
1348                 GL_LockArrays(0, 0);
1349                 CHECKGLERROR
1350         }
1351 }
1352
1353 int R_Shadow_CalcTriangleSideMask(const vec3_t p1, const vec3_t p2, const vec3_t p3, float bias)
1354 {
1355     // p1, p2, p3 are in the cubemap's local coordinate system
1356     // bias = border/(size - border)
1357         int mask = 0x3F;
1358
1359     float dp1 = p1[0] + p1[1], dn1 = p1[0] - p1[1], ap1 = fabs(dp1), an1 = fabs(dn1),
1360           dp2 = p2[0] + p2[1], dn2 = p2[0] - p2[1], ap2 = fabs(dp2), an2 = fabs(dn2),
1361           dp3 = p3[0] + p3[1], dn3 = p3[0] - p3[1], ap3 = fabs(dp3), an3 = fabs(dn3);
1362         if(ap1 > bias*an1 && ap2 > bias*an2 && ap3 > bias*an3)
1363         mask &= (3<<4)
1364                         | (dp1 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2))
1365                         | (dp2 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2))
1366                         | (dp3 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
1367     if(an1 > bias*ap1 && an2 > bias*ap2 && an3 > bias*ap3)
1368         mask &= (3<<4)
1369             | (dn1 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2))
1370             | (dn2 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2))
1371             | (dn3 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
1372
1373     dp1 = p1[1] + p1[2], dn1 = p1[1] - p1[2], ap1 = fabs(dp1), an1 = fabs(dn1),
1374     dp2 = p2[1] + p2[2], dn2 = p2[1] - p2[2], ap2 = fabs(dp2), an2 = fabs(dn2),
1375     dp3 = p3[1] + p3[2], dn3 = p3[1] - p3[2], ap3 = fabs(dp3), an3 = fabs(dn3);
1376     if(ap1 > bias*an1 && ap2 > bias*an2 && ap3 > bias*an3)
1377         mask &= (3<<0)
1378             | (dp1 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4))
1379             | (dp2 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4))
1380             | (dp3 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
1381     if(an1 > bias*ap1 && an2 > bias*ap2 && an3 > bias*ap3)
1382         mask &= (3<<0)
1383             | (dn1 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4))
1384             | (dn2 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4))
1385             | (dn3 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
1386
1387     dp1 = p1[2] + p1[0], dn1 = p1[2] - p1[0], ap1 = fabs(dp1), an1 = fabs(dn1),
1388     dp2 = p2[2] + p2[0], dn2 = p2[2] - p2[0], ap2 = fabs(dp2), an2 = fabs(dn2),
1389     dp3 = p3[2] + p3[0], dn3 = p3[2] - p3[0], ap3 = fabs(dp3), an3 = fabs(dn3);
1390     if(ap1 > bias*an1 && ap2 > bias*an2 && ap3 > bias*an3)
1391         mask &= (3<<2)
1392             | (dp1 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0))
1393             | (dp2 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0))
1394             | (dp3 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
1395     if(an1 > bias*ap1 && an2 > bias*ap2 && an3 > bias*ap3)
1396         mask &= (3<<2)
1397             | (dn1 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0))
1398             | (dn2 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0))
1399             | (dn3 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
1400
1401         return mask;
1402 }
1403
1404 int R_Shadow_CalcBBoxSideMask(const vec3_t mins, const vec3_t maxs, const matrix4x4_t *worldtolight, const matrix4x4_t *radiustolight, float bias)
1405 {
1406         vec3_t center, radius, lightcenter, lightradius, pmin, pmax;
1407         float dp1, dn1, ap1, an1, dp2, dn2, ap2, an2;
1408         int mask = 0x3F;
1409
1410         VectorSubtract(maxs, mins, radius);
1411     VectorScale(radius, 0.5f, radius);
1412     VectorAdd(mins, radius, center);
1413     Matrix4x4_Transform(worldtolight, center, lightcenter);
1414         Matrix4x4_Transform3x3(radiustolight, radius, lightradius);
1415         VectorSubtract(lightcenter, lightradius, pmin);
1416         VectorAdd(lightcenter, lightradius, pmax);
1417
1418     dp1 = pmax[0] + pmax[1], dn1 = pmax[0] - pmin[1], ap1 = fabs(dp1), an1 = fabs(dn1),
1419     dp2 = pmin[0] + pmin[1], dn2 = pmin[0] - pmax[1], ap2 = fabs(dp2), an2 = fabs(dn2);
1420     if(ap1 > bias*an1 && ap2 > bias*an2)
1421         mask &= (3<<4)
1422             | (dp1 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2))
1423             | (dp2 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
1424     if(an1 > bias*ap1 && an2 > bias*ap2)
1425         mask &= (3<<4)
1426             | (dn1 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2))
1427             | (dn2 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
1428
1429     dp1 = pmax[1] + pmax[2], dn1 = pmax[1] - pmin[2], ap1 = fabs(dp1), an1 = fabs(dn1),
1430     dp2 = pmin[1] + pmin[2], dn2 = pmin[1] - pmax[2], ap2 = fabs(dp2), an2 = fabs(dn2);
1431     if(ap1 > bias*an1 && ap2 > bias*an2)
1432         mask &= (3<<0)
1433             | (dp1 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4))
1434             | (dp2 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
1435     if(an1 > bias*ap1 && an2 > bias*ap2)
1436         mask &= (3<<0)
1437             | (dn1 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4))
1438             | (dn2 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
1439
1440     dp1 = pmax[2] + pmax[0], dn1 = pmax[2] - pmin[0], ap1 = fabs(dp1), an1 = fabs(dn1),
1441     dp2 = pmin[2] + pmin[0], dn2 = pmin[2] - pmax[0], ap2 = fabs(dp2), an2 = fabs(dn2);
1442     if(ap1 > bias*an1 && ap2 > bias*an2)
1443         mask &= (3<<2)
1444             | (dp1 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0))
1445             | (dp2 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
1446     if(an1 > bias*ap1 && an2 > bias*ap2)
1447         mask &= (3<<2)
1448             | (dn1 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0))
1449             | (dn2 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
1450
1451     return mask;
1452 }
1453
1454 #define R_Shadow_CalcEntitySideMask(ent, worldtolight, radiustolight, bias) R_Shadow_CalcBBoxSideMask((ent)->mins, (ent)->maxs, worldtolight, radiustolight, bias)
1455
1456 int R_Shadow_CalcSphereSideMask(const vec3_t p, float radius, float bias)
1457 {
1458     // p is in the cubemap's local coordinate system
1459     // bias = border/(size - border)
1460     float dxyp = p[0] + p[1], dxyn = p[0] - p[1], axyp = fabs(dxyp), axyn = fabs(dxyn);
1461     float dyzp = p[1] + p[2], dyzn = p[1] - p[2], ayzp = fabs(dyzp), ayzn = fabs(dyzn);
1462     float dzxp = p[2] + p[0], dzxn = p[2] - p[0], azxp = fabs(dzxp), azxn = fabs(dzxn);
1463     int mask = 0x3F;
1464     if(axyp > bias*axyn + radius) mask &= dxyp < 0 ? ~((1<<0)|(1<<2)) : ~((2<<0)|(2<<2));
1465     if(axyn > bias*axyp + radius) mask &= dxyn < 0 ? ~((1<<0)|(2<<2)) : ~((2<<0)|(1<<2));
1466     if(ayzp > bias*ayzn + radius) mask &= dyzp < 0 ? ~((1<<2)|(1<<4)) : ~((2<<2)|(2<<4));
1467     if(ayzn > bias*ayzp + radius) mask &= dyzn < 0 ? ~((1<<2)|(2<<4)) : ~((2<<2)|(1<<4));
1468     if(azxp > bias*azxn + radius) mask &= dzxp < 0 ? ~((1<<4)|(1<<0)) : ~((2<<4)|(2<<0));
1469     if(azxn > bias*azxp + radius) mask &= dzxn < 0 ? ~((1<<4)|(2<<0)) : ~((2<<4)|(1<<0));
1470     return mask;
1471 }
1472
1473 int R_Shadow_CullFrustumSides(rtlight_t *rtlight, float size, float border)
1474 {
1475         int i;
1476         vec3_t p, n;
1477         int sides = 0x3F, masks[6] = { 3<<4, 3<<4, 3<<0, 3<<0, 3<<2, 3<<2 };
1478         float scale = (size - 2*border)/size, len;
1479         float bias = border / (float)(size - border), dp, dn, ap, an;
1480         // check if cone enclosing side would cross frustum plane
1481         scale = 2 / (scale*scale + 2);
1482         for (i = 0;i < 5;i++)
1483         {
1484                 if (PlaneDiff(rtlight->shadoworigin, &r_refdef.view.frustum[i]) > -0.03125)
1485                         continue;
1486                 Matrix4x4_Transform3x3(&rtlight->matrix_worldtolight, r_refdef.view.frustum[i].normal, n);
1487                 len = scale*VectorLength2(n);
1488                 if(n[0]*n[0] > len) sides &= n[0] < 0 ? ~(1<<0) : ~(2 << 0);
1489                 if(n[1]*n[1] > len) sides &= n[1] < 0 ? ~(1<<2) : ~(2 << 2);
1490                 if(n[2]*n[2] > len) sides &= n[2] < 0 ? ~(1<<4) : ~(2 << 4);
1491         }
1492         if (PlaneDiff(rtlight->shadoworigin, &r_refdef.view.frustum[4]) >= r_refdef.farclip - r_refdef.nearclip + 0.03125)
1493         {
1494         Matrix4x4_Transform3x3(&rtlight->matrix_worldtolight, r_refdef.view.frustum[4].normal, n);
1495         len = scale*VectorLength(n);
1496                 if(n[0]*n[0] > len) sides &= n[0] >= 0 ? ~(1<<0) : ~(2 << 0);
1497                 if(n[1]*n[1] > len) sides &= n[1] >= 0 ? ~(1<<2) : ~(2 << 2);
1498                 if(n[2]*n[2] > len) sides &= n[2] >= 0 ? ~(1<<4) : ~(2 << 4);
1499         }
1500         // this next test usually clips off more sides than the former, but occasionally clips fewer/different ones, so do both and combine results
1501         // check if frustum corners/origin cross plane sides
1502         for (i = 0;i < 5;i++)
1503         {
1504                 Matrix4x4_Transform(&rtlight->matrix_worldtolight, !i ? r_refdef.view.origin : r_refdef.view.frustumcorner[i-1], p);
1505                 dp = p[0] + p[1], dn = p[0] - p[1], ap = fabs(dp), an = fabs(dn),
1506                 masks[0] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
1507                 masks[1] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
1508                 dp = p[1] + p[2], dn = p[1] - p[2], ap = fabs(dp), an = fabs(dn),
1509                 masks[2] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
1510                 masks[3] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
1511                 dp = p[2] + p[0], dn = p[2] - p[0], ap = fabs(dp), an = fabs(dn),
1512                 masks[4] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
1513                 masks[5] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
1514         }
1515         return sides & masks[0] & masks[1] & masks[2] & masks[3] & masks[4] & masks[5];
1516 }
1517
1518 int R_Shadow_ChooseSidesFromBox(int firsttriangle, int numtris, const float *invertex3f, const int *elements, const matrix4x4_t *worldtolight, const vec3_t projectorigin, const vec3_t projectdirection, const vec3_t lightmins, const vec3_t lightmaxs, const vec3_t surfacemins, const vec3_t surfacemaxs, int *totals)
1519 {
1520         int t, tend;
1521         const int *e;
1522         const float *v[3];
1523         float normal[3];
1524         vec3_t p[3];
1525         float bias;
1526         int mask, surfacemask = 0;
1527         if (!BoxesOverlap(lightmins, lightmaxs, surfacemins, surfacemaxs))
1528                 return 0;
1529         bias = r_shadow_shadowmapborder / (float)(r_shadow_shadowmapmaxsize - r_shadow_shadowmapborder);
1530         tend = firsttriangle + numtris;
1531         if (BoxInsideBox(surfacemins, surfacemaxs, lightmins, lightmaxs))
1532         {
1533                 // surface box entirely inside light box, no box cull
1534                 if (projectdirection)
1535                 {
1536                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1537                         {
1538                                 v[0] = invertex3f + e[0] * 3, v[1] = invertex3f + e[1] * 3, v[2] = invertex3f + e[2] * 3;
1539                                 TriangleNormal(v[0], v[1], v[2], normal);
1540                                 if (r_shadow_frontsidecasting.integer == (DotProduct(normal, projectdirection) < 0))
1541                                 {
1542                                         Matrix4x4_Transform(worldtolight, v[0], p[0]), Matrix4x4_Transform(worldtolight, v[1], p[1]), Matrix4x4_Transform(worldtolight, v[2], p[2]);
1543                                         mask = R_Shadow_CalcTriangleSideMask(p[0], p[1], p[2], bias);
1544                                         surfacemask |= mask;
1545                                         if(totals)
1546                                         {
1547                                                 totals[0] += mask&1, totals[1] += (mask>>1)&1, totals[2] += (mask>>2)&1, totals[3] += (mask>>3)&1, totals[4] += (mask>>4)&1, totals[5] += mask>>5;
1548                                                 shadowsides[numshadowsides] = mask;
1549                                                 shadowsideslist[numshadowsides++] = t;
1550                                         }
1551                                 }
1552                         }
1553                 }
1554                 else
1555                 {
1556                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1557                         {
1558                                 v[0] = invertex3f + e[0] * 3, v[1] = invertex3f + e[1] * 3,     v[2] = invertex3f + e[2] * 3;
1559                                 if (r_shadow_frontsidecasting.integer == PointInfrontOfTriangle(projectorigin, v[0], v[1], v[2]))
1560                                 {
1561                                         Matrix4x4_Transform(worldtolight, v[0], p[0]), Matrix4x4_Transform(worldtolight, v[1], p[1]), Matrix4x4_Transform(worldtolight, v[2], p[2]);
1562                                         mask = R_Shadow_CalcTriangleSideMask(p[0], p[1], p[2], bias);
1563                                         surfacemask |= mask;
1564                                         if(totals)
1565                                         {
1566                                                 totals[0] += mask&1, totals[1] += (mask>>1)&1, totals[2] += (mask>>2)&1, totals[3] += (mask>>3)&1, totals[4] += (mask>>4)&1, totals[5] += mask>>5;
1567                                                 shadowsides[numshadowsides] = mask;
1568                                                 shadowsideslist[numshadowsides++] = t;
1569                                         }
1570                                 }
1571                         }
1572                 }
1573         }
1574         else
1575         {
1576                 // surface box not entirely inside light box, cull each triangle
1577                 if (projectdirection)
1578                 {
1579                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1580                         {
1581                                 v[0] = invertex3f + e[0] * 3, v[1] = invertex3f + e[1] * 3,     v[2] = invertex3f + e[2] * 3;
1582                                 TriangleNormal(v[0], v[1], v[2], normal);
1583                                 if (r_shadow_frontsidecasting.integer == (DotProduct(normal, projectdirection) < 0)
1584                                  && TriangleOverlapsBox(v[0], v[1], v[2], lightmins, lightmaxs))
1585                                 {
1586                                         Matrix4x4_Transform(worldtolight, v[0], p[0]), Matrix4x4_Transform(worldtolight, v[1], p[1]), Matrix4x4_Transform(worldtolight, v[2], p[2]);
1587                                         mask = R_Shadow_CalcTriangleSideMask(p[0], p[1], p[2], bias);
1588                                         surfacemask |= mask;
1589                                         if(totals)
1590                                         {
1591                                                 totals[0] += mask&1, totals[1] += (mask>>1)&1, totals[2] += (mask>>2)&1, totals[3] += (mask>>3)&1, totals[4] += (mask>>4)&1, totals[5] += mask>>5;
1592                                                 shadowsides[numshadowsides] = mask;
1593                                                 shadowsideslist[numshadowsides++] = t;
1594                                         }
1595                                 }
1596                         }
1597                 }
1598                 else
1599                 {
1600                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1601                         {
1602                                 v[0] = invertex3f + e[0] * 3, v[1] = invertex3f + e[1] * 3, v[2] = invertex3f + e[2] * 3;
1603                                 if (r_shadow_frontsidecasting.integer == PointInfrontOfTriangle(projectorigin, v[0], v[1], v[2])
1604                                  && TriangleOverlapsBox(v[0], v[1], v[2], lightmins, lightmaxs))
1605                                 {
1606                                         Matrix4x4_Transform(worldtolight, v[0], p[0]), Matrix4x4_Transform(worldtolight, v[1], p[1]), Matrix4x4_Transform(worldtolight, v[2], p[2]);
1607                                         mask = R_Shadow_CalcTriangleSideMask(p[0], p[1], p[2], bias);
1608                                         surfacemask |= mask;
1609                                         if(totals)
1610                                         {
1611                                                 totals[0] += mask&1, totals[1] += (mask>>1)&1, totals[2] += (mask>>2)&1, totals[3] += (mask>>3)&1, totals[4] += (mask>>4)&1, totals[5] += mask>>5;
1612                                                 shadowsides[numshadowsides] = mask;
1613                                                 shadowsideslist[numshadowsides++] = t;
1614                                         }
1615                                 }
1616                         }
1617                 }
1618         }
1619         return surfacemask;
1620 }
1621
1622 void R_Shadow_ShadowMapFromList(int numverts, int numtris, const float *vertex3f, const int *elements, int numsidetris, const int *sidetotals, const unsigned char *sides, const int *sidetris)
1623 {
1624         int i, j, outtriangles = 0;
1625         int *outelement3i[6];
1626         if (!numverts || !numsidetris || !r_shadow_compilingrtlight)
1627                 return;
1628         outtriangles = sidetotals[0] + sidetotals[1] + sidetotals[2] + sidetotals[3] + sidetotals[4] + sidetotals[5];
1629         // make sure shadowelements is big enough for this mesh
1630         if (maxshadowtriangles < outtriangles)
1631                 R_Shadow_ResizeShadowArrays(0, outtriangles, 0, 1);
1632
1633         // compute the offset and size of the separate index lists for each cubemap side
1634         outtriangles = 0;
1635         for (i = 0;i < 6;i++)
1636         {
1637                 outelement3i[i] = shadowelements + outtriangles * 3;
1638                 r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap->sideoffsets[i] = outtriangles;
1639                 r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap->sidetotals[i] = sidetotals[i];
1640                 outtriangles += sidetotals[i];
1641         }
1642
1643         // gather up the (sparse) triangles into separate index lists for each cubemap side
1644         for (i = 0;i < numsidetris;i++)
1645         {
1646                 const int *element = elements + sidetris[i] * 3;
1647                 for (j = 0;j < 6;j++)
1648                 {
1649                         if (sides[i] & (1 << j))
1650                         {
1651                                 outelement3i[j][0] = element[0];
1652                                 outelement3i[j][1] = element[1];
1653                                 outelement3i[j][2] = element[2];
1654                                 outelement3i[j] += 3;
1655                         }
1656                 }
1657         }
1658
1659         Mod_ShadowMesh_AddMesh(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap, NULL, NULL, NULL, vertex3f, NULL, NULL, NULL, NULL, outtriangles, shadowelements);
1660 }
1661
1662 static void R_Shadow_MakeTextures_MakeCorona(void)
1663 {
1664         float dx, dy;
1665         int x, y, a;
1666         unsigned char pixels[32][32][4];
1667         for (y = 0;y < 32;y++)
1668         {
1669                 dy = (y - 15.5f) * (1.0f / 16.0f);
1670                 for (x = 0;x < 32;x++)
1671                 {
1672                         dx = (x - 15.5f) * (1.0f / 16.0f);
1673                         a = (int)(((1.0f / (dx * dx + dy * dy + 0.2f)) - (1.0f / (1.0f + 0.2))) * 32.0f / (1.0f / (1.0f + 0.2)));
1674                         a = bound(0, a, 255);
1675                         pixels[y][x][0] = a;
1676                         pixels[y][x][1] = a;
1677                         pixels[y][x][2] = a;
1678                         pixels[y][x][3] = 255;
1679                 }
1680         }
1681         r_shadow_lightcorona = R_LoadTexture2D(r_shadow_texturepool, "lightcorona", 32, 32, &pixels[0][0][0], TEXTYPE_BGRA, TEXF_PRECACHE | TEXF_FORCELINEAR, NULL);
1682 }
1683
1684 static unsigned int R_Shadow_MakeTextures_SamplePoint(float x, float y, float z)
1685 {
1686         float dist = sqrt(x*x+y*y+z*z);
1687         float intensity = dist < 1 ? ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) : 0;
1688         // note this code could suffer byte order issues except that it is multiplying by an integer that reads the same both ways
1689         return (unsigned char)bound(0, intensity * 256.0f, 255) * 0x01010101;
1690 }
1691
1692 static void R_Shadow_MakeTextures(void)
1693 {
1694         int x, y, z;
1695         float intensity, dist;
1696         unsigned int *data;
1697         R_Shadow_FreeShadowMaps();
1698         R_FreeTexturePool(&r_shadow_texturepool);
1699         r_shadow_texturepool = R_AllocTexturePool();
1700         r_shadow_attenlinearscale = r_shadow_lightattenuationlinearscale.value;
1701         r_shadow_attendividebias = r_shadow_lightattenuationdividebias.value;
1702         data = (unsigned int *)Mem_Alloc(tempmempool, max(max(ATTEN3DSIZE*ATTEN3DSIZE*ATTEN3DSIZE, ATTEN2DSIZE*ATTEN2DSIZE), ATTEN1DSIZE) * 4);
1703         // the table includes one additional value to avoid the need to clamp indexing due to minor math errors
1704         for (x = 0;x <= ATTENTABLESIZE;x++)
1705         {
1706                 dist = (x + 0.5f) * (1.0f / ATTENTABLESIZE) * (1.0f / 0.9375);
1707                 intensity = dist < 1 ? ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) : 0;
1708                 r_shadow_attentable[x] = bound(0, intensity, 1);
1709         }
1710         // 1D gradient texture
1711         for (x = 0;x < ATTEN1DSIZE;x++)
1712                 data[x] = R_Shadow_MakeTextures_SamplePoint((x + 0.5f) * (1.0f / ATTEN1DSIZE) * (1.0f / 0.9375), 0, 0);
1713         r_shadow_attenuationgradienttexture = R_LoadTexture2D(r_shadow_texturepool, "attenuation1d", ATTEN1DSIZE, 1, (unsigned char *)data, TEXTYPE_BGRA, TEXF_PRECACHE | TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCELINEAR, NULL);
1714         // 2D circle texture
1715         for (y = 0;y < ATTEN2DSIZE;y++)
1716                 for (x = 0;x < ATTEN2DSIZE;x++)
1717                         data[y*ATTEN2DSIZE+x] = R_Shadow_MakeTextures_SamplePoint(((x + 0.5f) * (2.0f / ATTEN2DSIZE) - 1.0f) * (1.0f / 0.9375), ((y + 0.5f) * (2.0f / ATTEN2DSIZE) - 1.0f) * (1.0f / 0.9375), 0);
1718         r_shadow_attenuation2dtexture = R_LoadTexture2D(r_shadow_texturepool, "attenuation2d", ATTEN2DSIZE, ATTEN2DSIZE, (unsigned char *)data, TEXTYPE_BGRA, TEXF_PRECACHE | TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCELINEAR, NULL);
1719         // 3D sphere texture
1720         if (r_shadow_texture3d.integer && gl_texture3d)
1721         {
1722                 for (z = 0;z < ATTEN3DSIZE;z++)
1723                         for (y = 0;y < ATTEN3DSIZE;y++)
1724                                 for (x = 0;x < ATTEN3DSIZE;x++)
1725                                         data[(z*ATTEN3DSIZE+y)*ATTEN3DSIZE+x] = R_Shadow_MakeTextures_SamplePoint(((x + 0.5f) * (2.0f / ATTEN3DSIZE) - 1.0f) * (1.0f / 0.9375), ((y + 0.5f) * (2.0f / ATTEN3DSIZE) - 1.0f) * (1.0f / 0.9375), ((z + 0.5f) * (2.0f / ATTEN3DSIZE) - 1.0f) * (1.0f / 0.9375));
1726                 r_shadow_attenuation3dtexture = R_LoadTexture3D(r_shadow_texturepool, "attenuation3d", ATTEN3DSIZE, ATTEN3DSIZE, ATTEN3DSIZE, (unsigned char *)data, TEXTYPE_BGRA, TEXF_PRECACHE | TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCELINEAR, NULL);
1727         }
1728         else
1729                 r_shadow_attenuation3dtexture = NULL;
1730         Mem_Free(data);
1731
1732         R_Shadow_MakeTextures_MakeCorona();
1733
1734         // Editor light sprites
1735         r_editlights_sprcursor = Draw_CachePic ("gfx/editlights/cursor");
1736         r_editlights_sprlight = Draw_CachePic ("gfx/editlights/light");
1737         r_editlights_sprnoshadowlight = Draw_CachePic ("gfx/editlights/noshadow");
1738         r_editlights_sprcubemaplight = Draw_CachePic ("gfx/editlights/cubemaplight");
1739         r_editlights_sprcubemapnoshadowlight = Draw_CachePic ("gfx/editlights/cubemapnoshadowlight");
1740         r_editlights_sprselection = Draw_CachePic ("gfx/editlights/selection");
1741 }
1742
1743 void R_Shadow_ValidateCvars(void)
1744 {
1745         if (r_shadow_texture3d.integer && !gl_texture3d)
1746                 Cvar_SetValueQuick(&r_shadow_texture3d, 0);
1747         if (gl_ext_separatestencil.integer && !gl_support_separatestencil)
1748                 Cvar_SetValueQuick(&gl_ext_separatestencil, 0);
1749         if (gl_ext_stenciltwoside.integer && !gl_support_stenciltwoside)
1750                 Cvar_SetValueQuick(&gl_ext_stenciltwoside, 0);
1751 }
1752
1753 void R_Shadow_RenderMode_Begin(void)
1754 {
1755 #if 0
1756         GLint drawbuffer;
1757         GLint readbuffer;
1758 #endif
1759         R_Shadow_ValidateCvars();
1760
1761         if (!r_shadow_attenuation2dtexture
1762          || (!r_shadow_attenuation3dtexture && r_shadow_texture3d.integer)
1763          || r_shadow_lightattenuationdividebias.value != r_shadow_attendividebias
1764          || r_shadow_lightattenuationlinearscale.value != r_shadow_attenlinearscale)
1765                 R_Shadow_MakeTextures();
1766
1767         CHECKGLERROR
1768         R_Mesh_ColorPointer(NULL, 0, 0);
1769         R_Mesh_ResetTextureState();
1770         GL_BlendFunc(GL_ONE, GL_ZERO);
1771         GL_DepthRange(0, 1);
1772         GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);
1773         GL_DepthTest(true);
1774         GL_DepthMask(false);
1775         GL_Color(0, 0, 0, 1);
1776         GL_Scissor(r_refdef.view.viewport.x, r_refdef.view.viewport.y, r_refdef.view.viewport.width, r_refdef.view.viewport.height);
1777
1778         r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
1779
1780         if (gl_ext_separatestencil.integer)
1781         {
1782                 r_shadow_shadowingrendermode_zpass = R_SHADOW_RENDERMODE_ZPASS_SEPARATESTENCIL;
1783                 r_shadow_shadowingrendermode_zfail = R_SHADOW_RENDERMODE_ZFAIL_SEPARATESTENCIL;
1784         }
1785         else if (gl_ext_stenciltwoside.integer)
1786         {
1787                 r_shadow_shadowingrendermode_zpass = R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE;
1788                 r_shadow_shadowingrendermode_zfail = R_SHADOW_RENDERMODE_ZFAIL_STENCILTWOSIDE;
1789         }
1790         else
1791         {
1792                 r_shadow_shadowingrendermode_zpass = R_SHADOW_RENDERMODE_ZPASS_STENCIL;
1793                 r_shadow_shadowingrendermode_zfail = R_SHADOW_RENDERMODE_ZFAIL_STENCIL;
1794         }
1795
1796         if (r_glsl.integer && gl_support_fragment_shader)
1797                 r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_GLSL;
1798         else if (gl_dot3arb && gl_texturecubemap && r_shadow_dot3.integer && gl_stencil)
1799                 r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_DOT3;
1800         else
1801                 r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_VERTEX;
1802
1803         CHECKGLERROR
1804 #if 0
1805         qglGetIntegerv(GL_DRAW_BUFFER, &drawbuffer);CHECKGLERROR
1806         qglGetIntegerv(GL_READ_BUFFER, &readbuffer);CHECKGLERROR
1807         r_shadow_drawbuffer = drawbuffer;
1808         r_shadow_readbuffer = readbuffer;
1809 #endif
1810         r_shadow_cullface_front = r_refdef.view.cullface_front;
1811         r_shadow_cullface_back = r_refdef.view.cullface_back;
1812 }
1813
1814 void R_Shadow_RenderMode_ActiveLight(const rtlight_t *rtlight)
1815 {
1816         rsurface.rtlight = rtlight;
1817 }
1818
1819 void R_Shadow_RenderMode_Reset(void)
1820 {
1821         CHECKGLERROR
1822         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE || r_shadow_rendermode == R_SHADOW_RENDERMODE_ZFAIL_STENCILTWOSIDE)
1823         {
1824                 qglDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);CHECKGLERROR
1825         }
1826         if (gl_support_ext_framebuffer_object)
1827         {
1828                 qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);CHECKGLERROR
1829         }
1830 #if 0
1831         qglDrawBuffer(r_shadow_drawbuffer);CHECKGLERROR
1832         qglReadBuffer(r_shadow_readbuffer);CHECKGLERROR
1833 #endif
1834         R_SetViewport(&r_refdef.view.viewport);
1835         GL_Scissor(r_shadow_lightscissor[0], r_shadow_lightscissor[1], r_shadow_lightscissor[2], r_shadow_lightscissor[3]);
1836         R_Mesh_ColorPointer(NULL, 0, 0);
1837         R_Mesh_ResetTextureState();
1838         GL_DepthRange(0, 1);
1839         GL_DepthTest(true);
1840         GL_DepthMask(false);
1841         qglDepthFunc(GL_LEQUAL);CHECKGLERROR
1842         GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);CHECKGLERROR
1843         qglDisable(GL_STENCIL_TEST);CHECKGLERROR
1844         qglStencilMask(~0);CHECKGLERROR
1845         qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);CHECKGLERROR
1846         qglStencilFunc(GL_ALWAYS, 128, ~0);CHECKGLERROR
1847         r_refdef.view.cullface_front = r_shadow_cullface_front;
1848         r_refdef.view.cullface_back = r_shadow_cullface_back;
1849         GL_CullFace(r_refdef.view.cullface_back);
1850         GL_Color(1, 1, 1, 1);
1851         GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
1852         GL_BlendFunc(GL_ONE, GL_ZERO);
1853         R_SetupGenericShader(false);
1854         r_shadow_usingshadowmaprect = false;
1855         r_shadow_usingshadowmapcube = false;
1856         r_shadow_usingshadowmap2d = false;
1857         CHECKGLERROR
1858 }
1859
1860 void R_Shadow_ClearStencil(void)
1861 {
1862         CHECKGLERROR
1863         GL_Clear(GL_STENCIL_BUFFER_BIT);
1864         r_refdef.stats.lights_clears++;
1865 }
1866
1867 void R_Shadow_RenderMode_StencilShadowVolumes(qboolean zpass)
1868 {
1869         r_shadow_rendermode_t mode = zpass ? r_shadow_shadowingrendermode_zpass : r_shadow_shadowingrendermode_zfail;
1870         if (r_shadow_rendermode == mode)
1871                 return;
1872         CHECKGLERROR
1873         R_Shadow_RenderMode_Reset();
1874         GL_ColorMask(0, 0, 0, 0);
1875         GL_PolygonOffset(r_refdef.shadowpolygonfactor, r_refdef.shadowpolygonoffset);CHECKGLERROR
1876         R_SetupDepthOrShadowShader();
1877         qglDepthFunc(GL_LESS);CHECKGLERROR
1878         qglEnable(GL_STENCIL_TEST);CHECKGLERROR
1879         r_shadow_rendermode = mode;
1880         switch(mode)
1881         {
1882         default:
1883                 break;
1884         case R_SHADOW_RENDERMODE_ZPASS_SEPARATESTENCIL:
1885                 GL_CullFace(GL_NONE);
1886                 qglStencilOpSeparate(r_refdef.view.cullface_front, GL_KEEP, GL_KEEP, GL_INCR);CHECKGLERROR
1887                 qglStencilOpSeparate(r_refdef.view.cullface_back, GL_KEEP, GL_KEEP, GL_DECR);CHECKGLERROR
1888                 break;
1889         case R_SHADOW_RENDERMODE_ZFAIL_SEPARATESTENCIL:
1890                 GL_CullFace(GL_NONE);
1891                 qglStencilOpSeparate(r_refdef.view.cullface_front, GL_KEEP, GL_INCR, GL_KEEP);CHECKGLERROR
1892                 qglStencilOpSeparate(r_refdef.view.cullface_back, GL_KEEP, GL_DECR, GL_KEEP);CHECKGLERROR
1893                 break;
1894         case R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE:
1895                 GL_CullFace(GL_NONE);
1896                 qglEnable(GL_STENCIL_TEST_TWO_SIDE_EXT);CHECKGLERROR
1897                 qglActiveStencilFaceEXT(r_refdef.view.cullface_front);CHECKGLERROR
1898                 qglStencilMask(~0);CHECKGLERROR
1899                 qglStencilOp(GL_KEEP, GL_KEEP, GL_INCR);CHECKGLERROR
1900                 qglActiveStencilFaceEXT(r_refdef.view.cullface_back);CHECKGLERROR
1901                 qglStencilMask(~0);CHECKGLERROR
1902                 qglStencilOp(GL_KEEP, GL_KEEP, GL_DECR);CHECKGLERROR
1903                 break;
1904         case R_SHADOW_RENDERMODE_ZFAIL_STENCILTWOSIDE:
1905                 GL_CullFace(GL_NONE);
1906                 qglEnable(GL_STENCIL_TEST_TWO_SIDE_EXT);CHECKGLERROR
1907                 qglActiveStencilFaceEXT(r_refdef.view.cullface_front);CHECKGLERROR
1908                 qglStencilMask(~0);CHECKGLERROR
1909                 qglStencilOp(GL_KEEP, GL_INCR, GL_KEEP);CHECKGLERROR
