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 extern void R_Shadow_EditLights_Init(void);
 144
 145 typedef enum r_shadow_rendermode_e
 146 {
 147         R_SHADOW_RENDERMODE_NONE,
 148         R_SHADOW_RENDERMODE_STENCIL,
 149         R_SHADOW_RENDERMODE_STENCILTWOSIDE,
 150         R_SHADOW_RENDERMODE_LIGHT_VERTEX,
 151         R_SHADOW_RENDERMODE_LIGHT_DOT3,
 152         R_SHADOW_RENDERMODE_LIGHT_GLSL,
 153         R_SHADOW_RENDERMODE_VISIBLEVOLUMES,
 154         R_SHADOW_RENDERMODE_VISIBLELIGHTING,
 155 }
 156 r_shadow_rendermode_t;
 157
 158 r_shadow_rendermode_t r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
 159 r_shadow_rendermode_t r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_NONE;
 160 r_shadow_rendermode_t r_shadow_shadowingrendermode = R_SHADOW_RENDERMODE_NONE;
 161
 162 int maxshadowtriangles;
 163 int *shadowelements;
 164
 165 int maxshadowvertices;
 166 float *shadowvertex3f;
 167
 168 int maxshadowmark;
 169 int numshadowmark;
 170 int *shadowmark;
 171 int *shadowmarklist;
 172 int shadowmarkcount;
 173
 174 int maxvertexupdate;
 175 int *vertexupdate;
 176 int *vertexremap;
 177 int vertexupdatenum;
 178
 179 int r_shadow_buffer_numleafpvsbytes;
 180 unsigned char *r_shadow_buffer_leafpvs;
 181 int *r_shadow_buffer_leaflist;
 182
 183 int r_shadow_buffer_numsurfacepvsbytes;
 184 unsigned char *r_shadow_buffer_surfacepvs;
 185 int *r_shadow_buffer_surfacelist;
 186
 187 rtexturepool_t *r_shadow_texturepool;
 188 rtexture_t *r_shadow_attenuation2dtexture;
 189 rtexture_t *r_shadow_attenuation3dtexture;
 190
 191 // lights are reloaded when this changes
 192 char r_shadow_mapname[MAX_QPATH];
 193
 194 // used only for light filters (cubemaps)
 195 rtexturepool_t *r_shadow_filters_texturepool;
 196
 197 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"};
 198 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"};
 199 cvar_t r_shadow_debuglight = {0, "r_shadow_debuglight", "-1", "renders only one light, for level design purposes or debugging"};
 200 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)"};
 201 cvar_t r_shadow_gloss2intensity = {0, "r_shadow_gloss2intensity", "0.25", "how bright the forced flat gloss should look if r_shadow_gloss is 2"};
 202 cvar_t r_shadow_glossintensity = {0, "r_shadow_glossintensity", "1", "how bright textured glossmaps should look if r_shadow_gloss is 1 or 2"};
 203 cvar_t r_shadow_lightattenuationpower = {0, "r_shadow_lightattenuationpower", "0.5", "changes attenuation texture generation (does not affect r_glsl lighting)"};
 204 cvar_t r_shadow_lightattenuationscale = {0, "r_shadow_lightattenuationscale", "1", "changes attenuation texture generation (does not affect r_glsl lighting)"};
 205 cvar_t r_shadow_lightintensityscale = {0, "r_shadow_lightintensityscale", "1", "renders all world lights brighter or darker"};
 206 cvar_t r_shadow_portallight = {0, "r_shadow_portallight", "1", "use portal culling to exactly determine lit triangles when compiling world lights"};
 207 cvar_t r_shadow_projectdistance = {0, "r_shadow_projectdistance", "1000000", "how far to cast shadows"};
 208 cvar_t r_shadow_realtime_dlight = {CVAR_SAVE, "r_shadow_realtime_dlight", "1", "enables rendering of dynamic lights such as explosions and rocket light"};
 209 cvar_t r_shadow_realtime_dlight_shadows = {CVAR_SAVE, "r_shadow_realtime_dlight_shadows", "1", "enables rendering of shadows from dynamic lights"};
 210 cvar_t r_shadow_realtime_dlight_portalculling = {0, "r_shadow_realtime_dlight_portalculling", "0", "enables portal culling optimizations on dynamic lights (slow!  you probably don't want this!)"};
 211 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)"};
 212 cvar_t r_shadow_realtime_world_dlightshadows = {CVAR_SAVE, "r_shadow_realtime_world_dlightshadows", "1", "enables shadows from dynamic lights when using full world lighting"};
 213 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"};
 214 cvar_t r_shadow_realtime_world_shadows = {CVAR_SAVE, "r_shadow_realtime_world_shadows", "1", "enables rendering of shadows from world lights"};
 215 cvar_t r_shadow_realtime_world_compile = {0, "r_shadow_realtime_world_compile", "1", "enables compilation of world lights for higher performance rendering"};
 216 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"};
 217 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)"};
 218 cvar_t r_shadow_shadow_polygonfactor = {0, "r_shadow_shadow_polygonfactor", "0", "how much to enlarge shadow volume polygons when rendering (should be 0!)"};
 219 cvar_t r_shadow_shadow_polygonoffset = {0, "r_shadow_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)"};
 220 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)"};
 221 cvar_t gl_ext_stenciltwoside = {0, "gl_ext_stenciltwoside", "1", "make use of GL_EXT_stenciltwoside extension (NVIDIA only)"};
 222 cvar_t r_editlights = {0, "r_editlights", "0", "enables .rtlights file editing mode"};
 223 cvar_t r_editlights_cursordistance = {0, "r_editlights_cursordistance", "1024", "maximum distance of cursor from eye"};
 224 cvar_t r_editlights_cursorpushback = {0, "r_editlights_cursorpushback", "0", "how far to pull the cursor back toward the eye"};
 225 cvar_t r_editlights_cursorpushoff = {0, "r_editlights_cursorpushoff", "4", "how far to push the cursor off the impacted surface"};
 226 cvar_t r_editlights_cursorgrid = {0, "r_editlights_cursorgrid", "4", "snaps cursor to this grid size"};
 227 cvar_t r_editlights_quakelightsizescale = {CVAR_SAVE, "r_editlights_quakelightsizescale", "1", "changes size of light entities loaded from a map"};
 228
 229 float r_shadow_attenpower, r_shadow_attenscale;
 230
 231 rtlight_t *r_shadow_compilingrtlight;
 232 dlight_t *r_shadow_worldlightchain;
 233 dlight_t *r_shadow_selectedlight;
 234 dlight_t r_shadow_bufferlight;
 235 vec3_t r_editlights_cursorlocation;
 236
 237 extern int con_vislines;
 238
 239 typedef struct cubemapinfo_s
 240 {
 241         char basename[64];
 242         rtexture_t *texture;
 243 }
 244 cubemapinfo_t;
 245
 246 #define MAX_CUBEMAPS 256
 247 static int numcubemaps;
 248 static cubemapinfo_t cubemaps[MAX_CUBEMAPS];
 249
 250 void R_Shadow_UncompileWorldLights(void);
 251 void R_Shadow_ClearWorldLights(void);
 252 void R_Shadow_SaveWorldLights(void);
 253 void R_Shadow_LoadWorldLights(void);
 254 void R_Shadow_LoadLightsFile(void);
 255 void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void);
 256 void R_Shadow_EditLights_Reload_f(void);
 257 void R_Shadow_ValidateCvars(void);
 258 static void R_Shadow_MakeTextures(void);
 259 void R_Shadow_DrawWorldLightShadowVolume(matrix4x4_t *matrix, dlight_t *light);
 260
 261 void r_shadow_start(void)
 262 {
 263         // allocate vertex processing arrays
 264         numcubemaps = 0;
 265         r_shadow_attenuation2dtexture = NULL;
 266         r_shadow_attenuation3dtexture = NULL;
 267         r_shadow_texturepool = NULL;
 268         r_shadow_filters_texturepool = NULL;
 269         R_Shadow_ValidateCvars();
 270         R_Shadow_MakeTextures();
 271         maxshadowtriangles = 0;
 272         shadowelements = NULL;
 273         maxshadowvertices = 0;
 274         shadowvertex3f = NULL;
 275         maxvertexupdate = 0;
 276         vertexupdate = NULL;
 277         vertexremap = NULL;
 278         vertexupdatenum = 0;
 279         maxshadowmark = 0;
 280         numshadowmark = 0;
 281         shadowmark = NULL;
 282         shadowmarklist = NULL;
 283         shadowmarkcount = 0;
 284         r_shadow_buffer_numleafpvsbytes = 0;
 285         r_shadow_buffer_leafpvs = NULL;
 286         r_shadow_buffer_leaflist = NULL;
 287         r_shadow_buffer_numsurfacepvsbytes = 0;
 288         r_shadow_buffer_surfacepvs = NULL;
 289         r_shadow_buffer_surfacelist = NULL;
 290 }
 291
 292 void r_shadow_shutdown(void)
 293 {
 294         R_Shadow_UncompileWorldLights();
 295         numcubemaps = 0;
 296         r_shadow_attenuation2dtexture = NULL;
 297         r_shadow_attenuation3dtexture = NULL;
 298         R_FreeTexturePool(&r_shadow_texturepool);
 299         R_FreeTexturePool(&r_shadow_filters_texturepool);
 300         maxshadowtriangles = 0;
 301         if (shadowelements)
 302                 Mem_Free(shadowelements);
 303         shadowelements = NULL;
 304         if (shadowvertex3f)
 305                 Mem_Free(shadowvertex3f);
 306         shadowvertex3f = NULL;
 307         maxvertexupdate = 0;
 308         if (vertexupdate)
 309                 Mem_Free(vertexupdate);
 310         vertexupdate = NULL;
 311         if (vertexremap)
 312                 Mem_Free(vertexremap);
 313         vertexremap = NULL;
 314         vertexupdatenum = 0;
 315         maxshadowmark = 0;
 316         numshadowmark = 0;
 317         if (shadowmark)
 318                 Mem_Free(shadowmark);
 319         shadowmark = NULL;
 320         if (shadowmarklist)
 321                 Mem_Free(shadowmarklist);
 322         shadowmarklist = NULL;
 323         shadowmarkcount = 0;
 324         r_shadow_buffer_numleafpvsbytes = 0;
 325         if (r_shadow_buffer_leafpvs)
 326                 Mem_Free(r_shadow_buffer_leafpvs);
 327         r_shadow_buffer_leafpvs = NULL;
 328         if (r_shadow_buffer_leaflist)
 329                 Mem_Free(r_shadow_buffer_leaflist);
 330         r_shadow_buffer_leaflist = NULL;
 331         r_shadow_buffer_numsurfacepvsbytes = 0;
 332         if (r_shadow_buffer_surfacepvs)
 333                 Mem_Free(r_shadow_buffer_surfacepvs);
 334         r_shadow_buffer_surfacepvs = NULL;
 335         if (r_shadow_buffer_surfacelist)
 336                 Mem_Free(r_shadow_buffer_surfacelist);
 337         r_shadow_buffer_surfacelist = NULL;
 338 }
 339
 340 void r_shadow_newmap(void)
 341 {
 342 }
 343
 344 void R_Shadow_Help_f(void)
 345 {
 346         Con_Printf(
 347 "Documentation on r_shadow system:\n"
 348 "Settings:\n"
 349 "r_shadow_bumpscale_basetexture : base texture as bumpmap with this scale\n"
 350 "r_shadow_bumpscale_bumpmap : depth scale for bumpmap conversion\n"
 351 "r_shadow_debuglight : render only this light number (-1 = all)\n"
 352 "r_shadow_gloss 0/1/2 : no gloss, gloss textures only, force gloss\n"
 353 "r_shadow_gloss2intensity : brightness of forced gloss\n"
 354 "r_shadow_glossintensity : brightness of textured gloss\n"
 355 "r_shadow_lightattenuationpower : used to generate attenuation texture\n"
 356 "r_shadow_lightattenuationscale : used to generate attenuation texture\n"
 357 "r_shadow_lightintensityscale : scale rendering brightness of all lights\n"
 358 "r_shadow_portallight : use portal visibility for static light precomputation\n"
 359 "r_shadow_projectdistance : shadow volume projection distance\n"
 360 "r_shadow_realtime_dlight : use high quality dynamic lights in normal mode\n"
 361 "r_shadow_realtime_dlight_shadows : cast shadows from dlights\n"
 362 "r_shadow_realtime_dlight_portalculling : work hard to reduce graphics work\n"
 363 "r_shadow_realtime_world : use high quality world lighting mode\n"
 364 "r_shadow_realtime_world_dlightshadows : cast shadows from dlights\n"
 365 "r_shadow_realtime_world_lightmaps : use lightmaps in addition to lights\n"
 366 "r_shadow_realtime_world_shadows : cast shadows from world lights\n"
 367 "r_shadow_realtime_world_compile : compile surface/visibility information\n"
 368 "r_shadow_realtime_world_compileshadow : compile shadow geometry\n"
 369 "r_shadow_scissor : use scissor optimization\n"
 370 "r_shadow_shadow_polygonfactor : nudge shadow volumes closer/further\n"
 371 "r_shadow_shadow_polygonoffset : nudge shadow volumes closer/further\n"
 372 "r_shadow_texture3d : use 3d attenuation texture (if hardware supports)\n"
 373 "r_showlighting : useful for performance testing; bright = slow!\n"
 374 "r_showshadowvolumes : useful for performance testing; bright = slow!\n"
 375 "Commands:\n"
 376 "r_shadow_help : this help\n"
 377         );
 378 }
 379
 380 void R_Shadow_Init(void)
 381 {
 382         Cvar_RegisterVariable(&r_shadow_bumpscale_basetexture);
 383         Cvar_RegisterVariable(&r_shadow_bumpscale_bumpmap);
 384         Cvar_RegisterVariable(&r_shadow_debuglight);
 385         Cvar_RegisterVariable(&r_shadow_gloss);
 386         Cvar_RegisterVariable(&r_shadow_gloss2intensity);
 387         Cvar_RegisterVariable(&r_shadow_glossintensity);
 388         Cvar_RegisterVariable(&r_shadow_lightattenuationpower);
 389         Cvar_RegisterVariable(&r_shadow_lightattenuationscale);
 390         Cvar_RegisterVariable(&r_shadow_lightintensityscale);
 391         Cvar_RegisterVariable(&r_shadow_portallight);
 392         Cvar_RegisterVariable(&r_shadow_projectdistance);
 393         Cvar_RegisterVariable(&r_shadow_realtime_dlight);
 394         Cvar_RegisterVariable(&r_shadow_realtime_dlight_shadows);
 395         Cvar_RegisterVariable(&r_shadow_realtime_dlight_portalculling);
 396         Cvar_RegisterVariable(&r_shadow_realtime_world);
 397         Cvar_RegisterVariable(&r_shadow_realtime_world_dlightshadows);
 398         Cvar_RegisterVariable(&r_shadow_realtime_world_lightmaps);
 399         Cvar_RegisterVariable(&r_shadow_realtime_world_shadows);
 400         Cvar_RegisterVariable(&r_shadow_realtime_world_compile);
 401         Cvar_RegisterVariable(&r_shadow_realtime_world_compileshadow);
 402         Cvar_RegisterVariable(&r_shadow_scissor);
 403         Cvar_RegisterVariable(&r_shadow_shadow_polygonfactor);
 404         Cvar_RegisterVariable(&r_shadow_shadow_polygonoffset);
 405         Cvar_RegisterVariable(&r_shadow_texture3d);
 406         Cvar_RegisterVariable(&gl_ext_stenciltwoside);
 407         if (gamemode == GAME_TENEBRAE)
 408         {
 409                 Cvar_SetValue("r_shadow_gloss", 2);
 410                 Cvar_SetValue("r_shadow_bumpscale_basetexture", 4);
 411         }
 412         Cmd_AddCommand("r_shadow_help", R_Shadow_Help_f, "prints documentation on console commands and variables used by realtime lighting and shadowing system");
 413         R_Shadow_EditLights_Init();
 414         r_shadow_worldlightchain = NULL;
 415         maxshadowtriangles = 0;
 416         shadowelements = NULL;
 417         maxshadowvertices = 0;
 418         shadowvertex3f = NULL;
 419         maxvertexupdate = 0;
 420         vertexupdate = NULL;
 421         vertexremap = NULL;
 422         vertexupdatenum = 0;
 423         maxshadowmark = 0;
 424         numshadowmark = 0;
 425         shadowmark = NULL;
 426         shadowmarklist = NULL;
 427         shadowmarkcount = 0;
 428         r_shadow_buffer_numleafpvsbytes = 0;
 429         r_shadow_buffer_leafpvs = NULL;
 430         r_shadow_buffer_leaflist = NULL;
 431         r_shadow_buffer_numsurfacepvsbytes = 0;
 432         r_shadow_buffer_surfacepvs = NULL;
 433         r_shadow_buffer_surfacelist = NULL;
 434         R_RegisterModule("R_Shadow", r_shadow_start, r_shadow_shutdown, r_shadow_newmap);
 435 }
 436
 437 matrix4x4_t matrix_attenuationxyz =
 438 {
 439         {
 440                 {0.5, 0.0, 0.0, 0.5},
 441                 {0.0, 0.5, 0.0, 0.5},
 442                 {0.0, 0.0, 0.5, 0.5},
 443                 {0.0, 0.0, 0.0, 1.0}
 444         }
 445 };
 446
 447 matrix4x4_t matrix_attenuationz =
 448 {
 449         {
 450                 {0.0, 0.0, 0.5, 0.5},
 451                 {0.0, 0.0, 0.0, 0.5},
 452                 {0.0, 0.0, 0.0, 0.5},
 453                 {0.0, 0.0, 0.0, 1.0}
 454         }
 455 };
 456
 457 void R_Shadow_ResizeShadowArrays(int numvertices, int numtriangles)
 458 {
 459         // make sure shadowelements is big enough for this volume
 460         if (maxshadowtriangles < numtriangles)
 461         {
 462                 maxshadowtriangles = numtriangles;
 463                 if (shadowelements)
 464                         Mem_Free(shadowelements);
 465                 shadowelements = (int *)Mem_Alloc(r_main_mempool, maxshadowtriangles * sizeof(int[24]));
 466         }
 467         // make sure shadowvertex3f is big enough for this volume
 468         if (maxshadowvertices < numvertices)
 469         {
 470                 maxshadowvertices = numvertices;
 471                 if (shadowvertex3f)
 472                         Mem_Free(shadowvertex3f);
 473                 shadowvertex3f = (float *)Mem_Alloc(r_main_mempool, maxshadowvertices * sizeof(float[6]));
 474         }
 475 }
 476
 477 static void R_Shadow_EnlargeLeafSurfaceBuffer(int numleafs, int numsurfaces)
 478 {
 479         int numleafpvsbytes = (((numleafs + 7) >> 3) + 255) & ~255;
 480         int numsurfacepvsbytes = (((numsurfaces + 7) >> 3) + 255) & ~255;
 481         if (r_shadow_buffer_numleafpvsbytes < numleafpvsbytes)
 482         {
 483                 if (r_shadow_buffer_leafpvs)
 484                         Mem_Free(r_shadow_buffer_leafpvs);
 485                 if (r_shadow_buffer_leaflist)
 486                         Mem_Free(r_shadow_buffer_leaflist);
 487                 r_shadow_buffer_numleafpvsbytes = numleafpvsbytes;
 488                 r_shadow_buffer_leafpvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numleafpvsbytes);
 489                 r_shadow_buffer_leaflist = (int *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numleafpvsbytes * 8 * sizeof(*r_shadow_buffer_leaflist));
 490         }
 491         if (r_shadow_buffer_numsurfacepvsbytes < numsurfacepvsbytes)
 492         {
 493                 if (r_shadow_buffer_surfacepvs)
 494                         Mem_Free(r_shadow_buffer_surfacepvs);
 495                 if (r_shadow_buffer_surfacelist)
 496                         Mem_Free(r_shadow_buffer_surfacelist);
 497                 r_shadow_buffer_numsurfacepvsbytes = numsurfacepvsbytes;
 498                 r_shadow_buffer_surfacepvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numsurfacepvsbytes);
 499                 r_shadow_buffer_surfacelist = (int *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numsurfacepvsbytes * 8 * sizeof(*r_shadow_buffer_surfacelist));
 500         }
 501 }
 502
 503 void R_Shadow_PrepareShadowMark(int numtris)
 504 {
 505         // make sure shadowmark is big enough for this volume
 506         if (maxshadowmark < numtris)
 507         {
 508                 maxshadowmark = numtris;
 509                 if (shadowmark)
 510                         Mem_Free(shadowmark);
 511                 if (shadowmarklist)
 512                         Mem_Free(shadowmarklist);
 513                 shadowmark = (int *)Mem_Alloc(r_main_mempool, maxshadowmark * sizeof(*shadowmark));
 514                 shadowmarklist = (int *)Mem_Alloc(r_main_mempool, maxshadowmark * sizeof(*shadowmarklist));
 515                 shadowmarkcount = 0;
 516         }
 517         shadowmarkcount++;
 518         // if shadowmarkcount wrapped we clear the array and adjust accordingly
 519         if (shadowmarkcount == 0)
 520         {
 521                 shadowmarkcount = 1;
 522                 memset(shadowmark, 0, maxshadowmark * sizeof(*shadowmark));
 523         }
 524         numshadowmark = 0;
 525 }
 526
 527 int R_Shadow_ConstructShadowVolume(int innumvertices, int innumtris, const int *inelement3i, const int *inneighbor3i, const float *invertex3f, int *outnumvertices, int *outelement3i, float *outvertex3f, const float *projectorigin, float projectdistance, int numshadowmarktris, const int *shadowmarktris)
 528 {
 529         int i, j;
 530         int outtriangles = 0, outvertices = 0;
 531         const int *element;
 532         const float *vertex;
 533
 534         if (maxvertexupdate < innumvertices)
 535         {
 536                 maxvertexupdate = innumvertices;
 537                 if (vertexupdate)
 538                         Mem_Free(vertexupdate);
 539                 if (vertexremap)
 540                         Mem_Free(vertexremap);
 541                 vertexupdate = (int *)Mem_Alloc(r_main_mempool, maxvertexupdate * sizeof(int));
 542                 vertexremap = (int *)Mem_Alloc(r_main_mempool, maxvertexupdate * sizeof(int));
 543                 vertexupdatenum = 0;
 544         }
 545         vertexupdatenum++;
 546         if (vertexupdatenum == 0)
 547         {
 548                 vertexupdatenum = 1;
 549                 memset(vertexupdate, 0, maxvertexupdate * sizeof(int));
 550                 memset(vertexremap, 0, maxvertexupdate * sizeof(int));
 551         }
 552
 553         for (i = 0;i < numshadowmarktris;i++)
 554                 shadowmark[shadowmarktris[i]] = shadowmarkcount;
 555
 556         for (i = 0;i < numshadowmarktris;i++)
 557         {
 558                 element = inelement3i + shadowmarktris[i] * 3;
 559                 // make sure the vertices are created
 560                 for (j = 0;j < 3;j++)
 561                 {
 562                         if (vertexupdate[element[j]] != vertexupdatenum)
 563                         {
 564                                 float ratio, direction[3];
 565                                 vertexupdate[element[j]] = vertexupdatenum;
 566                                 vertexremap[element[j]] = outvertices;
 567                                 vertex = invertex3f + element[j] * 3;
 568                                 // project one copy of the vertex to the sphere radius of the light
 569                                 // (FIXME: would projecting it to the light box be better?)