1910                 qglActiveStencilFaceEXT(r_refdef.view.cullface_back);CHECKGLERROR
1911                 qglStencilMask(~0);CHECKGLERROR
1912                 qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);CHECKGLERROR
1913                 break;
1914         }
1915 }
1916
1917 static void R_Shadow_MakeVSDCT(void)
1918 {
1919         // maps to a 2x3 texture rectangle with normalized coordinates
1920         // +-
1921         // XX
1922         // YY
1923         // ZZ
1924         // stores abs(dir.xy), offset.xy/2.5
1925         unsigned char data[4*6] =
1926         {
1927                 255, 0, 0x33, 0x33, // +X: <1, 0>, <0.5, 0.5>
1928                 255, 0, 0x99, 0x33, // -X: <1, 0>, <1.5, 0.5>
1929                 0, 255, 0x33, 0x99, // +Y: <0, 1>, <0.5, 1.5>
1930                 0, 255, 0x99, 0x99, // -Y: <0, 1>, <1.5, 1.5>
1931                 0,   0, 0x33, 0xFF, // +Z: <0, 0>, <0.5, 2.5>
1932                 0,   0, 0x99, 0xFF, // -Z: <0, 0>, <1.5, 2.5>
1933         };
1934         r_shadow_shadowmapvsdcttexture = R_LoadTextureCubeMap(r_shadow_texturepool, "shadowmapvsdct", 1, data, TEXTYPE_RGBA, TEXF_ALWAYSPRECACHE | TEXF_FORCENEAREST | TEXF_CLAMP | TEXF_ALPHA, NULL);
1935 }
1936
1937 void R_Shadow_RenderMode_ShadowMap(int side, qboolean clear, int size)
1938 {
1939         int status;
1940         int maxsize;
1941         float nearclip, farclip, bias;
1942         r_viewport_t viewport;
1943         GLuint fbo = 0;
1944         CHECKGLERROR
1945         maxsize = r_shadow_shadowmapmaxsize;
1946         nearclip = r_shadow_shadowmapping_nearclip.value / rsurface.rtlight->radius;
1947         farclip = 1.0f;
1948         bias = r_shadow_shadowmapping_bias.value * nearclip * (1024.0f / size);// * rsurface.rtlight->radius;
1949         r_shadow_shadowmap_parameters[2] = 0.5f + 0.5f * (farclip + nearclip) / (farclip - nearclip);
1950         r_shadow_shadowmap_parameters[3] = -nearclip * farclip / (farclip - nearclip) - 0.5f * bias;
1951         r_shadow_shadowmapside = side;
1952         r_shadow_shadowmapsize = size;
1953         if (r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAP2D)
1954         {
1955                 r_shadow_shadowmap_parameters[0] = 0.5f * (size - r_shadow_shadowmapborder);
1956                 r_shadow_shadowmap_parameters[1] = r_shadow_shadowmapvsdct ? 2.5f*size : size;
1957                 R_Viewport_InitRectSideView(&viewport, &rsurface.rtlight->matrix_lighttoworld, side, size, r_shadow_shadowmapborder, nearclip, farclip, NULL);
1958                 if (r_shadow_rendermode == R_SHADOW_RENDERMODE_SHADOWMAP2D) goto init_done;
1959
1960                 // complex unrolled cube approach (more flexible)
1961                 if (r_shadow_shadowmapvsdct && !r_shadow_shadowmapvsdcttexture)
1962                         R_Shadow_MakeVSDCT();
1963                 if (!r_shadow_shadowmap2dtexture)
1964                 {
1965 #if 1
1966                         int w = maxsize*2, h = gl_support_arb_texture_non_power_of_two ? maxsize*3 : maxsize*4;
1967                         r_shadow_shadowmap2dtexture = R_LoadTextureShadowMap2D(r_shadow_texturepool, "shadowmap", w, h, r_shadow_shadowmapdepthbits, r_shadow_shadowmapsampler);
1968                         qglGenFramebuffersEXT(1, &r_shadow_fbo2d);CHECKGLERROR
1969                         qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, r_shadow_fbo2d);CHECKGLERROR
1970                         qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, R_GetTexture(r_shadow_shadowmap2dtexture), 0);CHECKGLERROR
1971             // render depth into the fbo, do not render color at all
1972                         qglDrawBuffer(GL_NONE);CHECKGLERROR
1973                         qglReadBuffer(GL_NONE);CHECKGLERROR
1974                         status = qglCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);CHECKGLERROR
1975                         if (status != GL_FRAMEBUFFER_COMPLETE_EXT && r_shadow_shadowmapping.integer)
1976                         {
1977                                 Con_Printf("R_Shadow_RenderMode_ShadowMap: glCheckFramebufferStatusEXT returned %i\n", status);
1978                                 Cvar_SetValueQuick(&r_shadow_shadowmapping, 0);
1979                         }
1980 #endif
1981                 }
1982                 CHECKGLERROR
1983                 if (r_shadow_shadowmap2dtexture) fbo = r_shadow_fbo2d;
1984                 r_shadow_shadowmap_texturescale[0] = 1.0f / R_TextureWidth(r_shadow_shadowmap2dtexture);
1985                 r_shadow_shadowmap_texturescale[1] = 1.0f / R_TextureHeight(r_shadow_shadowmap2dtexture);
1986                 r_shadow_rendermode = R_SHADOW_RENDERMODE_SHADOWMAP2D;
1987         }
1988         else if (r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAPRECTANGLE)
1989         {
1990                 r_shadow_shadowmap_parameters[0] = 0.5f * (size - r_shadow_shadowmapborder);
1991                 r_shadow_shadowmap_parameters[1] = r_shadow_shadowmapvsdct ? 2.5f*size : size;
1992                 R_Viewport_InitRectSideView(&viewport, &rsurface.rtlight->matrix_lighttoworld, side, size, r_shadow_shadowmapborder, nearclip, farclip, NULL);
1993                 if (r_shadow_rendermode == R_SHADOW_RENDERMODE_SHADOWMAPRECTANGLE) goto init_done;
1994
1995                 // complex unrolled cube approach (more flexible)
1996                 if (r_shadow_shadowmapvsdct && !r_shadow_shadowmapvsdcttexture)
1997                         R_Shadow_MakeVSDCT();
1998                 if (!r_shadow_shadowmaprectangletexture)
1999                 {
2000 #if 1
2001                         r_shadow_shadowmaprectangletexture = R_LoadTextureShadowMapRectangle(r_shadow_texturepool, "shadowmap", maxsize*2, maxsize*3, r_shadow_shadowmapdepthbits, r_shadow_shadowmapsampler);
2002                         qglGenFramebuffersEXT(1, &r_shadow_fborectangle);CHECKGLERROR
2003                         qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, r_shadow_fborectangle);CHECKGLERROR
2004                         qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_RECTANGLE_ARB, R_GetTexture(r_shadow_shadowmaprectangletexture), 0);CHECKGLERROR
2005                         // render depth into the fbo, do not render color at all
2006                         qglDrawBuffer(GL_NONE);CHECKGLERROR
2007                         qglReadBuffer(GL_NONE);CHECKGLERROR
2008                         status = qglCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);CHECKGLERROR
2009                         if (status != GL_FRAMEBUFFER_COMPLETE_EXT && r_shadow_shadowmapping.integer)
2010                         {
2011                                 Con_Printf("R_Shadow_RenderMode_ShadowMap: glCheckFramebufferStatusEXT returned %i\n", status);
2012                                 Cvar_SetValueQuick(&r_shadow_shadowmapping, 0);
2013                         }
2014 #endif
2015                 }
2016                 CHECKGLERROR
2017                 if(r_shadow_shadowmaprectangletexture) fbo = r_shadow_fborectangle;
2018                 r_shadow_shadowmap_texturescale[0] = 1.0f;
2019                 r_shadow_shadowmap_texturescale[1] = 1.0f;
2020                 r_shadow_rendermode = R_SHADOW_RENDERMODE_SHADOWMAPRECTANGLE;
2021         }
2022         else if (r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAPCUBESIDE)
2023         {
2024                 r_shadow_shadowmap_parameters[0] = 1.0f;
2025                 r_shadow_shadowmap_parameters[1] = 1.0f;
2026                 R_Viewport_InitCubeSideView(&viewport, &rsurface.rtlight->matrix_lighttoworld, side, size, nearclip, farclip, NULL);
2027                 if (r_shadow_rendermode == R_SHADOW_RENDERMODE_SHADOWMAPCUBESIDE) goto init_done;
2028
2029                 // simple cube approach
2030                 if (!r_shadow_shadowmapcubetexture[r_shadow_shadowmaplod])
2031                 {
2032  #if 1
2033                         r_shadow_shadowmapcubetexture[r_shadow_shadowmaplod] = R_LoadTextureShadowMapCube(r_shadow_texturepool, "shadowmapcube", size, r_shadow_shadowmapdepthbits, r_shadow_shadowmapsampler);
2034                         qglGenFramebuffersEXT(1, &r_shadow_fbocubeside[r_shadow_shadowmaplod]);CHECKGLERROR
2035                         qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, r_shadow_fbocubeside[r_shadow_shadowmaplod]);CHECKGLERROR
2036                         qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + side, R_GetTexture(r_shadow_shadowmapcubetexture[r_shadow_shadowmaplod]), 0);CHECKGLERROR
2037                         // render depth into the fbo, do not render color at all
2038                         qglDrawBuffer(GL_NONE);CHECKGLERROR
2039                         qglReadBuffer(GL_NONE);CHECKGLERROR
2040                         status = qglCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);CHECKGLERROR
2041                         if (status != GL_FRAMEBUFFER_COMPLETE_EXT && r_shadow_shadowmapping.integer)
2042                         {
2043                                 Con_Printf("R_Shadow_RenderMode_ShadowMap: glCheckFramebufferStatusEXT returned %i\n", status);
2044                                 Cvar_SetValueQuick(&r_shadow_shadowmapping, 0);
2045                         }
2046  #endif
2047                 }
2048                 CHECKGLERROR
2049                 if (r_shadow_shadowmapcubetexture[r_shadow_shadowmaplod]) fbo = r_shadow_fbocubeside[r_shadow_shadowmaplod];
2050                 r_shadow_shadowmap_texturescale[0] = 0.0f;
2051                 r_shadow_shadowmap_texturescale[1] = 0.0f;
2052                 r_shadow_rendermode = R_SHADOW_RENDERMODE_SHADOWMAPCUBESIDE;
2053         }
2054
2055         R_Shadow_RenderMode_Reset();
2056         if (fbo)
2057         {
2058                 qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);CHECKGLERROR
2059                 R_SetupDepthOrShadowShader();
2060         }
2061         else
2062         {
2063                 R_SetupShowDepthShader();
2064                 qglClearColor(1,1,1,1);CHECKGLERROR
2065         }
2066         CHECKGLERROR
2067         GL_PolygonOffset(r_shadow_shadowmapping_polygonfactor.value, r_shadow_shadowmapping_polygonoffset.value);
2068         GL_DepthMask(true);
2069         GL_DepthTest(true);
2070         qglClearDepth(1);
2071         CHECKGLERROR
2072
2073 init_done:
2074         R_SetViewport(&viewport);
2075         GL_Scissor(viewport.x, viewport.y, viewport.width, viewport.height);
2076         if(r_shadow_rendermode == R_SHADOW_RENDERMODE_SHADOWMAP2D || r_shadow_rendermode == R_SHADOW_RENDERMODE_SHADOWMAPRECTANGLE)
2077         {
2078                 int flipped = (side&1)^(side>>2);
2079                 r_refdef.view.cullface_front = flipped ? r_shadow_cullface_back : r_shadow_cullface_front;
2080                 r_refdef.view.cullface_back = flipped ? r_shadow_cullface_front : r_shadow_cullface_back;
2081                 GL_CullFace(r_refdef.view.cullface_back);
2082         }
2083         else if(r_shadow_rendermode == R_SHADOW_RENDERMODE_SHADOWMAPCUBESIDE)
2084         {
2085                 qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + side, R_GetTexture(r_shadow_shadowmapcubetexture[r_shadow_shadowmaplod]), 0);CHECKGLERROR
2086         }
2087         if (clear)
2088                 qglClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT |  GL_STENCIL_BUFFER_BIT);
2089         CHECKGLERROR
2090 }
2091
2092 void R_Shadow_RenderMode_Lighting(qboolean stenciltest, qboolean transparent, qboolean shadowmapping)
2093 {
2094         if (transparent)
2095         {
2096                 r_shadow_lightscissor[0] = r_refdef.view.viewport.x;
2097                 r_shadow_lightscissor[1] = r_refdef.view.viewport.y;
2098                 r_shadow_lightscissor[2] = r_refdef.view.viewport.width;
2099                 r_shadow_lightscissor[3] = r_refdef.view.viewport.height;
2100         }
2101         CHECKGLERROR
2102         R_Shadow_RenderMode_Reset();
2103         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2104         if (!transparent)
2105         {
2106                 qglDepthFunc(GL_EQUAL);CHECKGLERROR
2107         }
2108         if (stenciltest)
2109         {
2110                 qglEnable(GL_STENCIL_TEST);CHECKGLERROR
2111                 // only draw light where this geometry was already rendered AND the
2112                 // stencil is 128 (values other than this mean shadow)
2113                 qglStencilFunc(GL_EQUAL, 128, ~0);CHECKGLERROR
2114         }
2115         r_shadow_rendermode = r_shadow_lightingrendermode;
2116         // do global setup needed for the chosen lighting mode
2117         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_LIGHT_GLSL)
2118         {
2119                 R_Mesh_TexBindCubeMap(GL20TU_CUBE, R_GetTexture(rsurface.rtlight->currentcubemap)); // light filter
2120                 GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 0);
2121                 CHECKGLERROR
2122                 if (shadowmapping)
2123                 {
2124                         if (r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAP2D)
2125                         {
2126                                 r_shadow_usingshadowmap2d = true;
2127                                 R_Mesh_TexBind(GL20TU_SHADOWMAP2D, R_GetTexture(r_shadow_shadowmap2dtexture));
2128                                 CHECKGLERROR
2129                         }
2130                         else if (r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAPRECTANGLE)
2131                         {
2132                                 r_shadow_usingshadowmaprect = true;
2133                                 R_Mesh_TexBindRectangle(GL20TU_SHADOWMAPRECT, R_GetTexture(r_shadow_shadowmaprectangletexture));
2134                                 CHECKGLERROR
2135                         }
2136                         else if (r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAPCUBESIDE)
2137                         {
2138                                 r_shadow_usingshadowmapcube = true;
2139                                 R_Mesh_TexBindCubeMap(GL20TU_SHADOWMAPCUBE, R_GetTexture(r_shadow_shadowmapcubetexture[r_shadow_shadowmaplod]));
2140                                 CHECKGLERROR
2141                         }
2142
2143                         if (r_shadow_shadowmapvsdct && (r_shadow_usingshadowmap2d || r_shadow_usingshadowmaprect))
2144                         {
2145                                 R_Mesh_TexBindCubeMap(GL20TU_CUBEPROJECTION, R_GetTexture(r_shadow_shadowmapvsdcttexture));
2146                                 CHECKGLERROR
2147                         }
2148                 }
2149         }
2150         else if (r_shadow_rendermode == R_SHADOW_RENDERMODE_LIGHT_VERTEX)
2151                 R_Mesh_ColorPointer(rsurface.array_color4f, 0, 0);
2152         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2153         CHECKGLERROR
2154 }
2155
2156 void R_Shadow_RenderMode_VisibleShadowVolumes(void)
2157 {
2158         CHECKGLERROR
2159         R_Shadow_RenderMode_Reset();
2160         GL_BlendFunc(GL_ONE, GL_ONE);
2161         GL_DepthRange(0, 1);
2162         GL_DepthTest(r_showshadowvolumes.integer < 2);
2163         GL_Color(0.0, 0.0125 * r_refdef.view.colorscale, 0.1 * r_refdef.view.colorscale, 1);
2164         GL_PolygonOffset(r_refdef.shadowpolygonfactor, r_refdef.shadowpolygonoffset);CHECKGLERROR
2165         GL_CullFace(GL_NONE);
2166         r_shadow_rendermode = R_SHADOW_RENDERMODE_VISIBLEVOLUMES;
2167 }
2168
2169 void R_Shadow_RenderMode_VisibleLighting(qboolean stenciltest, qboolean transparent)
2170 {
2171         CHECKGLERROR
2172         R_Shadow_RenderMode_Reset();
2173         GL_BlendFunc(GL_ONE, GL_ONE);
2174         GL_DepthRange(0, 1);
2175         GL_DepthTest(r_showlighting.integer < 2);
2176         GL_Color(0.1 * r_refdef.view.colorscale, 0.0125 * r_refdef.view.colorscale, 0, 1);
2177         if (!transparent)
2178         {
2179                 qglDepthFunc(GL_EQUAL);CHECKGLERROR
2180         }
2181         if (stenciltest)
2182         {
2183                 qglEnable(GL_STENCIL_TEST);CHECKGLERROR
2184                 qglStencilFunc(GL_EQUAL, 128, ~0);CHECKGLERROR
2185         }
2186         r_shadow_rendermode = R_SHADOW_RENDERMODE_VISIBLELIGHTING;
2187 }
2188
2189 void R_Shadow_RenderMode_End(void)
2190 {
2191         CHECKGLERROR
2192         R_Shadow_RenderMode_Reset();
2193         R_Shadow_RenderMode_ActiveLight(NULL);
2194         GL_DepthMask(true);
2195         GL_Scissor(r_refdef.view.viewport.x, r_refdef.view.viewport.y, r_refdef.view.viewport.width, r_refdef.view.viewport.height);
2196         r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
2197 }
2198
2199 int bboxedges[12][2] =
2200 {
2201         // top
2202         {0, 1}, // +X
2203         {0, 2}, // +Y
2204         {1, 3}, // Y, +X
2205         {2, 3}, // X, +Y
2206         // bottom
2207         {4, 5}, // +X
2208         {4, 6}, // +Y
2209         {5, 7}, // Y, +X
2210         {6, 7}, // X, +Y
2211         // verticals
2212         {0, 4}, // +Z
2213         {1, 5}, // X, +Z
2214         {2, 6}, // Y, +Z
2215         {3, 7}, // XY, +Z
2216 };
2217
2218 qboolean R_Shadow_ScissorForBBox(const float *mins, const float *maxs)
2219 {
2220         int i, ix1, iy1, ix2, iy2;
2221         float x1, y1, x2, y2;
2222         vec4_t v, v2;
2223         float vertex[20][3];
2224         int j, k;
2225         vec4_t plane4f;
2226         int numvertices;
2227         float corner[8][4];
2228         float dist[8];
2229         int sign[8];
2230         float f;
2231
2232         r_shadow_lightscissor[0] = r_refdef.view.viewport.x;
2233         r_shadow_lightscissor[1] = r_refdef.view.viewport.y;
2234         r_shadow_lightscissor[2] = r_refdef.view.viewport.width;
2235         r_shadow_lightscissor[3] = r_refdef.view.viewport.height;
2236
2237         if (!r_shadow_scissor.integer)
2238                 return false;
2239
2240         // if view is inside the light box, just say yes it's visible
2241         if (BoxesOverlap(r_refdef.view.origin, r_refdef.view.origin, mins, maxs))
2242                 return false;
2243
2244         x1 = y1 = x2 = y2 = 0;
2245
2246         // transform all corners that are infront of the nearclip plane
2247         VectorNegate(r_refdef.view.frustum[4].normal, plane4f);
2248         plane4f[3] = r_refdef.view.frustum[4].dist;
2249         numvertices = 0;
2250         for (i = 0;i < 8;i++)
2251         {
2252                 Vector4Set(corner[i], (i & 1) ? maxs[0] : mins[0], (i & 2) ? maxs[1] : mins[1], (i & 4) ? maxs[2] : mins[2], 1);
2253                 dist[i] = DotProduct4(corner[i], plane4f);
2254                 sign[i] = dist[i] > 0;
2255                 if (!sign[i])
2256                 {
2257                         VectorCopy(corner[i], vertex[numvertices]);
2258                         numvertices++;
2259                 }
2260         }
2261         // if some points are behind the nearclip, add clipped edge points to make
2262         // sure that the scissor boundary is complete
2263         if (numvertices > 0 && numvertices < 8)
2264         {
2265                 // add clipped edge points
2266                 for (i = 0;i < 12;i++)
2267                 {
2268                         j = bboxedges[i][0];
2269                         k = bboxedges[i][1];
2270                         if (sign[j] != sign[k])
2271                         {
2272                                 f = dist[j] / (dist[j] - dist[k]);
2273                                 VectorLerp(corner[j], f, corner[k], vertex[numvertices]);
2274                                 numvertices++;
2275                         }
2276                 }
2277         }
2278
2279         // if we have no points to check, the light is behind the view plane
2280         if (!numvertices)
2281                 return true;
2282
2283         // if we have some points to transform, check what screen area is covered
2284         x1 = y1 = x2 = y2 = 0;
2285         v[3] = 1.0f;
2286         //Con_Printf("%i vertices to transform...\n", numvertices);
2287         for (i = 0;i < numvertices;i++)
2288         {
2289                 VectorCopy(vertex[i], v);
2290                 R_Viewport_TransformToScreen(&r_refdef.view.viewport, v, v2);
2291                 //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]);
2292                 if (i)
2293                 {
2294                         if (x1 > v2[0]) x1 = v2[0];
2295                         if (x2 < v2[0]) x2 = v2[0];
2296                         if (y1 > v2[1]) y1 = v2[1];
2297                         if (y2 < v2[1]) y2 = v2[1];
2298                 }
2299                 else
2300                 {
2301                         x1 = x2 = v2[0];
2302                         y1 = y2 = v2[1];
2303                 }
2304         }
2305
2306         // now convert the scissor rectangle to integer screen coordinates
2307         ix1 = (int)(x1 - 1.0f);
2308         iy1 = vid.height - (int)(y2 - 1.0f);
2309         ix2 = (int)(x2 + 1.0f);
2310         iy2 = vid.height - (int)(y1 + 1.0f);
2311         //Con_Printf("%f %f %f %f\n", x1, y1, x2, y2);
2312
2313         // clamp it to the screen
2314         if (ix1 < r_refdef.view.viewport.x) ix1 = r_refdef.view.viewport.x;
2315         if (iy1 < r_refdef.view.viewport.y) iy1 = r_refdef.view.viewport.y;
2316         if (ix2 > r_refdef.view.viewport.x + r_refdef.view.viewport.width) ix2 = r_refdef.view.viewport.x + r_refdef.view.viewport.width;
2317         if (iy2 > r_refdef.view.viewport.y + r_refdef.view.viewport.height) iy2 = r_refdef.view.viewport.y + r_refdef.view.viewport.height;
2318
2319         // if it is inside out, it's not visible
2320         if (ix2 <= ix1 || iy2 <= iy1)
2321                 return true;
2322
2323         // the light area is visible, set up the scissor rectangle
2324         r_shadow_lightscissor[0] = ix1;
2325         r_shadow_lightscissor[1] = iy1;
2326         r_shadow_lightscissor[2] = ix2 - ix1;
2327         r_shadow_lightscissor[3] = iy2 - iy1;
2328
2329         r_refdef.stats.lights_scissored++;
2330         return false;
2331 }
2332
2333 static void R_Shadow_RenderLighting_Light_Vertex_Shading(int firstvertex, int numverts, int numtriangles, const int *element3i, const float *diffusecolor, const float *ambientcolor)
2334 {
2335         float *vertex3f = rsurface.vertex3f + 3 * firstvertex;
2336         float *normal3f = rsurface.normal3f + 3 * firstvertex;
2337         float *color4f = rsurface.array_color4f + 4 * firstvertex;
2338         float dist, dot, distintensity, shadeintensity, v[3], n[3];
2339         if (r_textureunits.integer >= 3)
2340         {
2341                 if (VectorLength2(diffusecolor) > 0)
2342                 {
2343                         for (;numverts > 0;numverts--, vertex3f += 3, normal3f += 3, color4f += 4)
2344                         {
2345                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
2346                                 Matrix4x4_Transform3x3(&rsurface.entitytolight, normal3f, n);
2347                                 if ((dot = DotProduct(n, v)) < 0)
2348                                 {
2349                                         shadeintensity = -dot / sqrt(VectorLength2(v) * VectorLength2(n));
2350                                         VectorMA(ambientcolor, shadeintensity, diffusecolor, color4f);
2351                                 }
2352                                 else
2353                                         VectorCopy(ambientcolor, color4f);
2354                                 if (r_refdef.fogenabled)
2355                                 {
2356                                         float f;
2357                                         f = FogPoint_Model(vertex3f);
2358                                         VectorScale(color4f, f, color4f);
2359                                 }
2360                                 color4f[3] = 1;
2361                         }
2362                 }
2363                 else
2364                 {
2365                         for (;numverts > 0;numverts--, vertex3f += 3, color4f += 4)
2366                         {
2367                                 VectorCopy(ambientcolor, color4f);
2368                                 if (r_refdef.fogenabled)
2369                                 {
2370                                         float f;
2371                                         Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
2372                                         f = FogPoint_Model(vertex3f);
2373                                         VectorScale(color4f, f, color4f);
2374                                 }
2375                                 color4f[3] = 1;
2376                         }
2377                 }
2378         }
2379         else if (r_textureunits.integer >= 2)
2380         {
2381                 if (VectorLength2(diffusecolor) > 0)
2382                 {
2383                         for (;numverts > 0;numverts--, vertex3f += 3, normal3f += 3, color4f += 4)
2384                         {
2385                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
2386                                 if ((dist = fabs(v[2])) < 1 && (distintensity = r_shadow_attentable[(int)(dist * ATTENTABLESIZE)]))
2387                                 {
2388                                         Matrix4x4_Transform3x3(&rsurface.entitytolight, normal3f, n);
2389                                         if ((dot = DotProduct(n, v)) < 0)
2390                                         {
2391                                                 shadeintensity = -dot / sqrt(VectorLength2(v) * VectorLength2(n));
2392                                                 color4f[0] = (ambientcolor[0] + shadeintensity * diffusecolor[0]) * distintensity;
2393                                                 color4f[1] = (ambientcolor[1] + shadeintensity * diffusecolor[1]) * distintensity;
2394                                                 color4f[2] = (ambientcolor[2] + shadeintensity * diffusecolor[2]) * distintensity;
2395                                         }
2396                                         else
2397                                         {
2398                                                 color4f[0] = ambientcolor[0] * distintensity;
2399                                                 color4f[1] = ambientcolor[1] * distintensity;
2400                                                 color4f[2] = ambientcolor[2] * distintensity;
2401                                         }
2402                                         if (r_refdef.fogenabled)
2403                                         {
2404                                                 float f;
2405                                                 f = FogPoint_Model(vertex3f);
2406                                                 VectorScale(color4f, f, color4f);
2407                                         }
2408                                 }
2409                                 else
2410                                         VectorClear(color4f);
2411                                 color4f[3] = 1;
2412                         }
2413                 }
2414                 else
2415                 {
2416                         for (;numverts > 0;numverts--, vertex3f += 3, color4f += 4)
2417                         {
2418                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
2419                                 if ((dist = fabs(v[2])) < 1 && (distintensity = r_shadow_attentable[(int)(dist * ATTENTABLESIZE)]))
2420                                 {
2421                                         color4f[0] = ambientcolor[0] * distintensity;
2422                                         color4f[1] = ambientcolor[1] * distintensity;
2423                                         color4f[2] = ambientcolor[2] * distintensity;
2424                                         if (r_refdef.fogenabled)
2425                                         {
2426                                                 float f;
2427                                                 f = FogPoint_Model(vertex3f);
2428                                                 VectorScale(color4f, f, color4f);
2429                                         }
2430                                 }
2431                                 else
2432                                         VectorClear(color4f);
2433                                 color4f[3] = 1;
2434                         }
2435                 }
2436         }
2437         else
2438         {
2439                 if (VectorLength2(diffusecolor) > 0)
2440                 {
2441                         for (;numverts > 0;numverts--, vertex3f += 3, normal3f += 3, color4f += 4)
2442                         {
2443                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
2444                                 if ((dist = VectorLength(v)) < 1 && (distintensity = r_shadow_attentable[(int)(dist * ATTENTABLESIZE)]))
2445                                 {
2446                                         distintensity = (1 - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist);
2447                                         Matrix4x4_Transform3x3(&rsurface.entitytolight, normal3f, n);
2448                                         if ((dot = DotProduct(n, v)) < 0)
2449                                         {
2450                                                 shadeintensity = -dot / sqrt(VectorLength2(v) * VectorLength2(n));
2451                                                 color4f[0] = (ambientcolor[0] + shadeintensity * diffusecolor[0]) * distintensity;
2452                                                 color4f[1] = (ambientcolor[1] + shadeintensity * diffusecolor[1]) * distintensity;
2453                                                 color4f[2] = (ambientcolor[2] + shadeintensity * diffusecolor[2]) * distintensity;
2454                                         }
2455                                         else
2456                                         {
2457                                                 color4f[0] = ambientcolor[0] * distintensity;
2458                                                 color4f[1] = ambientcolor[1] * distintensity;
2459                                                 color4f[2] = ambientcolor[2] * distintensity;
2460                                         }
2461                                         if (r_refdef.fogenabled)
2462                                         {
2463                                                 float f;
2464                                                 f = FogPoint_Model(vertex3f);
2465                                                 VectorScale(color4f, f, color4f);
2466                                         }
2467                                 }
2468                                 else
2469                                         VectorClear(color4f);
2470                                 color4f[3] = 1;
2471                         }
2472                 }
2473                 else
2474                 {
2475                         for (;numverts > 0;numverts--, vertex3f += 3, color4f += 4)
2476                         {
2477                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
2478                                 if ((dist = VectorLength(v)) < 1 && (distintensity = r_shadow_attentable[(int)(dist * ATTENTABLESIZE)]))
2479                                 {
2480                                         distintensity = (1 - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist);
2481                                         color4f[0] = ambientcolor[0] * distintensity;
2482                                         color4f[1] = ambientcolor[1] * distintensity;
2483                                         color4f[2] = ambientcolor[2] * distintensity;
2484                                         if (r_refdef.fogenabled)
2485                                         {
2486                                                 float f;
2487                                                 f = FogPoint_Model(vertex3f);
2488                                                 VectorScale(color4f, f, color4f);
2489                                         }
2490                                 }
2491                                 else
2492                                         VectorClear(color4f);
2493                                 color4f[3] = 1;
2494                         }
2495                 }
2496         }
2497 }
2498
2499 // TODO: use glTexGen instead of feeding vertices to texcoordpointer?