 570                                 VectorSubtract(vertex, projectorigin, direction);
 571                                 ratio = projectdistance / VectorLength(direction);
 572                                 VectorCopy(vertex, outvertex3f);
 573                                 VectorMA(projectorigin, ratio, direction, (outvertex3f + 3));
 574                                 outvertex3f += 6;
 575                                 outvertices += 2;
 576                         }
 577                 }
 578         }
 579
 580         for (i = 0;i < numshadowmarktris;i++)
 581         {
 582                 int remappedelement[3];
 583                 int markindex;
 584                 const int *neighbortriangle;
 585
 586                 markindex = shadowmarktris[i] * 3;
 587                 element = inelement3i + markindex;
 588                 neighbortriangle = inneighbor3i + markindex;
 589                 // output the front and back triangles
 590                 outelement3i[0] = vertexremap[element[0]];
 591                 outelement3i[1] = vertexremap[element[1]];
 592                 outelement3i[2] = vertexremap[element[2]];
 593                 outelement3i[3] = vertexremap[element[2]] + 1;
 594                 outelement3i[4] = vertexremap[element[1]] + 1;
 595                 outelement3i[5] = vertexremap[element[0]] + 1;
 596
 597                 outelement3i += 6;
 598                 outtriangles += 2;
 599                 // output the sides (facing outward from this triangle)
 600                 if (shadowmark[neighbortriangle[0]] != shadowmarkcount)
 601                 {
 602                         remappedelement[0] = vertexremap[element[0]];
 603                         remappedelement[1] = vertexremap[element[1]];
 604                         outelement3i[0] = remappedelement[1];
 605                         outelement3i[1] = remappedelement[0];
 606                         outelement3i[2] = remappedelement[0] + 1;
 607                         outelement3i[3] = remappedelement[1];
 608                         outelement3i[4] = remappedelement[0] + 1;
 609                         outelement3i[5] = remappedelement[1] + 1;
 610
 611                         outelement3i += 6;
 612                         outtriangles += 2;
 613                 }
 614                 if (shadowmark[neighbortriangle[1]] != shadowmarkcount)
 615                 {
 616                         remappedelement[1] = vertexremap[element[1]];
 617                         remappedelement[2] = vertexremap[element[2]];
 618                         outelement3i[0] = remappedelement[2];
 619                         outelement3i[1] = remappedelement[1];
 620                         outelement3i[2] = remappedelement[1] + 1;
 621                         outelement3i[3] = remappedelement[2];
 622                         outelement3i[4] = remappedelement[1] + 1;
 623                         outelement3i[5] = remappedelement[2] + 1;
 624
 625                         outelement3i += 6;
 626                         outtriangles += 2;
 627                 }
 628                 if (shadowmark[neighbortriangle[2]] != shadowmarkcount)
 629                 {
 630                         remappedelement[0] = vertexremap[element[0]];
 631                         remappedelement[2] = vertexremap[element[2]];
 632                         outelement3i[0] = remappedelement[0];
 633                         outelement3i[1] = remappedelement[2];
 634                         outelement3i[2] = remappedelement[2] + 1;
 635                         outelement3i[3] = remappedelement[0];
 636                         outelement3i[4] = remappedelement[2] + 1;
 637                         outelement3i[5] = remappedelement[0] + 1;
 638
 639                         outelement3i += 6;
 640                         outtriangles += 2;
 641                 }
 642         }
 643         if (outnumvertices)
 644                 *outnumvertices = outvertices;
 645         return outtriangles;
 646 }
 647
 648 void R_Shadow_VolumeFromList(int numverts, int numtris, const float *invertex3f, const int *elements, const int *neighbors, const vec3_t projectorigin, float projectdistance, int nummarktris, const int *marktris)
 649 {
 650         int tris, outverts;
 651         if (projectdistance < 0.1)
 652         {
 653                 Con_Printf("R_Shadow_Volume: projectdistance %f\n");
 654                 return;
 655         }
 656         if (!numverts || !nummarktris)
 657                 return;
 658         // make sure shadowelements is big enough for this volume
 659         if (maxshadowtriangles < nummarktris || maxshadowvertices < numverts)
 660                 R_Shadow_ResizeShadowArrays((numverts + 255) & ~255, (nummarktris + 255) & ~255);
 661         tris = R_Shadow_ConstructShadowVolume(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdistance, nummarktris, marktris);
 662         renderstats.lights_dynamicshadowtriangles += tris;
 663         R_Shadow_RenderVolume(outverts, tris, shadowvertex3f, shadowelements);
 664 }
 665
 666 void R_Shadow_MarkVolumeFromBox(int firsttriangle, int numtris, const float *invertex3f, const int *elements, const vec3_t projectorigin, const vec3_t lightmins, const vec3_t lightmaxs, const vec3_t surfacemins, const vec3_t surfacemaxs)
 667 {
 668         int t, tend;
 669         const int *e;
 670         const float *v[3];
 671         if (!BoxesOverlap(lightmins, lightmaxs, surfacemins, surfacemaxs))
 672                 return;
 673         tend = firsttriangle + numtris;
 674         if (surfacemins[0] >= lightmins[0] && surfacemaxs[0] <= lightmaxs[0]
 675          && surfacemins[1] >= lightmins[1] && surfacemaxs[1] <= lightmaxs[1]
 676          && surfacemins[2] >= lightmins[2] && surfacemaxs[2] <= lightmaxs[2])
 677         {
 678                 // surface box entirely inside light box, no box cull
 679                 for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
 680                         if (PointInfrontOfTriangle(projectorigin, invertex3f + e[0] * 3, invertex3f + e[1] * 3, invertex3f + e[2] * 3))
 681                                 shadowmarklist[numshadowmark++] = t;
 682         }
 683         else
 684         {
 685                 // surface box not entirely inside light box, cull each triangle
 686                 for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
 687                 {
 688                         v[0] = invertex3f + e[0] * 3;
 689                         v[1] = invertex3f + e[1] * 3;
 690                         v[2] = invertex3f + e[2] * 3;
 691                         if (PointInfrontOfTriangle(projectorigin, v[0], v[1], v[2])
 692                          && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0]))
 693                          && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0]))
 694                          && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1]))
 695                          && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1]))
 696                          && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2]))
 697                          && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
 698                                 shadowmarklist[numshadowmark++] = t;
 699                 }
 700         }
 701 }
 702
 703 void R_Shadow_RenderVolume(int numvertices, int numtriangles, const float *vertex3f, const int *element3i)
 704 {
 705         rmeshstate_t m;
 706         if (r_shadow_compilingrtlight)
 707         {
 708                 // if we're compiling an rtlight, capture the mesh
 709                 Mod_ShadowMesh_AddMesh(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, NULL, NULL, NULL, vertex3f, NULL, NULL, NULL, NULL, numtriangles, element3i);
 710                 return;
 711         }
 712         renderstats.lights_shadowtriangles += numtriangles;
 713         memset(&m, 0, sizeof(m));
 714         m.pointer_vertex = vertex3f;
 715         R_Mesh_State(&m);
 716         GL_LockArrays(0, numvertices);
 717         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_STENCIL)
 718         {
 719                 // decrement stencil if backface is behind depthbuffer
 720                 qglCullFace(GL_BACK); // quake is backwards, this culls front faces
 721                 qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);
 722                 R_Mesh_Draw(0, numvertices, numtriangles, element3i);
 723                 // increment stencil if frontface is behind depthbuffer
 724                 qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
 725                 qglStencilOp(GL_KEEP, GL_INCR, GL_KEEP);
 726         }
 727         R_Mesh_Draw(0, numvertices, numtriangles, element3i);
 728         GL_LockArrays(0, 0);
 729 }
 730
 731 static void R_Shadow_MakeTextures(void)
 732 {
 733         int x, y, z, d;
 734         float v[3], intensity;
 735         unsigned char *data;
 736         R_FreeTexturePool(&r_shadow_texturepool);
 737         r_shadow_texturepool = R_AllocTexturePool();
 738         r_shadow_attenpower = r_shadow_lightattenuationpower.value;
 739         r_shadow_attenscale = r_shadow_lightattenuationscale.value;
 740 #define ATTEN2DSIZE 64
 741 #define ATTEN3DSIZE 32
 742         data = (unsigned char *)Mem_Alloc(tempmempool, max(ATTEN3DSIZE*ATTEN3DSIZE*ATTEN3DSIZE*4, ATTEN2DSIZE*ATTEN2DSIZE*4));
 743         for (y = 0;y < ATTEN2DSIZE;y++)
 744         {
 745                 for (x = 0;x < ATTEN2DSIZE;x++)
 746                 {
 747                         v[0] = ((x + 0.5f) * (2.0f / ATTEN2DSIZE) - 1.0f) * (1.0f / 0.9375);
 748                         v[1] = ((y + 0.5f) * (2.0f / ATTEN2DSIZE) - 1.0f) * (1.0f / 0.9375);
 749                         v[2] = 0;
 750                         intensity = 1.0f - sqrt(DotProduct(v, v));
 751                         if (intensity > 0)
 752                                 intensity = pow(intensity, r_shadow_attenpower) * r_shadow_attenscale * 256.0f;
 753                         d = bound(0, intensity, 255);
 754                         data[(y*ATTEN2DSIZE+x)*4+0] = d;
 755                         data[(y*ATTEN2DSIZE+x)*4+1] = d;
 756                         data[(y*ATTEN2DSIZE+x)*4+2] = d;
 757                         data[(y*ATTEN2DSIZE+x)*4+3] = d;
 758                 }
 759         }
 760         r_shadow_attenuation2dtexture = R_LoadTexture2D(r_shadow_texturepool, "attenuation2d", ATTEN2DSIZE, ATTEN2DSIZE, data, TEXTYPE_RGBA, TEXF_PRECACHE | TEXF_CLAMP | TEXF_ALPHA, NULL);
 761         if (r_shadow_texture3d.integer)
 762         {
 763                 for (z = 0;z < ATTEN3DSIZE;z++)
 764                 {
 765                         for (y = 0;y < ATTEN3DSIZE;y++)
 766                         {
 767                                 for (x = 0;x < ATTEN3DSIZE;x++)
 768                                 {
 769                                         v[0] = ((x + 0.5f) * (2.0f / ATTEN3DSIZE) - 1.0f) * (1.0f / 0.9375);
 770                                         v[1] = ((y + 0.5f) * (2.0f / ATTEN3DSIZE) - 1.0f) * (1.0f / 0.9375);
 771                                         v[2] = ((z + 0.5f) * (2.0f / ATTEN3DSIZE) - 1.0f) * (1.0f / 0.9375);
 772                                         intensity = 1.0f - sqrt(DotProduct(v, v));
 773                                         if (intensity > 0)
 774                                                 intensity = pow(intensity, r_shadow_attenpower) * r_shadow_attenscale * 256.0f;
 775                                         d = bound(0, intensity, 255);
 776                                         data[((z*ATTEN3DSIZE+y)*ATTEN3DSIZE+x)*4+0] = d;
 777                                         data[((z*ATTEN3DSIZE+y)*ATTEN3DSIZE+x)*4+1] = d;
 778                                         data[((z*ATTEN3DSIZE+y)*ATTEN3DSIZE+x)*4+2] = d;
 779                                         data[((z*ATTEN3DSIZE+y)*ATTEN3DSIZE+x)*4+3] = d;
 780                                 }
 781                         }
 782                 }
 783                 r_shadow_attenuation3dtexture = R_LoadTexture3D(r_shadow_texturepool, "attenuation3d", ATTEN3DSIZE, ATTEN3DSIZE, ATTEN3DSIZE, data, TEXTYPE_RGBA, TEXF_PRECACHE | TEXF_CLAMP | TEXF_ALPHA, NULL);
 784         }
 785         Mem_Free(data);
 786 }
 787
 788 void R_Shadow_ValidateCvars(void)
 789 {
 790         if (r_shadow_texture3d.integer && !gl_texture3d)
 791                 Cvar_SetValueQuick(&r_shadow_texture3d, 0);
 792         if (gl_ext_stenciltwoside.integer && !gl_support_stenciltwoside)
 793                 Cvar_SetValueQuick(&gl_ext_stenciltwoside, 0);
 794 }
 795
 796 // light currently being rendered
 797 rtlight_t *r_shadow_rtlight;
 798
 799 // this is the location of the eye in entity space
 800 vec3_t r_shadow_entityeyeorigin;
 801 // this is the location of the light in entity space
 802 vec3_t r_shadow_entitylightorigin;
 803 // this transforms entity coordinates to light filter cubemap coordinates
 804 // (also often used for other purposes)
 805 matrix4x4_t r_shadow_entitytolight;
 806 // based on entitytolight this transforms -1 to +1 to 0 to 1 for purposes
 807 // of attenuation texturing in full 3D (Z result often ignored)
 808 matrix4x4_t r_shadow_entitytoattenuationxyz;
 809 // this transforms only the Z to S, and T is always 0.5
 810 matrix4x4_t r_shadow_entitytoattenuationz;
 811
 812 void R_Shadow_RenderMode_Begin(void)
 813 {
 814         rmeshstate_t m;
 815
 816         R_Shadow_ValidateCvars();
 817
 818         if (!r_shadow_attenuation2dtexture
 819          || (!r_shadow_attenuation3dtexture && r_shadow_texture3d.integer)
 820          || r_shadow_lightattenuationpower.value != r_shadow_attenpower
 821          || r_shadow_lightattenuationscale.value != r_shadow_attenscale)
 822                 R_Shadow_MakeTextures();
 823
 824         memset(&m, 0, sizeof(m));
 825         R_Mesh_State(&m);
 826         GL_BlendFunc(GL_ONE, GL_ZERO);
 827         GL_DepthMask(false);
 828         GL_DepthTest(true);
 829         GL_Color(0, 0, 0, 1);
 830         qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
 831         qglEnable(GL_CULL_FACE);
 832         GL_Scissor(r_view_x, r_view_y, r_view_width, r_view_height);
 833
 834         r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
 835
 836         if (gl_ext_stenciltwoside.integer)
 837                 r_shadow_shadowingrendermode = R_SHADOW_RENDERMODE_STENCILTWOSIDE;
 838         else
 839                 r_shadow_shadowingrendermode = R_SHADOW_RENDERMODE_STENCIL;
 840
 841         if (r_glsl.integer && gl_support_fragment_shader)
 842                 r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_GLSL;
 843         else if (gl_dot3arb && gl_texturecubemap && r_textureunits.integer >= 2 && gl_combine.integer && gl_stencil)
 844                 r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_DOT3;
 845         else
 846                 r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_VERTEX;
 847 }
 848
 849 void R_Shadow_RenderMode_ActiveLight(rtlight_t *rtlight)
 850 {
 851         r_shadow_rtlight = rtlight;
 852 }
 853
 854 void R_Shadow_RenderMode_Reset(void)
 855 {
 856         rmeshstate_t m;
 857         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_LIGHT_GLSL)
 858         {
 859                 qglUseProgramObjectARB(0);
 860                 // HACK HACK HACK: work around for bug in NVIDIAI 6xxx drivers that causes GL_OUT_OF_MEMORY and/or software rendering
 861                 qglBegin(GL_TRIANGLES);
 862                 qglEnd();
 863                 CHECKGLERROR
 864         }
 865         else if (r_shadow_rendermode == R_SHADOW_RENDERMODE_STENCILTWOSIDE)
 866                 qglDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);
 867         memset(&m, 0, sizeof(m));
 868         R_Mesh_State(&m);
 869 }
 870
 871 void R_Shadow_RenderMode_StencilShadowVolumes(void)
 872 {
 873         R_Shadow_RenderMode_Reset();
 874         GL_Color(1, 1, 1, 1);
 875         GL_ColorMask(0, 0, 0, 0);
 876         GL_BlendFunc(GL_ONE, GL_ZERO);
 877         GL_DepthMask(false);
 878         GL_DepthTest(true);
 879         if (!r_showtrispass)
 880                 qglPolygonOffset(r_shadow_shadow_polygonfactor.value, r_shadow_shadow_polygonoffset.value);
 881         //if (r_shadow_shadow_polygonoffset.value != 0)
 882         //{
 883         //      qglPolygonOffset(r_shadow_shadow_polygonfactor.value, r_shadow_shadow_polygonoffset.value);
 884         //      qglEnable(GL_POLYGON_OFFSET_FILL);
 885         //}
 886         //else
 887         //      qglDisable(GL_POLYGON_OFFSET_FILL);
 888         qglDepthFunc(GL_LESS);
 889         qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
 890         qglEnable(GL_STENCIL_TEST);
 891         qglStencilFunc(GL_ALWAYS, 128, ~0);
 892         r_shadow_rendermode = r_shadow_shadowingrendermode;
 893         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_STENCILTWOSIDE)
 894         {
 895                 qglDisable(GL_CULL_FACE);
 896                 qglEnable(GL_STENCIL_TEST_TWO_SIDE_EXT);
 897                 qglActiveStencilFaceEXT(GL_BACK); // quake is backwards, this is front faces
 898                 qglStencilMask(~0);
 899                 qglStencilOp(GL_KEEP, GL_INCR, GL_KEEP);
 900                 qglActiveStencilFaceEXT(GL_FRONT); // quake is backwards, this is back faces
 901                 qglStencilMask(~0);
 902                 qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);
 903         }
 904         else
 905         {
 906                 qglEnable(GL_CULL_FACE);
 907                 qglStencilMask(~0);
 908                 // this is changed by every shadow render so its value here is unimportant
 909                 qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
 910         }
 911         GL_Clear(GL_STENCIL_BUFFER_BIT);
 912         renderstats.lights_clears++;
 913 }
 914
 915 void R_Shadow_RenderMode_Lighting(qboolean stenciltest, qboolean transparent)
 916 {
 917         R_Shadow_RenderMode_Reset();
 918         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 919         GL_DepthMask(false);
 920         GL_DepthTest(true);
 921         if (!r_showtrispass)
 922                 qglPolygonOffset(0, 0);
 923         //qglDisable(GL_POLYGON_OFFSET_FILL);
 924         GL_Color(1, 1, 1, 1);
 925         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
 926         if (transparent)
 927                 qglDepthFunc(GL_LEQUAL);
 928         else
 929                 qglDepthFunc(GL_EQUAL);
 930         qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
 931         qglEnable(GL_CULL_FACE);
 932         if (stenciltest)
 933                 qglEnable(GL_STENCIL_TEST);
 934         else
 935                 qglDisable(GL_STENCIL_TEST);
 936         qglStencilMask(~0);
 937         qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
 938         // only draw light where this geometry was already rendered AND the
 939         // stencil is 128 (values other than this mean shadow)
 940         qglStencilFunc(GL_EQUAL, 128, ~0);
 941         r_shadow_rendermode = r_shadow_lightingrendermode;
 942         // do global setup needed for the chosen lighting mode
 943         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_LIGHT_GLSL)
 944         {
 945                 R_Mesh_TexBind(0, R_GetTexture(r_texture_blanknormalmap)); // normal
 946                 R_Mesh_TexBind(1, R_GetTexture(r_texture_white)); // diffuse
 947                 R_Mesh_TexBind(2, R_GetTexture(r_texture_white)); // gloss
 948                 R_Mesh_TexBindCubeMap(3, R_GetTexture(r_shadow_rtlight->currentcubemap)); // light filter
 949                 R_Mesh_TexBind(4, R_GetTexture(r_texture_fogattenuation)); // fog
 950                 R_Mesh_TexBind(5, R_GetTexture(r_texture_white)); // pants
 951                 R_Mesh_TexBind(6, R_GetTexture(r_texture_white)); // shirt
 952                 //R_Mesh_TexMatrix(3, r_shadow_entitytolight); // light filter matrix
 953                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 954                 GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 0);
 955                 CHECKGLERROR
 956         }
 957 }
 958
 959 void R_Shadow_RenderMode_VisibleShadowVolumes(void)
 960 {
 961         R_Shadow_RenderMode_Reset();
 962         GL_BlendFunc(GL_ONE, GL_ONE);
 963         GL_DepthMask(false);
 964         GL_DepthTest(!r_showdisabledepthtest.integer);
 965         if (!r_showtrispass)
 966                 qglPolygonOffset(0, 0);
 967         GL_Color(0.0, 0.0125, 0.1, 1);
 968         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
 969         qglDepthFunc(GL_GEQUAL);
 970         qglCullFace(GL_FRONT); // this culls back
 971         qglDisable(GL_CULL_FACE);
 972         qglDisable(GL_STENCIL_TEST);
 973         r_shadow_rendermode = R_SHADOW_RENDERMODE_VISIBLEVOLUMES;
 974 }
 975
 976 void R_Shadow_RenderMode_VisibleLighting(qboolean stenciltest, qboolean transparent)
 977 {
 978         R_Shadow_RenderMode_Reset();
 979         GL_BlendFunc(GL_ONE, GL_ONE);
 980         GL_DepthMask(false);
 981         GL_DepthTest(!r_showdisabledepthtest.integer);
 982         if (!r_showtrispass)
 983                 qglPolygonOffset(0, 0);
 984         GL_Color(0.1, 0.0125, 0, 1);
 985         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
 986         if (transparent)
 987                 qglDepthFunc(GL_LEQUAL);
 988         else
 989                 qglDepthFunc(GL_EQUAL);
 990         qglCullFace(GL_FRONT); // this culls back
 991         qglEnable(GL_CULL_FACE);
 992         if (stenciltest)
 993                 qglEnable(GL_STENCIL_TEST);
 994         else
 995                 qglDisable(GL_STENCIL_TEST);
 996         r_shadow_rendermode = R_SHADOW_RENDERMODE_VISIBLELIGHTING;
 997 }
 998
 999 void R_Shadow_RenderMode_End(void)
1000 {
1001         R_Shadow_RenderMode_Reset();
1002         R_Shadow_RenderMode_ActiveLight(NULL);
1003         GL_BlendFunc(GL_ONE, GL_ZERO);
1004         GL_DepthMask(true);
1005         GL_DepthTest(true);
1006         if (!r_showtrispass)
1007                 qglPolygonOffset(0, 0);
1008         //qglDisable(GL_POLYGON_OFFSET_FILL);
1009         GL_Color(1, 1, 1, 1);
1010         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
1011         GL_Scissor(r_view_x, r_view_y, r_view_width, r_view_height);
1012         qglDepthFunc(GL_LEQUAL);
1013         qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
1014         qglEnable(GL_CULL_FACE);
1015         qglDisable(GL_STENCIL_TEST);
1016         qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
1017         if (gl_support_stenciltwoside)
1018                 qglDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);
1019         qglStencilMask(~0);
1020         qglStencilFunc(GL_ALWAYS, 128, ~0);
1021         r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
1022 }
1023
1024 qboolean R_Shadow_ScissorForBBox(const float *mins, const float *maxs)
1025 {
1026         int i, ix1, iy1, ix2, iy2;
1027         float x1, y1, x2, y2;
1028         vec4_t v, v2;
1029         rmesh_t mesh;
1030         mplane_t planes[11];
1031         float vertex3f[256*3];
1032
1033         // if view is inside the light box, just say yes it's visible
1034         if (BoxesOverlap(r_vieworigin, r_vieworigin, mins, maxs))
1035         {
1036                 GL_Scissor(r_view_x, r_view_y, r_view_width, r_view_height);
1037                 return false;
1038         }
1039
1040         // create a temporary brush describing the area the light can affect in worldspace
1041         VectorNegate(frustum[0].normal, planes[ 0].normal);planes[ 0].dist = -frustum[0].dist;
1042         VectorNegate(frustum[1].normal, planes[ 1].normal);planes[ 1].dist = -frustum[1].dist;
1043         VectorNegate(frustum[2].normal, planes[ 2].normal);planes[ 2].dist = -frustum[2].dist;
1044         VectorNegate(frustum[3].normal, planes[ 3].normal);planes[ 3].dist = -frustum[3].dist;
1045         VectorNegate(frustum[4].normal, planes[ 4].normal);planes[ 4].dist = -frustum[4].dist;
1046         VectorSet   (planes[ 5].normal,  1, 0, 0);         planes[ 5].dist =  maxs[0];
1047         VectorSet   (planes[ 6].normal, -1, 0, 0);         planes[ 6].dist = -mins[0];
1048         VectorSet   (planes[ 7].normal, 0,  1, 0);         planes[ 7].dist =  maxs[1];
1049         VectorSet   (planes[ 8].normal, 0, -1, 0);         planes[ 8].dist = -mins[1];
1050         VectorSet   (planes[ 9].normal, 0, 0,  1);         planes[ 9].dist =  maxs[2];
1051         VectorSet   (planes[10].normal, 0, 0, -1);         planes[10].dist = -mins[2];
1052
1053         // turn the brush into a mesh
1054         memset(&mesh, 0, sizeof(rmesh_t));
1055         mesh.maxvertices = 256;
1056         mesh.vertex3f = vertex3f;
1057         mesh.epsilon2 = (1.0f / (32.0f * 32.0f));
1058         R_Mesh_AddBrushMeshFromPlanes(&mesh, 11, planes);
1059
1060         // if that mesh is empty, the light is not visible at all
1061         if (!mesh.numvertices)
1062                 return true;
1063
1064         if (!r_shadow_scissor.integer)
1065                 return false;
1066
1067         // if that mesh is not empty, check what area of the screen it covers
1068         x1 = y1 = x2 = y2 = 0;
1069         v[3] = 1.0f;
1070         for (i = 0;i < mesh.numvertices;i++)
1071         {
1072                 VectorCopy(mesh.vertex3f + i * 3, v);
1073                 GL_TransformToScreen(v, v2);
1074                 //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]);
1075                 if (i)
1076                 {
1077                         if (x1 > v2[0]) x1 = v2[0];
1078                         if (x2 < v2[0]) x2 = v2[0];
1079                         if (y1 > v2[1]) y1 = v2[1];
1080                         if (y2 < v2[1]) y2 = v2[1];
1081                 }
1082                 else
1083                 {
1084                         x1 = x2 = v2[0];
1085                         y1 = y2 = v2[1];
1086                 }
1087         }
1088
1089         // now convert the scissor rectangle to integer screen coordinates
1090         ix1 = x1 - 1.0f;
1091         iy1 = y1 - 1.0f;
1092         ix2 = x2 + 1.0f;
1093         iy2 = y2 + 1.0f;
1094         //Con_Printf("%f %f %f %f\n", x1, y1, x2, y2);
1095
1096         // clamp it to the screen
1097         if (ix1 < r_view_x) ix1 = r_view_x;
1098         if (iy1 < r_view_y) iy1 = r_view_y;
1099         if (ix2 > r_view_x + r_view_width) ix2 = r_view_x + r_view_width;
1100         if (iy2 > r_view_y + r_view_height) iy2 = r_view_y + r_view_height;
1101
1102         // if it is inside out, it's not visible
1103         if (ix2 <= ix1 || iy2 <= iy1)
1104                 return true;
1105
1106         // the light area is visible, set up the scissor rectangle
1107         GL_Scissor(ix1, vid.height - iy2, ix2 - ix1, iy2 - iy1);
1108         //qglScissor(ix1, iy1, ix2 - ix1, iy2 - iy1);
1109         //qglEnable(GL_SCISSOR_TEST);
1110         renderstats.lights_scissored++;
1111         return false;
1112 }
1113
1114 extern float *rsurface_vertex3f;
1115 extern float *rsurface_svector3f;
1116 extern float *rsurface_tvector3f;
1117 extern float *rsurface_normal3f;
1118 extern void RSurf_SetVertexPointer(const entity_render_t *ent, const texture_t *texture, const msurface_t *surface, const vec3_t modelorg, qboolean generatenormals, qboolean generatetangents);
1119
1120 static void R_Shadow_RenderSurfacesLighting_Light_Vertex_Shading(const msurface_t *surface, const float *diffusecolor, const float *ambientcolor)
1121 {
1122         int numverts = surface->num_vertices;
1123         float *vertex3f = rsurface_vertex3f + 3 * surface->num_firstvertex;
1124         float *normal3f = rsurface_normal3f + 3 * surface->num_firstvertex;
1125         float *color4f = rsurface_array_color4f + 4 * surface->num_firstvertex;
1126         float dist, dot, distintensity, shadeintensity, v[3], n[3];
1127         if (r_textureunits.integer >= 3)
1128         {
1129                 for (;numverts > 0;numverts--, vertex3f += 3, normal3f += 3, color4f += 4)
1130                 {
1131                         Matrix4x4_Transform(&r_shadow_entitytolight, vertex3f, v);
1132                         Matrix4x4_Transform3x3(&r_shadow_entitytolight, normal3f, n);
1133                         if ((dot = DotProduct(n, v)) < 0)
1134                         {
1135                                 shadeintensity = -dot / sqrt(VectorLength2(v) * VectorLength2(n));
1136                                 color4f[0] = (ambientcolor[0] + shadeintensity * diffusecolor[0]);
1137                                 color4f[1] = (ambientcolor[1] + shadeintensity * diffusecolor[1]);
1138                                 color4f[2] = (ambientcolor[2] + shadeintensity * diffusecolor[2]);
1139                                 if (fogenabled)
1140                                 {
1141                                         float f = VERTEXFOGTABLE(VectorDistance(v, r_shadow_entityeyeorigin));
1142                                         VectorScale(color4f, f, color4f);
1143                                 }
1144                         }
1145                         else
1146                                 VectorClear(color4f);
1147                         color4f[3] = 1;
1148                 }
1149         }
1150         else if (r_textureunits.integer >= 2)
1151         {
1152                 for (;numverts > 0;numverts--, vertex3f += 3, normal3f += 3, color4f += 4)
1153                 {
1154                         Matrix4x4_Transform(&r_shadow_entitytolight, vertex3f, v);
1155                         if ((dist = fabs(v[2])) < 1)
1156                         {
1157                                 distintensity = pow(1 - dist, r_shadow_attenpower) * r_shadow_attenscale;
1158                                 Matrix4x4_Transform3x3(&r_shadow_entitytolight, normal3f, n);
1159                                 if ((dot = DotProduct(n, v)) < 0)
1160                                 {
1161                                         shadeintensity = -dot / sqrt(VectorLength2(v) * VectorLength2(n));
1162                                         color4f[0] = (ambientcolor[0] + shadeintensity * diffusecolor[0]) * distintensity;
1163                                         color4f[1] = (ambientcolor[1] + shadeintensity * diffusecolor[1]) * distintensity;
1164                                         color4f[2] = (ambientcolor[2] + shadeintensity * diffusecolor[2]) * distintensity;
1165                                 }
1166                                 else
1167                                 {
1168                                         color4f[0] = ambientcolor[0] * distintensity;
1169                                         color4f[1] = ambientcolor[1] * distintensity;
1170                                         color4f[2] = ambientcolor[2] * distintensity;
1171                                 }
1172                                 if (fogenabled)
1173                                 {
1174                                         float f = VERTEXFOGTABLE(VectorDistance(v, r_shadow_entityeyeorigin));
1175                                         VectorScale(color4f, f, color4f);
1176                                 }
1177                         }
1178                         else
1179                                 VectorClear(color4f);
1180                         color4f[3] = 1;
1181                 }
1182         }
1183         else
1184         {
1185                 for (;numverts > 0;numverts--, vertex3f += 3, normal3f += 3, color4f += 4)
1186                 {
1187                         Matrix4x4_Transform(&r_shadow_entitytolight, vertex3f, v);
1188                         if ((dist = DotProduct(v, v)) < 1)
1189                         {
1190                                 dist = sqrt(dist);
1191                                 distintensity = pow(1 - dist, r_shadow_attenpower) * r_shadow_attenscale;
1192                                 Matrix4x4_Transform3x3(&r_shadow_entitytolight, normal3f, n);
1193                                 if ((dot = DotProduct(n, v)) < 0)
1194                                 {
1195                                         shadeintensity = -dot / sqrt(VectorLength2(v) * VectorLength2(n));
1196                                         color4f[0] = (ambientcolor[0] + shadeintensity * diffusecolor[0]) * distintensity;
1197                                         color4f[1] = (ambientcolor[1] + shadeintensity * diffusecolor[1]) * distintensity;
1198                                         color4f[2] = (ambientcolor[2] + shadeintensity * diffusecolor[2]) * distintensity;
1199                                 }
1200                                 else
1201                                 {
1202                                         color4f[0] = ambientcolor[0] * distintensity;
1203                                         color4f[1] = ambientcolor[1] * distintensity;
1204                                         color4f[2] = ambientcolor[2] * distintensity;
1205                                 }
1206                                 if (fogenabled)
1207                                 {
1208                                         float f = VERTEXFOGTABLE(VectorDistance(v, r_shadow_entityeyeorigin));
1209                                         VectorScale(color4f, f, color4f);
1210                                 }
1211                         }
1212                         else
1213                                 VectorClear(color4f);
1214                         color4f[3] = 1;
1215                 }
1216         }
1217 }
1218
1219 // TODO: use glTexGen instead of feeding vertices to texcoordpointer?