2500
2501 static void R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(int firstvertex, int numvertices, int numtriangles, const int *element3i)
2502 {
2503         int i;
2504         float       *out3f     = rsurface.array_texcoord3f + 3 * firstvertex;
2505         const float *vertex3f  = rsurface.vertex3f         + 3 * firstvertex;
2506         const float *svector3f = rsurface.svector3f        + 3 * firstvertex;
2507         const float *tvector3f = rsurface.tvector3f        + 3 * firstvertex;
2508         const float *normal3f  = rsurface.normal3f         + 3 * firstvertex;
2509         float lightdir[3];
2510         for (i = 0;i < numvertices;i++, vertex3f += 3, svector3f += 3, tvector3f += 3, normal3f += 3, out3f += 3)
2511         {
2512                 VectorSubtract(rsurface.entitylightorigin, vertex3f, lightdir);
2513                 // the cubemap normalizes this for us
2514                 out3f[0] = DotProduct(svector3f, lightdir);
2515                 out3f[1] = DotProduct(tvector3f, lightdir);
2516                 out3f[2] = DotProduct(normal3f, lightdir);
2517         }
2518 }
2519
2520 static void R_Shadow_GenTexCoords_Specular_NormalCubeMap(int firstvertex, int numvertices, int numtriangles, const int *element3i)
2521 {
2522         int i;
2523         float       *out3f     = rsurface.array_texcoord3f + 3 * firstvertex;
2524         const float *vertex3f  = rsurface.vertex3f         + 3 * firstvertex;
2525         const float *svector3f = rsurface.svector3f        + 3 * firstvertex;
2526         const float *tvector3f = rsurface.tvector3f        + 3 * firstvertex;
2527         const float *normal3f  = rsurface.normal3f         + 3 * firstvertex;
2528         float lightdir[3], eyedir[3], halfdir[3];
2529         for (i = 0;i < numvertices;i++, vertex3f += 3, svector3f += 3, tvector3f += 3, normal3f += 3, out3f += 3)
2530         {
2531                 VectorSubtract(rsurface.entitylightorigin, vertex3f, lightdir);
2532                 VectorNormalize(lightdir);
2533                 VectorSubtract(rsurface.modelorg, vertex3f, eyedir);
2534                 VectorNormalize(eyedir);
2535                 VectorAdd(lightdir, eyedir, halfdir);
2536                 // the cubemap normalizes this for us
2537                 out3f[0] = DotProduct(svector3f, halfdir);
2538                 out3f[1] = DotProduct(tvector3f, halfdir);
2539                 out3f[2] = DotProduct(normal3f, halfdir);
2540         }
2541 }
2542
2543 static void R_Shadow_RenderLighting_VisibleLighting(int firstvertex, int numvertices, int firsttriangle, int numtriangles, const int *element3i, const unsigned short *element3s, int element3i_bufferobject, int element3s_bufferobject, const vec3_t lightcolorbase, const vec3_t lightcolorpants, const vec3_t lightcolorshirt, rtexture_t *basetexture, rtexture_t *pantstexture, rtexture_t *shirttexture, rtexture_t *normalmaptexture, rtexture_t *glosstexture, float ambientscale, float diffusescale, float specularscale, qboolean dopants, qboolean doshirt)
2544 {
2545         // used to display how many times a surface is lit for level design purposes
2546         R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
2547 }
2548
2549 static void R_Shadow_RenderLighting_Light_GLSL(int firstvertex, int numvertices, int firsttriangle, int numtriangles, const int *element3i, const unsigned short *element3s, int element3i_bufferobject, int element3s_bufferobject, const vec3_t lightcolorbase, const vec3_t lightcolorpants, const vec3_t lightcolorshirt, rtexture_t *basetexture, rtexture_t *pantstexture, rtexture_t *shirttexture, rtexture_t *normalmaptexture, rtexture_t *glosstexture, float ambientscale, float diffusescale, float specularscale, qboolean dopants, qboolean doshirt)
2550 {
2551         // ARB2 GLSL shader path (GFFX5200, Radeon 9500)
2552         R_SetupSurfaceShader(lightcolorbase, false, ambientscale, diffusescale, specularscale, RSURFPASS_RTLIGHT);
2553         if ((rsurface.texture->currentmaterialflags & MATERIALFLAG_VERTEXTEXTUREBLEND))
2554                 R_Mesh_ColorPointer(rsurface.modellightmapcolor4f, rsurface.modellightmapcolor4f_bufferobject, rsurface.modellightmapcolor4f_bufferoffset);
2555         else
2556                 R_Mesh_ColorPointer(NULL, 0, 0);
2557         R_Mesh_TexMatrix(0, &rsurface.texture->currenttexmatrix);
2558         R_Mesh_TexMatrix(1, &rsurface.texture->currentbackgroundtexmatrix);
2559         R_Mesh_TexBind(GL20TU_NORMAL, R_GetTexture(rsurface.texture->currentskinframe->nmap));
2560         R_Mesh_TexBind(GL20TU_COLOR, R_GetTexture(rsurface.texture->basetexture));
2561         R_Mesh_TexBind(GL20TU_GLOSS, R_GetTexture(rsurface.texture->glosstexture));
2562         if (rsurface.texture->backgroundcurrentskinframe)
2563         {
2564                 R_Mesh_TexBind(GL20TU_SECONDARY_NORMAL, R_GetTexture(rsurface.texture->backgroundcurrentskinframe->nmap));
2565                 R_Mesh_TexBind(GL20TU_SECONDARY_COLOR, R_GetTexture(rsurface.texture->backgroundbasetexture));
2566                 R_Mesh_TexBind(GL20TU_SECONDARY_GLOSS, R_GetTexture(rsurface.texture->backgroundglosstexture));
2567                 R_Mesh_TexBind(GL20TU_SECONDARY_GLOW, R_GetTexture(rsurface.texture->backgroundcurrentskinframe->glow));
2568         }
2569         //R_Mesh_TexBindCubeMap(GL20TU_CUBE, R_GetTexture(rsurface.rtlight->currentcubemap));
2570         R_Mesh_TexBind(GL20TU_FOGMASK, R_GetTexture(r_texture_fogattenuation));
2571         if(rsurface.texture->colormapping)
2572         {
2573                 R_Mesh_TexBind(GL20TU_PANTS, R_GetTexture(rsurface.texture->currentskinframe->pants));
2574                 R_Mesh_TexBind(GL20TU_SHIRT, R_GetTexture(rsurface.texture->currentskinframe->shirt));
2575         }
2576         R_Mesh_TexBind(GL20TU_ATTENUATION, R_GetTexture(r_shadow_attenuationgradienttexture));
2577         R_Mesh_TexCoordPointer(0, 2, rsurface.texcoordtexture2f, rsurface.texcoordtexture2f_bufferobject, rsurface.texcoordtexture2f_bufferoffset);
2578         R_Mesh_TexCoordPointer(1, 3, rsurface.svector3f, rsurface.svector3f_bufferobject, rsurface.svector3f_bufferoffset);
2579         R_Mesh_TexCoordPointer(2, 3, rsurface.tvector3f, rsurface.tvector3f_bufferobject, rsurface.tvector3f_bufferoffset);
2580         R_Mesh_TexCoordPointer(3, 3, rsurface.normal3f, rsurface.normal3f_bufferobject, rsurface.normal3f_bufferoffset);
2581         if (rsurface.texture->currentmaterialflags & MATERIALFLAG_ALPHATEST)
2582         {
2583                 qglDepthFunc(GL_EQUAL);CHECKGLERROR
2584         }
2585         R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
2586         if (rsurface.texture->currentmaterialflags & MATERIALFLAG_ALPHATEST)
2587         {
2588                 qglDepthFunc(GL_LEQUAL);CHECKGLERROR
2589         }
2590 }
2591
2592 static void R_Shadow_RenderLighting_Light_Dot3_Finalize(int firstvertex, int numvertices, int firsttriangle, int numtriangles, const int *element3i, const unsigned short *element3s, int element3i_bufferobject, int element3s_bufferobject, float r, float g, float b)
2593 {
2594         // shared final code for all the dot3 layers
2595         int renders;
2596         GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 0);
2597         for (renders = 0;renders < 64 && (r > 0 || g > 0 || b > 0);renders++, r--, g--, b--)
2598         {
2599                 GL_Color(bound(0, r, 1), bound(0, g, 1), bound(0, b, 1), 1);
2600                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
2601         }
2602 }
2603
2604 static void R_Shadow_RenderLighting_Light_Dot3_AmbientPass(int firstvertex, int numvertices, int firsttriangle, int numtriangles, const int *element3i, const unsigned short *element3s, int element3i_bufferobject, int element3s_bufferobject, const vec3_t lightcolorbase, rtexture_t *basetexture, float colorscale)
2605 {
2606         rmeshstate_t m;
2607         // colorscale accounts for how much we multiply the brightness
2608         // during combine.
2609         //
2610         // mult is how many times the final pass of the lighting will be
2611         // performed to get more brightness than otherwise possible.
2612         //
2613         // Limit mult to 64 for sanity sake.
2614         GL_Color(1,1,1,1);
2615         if (r_shadow_texture3d.integer && rsurface.rtlight->currentcubemap != r_texture_whitecube && r_textureunits.integer >= 4)
2616         {
2617                 // 3 3D combine path (Geforce3, Radeon 8500)
2618                 memset(&m, 0, sizeof(m));
2619                 m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
2620                 m.pointer_texcoord3f[0] = rsurface.vertex3f;
2621                 m.pointer_texcoord_bufferobject[0] = rsurface.vertex3f_bufferobject;
2622                 m.pointer_texcoord_bufferoffset[0] = rsurface.vertex3f_bufferoffset;
2623                 m.texmatrix[0] = rsurface.entitytoattenuationxyz;
2624                 m.tex[1] = R_GetTexture(basetexture);
2625                 m.pointer_texcoord[1] = rsurface.texcoordtexture2f;
2626                 m.pointer_texcoord_bufferobject[1] = rsurface.texcoordtexture2f_bufferobject;
2627                 m.pointer_texcoord_bufferoffset[1] = rsurface.texcoordtexture2f_bufferoffset;
2628                 m.texmatrix[1] = rsurface.texture->currenttexmatrix;
2629                 m.texcubemap[2] = R_GetTexture(rsurface.rtlight->currentcubemap);
2630                 m.pointer_texcoord3f[2] = rsurface.vertex3f;
2631                 m.pointer_texcoord_bufferobject[2] = rsurface.vertex3f_bufferobject;
2632                 m.pointer_texcoord_bufferoffset[2] = rsurface.vertex3f_bufferoffset;
2633                 m.texmatrix[2] = rsurface.entitytolight;
2634                 GL_BlendFunc(GL_ONE, GL_ONE);
2635         }
2636         else if (r_shadow_texture3d.integer && rsurface.rtlight->currentcubemap == r_texture_whitecube && r_textureunits.integer >= 2)
2637         {
2638                 // 2 3D combine path (Geforce3, original Radeon)
2639                 memset(&m, 0, sizeof(m));
2640                 m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
2641                 m.pointer_texcoord3f[0] = rsurface.vertex3f;
2642                 m.pointer_texcoord_bufferobject[0] = rsurface.vertex3f_bufferobject;
2643                 m.pointer_texcoord_bufferoffset[0] = rsurface.vertex3f_bufferoffset;
2644                 m.texmatrix[0] = rsurface.entitytoattenuationxyz;
2645                 m.tex[1] = R_GetTexture(basetexture);
2646                 m.pointer_texcoord[1] = rsurface.texcoordtexture2f;
2647                 m.pointer_texcoord_bufferobject[1] = rsurface.texcoordtexture2f_bufferobject;
2648                 m.pointer_texcoord_bufferoffset[1] = rsurface.texcoordtexture2f_bufferoffset;
2649                 m.texmatrix[1] = rsurface.texture->currenttexmatrix;
2650                 GL_BlendFunc(GL_ONE, GL_ONE);
2651         }
2652         else if (r_textureunits.integer >= 4 && rsurface.rtlight->currentcubemap != r_texture_whitecube)
2653         {
2654                 // 4 2D combine path (Geforce3, Radeon 8500)
2655                 memset(&m, 0, sizeof(m));
2656                 m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
2657                 m.pointer_texcoord3f[0] = rsurface.vertex3f;
2658                 m.pointer_texcoord_bufferobject[0] = rsurface.vertex3f_bufferobject;
2659                 m.pointer_texcoord_bufferoffset[0] = rsurface.vertex3f_bufferoffset;
2660                 m.texmatrix[0] = rsurface.entitytoattenuationxyz;
2661                 m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
2662                 m.pointer_texcoord3f[1] = rsurface.vertex3f;
2663                 m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
2664                 m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
2665                 m.texmatrix[1] = rsurface.entitytoattenuationz;
2666                 m.tex[2] = R_GetTexture(basetexture);
2667                 m.pointer_texcoord[2] = rsurface.texcoordtexture2f;
2668                 m.pointer_texcoord_bufferobject[2] = rsurface.texcoordtexture2f_bufferobject;
2669                 m.pointer_texcoord_bufferoffset[2] = rsurface.texcoordtexture2f_bufferoffset;
2670                 m.texmatrix[2] = rsurface.texture->currenttexmatrix;
2671                 if (rsurface.rtlight->currentcubemap != r_texture_whitecube)
2672                 {
2673                         m.texcubemap[3] = R_GetTexture(rsurface.rtlight->currentcubemap);
2674                         m.pointer_texcoord3f[3] = rsurface.vertex3f;
2675                         m.pointer_texcoord_bufferobject[3] = rsurface.vertex3f_bufferobject;
2676                         m.pointer_texcoord_bufferoffset[3] = rsurface.vertex3f_bufferoffset;
2677                         m.texmatrix[3] = rsurface.entitytolight;
2678                 }
2679                 GL_BlendFunc(GL_ONE, GL_ONE);
2680         }
2681         else if (r_textureunits.integer >= 3 && rsurface.rtlight->currentcubemap == r_texture_whitecube)
2682         {
2683                 // 3 2D combine path (Geforce3, original Radeon)
2684                 memset(&m, 0, sizeof(m));
2685                 m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
2686                 m.pointer_texcoord3f[0] = rsurface.vertex3f;
2687                 m.pointer_texcoord_bufferobject[0] = rsurface.vertex3f_bufferobject;
2688                 m.pointer_texcoord_bufferoffset[0] = rsurface.vertex3f_bufferoffset;
2689                 m.texmatrix[0] = rsurface.entitytoattenuationxyz;
2690                 m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
2691                 m.pointer_texcoord3f[1] = rsurface.vertex3f;
2692                 m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
2693                 m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
2694                 m.texmatrix[1] = rsurface.entitytoattenuationz;
2695                 m.tex[2] = R_GetTexture(basetexture);
2696                 m.pointer_texcoord[2] = rsurface.texcoordtexture2f;
2697                 m.pointer_texcoord_bufferobject[2] = rsurface.texcoordtexture2f_bufferobject;
2698                 m.pointer_texcoord_bufferoffset[2] = rsurface.texcoordtexture2f_bufferoffset;
2699                 m.texmatrix[2] = rsurface.texture->currenttexmatrix;
2700                 GL_BlendFunc(GL_ONE, GL_ONE);
2701         }
2702         else
2703         {
2704                 // 2/2/2 2D combine path (any dot3 card)
2705                 memset(&m, 0, sizeof(m));
2706                 m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
2707                 m.pointer_texcoord3f[0] = rsurface.vertex3f;
2708                 m.pointer_texcoord_bufferobject[0] = rsurface.vertex3f_bufferobject;
2709                 m.pointer_texcoord_bufferoffset[0] = rsurface.vertex3f_bufferoffset;
2710                 m.texmatrix[0] = rsurface.entitytoattenuationxyz;
2711                 m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
2712                 m.pointer_texcoord3f[1] = rsurface.vertex3f;
2713                 m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
2714                 m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
2715                 m.texmatrix[1] = rsurface.entitytoattenuationz;
2716                 R_Mesh_TextureState(&m);
2717                 GL_ColorMask(0,0,0,1);
2718                 GL_BlendFunc(GL_ONE, GL_ZERO);
2719                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
2720
2721                 // second pass
2722                 memset(&m, 0, sizeof(m));
2723                 m.tex[0] = R_GetTexture(basetexture);
2724                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
2725                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
2726                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
2727                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
2728                 if (rsurface.rtlight->currentcubemap != r_texture_whitecube)
2729                 {
2730                         m.texcubemap[1] = R_GetTexture(rsurface.rtlight->currentcubemap);
2731                         m.pointer_texcoord3f[1] = rsurface.vertex3f;
2732                         m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
2733                         m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
2734                         m.texmatrix[1] = rsurface.entitytolight;
2735                 }
2736                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
2737         }
2738         // this final code is shared
2739         R_Mesh_TextureState(&m);
2740         R_Shadow_RenderLighting_Light_Dot3_Finalize(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorbase[0] * colorscale, lightcolorbase[1] * colorscale, lightcolorbase[2] * colorscale);
2741 }
2742
2743 static void R_Shadow_RenderLighting_Light_Dot3_DiffusePass(int firstvertex, int numvertices, int firsttriangle, int numtriangles, const int *element3i, const unsigned short *element3s, int element3i_bufferobject, int element3s_bufferobject, const vec3_t lightcolorbase, rtexture_t *basetexture, rtexture_t *normalmaptexture, float colorscale)
2744 {
2745         rmeshstate_t m;
2746         // colorscale accounts for how much we multiply the brightness
2747         // during combine.
2748         //
2749         // mult is how many times the final pass of the lighting will be
2750         // performed to get more brightness than otherwise possible.
2751         //
2752         // Limit mult to 64 for sanity sake.
2753         GL_Color(1,1,1,1);
2754         // generate normalization cubemap texcoords
2755         R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(firstvertex, numvertices, numtriangles, element3i);
2756         if (r_shadow_texture3d.integer && r_textureunits.integer >= 4)
2757         {
2758                 // 3/2 3D combine path (Geforce3, Radeon 8500)
2759                 memset(&m, 0, sizeof(m));
2760                 m.tex[0] = R_GetTexture(normalmaptexture);
2761                 m.texcombinergb[0] = GL_REPLACE;
2762                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
2763                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
2764                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
2765                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
2766                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
2767                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
2768                 m.pointer_texcoord3f[1] = rsurface.array_texcoord3f;
2769                 m.pointer_texcoord_bufferobject[1] = 0;
2770                 m.pointer_texcoord_bufferoffset[1] = 0;
2771                 m.tex3d[2] = R_GetTexture(r_shadow_attenuation3dtexture);
2772                 m.pointer_texcoord3f[2] = rsurface.vertex3f;
2773                 m.pointer_texcoord_bufferobject[2] = rsurface.vertex3f_bufferobject;
2774                 m.pointer_texcoord_bufferoffset[2] = rsurface.vertex3f_bufferoffset;
2775                 m.texmatrix[2] = rsurface.entitytoattenuationxyz;
2776                 R_Mesh_TextureState(&m);
2777                 GL_ColorMask(0,0,0,1);
2778                 GL_BlendFunc(GL_ONE, GL_ZERO);
2779                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
2780
2781                 // second pass
2782                 memset(&m, 0, sizeof(m));
2783                 m.tex[0] = R_GetTexture(basetexture);
2784                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
2785                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
2786                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
2787                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
2788                 if (rsurface.rtlight->currentcubemap != r_texture_whitecube)
2789                 {
2790                         m.texcubemap[1] = R_GetTexture(rsurface.rtlight->currentcubemap);
2791                         m.pointer_texcoord3f[1] = rsurface.vertex3f;
2792                         m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
2793                         m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
2794                         m.texmatrix[1] = rsurface.entitytolight;
2795                 }
2796                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
2797         }
2798         else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && rsurface.rtlight->currentcubemap != r_texture_whitecube)
2799         {
2800                 // 1/2/2 3D combine path (original Radeon)
2801                 memset(&m, 0, sizeof(m));
2802                 m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
2803                 m.pointer_texcoord3f[0] = rsurface.vertex3f;
2804                 m.pointer_texcoord_bufferobject[0] = rsurface.vertex3f_bufferobject;
2805                 m.pointer_texcoord_bufferoffset[0] = rsurface.vertex3f_bufferoffset;
2806                 m.texmatrix[0] = rsurface.entitytoattenuationxyz;
2807                 R_Mesh_TextureState(&m);
2808                 GL_ColorMask(0,0,0,1);
2809                 GL_BlendFunc(GL_ONE, GL_ZERO);
2810                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
2811
2812                 // second pass
2813                 memset(&m, 0, sizeof(m));
2814                 m.tex[0] = R_GetTexture(normalmaptexture);
2815                 m.texcombinergb[0] = GL_REPLACE;
2816                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
2817                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
2818                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
2819                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
2820                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
2821                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
2822                 m.pointer_texcoord3f[1] = rsurface.array_texcoord3f;
2823                 m.pointer_texcoord_bufferobject[1] = 0;
2824                 m.pointer_texcoord_bufferoffset[1] = 0;
2825                 R_Mesh_TextureState(&m);
2826                 GL_BlendFunc(GL_DST_ALPHA, GL_ZERO);
2827                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
2828
2829                 // second pass
2830                 memset(&m, 0, sizeof(m));
2831                 m.tex[0] = R_GetTexture(basetexture);
2832                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
2833                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
2834                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
2835                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
2836                 if (rsurface.rtlight->currentcubemap != r_texture_whitecube)
2837                 {
2838                         m.texcubemap[1] = R_GetTexture(rsurface.rtlight->currentcubemap);
2839                         m.pointer_texcoord3f[1] = rsurface.vertex3f;
2840                         m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
2841                         m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
2842                         m.texmatrix[1] = rsurface.entitytolight;
2843                 }
2844                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
2845         }
2846         else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && rsurface.rtlight->currentcubemap == r_texture_whitecube)
2847         {
2848                 // 2/2 3D combine path (original Radeon)
2849                 memset(&m, 0, sizeof(m));
2850                 m.tex[0] = R_GetTexture(normalmaptexture);
2851                 m.texcombinergb[0] = GL_REPLACE;
2852                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
2853                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
2854                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
2855                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
2856                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
2857                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
2858                 m.pointer_texcoord3f[1] = rsurface.array_texcoord3f;
2859                 m.pointer_texcoord_bufferobject[1] = 0;
2860                 m.pointer_texcoord_bufferoffset[1] = 0;
2861                 R_Mesh_TextureState(&m);
2862                 GL_ColorMask(0,0,0,1);
2863                 GL_BlendFunc(GL_ONE, GL_ZERO);
2864                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
2865
2866                 // second pass
2867                 memset(&m, 0, sizeof(m));
2868                 m.tex[0] = R_GetTexture(basetexture);
2869                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
2870                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
2871                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
2872                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
2873                 m.tex3d[1] = R_GetTexture(r_shadow_attenuation3dtexture);
2874                 m.pointer_texcoord3f[1] = rsurface.vertex3f;
2875                 m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
2876                 m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
2877                 m.texmatrix[1] = rsurface.entitytoattenuationxyz;
2878                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
2879         }
2880         else if (r_textureunits.integer >= 4)
2881         {
2882                 // 4/2 2D combine path (Geforce3, Radeon 8500)
2883                 memset(&m, 0, sizeof(m));
2884                 m.tex[0] = R_GetTexture(normalmaptexture);
2885                 m.texcombinergb[0] = GL_REPLACE;
2886                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
2887                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
2888                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
2889                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
2890                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
2891                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
2892                 m.pointer_texcoord3f[1] = rsurface.array_texcoord3f;
2893                 m.pointer_texcoord_bufferobject[1] = 0;
2894                 m.pointer_texcoord_bufferoffset[1] = 0;
2895                 m.tex[2] = R_GetTexture(r_shadow_attenuation2dtexture);
2896                 m.pointer_texcoord3f[2] = rsurface.vertex3f;
2897                 m.pointer_texcoord_bufferobject[2] = rsurface.vertex3f_bufferobject;
2898                 m.pointer_texcoord_bufferoffset[2] = rsurface.vertex3f_bufferoffset;
2899                 m.texmatrix[2] = rsurface.entitytoattenuationxyz;
2900                 m.tex[3] = R_GetTexture(r_shadow_attenuation2dtexture);
2901                 m.pointer_texcoord3f[3] = rsurface.vertex3f;
2902                 m.pointer_texcoord_bufferobject[3] = rsurface.vertex3f_bufferobject;
2903                 m.pointer_texcoord_bufferoffset[3] = rsurface.vertex3f_bufferoffset;
2904                 m.texmatrix[3] = rsurface.entitytoattenuationz;
2905                 R_Mesh_TextureState(&m);
2906                 GL_ColorMask(0,0,0,1);
2907                 GL_BlendFunc(GL_ONE, GL_ZERO);
2908                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
2909
2910                 // second pass
2911                 memset(&m, 0, sizeof(m));
2912                 m.tex[0] = R_GetTexture(basetexture);
2913                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
2914                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
2915                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
2916                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
2917                 if (rsurface.rtlight->currentcubemap != r_texture_whitecube)
2918                 {
2919                         m.texcubemap[1] = R_GetTexture(rsurface.rtlight->currentcubemap);
2920                         m.pointer_texcoord3f[1] = rsurface.vertex3f;
2921                         m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
2922                         m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
2923                         m.texmatrix[1] = rsurface.entitytolight;
2924                 }
2925                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
2926         }
2927         else
2928         {
2929                 // 2/2/2 2D combine path (any dot3 card)
2930                 memset(&m, 0, sizeof(m));
2931                 m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
2932                 m.pointer_texcoord3f[0] = rsurface.vertex3f;
2933                 m.pointer_texcoord_bufferobject[0] = rsurface.vertex3f_bufferobject;
2934                 m.pointer_texcoord_bufferoffset[0] = rsurface.vertex3f_bufferoffset;
2935                 m.texmatrix[0] = rsurface.entitytoattenuationxyz;
2936                 m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
2937                 m.pointer_texcoord3f[1] = rsurface.vertex3f;
2938                 m.pointer_texcoord_bufferobject[0] = rsurface.vertex3f_bufferobject;
2939                 m.pointer_texcoord_bufferoffset[0] = rsurface.vertex3f_bufferoffset;
2940                 m.texmatrix[1] = rsurface.entitytoattenuationz;
2941                 R_Mesh_TextureState(&m);
2942                 GL_ColorMask(0,0,0,1);
2943                 GL_BlendFunc(GL_ONE, GL_ZERO);
2944                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
2945
2946                 // second pass
2947                 memset(&m, 0, sizeof(m));
2948                 m.tex[0] = R_GetTexture(normalmaptexture);
2949                 m.texcombinergb[0] = GL_REPLACE;
2950                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
2951                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
2952                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
2953                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
2954                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
2955                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
2956                 m.pointer_texcoord3f[1] = rsurface.array_texcoord3f;
2957                 m.pointer_texcoord_bufferobject[1] = 0;
2958                 m.pointer_texcoord_bufferoffset[1] = 0;
2959                 R_Mesh_TextureState(&m);
2960                 GL_BlendFunc(GL_DST_ALPHA, GL_ZERO);
2961                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
2962
2963                 // second pass
2964                 memset(&m, 0, sizeof(m));
2965                 m.tex[0] = R_GetTexture(basetexture);
2966                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
2967                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
2968                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
2969                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
2970                 if (rsurface.rtlight->currentcubemap != r_texture_whitecube)
2971                 {
2972                         m.texcubemap[1] = R_GetTexture(rsurface.rtlight->currentcubemap);
2973                         m.pointer_texcoord3f[1] = rsurface.vertex3f;
2974                         m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
2975                         m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
2976                         m.texmatrix[1] = rsurface.entitytolight;
2977                 }
2978                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
2979         }
2980         // this final code is shared
2981         R_Mesh_TextureState(&m);
2982         R_Shadow_RenderLighting_Light_Dot3_Finalize(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorbase[0] * colorscale, lightcolorbase[1] * colorscale, lightcolorbase[2] * colorscale);
2983 }
2984
2985 static void R_Shadow_RenderLighting_Light_Dot3_SpecularPass(int firstvertex, int numvertices, int firsttriangle, int numtriangles, const int *element3i, const unsigned short *element3s, int element3i_bufferobject, int element3s_bufferobject, const vec3_t lightcolorbase, rtexture_t *glosstexture, rtexture_t *normalmaptexture, float colorscale)
2986 {
2987         float glossexponent;
2988         rmeshstate_t m;
2989         // FIXME: detect blendsquare!