1220
1221 static void R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(float *out3f, int numverts, const float *vertex3f, const float *svector3f, const float *tvector3f, const float *normal3f, const vec3_t relativelightorigin)
1222 {
1223         int i;
1224         float lightdir[3];
1225         for (i = 0;i < numverts;i++, vertex3f += 3, svector3f += 3, tvector3f += 3, normal3f += 3, out3f += 3)
1226         {
1227                 VectorSubtract(relativelightorigin, vertex3f, lightdir);
1228                 // the cubemap normalizes this for us
1229                 out3f[0] = DotProduct(svector3f, lightdir);
1230                 out3f[1] = DotProduct(tvector3f, lightdir);
1231                 out3f[2] = DotProduct(normal3f, lightdir);
1232         }
1233 }
1234
1235 static void R_Shadow_GenTexCoords_Specular_NormalCubeMap(float *out3f, int numverts, const float *vertex3f, const float *svector3f, const float *tvector3f, const float *normal3f, const vec3_t relativelightorigin, const vec3_t relativeeyeorigin)
1236 {
1237         int i;
1238         float lightdir[3], eyedir[3], halfdir[3];
1239         for (i = 0;i < numverts;i++, vertex3f += 3, svector3f += 3, tvector3f += 3, normal3f += 3, out3f += 3)
1240         {
1241                 VectorSubtract(relativelightorigin, vertex3f, lightdir);
1242                 VectorNormalize(lightdir);
1243                 VectorSubtract(relativeeyeorigin, vertex3f, eyedir);
1244                 VectorNormalize(eyedir);
1245                 VectorAdd(lightdir, eyedir, halfdir);
1246                 // the cubemap normalizes this for us
1247                 out3f[0] = DotProduct(svector3f, halfdir);
1248                 out3f[1] = DotProduct(tvector3f, halfdir);
1249                 out3f[2] = DotProduct(normal3f, halfdir);
1250         }
1251 }
1252
1253 static void R_Shadow_RenderSurfacesLighting_VisibleLighting(const entity_render_t *ent, const texture_t *texture, int numsurfaces, msurface_t **surfacelist, 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 specularscale, qboolean dopants, qboolean doshirt)
1254 {
1255         // used to display how many times a surface is lit for level design purposes
1256         int surfacelistindex;
1257         rmeshstate_t m;
1258         GL_Color(0.1, 0.025, 0, 1);
1259         memset(&m, 0, sizeof(m));
1260         R_Mesh_State(&m);
1261         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1262         {
1263                 const msurface_t *surface = surfacelist[surfacelistindex];
1264                 RSurf_SetVertexPointer(ent, texture, surface, r_shadow_entityeyeorigin, false, false);
1265                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1266                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle);
1267                 GL_LockArrays(0, 0);
1268         }
1269 }
1270
1271 static void R_Shadow_RenderSurfacesLighting_Light_GLSL(const entity_render_t *ent, const texture_t *texture, int numsurfaces, msurface_t **surfacelist, 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 specularscale, qboolean dopants, qboolean doshirt)
1272 {
1273         // ARB2 GLSL shader path (GFFX5200, Radeon 9500)
1274         int surfacelistindex;
1275         R_SetupSurfaceShader(ent, texture, r_shadow_entityeyeorigin, lightcolorbase, false);
1276         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1277         {
1278                 const msurface_t *surface = surfacelist[surfacelistindex];
1279                 const int *elements = surface->groupmesh->data_element3i + surface->num_firsttriangle * 3;
1280                 RSurf_SetVertexPointer(ent, texture, surface, r_shadow_entityeyeorigin, false, true);
1281                 R_Mesh_TexCoordPointer(0, 2, surface->groupmesh->data_texcoordtexture2f);
1282                 R_Mesh_TexCoordPointer(1, 3, rsurface_svector3f);
1283                 R_Mesh_TexCoordPointer(2, 3, rsurface_tvector3f);
1284                 R_Mesh_TexCoordPointer(3, 3, rsurface_normal3f);
1285                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1286                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1287                 GL_LockArrays(0, 0);
1288         }
1289 }
1290
1291 static void R_Shadow_RenderSurfacesLighting_Light_Dot3_AmbientPass(const entity_render_t *ent, const texture_t *texture, const msurface_t *surface, const vec3_t lightcolorbase, rtexture_t *basetexture, float colorscale)
1292 {
1293         int renders;
1294         float color2[3];
1295         rmeshstate_t m;
1296         const int *elements = surface->groupmesh->data_element3i + surface->num_firsttriangle * 3;
1297         GL_Color(1,1,1,1);
1298         // colorscale accounts for how much we multiply the brightness
1299         // during combine.
1300         //
1301         // mult is how many times the final pass of the lighting will be
1302         // performed to get more brightness than otherwise possible.
1303         //
1304         // Limit mult to 64 for sanity sake.
1305         if (r_shadow_texture3d.integer && r_shadow_rtlight->currentcubemap != r_texture_whitecube && r_textureunits.integer >= 4)
1306         {
1307                 // 3 3D combine path (Geforce3, Radeon 8500)
1308                 memset(&m, 0, sizeof(m));
1309                 m.pointer_vertex = rsurface_vertex3f;
1310                 m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
1311                 m.pointer_texcoord3f[0] = rsurface_vertex3f;
1312                 m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
1313                 m.tex[1] = R_GetTexture(basetexture);
1314                 m.pointer_texcoord[1] = surface->groupmesh->data_texcoordtexture2f;
1315                 m.texmatrix[1] = texture->currenttexmatrix;
1316                 m.texcubemap[2] = R_GetTexture(r_shadow_rtlight->currentcubemap);
1317                 m.pointer_texcoord3f[2] = rsurface_vertex3f;
1318                 m.texmatrix[2] = r_shadow_entitytolight;
1319                 GL_BlendFunc(GL_ONE, GL_ONE);
1320         }
1321         else if (r_shadow_texture3d.integer && r_shadow_rtlight->currentcubemap == r_texture_whitecube && r_textureunits.integer >= 2)
1322         {
1323                 // 2 3D combine path (Geforce3, original Radeon)
1324                 memset(&m, 0, sizeof(m));
1325                 m.pointer_vertex = rsurface_vertex3f;
1326                 m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
1327                 m.pointer_texcoord3f[0] = rsurface_vertex3f;
1328                 m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
1329                 m.tex[1] = R_GetTexture(basetexture);
1330                 m.pointer_texcoord[1] = surface->groupmesh->data_texcoordtexture2f;
1331                 m.texmatrix[1] = texture->currenttexmatrix;
1332                 GL_BlendFunc(GL_ONE, GL_ONE);
1333         }
1334         else if (r_textureunits.integer >= 4 && r_shadow_rtlight->currentcubemap != r_texture_whitecube)
1335         {
1336                 // 4 2D combine path (Geforce3, Radeon 8500)
1337                 memset(&m, 0, sizeof(m));
1338                 m.pointer_vertex = rsurface_vertex3f;
1339                 m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
1340                 m.pointer_texcoord3f[0] = rsurface_vertex3f;
1341                 m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
1342                 m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
1343                 m.pointer_texcoord3f[1] = rsurface_vertex3f;
1344                 m.texmatrix[1] = r_shadow_entitytoattenuationz;
1345                 m.tex[2] = R_GetTexture(basetexture);
1346                 m.pointer_texcoord[2] = surface->groupmesh->data_texcoordtexture2f;
1347                 m.texmatrix[2] = texture->currenttexmatrix;
1348                 if (r_shadow_rtlight->currentcubemap != r_texture_whitecube)
1349                 {
1350                         m.texcubemap[3] = R_GetTexture(r_shadow_rtlight->currentcubemap);
1351                         m.pointer_texcoord3f[3] = rsurface_vertex3f;
1352                         m.texmatrix[3] = r_shadow_entitytolight;
1353                 }
1354                 GL_BlendFunc(GL_ONE, GL_ONE);
1355         }
1356         else if (r_textureunits.integer >= 3 && r_shadow_rtlight->currentcubemap == r_texture_whitecube)
1357         {
1358                 // 3 2D combine path (Geforce3, original Radeon)
1359                 memset(&m, 0, sizeof(m));
1360                 m.pointer_vertex = rsurface_vertex3f;
1361                 m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
1362                 m.pointer_texcoord3f[0] = rsurface_vertex3f;
1363                 m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
1364                 m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
1365                 m.pointer_texcoord3f[1] = rsurface_vertex3f;
1366                 m.texmatrix[1] = r_shadow_entitytoattenuationz;
1367                 m.tex[2] = R_GetTexture(basetexture);
1368                 m.pointer_texcoord[2] = surface->groupmesh->data_texcoordtexture2f;
1369                 m.texmatrix[2] = texture->currenttexmatrix;
1370                 GL_BlendFunc(GL_ONE, GL_ONE);
1371         }
1372         else
1373         {
1374                 // 2/2/2 2D combine path (any dot3 card)
1375                 memset(&m, 0, sizeof(m));
1376                 m.pointer_vertex = rsurface_vertex3f;
1377                 m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
1378                 m.pointer_texcoord3f[0] = rsurface_vertex3f;
1379                 m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
1380                 m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
1381                 m.pointer_texcoord3f[1] = rsurface_vertex3f;
1382                 m.texmatrix[1] = r_shadow_entitytoattenuationz;
1383                 R_Mesh_State(&m);
1384                 GL_ColorMask(0,0,0,1);
1385                 GL_BlendFunc(GL_ONE, GL_ZERO);
1386                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1387                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1388                 GL_LockArrays(0, 0);
1389
1390                 memset(&m, 0, sizeof(m));
1391                 m.pointer_vertex = rsurface_vertex3f;
1392                 m.tex[0] = R_GetTexture(basetexture);
1393                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1394                 m.texmatrix[0] = texture->currenttexmatrix;
1395                 if (r_shadow_rtlight->currentcubemap != r_texture_whitecube)
1396                 {
1397                         m.texcubemap[1] = R_GetTexture(r_shadow_rtlight->currentcubemap);
1398                         m.pointer_texcoord3f[1] = rsurface_vertex3f;
1399                         m.texmatrix[1] = r_shadow_entitytolight;
1400                 }
1401                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
1402         }
1403         // this final code is shared
1404         R_Mesh_State(&m);
1405         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 0);
1406         VectorScale(lightcolorbase, colorscale, color2);
1407         GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1408         for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
1409         {
1410                 GL_Color(bound(0, color2[0], 1), bound(0, color2[1], 1), bound(0, color2[2], 1), 1);
1411                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1412         }
1413         GL_LockArrays(0, 0);
1414 }
1415
1416 static void R_Shadow_RenderSurfacesLighting_Light_Dot3_DiffusePass(const entity_render_t *ent, const texture_t *texture, const msurface_t *surface, const vec3_t lightcolorbase, rtexture_t *basetexture, rtexture_t *normalmaptexture, float colorscale)
1417 {
1418         int renders;
1419         float color2[3];
1420         rmeshstate_t m;
1421         const int *elements = surface->groupmesh->data_element3i + surface->num_firsttriangle * 3;
1422         GL_Color(1,1,1,1);
1423         // colorscale accounts for how much we multiply the brightness
1424         // during combine.
1425         //
1426         // mult is how many times the final pass of the lighting will be
1427         // performed to get more brightness than otherwise possible.
1428         //
1429         // Limit mult to 64 for sanity sake.
1430         if (r_shadow_texture3d.integer && r_textureunits.integer >= 4)
1431         {
1432                 // 3/2 3D combine path (Geforce3, Radeon 8500)
1433                 memset(&m, 0, sizeof(m));
1434                 m.pointer_vertex = rsurface_vertex3f;
1435                 m.tex[0] = R_GetTexture(normalmaptexture);
1436                 m.texcombinergb[0] = GL_REPLACE;
1437                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1438                 m.texmatrix[0] = texture->currenttexmatrix;
1439                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
1440                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
1441                 m.pointer_texcoord3f[1] = rsurface_array_texcoord3f;
1442                 R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(rsurface_array_texcoord3f + 3 * surface->num_firstvertex, surface->num_vertices, rsurface_vertex3f + 3 * surface->num_firstvertex, rsurface_svector3f + 3 * surface->num_firstvertex, rsurface_tvector3f + 3 * surface->num_firstvertex, rsurface_normal3f + 3 * surface->num_firstvertex, r_shadow_entitylightorigin);
1443                 m.tex3d[2] = R_GetTexture(r_shadow_attenuation3dtexture);
1444                 m.pointer_texcoord3f[2] = rsurface_vertex3f;
1445                 m.texmatrix[2] = r_shadow_entitytoattenuationxyz;
1446                 R_Mesh_State(&m);
1447                 GL_ColorMask(0,0,0,1);
1448                 GL_BlendFunc(GL_ONE, GL_ZERO);
1449                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1450                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1451                 GL_LockArrays(0, 0);
1452
1453                 memset(&m, 0, sizeof(m));
1454                 m.pointer_vertex = rsurface_vertex3f;
1455                 m.tex[0] = R_GetTexture(basetexture);
1456                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1457                 m.texmatrix[0] = texture->currenttexmatrix;
1458                 if (r_shadow_rtlight->currentcubemap != r_texture_whitecube)
1459                 {
1460                         m.texcubemap[1] = R_GetTexture(r_shadow_rtlight->currentcubemap);
1461                         m.pointer_texcoord3f[1] = rsurface_vertex3f;
1462                         m.texmatrix[1] = r_shadow_entitytolight;
1463                 }
1464                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
1465         }
1466         else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && r_shadow_rtlight->currentcubemap != r_texture_whitecube)
1467         {
1468                 // 1/2/2 3D combine path (original Radeon)
1469                 memset(&m, 0, sizeof(m));
1470                 m.pointer_vertex = rsurface_vertex3f;
1471                 m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
1472                 m.pointer_texcoord3f[0] = rsurface_vertex3f;
1473                 m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
1474                 R_Mesh_State(&m);
1475                 GL_ColorMask(0,0,0,1);
1476                 GL_BlendFunc(GL_ONE, GL_ZERO);
1477                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1478                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1479                 GL_LockArrays(0, 0);
1480
1481                 memset(&m, 0, sizeof(m));
1482                 m.pointer_vertex = rsurface_vertex3f;
1483                 m.tex[0] = R_GetTexture(normalmaptexture);
1484                 m.texcombinergb[0] = GL_REPLACE;
1485                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1486                 m.texmatrix[0] = texture->currenttexmatrix;
1487                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
1488                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
1489                 m.pointer_texcoord3f[1] = rsurface_array_texcoord3f;
1490                 R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(rsurface_array_texcoord3f + 3 * surface->num_firstvertex, surface->num_vertices, rsurface_vertex3f + 3 * surface->num_firstvertex, rsurface_svector3f + 3 * surface->num_firstvertex, rsurface_tvector3f + 3 * surface->num_firstvertex, rsurface_normal3f + 3 * surface->num_firstvertex, r_shadow_entitylightorigin);
1491                 R_Mesh_State(&m);
1492                 GL_BlendFunc(GL_DST_ALPHA, GL_ZERO);
1493                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1494                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1495                 GL_LockArrays(0, 0);
1496
1497                 memset(&m, 0, sizeof(m));
1498                 m.pointer_vertex = rsurface_vertex3f;
1499                 m.tex[0] = R_GetTexture(basetexture);
1500                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1501                 m.texmatrix[0] = texture->currenttexmatrix;
1502                 if (r_shadow_rtlight->currentcubemap != r_texture_whitecube)
1503                 {
1504                         m.texcubemap[1] = R_GetTexture(r_shadow_rtlight->currentcubemap);
1505                         m.pointer_texcoord3f[1] = rsurface_vertex3f;
1506                         m.texmatrix[1] = r_shadow_entitytolight;
1507                 }
1508                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
1509         }
1510         else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && r_shadow_rtlight->currentcubemap == r_texture_whitecube)
1511         {
1512                 // 2/2 3D combine path (original Radeon)
1513                 memset(&m, 0, sizeof(m));
1514                 m.pointer_vertex = rsurface_vertex3f;
1515                 m.tex[0] = R_GetTexture(normalmaptexture);
1516                 m.texcombinergb[0] = GL_REPLACE;
1517                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1518                 m.texmatrix[0] = texture->currenttexmatrix;
1519                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
1520                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
1521                 m.pointer_texcoord3f[1] = rsurface_array_texcoord3f;
1522                 R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(rsurface_array_texcoord3f + 3 * surface->num_firstvertex, surface->num_vertices, rsurface_vertex3f + 3 * surface->num_firstvertex, rsurface_svector3f + 3 * surface->num_firstvertex, rsurface_tvector3f + 3 * surface->num_firstvertex, rsurface_normal3f + 3 * surface->num_firstvertex, r_shadow_entitylightorigin);
1523                 R_Mesh_State(&m);
1524                 GL_ColorMask(0,0,0,1);
1525                 GL_BlendFunc(GL_ONE, GL_ZERO);
1526                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1527                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1528                 GL_LockArrays(0, 0);
1529
1530                 memset(&m, 0, sizeof(m));
1531                 m.pointer_vertex = rsurface_vertex3f;
1532                 m.tex[0] = R_GetTexture(basetexture);
1533                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1534                 m.texmatrix[0] = texture->currenttexmatrix;
1535                 m.tex3d[1] = R_GetTexture(r_shadow_attenuation3dtexture);
1536                 m.pointer_texcoord3f[1] = rsurface_vertex3f;
1537                 m.texmatrix[1] = r_shadow_entitytoattenuationxyz;
1538                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
1539         }
1540         else if (r_textureunits.integer >= 4)
1541         {
1542                 // 4/2 2D combine path (Geforce3, Radeon 8500)
1543                 memset(&m, 0, sizeof(m));
1544                 m.pointer_vertex = rsurface_vertex3f;
1545                 m.tex[0] = R_GetTexture(normalmaptexture);
1546                 m.texcombinergb[0] = GL_REPLACE;
1547                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1548                 m.texmatrix[0] = texture->currenttexmatrix;
1549                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
1550                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
1551                 m.pointer_texcoord3f[1] = rsurface_array_texcoord3f;
1552                 R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(rsurface_array_texcoord3f + 3 * surface->num_firstvertex, surface->num_vertices, rsurface_vertex3f + 3 * surface->num_firstvertex, rsurface_svector3f + 3 * surface->num_firstvertex, rsurface_tvector3f + 3 * surface->num_firstvertex, rsurface_normal3f + 3 * surface->num_firstvertex, r_shadow_entitylightorigin);
1553                 m.tex[2] = R_GetTexture(r_shadow_attenuation2dtexture);
1554                 m.pointer_texcoord3f[2] = rsurface_vertex3f;
1555                 m.texmatrix[2] = r_shadow_entitytoattenuationxyz;
1556                 m.tex[3] = R_GetTexture(r_shadow_attenuation2dtexture);
1557                 m.pointer_texcoord3f[3] = rsurface_vertex3f;
1558                 m.texmatrix[3] = r_shadow_entitytoattenuationz;
1559                 R_Mesh_State(&m);
1560                 GL_ColorMask(0,0,0,1);
1561                 GL_BlendFunc(GL_ONE, GL_ZERO);
1562                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1563                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1564                 GL_LockArrays(0, 0);
1565
1566                 memset(&m, 0, sizeof(m));
1567                 m.pointer_vertex = rsurface_vertex3f;
1568                 m.tex[0] = R_GetTexture(basetexture);
1569                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1570                 m.texmatrix[0] = texture->currenttexmatrix;
1571                 if (r_shadow_rtlight->currentcubemap != r_texture_whitecube)
1572                 {
1573                         m.texcubemap[1] = R_GetTexture(r_shadow_rtlight->currentcubemap);
1574                         m.pointer_texcoord3f[1] = rsurface_vertex3f;
1575                         m.texmatrix[1] = r_shadow_entitytolight;
1576                 }
1577                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
1578         }
1579         else
1580         {
1581                 // 2/2/2 2D combine path (any dot3 card)
1582                 memset(&m, 0, sizeof(m));
1583                 m.pointer_vertex = rsurface_vertex3f;
1584                 m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
1585                 m.pointer_texcoord3f[0] = rsurface_vertex3f;
1586                 m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
1587                 m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
1588                 m.pointer_texcoord3f[1] = rsurface_vertex3f;
1589                 m.texmatrix[1] = r_shadow_entitytoattenuationz;
1590                 R_Mesh_State(&m);
1591                 GL_ColorMask(0,0,0,1);
1592                 GL_BlendFunc(GL_ONE, GL_ZERO);
1593                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1594                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1595                 GL_LockArrays(0, 0);
1596
1597                 memset(&m, 0, sizeof(m));
1598                 m.pointer_vertex = rsurface_vertex3f;
1599                 m.tex[0] = R_GetTexture(normalmaptexture);
1600                 m.texcombinergb[0] = GL_REPLACE;
1601                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1602                 m.texmatrix[0] = texture->currenttexmatrix;
1603                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
1604                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
1605                 m.pointer_texcoord3f[1] = rsurface_array_texcoord3f;
1606                 R_Shadow_GenTexCoords_Diffuse_NormalCubeMap(rsurface_array_texcoord3f + 3 * surface->num_firstvertex, surface->num_vertices, rsurface_vertex3f + 3 * surface->num_firstvertex, rsurface_svector3f + 3 * surface->num_firstvertex, rsurface_tvector3f + 3 * surface->num_firstvertex, rsurface_normal3f + 3 * surface->num_firstvertex, r_shadow_entitylightorigin);
1607                 R_Mesh_State(&m);
1608                 GL_BlendFunc(GL_DST_ALPHA, GL_ZERO);
1609                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1610                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1611                 GL_LockArrays(0, 0);
1612
1613                 memset(&m, 0, sizeof(m));
1614                 m.pointer_vertex = rsurface_vertex3f;
1615                 m.tex[0] = R_GetTexture(basetexture);
1616                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1617                 m.texmatrix[0] = texture->currenttexmatrix;
1618                 if (r_shadow_rtlight->currentcubemap != r_texture_whitecube)
1619                 {
1620                         m.texcubemap[1] = R_GetTexture(r_shadow_rtlight->currentcubemap);
1621                         m.pointer_texcoord3f[1] = rsurface_vertex3f;
1622                         m.texmatrix[1] = r_shadow_entitytolight;
1623                 }
1624                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
1625         }
1626         // this final code is shared
1627         R_Mesh_State(&m);
1628         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 0);
1629         VectorScale(lightcolorbase, colorscale, color2);
1630         GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1631         for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
1632         {
1633                 GL_Color(bound(0, color2[0], 1), bound(0, color2[1], 1), bound(0, color2[2], 1), 1);
1634                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1635         }
1636         GL_LockArrays(0, 0);
1637 }
1638
1639 static void R_Shadow_RenderSurfacesLighting_Light_Dot3_SpecularPass(const entity_render_t *ent, const texture_t *texture, const msurface_t *surface, const vec3_t lightcolorbase, rtexture_t *glosstexture, rtexture_t *normalmaptexture, float colorscale)
1640 {
1641         int renders;
1642         float color2[3];
1643         rmeshstate_t m;
1644         const int *elements = surface->groupmesh->data_element3i + surface->num_firsttriangle * 3;
1645         // FIXME: detect blendsquare!
1646         //if (!gl_support_blendsquare)
1647         //      return;
1648         GL_Color(1,1,1,1);
1649         if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && r_shadow_rtlight->currentcubemap != r_texture_whitecube /* && gl_support_blendsquare*/) // FIXME: detect blendsquare!
1650         {
1651                 // 2/0/0/1/2 3D combine blendsquare path
1652                 memset(&m, 0, sizeof(m));
1653                 m.pointer_vertex = rsurface_vertex3f;
1654                 m.tex[0] = R_GetTexture(normalmaptexture);
1655                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1656                 m.texmatrix[0] = texture->currenttexmatrix;
1657                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
1658                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
1659                 m.pointer_texcoord3f[1] = rsurface_array_texcoord3f;
1660                 R_Shadow_GenTexCoords_Specular_NormalCubeMap(rsurface_array_texcoord3f + 3 * surface->num_firstvertex, surface->num_vertices, rsurface_vertex3f + 3 * surface->num_firstvertex, rsurface_svector3f + 3 * surface->num_firstvertex, rsurface_tvector3f + 3 * surface->num_firstvertex, rsurface_normal3f + 3 * surface->num_firstvertex, r_shadow_entitylightorigin, r_shadow_entityeyeorigin);
1661                 R_Mesh_State(&m);
1662                 GL_ColorMask(0,0,0,1);
1663                 // this squares the result
1664                 GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
1665                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1666                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1667                 GL_LockArrays(0, 0);
1668
1669                 memset(&m, 0, sizeof(m));
1670                 m.pointer_vertex = rsurface_vertex3f;
1671                 R_Mesh_State(&m);
1672                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1673                 // square alpha in framebuffer a few times to make it shiny
1674                 GL_BlendFunc(GL_ZERO, GL_DST_ALPHA);
1675                 // these comments are a test run through this math for intensity 0.5
1676                 // 0.5 * 0.5 = 0.25 (done by the BlendFunc earlier)
1677                 // 0.25 * 0.25 = 0.0625 (this is another pass)
1678                 // 0.0625 * 0.0625 = 0.00390625 (this is another pass)
1679                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1680                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1681                 GL_LockArrays(0, 0);
1682
1683                 memset(&m, 0, sizeof(m));
1684                 m.pointer_vertex = rsurface_vertex3f;
1685                 m.tex3d[0] = R_GetTexture(r_shadow_attenuation3dtexture);
1686                 m.pointer_texcoord3f[0] = rsurface_vertex3f;
1687                 m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
1688                 R_Mesh_State(&m);
1689                 GL_BlendFunc(GL_DST_ALPHA, GL_ZERO);
1690                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1691                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1692                 GL_LockArrays(0, 0);
1693
1694                 memset(&m, 0, sizeof(m));
1695                 m.pointer_vertex = rsurface_vertex3f;
1696                 m.tex[0] = R_GetTexture(glosstexture);
1697                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1698                 m.texmatrix[0] = texture->currenttexmatrix;
1699                 if (r_shadow_rtlight->currentcubemap != r_texture_whitecube)
1700                 {
1701                         m.texcubemap[1] = R_GetTexture(r_shadow_rtlight->currentcubemap);
1702                         m.pointer_texcoord3f[1] = rsurface_vertex3f;
1703                         m.texmatrix[1] = r_shadow_entitytolight;
1704                 }
1705                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
1706         }
1707         else if (r_shadow_texture3d.integer && r_textureunits.integer >= 2 && r_shadow_rtlight->currentcubemap == r_texture_whitecube /* && gl_support_blendsquare*/) // FIXME: detect blendsquare!
1708         {
1709                 // 2/0/0/2 3D combine blendsquare path
1710                 memset(&m, 0, sizeof(m));
1711                 m.pointer_vertex = rsurface_vertex3f;
1712                 m.tex[0] = R_GetTexture(normalmaptexture);
1713                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1714                 m.texmatrix[0] = texture->currenttexmatrix;
1715                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
1716                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
1717                 m.pointer_texcoord3f[1] = rsurface_array_texcoord3f;
1718                 R_Shadow_GenTexCoords_Specular_NormalCubeMap(rsurface_array_texcoord3f + 3 * surface->num_firstvertex, surface->num_vertices, rsurface_vertex3f + 3 * surface->num_firstvertex, rsurface_svector3f + 3 * surface->num_firstvertex, rsurface_tvector3f + 3 * surface->num_firstvertex, rsurface_normal3f + 3 * surface->num_firstvertex, r_shadow_entitylightorigin, r_shadow_entityeyeorigin);
1719                 R_Mesh_State(&m);
1720                 GL_ColorMask(0,0,0,1);
1721                 // this squares the result
1722                 GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
1723                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1724                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1725                 GL_LockArrays(0, 0);
1726
1727                 memset(&m, 0, sizeof(m));
1728                 m.pointer_vertex = rsurface_vertex3f;
1729                 R_Mesh_State(&m);
1730                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1731                 // square alpha in framebuffer a few times to make it shiny
1732                 GL_BlendFunc(GL_ZERO, GL_DST_ALPHA);
1733                 // these comments are a test run through this math for intensity 0.5
1734                 // 0.5 * 0.5 = 0.25 (done by the BlendFunc earlier)
1735                 // 0.25 * 0.25 = 0.0625 (this is another pass)
1736                 // 0.0625 * 0.0625 = 0.00390625 (this is another pass)
1737                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1738                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1739                 GL_LockArrays(0, 0);
1740
1741                 memset(&m, 0, sizeof(m));
1742                 m.pointer_vertex = rsurface_vertex3f;
1743                 m.tex[0] = R_GetTexture(glosstexture);
1744                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1745                 m.texmatrix[0] = texture->currenttexmatrix;
1746                 m.tex3d[1] = R_GetTexture(r_shadow_attenuation3dtexture);
1747                 m.pointer_texcoord3f[1] = rsurface_vertex3f;
1748                 m.texmatrix[1] = r_shadow_entitytoattenuationxyz;
1749                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