2990         //if (!gl_support_blendsquare)
2991         //      return;
2992         GL_Color(1,1,1,1);
2993         // generate normalization cubemap texcoords
2994         R_Shadow_GenTexCoords_Specular_NormalCubeMap(firstvertex, numvertices, numtriangles, element3i);
2995         if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && rsurface.rtlight->currentcubemap != r_texture_whitecube)
2996         {
2997                 // 2/0/0/1/2 3D combine blendsquare path
2998                 memset(&m, 0, sizeof(m));
2999                 m.tex[0] = R_GetTexture(normalmaptexture);
3000                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
3001                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
3002                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
3003                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
3004                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
3005                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
3006                 m.pointer_texcoord3f[1] = rsurface.array_texcoord3f;
3007                 m.pointer_texcoord_bufferobject[1] = 0;
3008                 m.pointer_texcoord_bufferoffset[1] = 0;
3009                 R_Mesh_TextureState(&m);
3010                 GL_ColorMask(0,0,0,1);
3011                 // this squares the result
3012                 GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
3013                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
3014
3015                 // second and third pass
3016                 R_Mesh_ResetTextureState();
3017                 // square alpha in framebuffer a few times to make it shiny
3018                 GL_BlendFunc(GL_ZERO, GL_DST_ALPHA);
3019                 for (glossexponent = 2;glossexponent * 2 <= r_shadow_glossexponent.value;glossexponent *= 2)
3020                         R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
3021
3022                 // fourth pass
3023                 memset(&m, 0, sizeof(m));
3024                 m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
3025                 m.pointer_texcoord3f[0] = rsurface.vertex3f;
3026                 m.pointer_texcoord_bufferobject[0] = rsurface.vertex3f_bufferobject;
3027                 m.pointer_texcoord_bufferoffset[0] = rsurface.vertex3f_bufferoffset;
3028                 m.texmatrix[0] = rsurface.entitytoattenuationxyz;
3029                 R_Mesh_TextureState(&m);
3030                 GL_BlendFunc(GL_DST_ALPHA, GL_ZERO);
3031                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
3032
3033                 // fifth pass
3034                 memset(&m, 0, sizeof(m));
3035                 m.tex[0] = R_GetTexture(glosstexture);
3036                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
3037                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
3038                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
3039                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
3040                 if (rsurface.rtlight->currentcubemap != r_texture_whitecube)
3041                 {
3042                         m.texcubemap[1] = R_GetTexture(rsurface.rtlight->currentcubemap);
3043                         m.pointer_texcoord3f[1] = rsurface.vertex3f;
3044                         m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
3045                         m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
3046                         m.texmatrix[1] = rsurface.entitytolight;
3047                 }
3048                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
3049         }
3050         else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && rsurface.rtlight->currentcubemap == r_texture_whitecube /* && gl_support_blendsquare*/) // FIXME: detect blendsquare!
3051         {
3052                 // 2/0/0/2 3D combine blendsquare path
3053                 memset(&m, 0, sizeof(m));
3054                 m.tex[0] = R_GetTexture(normalmaptexture);
3055                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
3056                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
3057                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
3058                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
3059                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
3060                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
3061                 m.pointer_texcoord3f[1] = rsurface.array_texcoord3f;
3062                 m.pointer_texcoord_bufferobject[1] = 0;
3063                 m.pointer_texcoord_bufferoffset[1] = 0;
3064                 R_Mesh_TextureState(&m);
3065                 GL_ColorMask(0,0,0,1);
3066                 // this squares the result
3067                 GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
3068                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
3069
3070                 // second and third pass
3071                 R_Mesh_ResetTextureState();
3072                 // square alpha in framebuffer a few times to make it shiny
3073                 GL_BlendFunc(GL_ZERO, GL_DST_ALPHA);
3074                 for (glossexponent = 2;glossexponent * 2 <= r_shadow_glossexponent.value;glossexponent *= 2)
3075                         R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
3076
3077                 // fourth pass
3078                 memset(&m, 0, sizeof(m));
3079                 m.tex[0] = R_GetTexture(glosstexture);
3080                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
3081                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
3082                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
3083                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
3084                 m.tex3d[1] = R_GetTexture(r_shadow_attenuation3dtexture);
3085                 m.pointer_texcoord3f[1] = rsurface.vertex3f;
3086                 m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
3087                 m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
3088                 m.texmatrix[1] = rsurface.entitytoattenuationxyz;
3089                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
3090         }
3091         else
3092         {
3093                 // 2/0/0/2/2 2D combine blendsquare path
3094                 memset(&m, 0, sizeof(m));
3095                 m.tex[0] = R_GetTexture(normalmaptexture);
3096                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
3097                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
3098                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
3099                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
3100                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
3101                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
3102                 m.pointer_texcoord3f[1] = rsurface.array_texcoord3f;
3103                 m.pointer_texcoord_bufferobject[1] = 0;
3104                 m.pointer_texcoord_bufferoffset[1] = 0;
3105                 R_Mesh_TextureState(&m);
3106                 GL_ColorMask(0,0,0,1);
3107                 // this squares the result
3108                 GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
3109                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
3110
3111                 // second and third pass
3112                 R_Mesh_ResetTextureState();
3113                 // square alpha in framebuffer a few times to make it shiny
3114                 GL_BlendFunc(GL_ZERO, GL_DST_ALPHA);
3115                 for (glossexponent = 2;glossexponent * 2 <= r_shadow_glossexponent.value;glossexponent *= 2)
3116                         R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
3117
3118                 // fourth pass
3119                 memset(&m, 0, sizeof(m));
3120                 m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
3121                 m.pointer_texcoord3f[0] = rsurface.vertex3f;
3122                 m.pointer_texcoord_bufferobject[0] = rsurface.vertex3f_bufferobject;
3123                 m.pointer_texcoord_bufferoffset[0] = rsurface.vertex3f_bufferoffset;
3124                 m.texmatrix[0] = rsurface.entitytoattenuationxyz;
3125                 m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
3126                 m.pointer_texcoord3f[1] = rsurface.vertex3f;
3127                 m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
3128                 m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
3129                 m.texmatrix[1] = rsurface.entitytoattenuationz;
3130                 R_Mesh_TextureState(&m);
3131                 GL_BlendFunc(GL_DST_ALPHA, GL_ZERO);
3132                 R_Mesh_Draw(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject);
3133
3134                 // fifth pass
3135                 memset(&m, 0, sizeof(m));
3136                 m.tex[0] = R_GetTexture(glosstexture);
3137                 m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
3138                 m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
3139                 m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
3140                 m.texmatrix[0] = rsurface.texture->currenttexmatrix;
3141                 if (rsurface.rtlight->currentcubemap != r_texture_whitecube)
3142                 {
3143                         m.texcubemap[1] = R_GetTexture(rsurface.rtlight->currentcubemap);
3144                         m.pointer_texcoord3f[1] = rsurface.vertex3f;
3145                         m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
3146                         m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
3147                         m.texmatrix[1] = rsurface.entitytolight;
3148                 }
3149                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
3150         }
3151         // this final code is shared
3152         R_Mesh_TextureState(&m);
3153         R_Shadow_RenderLighting_Light_Dot3_Finalize(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorbase[0] * colorscale, lightcolorbase[1] * colorscale, lightcolorbase[2] * colorscale);
3154 }
3155
3156 static void R_Shadow_RenderLighting_Light_Dot3(int firstvertex, int numvertices, int firsttriangle, int numtriangles, const int *element3i, const unsigned short *element3s, int element3i_bufferobject, int element3s_bufferobject, const vec3_t lightcolorbase, const vec3_t lightcolorpants, const vec3_t lightcolorshirt, rtexture_t *basetexture, rtexture_t *pantstexture, rtexture_t *shirttexture, rtexture_t *normalmaptexture, rtexture_t *glosstexture, float ambientscale, float diffusescale, float specularscale, qboolean dopants, qboolean doshirt)
3157 {
3158         // ARB path (any Geforce, any Radeon)
3159         qboolean doambient = ambientscale > 0;
3160         qboolean dodiffuse = diffusescale > 0;
3161         qboolean dospecular = specularscale > 0;
3162         if (!doambient && !dodiffuse && !dospecular)
3163                 return;
3164         R_Mesh_ColorPointer(NULL, 0, 0);
3165         if (doambient)
3166                 R_Shadow_RenderLighting_Light_Dot3_AmbientPass(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorbase, basetexture, ambientscale * r_refdef.view.colorscale);
3167         if (dodiffuse)
3168                 R_Shadow_RenderLighting_Light_Dot3_DiffusePass(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorbase, basetexture, normalmaptexture, diffusescale * r_refdef.view.colorscale);
3169         if (dopants)
3170         {
3171                 if (doambient)
3172                         R_Shadow_RenderLighting_Light_Dot3_AmbientPass(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorpants, pantstexture, ambientscale * r_refdef.view.colorscale);
3173                 if (dodiffuse)
3174                         R_Shadow_RenderLighting_Light_Dot3_DiffusePass(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorpants, pantstexture, normalmaptexture, diffusescale * r_refdef.view.colorscale);
3175         }
3176         if (doshirt)
3177         {
3178                 if (doambient)
3179                         R_Shadow_RenderLighting_Light_Dot3_AmbientPass(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorshirt, shirttexture, ambientscale * r_refdef.view.colorscale);
3180                 if (dodiffuse)
3181                         R_Shadow_RenderLighting_Light_Dot3_DiffusePass(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorshirt, shirttexture, normalmaptexture, diffusescale * r_refdef.view.colorscale);
3182         }
3183         if (dospecular)
3184                 R_Shadow_RenderLighting_Light_Dot3_SpecularPass(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorbase, glosstexture, normalmaptexture, specularscale * r_refdef.view.colorscale);
3185 }
3186
3187 static void R_Shadow_RenderLighting_Light_Vertex_Pass(int firstvertex, int numvertices, int numtriangles, const int *element3i, vec3_t diffusecolor2, vec3_t ambientcolor2)
3188 {
3189         int renders;
3190         int i;
3191         int stop;
3192         int newfirstvertex;
3193         int newlastvertex;
3194         int newnumtriangles;
3195         int *newe;
3196         const int *e;
3197         float *c;
3198         int maxtriangles = 4096;
3199         int newelements[4096*3];
3200         R_Shadow_RenderLighting_Light_Vertex_Shading(firstvertex, numvertices, numtriangles, element3i, diffusecolor2, ambientcolor2);
3201         for (renders = 0;renders < 64;renders++)
3202         {
3203                 stop = true;
3204                 newfirstvertex = 0;
3205                 newlastvertex = 0;
3206                 newnumtriangles = 0;
3207                 newe = newelements;
3208                 // due to low fillrate on the cards this vertex lighting path is
3209                 // designed for, we manually cull all triangles that do not
3210                 // contain a lit vertex
3211                 // this builds batches of triangles from multiple surfaces and
3212                 // renders them at once
3213                 for (i = 0, e = element3i;i < numtriangles;i++, e += 3)
3214                 {
3215                         if (VectorLength2(rsurface.array_color4f + e[0] * 4) + VectorLength2(rsurface.array_color4f + e[1] * 4) + VectorLength2(rsurface.array_color4f + e[2] * 4) >= 0.01)
3216                         {
3217                                 if (newnumtriangles)
3218                                 {
3219                                         newfirstvertex = min(newfirstvertex, e[0]);
3220                                         newlastvertex  = max(newlastvertex, e[0]);
3221                                 }
3222                                 else
3223                                 {
3224                                         newfirstvertex = e[0];
3225                                         newlastvertex = e[0];
3226                                 }
3227                                 newfirstvertex = min(newfirstvertex, e[1]);
3228                                 newlastvertex  = max(newlastvertex, e[1]);
3229                                 newfirstvertex = min(newfirstvertex, e[2]);
3230                                 newlastvertex  = max(newlastvertex, e[2]);
3231                                 newe[0] = e[0];
3232                                 newe[1] = e[1];
3233                                 newe[2] = e[2];
3234                                 newnumtriangles++;
3235                                 newe += 3;
3236                                 if (newnumtriangles >= maxtriangles)
3237                                 {
3238                                         R_Mesh_Draw(newfirstvertex, newlastvertex - newfirstvertex + 1, 0, newnumtriangles, newelements, NULL, 0, 0);
3239                                         newnumtriangles = 0;
3240                                         newe = newelements;
3241                                         stop = false;
3242                                 }
3243                         }
3244                 }
3245                 if (newnumtriangles >= 1)
3246                 {
3247                         R_Mesh_Draw(newfirstvertex, newlastvertex - newfirstvertex + 1, 0, newnumtriangles, newelements, NULL, 0, 0);
3248                         stop = false;
3249                 }
3250                 // if we couldn't find any lit triangles, exit early
3251                 if (stop)
3252                         break;
3253                 // now reduce the intensity for the next overbright pass
3254                 // we have to clamp to 0 here incase the drivers have improper
3255                 // handling of negative colors
3256                 // (some old drivers even have improper handling of >1 color)
3257                 stop = true;
3258                 for (i = 0, c = rsurface.array_color4f + 4 * firstvertex;i < numvertices;i++, c += 4)
3259                 {
3260                         if (c[0] > 1 || c[1] > 1 || c[2] > 1)
3261                         {
3262                                 c[0] = max(0, c[0] - 1);
3263                                 c[1] = max(0, c[1] - 1);
3264                                 c[2] = max(0, c[2] - 1);
3265                                 stop = false;
3266                         }
3267                         else
3268                                 VectorClear(c);
3269                 }
3270                 // another check...
3271                 if (stop)
3272                         break;
3273         }
3274 }
3275
3276 static void R_Shadow_RenderLighting_Light_Vertex(int firstvertex, int numvertices, int numtriangles, const int *element3i, const vec3_t lightcolorbase, const vec3_t lightcolorpants, const vec3_t lightcolorshirt, rtexture_t *basetexture, rtexture_t *pantstexture, rtexture_t *shirttexture, rtexture_t *normalmaptexture, rtexture_t *glosstexture, float ambientscale, float diffusescale, float specularscale, qboolean dopants, qboolean doshirt)
3277 {
3278         // OpenGL 1.1 path (anything)
3279         float ambientcolorbase[3], diffusecolorbase[3];
3280         float ambientcolorpants[3], diffusecolorpants[3];
3281         float ambientcolorshirt[3], diffusecolorshirt[3];
3282         rmeshstate_t m;
3283         VectorScale(lightcolorbase, ambientscale * 2 * r_refdef.view.colorscale, ambientcolorbase);
3284         VectorScale(lightcolorbase, diffusescale * 2 * r_refdef.view.colorscale, diffusecolorbase);
3285         VectorScale(lightcolorpants, ambientscale * 2 * r_refdef.view.colorscale, ambientcolorpants);
3286         VectorScale(lightcolorpants, diffusescale * 2 * r_refdef.view.colorscale, diffusecolorpants);
3287         VectorScale(lightcolorshirt, ambientscale * 2 * r_refdef.view.colorscale, ambientcolorshirt);
3288         VectorScale(lightcolorshirt, diffusescale * 2 * r_refdef.view.colorscale, diffusecolorshirt);
3289         memset(&m, 0, sizeof(m));
3290         m.tex[0] = R_GetTexture(basetexture);
3291         m.texmatrix[0] = rsurface.texture->currenttexmatrix;
3292         m.pointer_texcoord[0] = rsurface.texcoordtexture2f;
3293         m.pointer_texcoord_bufferobject[0] = rsurface.texcoordtexture2f_bufferobject;
3294         m.pointer_texcoord_bufferoffset[0] = rsurface.texcoordtexture2f_bufferoffset;
3295         if (r_textureunits.integer >= 2)
3296         {
3297                 // voodoo2 or TNT
3298                 m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
3299                 m.texmatrix[1] = rsurface.entitytoattenuationxyz;
3300                 m.pointer_texcoord3f[1] = rsurface.vertex3f;
3301                 m.pointer_texcoord_bufferobject[1] = rsurface.vertex3f_bufferobject;
3302                 m.pointer_texcoord_bufferoffset[1] = rsurface.vertex3f_bufferoffset;
3303                 if (r_textureunits.integer >= 3)
3304                 {
3305                         // Voodoo4 or Kyro (or Geforce3/Radeon with r_shadow_dot3 off)
3306                         m.tex[2] = R_GetTexture(r_shadow_attenuation2dtexture);
3307                         m.texmatrix[2] = rsurface.entitytoattenuationz;
3308                         m.pointer_texcoord3f[2] = rsurface.vertex3f;
3309                         m.pointer_texcoord_bufferobject[2] = rsurface.vertex3f_bufferobject;
3310                         m.pointer_texcoord_bufferoffset[2] = rsurface.vertex3f_bufferoffset;
3311                 }
3312         }
3313         R_Mesh_TextureState(&m);
3314         //R_Mesh_TexBind(0, R_GetTexture(basetexture));
3315         R_Shadow_RenderLighting_Light_Vertex_Pass(firstvertex, numvertices, numtriangles, element3i, diffusecolorbase, ambientcolorbase);
3316         if (dopants)
3317         {
3318                 R_Mesh_TexBind(0, R_GetTexture(pantstexture));
3319                 R_Shadow_RenderLighting_Light_Vertex_Pass(firstvertex, numvertices, numtriangles, element3i, diffusecolorpants, ambientcolorpants);
3320         }
3321         if (doshirt)
3322         {
3323                 R_Mesh_TexBind(0, R_GetTexture(shirttexture));
3324                 R_Shadow_RenderLighting_Light_Vertex_Pass(firstvertex, numvertices, numtriangles, element3i, diffusecolorshirt, ambientcolorshirt);
3325         }
3326 }
3327
3328 extern cvar_t gl_lightmaps;
3329 void R_Shadow_RenderLighting(int firstvertex, int numvertices, int firsttriangle, int numtriangles, const int *element3i, const unsigned short *element3s, int element3i_bufferobject, int element3s_bufferobject)
3330 {
3331         float ambientscale, diffusescale, specularscale;
3332         vec3_t lightcolorbase, lightcolorpants, lightcolorshirt;
3333         rtexture_t *nmap;
3334         // calculate colors to render this texture with
3335         lightcolorbase[0] = rsurface.rtlight->currentcolor[0] * rsurface.texture->dlightcolor[0];
3336         lightcolorbase[1] = rsurface.rtlight->currentcolor[1] * rsurface.texture->dlightcolor[1];
3337         lightcolorbase[2] = rsurface.rtlight->currentcolor[2] * rsurface.texture->dlightcolor[2];
3338         ambientscale = rsurface.rtlight->ambientscale;
3339         diffusescale = rsurface.rtlight->diffusescale;
3340         specularscale = rsurface.rtlight->specularscale * rsurface.texture->specularscale;
3341         if (!r_shadow_usenormalmap.integer)
3342         {
3343                 ambientscale += 1.0f * diffusescale;
3344                 diffusescale = 0;
3345                 specularscale = 0;
3346         }
3347         if ((ambientscale + diffusescale) * VectorLength2(lightcolorbase) + specularscale * VectorLength2(lightcolorbase) < (1.0f / 1048576.0f))
3348                 return;
3349         RSurf_SetupDepthAndCulling();
3350         nmap = rsurface.texture->currentskinframe->nmap;
3351         if (gl_lightmaps.integer)
3352                 nmap = r_texture_blanknormalmap;
3353         if (rsurface.texture->colormapping && !gl_lightmaps.integer)
3354         {
3355                 qboolean dopants = rsurface.texture->currentskinframe->pants != NULL && VectorLength2(rsurface.colormap_pantscolor) >= (1.0f / 1048576.0f);
3356                 qboolean doshirt = rsurface.texture->currentskinframe->shirt != NULL && VectorLength2(rsurface.colormap_shirtcolor) >= (1.0f / 1048576.0f);
3357                 if (dopants)
3358                 {
3359                         lightcolorpants[0] = lightcolorbase[0] * rsurface.colormap_pantscolor[0];
3360                         lightcolorpants[1] = lightcolorbase[1] * rsurface.colormap_pantscolor[1];
3361                         lightcolorpants[2] = lightcolorbase[2] * rsurface.colormap_pantscolor[2];
3362                 }
3363                 else
3364                         VectorClear(lightcolorpants);
3365                 if (doshirt)
3366                 {
3367                         lightcolorshirt[0] = lightcolorbase[0] * rsurface.colormap_shirtcolor[0];
3368                         lightcolorshirt[1] = lightcolorbase[1] * rsurface.colormap_shirtcolor[1];
3369                         lightcolorshirt[2] = lightcolorbase[2] * rsurface.colormap_shirtcolor[2];
3370                 }
3371                 else
3372                         VectorClear(lightcolorshirt);
3373                 switch (r_shadow_rendermode)
3374                 {
3375                 case R_SHADOW_RENDERMODE_VISIBLELIGHTING:
3376                         GL_DepthTest(!(rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST) && !r_showdisabledepthtest.integer);
3377                         R_Shadow_RenderLighting_VisibleLighting(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorbase, lightcolorpants, lightcolorshirt, rsurface.texture->basetexture, rsurface.texture->currentskinframe->pants, rsurface.texture->currentskinframe->shirt, nmap, rsurface.texture->glosstexture, ambientscale, diffusescale, specularscale, dopants, doshirt);
3378                         break;
3379                 case R_SHADOW_RENDERMODE_LIGHT_GLSL:
3380                         R_Shadow_RenderLighting_Light_GLSL(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorbase, lightcolorpants, lightcolorshirt, rsurface.texture->basetexture, rsurface.texture->currentskinframe->pants, rsurface.texture->currentskinframe->shirt, nmap, rsurface.texture->glosstexture, ambientscale, diffusescale, specularscale, dopants, doshirt);
3381                         break;
3382                 case R_SHADOW_RENDERMODE_LIGHT_DOT3:
3383                         R_Shadow_RenderLighting_Light_Dot3(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorbase, lightcolorpants, lightcolorshirt, rsurface.texture->basetexture, rsurface.texture->currentskinframe->pants, rsurface.texture->currentskinframe->shirt, nmap, rsurface.texture->glosstexture, ambientscale, diffusescale, specularscale, dopants, doshirt);
3384                         break;
3385                 case R_SHADOW_RENDERMODE_LIGHT_VERTEX:
3386                         R_Shadow_RenderLighting_Light_Vertex(firstvertex, numvertices, numtriangles, element3i + firsttriangle * 3, lightcolorbase, lightcolorpants, lightcolorshirt, rsurface.texture->basetexture, rsurface.texture->currentskinframe->pants, rsurface.texture->currentskinframe->shirt, nmap, rsurface.texture->glosstexture, ambientscale, diffusescale, specularscale, dopants, doshirt);
3387                         break;
3388                 default:
3389                         Con_Printf("R_Shadow_RenderLighting: unknown r_shadow_rendermode %i\n", r_shadow_rendermode);
3390                         break;
3391                 }
3392         }
3393         else
3394         {
3395                 switch (r_shadow_rendermode)
3396                 {
3397                 case R_SHADOW_RENDERMODE_VISIBLELIGHTING:
3398                         GL_DepthTest(!(rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST) && !r_showdisabledepthtest.integer);
3399                         R_Shadow_RenderLighting_VisibleLighting(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorbase, vec3_origin, vec3_origin, rsurface.texture->basetexture, r_texture_black, r_texture_black, nmap, rsurface.texture->glosstexture, ambientscale, diffusescale, specularscale, false, false);
3400                         break;
3401                 case R_SHADOW_RENDERMODE_LIGHT_GLSL:
3402                         R_Shadow_RenderLighting_Light_GLSL(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorbase, vec3_origin, vec3_origin, rsurface.texture->basetexture, r_texture_black, r_texture_black, nmap, rsurface.texture->glosstexture, ambientscale, diffusescale, specularscale, false, false);
3403                         break;
3404                 case R_SHADOW_RENDERMODE_LIGHT_DOT3:
3405                         R_Shadow_RenderLighting_Light_Dot3(firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, element3i_bufferobject, element3s_bufferobject, lightcolorbase, vec3_origin, vec3_origin, rsurface.texture->basetexture, r_texture_black, r_texture_black, nmap, rsurface.texture->glosstexture, ambientscale, diffusescale, specularscale, false, false);
3406                         break;
3407                 case R_SHADOW_RENDERMODE_LIGHT_VERTEX:
3408                         R_Shadow_RenderLighting_Light_Vertex(firstvertex, numvertices, numtriangles, element3i + firsttriangle * 3, lightcolorbase, vec3_origin, vec3_origin, rsurface.texture->basetexture, r_texture_black, r_texture_black, nmap, rsurface.texture->glosstexture, ambientscale, diffusescale, specularscale, false, false);
3409                         break;
3410                 default:
3411                         Con_Printf("R_Shadow_RenderLighting: unknown r_shadow_rendermode %i\n", r_shadow_rendermode);
3412                         break;
3413                 }
3414         }
3415 }
3416
3417 void R_RTLight_Update(rtlight_t *rtlight, int isstatic, matrix4x4_t *matrix, vec3_t color, int style, const char *cubemapname, int shadow, vec_t corona, vec_t coronasizescale, vec_t ambientscale, vec_t diffusescale, vec_t specularscale, int flags)
3418 {
3419         matrix4x4_t tempmatrix = *matrix;
3420         Matrix4x4_Scale(&tempmatrix, r_shadow_lightradiusscale.value, 1);
3421
3422         // if this light has been compiled before, free the associated data
3423         R_RTLight_Uncompile(rtlight);
3424
3425         // clear it completely to avoid any lingering data
3426         memset(rtlight, 0, sizeof(*rtlight));
3427
3428         // copy the properties
3429         rtlight->matrix_lighttoworld = tempmatrix;
3430         Matrix4x4_Invert_Simple(&rtlight->matrix_worldtolight, &tempmatrix);
3431         Matrix4x4_OriginFromMatrix(&tempmatrix, rtlight->shadoworigin);
3432         rtlight->radius = Matrix4x4_ScaleFromMatrix(&tempmatrix);
3433         VectorCopy(color, rtlight->color);
3434         rtlight->cubemapname[0] = 0;
3435         if (cubemapname && cubemapname[0])
3436                 strlcpy(rtlight->cubemapname, cubemapname, sizeof(rtlight->cubemapname));
3437         rtlight->shadow = shadow;
3438         rtlight->corona = corona;
3439         rtlight->style = style;
3440         rtlight->isstatic = isstatic;
3441         rtlight->coronasizescale = coronasizescale;
3442         rtlight->ambientscale = ambientscale;
3443         rtlight->diffusescale = diffusescale;
3444         rtlight->specularscale = specularscale;
3445         rtlight->flags = flags;
3446
3447         // compute derived data
3448         //rtlight->cullradius = rtlight->radius;
3449         //rtlight->cullradius2 = rtlight->radius * rtlight->radius;
3450         rtlight->cullmins[0] = rtlight->shadoworigin[0] - rtlight->radius;
3451         rtlight->cullmins[1] = rtlight->shadoworigin[1] - rtlight->radius;
3452         rtlight->cullmins[2] = rtlight->shadoworigin[2] - rtlight->radius;
3453         rtlight->cullmaxs[0] = rtlight->shadoworigin[0] + rtlight->radius;
3454         rtlight->cullmaxs[1] = rtlight->shadoworigin[1] + rtlight->radius;
3455         rtlight->cullmaxs[2] = rtlight->shadoworigin[2] + rtlight->radius;
3456 }
3457
3458 // compiles rtlight geometry
3459 // (undone by R_FreeCompiledRTLight, which R_UpdateLight calls)
3460 void R_RTLight_Compile(rtlight_t *rtlight)
3461 {
3462         int i;
3463         int numsurfaces, numleafs, numleafpvsbytes, numshadowtrispvsbytes, numlighttrispvsbytes;
3464         int lighttris, shadowtris, shadowzpasstris, shadowzfailtris;
3465         entity_render_t *ent = r_refdef.scene.worldentity;
3466         dp_model_t *model = r_refdef.scene.worldmodel;
3467         unsigned char *data;
3468         shadowmesh_t *mesh;
3469
3470         // compile the light
3471         rtlight->compiled = true;
3472         rtlight->shadowmode = rtlight->shadow ? (int)r_shadow_shadowmode : -1;
3473         rtlight->static_numleafs = 0;
3474         rtlight->static_numleafpvsbytes = 0;
3475         rtlight->static_leaflist = NULL;
3476         rtlight->static_leafpvs = NULL;
3477         rtlight->static_numsurfaces = 0;
3478         rtlight->static_surfacelist = NULL;
3479         rtlight->static_shadowmap_receivers = 0x3F;
3480         rtlight->static_shadowmap_casters = 0x3F;
3481         rtlight->cullmins[0] = rtlight->shadoworigin[0] - rtlight->radius;
3482         rtlight->cullmins[1] = rtlight->shadoworigin[1] - rtlight->radius;
3483         rtlight->cullmins[2] = rtlight->shadoworigin[2] - rtlight->radius;
3484         rtlight->cullmaxs[0] = rtlight->shadoworigin[0] + rtlight->radius;
3485         rtlight->cullmaxs[1] = rtlight->shadoworigin[1] + rtlight->radius;
3486         rtlight->cullmaxs[2] = rtlight->shadoworigin[2] + rtlight->radius;
3487
3488         if (model && model->GetLightInfo)
3489         {
3490                 // this variable must be set for the CompileShadowVolume/CompileShadowMap code
3491                 r_shadow_compilingrtlight = rtlight;
3492                 R_Shadow_EnlargeLeafSurfaceTrisBuffer(model->brush.num_leafs, model->num_surfaces, model->brush.shadowmesh ? model->brush.shadowmesh->numtriangles : model->surfmesh.num_triangles, model->surfmesh.num_triangles);
3493                 model->GetLightInfo(ent, rtlight->shadoworigin, rtlight->radius, rtlight->cullmins, rtlight->cullmaxs, r_shadow_buffer_leaflist, r_shadow_buffer_leafpvs, &numleafs, r_shadow_buffer_surfacelist, r_shadow_buffer_surfacepvs, &numsurfaces, r_shadow_buffer_shadowtrispvs, r_shadow_buffer_lighttrispvs, r_shadow_buffer_visitingleafpvs);
3494                 numleafpvsbytes = (model->brush.num_leafs + 7) >> 3;
3495                 numshadowtrispvsbytes = ((model->brush.shadowmesh ? model->brush.shadowmesh->numtriangles : model->surfmesh.num_triangles) + 7) >> 3;
3496                 numlighttrispvsbytes = (model->surfmesh.num_triangles + 7) >> 3;
3497                 data = (unsigned char *)Mem_Alloc(r_main_mempool, sizeof(int) * numsurfaces + sizeof(int) * numleafs + numleafpvsbytes + numshadowtrispvsbytes + numlighttrispvsbytes);
3498                 rtlight->static_numsurfaces = numsurfaces;
3499                 rtlight->static_surfacelist = (int *)data;data += sizeof(int) * numsurfaces;
3500                 rtlight->static_numleafs = numleafs;
3501                 rtlight->static_leaflist = (int *)data;data += sizeof(int) * numleafs;
3502                 rtlight->static_numleafpvsbytes = numleafpvsbytes;
3503                 rtlight->static_leafpvs = (unsigned char *)data;data += numleafpvsbytes;
3504                 rtlight->static_numshadowtrispvsbytes = numshadowtrispvsbytes;
3505                 rtlight->static_shadowtrispvs = (unsigned char *)data;data += numshadowtrispvsbytes;
3506                 rtlight->static_numlighttrispvsbytes = numlighttrispvsbytes;
3507                 rtlight->static_lighttrispvs = (unsigned char *)data;data += numlighttrispvsbytes;
3508                 if (rtlight->static_numsurfaces)
3509                         memcpy(rtlight->static_surfacelist, r_shadow_buffer_surfacelist, rtlight->static_numsurfaces * sizeof(*rtlight->static_surfacelist));
3510                 if (rtlight->static_numleafs)
3511                         memcpy(rtlight->static_leaflist, r_shadow_buffer_leaflist, rtlight->static_numleafs * sizeof(*rtlight->static_leaflist));
3512                 if (rtlight->static_numleafpvsbytes)
3513                         memcpy(rtlight->static_leafpvs, r_shadow_buffer_leafpvs, rtlight->static_numleafpvsbytes);
3514                 if (rtlight->static_numshadowtrispvsbytes)
3515                         memcpy(rtlight->static_shadowtrispvs, r_shadow_buffer_shadowtrispvs, rtlight->static_numshadowtrispvsbytes);
3516                 if (rtlight->static_numlighttrispvsbytes)
3517                         memcpy(rtlight->static_lighttrispvs, r_shadow_buffer_lighttrispvs, rtlight->static_numlighttrispvsbytes);
3518                 switch (rtlight->shadowmode)
3519                 {
3520                 case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
3521                 case R_SHADOW_SHADOWMODE_SHADOWMAPRECTANGLE:
3522                 case R_SHADOW_SHADOWMODE_SHADOWMAPCUBESIDE:
3523                         if (model->CompileShadowMap && rtlight->shadow)
3524                                 model->CompileShadowMap(ent, rtlight->shadoworigin, NULL, rtlight->radius, numsurfaces, r_shadow_buffer_surfacelist);
3525                         break;
3526                 default:
3527                         if (model->CompileShadowVolume && rtlight->shadow)
3528                                 model->CompileShadowVolume(ent, rtlight->shadoworigin, NULL, rtlight->radius, numsurfaces, r_shadow_buffer_surfacelist);
3529                         break;
3530                 }
3531                 // now we're done compiling the rtlight
3532                 r_shadow_compilingrtlight = NULL;
3533         }
3534
3535
3536         // use smallest available cullradius - box radius or light radius
3537         //rtlight->cullradius = RadiusFromBoundsAndOrigin(rtlight->cullmins, rtlight->cullmaxs, rtlight->shadoworigin);
3538         //rtlight->cullradius = min(rtlight->cullradius, rtlight->radius);
3539
3540         shadowzpasstris = 0;
3541         if (rtlight->static_meshchain_shadow_zpass)
3542                 for (mesh = rtlight->static_meshchain_shadow_zpass;mesh;mesh = mesh->next)
3543                         shadowzpasstris += mesh->numtriangles;
3544
3545         shadowzfailtris = 0;
3546         if (rtlight->static_meshchain_shadow_zfail)
3547                 for (mesh = rtlight->static_meshchain_shadow_zfail;mesh;mesh = mesh->next)
3548                         shadowzfailtris += mesh->numtriangles;
3549
3550         lighttris = 0;
3551         if (rtlight->static_numlighttrispvsbytes)
3552                 for (i = 0;i < rtlight->static_numlighttrispvsbytes*8;i++)
3553                         if (CHECKPVSBIT(rtlight->static_lighttrispvs, i))
3554                                 lighttris++;
3555
3556         shadowtris = 0;
3557         if (rtlight->static_numlighttrispvsbytes)
3558                 for (i = 0;i < rtlight->static_numshadowtrispvsbytes*8;i++)
3559                         if (CHECKPVSBIT(rtlight->static_shadowtrispvs, i))
3560                                 shadowtris++;
3561
3562         if (developer.integer >= 10)
3563                 Con_Printf("static light built: %f %f %f : %f %f %f box, %i light triangles, %i shadow triangles, %i zpass/%i zfail compiled shadow volume triangles\n", rtlight->cullmins[0], rtlight->cullmins[1], rtlight->cullmins[2], rtlight->cullmaxs[0], rtlight->cullmaxs[1], rtlight->cullmaxs[2], lighttris, shadowtris, shadowzpasstris, shadowzfailtris);
3564 }
3565
3566 void R_RTLight_Uncompile(rtlight_t *rtlight)
3567 {
3568         if (rtlight->compiled)
3569         {
3570                 if (rtlight->static_meshchain_shadow_zpass)
3571                         Mod_ShadowMesh_Free(rtlight->static_meshchain_shadow_zpass);
3572                 rtlight->static_meshchain_shadow_zpass = NULL;
3573                 if (rtlight->static_meshchain_shadow_zfail)
3574                         Mod_ShadowMesh_Free(rtlight->static_meshchain_shadow_zfail);
3575                 rtlight->static_meshchain_shadow_zfail = NULL;
3576                 if (rtlight->static_meshchain_shadow_shadowmap)
3577                         Mod_ShadowMesh_Free(rtlight->static_meshchain_shadow_shadowmap);
3578                 rtlight->static_meshchain_shadow_shadowmap = NULL;
3579                 // these allocations are grouped
3580                 if (rtlight->static_surfacelist)
3581                         Mem_Free(rtlight->static_surfacelist);
3582                 rtlight->static_numleafs = 0;
3583                 rtlight->static_numleafpvsbytes = 0;
3584                 rtlight->static_leaflist = NULL;
3585                 rtlight->static_leafpvs = NULL;
3586                 rtlight->static_numsurfaces = 0;
3587                 rtlight->static_surfacelist = NULL;
3588                 rtlight->static_numshadowtrispvsbytes = 0;
3589                 rtlight->static_shadowtrispvs = NULL;
3590                 rtlight->static_numlighttrispvsbytes = 0;
3591                 rtlight->static_lighttrispvs = NULL;
3592                 rtlight->compiled = false;
3593         }
3594 }
3595
3596 void R_Shadow_UncompileWorldLights(void)
3597 {
3598         size_t lightindex;
3599         dlight_t *light;
3600         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
3601         for (lightindex = 0;lightindex < range;lightindex++)
3602         {
3603                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
3604                 if (!light)
3605                         continue;
3606                 R_RTLight_Uncompile(&light->rtlight);
3607         }
3608 }
3609
3610 void R_Shadow_ComputeShadowCasterCullingPlanes(rtlight_t *rtlight)
3611 {
3612         int i, j;
3613         mplane_t plane;
3614         // reset the count of frustum planes
3615         // see rsurface.rtlight_frustumplanes definition for how much this array
3616         // can hold
3617         rsurface.rtlight_numfrustumplanes = 0;
3618
3619         // haven't implemented a culling path for ortho rendering
3620         if (!r_refdef.view.useperspective)
3621         {
3622                 // check if the light is on screen and copy the 4 planes if it is
3623                 for (i = 0;i < 4;i++)
3624                         if (PlaneDiff(rtlight->shadoworigin, &r_refdef.view.frustum[i]) < -0.03125)
3625                                 break;
3626                 if (i == 4)
3627                         for (i = 0;i < 4;i++)
3628                                 rsurface.rtlight_frustumplanes[rsurface.rtlight_numfrustumplanes++] = r_refdef.view.frustum[i];
3629                 return;
3630         }
3631
3632 #if 1
3633         // generate a deformed frustum that includes the light origin, this is
3634         // used to cull shadow casting surfaces that can not possibly cast a
3635         // shadow onto the visible light-receiving surfaces, which can be a
3636         // performance gain
3637         //
3638         // if the light origin is onscreen the result will be 4 planes exactly
3639         // if the light origin is offscreen on only one axis the result will
3640         // be exactly 5 planes (split-side case)
3641         // if the light origin is offscreen on two axes the result will be
3642         // exactly 4 planes (stretched corner case)
3643         for (i = 0;i < 4;i++)
3644         {
3645                 // quickly reject standard frustum planes that put the light
3646                 // origin outside the frustum
3647                 if (PlaneDiff(rtlight->shadoworigin, &r_refdef.view.frustum[i]) < -0.03125)
3648                         continue;
3649                 // copy the plane
3650                 rsurface.rtlight_frustumplanes[rsurface.rtlight_numfrustumplanes++] = r_refdef.view.frustum[i];
3651         }
3652         // if all the standard frustum planes were accepted, the light is onscreen
3653         // otherwise we need to generate some more planes below...