1750         }
1751         else
1752         {
1753                 // 2/0/0/2/2 2D combine blendsquare path
1754                 memset(&m, 0, sizeof(m));
1755                 m.pointer_vertex = rsurface_vertex3f;
1756                 m.tex[0] = R_GetTexture(normalmaptexture);
1757                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1758                 m.texmatrix[0] = texture->currenttexmatrix;
1759                 m.texcubemap[1] = R_GetTexture(r_texture_normalizationcube);
1760                 m.texcombinergb[1] = GL_DOT3_RGBA_ARB;
1761                 m.pointer_texcoord3f[1] = rsurface_array_texcoord3f;
1762                 R_Shadow_GenTexCoords_Specular_NormalCubeMap(rsurface_array_texcoord3f + 3 * surface->num_firstvertex, surface->num_vertices, rsurface_vertex3f + 3 * surface->num_firstvertex, rsurface_svector3f + 3 * surface->num_firstvertex, rsurface_tvector3f + 3 * surface->num_firstvertex, rsurface_normal3f + 3 * surface->num_firstvertex, r_shadow_entitylightorigin, r_shadow_entityeyeorigin);
1763                 R_Mesh_State(&m);
1764                 GL_ColorMask(0,0,0,1);
1765                 // this squares the result
1766                 GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
1767                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1768                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1769                 GL_LockArrays(0, 0);
1770
1771                 memset(&m, 0, sizeof(m));
1772                 m.pointer_vertex = rsurface_vertex3f;
1773                 R_Mesh_State(&m);
1774                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1775                 // square alpha in framebuffer a few times to make it shiny
1776                 GL_BlendFunc(GL_ZERO, GL_DST_ALPHA);
1777                 // these comments are a test run through this math for intensity 0.5
1778                 // 0.5 * 0.5 = 0.25 (done by the BlendFunc earlier)
1779                 // 0.25 * 0.25 = 0.0625 (this is another pass)
1780                 // 0.0625 * 0.0625 = 0.00390625 (this is another pass)
1781                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1782                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1783                 GL_LockArrays(0, 0);
1784
1785                 memset(&m, 0, sizeof(m));
1786                 m.pointer_vertex = rsurface_vertex3f;
1787                 m.tex[0] = R_GetTexture(r_shadow_attenuation2dtexture);
1788                 m.pointer_texcoord3f[0] = rsurface_vertex3f;
1789                 m.texmatrix[0] = r_shadow_entitytoattenuationxyz;
1790                 m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
1791                 m.pointer_texcoord3f[1] = rsurface_vertex3f;
1792                 m.texmatrix[1] = r_shadow_entitytoattenuationz;
1793                 R_Mesh_State(&m);
1794                 GL_BlendFunc(GL_DST_ALPHA, GL_ZERO);
1795                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1796                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1797                 GL_LockArrays(0, 0);
1798
1799                 memset(&m, 0, sizeof(m));
1800                 m.pointer_vertex = rsurface_vertex3f;
1801                 m.tex[0] = R_GetTexture(glosstexture);
1802                 m.pointer_texcoord[0] = surface->groupmesh->data_texcoordtexture2f;
1803                 m.texmatrix[0] = texture->currenttexmatrix;
1804                 if (r_shadow_rtlight->currentcubemap != r_texture_whitecube)
1805                 {
1806                         m.texcubemap[1] = R_GetTexture(r_shadow_rtlight->currentcubemap);
1807                         m.pointer_texcoord3f[1] = rsurface_vertex3f;
1808                         m.texmatrix[1] = r_shadow_entitytolight;
1809                 }
1810                 GL_BlendFunc(GL_DST_ALPHA, GL_ONE);
1811         }
1812         R_Mesh_State(&m);
1813         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 0);
1814         VectorScale(lightcolorbase, colorscale, color2);
1815         GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1816         for (renders = 0;renders < 64 && (color2[0] > 0 || color2[1] > 0 || color2[2] > 0);renders++, color2[0]--, color2[1]--, color2[2]--)
1817         {
1818                 GL_Color(bound(0, color2[0], 1), bound(0, color2[1], 1), bound(0, color2[2], 1), 1);
1819                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1820         }
1821         GL_LockArrays(0, 0);
1822 }
1823
1824 static void R_Shadow_RenderSurfacesLighting_Light_Dot3(const entity_render_t *ent, const texture_t *texture, int numsurfaces, msurface_t **surfacelist, 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 specularscale, qboolean dopants, qboolean doshirt)
1825 {
1826         // ARB path (any Geforce, any Radeon)
1827         int surfacelistindex;
1828         qboolean doambient = r_shadow_rtlight->ambientscale > 0;
1829         qboolean dodiffuse = r_shadow_rtlight->diffusescale > 0;
1830         qboolean dospecular = specularscale > 0;
1831         if (!doambient && !dodiffuse && !dospecular)
1832                 return;
1833         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1834         {
1835                 const msurface_t *surface = surfacelist[surfacelistindex];
1836                 RSurf_SetVertexPointer(ent, texture, surface, r_shadow_entityeyeorigin, false, true);
1837                 if (doambient)
1838                         R_Shadow_RenderSurfacesLighting_Light_Dot3_AmbientPass(ent, texture, surface, lightcolorbase, basetexture, r_shadow_rtlight->ambientscale);
1839                 if (dodiffuse)
1840                         R_Shadow_RenderSurfacesLighting_Light_Dot3_DiffusePass(ent, texture, surface, lightcolorbase, basetexture, normalmaptexture, r_shadow_rtlight->diffusescale);
1841                 if (dopants)
1842                 {
1843                         if (doambient)
1844                                 R_Shadow_RenderSurfacesLighting_Light_Dot3_AmbientPass(ent, texture, surface, lightcolorpants, pantstexture, r_shadow_rtlight->ambientscale);
1845                         if (dodiffuse)
1846                                 R_Shadow_RenderSurfacesLighting_Light_Dot3_DiffusePass(ent, texture, surface, lightcolorpants, pantstexture, normalmaptexture, r_shadow_rtlight->diffusescale);
1847                 }
1848                 if (doshirt)
1849                 {
1850                         if (doambient)
1851                                 R_Shadow_RenderSurfacesLighting_Light_Dot3_AmbientPass(ent, texture, surface, lightcolorshirt, shirttexture, r_shadow_rtlight->ambientscale);
1852                         if (dodiffuse)
1853                                 R_Shadow_RenderSurfacesLighting_Light_Dot3_DiffusePass(ent, texture, surface, lightcolorshirt, shirttexture, normalmaptexture, r_shadow_rtlight->diffusescale);
1854                 }
1855                 if (dospecular)
1856                         R_Shadow_RenderSurfacesLighting_Light_Dot3_SpecularPass(ent, texture, surface, lightcolorbase, glosstexture, normalmaptexture, specularscale);
1857         }
1858 }
1859
1860 void R_Shadow_RenderSurfacesLighting_Light_Vertex_Pass(const msurface_t *surface, vec3_t diffusecolor2, vec3_t ambientcolor2)
1861 {
1862         int renders;
1863         const int *elements = surface->groupmesh->data_element3i + surface->num_firsttriangle * 3;
1864         R_Shadow_RenderSurfacesLighting_Light_Vertex_Shading(surface, diffusecolor2, ambientcolor2);
1865         for (renders = 0;renders < 64 && (ambientcolor2[0] > renders || ambientcolor2[1] > renders || ambientcolor2[2] > renders || diffusecolor2[0] > renders || diffusecolor2[1] > renders || diffusecolor2[2] > renders);renders++)
1866         {
1867                 int i;
1868                 float *c;
1869 #if 1
1870                 // due to low fillrate on the cards this vertex lighting path is
1871                 // designed for, we manually cull all triangles that do not
1872                 // contain a lit vertex
1873                 int draw;
1874                 const int *e;
1875                 int newnumtriangles;
1876                 int *newe;
1877                 int newelements[3072];
1878                 draw = false;
1879                 newnumtriangles = 0;
1880                 newe = newelements;
1881                 for (i = 0, e = elements;i < surface->num_triangles;i++, e += 3)
1882                 {
1883                         if (newnumtriangles >= 1024)
1884                         {
1885                                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1886                                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, newnumtriangles, newelements);
1887                                 GL_LockArrays(0, 0);
1888                                 newnumtriangles = 0;
1889                                 newe = newelements;
1890                         }
1891                         if (VectorLength2(rsurface_array_color4f + e[0] * 4) + VectorLength2(rsurface_array_color4f + e[1] * 4) + VectorLength2(rsurface_array_color4f + e[2] * 4) >= 0.01)
1892                         {
1893                                 newe[0] = e[0];
1894                                 newe[1] = e[1];
1895                                 newe[2] = e[2];
1896                                 newnumtriangles++;
1897                                 newe += 3;
1898                                 draw = true;
1899                         }
1900                 }
1901                 if (newnumtriangles >= 1)
1902                 {
1903                         GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1904                         R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, newnumtriangles, newelements);
1905                         GL_LockArrays(0, 0);
1906                         draw = true;
1907                 }
1908                 if (!draw)
1909                         break;
1910 #else
1911                 for (i = 0, c = rsurface_array_color4f + 4 * surface->num_firstvertex;i < surface->num_vertices;i++, c += 4)
1912                         if (VectorLength2(c))
1913                                 goto goodpass;
1914                 break;
1915 goodpass:
1916                 GL_LockArrays(surface->num_firstvertex, surface->num_vertices);
1917                 R_Mesh_Draw(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, elements);
1918                 GL_LockArrays(0, 0);
1919 #endif
1920                 // now reduce the intensity for the next overbright pass
1921                 for (i = 0, c = rsurface_array_color4f + 4 * surface->num_firstvertex;i < surface->num_vertices;i++, c += 4)
1922                 {
1923                         c[0] = max(0, c[0] - 1);
1924                         c[1] = max(0, c[1] - 1);
1925                         c[2] = max(0, c[2] - 1);
1926                 }
1927         }
1928 }
1929
1930 static void R_Shadow_RenderSurfacesLighting_Light_Vertex(const entity_render_t *ent, const texture_t *texture, int numsurfaces, msurface_t **surfacelist, 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 specularscale, qboolean dopants, qboolean doshirt)
1931 {
1932         int surfacelistindex;
1933         float ambientcolorbase[3], diffusecolorbase[3];
1934         float ambientcolorpants[3], diffusecolorpants[3];
1935         float ambientcolorshirt[3], diffusecolorshirt[3];
1936         rmeshstate_t m;
1937         VectorScale(lightcolorbase, r_shadow_rtlight->ambientscale * 2, ambientcolorbase);
1938         VectorScale(lightcolorbase, r_shadow_rtlight->diffusescale * 2, diffusecolorbase);
1939         VectorScale(lightcolorpants, r_shadow_rtlight->ambientscale * 2, ambientcolorpants);
1940         VectorScale(lightcolorpants, r_shadow_rtlight->diffusescale * 2, diffusecolorpants);
1941         VectorScale(lightcolorshirt, r_shadow_rtlight->ambientscale * 2, ambientcolorshirt);
1942         VectorScale(lightcolorshirt, r_shadow_rtlight->diffusescale * 2, diffusecolorshirt);
1943         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1944         memset(&m, 0, sizeof(m));
1945         m.tex[0] = R_GetTexture(basetexture);
1946         if (r_textureunits.integer >= 2)
1947         {
1948                 // voodoo2
1949                 m.tex[1] = R_GetTexture(r_shadow_attenuation2dtexture);
1950                 m.texmatrix[1] = r_shadow_entitytoattenuationxyz;
1951                 if (r_textureunits.integer >= 3)
1952                 {
1953                         // Geforce3/Radeon class but not using dot3
1954                         m.tex[2] = R_GetTexture(r_shadow_attenuation2dtexture);
1955                         m.texmatrix[2] = r_shadow_entitytoattenuationz;
1956                 }
1957         }
1958         m.pointer_color = rsurface_array_color4f;
1959         R_Mesh_State(&m);
1960         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1961         {
1962                 const msurface_t *surface = surfacelist[surfacelistindex];
1963                 RSurf_SetVertexPointer(ent, texture, surface, r_shadow_entityeyeorigin, true, false);
1964                 // OpenGL 1.1 path (anything)
1965                 R_Mesh_TexCoordPointer(0, 2, surface->groupmesh->data_texcoordtexture2f);
1966                 R_Mesh_TexMatrix(0, &texture->currenttexmatrix);
1967                 if (r_textureunits.integer >= 2)
1968                 {
1969                         // voodoo2 or TNT
1970                         R_Mesh_TexCoordPointer(1, 3, rsurface_vertex3f);
1971                         if (r_textureunits.integer >= 3)
1972                         {
1973                                 // Voodoo4 or Kyro (or Geforce3/Radeon with gl_combine off)
1974                                 R_Mesh_TexCoordPointer(2, 3, rsurface_vertex3f);
1975                         }
1976                 }
1977                 R_Mesh_TexBind(0, R_GetTexture(basetexture));
1978                 R_Shadow_RenderSurfacesLighting_Light_Vertex_Pass(surface, diffusecolorbase, ambientcolorbase);
1979                 if (dopants)
1980                 {
1981                         R_Mesh_TexBind(0, R_GetTexture(pantstexture));
1982                         R_Shadow_RenderSurfacesLighting_Light_Vertex_Pass(surface, diffusecolorpants, ambientcolorpants);
1983                 }
1984                 if (doshirt)
1985                 {
1986                         R_Mesh_TexBind(0, R_GetTexture(shirttexture));
1987                         R_Shadow_RenderSurfacesLighting_Light_Vertex_Pass(surface, diffusecolorshirt, ambientcolorshirt);
1988                 }
1989         }
1990 }
1991
1992 void R_Shadow_RenderSurfacesLighting(const entity_render_t *ent, const texture_t *texture, int numsurfaces, msurface_t **surfacelist)
1993 {
1994         // FIXME: support MATERIALFLAG_NODEPTHTEST
1995         vec3_t lightcolorbase, lightcolorpants, lightcolorshirt;
1996         // calculate colors to render this texture with
1997         lightcolorbase[0] = r_shadow_rtlight->currentcolor[0] * ent->colormod[0] * texture->currentalpha;
1998         lightcolorbase[1] = r_shadow_rtlight->currentcolor[1] * ent->colormod[1] * texture->currentalpha;
1999         lightcolorbase[2] = r_shadow_rtlight->currentcolor[2] * ent->colormod[2] * texture->currentalpha;
2000         if ((r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * VectorLength2(lightcolorbase) + (r_shadow_rtlight->specularscale * texture->specularscale) * VectorLength2(lightcolorbase) < (1.0f / 1048576.0f))
2001                 return;
2002         if ((texture->textureflags & Q3TEXTUREFLAG_TWOSIDED) || (ent->flags & RENDER_NOCULLFACE))
2003                 qglDisable(GL_CULL_FACE);
2004         else
2005                 qglEnable(GL_CULL_FACE);
2006         if (texture->colormapping)
2007         {
2008                 qboolean dopants = texture->skin.pants != NULL && VectorLength2(ent->colormap_pantscolor) >= (1.0f / 1048576.0f);
2009                 qboolean doshirt = texture->skin.shirt != NULL && VectorLength2(ent->colormap_shirtcolor) >= (1.0f / 1048576.0f);
2010                 if (dopants)
2011                 {
2012                         lightcolorpants[0] = lightcolorbase[0] * ent->colormap_pantscolor[0];
2013                         lightcolorpants[1] = lightcolorbase[1] * ent->colormap_pantscolor[1];
2014                         lightcolorpants[2] = lightcolorbase[2] * ent->colormap_pantscolor[2];
2015                 }
2016                 else
2017                         VectorClear(lightcolorpants);
2018                 if (doshirt)
2019                 {
2020                         lightcolorshirt[0] = lightcolorbase[0] * ent->colormap_shirtcolor[0];
2021                         lightcolorshirt[1] = lightcolorbase[1] * ent->colormap_shirtcolor[1];
2022                         lightcolorshirt[2] = lightcolorbase[2] * ent->colormap_shirtcolor[2];
2023                 }
2024                 else
2025                         VectorClear(lightcolorshirt);
2026                 switch (r_shadow_rendermode)
2027                 {
2028                 case R_SHADOW_RENDERMODE_VISIBLELIGHTING:
2029                         R_Shadow_RenderSurfacesLighting_VisibleLighting(ent, texture, numsurfaces, surfacelist, lightcolorbase, lightcolorpants, lightcolorshirt, texture->basetexture, texture->skin.pants, texture->skin.shirt, texture->skin.nmap, texture->glosstexture, r_shadow_rtlight->specularscale * texture->specularscale, dopants, doshirt);
2030                         break;
2031                 case R_SHADOW_RENDERMODE_LIGHT_GLSL:
2032                         R_Shadow_RenderSurfacesLighting_Light_GLSL(ent, texture, numsurfaces, surfacelist, lightcolorbase, lightcolorpants, lightcolorshirt, texture->basetexture, texture->skin.pants, texture->skin.shirt, texture->skin.nmap, texture->glosstexture, r_shadow_rtlight->specularscale * texture->specularscale, dopants, doshirt);
2033                         break;
2034                 case R_SHADOW_RENDERMODE_LIGHT_DOT3:
2035                         R_Shadow_RenderSurfacesLighting_Light_Dot3(ent, texture, numsurfaces, surfacelist, lightcolorbase, lightcolorpants, lightcolorshirt, texture->basetexture, texture->skin.pants, texture->skin.shirt, texture->skin.nmap, texture->glosstexture, r_shadow_rtlight->specularscale * texture->specularscale, dopants, doshirt);
2036                         break;
2037                 case R_SHADOW_RENDERMODE_LIGHT_VERTEX:
2038                         R_Shadow_RenderSurfacesLighting_Light_Vertex(ent, texture, numsurfaces, surfacelist, lightcolorbase, lightcolorpants, lightcolorshirt, texture->basetexture, texture->skin.pants, texture->skin.shirt, texture->skin.nmap, texture->glosstexture, r_shadow_rtlight->specularscale * texture->specularscale, dopants, doshirt);
2039                         break;
2040                 default:
2041                         Con_Printf("R_Shadow_RenderSurfacesLighting: unknown r_shadow_rendermode %i\n", r_shadow_rendermode);
2042                         break;
2043                 }
2044         }
2045         else
2046         {
2047                 switch (r_shadow_rendermode)
2048                 {
2049                 case R_SHADOW_RENDERMODE_VISIBLELIGHTING:
2050                         R_Shadow_RenderSurfacesLighting_VisibleLighting(ent, texture, numsurfaces, surfacelist, lightcolorbase, vec3_origin, vec3_origin, texture->basetexture, r_texture_black, r_texture_black, texture->skin.nmap, texture->glosstexture, r_shadow_rtlight->specularscale * texture->specularscale, false, false);
2051                         break;
2052                 case R_SHADOW_RENDERMODE_LIGHT_GLSL:
2053                         R_Shadow_RenderSurfacesLighting_Light_GLSL(ent, texture, numsurfaces, surfacelist, lightcolorbase, vec3_origin, vec3_origin, texture->basetexture, r_texture_black, r_texture_black, texture->skin.nmap, texture->glosstexture, r_shadow_rtlight->specularscale * texture->specularscale, false, false);
2054                         break;
2055                 case R_SHADOW_RENDERMODE_LIGHT_DOT3:
2056                         R_Shadow_RenderSurfacesLighting_Light_Dot3(ent, texture, numsurfaces, surfacelist, lightcolorbase, vec3_origin, vec3_origin, texture->basetexture, r_texture_black, r_texture_black, texture->skin.nmap, texture->glosstexture, r_shadow_rtlight->specularscale * texture->specularscale, false, false);
2057                         break;
2058                 case R_SHADOW_RENDERMODE_LIGHT_VERTEX:
2059                         R_Shadow_RenderSurfacesLighting_Light_Vertex(ent, texture, numsurfaces, surfacelist, lightcolorbase, vec3_origin, vec3_origin, texture->basetexture, r_texture_black, r_texture_black, texture->skin.nmap, texture->glosstexture, r_shadow_rtlight->specularscale * texture->specularscale, false, false);
2060                         break;
2061                 default:
2062                         Con_Printf("R_Shadow_RenderSurfacesLighting: unknown r_shadow_rendermode %i\n", r_shadow_rendermode);
2063                         break;
2064                 }
2065         }
2066 }
2067
2068 void R_RTLight_Update(dlight_t *light, int isstatic)
2069 {
2070         int j, k;
2071         float scale;
2072         rtlight_t *rtlight = &light->rtlight;
2073         R_RTLight_Uncompile(rtlight);
2074         memset(rtlight, 0, sizeof(*rtlight));
2075
2076         VectorCopy(light->origin, rtlight->shadoworigin);
2077         VectorCopy(light->color, rtlight->color);
2078         rtlight->radius = light->radius;
2079         //rtlight->cullradius = rtlight->radius;
2080         //rtlight->cullradius2 = rtlight->radius * rtlight->radius;
2081         rtlight->cullmins[0] = rtlight->shadoworigin[0] - rtlight->radius;
2082         rtlight->cullmins[1] = rtlight->shadoworigin[1] - rtlight->radius;
2083         rtlight->cullmins[2] = rtlight->shadoworigin[2] - rtlight->radius;
2084         rtlight->cullmaxs[0] = rtlight->shadoworigin[0] + rtlight->radius;
2085         rtlight->cullmaxs[1] = rtlight->shadoworigin[1] + rtlight->radius;
2086         rtlight->cullmaxs[2] = rtlight->shadoworigin[2] + rtlight->radius;
2087         rtlight->cubemapname[0] = 0;
2088         if (light->cubemapname[0])
2089                 strcpy(rtlight->cubemapname, light->cubemapname);
2090         else if (light->cubemapnum > 0)
2091                 sprintf(rtlight->cubemapname, "cubemaps/%i", light->cubemapnum);
2092         rtlight->shadow = light->shadow;
2093         rtlight->corona = light->corona;
2094         rtlight->style = light->style;
2095         rtlight->isstatic = isstatic;
2096         rtlight->coronasizescale = light->coronasizescale;
2097         rtlight->ambientscale = light->ambientscale;
2098         rtlight->diffusescale = light->diffusescale;
2099         rtlight->specularscale = light->specularscale;
2100         rtlight->flags = light->flags;
2101         Matrix4x4_Invert_Simple(&rtlight->matrix_worldtolight, &light->matrix);
2102         // ConcatScale won't work here because this needs to scale rotate and
2103         // translate, not just rotate
2104         scale = 1.0f / rtlight->radius;
2105         for (k = 0;k < 3;k++)
2106                 for (j = 0;j < 4;j++)
2107                         rtlight->matrix_worldtolight.m[k][j] *= scale;
2108 }
2109
2110 // compiles rtlight geometry
2111 // (undone by R_FreeCompiledRTLight, which R_UpdateLight calls)
2112 void R_RTLight_Compile(rtlight_t *rtlight)
2113 {
2114         int shadowmeshes, shadowtris, numleafs, numleafpvsbytes, numsurfaces;
2115         entity_render_t *ent = r_refdef.worldentity;
2116         model_t *model = r_refdef.worldmodel;
2117         unsigned char *data;
2118
2119         // compile the light
2120         rtlight->compiled = true;
2121         rtlight->static_numleafs = 0;
2122         rtlight->static_numleafpvsbytes = 0;
2123         rtlight->static_leaflist = NULL;
2124         rtlight->static_leafpvs = NULL;
2125         rtlight->static_numsurfaces = 0;
2126         rtlight->static_surfacelist = NULL;
2127         rtlight->cullmins[0] = rtlight->shadoworigin[0] - rtlight->radius;
2128         rtlight->cullmins[1] = rtlight->shadoworigin[1] - rtlight->radius;
2129         rtlight->cullmins[2] = rtlight->shadoworigin[2] - rtlight->radius;
2130         rtlight->cullmaxs[0] = rtlight->shadoworigin[0] + rtlight->radius;
2131         rtlight->cullmaxs[1] = rtlight->shadoworigin[1] + rtlight->radius;
2132         rtlight->cullmaxs[2] = rtlight->shadoworigin[2] + rtlight->radius;
2133
2134         if (model && model->GetLightInfo)
2135         {
2136                 // this variable must be set for the CompileShadowVolume code
2137                 r_shadow_compilingrtlight = rtlight;
2138                 R_Shadow_EnlargeLeafSurfaceBuffer(model->brush.num_leafs, model->num_surfaces);
2139                 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);
2140                 numleafpvsbytes = (model->brush.num_leafs + 7) >> 3;
2141                 data = (unsigned char *)Mem_Alloc(r_main_mempool, sizeof(int) * numleafs + numleafpvsbytes + sizeof(int) * numsurfaces);
2142                 rtlight->static_numleafs = numleafs;
2143                 rtlight->static_numleafpvsbytes = numleafpvsbytes;
2144                 rtlight->static_leaflist = (int *)data;data += sizeof(int) * numleafs;
2145                 rtlight->static_leafpvs = (unsigned char *)data;data += numleafpvsbytes;
2146                 rtlight->static_numsurfaces = numsurfaces;
2147                 rtlight->static_surfacelist = (int *)data;data += sizeof(int) * numsurfaces;
2148                 if (numleafs)
2149                         memcpy(rtlight->static_leaflist, r_shadow_buffer_leaflist, rtlight->static_numleafs * sizeof(*rtlight->static_leaflist));
2150                 if (numleafpvsbytes)
2151                         memcpy(rtlight->static_leafpvs, r_shadow_buffer_leafpvs, rtlight->static_numleafpvsbytes);
2152                 if (numsurfaces)
2153                         memcpy(rtlight->static_surfacelist, r_shadow_buffer_surfacelist, rtlight->static_numsurfaces * sizeof(*rtlight->static_surfacelist));
2154                 if (model->CompileShadowVolume && rtlight->shadow)
2155                         model->CompileShadowVolume(ent, rtlight->shadoworigin, rtlight->radius, numsurfaces, r_shadow_buffer_surfacelist);
2156                 // now we're done compiling the rtlight
2157                 r_shadow_compilingrtlight = NULL;
2158         }
2159
2160
2161         // use smallest available cullradius - box radius or light radius
2162         //rtlight->cullradius = RadiusFromBoundsAndOrigin(rtlight->cullmins, rtlight->cullmaxs, rtlight->shadoworigin);
2163         //rtlight->cullradius = min(rtlight->cullradius, rtlight->radius);
2164
2165         shadowmeshes = 0;
2166         shadowtris = 0;
2167         if (rtlight->static_meshchain_shadow)
2168         {
2169                 shadowmesh_t *mesh;
2170                 for (mesh = rtlight->static_meshchain_shadow;mesh;mesh = mesh->next)
2171                 {
2172                         shadowmeshes++;
2173                         shadowtris += mesh->numtriangles;
2174                 }
2175         }
2176
2177         if (developer.integer >= 10)
2178                 Con_Printf("static light built: %f %f %f : %f %f %f box, %i shadow volume triangles (in %i meshes)\n", rtlight->cullmins[0], rtlight->cullmins[1], rtlight->cullmins[2], rtlight->cullmaxs[0], rtlight->cullmaxs[1], rtlight->cullmaxs[2], shadowtris, shadowmeshes);
2179 }
2180
2181 void R_RTLight_Uncompile(rtlight_t *rtlight)
2182 {
2183         if (rtlight->compiled)
2184         {
2185                 if (rtlight->static_meshchain_shadow)
2186                         Mod_ShadowMesh_Free(rtlight->static_meshchain_shadow);
2187                 rtlight->static_meshchain_shadow = NULL;
2188                 // these allocations are grouped
2189                 if (rtlight->static_leaflist)
2190                         Mem_Free(rtlight->static_leaflist);
2191                 rtlight->static_numleafs = 0;
2192                 rtlight->static_numleafpvsbytes = 0;
2193                 rtlight->static_leaflist = NULL;
2194                 rtlight->static_leafpvs = NULL;
2195                 rtlight->static_numsurfaces = 0;
2196                 rtlight->static_surfacelist = NULL;
2197                 rtlight->compiled = false;
2198         }
2199 }
2200
2201 void R_Shadow_UncompileWorldLights(void)
2202 {
2203         dlight_t *light;
2204         for (light = r_shadow_worldlightchain;light;light = light->next)
2205                 R_RTLight_Uncompile(&light->rtlight);
2206 }
2207
2208 void R_Shadow_DrawEntityShadow(entity_render_t *ent, int numsurfaces, int *surfacelist)
2209 {
2210         vec3_t relativeshadoworigin, relativeshadowmins, relativeshadowmaxs;
2211         vec_t relativeshadowradius;
2212         if (ent == r_refdef.worldentity)
2213         {
2214                 if (r_shadow_rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
2215                 {
2216                         shadowmesh_t *mesh;
2217                         R_Mesh_Matrix(&ent->matrix);
2218                         for (mesh = r_shadow_rtlight->static_meshchain_shadow;mesh;mesh = mesh->next)
2219                         {
2220                                 renderstats.lights_shadowtriangles += mesh->numtriangles;
2221                                 R_Mesh_VertexPointer(mesh->vertex3f);
2222                                 GL_LockArrays(0, mesh->numverts);
2223                                 if (r_shadow_rendermode == R_SHADOW_RENDERMODE_STENCIL)
2224                                 {
2225                                         // decrement stencil if backface is behind depthbuffer
2226                                         qglCullFace(GL_BACK); // quake is backwards, this culls front faces
2227                                         qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);
2228                                         R_Mesh_Draw(0, mesh->numverts, mesh->numtriangles, mesh->element3i);
2229                                         // increment stencil if frontface is behind depthbuffer
2230                                         qglCullFace(GL_FRONT); // quake is backwards, this culls back faces
2231                                         qglStencilOp(GL_KEEP, GL_INCR, GL_KEEP);
2232                                 }
2233                                 R_Mesh_Draw(0, mesh->numverts, mesh->numtriangles, mesh->element3i);
2234                                 GL_LockArrays(0, 0);
2235                         }
2236                 }
2237                 else if (numsurfaces)
2238                 {
2239                         R_Mesh_Matrix(&ent->matrix);
2240                         ent->model->DrawShadowVolume(ent, r_shadow_rtlight->shadoworigin, r_shadow_rtlight->radius, numsurfaces, surfacelist, r_shadow_rtlight->cullmins, r_shadow_rtlight->cullmaxs);
2241                 }
2242         }
2243         else
2244         {
2245                 Matrix4x4_Transform(&ent->inversematrix, r_shadow_rtlight->shadoworigin, relativeshadoworigin);
2246                 relativeshadowradius = r_shadow_rtlight->radius / ent->scale;
2247                 relativeshadowmins[0] = relativeshadoworigin[0] - relativeshadowradius;
2248                 relativeshadowmins[1] = relativeshadoworigin[1] - relativeshadowradius;
2249                 relativeshadowmins[2] = relativeshadoworigin[2] - relativeshadowradius;
2250                 relativeshadowmaxs[0] = relativeshadoworigin[0] + relativeshadowradius;
2251                 relativeshadowmaxs[1] = relativeshadoworigin[1] + relativeshadowradius;
2252                 relativeshadowmaxs[2] = relativeshadoworigin[2] + relativeshadowradius;
2253                 R_Mesh_Matrix(&ent->matrix);
2254                 ent->model->DrawShadowVolume(ent, relativeshadoworigin, relativeshadowradius, ent->model->nummodelsurfaces, ent->model->surfacelist, relativeshadowmins, relativeshadowmaxs);
2255         }
2256 }
2257
2258 void R_Shadow_SetupEntityLight(const entity_render_t *ent)
2259 {
2260         // set up properties for rendering light onto this entity
2261         Matrix4x4_Concat(&r_shadow_entitytolight, &r_shadow_rtlight->matrix_worldtolight, &ent->matrix);
2262         Matrix4x4_Concat(&r_shadow_entitytoattenuationxyz, &matrix_attenuationxyz, &r_shadow_entitytolight);
2263         Matrix4x4_Concat(&r_shadow_entitytoattenuationz, &matrix_attenuationz, &r_shadow_entitytolight);
2264         Matrix4x4_Transform(&ent->inversematrix, r_shadow_rtlight->shadoworigin, r_shadow_entitylightorigin);
2265         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, r_shadow_entityeyeorigin);
2266         R_Mesh_Matrix(&ent->matrix);
2267 }
2268
2269 void R_Shadow_DrawEntityLight(entity_render_t *ent, int numsurfaces, int *surfacelist)
2270 {
2271         if (!ent->model->DrawLight)
2272                 return;
2273         R_Shadow_SetupEntityLight(ent);
2274         if (ent == r_refdef.worldentity)
2275                 ent->model->DrawLight(ent, numsurfaces, surfacelist);
2276         else
2277                 ent->model->DrawLight(ent, ent->model->nummodelsurfaces, ent->model->surfacelist);
2278 }
2279
2280 void R_DrawRTLight(rtlight_t *rtlight, qboolean visible)
2281 {
2282         int i, usestencil;
2283         float f;
2284         int numleafs, numsurfaces;
2285         int *leaflist, *surfacelist;
2286         unsigned char *leafpvs;
2287         int numlightentities;
2288         int numshadowentities;
2289         entity_render_t *lightentities[MAX_EDICTS];
2290         entity_render_t *shadowentities[MAX_EDICTS];
2291
2292         // skip lights that don't light because of ambientscale+diffusescale+specularscale being 0 (corona only lights)
2293         // skip lights that are basically invisible (color 0 0 0)
2294         if (VectorLength2(rtlight->color) * (rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale) < (1.0f / 1048576.0f))
2295                 return;
2296
2297         // loading is done before visibility checks because loading should happen
2298         // all at once at the start of a level, not when it stalls gameplay.
2299         // (especially important to benchmarks)
2300         // compile light
2301         if (rtlight->isstatic && !rtlight->compiled && r_shadow_realtime_world_compile.integer)
2302                 R_RTLight_Compile(rtlight);
2303         // load cubemap
2304         rtlight->currentcubemap = rtlight->cubemapname[0] ? R_Shadow_Cubemap(rtlight->cubemapname) : r_texture_whitecube;
2305
2306         // look up the light style value at this time
2307         f = (rtlight->style >= 0 ? r_refdef.lightstylevalue[rtlight->style] : 128) * (1.0f / 256.0f) * r_shadow_lightintensityscale.value;
2308         VectorScale(rtlight->color, f, rtlight->currentcolor);
2309         /*
2310         if (rtlight->selected)
2311         {
2312                 f = 2 + sin(realtime * M_PI * 4.0);
2313                 VectorScale(rtlight->currentcolor, f, rtlight->currentcolor);
2314         }
2315         */
2316
2317         // if lightstyle is currently off, don't draw the light
2318         if (VectorLength2(rtlight->currentcolor) < (1.0f / 1048576.0f))
2319                 return;
2320
2321         // if the light box is offscreen, skip it
2322         if (R_CullBox(rtlight->cullmins, rtlight->cullmaxs))
2323                 return;
2324
2325         if (rtlight->compiled && r_shadow_realtime_world_compile.integer)
2326         {
2327                 // compiled light, world available and can receive realtime lighting
2328                 // retrieve leaf information
2329                 numleafs = rtlight->static_numleafs;
2330                 leaflist = rtlight->static_leaflist;
2331                 leafpvs = rtlight->static_leafpvs;
2332                 numsurfaces = rtlight->static_numsurfaces;
2333                 surfacelist = rtlight->static_surfacelist;
2334         }
2335         else if (r_refdef.worldmodel && r_refdef.worldmodel->GetLightInfo)
2336         {
2337                 // dynamic light, world available and can receive realtime lighting
2338                 // calculate lit surfaces and leafs
2339                 R_Shadow_EnlargeLeafSurfaceBuffer(r_refdef.worldmodel->brush.num_leafs, r_refdef.worldmodel->num_surfaces);
2340                 r_refdef.worldmodel->GetLightInfo(r_refdef.worldentity, rtlight->shadoworigin, rtlight->radius, rtlight->cullmins, rtlight->cullmaxs, r_shadow_buffer_leaflist, r_shadow_buffer_leafpvs, &numleafs, r_shadow_buffer_surfacelist, r_shadow_buffer_surfacepvs, &numsurfaces);
2341                 leaflist = r_shadow_buffer_leaflist;
2342                 leafpvs = r_shadow_buffer_leafpvs;
2343                 surfacelist = r_shadow_buffer_surfacelist;
2344                 // if the reduced leaf bounds are offscreen, skip it
2345                 if (R_CullBox(rtlight->cullmins, rtlight->cullmaxs))
2346                         return;
2347         }
2348         else
2349         {
2350                 // no world
2351                 numleafs = 0;
2352                 leaflist = NULL;
2353                 leafpvs = NULL;
2354                 numsurfaces = 0;
2355                 surfacelist = NULL;
2356         }
2357         // check if light is illuminating any visible leafs
2358         if (numleafs)
2359         {
2360                 for (i = 0;i < numleafs;i++)
2361                         if (r_worldleafvisible[leaflist[i]])
2362                                 break;
2363                 if (i == numleafs)
2364                         return;
2365         }
2366         // set up a scissor rectangle for this light
2367         if (R_Shadow_ScissorForBBox(rtlight->cullmins, rtlight->cullmaxs))
2368                 return;
2369
2370         // make a list of lit entities and shadow casting entities
2371         numlightentities = 0;
2372         numshadowentities = 0;
2373         // don't count the world unless some surfaces are actually lit
2374         if (numsurfaces)
2375         {
2376                 lightentities[numlightentities++] = r_refdef.worldentity;
2377                 shadowentities[numshadowentities++] = r_refdef.worldentity;
2378         }
2379         // add dynamic entities that are lit by the light
2380         if (r_drawentities.integer)
2381         {
2382                 for (i = 0;i < r_refdef.numentities;i++)
2383                 {
2384                         entity_render_t *ent = r_refdef.entities[i];
2385                         if (BoxesOverlap(ent->mins, ent->maxs, rtlight->cullmins, rtlight->cullmaxs)
2386                          && ent->model
2387                          && !(ent->flags & RENDER_TRANSPARENT)
2388                          && (r_refdef.worldmodel == NULL || r_refdef.worldmodel->brush.BoxTouchingLeafPVS == NULL || r_refdef.worldmodel->brush.BoxTouchingLeafPVS(r_refdef.worldmodel, leafpvs, ent->mins, ent->maxs)))
2389                         {
2390                                 // about the VectorDistance2 - light emitting entities should not cast their own shadow
2391                                 if ((ent->flags & RENDER_SHADOW) && ent->model->DrawShadowVolume && VectorDistance2(ent->origin, rtlight->shadoworigin) > 0.1)
2392                                         shadowentities[numshadowentities++] = ent;
2393                                 if (ent->visframe == r_framecount && (ent->flags & RENDER_LIGHT) && ent->model->DrawLight)
2394                                         lightentities[numlightentities++] = ent;
2395                         }
2396                 }
2397         }
2398
2399         // return if there's nothing at all to light
2400         if (!numlightentities)
2401                 return;
2402
2403         // don't let sound skip if going slow
2404         if (r_refdef.extraupdate)
2405                 S_ExtraUpdate ();
2406
2407         // make this the active rtlight for rendering purposes
2408         R_Shadow_RenderMode_ActiveLight(rtlight);
2409         // count this light in the r_speeds
2410         renderstats.lights++;
2411
2412         usestencil = false;
2413         if (numshadowentities && rtlight->shadow && (rtlight->isstatic ? r_rtworldshadows : r_rtdlightshadows))
2414         {
2415                 // draw stencil shadow volumes to mask off pixels that are in shadow
2416                 // so that they won't receive lighting
2417                 if (gl_stencil)
2418                 {
2419                         usestencil = true;
2420                         R_Shadow_RenderMode_StencilShadowVolumes();
2421                         for (i = 0;i < numshadowentities;i++)
2422                                 R_Shadow_DrawEntityShadow(shadowentities[i], numsurfaces, surfacelist);
2423                 }
2424
2425                 // optionally draw visible shape of the shadow volumes
2426                 // for performance analysis by level designers
2427                 if (r_showshadowvolumes.integer)
2428                 {
2429                         R_Shadow_RenderMode_VisibleShadowVolumes();
2430                         for (i = 0;i < numshadowentities;i++)
2431                                 R_Shadow_DrawEntityShadow(shadowentities[i], numsurfaces, surfacelist);
2432                 }
2433         }
2434
2435         if (numlightentities)
2436         {
2437                 // draw lighting in the unmasked areas
2438                 R_Shadow_RenderMode_Lighting(usestencil, false);
2439                 for (i = 0;i < numlightentities;i++)
2440                         R_Shadow_DrawEntityLight(lightentities[i], numsurfaces, surfacelist);
2441
2442                 // optionally draw the illuminated areas
2443                 // for performance analysis by level designers
2444                 if (r_showlighting.integer)
2445                 {
2446                         R_Shadow_RenderMode_VisibleLighting(usestencil && !r_showdisabledepthtest.integer, false);