3654         if (rsurface.rtlight_numfrustumplanes < 4)
3655         {
3656                 // at least one of the stock frustum planes failed, so we need to
3657                 // create one or two custom planes to enclose the light origin
3658                 for (i = 0;i < 4;i++)
3659                 {
3660                         // create a plane using the view origin and light origin, and a
3661                         // single point from the frustum corner set
3662                         TriangleNormal(r_refdef.view.origin, r_refdef.view.frustumcorner[i], rtlight->shadoworigin, plane.normal);
3663                         VectorNormalize(plane.normal);
3664                         plane.dist = DotProduct(r_refdef.view.origin, plane.normal);
3665                         // see if this plane is backwards and flip it if so
3666                         for (j = 0;j < 4;j++)
3667                                 if (j != i && DotProduct(r_refdef.view.frustumcorner[j], plane.normal) - plane.dist < -0.03125)
3668                                         break;
3669                         if (j < 4)
3670                         {
3671                                 VectorNegate(plane.normal, plane.normal);
3672                                 plane.dist *= -1;
3673                                 // flipped plane, test again to see if it is now valid
3674                                 for (j = 0;j < 4;j++)
3675                                         if (j != i && DotProduct(r_refdef.view.frustumcorner[j], plane.normal) - plane.dist < -0.03125)
3676                                                 break;
3677                                 // if the plane is still not valid, then it is dividing the
3678                                 // frustum and has to be rejected
3679                                 if (j < 4)
3680                                         continue;
3681                         }
3682                         // we have created a valid plane, compute extra info
3683                         PlaneClassify(&plane);
3684                         // copy the plane
3685                         rsurface.rtlight_frustumplanes[rsurface.rtlight_numfrustumplanes++] = plane;
3686 #if 1
3687                         // if we've found 5 frustum planes then we have constructed a
3688                         // proper split-side case and do not need to keep searching for
3689                         // planes to enclose the light origin
3690                         if (rsurface.rtlight_numfrustumplanes == 5)
3691                                 break;
3692 #endif
3693                 }
3694         }
3695 #endif
3696
3697 #if 0
3698         for (i = 0;i < rsurface.rtlight_numfrustumplanes;i++)
3699         {
3700                 plane = rsurface.rtlight_frustumplanes[i];
3701                 Con_Printf("light %p plane #%i %f %f %f : %f (%f %f %f %f %f)\n", rtlight, i, plane.normal[0], plane.normal[1], plane.normal[2], plane.dist, PlaneDiff(r_refdef.view.frustumcorner[0], &plane), PlaneDiff(r_refdef.view.frustumcorner[1], &plane), PlaneDiff(r_refdef.view.frustumcorner[2], &plane), PlaneDiff(r_refdef.view.frustumcorner[3], &plane), PlaneDiff(rtlight->shadoworigin, &plane));
3702         }
3703 #endif
3704
3705 #if 0
3706         // now add the light-space box planes if the light box is rotated, as any
3707         // caster outside the oriented light box is irrelevant (even if it passed
3708         // the worldspace light box, which is axial)
3709         if (rtlight->matrix_lighttoworld.m[0][0] != 1 || rtlight->matrix_lighttoworld.m[1][1] != 1 || rtlight->matrix_lighttoworld.m[2][2] != 1)
3710         {
3711                 for (i = 0;i < 6;i++)
3712                 {
3713                         vec3_t v;
3714                         VectorClear(v);
3715                         v[i >> 1] = (i & 1) ? -1 : 1;
3716                         Matrix4x4_Transform(&rtlight->matrix_lighttoworld, v, plane.normal);
3717                         VectorSubtract(plane.normal, rtlight->shadoworigin, plane.normal);
3718                         plane.dist = VectorNormalizeLength(plane.normal);
3719                         plane.dist += DotProduct(plane.normal, rtlight->shadoworigin);
3720                         rsurface.rtlight_frustumplanes[rsurface.rtlight_numfrustumplanes++] = plane;
3721                 }
3722         }
3723 #endif
3724
3725 #if 0
3726         // add the world-space reduced box planes
3727         for (i = 0;i < 6;i++)
3728         {
3729                 VectorClear(plane.normal);
3730                 plane.normal[i >> 1] = (i & 1) ? -1 : 1;
3731                 plane.dist = (i & 1) ? -rsurface.rtlight_cullmaxs[i >> 1] : rsurface.rtlight_cullmins[i >> 1];
3732                 rsurface.rtlight_frustumplanes[rsurface.rtlight_numfrustumplanes++] = plane;
3733         }
3734 #endif
3735
3736 #if 0
3737         {
3738         int j, oldnum;
3739         vec3_t points[8];
3740         vec_t bestdist;
3741         // reduce all plane distances to tightly fit the rtlight cull box, which
3742         // is in worldspace
3743         VectorSet(points[0], rsurface.rtlight_cullmins[0], rsurface.rtlight_cullmins[1], rsurface.rtlight_cullmins[2]);
3744         VectorSet(points[1], rsurface.rtlight_cullmaxs[0], rsurface.rtlight_cullmins[1], rsurface.rtlight_cullmins[2]);
3745         VectorSet(points[2], rsurface.rtlight_cullmins[0], rsurface.rtlight_cullmaxs[1], rsurface.rtlight_cullmins[2]);
3746         VectorSet(points[3], rsurface.rtlight_cullmaxs[0], rsurface.rtlight_cullmaxs[1], rsurface.rtlight_cullmins[2]);
3747         VectorSet(points[4], rsurface.rtlight_cullmins[0], rsurface.rtlight_cullmins[1], rsurface.rtlight_cullmaxs[2]);
3748         VectorSet(points[5], rsurface.rtlight_cullmaxs[0], rsurface.rtlight_cullmins[1], rsurface.rtlight_cullmaxs[2]);
3749         VectorSet(points[6], rsurface.rtlight_cullmins[0], rsurface.rtlight_cullmaxs[1], rsurface.rtlight_cullmaxs[2]);
3750         VectorSet(points[7], rsurface.rtlight_cullmaxs[0], rsurface.rtlight_cullmaxs[1], rsurface.rtlight_cullmaxs[2]);
3751         oldnum = rsurface.rtlight_numfrustumplanes;
3752         rsurface.rtlight_numfrustumplanes = 0;
3753         for (j = 0;j < oldnum;j++)
3754         {
3755                 // find the nearest point on the box to this plane
3756                 bestdist = DotProduct(rsurface.rtlight_frustumplanes[j].normal, points[0]);
3757                 for (i = 1;i < 8;i++)
3758                 {
3759                         dist = DotProduct(rsurface.rtlight_frustumplanes[j].normal, points[i]);
3760                         if (bestdist > dist)
3761                                 bestdist = dist;
3762                 }
3763                 Con_Printf("light %p %splane #%i %f %f %f : %f < %f\n", rtlight, rsurface.rtlight_frustumplanes[j].dist < bestdist + 0.03125 ? "^2" : "^1", j, rsurface.rtlight_frustumplanes[j].normal[0], rsurface.rtlight_frustumplanes[j].normal[1], rsurface.rtlight_frustumplanes[j].normal[2], rsurface.rtlight_frustumplanes[j].dist, bestdist);
3764                 // if the nearest point is near or behind the plane, we want this
3765                 // plane, otherwise the plane is useless as it won't cull anything
3766                 if (rsurface.rtlight_frustumplanes[j].dist < bestdist + 0.03125)
3767                 {
3768                         PlaneClassify(&rsurface.rtlight_frustumplanes[j]);
3769                         rsurface.rtlight_frustumplanes[rsurface.rtlight_numfrustumplanes++] = rsurface.rtlight_frustumplanes[j];
3770                 }
3771         }
3772         }
3773 #endif
3774 }
3775
3776 void R_Shadow_DrawWorldShadow_ShadowMap(int numsurfaces, int *surfacelist, const unsigned char *trispvs, const unsigned char *surfacesides)
3777 {
3778         shadowmesh_t *mesh;
3779
3780         RSurf_ActiveWorldEntity();
3781
3782         if (rsurface.rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
3783         {
3784                 CHECKGLERROR
3785                 GL_CullFace(GL_NONE);
3786         mesh = rsurface.rtlight->static_meshchain_shadow_shadowmap;
3787         for (;mesh;mesh = mesh->next)
3788         {
3789                         if (!mesh->sidetotals[r_shadow_shadowmapside])
3790                                 continue;
3791             r_refdef.stats.lights_shadowtriangles += mesh->sidetotals[r_shadow_shadowmapside];
3792             R_Mesh_VertexPointer(mesh->vertex3f, mesh->vbo, mesh->vbooffset_vertex3f);
3793             R_Mesh_Draw(0, mesh->numverts, mesh->sideoffsets[r_shadow_shadowmapside], mesh->sidetotals[r_shadow_shadowmapside], mesh->element3i, mesh->element3s, mesh->ebo3i, mesh->ebo3s);
3794         }
3795         CHECKGLERROR
3796     }
3797         else if (r_refdef.scene.worldentity->model)
3798                 r_refdef.scene.worldmodel->DrawShadowMap(r_shadow_shadowmapside, r_refdef.scene.worldentity, rsurface.rtlight->shadoworigin, NULL, rsurface.rtlight->radius, numsurfaces, surfacelist, surfacesides, rsurface.rtlight_cullmins, rsurface.rtlight_cullmaxs);
3799
3800         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3801 }
3802
3803 void R_Shadow_DrawWorldShadow_ShadowVolume(int numsurfaces, int *surfacelist, const unsigned char *trispvs)
3804 {
3805         qboolean zpass;
3806         shadowmesh_t *mesh;
3807         int t, tend;
3808         int surfacelistindex;
3809         msurface_t *surface;
3810
3811         RSurf_ActiveWorldEntity();
3812
3813         if (rsurface.rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
3814         {
3815                 CHECKGLERROR
3816                 zpass = R_Shadow_UseZPass(r_refdef.scene.worldmodel->normalmins, r_refdef.scene.worldmodel->normalmaxs);
3817                 R_Shadow_RenderMode_StencilShadowVolumes(zpass);
3818                 mesh = zpass ? rsurface.rtlight->static_meshchain_shadow_zpass : rsurface.rtlight->static_meshchain_shadow_zfail;
3819                 for (;mesh;mesh = mesh->next)
3820                 {
3821                         r_refdef.stats.lights_shadowtriangles += mesh->numtriangles;
3822                         R_Mesh_VertexPointer(mesh->vertex3f, mesh->vbo, mesh->vbooffset_vertex3f);
3823                         GL_LockArrays(0, mesh->numverts);
3824                         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZPASS_STENCIL)
3825                         {
3826                                 // increment stencil if frontface is infront of depthbuffer
3827                                 GL_CullFace(r_refdef.view.cullface_back);
3828                                 qglStencilOp(GL_KEEP, GL_KEEP, GL_INCR);CHECKGLERROR
3829                                 R_Mesh_Draw(0, mesh->numverts, 0, mesh->numtriangles, mesh->element3i, mesh->element3s, mesh->ebo3i, mesh->ebo3s);
3830                                 // decrement stencil if backface is infront of depthbuffer
3831                                 GL_CullFace(r_refdef.view.cullface_front);
3832                                 qglStencilOp(GL_KEEP, GL_KEEP, GL_DECR);CHECKGLERROR
3833                         }
3834                         else if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZFAIL_STENCIL)
3835                         {
3836                                 // decrement stencil if backface is behind depthbuffer
3837                                 GL_CullFace(r_refdef.view.cullface_front);
3838                                 qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);CHECKGLERROR
3839                                 R_Mesh_Draw(0, mesh->numverts, 0, mesh->numtriangles, mesh->element3i, mesh->element3s, mesh->ebo3i, mesh->ebo3s);
3840                                 // increment stencil if frontface is behind depthbuffer
3841                                 GL_CullFace(r_refdef.view.cullface_back);
3842                                 qglStencilOp(GL_KEEP, GL_INCR, GL_KEEP);CHECKGLERROR
3843                         }
3844                         R_Mesh_Draw(0, mesh->numverts, 0, mesh->numtriangles, mesh->element3i, mesh->element3s, mesh->ebo3i, mesh->ebo3s);
3845                         GL_LockArrays(0, 0);
3846                 }
3847                 CHECKGLERROR
3848         }
3849         else if (numsurfaces && r_refdef.scene.worldmodel->brush.shadowmesh && r_shadow_culltriangles.integer)
3850         {
3851                 R_Shadow_PrepareShadowMark(r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles);
3852                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
3853                 {
3854                         surface = r_refdef.scene.worldmodel->data_surfaces + surfacelist[surfacelistindex];
3855                         for (t = surface->num_firstshadowmeshtriangle, tend = t + surface->num_triangles;t < tend;t++)
3856                                 if (CHECKPVSBIT(trispvs, t))
3857                                         shadowmarklist[numshadowmark++] = t;
3858                 }
3859                 R_Shadow_VolumeFromList(r_refdef.scene.worldmodel->brush.shadowmesh->numverts, r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles, r_refdef.scene.worldmodel->brush.shadowmesh->vertex3f, r_refdef.scene.worldmodel->brush.shadowmesh->element3i, r_refdef.scene.worldmodel->brush.shadowmesh->neighbor3i, rsurface.rtlight->shadoworigin, NULL, rsurface.rtlight->radius + r_refdef.scene.worldmodel->radius*2 + r_shadow_projectdistance.value, numshadowmark, shadowmarklist, r_refdef.scene.worldmodel->normalmins, r_refdef.scene.worldmodel->normalmaxs);
3860         }
3861         else if (numsurfaces)
3862                 r_refdef.scene.worldmodel->DrawShadowVolume(r_refdef.scene.worldentity, rsurface.rtlight->shadoworigin, NULL, rsurface.rtlight->radius, numsurfaces, surfacelist, rsurface.rtlight_cullmins, rsurface.rtlight_cullmaxs);
3863
3864         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3865 }
3866
3867 void R_Shadow_DrawEntityShadow(entity_render_t *ent)
3868 {
3869         vec3_t relativeshadoworigin, relativeshadowmins, relativeshadowmaxs;
3870         vec_t relativeshadowradius;
3871         RSurf_ActiveModelEntity(ent, false, false);
3872         Matrix4x4_Transform(&ent->inversematrix, rsurface.rtlight->shadoworigin, relativeshadoworigin);
3873         relativeshadowradius = rsurface.rtlight->radius / ent->scale;
3874         relativeshadowmins[0] = relativeshadoworigin[0] - relativeshadowradius;
3875         relativeshadowmins[1] = relativeshadoworigin[1] - relativeshadowradius;
3876         relativeshadowmins[2] = relativeshadoworigin[2] - relativeshadowradius;
3877         relativeshadowmaxs[0] = relativeshadoworigin[0] + relativeshadowradius;
3878         relativeshadowmaxs[1] = relativeshadoworigin[1] + relativeshadowradius;
3879         relativeshadowmaxs[2] = relativeshadoworigin[2] + relativeshadowradius;
3880         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_SHADOWMAPRECTANGLE || r_shadow_rendermode == R_SHADOW_RENDERMODE_SHADOWMAPCUBESIDE || r_shadow_rendermode == R_SHADOW_RENDERMODE_SHADOWMAP2D)
3881         {
3882                 ent->model->DrawShadowMap(r_shadow_shadowmapside, ent, relativeshadoworigin, NULL, relativeshadowradius, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, NULL, relativeshadowmins, relativeshadowmaxs);
3883         }
3884         else
3885                 ent->model->DrawShadowVolume(ent, relativeshadoworigin, NULL, relativeshadowradius, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, relativeshadowmins, relativeshadowmaxs);
3886         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3887 }
3888
3889 void R_Shadow_SetupEntityLight(const entity_render_t *ent)
3890 {
3891         // set up properties for rendering light onto this entity
3892         RSurf_ActiveModelEntity(ent, true, true);
3893         GL_AlphaTest(false);
3894         Matrix4x4_Concat(&rsurface.entitytolight, &rsurface.rtlight->matrix_worldtolight, &ent->matrix);
3895         Matrix4x4_Concat(&rsurface.entitytoattenuationxyz, &matrix_attenuationxyz, &rsurface.entitytolight);
3896         Matrix4x4_Concat(&rsurface.entitytoattenuationz, &matrix_attenuationz, &rsurface.entitytolight);
3897         Matrix4x4_Transform(&ent->inversematrix, rsurface.rtlight->shadoworigin, rsurface.entitylightorigin);
3898         if (r_shadow_lightingrendermode == R_SHADOW_RENDERMODE_LIGHT_GLSL)
3899                 R_Mesh_TexMatrix(3, &rsurface.entitytolight);
3900 }
3901
3902 void R_Shadow_DrawWorldLight(int numsurfaces, int *surfacelist, const unsigned char *trispvs)
3903 {
3904         if (!r_refdef.scene.worldmodel->DrawLight)
3905                 return;
3906
3907         // set up properties for rendering light onto this entity
3908         RSurf_ActiveWorldEntity();
3909         GL_AlphaTest(false);
3910         rsurface.entitytolight = rsurface.rtlight->matrix_worldtolight;
3911         Matrix4x4_Concat(&rsurface.entitytoattenuationxyz, &matrix_attenuationxyz, &rsurface.entitytolight);
3912         Matrix4x4_Concat(&rsurface.entitytoattenuationz, &matrix_attenuationz, &rsurface.entitytolight);
3913         VectorCopy(rsurface.rtlight->shadoworigin, rsurface.entitylightorigin);
3914         if (r_shadow_lightingrendermode == R_SHADOW_RENDERMODE_LIGHT_GLSL)
3915                 R_Mesh_TexMatrix(3, &rsurface.entitytolight);
3916
3917         r_refdef.scene.worldmodel->DrawLight(r_refdef.scene.worldentity, numsurfaces, surfacelist, trispvs);
3918
3919         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3920 }
3921
3922 void R_Shadow_DrawEntityLight(entity_render_t *ent)
3923 {
3924         dp_model_t *model = ent->model;
3925         if (!model->DrawLight)
3926                 return;
3927
3928         R_Shadow_SetupEntityLight(ent);
3929
3930         model->DrawLight(ent, model->nummodelsurfaces, model->sortedmodelsurfaces, NULL);
3931
3932         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3933 }
3934
3935 void R_DrawRTLight(rtlight_t *rtlight, qboolean visible)
3936 {
3937         int i;
3938         float f;
3939         int numleafs, numsurfaces;
3940         int *leaflist, *surfacelist;
3941         unsigned char *leafpvs, *shadowtrispvs, *lighttrispvs, *surfacesides;
3942         int numlightentities;
3943         int numlightentities_noselfshadow;
3944         int numshadowentities;
3945         int numshadowentities_noselfshadow;
3946         static entity_render_t *lightentities[MAX_EDICTS];
3947         static entity_render_t *shadowentities[MAX_EDICTS];
3948         static unsigned char entitysides[MAX_EDICTS];
3949         int lightentities_noselfshadow;
3950         int shadowentities_noselfshadow;
3951         vec3_t nearestpoint;
3952         vec_t distance;
3953         qboolean castshadows;
3954         int lodlinear;
3955
3956         // skip lights that don't light because of ambientscale+diffusescale+specularscale being 0 (corona only lights)
3957         // skip lights that are basically invisible (color 0 0 0)
3958         if (VectorLength2(rtlight->color) * (rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale) < (1.0f / 1048576.0f))
3959                 return;
3960
3961         // loading is done before visibility checks because loading should happen
3962         // all at once at the start of a level, not when it stalls gameplay.
3963         // (especially important to benchmarks)
3964         // compile light
3965         if (rtlight->isstatic && (!rtlight->compiled || (rtlight->shadow && rtlight->shadowmode != (int)r_shadow_shadowmode)) && r_shadow_realtime_world_compile.integer)
3966         {
3967                 if (rtlight->compiled)
3968                         R_RTLight_Uncompile(rtlight);
3969                 R_RTLight_Compile(rtlight);
3970         }
3971
3972         // load cubemap
3973         rtlight->currentcubemap = rtlight->cubemapname[0] ? R_Shadow_Cubemap(rtlight->cubemapname) : r_texture_whitecube;
3974
3975         // look up the light style value at this time
3976         f = (rtlight->style >= 0 ? r_refdef.scene.rtlightstylevalue[rtlight->style] : 1) * r_shadow_lightintensityscale.value;
3977         VectorScale(rtlight->color, f, rtlight->currentcolor);
3978         /*
3979         if (rtlight->selected)
3980         {
3981                 f = 2 + sin(realtime * M_PI * 4.0);
3982                 VectorScale(rtlight->currentcolor, f, rtlight->currentcolor);
3983         }
3984         */
3985
3986         // if lightstyle is currently off, don't draw the light
3987         if (VectorLength2(rtlight->currentcolor) < (1.0f / 1048576.0f))
3988                 return;
3989
3990         // if the light box is offscreen, skip it
3991         if (R_CullBox(rtlight->cullmins, rtlight->cullmaxs))
3992                 return;
3993
3994         VectorCopy(rtlight->cullmins, rsurface.rtlight_cullmins);
3995         VectorCopy(rtlight->cullmaxs, rsurface.rtlight_cullmaxs);
3996
3997         if (rtlight->compiled && r_shadow_realtime_world_compile.integer)
3998         {
3999                 // compiled light, world available and can receive realtime lighting
4000                 // retrieve leaf information
4001                 numleafs = rtlight->static_numleafs;
4002                 leaflist = rtlight->static_leaflist;
4003                 leafpvs = rtlight->static_leafpvs;
4004                 numsurfaces = rtlight->static_numsurfaces;
4005                 surfacelist = rtlight->static_surfacelist;
4006                 surfacesides = NULL;
4007                 shadowtrispvs = rtlight->static_shadowtrispvs;
4008                 lighttrispvs = rtlight->static_lighttrispvs;
4009         }
4010         else if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->GetLightInfo)
4011         {
4012                 // dynamic light, world available and can receive realtime lighting
4013                 // calculate lit surfaces and leafs
4014                 R_Shadow_EnlargeLeafSurfaceTrisBuffer(r_refdef.scene.worldmodel->brush.num_leafs, r_refdef.scene.worldmodel->num_surfaces, r_refdef.scene.worldmodel->brush.shadowmesh ? r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles : r_refdef.scene.worldmodel->surfmesh.num_triangles, r_refdef.scene.worldmodel->surfmesh.num_triangles);
4015                 r_refdef.scene.worldmodel->GetLightInfo(r_refdef.scene.worldentity, rtlight->shadoworigin, rtlight->radius, rsurface.rtlight_cullmins, rsurface.rtlight_cullmaxs, r_shadow_buffer_leaflist, r_shadow_buffer_leafpvs, &numleafs, r_shadow_buffer_surfacelist, r_shadow_buffer_surfacepvs, &numsurfaces, r_shadow_buffer_shadowtrispvs, r_shadow_buffer_lighttrispvs, r_shadow_buffer_visitingleafpvs);
4016                 leaflist = r_shadow_buffer_leaflist;
4017                 leafpvs = r_shadow_buffer_leafpvs;
4018                 surfacelist = r_shadow_buffer_surfacelist;
4019                 surfacesides = r_shadow_buffer_surfacesides;
4020                 shadowtrispvs = r_shadow_buffer_shadowtrispvs;
4021                 lighttrispvs = r_shadow_buffer_lighttrispvs;
4022                 // if the reduced leaf bounds are offscreen, skip it
4023                 if (R_CullBox(rsurface.rtlight_cullmins, rsurface.rtlight_cullmaxs))
4024                         return;
4025         }
4026         else
4027         {
4028                 // no world
4029                 numleafs = 0;
4030                 leaflist = NULL;
4031                 leafpvs = NULL;
4032                 numsurfaces = 0;
4033                 surfacelist = NULL;
4034                 surfacesides = NULL;
4035                 shadowtrispvs = NULL;
4036                 lighttrispvs = NULL;
4037         }
4038         // check if light is illuminating any visible leafs
4039         if (numleafs)
4040         {
4041                 for (i = 0;i < numleafs;i++)
4042                         if (r_refdef.viewcache.world_leafvisible[leaflist[i]])
4043                                 break;
4044                 if (i == numleafs)
4045                         return;
4046         }
4047         // set up a scissor rectangle for this light
4048         if (R_Shadow_ScissorForBBox(rsurface.rtlight_cullmins, rsurface.rtlight_cullmaxs))
4049                 return;
4050
4051         R_Shadow_ComputeShadowCasterCullingPlanes(rtlight);
4052
4053         // make a list of lit entities and shadow casting entities
4054         numlightentities = 0;
4055         numlightentities_noselfshadow = 0;
4056         lightentities_noselfshadow = sizeof(lightentities)/sizeof(lightentities[0]) - 1;
4057         numshadowentities = 0;
4058         numshadowentities_noselfshadow = 0;
4059         shadowentities_noselfshadow = sizeof(shadowentities)/sizeof(shadowentities[0]) - 1;
4060
4061         // add dynamic entities that are lit by the light
4062         if (r_drawentities.integer)
4063         {
4064                 for (i = 0;i < r_refdef.scene.numentities;i++)
4065                 {
4066                         dp_model_t *model;
4067                         entity_render_t *ent = r_refdef.scene.entities[i];
4068                         vec3_t org;
4069                         if (!BoxesOverlap(ent->mins, ent->maxs, rsurface.rtlight_cullmins, rsurface.rtlight_cullmaxs))
4070                                 continue;
4071                         // skip the object entirely if it is not within the valid
4072                         // shadow-casting region (which includes the lit region)
4073                         if (R_CullBoxCustomPlanes(ent->mins, ent->maxs, rsurface.rtlight_numfrustumplanes, rsurface.rtlight_frustumplanes))
4074                                 continue;
4075                         if (!(model = ent->model))
4076                                 continue;
4077                         if (r_refdef.viewcache.entityvisible[i] && model->DrawLight && (ent->flags & RENDER_LIGHT))
4078                         {
4079                                 // this entity wants to receive light, is visible, and is
4080                                 // inside the light box
4081                                 // TODO: check if the surfaces in the model can receive light
4082                                 // so now check if it's in a leaf seen by the light
4083                                 if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->brush.BoxTouchingLeafPVS && !r_refdef.scene.worldmodel->brush.BoxTouchingLeafPVS(r_refdef.scene.worldmodel, leafpvs, ent->mins, ent->maxs))
4084                                         continue;
4085                                 if (ent->flags & RENDER_NOSELFSHADOW)
4086                                         lightentities[lightentities_noselfshadow - numlightentities_noselfshadow++] = ent;
4087                                 else
4088                                         lightentities[numlightentities++] = ent;
4089                                 // since it is lit, it probably also casts a shadow...
4090                                 // about the VectorDistance2 - light emitting entities should not cast their own shadow
4091                                 Matrix4x4_OriginFromMatrix(&ent->matrix, org);
4092                                 if ((ent->flags & RENDER_SHADOW) && model->DrawShadowVolume && VectorDistance2(org, rtlight->shadoworigin) > 0.1)
4093                                 {
4094                                         // note: exterior models without the RENDER_NOSELFSHADOW
4095                                         // flag still create a RENDER_NOSELFSHADOW shadow but
4096                                         // are lit normally, this means that they are
4097                                         // self-shadowing but do not shadow other
4098                                         // RENDER_NOSELFSHADOW entities such as the gun
4099                                         // (very weird, but keeps the player shadow off the gun)
4100                                         if (ent->flags & (RENDER_NOSELFSHADOW | RENDER_EXTERIORMODEL))
4101                                                 shadowentities[shadowentities_noselfshadow - numshadowentities_noselfshadow++] = ent;
4102                                         else
4103                                                 shadowentities[numshadowentities++] = ent;
4104                                 }
4105                         }
4106                         else if (ent->flags & RENDER_SHADOW)
4107                         {
4108                                 // this entity is not receiving light, but may still need to
4109                                 // cast a shadow...
4110                                 // TODO: check if the surfaces in the model can cast shadow
4111                                 // now check if it is in a leaf seen by the light
4112                                 if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->brush.BoxTouchingLeafPVS && !r_refdef.scene.worldmodel->brush.BoxTouchingLeafPVS(r_refdef.scene.worldmodel, leafpvs, ent->mins, ent->maxs))
4113                                         continue;
4114                                 // about the VectorDistance2 - light emitting entities should not cast their own shadow
4115                                 Matrix4x4_OriginFromMatrix(&ent->matrix, org);
4116                                 if ((ent->flags & RENDER_SHADOW) && model->DrawShadowVolume && VectorDistance2(org, rtlight->shadoworigin) > 0.1)
4117                                 {
4118                                         if (ent->flags & (RENDER_NOSELFSHADOW | RENDER_EXTERIORMODEL))
4119                                                 shadowentities[shadowentities_noselfshadow - numshadowentities_noselfshadow++] = ent;
4120                                         else
4121                                                 shadowentities[numshadowentities++] = ent;
4122                                 }
4123                         }
4124                 }
4125         }
4126
4127         // return if there's nothing at all to light
4128         if (!numlightentities && !numsurfaces)
4129                 return;
4130
4131         // don't let sound skip if going slow
4132         if (r_refdef.scene.extraupdate)
4133                 S_ExtraUpdate ();
4134
4135         // make this the active rtlight for rendering purposes
4136         R_Shadow_RenderMode_ActiveLight(rtlight);
4137         // count this light in the r_speeds
4138         r_refdef.stats.lights++;
4139
4140         if (r_showshadowvolumes.integer && r_refdef.view.showdebug && numsurfaces + numshadowentities + numshadowentities_noselfshadow && rtlight->shadow && (rtlight->isstatic ? r_refdef.scene.rtworldshadows : r_refdef.scene.rtdlightshadows))
4141         {
4142                 // optionally draw visible shape of the shadow volumes
4143                 // for performance analysis by level designers
4144                 R_Shadow_RenderMode_VisibleShadowVolumes();
4145                 if (numsurfaces)
4146                         R_Shadow_DrawWorldShadow_ShadowVolume(numsurfaces, surfacelist, shadowtrispvs);
4147                 for (i = 0;i < numshadowentities;i++)
4148                         R_Shadow_DrawEntityShadow(shadowentities[i]);
4149                 for (i = 0;i < numshadowentities_noselfshadow;i++)
4150                         R_Shadow_DrawEntityShadow(shadowentities[shadowentities_noselfshadow - i]);
4151         }
4152
4153         if (r_showlighting.integer && r_refdef.view.showdebug && numsurfaces + numlightentities + numlightentities_noselfshadow)
4154         {
4155                 // optionally draw the illuminated areas
4156                 // for performance analysis by level designers
4157                 R_Shadow_RenderMode_VisibleLighting(false, false);
4158                 if (numsurfaces)
4159                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
4160                 for (i = 0;i < numlightentities;i++)
4161                         R_Shadow_DrawEntityLight(lightentities[i]);
4162                 for (i = 0;i < numlightentities_noselfshadow;i++)
4163                         R_Shadow_DrawEntityLight(lightentities[lightentities_noselfshadow - i]);
4164         }
4165
4166         castshadows = numsurfaces + numshadowentities + numshadowentities_noselfshadow > 0 && rtlight->shadow && (rtlight->isstatic ? r_refdef.scene.rtworldshadows : r_refdef.scene.rtdlightshadows);
4167
4168         nearestpoint[0] = bound(rtlight->cullmins[0], r_refdef.view.origin[0], rtlight->cullmaxs[0]);
4169         nearestpoint[1] = bound(rtlight->cullmins[1], r_refdef.view.origin[1], rtlight->cullmaxs[1]);
4170         nearestpoint[2] = bound(rtlight->cullmins[2], r_refdef.view.origin[2], rtlight->cullmaxs[2]);
4171         distance = VectorDistance(nearestpoint, r_refdef.view.origin);
4172
4173         lodlinear = (rtlight->radius * r_shadow_shadowmapping_precision.value) / sqrt(max(1.0f, distance/rtlight->radius));
4174         //lodlinear = (int)(r_shadow_shadowmapping_lod_bias.value + r_shadow_shadowmapping_lod_scale.value * rtlight->radius / max(1.0f, distance));
4175         lodlinear = bound(r_shadow_shadowmapping_minsize.integer, lodlinear, r_shadow_shadowmapmaxsize);
4176
4177         if (castshadows && (r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAP2D || r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAPRECTANGLE || r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAPCUBESIDE))
4178         {
4179                 float borderbias;
4180                 int side;
4181                 int size;
4182                 int castermask = 0;
4183                 int receivermask = 0;
4184                 matrix4x4_t radiustolight = rtlight->matrix_worldtolight;
4185                 Matrix4x4_Abs(&radiustolight);
4186
4187                 r_shadow_shadowmaplod = 0;
4188                 for (i = 1;i < R_SHADOW_SHADOWMAP_NUMCUBEMAPS;i++)
4189                         if ((r_shadow_shadowmapmaxsize >> i) > lodlinear)
4190                                 r_shadow_shadowmaplod = i;
4191
4192                 size = r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAPCUBESIDE ? r_shadow_shadowmapmaxsize >> r_shadow_shadowmaplod : lodlinear;
4193                 size = bound(1, size, r_shadow_shadowmapmaxsize);
4194                 borderbias = r_shadow_shadowmapborder / (float)(size - r_shadow_shadowmapborder);
4195
4196                 if (numsurfaces)
4197                 {
4198                         if (rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
4199                         {
4200                                 castermask = rtlight->static_shadowmap_casters;
4201                                 receivermask = rtlight->static_shadowmap_receivers;
4202                         }
4203                         else
4204                         {
4205                                 for(i = 0;i < numsurfaces;i++)
4206                                 {
4207                                         msurface_t *surface = r_refdef.scene.worldmodel->data_surfaces + surfacelist[i];
4208                                         surfacesides[i] = R_Shadow_CalcBBoxSideMask(surface->mins, surface->maxs, &rtlight->matrix_worldtolight, &radiustolight, borderbias);
4209                                         castermask |= surfacesides[i];
4210                                         receivermask |= surfacesides[i];
4211                                 }
4212                         }
4213                 }
4214                 if (receivermask < 0x3F)
4215                 {
4216                         for (i = 0;i < numlightentities;i++)
4217                                 receivermask |= R_Shadow_CalcEntitySideMask(lightentities[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias);
4218                         if (receivermask < 0x3F)
4219                                 for(i = 0; i < numlightentities_noselfshadow;i++)
4220                                         receivermask |= R_Shadow_CalcEntitySideMask(lightentities[lightentities_noselfshadow - i], &rtlight->matrix_worldtolight, &radiustolight, borderbias);
4221                 }
4222
4223                 receivermask &= R_Shadow_CullFrustumSides(rtlight, size, r_shadow_shadowmapborder);
4224
4225                 if (receivermask)
4226                 {
4227                         for (i = 0;i < numshadowentities;i++)
4228                                 castermask |= (entitysides[i] = R_Shadow_CalcEntitySideMask(shadowentities[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias));
4229                         for (i = 0;i < numshadowentities_noselfshadow;i++)
4230                                 castermask |= (entitysides[shadowentities_noselfshadow - i] = R_Shadow_CalcEntitySideMask(shadowentities[shadowentities_noselfshadow - i], &rtlight->matrix_worldtolight, &radiustolight, borderbias));
4231                 }
4232
4233                 //Con_Printf("distance %f lodlinear %i (lod %i) size %i\n", distance, lodlinear, r_shadow_shadowmaplod, size);
4234
4235                 // render shadow casters into 6 sided depth texture
4236                 for (side = 0;side < 6;side++) if (receivermask & (1 << side))
4237                 {
4238                         R_Shadow_RenderMode_ShadowMap(side, true, size);
4239                         if (! (castermask & (1 << side))) continue;
4240                         if (numsurfaces)
4241                                 R_Shadow_DrawWorldShadow_ShadowMap(numsurfaces, surfacelist, shadowtrispvs, surfacesides);
4242                         for (i = 0;i < numshadowentities;i++) if (entitysides[i] & (1 << side))
4243                                 R_Shadow_DrawEntityShadow(shadowentities[i]);
4244                 }
4245
4246                 if (numlightentities_noselfshadow)
4247                 {
4248                         // render lighting using the depth texture as shadowmap
4249                         // draw lighting in the unmasked areas
4250                         R_Shadow_RenderMode_Lighting(false, false, true);
4251                         for (i = 0;i < numlightentities_noselfshadow;i++)
4252                                 R_Shadow_DrawEntityLight(lightentities[lightentities_noselfshadow - i]);
4253                 }
4254
4255                 // render shadow casters into 6 sided depth texture
4256                 if (numshadowentities_noselfshadow)
4257                 {
4258                         for (side = 0;side < 6;side++) if ((receivermask & castermask) & (1 << side))
4259                         {
4260                                 R_Shadow_RenderMode_ShadowMap(side, false, size);
4261                                 for (i = 0;i < numshadowentities_noselfshadow;i++) if (entitysides[shadowentities_noselfshadow - i] & (1 << side))
4262                                         R_Shadow_DrawEntityShadow(shadowentities[shadowentities_noselfshadow - i]);
4263                         }
4264                 }
4265
4266                 // render lighting using the depth texture as shadowmap
4267                 // draw lighting in the unmasked areas
4268                 R_Shadow_RenderMode_Lighting(false, false, true);
4269                 // draw lighting in the unmasked areas
4270                 if (numsurfaces)
4271                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
4272                 for (i = 0;i < numlightentities;i++)
4273                         R_Shadow_DrawEntityLight(lightentities[i]);
4274         }
4275         else if (castshadows && gl_stencil)
4276         {
4277                 // draw stencil shadow volumes to mask off pixels that are in shadow
4278                 // so that they won't receive lighting
4279                 GL_Scissor(r_shadow_lightscissor[0], r_shadow_lightscissor[1], r_shadow_lightscissor[2], r_shadow_lightscissor[3]);
4280                 R_Shadow_ClearStencil();
4281                 if (numsurfaces)
4282                         R_Shadow_DrawWorldShadow_ShadowVolume(numsurfaces, surfacelist, shadowtrispvs);
4283                 for (i = 0;i < numshadowentities;i++)
4284                         R_Shadow_DrawEntityShadow(shadowentities[i]);
4285                 if (numlightentities_noselfshadow)
4286                 {
4287                         // draw lighting in the unmasked areas
4288                         R_Shadow_RenderMode_Lighting(true, false, false);
4289                         for (i = 0;i < numlightentities_noselfshadow;i++)
4290                                 R_Shadow_DrawEntityLight(lightentities[lightentities_noselfshadow - i]);
4291
4292                         // optionally draw the illuminated areas
4293                         // for performance analysis by level designers
4294                         if (r_showlighting.integer && r_refdef.view.showdebug)
4295                         {
4296                                 R_Shadow_RenderMode_VisibleLighting(!r_showdisabledepthtest.integer, false);
4297                                 for (i = 0;i < numlightentities_noselfshadow;i++)
4298                                         R_Shadow_DrawEntityLight(lightentities[lightentities_noselfshadow - i]);
4299                         }
4300                 }
4301                 for (i = 0;i < numshadowentities_noselfshadow;i++)
4302                         R_Shadow_DrawEntityShadow(shadowentities[shadowentities_noselfshadow - i]);
4303
4304                 if (numsurfaces + numlightentities)
4305                 {
4306                         // draw lighting in the unmasked areas
4307                         R_Shadow_RenderMode_Lighting(true, false, false);
4308                         if (numsurfaces)
4309                                 R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
4310                         for (i = 0;i < numlightentities;i++)
4311                                 R_Shadow_DrawEntityLight(lightentities[i]);
4312                 }
4313         }
4314         else
4315         {
4316                 if (numsurfaces + numlightentities)
4317                 {
4318                         // draw lighting in the unmasked areas
4319                         R_Shadow_RenderMode_Lighting(false, false, false);
4320                         if (numsurfaces)
4321                                 R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
4322                         for (i = 0;i < numlightentities;i++)
4323                                 R_Shadow_DrawEntityLight(lightentities[i]);
4324                         for (i = 0;i < numlightentities_noselfshadow;i++)
4325                                 R_Shadow_DrawEntityLight(lightentities[lightentities_noselfshadow - i]);
4326                 }
4327         }
4328 }
4329
4330 void R_Shadow_DrawLightSprites(void);
4331 void R_ShadowVolumeLighting(qboolean visible)
4332 {
4333         int flag;
4334         int lnum;
4335         size_t lightindex;
4336         dlight_t *light;
4337         size_t range;
4338
4339         if (r_shadow_shadowmapmaxsize != bound(1, r_shadow_shadowmapping_maxsize.integer, gl_max_size.integer / 4) ||
4340                 (r_shadow_shadowmode != R_SHADOW_SHADOWMODE_STENCIL) != (r_shadow_shadowmapping.integer && r_glsl.integer && gl_support_fragment_shader && gl_support_ext_framebuffer_object) ||
4341                 r_shadow_shadowmapvsdct != (r_shadow_shadowmapping_vsdct.integer != 0) ||
4342                 r_shadow_shadowmaptexturetype != r_shadow_shadowmapping_texturetype.integer ||
4343                 r_shadow_shadowmapfilterquality != r_shadow_shadowmapping_filterquality.integer ||
4344                 r_shadow_shadowmapdepthbits != r_shadow_shadowmapping_depthbits.integer ||
4345                 r_shadow_shadowmapborder != bound(0, r_shadow_shadowmapping_bordersize.integer, 16))
4346                 R_Shadow_FreeShadowMaps();
4347
4348         if (r_editlights.integer)
4349                 R_Shadow_DrawLightSprites();
4350
4351         R_Shadow_RenderMode_Begin();
4352
4353         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
4354         if (r_shadow_debuglight.integer >= 0)
4355         {
4356                 lightindex = r_shadow_debuglight.integer;
4357                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4358                 if (light && (light->flags & flag))
4359                         R_DrawRTLight(&light->rtlight, visible);
4360         }
4361         else
4362         {
4363                 range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4364                 for (lightindex = 0;lightindex < range;lightindex++)
4365                 {
4366                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4367                         if (light && (light->flags & flag))
4368                                 R_DrawRTLight(&light->rtlight, visible);
4369                 }
4370         }
4371         if (r_refdef.scene.rtdlight)
4372                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
4373                         R_DrawRTLight(r_refdef.scene.lights[lnum], visible);
4374
4375         R_Shadow_RenderMode_End();
4376 }
4377
4378 extern const float r_screenvertex3f[12];
4379 extern void R_SetupView(qboolean allowwaterclippingplane);
4380 extern void R_ResetViewRendering3D(void);
4381 extern void R_ResetViewRendering2D(void);
4382 extern cvar_t r_shadows;
4383 extern cvar_t r_shadows_darken;
4384 extern cvar_t r_shadows_drawafterrtlighting;
4385 extern cvar_t r_shadows_castfrombmodels;
4386 extern cvar_t r_shadows_throwdistance;
4387 extern cvar_t r_shadows_throwdirection;
4388 void R_DrawModelShadows(void)
4389 {
4390         int i;
4391         float relativethrowdistance;
4392         entity_render_t *ent;
4393         vec3_t relativelightorigin;
4394         vec3_t relativelightdirection;
4395         vec3_t relativeshadowmins, relativeshadowmaxs;
4396         vec3_t tmp, shadowdir;
4397
4398         if (!r_drawentities.integer || !gl_stencil)
4399                 return;
4400
4401         CHECKGLERROR
4402         R_ResetViewRendering3D();
4403         //GL_Scissor(r_refdef.view.viewport.x, r_refdef.view.viewport.y, r_refdef.view.viewport.width, r_refdef.view.viewport.height);
4404         //GL_Scissor(r_refdef.view.x, vid.height - r_refdef.view.height - r_refdef.view.y, r_refdef.view.width, r_refdef.view.height);
4405         R_Shadow_RenderMode_Begin();
4406         R_Shadow_RenderMode_ActiveLight(NULL);
4407         r_shadow_lightscissor[0] = r_refdef.view.x;
4408         r_shadow_lightscissor[1] = vid.height - r_refdef.view.y - r_refdef.view.height;
4409         r_shadow_lightscissor[2] = r_refdef.view.width;
4410         r_shadow_lightscissor[3] = r_refdef.view.height;
4411         R_Shadow_RenderMode_StencilShadowVolumes(false);
4412
4413         // get shadow dir
4414         if (r_shadows.integer == 2)
4415         {
4416                 Math_atov(r_shadows_throwdirection.string, shadowdir);
4417                 VectorNormalize(shadowdir);
4418         }
4419
4420         R_Shadow_ClearStencil();
4421
4422         for (i = 0;i < r_refdef.scene.numentities;i++)
4423         {
4424                 ent = r_refdef.scene.entities[i];
4425
4426                 // cast shadows from anything of the map (submodels are optional)
4427                 if (ent->model && ent->model->DrawShadowVolume != NULL && (!ent->model->brush.submodel || r_shadows_castfrombmodels.integer) && (ent->flags & RENDER_SHADOW))
4428                 {
4429                         relativethrowdistance = r_shadows_throwdistance.value * Matrix4x4_ScaleFromMatrix(&ent->inversematrix);
4430                         VectorSet(relativeshadowmins, -relativethrowdistance, -relativethrowdistance, -relativethrowdistance);
4431                         VectorSet(relativeshadowmaxs, relativethrowdistance, relativethrowdistance, relativethrowdistance);
4432                         if (r_shadows.integer == 2) // 2: simpler mode, throw shadows always in same direction
4433                                 Matrix4x4_Transform3x3(&ent->inversematrix, shadowdir, relativelightdirection);
4434                         else
4435                         {
4436                                 if(ent->entitynumber != 0)
4437                                 {
4438                                         // networked entity - might be attached in some way (then we should use the parent's light direction, to not tear apart attached entities)
4439                                         int entnum, entnum2, recursion;
4440                                         entnum = entnum2 = ent->entitynumber;
4441                                         for(recursion = 32; recursion > 0; --recursion)
4442                                         {
4443                                                 entnum2 = cl.entities[entnum].state_current.tagentity;
4444                                                 if(entnum2 >= 1 && entnum2 < cl.num_entities && cl.entities_active[entnum2])
4445                                                         entnum = entnum2;
4446                                                 else
4447                                                         break;
4448                                         }
4449                                         if(recursion && recursion != 32) // if we followed a valid non-empty attachment chain
4450                                         {
4451                                                 VectorNegate(cl.entities[entnum].render.modellight_lightdir, relativelightdirection);
4452                                                 // transform into modelspace of OUR entity
4453                                                 Matrix4x4_Transform3x3(&cl.entities[entnum].render.matrix, relativelightdirection, tmp);
4454                                                 Matrix4x4_Transform3x3(&ent->inversematrix, tmp, relativelightdirection);
4455                                         }
4456                                         else
4457                                                 VectorNegate(ent->modellight_lightdir, relativelightdirection);
4458                                 }
4459                                 else
4460                                         VectorNegate(ent->modellight_lightdir, relativelightdirection);
4461                         }
4462
4463                         VectorScale(relativelightdirection, -relativethrowdistance, relativelightorigin);
4464                         RSurf_ActiveModelEntity(ent, false, false);
4465                         ent->model->DrawShadowVolume(ent, relativelightorigin, relativelightdirection, relativethrowdistance, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, relativeshadowmins, relativeshadowmaxs);
4466                         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
4467                 }
4468         }
4469
4470         // not really the right mode, but this will disable any silly stencil features
4471         R_Shadow_RenderMode_End();
4472
4473         // set up ortho view for rendering this pass
4474         //GL_Scissor(r_refdef.view.x, vid.height - r_refdef.view.height - r_refdef.view.y, r_refdef.view.width, r_refdef.view.height);
4475         //GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
4476         //GL_ScissorTest(true);
4477         //R_Mesh_Matrix(&identitymatrix);
4478         //R_Mesh_ResetTextureState();
4479         R_ResetViewRendering2D();
4480         R_Mesh_VertexPointer(r_screenvertex3f, 0, 0);
4481         R_Mesh_ColorPointer(NULL, 0, 0);
4482         R_SetupGenericShader(false);
4483
4484         // set up a darkening blend on shadowed areas
4485         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
4486         //GL_DepthRange(0, 1);
4487         //GL_DepthTest(false);
4488         //GL_DepthMask(false);
4489         //GL_PolygonOffset(0, 0);CHECKGLERROR
4490         GL_Color(0, 0, 0, r_shadows_darken.value);
4491         //GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
4492         //qglDepthFunc(GL_ALWAYS);CHECKGLERROR
4493         qglEnable(GL_STENCIL_TEST);CHECKGLERROR
4494         qglStencilMask(~0);CHECKGLERROR
4495         qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);CHECKGLERROR
4496         qglStencilFunc(GL_NOTEQUAL, 128, ~0);CHECKGLERROR
4497
4498         // apply the blend to the shadowed areas
4499         R_Mesh_Draw(0, 4, 0, 2, NULL, polygonelements, 0, 0);
4500
4501         // restore the viewport
4502         R_SetViewport(&r_refdef.view.viewport);
4503
4504         // restore other state to normal
4505         //R_Shadow_RenderMode_End();
4506 }
4507
4508 void R_BeginCoronaQuery(rtlight_t *rtlight, float scale, qboolean usequery)
4509 {
4510         float zdist;
4511         vec3_t centerorigin;
4512         // if it's too close, skip it
4513         if (VectorLength(rtlight->currentcolor) < (1.0f / 256.0f))
4514                 return;
4515         zdist = (DotProduct(rtlight->shadoworigin, r_refdef.view.forward) - DotProduct(r_refdef.view.origin, r_refdef.view.forward));
4516         if (zdist < 32)
4517                 return;
4518         if (usequery && r_numqueries + 2 <= r_maxqueries)
4519         {
4520                 rtlight->corona_queryindex_allpixels = r_queries[r_numqueries++];
4521                 rtlight->corona_queryindex_visiblepixels = r_queries[r_numqueries++];
4522                 VectorMA(r_refdef.view.origin, zdist, r_refdef.view.forward, centerorigin);
4523
4524                 CHECKGLERROR
4525                 // NOTE: we can't disable depth testing using R_DrawSprite's depthdisable argument, which calls GL_DepthTest, as that's broken in the ATI drivers
4526                 qglBeginQueryARB(GL_SAMPLES_PASSED_ARB, rtlight->corona_queryindex_allpixels);
4527                 qglDepthFunc(GL_ALWAYS);
4528                 R_DrawSprite(GL_ONE, GL_ZERO, r_shadow_lightcorona, NULL, false, false, centerorigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale, 1, 1, 1, 1);
4529                 qglEndQueryARB(GL_SAMPLES_PASSED_ARB);
4530                 qglDepthFunc(GL_LEQUAL);
4531                 qglBeginQueryARB(GL_SAMPLES_PASSED_ARB, rtlight->corona_queryindex_visiblepixels);
4532                 R_DrawSprite(GL_ONE, GL_ZERO, r_shadow_lightcorona, NULL, false, false, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale, 1, 1, 1, 1);
4533                 qglEndQueryARB(GL_SAMPLES_PASSED_ARB);
4534                 CHECKGLERROR
4535         }
4536         rtlight->corona_visibility = bound(0, (zdist - 32) / 32, 1);
4537 }
4538
4539 void R_DrawCorona(rtlight_t *rtlight, float cscale, float scale)
4540 {
4541         vec3_t color;
4542         GLint allpixels = 0, visiblepixels = 0;
4543         // now we have to check the query result
4544         if (rtlight->corona_queryindex_visiblepixels)
4545         {
4546                 CHECKGLERROR
4547                 qglGetQueryObjectivARB(rtlight->corona_queryindex_visiblepixels, GL_QUERY_RESULT_ARB, &visiblepixels);
4548                 qglGetQueryObjectivARB(rtlight->corona_queryindex_allpixels, GL_QUERY_RESULT_ARB, &allpixels);
4549                 CHECKGLERROR
4550                 //Con_Printf("%i of %i pixels\n", (int)visiblepixels, (int)allpixels);
4551                 if (visiblepixels < 1 || allpixels < 1)
4552                         return;
4553                 rtlight->corona_visibility *= bound(0, (float)visiblepixels / (float)allpixels, 1);
4554                 cscale *= rtlight->corona_visibility;
4555         }
4556         else
4557         {
4558                 // FIXME: these traces should scan all render entities instead of cl.world
4559                 if (CL_TraceLine(r_refdef.view.origin, rtlight->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction < 1)
4560                         return;
4561         }
4562         VectorScale(rtlight->currentcolor, cscale, color);
4563         if (VectorLength(color) > (1.0f / 256.0f))
4564                 R_DrawSprite(GL_ONE, GL_ONE, r_shadow_lightcorona, NULL, true, false, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale, color[0], color[1], color[2], 1);
4565 }
4566
4567 void R_DrawCoronas(void)
4568 {
4569         int i, flag;
4570         qboolean usequery;
4571         size_t lightindex;
4572         dlight_t *light;
4573         rtlight_t *rtlight;
4574         size_t range;
4575         if (r_coronas.value < (1.0f / 256.0f) && !gl_flashblend.integer)
4576                 return;
4577         if (r_waterstate.renderingscene)
4578                 return;
4579         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
4580         R_Mesh_Matrix(&identitymatrix);
4581
4582         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4583
4584         // check occlusion of coronas
4585         // use GL_ARB_occlusion_query if available
4586         // otherwise use raytraces
4587         r_numqueries = 0;
4588         usequery = gl_support_arb_occlusion_query && r_coronas_occlusionquery.integer;
4589         if (usequery)
4590         {
4591                 GL_ColorMask(0,0,0,0);
4592                 if (r_maxqueries < (range + r_refdef.scene.numlights) * 2)
4593                 if (r_maxqueries < R_MAX_OCCLUSION_QUERIES)
4594                 {
4595                         i = r_maxqueries;
4596                         r_maxqueries = (range + r_refdef.scene.numlights) * 4;
4597                         r_maxqueries = min(r_maxqueries, R_MAX_OCCLUSION_QUERIES);
4598                         CHECKGLERROR
4599                         qglGenQueriesARB(r_maxqueries - i, r_queries + i);
4600                         CHECKGLERROR
4601                 }
4602         }
4603         for (lightindex = 0;lightindex < range;lightindex++)
4604         {
4605                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4606                 if (!light)
4607                         continue;
4608                 rtlight = &light->rtlight;
4609                 rtlight->corona_visibility = 0;
4610                 rtlight->corona_queryindex_visiblepixels = 0;
4611                 rtlight->corona_queryindex_allpixels = 0;
4612                 if (!(rtlight->flags & flag))
4613                         continue;
4614                 if (rtlight->corona <= 0)
4615                         continue;
4616                 if (r_shadow_debuglight.integer >= 0 && r_shadow_debuglight.integer != (int)lightindex)
4617                         continue;
4618                 R_BeginCoronaQuery(rtlight, rtlight->radius * rtlight->coronasizescale * r_coronas_occlusionsizescale.value, usequery);
4619         }
4620         for (i = 0;i < r_refdef.scene.numlights;i++)
4621         {
4622                 rtlight = r_refdef.scene.lights[i];
4623                 rtlight->corona_visibility = 0;
4624                 rtlight->corona_queryindex_visiblepixels = 0;
4625                 rtlight->corona_queryindex_allpixels = 0;
4626                 if (!(rtlight->flags & flag))
4627                         continue;
4628                 if (rtlight->corona <= 0)
4629                         continue;
4630                 R_BeginCoronaQuery(rtlight, rtlight->radius * rtlight->coronasizescale * r_coronas_occlusionsizescale.value, usequery);
4631         }
4632         if (usequery)
4633                 GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
4634
4635         // now draw the coronas using the query data for intensity info
4636         for (lightindex = 0;lightindex < range;lightindex++)
4637         {
4638                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4639                 if (!light)
4640                         continue;
4641                 rtlight = &light->rtlight;
4642                 if (rtlight->corona_visibility <= 0)
4643                         continue;
4644                 R_DrawCorona(rtlight, rtlight->corona * r_coronas.value * 0.25f, rtlight->radius * rtlight->coronasizescale);
4645         }
4646         for (i = 0;i < r_refdef.scene.numlights;i++)
4647         {
4648                 rtlight = r_refdef.scene.lights[i];
4649                 if (rtlight->corona_visibility <= 0)
4650                         continue;
4651                 if (gl_flashblend.integer)
4652                         R_DrawCorona(rtlight, rtlight->corona, rtlight->radius * rtlight->coronasizescale * 2.0f);
4653                 else
4654                         R_DrawCorona(rtlight, rtlight->corona * r_coronas.value * 0.25f, rtlight->radius * rtlight->coronasizescale);
4655         }
4656 }
4657
4658
4659
4660 //static char *suffix[6] = {"ft", "bk", "rt", "lf", "up", "dn"};
4661 typedef struct suffixinfo_s
4662 {
4663         char *suffix;
4664         qboolean flipx, flipy, flipdiagonal;
4665 }
4666 suffixinfo_t;
4667 static suffixinfo_t suffix[3][6] =
4668 {
4669         {
4670                 {"px",   false, false, false},
4671                 {"nx",   false, false, false},
4672                 {"py",   false, false, false},
4673                 {"ny",   false, false, false},
4674                 {"pz",   false, false, false},
4675                 {"nz",   false, false, false}
4676         },
4677         {
4678                 {"posx", false, false, false},
4679                 {"negx", false, false, false},
4680                 {"posy", false, false, false},
4681                 {"negy", false, false, false},
4682                 {"posz", false, false, false},
4683                 {"negz", false, false, false}
4684         },
4685         {
4686                 {"rt",    true, false,  true},
4687                 {"lf",   false,  true,  true},
4688                 {"ft",    true,  true, false},
4689                 {"bk",   false, false, false},
4690                 {"up",    true, false,  true},
4691                 {"dn",    true, false,  true}
4692         }
4693 };
4694
4695 static int componentorder[4] = {0, 1, 2, 3};
4696
4697 rtexture_t *R_Shadow_LoadCubemap(const char *basename)
4698 {
4699         int i, j, cubemapsize;
4700         unsigned char *cubemappixels, *image_buffer;
4701         rtexture_t *cubemaptexture;
4702         char name[256];
4703         // must start 0 so the first loadimagepixels has no requested width/height
4704         cubemapsize = 0;
4705         cubemappixels = NULL;
4706         cubemaptexture = NULL;
4707         // keep trying different suffix groups (posx, px, rt) until one loads
4708         for (j = 0;j < 3 && !cubemappixels;j++)
4709         {
4710                 // load the 6 images in the suffix group
4711                 for (i = 0;i < 6;i++)
4712                 {
4713                         // generate an image name based on the base and and suffix
4714                         dpsnprintf(name, sizeof(name), "%s%s", basename, suffix[j][i].suffix);
4715                         // load it
4716                         if ((image_buffer = loadimagepixelsbgra(name, false, false)))
4717                         {
4718                                 // an image loaded, make sure width and height are equal
4719                                 if (image_width == image_height && (!cubemappixels || image_width == cubemapsize))
4720                                 {
4721                                         // if this is the first image to load successfully, allocate the cubemap memory
4722                                         if (!cubemappixels && image_width >= 1)
4723                                         {
4724                                                 cubemapsize = image_width;
4725                                                 // note this clears to black, so unavailable sides are black
4726                                                 cubemappixels = (unsigned char *)Mem_Alloc(tempmempool, 6*cubemapsize*cubemapsize*4);
4727                                         }
4728                                         // copy the image with any flipping needed by the suffix (px and posx types don't need flipping)
4729                                         if (cubemappixels)
4730                                                 Image_CopyMux(cubemappixels+i*cubemapsize*cubemapsize*4, image_buffer, cubemapsize, cubemapsize, suffix[j][i].flipx, suffix[j][i].flipy, suffix[j][i].flipdiagonal, 4, 4, componentorder);
4731                                 }
4732                                 else
4733                                         Con_Printf("Cubemap image \"%s\" (%ix%i) is not square, OpenGL requires square cubemaps.\n", name, image_width, image_height);
4734                                 // free the image
4735                                 Mem_Free(image_buffer);
4736                         }
4737                 }
4738         }
4739         // if a cubemap loaded, upload it
4740         if (cubemappixels)
4741         {
4742                 if (developer_loading.integer)
4743                         Con_Printf("loading cubemap \"%s\"\n", basename);
4744
4745                 if (!r_shadow_filters_texturepool)
4746                         r_shadow_filters_texturepool = R_AllocTexturePool();
4747                 cubemaptexture = R_LoadTextureCubeMap(r_shadow_filters_texturepool, basename, cubemapsize, cubemappixels, TEXTYPE_BGRA, TEXF_PRECACHE | (gl_texturecompression_lightcubemaps.integer ? TEXF_COMPRESS : 0) | TEXF_FORCELINEAR, NULL);
4748                 Mem_Free(cubemappixels);
4749         }
4750         else
4751         {
4752                 Con_DPrintf("failed to load cubemap \"%s\"\n", basename);
4753                 if (developer_loading.integer)
4754                 {
4755                         Con_Printf("(tried tried images ");
4756                         for (j = 0;j < 3;j++)
4757                                 for (i = 0;i < 6;i++)
4758                                         Con_Printf("%s\"%s%s.tga\"", j + i > 0 ? ", " : "", basename, suffix[j][i].suffix);
4759                         Con_Print(" and was unable to find any of them).\n");
4760                 }
4761         }
4762         return cubemaptexture;
4763 }
4764
4765 rtexture_t *R_Shadow_Cubemap(const char *basename)
4766 {
4767         int i;
4768         for (i = 0;i < numcubemaps;i++)
4769                 if (!strcasecmp(cubemaps[i].basename, basename))
4770                         return cubemaps[i].texture ? cubemaps[i].texture : r_texture_whitecube;
4771         if (i >= MAX_CUBEMAPS)
4772                 return r_texture_whitecube;
4773         numcubemaps++;
4774         strlcpy(cubemaps[i].basename, basename, sizeof(cubemaps[i].basename));
4775         cubemaps[i].texture = R_Shadow_LoadCubemap(cubemaps[i].basename);
4776         return cubemaps[i].texture;
4777 }
4778
4779 void R_Shadow_FreeCubemaps(void)
4780 {
4781         int i;
4782         for (i = 0;i < numcubemaps;i++)
4783         {
4784                 if (developer_loading.integer)
4785                         Con_Printf("unloading cubemap \"%s\"\n", cubemaps[i].basename);
4786                 if (cubemaps[i].texture)
4787                         R_FreeTexture(cubemaps[i].texture);
4788         }
4789
4790         numcubemaps = 0;
4791         R_FreeTexturePool(&r_shadow_filters_texturepool);
4792 }
4793
4794 dlight_t *R_Shadow_NewWorldLight(void)
4795 {
4796         return (dlight_t *)Mem_ExpandableArray_AllocRecord(&r_shadow_worldlightsarray);
4797 }
4798
4799 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)
4800 {
4801         matrix4x4_t matrix;
4802         // validate parameters
4803         if (style < 0 || style >= MAX_LIGHTSTYLES)
4804         {
4805                 Con_Printf("R_Shadow_NewWorldLight: invalid light style number %i, must be >= 0 and < %i\n", light->style, MAX_LIGHTSTYLES);
4806                 style = 0;
4807         }
4808         if (!cubemapname)
4809                 cubemapname = "";
4810
4811         // copy to light properties
4812         VectorCopy(origin, light->origin);
4813         light->angles[0] = angles[0] - 360 * floor(angles[0] / 360);
4814         light->angles[1] = angles[1] - 360 * floor(angles[1] / 360);
4815         light->angles[2] = angles[2] - 360 * floor(angles[2] / 360);
4816         light->color[0] = max(color[0], 0);
4817         light->color[1] = max(color[1], 0);
4818         light->color[2] = max(color[2], 0);
4819         light->radius = max(radius, 0);
4820         light->style = style;
4821         light->shadow = shadowenable;
4822         light->corona = corona;
4823         strlcpy(light->cubemapname, cubemapname, sizeof(light->cubemapname));
4824         light->coronasizescale = coronasizescale;
4825         light->ambientscale = ambientscale;
4826         light->diffusescale = diffusescale;
4827         light->specularscale = specularscale;
4828         light->flags = flags;
4829
4830         // update renderable light data
4831         Matrix4x4_CreateFromQuakeEntity(&matrix, light->origin[0], light->origin[1], light->origin[2], light->angles[0], light->angles[1], light->angles[2], light->radius);
4832         R_RTLight_Update(&light->rtlight, true, &matrix, light->color, light->style, light->cubemapname[0] ? light->cubemapname : NULL, light->shadow, light->corona, light->coronasizescale, light->ambientscale, light->diffusescale, light->specularscale, light->flags);
4833 }
4834
4835 void R_Shadow_FreeWorldLight(dlight_t *light)
4836 {
4837         if (r_shadow_selectedlight == light)
4838                 r_shadow_selectedlight = NULL;
4839         R_RTLight_Uncompile(&light->rtlight);
4840         Mem_ExpandableArray_FreeRecord(&r_shadow_worldlightsarray, light);
4841 }
4842
4843 void R_Shadow_ClearWorldLights(void)
4844 {
4845         size_t lightindex;
4846         dlight_t *light;
4847         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4848         for (lightindex = 0;lightindex < range;lightindex++)
4849         {
4850                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4851                 if (light)
4852                         R_Shadow_FreeWorldLight(light);
4853         }
4854         r_shadow_selectedlight = NULL;
4855         R_Shadow_FreeCubemaps();
4856 }
4857
4858 void R_Shadow_SelectLight(dlight_t *light)
4859 {
4860         if (r_shadow_selectedlight)
4861                 r_shadow_selectedlight->selected = false;
4862         r_shadow_selectedlight = light;
4863         if (r_shadow_selectedlight)
4864                 r_shadow_selectedlight->selected = true;
4865 }
4866
4867 void R_Shadow_DrawCursor_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
4868 {
4869         // this is never batched (there can be only one)
4870         R_DrawSprite(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, r_editlights_sprcursor->tex, r_editlights_sprcursor->tex, false, false, r_editlights_cursorlocation, r_refdef.view.right, r_refdef.view.up, EDLIGHTSPRSIZE, -EDLIGHTSPRSIZE, -EDLIGHTSPRSIZE, EDLIGHTSPRSIZE, 1, 1, 1, 1);
4871 }
4872
4873 void R_Shadow_DrawLightSprite_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
4874 {
4875         float intensity;
4876         float s;
4877         vec3_t spritecolor;
4878         cachepic_t *pic;
4879
4880         // this is never batched (due to the ent parameter changing every time)
4881         // so numsurfaces == 1 and surfacelist[0] == lightnumber
4882         const dlight_t *light = (dlight_t *)ent;
4883         s = EDLIGHTSPRSIZE;
4884         intensity = 0.5f;
4885         VectorScale(light->color, intensity, spritecolor);
4886         if (VectorLength(spritecolor) < 0.1732f)
4887                 VectorSet(spritecolor, 0.1f, 0.1f, 0.1f);
4888         if (VectorLength(spritecolor) > 1.0f)
4889                 VectorNormalize(spritecolor);
4890
4891         // draw light sprite
4892         if (light->cubemapname[0] && !light->shadow)
4893                 pic = r_editlights_sprcubemapnoshadowlight;
4894         else if (light->cubemapname[0])
4895                 pic = r_editlights_sprcubemaplight;
4896         else if (!light->shadow)
4897                 pic = r_editlights_sprnoshadowlight;
4898         else
4899                 pic = r_editlights_sprlight;
4900         R_DrawSprite(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, pic->tex, pic->tex, false, false, light->origin, r_refdef.view.right, r_refdef.view.up, s, -s, -s, s, spritecolor[0], spritecolor[1], spritecolor[2], 1);
4901         // draw selection sprite if light is selected
4902         if (light->selected)
4903                 R_DrawSprite(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, r_editlights_sprselection->tex, r_editlights_sprselection->tex, false, false, light->origin, r_refdef.view.right, r_refdef.view.up, s, -s, -s, s, 1, 1, 1, 1);
4904         // VorteX todo: add normalmode/realtime mode light overlay sprites?
4905 }
4906
4907 void R_Shadow_DrawLightSprites(void)
4908 {
4909         size_t lightindex;
4910         dlight_t *light;
4911         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4912         for (lightindex = 0;lightindex < range;lightindex++)
4913         {
4914                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4915                 if (light)
4916                         R_MeshQueue_AddTransparent(light->origin, R_Shadow_DrawLightSprite_TransparentCallback, (entity_render_t *)light, 5, &light->rtlight);
4917         }
4918         R_MeshQueue_AddTransparent(r_editlights_cursorlocation, R_Shadow_DrawCursor_TransparentCallback, NULL, 0, NULL);
4919 }
4920
4921 void R_Shadow_SelectLightInView(void)
4922 {
4923         float bestrating, rating, temp[3];
4924         dlight_t *best;
4925         size_t lightindex;
4926         dlight_t *light;
4927         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4928         best = NULL;
4929         bestrating = 0;
4930         for (lightindex = 0;lightindex < range;lightindex++)
4931         {
4932                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4933                 if (!light)
4934                         continue;
4935                 VectorSubtract(light->origin, r_refdef.view.origin, temp);
4936                 rating = (DotProduct(temp, r_refdef.view.forward) / sqrt(DotProduct(temp, temp)));
4937                 if (rating >= 0.95)
4938                 {
4939                         rating /= (1 + 0.0625f * sqrt(DotProduct(temp, temp)));
4940                         if (bestrating < rating && CL_TraceLine(light->origin, r_refdef.view.origin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction == 1.0f)
4941                         {
4942                                 bestrating = rating;
4943                                 best = light;
4944                         }
4945                 }
4946         }
4947         R_Shadow_SelectLight(best);
4948 }
4949
4950 void R_Shadow_LoadWorldLights(void)
4951 {
4952         int n, a, style, shadow, flags;
4953         char tempchar, *lightsstring, *s, *t, name[MAX_QPATH], cubemapname[MAX_QPATH];
4954         float origin[3], radius, color[3], angles[3], corona, coronasizescale, ambientscale, diffusescale, specularscale;
4955         if (cl.worldmodel == NULL)
4956         {
4957                 Con_Print("No map loaded.\n");
4958                 return;
4959         }
4960         FS_StripExtension (cl.worldmodel->name, name, sizeof (name));
4961         strlcat (name, ".rtlights", sizeof (name));
4962         lightsstring = (char *)FS_LoadFile(name, tempmempool, false, NULL);
4963         if (lightsstring)
4964         {
4965                 s = lightsstring;
4966                 n = 0;
4967                 while (*s)
4968                 {
4969                         t = s;
4970                         /*
4971                         shadow = true;
4972                         for (;COM_Parse(t, true) && strcmp(
4973                         if (COM_Parse(t, true))
4974                         {
4975                                 if (com_token[0] == '!')
4976                                 {
4977                                         shadow = false;
4978                                         origin[0] = atof(com_token+1);
4979                                 }
4980                                 else
4981                                         origin[0] = atof(com_token);
4982                                 if (Com_Parse(t
4983                         }
4984                         */
4985                         t = s;
4986                         while (*s && *s != '\n' && *s != '\r')
4987                                 s++;
4988                         if (!*s)
4989                                 break;
4990                         tempchar = *s;
4991                         shadow = true;
4992                         // check for modifier flags
4993                         if (*t == '!')
4994                         {
4995                                 shadow = false;
4996                                 t++;
4997                         }
4998                         *s = 0;
4999 #if _MSC_VER >= 1400
5000 #define sscanf sscanf_s
5001 #endif
5002                         cubemapname[sizeof(cubemapname)-1] = 0;
5003 #if MAX_QPATH != 128
5004 #error update this code if MAX_QPATH changes
5005 #endif
5006                         a = sscanf(t, "%f %f %f %f %f %f %f %d %127s %f %f %f %f %f %f %f %f %i", &origin[0], &origin[1], &origin[2], &radius, &color[0], &color[1], &color[2], &style, cubemapname
5007 #if _MSC_VER >= 1400
5008 , sizeof(cubemapname)
5009 #endif
5010 , &corona, &angles[0], &angles[1], &angles[2], &coronasizescale, &ambientscale, &diffusescale, &specularscale, &flags);
5011                         *s = tempchar;
5012                         if (a < 18)
5013                                 flags = LIGHTFLAG_REALTIMEMODE;
5014                         if (a < 17)
5015                                 specularscale = 1;
5016                         if (a < 16)
5017                                 diffusescale = 1;
5018                         if (a < 15)
5019                                 ambientscale = 0;
5020                         if (a < 14)
5021                                 coronasizescale = 0.25f;
5022                         if (a < 13)
5023                                 VectorClear(angles);
5024                         if (a < 10)
5025                                 corona = 0;
5026                         if (a < 9 || !strcmp(cubemapname, "\"\""))
5027                                 cubemapname[0] = 0;
5028                         // remove quotes on cubemapname
5029                         if (cubemapname[0] == '"' && cubemapname[strlen(cubemapname) - 1] == '"')
5030                         {
5031                                 size_t namelen;
5032                                 namelen = strlen(cubemapname) - 2;
5033                                 memmove(cubemapname, cubemapname + 1, namelen);
5034                                 cubemapname[namelen] = '\0';
5035                         }
5036                         if (a < 8)
5037                         {
5038                                 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);
5039                                 break;
5040                         }
5041                         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, angles, color, radius, corona, style, shadow, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
5042                         if (*s == '\r')
5043                                 s++;
5044                         if (*s == '\n')
5045                                 s++;
5046                         n++;
5047                 }
5048                 if (*s)
5049                         Con_Printf("invalid rtlights file \"%s\"\n", name);
5050                 Mem_Free(lightsstring);
5051         }
5052 }
5053
5054 void R_Shadow_SaveWorldLights(void)
5055 {
5056         size_t lightindex;
5057         dlight_t *light;
5058         size_t bufchars, bufmaxchars;
5059         char *buf, *oldbuf;
5060         char name[MAX_QPATH];
5061         char line[MAX_INPUTLINE];
5062         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked, assuming the dpsnprintf mess doesn't screw it up...
5063         // I hate lines which are 3 times my screen size :( --blub
5064         if (!range)
5065                 return;
5066         if (cl.worldmodel == NULL)
5067         {
5068                 Con_Print("No map loaded.\n");
5069                 return;
5070         }
5071         FS_StripExtension (cl.worldmodel->name, name, sizeof (name));
5072         strlcat (name, ".rtlights", sizeof (name));
5073         bufchars = bufmaxchars = 0;
5074         buf = NULL;
5075         for (lightindex = 0;lightindex < range;lightindex++)
5076         {
5077                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5078                 if (!light)
5079                         continue;
5080                 if (light->coronasizescale != 0.25f || light->ambientscale != 0 || light->diffusescale != 1 || light->specularscale != 1 || light->flags != LIGHTFLAG_REALTIMEMODE)
5081                         dpsnprintf(line, sizeof(line), "%s%f %f %f %f %f %f %f %d \"%s\" %f %f %f %f %f %f %f %f %i\n", light->shadow ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->radius, light->color[0], light->color[1], light->color[2], light->style, light->cubemapname, light->corona, light->angles[0], light->angles[1], light->angles[2], light->coronasizescale, light->ambientscale, light->diffusescale, light->specularscale, light->flags);
5082                 else if (light->cubemapname[0] || light->corona || light->angles[0] || light->angles[1] || light->angles[2])
5083                         dpsnprintf(line, sizeof(line), "%s%f %f %f %f %f %f %f %d \"%s\" %f %f %f %f\n", light->shadow ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->radius, light->color[0], light->color[1], light->color[2], light->style, light->cubemapname, light->corona, light->angles[0], light->angles[1], light->angles[2]);
5084                 else
5085                         dpsnprintf(line, sizeof(line), "%s%f %f %f %f %f %f %f %d\n", light->shadow ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->radius, light->color[0], light->color[1], light->color[2], light->style);
5086                 if (bufchars + strlen(line) > bufmaxchars)
5087                 {
5088                         bufmaxchars = bufchars + strlen(line) + 2048;
5089                         oldbuf = buf;
5090                         buf = (char *)Mem_Alloc(tempmempool, bufmaxchars);
5091                         if (oldbuf)
5092                         {
5093                                 if (bufchars)
5094                                         memcpy(buf, oldbuf, bufchars);
5095                                 Mem_Free(oldbuf);
5096                         }
5097                 }
5098                 if (strlen(line))
5099                 {
5100                         memcpy(buf + bufchars, line, strlen(line));
5101                         bufchars += strlen(line);
5102                 }
5103         }
5104         if (bufchars)
5105                 FS_WriteFile(name, buf, (fs_offset_t)bufchars);
5106         if (buf)
5107                 Mem_Free(buf);
5108 }
5109
5110 void R_Shadow_LoadLightsFile(void)
5111 {
5112         int n, a, style;
5113         char tempchar, *lightsstring, *s, *t, name[MAX_QPATH];
5114         float origin[3], radius, color[3], subtract, spotdir[3], spotcone, falloff, distbias;
5115         if (cl.worldmodel == NULL)
5116         {
5117                 Con_Print("No map loaded.\n");
5118                 return;
5119         }
5120         FS_StripExtension (cl.worldmodel->name, name, sizeof (name));
5121         strlcat (name, ".lights", sizeof (name));
5122         lightsstring = (char *)FS_LoadFile(name, tempmempool, false, NULL);
5123         if (lightsstring)
5124         {
5125                 s = lightsstring;
5126                 n = 0;
5127                 while (*s)
5128                 {
5129                         t = s;
5130                         while (*s && *s != '\n' && *s != '\r')
5131                                 s++;
5132                         if (!*s)
5133                                 break;
5134                         tempchar = *s;
5135                         *s = 0;
5136                         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);
5137                         *s = tempchar;
5138                         if (a < 14)
5139                         {
5140                                 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);
5141                                 break;
5142                         }
5143                         radius = sqrt(DotProduct(color, color) / (falloff * falloff * 8192.0f * 8192.0f));
5144                         radius = bound(15, radius, 4096);
5145                         VectorScale(color, (2.0f / (8388608.0f)), color);
5146                         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, vec3_origin, color, radius, 0, style, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
5147                         if (*s == '\r')
5148                                 s++;
5149                         if (*s == '\n')
5150                                 s++;
5151                         n++;
5152                 }
5153                 if (*s)
5154                         Con_Printf("invalid lights file \"%s\"\n", name);
5155                 Mem_Free(lightsstring);
5156         }
5157 }
5158
5159 // tyrlite/hmap2 light types in the delay field
5160 typedef enum lighttype_e {LIGHTTYPE_MINUSX, LIGHTTYPE_RECIPX, LIGHTTYPE_RECIPXX, LIGHTTYPE_NONE, LIGHTTYPE_SUN, LIGHTTYPE_MINUSXX} lighttype_t;
5161
5162 void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void)
5163 {
5164         int entnum, style, islight, skin, pflags, effects, type, n;
5165         char *entfiledata;
5166         const char *data;
5167         float origin[3], angles[3], radius, color[3], light[4], fadescale, lightscale, originhack[3], overridecolor[3], vec[4];
5168         char key[256], value[MAX_INPUTLINE];
5169
5170         if (cl.worldmodel == NULL)
5171         {
5172                 Con_Print("No map loaded.\n");
5173                 return;
5174         }
5175         // try to load a .ent file first
5176         FS_StripExtension (cl.worldmodel->name, key, sizeof (key));
5177         strlcat (key, ".ent", sizeof (key));
5178         data = entfiledata = (char *)FS_LoadFile(key, tempmempool, true, NULL);
5179         // and if that is not found, fall back to the bsp file entity string
5180         if (!data)
5181                 data = cl.worldmodel->brush.entities;
5182         if (!data)
5183                 return;
5184         for (entnum = 0;COM_ParseToken_Simple(&data, false, false) && com_token[0] == '{';entnum++)
5185         {
5186                 type = LIGHTTYPE_MINUSX;
5187                 origin[0] = origin[1] = origin[2] = 0;
5188                 originhack[0] = originhack[1] = originhack[2] = 0;
5189                 angles[0] = angles[1] = angles[2] = 0;
5190                 color[0] = color[1] = color[2] = 1;
5191                 light[0] = light[1] = light[2] = 1;light[3] = 300;
5192                 overridecolor[0] = overridecolor[1] = overridecolor[2] = 1;
5193                 fadescale = 1;
5194                 lightscale = 1;
5195                 style = 0;
5196                 skin = 0;
5197                 pflags = 0;
5198                 effects = 0;
5199                 islight = false;
5200                 while (1)
5201                 {
5202                         if (!COM_ParseToken_Simple(&data, false, false))
5203                                 break; // error
5204                         if (com_token[0] == '}')
5205                                 break; // end of entity
5206                         if (com_token[0] == '_')
5207                                 strlcpy(key, com_token + 1, sizeof(key));
5208                         else
5209                                 strlcpy(key, com_token, sizeof(key));
5210                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
5211                                 key[strlen(key)-1] = 0;
5212                         if (!COM_ParseToken_Simple(&data, false, false))
5213                                 break; // error
5214                         strlcpy(value, com_token, sizeof(value));
5215
5216                         // now that we have the key pair worked out...
5217                         if (!strcmp("light", key))
5218                         {
5219                                 n = sscanf(value, "%f %f %f %f", &vec[0], &vec[1], &vec[2], &vec[3]);
5220                                 if (n == 1)
5221                                 {
5222                                         // quake
5223                                         light[0] = vec[0] * (1.0f / 256.0f);
5224                                         light[1] = vec[0] * (1.0f / 256.0f);
5225                                         light[2] = vec[0] * (1.0f / 256.0f);
5226                                         light[3] = vec[0];
5227                                 }
5228                                 else if (n == 4)
5229                                 {
5230                                         // halflife
5231                                         light[0] = vec[0] * (1.0f / 255.0f);
5232                                         light[1] = vec[1] * (1.0f / 255.0f);
5233                                         light[2] = vec[2] * (1.0f / 255.0f);
5234                                         light[3] = vec[3];
5235                                 }
5236                         }
5237                         else if (!strcmp("delay", key))
5238                                 type = atoi(value);
5239                         else if (!strcmp("origin", key))
5240                                 sscanf(value, "%f %f %f", &origin[0], &origin[1], &origin[2]);
5241                         else if (!strcmp("angle", key))
5242                                 angles[0] = 0, angles[1] = atof(value), angles[2] = 0;
5243                         else if (!strcmp("angles", key))
5244                                 sscanf(value, "%f %f %f", &angles[0], &angles[1], &angles[2]);
5245                         else if (!strcmp("color", key))
5246                                 sscanf(value, "%f %f %f", &color[0], &color[1], &color[2]);
5247                         else if (!strcmp("wait", key))
5248                                 fadescale = atof(value);
5249                         else if (!strcmp("classname", key))
5250                         {
5251                                 if (!strncmp(value, "light", 5))
5252                                 {
5253                                         islight = true;
5254                                         if (!strcmp(value, "light_fluoro"))
5255                                         {
5256                                                 originhack[0] = 0;
5257                                                 originhack[1] = 0;
5258                                                 originhack[2] = 0;
5259                                                 overridecolor[0] = 1;
5260                                                 overridecolor[1] = 1;
5261                                                 overridecolor[2] = 1;
5262                                         }
5263                                         if (!strcmp(value, "light_fluorospark"))
5264                                         {
5265                                                 originhack[0] = 0;
5266                                                 originhack[1] = 0;
5267                                                 originhack[2] = 0;
5268                                                 overridecolor[0] = 1;
5269                                                 overridecolor[1] = 1;
5270                                                 overridecolor[2] = 1;
5271                                         }
5272                                         if (!strcmp(value, "light_globe"))
5273                                         {
5274                                                 originhack[0] = 0;
5275                                                 originhack[1] = 0;
5276                                                 originhack[2] = 0;
5277                                                 overridecolor[0] = 1;
5278                                                 overridecolor[1] = 0.8;
5279                                                 overridecolor[2] = 0.4;
5280                                         }
5281                                         if (!strcmp(value, "light_flame_large_yellow"))
5282                                         {
5283                                                 originhack[0] = 0;
5284                                                 originhack[1] = 0;
5285                                                 originhack[2] = 0;
5286                                                 overridecolor[0] = 1;
5287                                                 overridecolor[1] = 0.5;
5288                                                 overridecolor[2] = 0.1;
5289                                         }
5290                                         if (!strcmp(value, "light_flame_small_yellow"))
5291                                         {
5292                                                 originhack[0] = 0;
5293                                                 originhack[1] = 0;
5294                                                 originhack[2] = 0;
5295                                                 overridecolor[0] = 1;
5296                                                 overridecolor[1] = 0.5;
5297                                                 overridecolor[2] = 0.1;
5298                                         }
5299                                         if (!strcmp(value, "light_torch_small_white"))
5300                                         {
5301                                                 originhack[0] = 0;
5302                                                 originhack[1] = 0;
5303                                                 originhack[2] = 0;
5304                                                 overridecolor[0] = 1;
5305                                                 overridecolor[1] = 0.5;
5306                                                 overridecolor[2] = 0.1;
5307                                         }
5308                                         if (!strcmp(value, "light_torch_small_walltorch"))
5309                                         {
5310                                                 originhack[0] = 0;
5311                                                 originhack[1] = 0;
5312                                                 originhack[2] = 0;
5313                                                 overridecolor[0] = 1;
5314                                                 overridecolor[1] = 0.5;
5315                                                 overridecolor[2] = 0.1;
5316                                         }
5317                                 }
5318                         }
5319                         else if (!strcmp("style", key))
5320                                 style = atoi(value);
5321                         else if (!strcmp("skin", key))
5322                                 skin = (int)atof(value);
5323                         else if (!strcmp("pflags", key))
5324                                 pflags = (int)atof(value);
5325                         else if (!strcmp("effects", key))
5326                                 effects = (int)atof(value);
5327                         else if (cl.worldmodel->type == mod_brushq3)
5328                         {
5329                                 if (!strcmp("scale", key))
5330                                         lightscale = atof(value);
5331                                 if (!strcmp("fade", key))
5332                                         fadescale = atof(value);
5333                         }
5334                 }
5335                 if (!islight)
5336                         continue;
5337                 if (lightscale <= 0)
5338                         lightscale = 1;
5339                 if (fadescale <= 0)
5340                         fadescale = 1;
5341                 if (color[0] == color[1] && color[0] == color[2])
5342                 {
5343                         color[0] *= overridecolor[0];
5344                         color[1] *= overridecolor[1];
5345                         color[2] *= overridecolor[2];
5346                 }
5347                 radius = light[3] * r_editlights_quakelightsizescale.value * lightscale / fadescale;
5348                 color[0] = color[0] * light[0];
5349                 color[1] = color[1] * light[1];
5350                 color[2] = color[2] * light[2];
5351                 switch (type)
5352                 {
5353                 case LIGHTTYPE_MINUSX:
5354                         break;
5355                 case LIGHTTYPE_RECIPX:
5356                         radius *= 2;
5357                         VectorScale(color, (1.0f / 16.0f), color);
5358                         break;
5359                 case LIGHTTYPE_RECIPXX:
5360                         radius *= 2;
5361                         VectorScale(color, (1.0f / 16.0f), color);
5362                         break;
5363                 default:
5364                 case LIGHTTYPE_NONE:
5365                         break;
5366                 case LIGHTTYPE_SUN:
5367                         break;
5368                 case LIGHTTYPE_MINUSXX:
5369                         break;
5370                 }
5371                 VectorAdd(origin, originhack, origin);
5372                 if (radius >= 1)
5373                         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);
5374         }
5375         if (entfiledata)
5376                 Mem_Free(entfiledata);
5377 }
5378
5379
5380 void R_Shadow_SetCursorLocationForView(void)
5381 {
5382         vec_t dist, push;
5383         vec3_t dest, endpos;
5384         trace_t trace;
5385         VectorMA(r_refdef.view.origin, r_editlights_cursordistance.value, r_refdef.view.forward, dest);
5386         trace = CL_TraceLine(r_refdef.view.origin, dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false);
5387         if (trace.fraction < 1)
5388         {
5389                 dist = trace.fraction * r_editlights_cursordistance.value;
5390                 push = r_editlights_cursorpushback.value;
5391                 if (push > dist)
5392                         push = dist;
5393                 push = -push;
5394                 VectorMA(trace.endpos, push, r_refdef.view.forward, endpos);
5395                 VectorMA(endpos, r_editlights_cursorpushoff.value, trace.plane.normal, endpos);
5396         }
5397         else
5398         {
5399                 VectorClear( endpos );
5400         }
5401         r_editlights_cursorlocation[0] = floor(endpos[0] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
5402         r_editlights_cursorlocation[1] = floor(endpos[1] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
5403         r_editlights_cursorlocation[2] = floor(endpos[2] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
5404 }
5405
5406 void R_Shadow_UpdateWorldLightSelection(void)
5407 {
5408         if (r_editlights.integer)
5409         {
5410                 R_Shadow_SetCursorLocationForView();
5411                 R_Shadow_SelectLightInView();
5412         }
5413         else
5414                 R_Shadow_SelectLight(NULL);
5415 }
5416
5417 void R_Shadow_EditLights_Clear_f(void)
5418 {
5419         R_Shadow_ClearWorldLights();
5420 }
5421
5422 void R_Shadow_EditLights_Reload_f(void)
5423 {
5424         if (!cl.worldmodel)
5425                 return;
5426         strlcpy(r_shadow_mapname, cl.worldmodel->name, sizeof(r_shadow_mapname));
5427         R_Shadow_ClearWorldLights();
5428         R_Shadow_LoadWorldLights();
5429         if (!Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray))
5430         {
5431                 R_Shadow_LoadLightsFile();
5432                 if (!Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray))
5433                         R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite();
5434         }
5435 }
5436
5437 void R_Shadow_EditLights_Save_f(void)
5438 {
5439         if (!cl.worldmodel)
5440                 return;
5441         R_Shadow_SaveWorldLights();
5442 }
5443
5444 void R_Shadow_EditLights_ImportLightEntitiesFromMap_f(void)
5445 {
5446         R_Shadow_ClearWorldLights();
5447         R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite();
5448 }
5449
5450 void R_Shadow_EditLights_ImportLightsFile_f(void)
5451 {
5452         R_Shadow_ClearWorldLights();
5453         R_Shadow_LoadLightsFile();
5454 }
5455
5456 void R_Shadow_EditLights_Spawn_f(void)
5457 {
5458         vec3_t color;
5459         if (!r_editlights.integer)
5460         {
5461                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
5462                 return;
5463         }
5464         if (Cmd_Argc() != 1)
5465         {
5466                 Con_Print("r_editlights_spawn does not take parameters\n");
5467                 return;
5468         }
5469         color[0] = color[1] = color[2] = 1;
5470         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), r_editlights_cursorlocation, vec3_origin, color, 200, 0, 0, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
5471 }
5472
5473 void R_Shadow_EditLights_Edit_f(void)
5474 {
5475         vec3_t origin, angles, color;
5476         vec_t radius, corona, coronasizescale, ambientscale, diffusescale, specularscale;
5477         int style, shadows, flags, normalmode, realtimemode;
5478         char cubemapname[MAX_INPUTLINE];
5479         if (!r_editlights.integer)
5480         {
5481                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
5482                 return;
5483         }
5484         if (!r_shadow_selectedlight)
5485         {
5486                 Con_Print("No selected light.\n");
5487                 return;
5488         }
5489         VectorCopy(r_shadow_selectedlight->origin, origin);
5490         VectorCopy(r_shadow_selectedlight->angles, angles);
5491         VectorCopy(r_shadow_selectedlight->color, color);
5492         radius = r_shadow_selectedlight->radius;
5493         style = r_shadow_selectedlight->style;
5494         if (r_shadow_selectedlight->cubemapname)
5495                 strlcpy(cubemapname, r_shadow_selectedlight->cubemapname, sizeof(cubemapname));
5496         else
5497                 cubemapname[0] = 0;
5498         shadows = r_shadow_selectedlight->shadow;
5499         corona = r_shadow_selectedlight->corona;
5500         coronasizescale = r_shadow_selectedlight->coronasizescale;
5501         ambientscale = r_shadow_selectedlight->ambientscale;
5502         diffusescale = r_shadow_selectedlight->diffusescale;
5503         specularscale = r_shadow_selectedlight->specularscale;
5504         flags = r_shadow_selectedlight->flags;
5505         normalmode = (flags & LIGHTFLAG_NORMALMODE) != 0;
5506         realtimemode = (flags & LIGHTFLAG_REALTIMEMODE) != 0;
5507         if (!strcmp(Cmd_Argv(1), "origin"))
5508         {
5509                 if (Cmd_Argc() != 5)
5510                 {
5511                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
5512                         return;
5513                 }
5514                 origin[0] = atof(Cmd_Argv(2));
5515                 origin[1] = atof(Cmd_Argv(3));
5516                 origin[2] = atof(Cmd_Argv(4));
5517         }
5518         else if (!strcmp(Cmd_Argv(1), "originx"))
5519         {
5520                 if (Cmd_Argc() != 3)
5521                 {
5522                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5523                         return;
5524                 }
5525                 origin[0] = atof(Cmd_Argv(2));
5526         }
5527         else if (!strcmp(Cmd_Argv(1), "originy"))
5528         {
5529                 if (Cmd_Argc() != 3)
5530                 {
5531                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5532                         return;
5533                 }
5534                 origin[1] = atof(Cmd_Argv(2));
5535         }
5536         else if (!strcmp(Cmd_Argv(1), "originz"))
5537         {
5538                 if (Cmd_Argc() != 3)
5539                 {
5540                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5541                         return;
5542                 }
5543                 origin[2] = atof(Cmd_Argv(2));
5544         }
5545         else if (!strcmp(Cmd_Argv(1), "move"))
5546         {
5547                 if (Cmd_Argc() != 5)
5548                 {
5549                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
5550                         return;
5551                 }
5552                 origin[0] += atof(Cmd_Argv(2));
5553                 origin[1] += atof(Cmd_Argv(3));
5554                 origin[2] += atof(Cmd_Argv(4));
5555         }
5556         else if (!strcmp(Cmd_Argv(1), "movex"))
5557         {
5558                 if (Cmd_Argc() != 3)
5559                 {
5560                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5561                         return;
5562                 }
5563                 origin[0] += atof(Cmd_Argv(2));
5564         }
5565         else if (!strcmp(Cmd_Argv(1), "movey"))
5566         {
5567                 if (Cmd_Argc() != 3)
5568                 {
5569                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5570                         return;
5571                 }
5572                 origin[1] += atof(Cmd_Argv(2));
5573         }
5574         else if (!strcmp(Cmd_Argv(1), "movez"))
5575         {
5576                 if (Cmd_Argc() != 3)
5577                 {
5578                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5579                         return;
5580                 }
5581                 origin[2] += atof(Cmd_Argv(2));
5582         }
5583         else if (!strcmp(Cmd_Argv(1), "angles"))
5584         {
5585                 if (Cmd_Argc() != 5)
5586                 {
5587                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
5588                         return;
5589                 }
5590                 angles[0] = atof(Cmd_Argv(2));
5591                 angles[1] = atof(Cmd_Argv(3));
5592                 angles[2] = atof(Cmd_Argv(4));
5593         }
5594         else if (!strcmp(Cmd_Argv(1), "anglesx"))
5595         {
5596                 if (Cmd_Argc() != 3)
5597                 {
5598                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5599                         return;
5600                 }
5601                 angles[0] = atof(Cmd_Argv(2));
5602         }
5603         else if (!strcmp(Cmd_Argv(1), "anglesy"))
5604         {
5605                 if (Cmd_Argc() != 3)
5606                 {
5607                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5608                         return;
5609                 }
5610                 angles[1] = atof(Cmd_Argv(2));
5611         }
5612         else if (!strcmp(Cmd_Argv(1), "anglesz"))
5613         {
5614                 if (Cmd_Argc() != 3)
5615                 {
5616                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5617                         return;
5618                 }
5619                 angles[2] = atof(Cmd_Argv(2));
5620         }
5621         else if (!strcmp(Cmd_Argv(1), "color"))
5622         {
5623                 if (Cmd_Argc() != 5)
5624                 {
5625                         Con_Printf("usage: r_editlights_edit %s red green blue\n", Cmd_Argv(1));
5626                         return;
5627                 }
5628                 color[0] = atof(Cmd_Argv(2));
5629                 color[1] = atof(Cmd_Argv(3));
5630                 color[2] = atof(Cmd_Argv(4));
5631         }
5632         else if (!strcmp(Cmd_Argv(1), "radius"))
5633         {
5634                 if (Cmd_Argc() != 3)
5635                 {
5636                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5637                         return;
5638                 }
5639                 radius = atof(Cmd_Argv(2));
5640         }
5641         else if (!strcmp(Cmd_Argv(1), "colorscale"))
5642         {
5643                 if (Cmd_Argc() == 3)
5644                 {
5645                         double scale = atof(Cmd_Argv(2));
5646                         color[0] *= scale;
5647                         color[1] *= scale;
5648                         color[2] *= scale;
5649                 }
5650                 else
5651                 {
5652                         if (Cmd_Argc() != 5)
5653                         {
5654                                 Con_Printf("usage: r_editlights_edit %s red green blue  (OR grey instead of red green blue)\n", Cmd_Argv(1));
5655                                 return;
5656                         }
5657                         color[0] *= atof(Cmd_Argv(2));
5658                         color[1] *= atof(Cmd_Argv(3));
5659                         color[2] *= atof(Cmd_Argv(4));
5660                 }
5661         }
5662         else if (!strcmp(Cmd_Argv(1), "radiusscale") || !strcmp(Cmd_Argv(1), "sizescale"))
5663         {
5664                 if (Cmd_Argc() != 3)
5665                 {
5666                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5667                         return;
5668                 }
5669                 radius *= atof(Cmd_Argv(2));
5670         }
5671         else if (!strcmp(Cmd_Argv(1), "style"))
5672         {
5673                 if (Cmd_Argc() != 3)
5674                 {
5675                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5676                         return;
5677                 }
5678                 style = atoi(Cmd_Argv(2));
5679         }
5680         else if (!strcmp(Cmd_Argv(1), "cubemap"))
5681         {
5682                 if (Cmd_Argc() > 3)
5683                 {
5684                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5685                         return;
5686                 }
5687                 if (Cmd_Argc() == 3)
5688                         strlcpy(cubemapname, Cmd_Argv(2), sizeof(cubemapname));
5689                 else
5690                         cubemapname[0] = 0;
5691         }
5692         else if (!strcmp(Cmd_Argv(1), "shadows"))
5693         {
5694                 if (Cmd_Argc() != 3)
5695                 {
5696                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5697                         return;
5698                 }
5699                 shadows = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
5700         }
5701         else if (!strcmp(Cmd_Argv(1), "corona"))
5702         {
5703                 if (Cmd_Argc() != 3)
5704                 {
5705                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5706                         return;
5707                 }
5708                 corona = atof(Cmd_Argv(2));
5709         }
5710         else if (!strcmp(Cmd_Argv(1), "coronasize"))
5711         {
5712                 if (Cmd_Argc() != 3)
5713                 {
5714                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5715                         return;
5716                 }
5717                 coronasizescale = atof(Cmd_Argv(2));
5718         }
5719         else if (!strcmp(Cmd_Argv(1), "ambient"))
5720         {
5721                 if (Cmd_Argc() != 3)
5722                 {
5723                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5724                         return;
5725                 }
5726                 ambientscale = atof(Cmd_Argv(2));
5727         }
5728         else if (!strcmp(Cmd_Argv(1), "diffuse"))
5729         {
5730                 if (Cmd_Argc() != 3)
5731                 {
5732                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5733                         return;
5734                 }
5735                 diffusescale = atof(Cmd_Argv(2));
5736         }
5737         else if (!strcmp(Cmd_Argv(1), "specular"))
5738         {
5739                 if (Cmd_Argc() != 3)
5740                 {
5741                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5742                         return;
5743                 }
5744                 specularscale = atof(Cmd_Argv(2));
5745         }
5746         else if (!strcmp(Cmd_Argv(1), "normalmode"))
5747         {
5748                 if (Cmd_Argc() != 3)
5749                 {
5750                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5751                         return;
5752                 }
5753                 normalmode = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
5754         }
5755         else if (!strcmp(Cmd_Argv(1), "realtimemode"))
5756         {
5757                 if (Cmd_Argc() != 3)
5758                 {
5759                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5760                         return;
5761                 }
5762                 realtimemode = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
5763         }
5764         else
5765         {
5766                 Con_Print("usage: r_editlights_edit [property] [value]\n");
5767                 Con_Print("Selected light's properties:\n");
5768                 Con_Printf("Origin       : %f %f %f\n", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);
5769                 Con_Printf("Angles       : %f %f %f\n", r_shadow_selectedlight->angles[0], r_shadow_selectedlight->angles[1], r_shadow_selectedlight->angles[2]);
5770                 Con_Printf("Color        : %f %f %f\n", r_shadow_selectedlight->color[0], r_shadow_selectedlight->color[1], r_shadow_selectedlight->color[2]);
5771                 Con_Printf("Radius       : %f\n", r_shadow_selectedlight->radius);
5772                 Con_Printf("Corona       : %f\n", r_shadow_selectedlight->corona);
5773                 Con_Printf("Style        : %i\n", r_shadow_selectedlight->style);
5774                 Con_Printf("Shadows      : %s\n", r_shadow_selectedlight->shadow ? "yes" : "no");
5775                 Con_Printf("Cubemap      : %s\n", r_shadow_selectedlight->cubemapname);
5776                 Con_Printf("CoronaSize   : %f\n", r_shadow_selectedlight->coronasizescale);
5777                 Con_Printf("Ambient      : %f\n", r_shadow_selectedlight->ambientscale);
5778                 Con_Printf("Diffuse      : %f\n", r_shadow_selectedlight->diffusescale);
5779                 Con_Printf("Specular     : %f\n", r_shadow_selectedlight->specularscale);
5780                 Con_Printf("NormalMode   : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_NORMALMODE) ? "yes" : "no");
5781                 Con_Printf("RealTimeMode : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_REALTIMEMODE) ? "yes" : "no");
5782                 return;
5783         }
5784         flags = (normalmode ? LIGHTFLAG_NORMALMODE : 0) | (realtimemode ? LIGHTFLAG_REALTIMEMODE : 0);
5785         R_Shadow_UpdateWorldLight(r_shadow_selectedlight, origin, angles, color, radius, corona, style, shadows, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
5786 }
5787
5788 void R_Shadow_EditLights_EditAll_f(void)
5789 {
5790         size_t lightindex;
5791         dlight_t *light;
5792         size_t range;
5793
5794         if (!r_editlights.integer)
5795         {
5796                 Con_Print("Cannot edit lights when not in editing mode. Set r_editlights to 1.\n");
5797                 return;
5798         }
5799
5800         // EditLights doesn't seem to have a "remove" command or something so:
5801         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
5802         for (lightindex = 0;lightindex < range;lightindex++)
5803         {
5804                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5805                 if (!light)
5806                         continue;
5807                 R_Shadow_SelectLight(light);
5808                 R_Shadow_EditLights_Edit_f();
5809         }
5810 }
5811
5812 void R_Shadow_EditLights_DrawSelectedLightProperties(void)
5813 {
5814         int lightnumber, lightcount;
5815         size_t lightindex, range;
5816         dlight_t *light;
5817         float x, y;
5818         char temp[256];
5819         if (!r_editlights.integer)
5820                 return;
5821         x = vid_conwidth.value - 240;
5822         y = 5;
5823         DrawQ_Pic(x-5, y-5, NULL, 250, 155, 0, 0, 0, 0.75, 0);
5824         lightnumber = -1;
5825         lightcount = 0;
5826         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
5827         for (lightindex = 0;lightindex < range;lightindex++)
5828         {
5829                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5830                 if (!light)
5831                         continue;
5832                 if (light == r_shadow_selectedlight)
5833                         lightnumber = lightindex;
5834                 lightcount++;
5835         }
5836         dpsnprintf(temp, sizeof(temp), "Cursor origin: %.0f %.0f %.0f", r_editlights_cursorlocation[0], r_editlights_cursorlocation[1], r_editlights_cursorlocation[2]); DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, false);y += 8;
5837         dpsnprintf(temp, sizeof(temp), "Total lights : %i active (%i total)", lightcount, (int)Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray)); DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, false);y += 8;
5838         y += 8;
5839         if (r_shadow_selectedlight == NULL)
5840                 return;
5841         dpsnprintf(temp, sizeof(temp), "Light #%i properties:", lightnumber);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5842         dpsnprintf(temp, sizeof(temp), "Origin       : %.0f %.0f %.0f\n", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5843         dpsnprintf(temp, sizeof(temp), "Angles       : %.0f %.0f %.0f\n", r_shadow_selectedlight->angles[0], r_shadow_selectedlight->angles[1], r_shadow_selectedlight->angles[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5844         dpsnprintf(temp, sizeof(temp), "Color        : %.2f %.2f %.2f\n", r_shadow_selectedlight->color[0], r_shadow_selectedlight->color[1], r_shadow_selectedlight->color[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5845         dpsnprintf(temp, sizeof(temp), "Radius       : %.0f\n", r_shadow_selectedlight->radius);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5846         dpsnprintf(temp, sizeof(temp), "Corona       : %.0f\n", r_shadow_selectedlight->corona);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5847         dpsnprintf(temp, sizeof(temp), "Style        : %i\n", r_shadow_selectedlight->style);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5848         dpsnprintf(temp, sizeof(temp), "Shadows      : %s\n", r_shadow_selectedlight->shadow ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5849         dpsnprintf(temp, sizeof(temp), "Cubemap      : %s\n", r_shadow_selectedlight->cubemapname);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5850         dpsnprintf(temp, sizeof(temp), "CoronaSize   : %.2f\n", r_shadow_selectedlight->coronasizescale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5851         dpsnprintf(temp, sizeof(temp), "Ambient      : %.2f\n", r_shadow_selectedlight->ambientscale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5852         dpsnprintf(temp, sizeof(temp), "Diffuse      : %.2f\n", r_shadow_selectedlight->diffusescale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5853         dpsnprintf(temp, sizeof(temp), "Specular     : %.2f\n", r_shadow_selectedlight->specularscale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5854         dpsnprintf(temp, sizeof(temp), "NormalMode   : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_NORMALMODE) ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5855         dpsnprintf(temp, sizeof(temp), "RealTimeMode : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_REALTIMEMODE) ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true);y += 8;
5856 }
5857
5858 void R_Shadow_EditLights_ToggleShadow_f(void)
5859 {
5860         if (!r_editlights.integer)
5861         {
5862                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
5863                 return;
5864         }
5865         if (!r_shadow_selectedlight)
5866         {
5867                 Con_Print("No selected light.\n");
5868                 return;
5869         }
5870         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);
5871 }
5872
5873 void R_Shadow_EditLights_ToggleCorona_f(void)
5874 {
5875         if (!r_editlights.integer)
5876         {
5877                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
5878                 return;
5879         }
5880         if (!r_shadow_selectedlight)
5881         {
5882                 Con_Print("No selected light.\n");
5883                 return;
5884         }
5885         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);
5886 }
5887
5888 void R_Shadow_EditLights_Remove_f(void)
5889 {
5890         if (!r_editlights.integer)
5891         {
5892                 Con_Print("Cannot remove light when not in editing mode.  Set r_editlights to 1.\n");
5893                 return;
5894         }
5895         if (!r_shadow_selectedlight)
5896         {
5897                 Con_Print("No selected light.\n");
5898                 return;
5899         }
5900         R_Shadow_FreeWorldLight(r_shadow_selectedlight);
5901         r_shadow_selectedlight = NULL;
5902 }
5903
5904 void R_Shadow_EditLights_Help_f(void)
5905 {
5906         Con_Print(
5907 "Documentation on r_editlights system:\n"
5908 "Settings:\n"
5909 "r_editlights : enable/disable editing mode\n"
5910 "r_editlights_cursordistance : maximum distance of cursor from eye\n"
5911 "r_editlights_cursorpushback : push back cursor this far from surface\n"
5912 "r_editlights_cursorpushoff : push cursor off surface this far\n"
5913 "r_editlights_cursorgrid : snap cursor to grid of this size\n"
5914 "r_editlights_quakelightsizescale : imported quake light entity size scaling\n"
5915 "Commands:\n"
5916 "r_editlights_help : this help\n"
5917 "r_editlights_clear : remove all lights\n"
5918 "r_editlights_reload : reload .rtlights, .lights file, or entities\n"
5919 "r_editlights_save : save to .rtlights file\n"
5920 "r_editlights_spawn : create a light with default settings\n"
5921 "r_editlights_edit command : edit selected light - more documentation below\n"
5922 "r_editlights_remove : remove selected light\n"
5923 "r_editlights_toggleshadow : toggles on/off selected light's shadow property\n"
5924 "r_editlights_importlightentitiesfrommap : reload light entities\n"
5925 "r_editlights_importlightsfile : reload .light file (produced by hlight)\n"
5926 "Edit commands:\n"
5927 "origin x y z : set light location\n"
5928 "originx x: set x component of light location\n"
5929 "originy y: set y component of light location\n"
5930 "originz z: set z component of light location\n"
5931 "move x y z : adjust light location\n"
5932 "movex x: adjust x component of light location\n"
5933 "movey y: adjust y component of light location\n"
5934 "movez z: adjust z component of light location\n"
5935 "angles x y z : set light angles\n"
5936 "anglesx x: set x component of light angles\n"
5937 "anglesy y: set y component of light angles\n"
5938 "anglesz z: set z component of light angles\n"
5939 "color r g b : set color of light (can be brighter than 1 1 1)\n"
5940 "radius radius : set radius (size) of light\n"
5941 "colorscale grey : multiply color of light (1 does nothing)\n"
5942 "colorscale r g b : multiply color of light (1 1 1 does nothing)\n"
5943 "radiusscale scale : multiply radius (size) of light (1 does nothing)\n"
5944 "sizescale scale : multiply radius (size) of light (1 does nothing)\n"
5945 "style style : set lightstyle of light (flickering patterns, switches, etc)\n"
5946 "cubemap basename : set filter cubemap of light (not yet supported)\n"
5947 "shadows 1/0 : turn on/off shadows\n"
5948 "corona n : set corona intensity\n"
5949 "coronasize n : set corona size (0-1)\n"
5950 "ambient n : set ambient intensity (0-1)\n"
5951 "diffuse n : set diffuse intensity (0-1)\n"
5952 "specular n : set specular intensity (0-1)\n"
5953 "normalmode 1/0 : turn on/off rendering of this light in rtworld 0 mode\n"
5954 "realtimemode 1/0 : turn on/off rendering of this light in rtworld 1 mode\n"
5955 "<nothing> : print light properties to console\n"
5956         );
5957 }
5958
5959 void R_Shadow_EditLights_CopyInfo_f(void)
5960 {
5961         if (!r_editlights.integer)
5962         {
5963                 Con_Print("Cannot copy light info when not in editing mode.  Set r_editlights to 1.\n");
5964                 return;
5965         }
5966         if (!r_shadow_selectedlight)
5967         {
5968                 Con_Print("No selected light.\n");
5969                 return;
5970         }
5971         VectorCopy(r_shadow_selectedlight->angles, r_shadow_bufferlight.angles);
5972         VectorCopy(r_shadow_selectedlight->color, r_shadow_bufferlight.color);
5973         r_shadow_bufferlight.radius = r_shadow_selectedlight->radius;
5974         r_shadow_bufferlight.style = r_shadow_selectedlight->style;
5975         if (r_shadow_selectedlight->cubemapname)
5976                 strlcpy(r_shadow_bufferlight.cubemapname, r_shadow_selectedlight->cubemapname, sizeof(r_shadow_bufferlight.cubemapname));
5977         else
5978                 r_shadow_bufferlight.cubemapname[0] = 0;
5979         r_shadow_bufferlight.shadow = r_shadow_selectedlight->shadow;
5980         r_shadow_bufferlight.corona = r_shadow_selectedlight->corona;
5981         r_shadow_bufferlight.coronasizescale = r_shadow_selectedlight->coronasizescale;
5982         r_shadow_bufferlight.ambientscale = r_shadow_selectedlight->ambientscale;
5983         r_shadow_bufferlight.diffusescale = r_shadow_selectedlight->diffusescale;
5984         r_shadow_bufferlight.specularscale = r_shadow_selectedlight->specularscale;
5985         r_shadow_bufferlight.flags = r_shadow_selectedlight->flags;
5986 }
5987
5988 void R_Shadow_EditLights_PasteInfo_f(void)
5989 {
5990         if (!r_editlights.integer)
5991         {
5992                 Con_Print("Cannot paste light info when not in editing mode.  Set r_editlights to 1.\n");
5993                 return;
5994         }
5995         if (!r_shadow_selectedlight)
5996         {
5997                 Con_Print("No selected light.\n");
5998                 return;
5999         }
6000         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);
6001 }
6002
6003 void R_Shadow_EditLights_Init(void)
6004 {
6005         Cvar_RegisterVariable(&r_editlights);
6006         Cvar_RegisterVariable(&r_editlights_cursordistance);
6007         Cvar_RegisterVariable(&r_editlights_cursorpushback);
6008         Cvar_RegisterVariable(&r_editlights_cursorpushoff);
6009         Cvar_RegisterVariable(&r_editlights_cursorgrid);
6010         Cvar_RegisterVariable(&r_editlights_quakelightsizescale);
6011         Cmd_AddCommand("r_editlights_help", R_Shadow_EditLights_Help_f, "prints documentation on console commands and variables in rtlight editing system");
6012         Cmd_AddCommand("r_editlights_clear", R_Shadow_EditLights_Clear_f, "removes all world lights (let there be darkness!)");
6013         Cmd_AddCommand("r_editlights_reload", R_Shadow_EditLights_Reload_f, "reloads rtlights file (or imports from .lights file or .ent file or the map itself)");
6014         Cmd_AddCommand("r_editlights_save", R_Shadow_EditLights_Save_f, "save .rtlights file for current level");
6015         Cmd_AddCommand("r_editlights_spawn", R_Shadow_EditLights_Spawn_f, "creates a light with default properties (let there be light!)");
6016         Cmd_AddCommand("r_editlights_edit", R_Shadow_EditLights_Edit_f, "changes a property on the selected light");
6017         Cmd_AddCommand("r_editlights_editall", R_Shadow_EditLights_EditAll_f, "changes a property on ALL lights at once (tip: use radiusscale and colorscale to alter these properties)");
6018         Cmd_AddCommand("r_editlights_remove", R_Shadow_EditLights_Remove_f, "remove selected light");
6019         Cmd_AddCommand("r_editlights_toggleshadow", R_Shadow_EditLights_ToggleShadow_f, "toggle on/off the shadow option on the selected light");
6020         Cmd_AddCommand("r_editlights_togglecorona", R_Shadow_EditLights_ToggleCorona_f, "toggle on/off the corona option on the selected light");
6021         Cmd_AddCommand("r_editlights_importlightentitiesfrommap", R_Shadow_EditLights_ImportLightEntitiesFromMap_f, "load lights from .ent file or map entities (ignoring .rtlights or .lights file)");
6022         Cmd_AddCommand("r_editlights_importlightsfile", R_Shadow_EditLights_ImportLightsFile_f, "load lights from .lights file (ignoring .rtlights or .ent files and map entities)");
6023         Cmd_AddCommand("r_editlights_copyinfo", R_Shadow_EditLights_CopyInfo_f, "store a copy of all properties (except origin) of the selected light");
6024         Cmd_AddCommand("r_editlights_pasteinfo", R_Shadow_EditLights_PasteInfo_f, "apply the stored properties onto the selected light (making it exactly identical except for origin)");
6025 }
6026
6027
6028
6029 /*
6030 =============================================================================
6031
6032 LIGHT SAMPLING
6033
6034 =============================================================================
6035 */
6036
6037 void R_CompleteLightPoint(vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const vec3_t p, int dynamic)
6038 {
6039         VectorClear(diffusecolor);
6040         VectorClear(diffusenormal);
6041
6042         if (!r_fullbright.integer && r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->brush.LightPoint)
6043         {
6044                 ambientcolor[0] = ambientcolor[1] = ambientcolor[2] = r_refdef.scene.ambient * (2.0f / 128.0f);
6045                 r_refdef.scene.worldmodel->brush.LightPoint(r_refdef.scene.worldmodel, p, ambientcolor, diffusecolor, diffusenormal);
6046         }
6047         else
6048                 VectorSet(ambientcolor, 1, 1, 1);
6049
6050         if (dynamic)
6051         {
6052                 int i;
6053                 float f, v[3];
6054                 rtlight_t *light;
6055                 for (i = 0;i < r_refdef.scene.numlights;i++)
6056                 {
6057                         light = r_refdef.scene.lights[i];
6058                         Matrix4x4_Transform(&light->matrix_worldtolight, p, v);
6059                         f = 1 - VectorLength2(v);
6060                         if (f > 0 && CL_TraceLine(p, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction == 1)
6061                                 VectorMA(ambientcolor, f, light->currentcolor, ambientcolor);
6062                 }
6063         }
6064 }