2447                         for (i = 0;i < numlightentities;i++)
2448                                 R_Shadow_DrawEntityLight(lightentities[i], numsurfaces, surfacelist);
2449                 }
2450         }
2451 }
2452
2453 void R_ShadowVolumeLighting(qboolean visible)
2454 {
2455         int lnum, flag;
2456         dlight_t *light;
2457
2458         if (r_refdef.worldmodel && strncmp(r_refdef.worldmodel->name, r_shadow_mapname, sizeof(r_shadow_mapname)))
2459                 R_Shadow_EditLights_Reload_f();
2460
2461         R_Shadow_RenderMode_Begin();
2462
2463         flag = r_rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
2464         if (r_shadow_debuglight.integer >= 0)
2465         {
2466                 for (lnum = 0, light = r_shadow_worldlightchain;light;lnum++, light = light->next)
2467                         if (lnum == r_shadow_debuglight.integer && (light->flags & flag))
2468                                 R_DrawRTLight(&light->rtlight, visible);
2469         }
2470         else
2471                 for (lnum = 0, light = r_shadow_worldlightchain;light;lnum++, light = light->next)
2472                         if (light->flags & flag)
2473                                 R_DrawRTLight(&light->rtlight, visible);
2474         if (r_rtdlight)
2475                 for (lnum = 0;lnum < r_refdef.numlights;lnum++)
2476                         R_DrawRTLight(&r_refdef.lights[lnum]->rtlight, visible);
2477
2478         R_Shadow_RenderMode_End();
2479 }
2480
2481 //static char *suffix[6] = {"ft", "bk", "rt", "lf", "up", "dn"};
2482 typedef struct suffixinfo_s
2483 {
2484         char *suffix;
2485         qboolean flipx, flipy, flipdiagonal;
2486 }
2487 suffixinfo_t;
2488 static suffixinfo_t suffix[3][6] =
2489 {
2490         {
2491                 {"px",   false, false, false},
2492                 {"nx",   false, false, false},
2493                 {"py",   false, false, false},
2494                 {"ny",   false, false, false},
2495                 {"pz",   false, false, false},
2496                 {"nz",   false, false, false}
2497         },
2498         {
2499                 {"posx", false, false, false},
2500                 {"negx", false, false, false},
2501                 {"posy", false, false, false},
2502                 {"negy", false, false, false},
2503                 {"posz", false, false, false},
2504                 {"negz", false, false, false}
2505         },
2506         {
2507                 {"rt",    true, false,  true},
2508                 {"lf",   false,  true,  true},
2509                 {"ft",    true,  true, false},
2510                 {"bk",   false, false, false},
2511                 {"up",    true, false,  true},
2512                 {"dn",    true, false,  true}
2513         }
2514 };
2515
2516 static int componentorder[4] = {0, 1, 2, 3};
2517
2518 rtexture_t *R_Shadow_LoadCubemap(const char *basename)
2519 {
2520         int i, j, cubemapsize;
2521         unsigned char *cubemappixels, *image_rgba;
2522         rtexture_t *cubemaptexture;
2523         char name[256];
2524         // must start 0 so the first loadimagepixels has no requested width/height
2525         cubemapsize = 0;
2526         cubemappixels = NULL;
2527         cubemaptexture = NULL;
2528         // keep trying different suffix groups (posx, px, rt) until one loads
2529         for (j = 0;j < 3 && !cubemappixels;j++)
2530         {
2531                 // load the 6 images in the suffix group
2532                 for (i = 0;i < 6;i++)
2533                 {
2534                         // generate an image name based on the base and and suffix
2535                         dpsnprintf(name, sizeof(name), "%s%s", basename, suffix[j][i].suffix);
2536                         // load it
2537                         if ((image_rgba = loadimagepixels(name, false, cubemapsize, cubemapsize)))
2538                         {
2539                                 // an image loaded, make sure width and height are equal
2540                                 if (image_width == image_height)
2541                                 {
2542                                         // if this is the first image to load successfully, allocate the cubemap memory
2543                                         if (!cubemappixels && image_width >= 1)
2544                                         {
2545                                                 cubemapsize = image_width;
2546                                                 // note this clears to black, so unavailable sides are black
2547                                                 cubemappixels = (unsigned char *)Mem_Alloc(tempmempool, 6*cubemapsize*cubemapsize*4);
2548                                         }
2549                                         // copy the image with any flipping needed by the suffix (px and posx types don't need flipping)
2550                                         if (cubemappixels)
2551                                                 Image_CopyMux(cubemappixels+i*cubemapsize*cubemapsize*4, image_rgba, cubemapsize, cubemapsize, suffix[j][i].flipx, suffix[j][i].flipy, suffix[j][i].flipdiagonal, 4, 4, componentorder);
2552                                 }
2553                                 else
2554                                         Con_Printf("Cubemap image \"%s\" (%ix%i) is not square, OpenGL requires square cubemaps.\n", name, image_width, image_height);
2555                                 // free the image
2556                                 Mem_Free(image_rgba);
2557                         }
2558                 }
2559         }
2560         // if a cubemap loaded, upload it
2561         if (cubemappixels)
2562         {
2563                 if (!r_shadow_filters_texturepool)
2564                         r_shadow_filters_texturepool = R_AllocTexturePool();
2565                 cubemaptexture = R_LoadTextureCubeMap(r_shadow_filters_texturepool, basename, cubemapsize, cubemappixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
2566                 Mem_Free(cubemappixels);
2567         }
2568         else
2569         {
2570                 Con_Printf("Failed to load Cubemap \"%s\", tried ", basename);
2571                 for (j = 0;j < 3;j++)
2572                         for (i = 0;i < 6;i++)
2573                                 Con_Printf("%s\"%s%s.tga\"", j + i > 0 ? ", " : "", basename, suffix[j][i].suffix);
2574                 Con_Print(" and was unable to find any of them.\n");
2575         }
2576         return cubemaptexture;
2577 }
2578
2579 rtexture_t *R_Shadow_Cubemap(const char *basename)
2580 {
2581         int i;
2582         for (i = 0;i < numcubemaps;i++)
2583                 if (!strcasecmp(cubemaps[i].basename, basename))
2584                         return cubemaps[i].texture;
2585         if (i >= MAX_CUBEMAPS)
2586                 return r_texture_whitecube;
2587         numcubemaps++;
2588         strcpy(cubemaps[i].basename, basename);
2589         cubemaps[i].texture = R_Shadow_LoadCubemap(cubemaps[i].basename);
2590         if (!cubemaps[i].texture)
2591                 cubemaps[i].texture = r_texture_whitecube;
2592         return cubemaps[i].texture;
2593 }
2594
2595 void R_Shadow_FreeCubemaps(void)
2596 {
2597         numcubemaps = 0;
2598         R_FreeTexturePool(&r_shadow_filters_texturepool);
2599 }
2600
2601 dlight_t *R_Shadow_NewWorldLight(void)
2602 {
2603         dlight_t *light;
2604         light = (dlight_t *)Mem_Alloc(r_main_mempool, sizeof(dlight_t));
2605         light->next = r_shadow_worldlightchain;
2606         r_shadow_worldlightchain = light;
2607         return light;
2608 }
2609
2610 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)
2611 {
2612         VectorCopy(origin, light->origin);
2613         light->angles[0] = angles[0] - 360 * floor(angles[0] / 360);
2614         light->angles[1] = angles[1] - 360 * floor(angles[1] / 360);
2615         light->angles[2] = angles[2] - 360 * floor(angles[2] / 360);
2616         light->color[0] = max(color[0], 0);
2617         light->color[1] = max(color[1], 0);
2618         light->color[2] = max(color[2], 0);
2619         light->radius = max(radius, 0);
2620         light->style = style;
2621         if (light->style < 0 || light->style >= MAX_LIGHTSTYLES)
2622         {
2623                 Con_Printf("R_Shadow_NewWorldLight: invalid light style number %i, must be >= 0 and < %i\n", light->style, MAX_LIGHTSTYLES);
2624                 light->style = 0;
2625         }
2626         light->shadow = shadowenable;
2627         light->corona = corona;
2628         if (!cubemapname)
2629                 cubemapname = "";
2630         strlcpy(light->cubemapname, cubemapname, sizeof(light->cubemapname));
2631         light->coronasizescale = coronasizescale;
2632         light->ambientscale = ambientscale;
2633         light->diffusescale = diffusescale;
2634         light->specularscale = specularscale;
2635         light->flags = flags;
2636         Matrix4x4_CreateFromQuakeEntity(&light->matrix, light->origin[0], light->origin[1], light->origin[2], light->angles[0], light->angles[1], light->angles[2], 1);
2637
2638         R_RTLight_Update(light, true);
2639 }
2640
2641 void R_Shadow_FreeWorldLight(dlight_t *light)
2642 {
2643         dlight_t **lightpointer;
2644         R_RTLight_Uncompile(&light->rtlight);
2645         for (lightpointer = &r_shadow_worldlightchain;*lightpointer && *lightpointer != light;lightpointer = &(*lightpointer)->next);
2646         if (*lightpointer != light)
2647                 Sys_Error("R_Shadow_FreeWorldLight: light not linked into chain");
2648         *lightpointer = light->next;
2649         Mem_Free(light);
2650 }
2651
2652 void R_Shadow_ClearWorldLights(void)
2653 {
2654         while (r_shadow_worldlightchain)
2655                 R_Shadow_FreeWorldLight(r_shadow_worldlightchain);
2656         r_shadow_selectedlight = NULL;
2657         R_Shadow_FreeCubemaps();
2658 }
2659
2660 void R_Shadow_SelectLight(dlight_t *light)
2661 {
2662         if (r_shadow_selectedlight)
2663                 r_shadow_selectedlight->selected = false;
2664         r_shadow_selectedlight = light;
2665         if (r_shadow_selectedlight)
2666                 r_shadow_selectedlight->selected = true;
2667 }
2668
2669 void R_Shadow_DrawCursor_TransparentCallback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
2670 {
2671         float scale = r_editlights_cursorgrid.value * 0.5f;
2672         R_DrawSprite(GL_SRC_ALPHA, GL_ONE, r_crosshairs[1]->tex, NULL, false, r_editlights_cursorlocation, r_viewright, r_viewup, scale, -scale, -scale, scale, 1, 1, 1, 0.5f);
2673 }
2674
2675 void R_Shadow_DrawLightSprite_TransparentCallback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
2676 {
2677         float intensity;
2678         const dlight_t *light = (dlight_t *)ent;
2679         intensity = 0.5;
2680         if (light->selected)
2681                 intensity = 0.75 + 0.25 * sin(realtime * M_PI * 4.0);
2682         if (!light->shadow)
2683                 intensity *= 0.5f;
2684         R_DrawSprite(GL_SRC_ALPHA, GL_ONE, r_crosshairs[surfacenumber]->tex, NULL, false, light->origin, r_viewright, r_viewup, 8, -8, -8, 8, intensity, intensity, intensity, 0.5);
2685 }
2686
2687 void R_Shadow_DrawLightSprites(void)
2688 {
2689         int i;
2690         dlight_t *light;
2691
2692         for (i = 0, light = r_shadow_worldlightchain;light;i++, light = light->next)
2693                 R_MeshQueue_AddTransparent(light->origin, R_Shadow_DrawLightSprite_TransparentCallback, (entity_render_t *)light, 1+(i % 5), &light->rtlight);
2694         R_MeshQueue_AddTransparent(r_editlights_cursorlocation, R_Shadow_DrawCursor_TransparentCallback, NULL, 0, NULL);
2695 }
2696
2697 void R_Shadow_SelectLightInView(void)
2698 {
2699         float bestrating, rating, temp[3];
2700         dlight_t *best, *light;
2701         best = NULL;
2702         bestrating = 0;
2703         for (light = r_shadow_worldlightchain;light;light = light->next)
2704         {
2705                 VectorSubtract(light->origin, r_vieworigin, temp);
2706                 rating = (DotProduct(temp, r_viewforward) / sqrt(DotProduct(temp, temp)));
2707                 if (rating >= 0.95)
2708                 {
2709                         rating /= (1 + 0.0625f * sqrt(DotProduct(temp, temp)));
2710                         if (bestrating < rating && CL_TraceBox(light->origin, vec3_origin, vec3_origin, r_vieworigin, true, NULL, SUPERCONTENTS_SOLID, false).fraction == 1.0f)
2711                         {
2712                                 bestrating = rating;
2713                                 best = light;
2714                         }
2715                 }
2716         }
2717         R_Shadow_SelectLight(best);
2718 }
2719
2720 void R_Shadow_LoadWorldLights(void)
2721 {
2722         int n, a, style, shadow, flags;
2723         char tempchar, *lightsstring, *s, *t, name[MAX_QPATH], cubemapname[MAX_QPATH];
2724         float origin[3], radius, color[3], angles[3], corona, coronasizescale, ambientscale, diffusescale, specularscale;
2725         if (r_refdef.worldmodel == NULL)
2726         {
2727                 Con_Print("No map loaded.\n");
2728                 return;
2729         }
2730         FS_StripExtension (r_refdef.worldmodel->name, name, sizeof (name));
2731         strlcat (name, ".rtlights", sizeof (name));
2732         lightsstring = (char *)FS_LoadFile(name, tempmempool, false, NULL);
2733         if (lightsstring)
2734         {
2735                 s = lightsstring;
2736                 n = 0;
2737                 while (*s)
2738                 {
2739                         t = s;
2740                         /*
2741                         shadow = true;
2742                         for (;COM_Parse(t, true) && strcmp(
2743                         if (COM_Parse(t, true))
2744                         {
2745                                 if (com_token[0] == '!')
2746                                 {
2747                                         shadow = false;
2748                                         origin[0] = atof(com_token+1);
2749                                 }
2750                                 else
2751                                         origin[0] = atof(com_token);
2752                                 if (Com_Parse(t
2753                         }
2754                         */
2755                         t = s;
2756                         while (*s && *s != '\n' && *s != '\r')
2757                                 s++;
2758                         if (!*s)
2759                                 break;
2760                         tempchar = *s;
2761                         shadow = true;
2762                         // check for modifier flags
2763                         if (*t == '!')
2764                         {
2765                                 shadow = false;
2766                                 t++;
2767                         }
2768                         *s = 0;
2769                         a = sscanf(t, "%f %f %f %f %f %f %f %d %s %f %f %f %f %f %f %f %f %i", &origin[0], &origin[1], &origin[2], &radius, &color[0], &color[1], &color[2], &style, cubemapname, &corona, &angles[0], &angles[1], &angles[2], &coronasizescale, &ambientscale, &diffusescale, &specularscale, &flags);
2770                         *s = tempchar;
2771                         if (a < 18)
2772                                 flags = LIGHTFLAG_REALTIMEMODE;
2773                         if (a < 17)
2774                                 specularscale = 1;
2775                         if (a < 16)
2776                                 diffusescale = 1;
2777                         if (a < 15)
2778                                 ambientscale = 0;
2779                         if (a < 14)
2780                                 coronasizescale = 0.25f;
2781                         if (a < 13)
2782                                 VectorClear(angles);
2783                         if (a < 10)
2784                                 corona = 0;
2785                         if (a < 9 || !strcmp(cubemapname, "\"\""))
2786                                 cubemapname[0] = 0;
2787                         // remove quotes on cubemapname
2788                         if (cubemapname[0] == '"' && cubemapname[strlen(cubemapname) - 1] == '"')
2789                         {
2790                                 cubemapname[strlen(cubemapname)-1] = 0;
2791                                 strcpy(cubemapname, cubemapname + 1);
2792                         }
2793                         if (a < 8)
2794                         {
2795                                 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);
2796                                 break;
2797                         }
2798                         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, angles, color, radius, corona, style, shadow, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
2799                         if (*s == '\r')
2800                                 s++;
2801                         if (*s == '\n')
2802                                 s++;
2803                         n++;
2804                 }
2805                 if (*s)
2806                         Con_Printf("invalid rtlights file \"%s\"\n", name);
2807                 Mem_Free(lightsstring);
2808         }
2809 }
2810
2811 void R_Shadow_SaveWorldLights(void)
2812 {
2813         dlight_t *light;
2814         size_t bufchars, bufmaxchars;
2815         char *buf, *oldbuf;
2816         char name[MAX_QPATH];
2817         char line[MAX_INPUTLINE];
2818         if (!r_shadow_worldlightchain)
2819                 return;
2820         if (r_refdef.worldmodel == NULL)
2821         {
2822                 Con_Print("No map loaded.\n");
2823                 return;
2824         }
2825         FS_StripExtension (r_refdef.worldmodel->name, name, sizeof (name));
2826         strlcat (name, ".rtlights", sizeof (name));
2827         bufchars = bufmaxchars = 0;
2828         buf = NULL;
2829         for (light = r_shadow_worldlightchain;light;light = light->next)
2830         {
2831                 if (light->coronasizescale != 0.25f || light->ambientscale != 0 || light->diffusescale != 1 || light->specularscale != 1 || light->flags != LIGHTFLAG_REALTIMEMODE)
2832                         sprintf(line, "%s%f %f %f %f %f %f %f %d \"%s\" %f %f %f %f %f %f %f %f %i\n", light->shadow ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->radius, light->color[0], light->color[1], light->color[2], light->style, light->cubemapname, light->corona, light->angles[0], light->angles[1], light->angles[2], light->coronasizescale, light->ambientscale, light->diffusescale, light->specularscale, light->flags);
2833                 else if (light->cubemapname[0] || light->corona || light->angles[0] || light->angles[1] || light->angles[2])
2834                         sprintf(line, "%s%f %f %f %f %f %f %f %d \"%s\" %f %f %f %f\n", light->shadow ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->radius, light->color[0], light->color[1], light->color[2], light->style, light->cubemapname, light->corona, light->angles[0], light->angles[1], light->angles[2]);
2835                 else
2836                         sprintf(line, "%s%f %f %f %f %f %f %f %d\n", light->shadow ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->radius, light->color[0], light->color[1], light->color[2], light->style);
2837                 if (bufchars + strlen(line) > bufmaxchars)
2838                 {
2839                         bufmaxchars = bufchars + strlen(line) + 2048;
2840                         oldbuf = buf;
2841                         buf = (char *)Mem_Alloc(tempmempool, bufmaxchars);
2842                         if (oldbuf)
2843                         {
2844                                 if (bufchars)
2845                                         memcpy(buf, oldbuf, bufchars);
2846                                 Mem_Free(oldbuf);
2847                         }
2848                 }
2849                 if (strlen(line))
2850                 {
2851                         memcpy(buf + bufchars, line, strlen(line));
2852                         bufchars += strlen(line);
2853                 }
2854         }
2855         if (bufchars)
2856                 FS_WriteFile(name, buf, (fs_offset_t)bufchars);
2857         if (buf)
2858                 Mem_Free(buf);
2859 }
2860
2861 void R_Shadow_LoadLightsFile(void)
2862 {
2863         int n, a, style;
2864         char tempchar, *lightsstring, *s, *t, name[MAX_QPATH];
2865         float origin[3], radius, color[3], subtract, spotdir[3], spotcone, falloff, distbias;
2866         if (r_refdef.worldmodel == NULL)
2867         {
2868                 Con_Print("No map loaded.\n");
2869                 return;
2870         }
2871         FS_StripExtension (r_refdef.worldmodel->name, name, sizeof (name));
2872         strlcat (name, ".lights", sizeof (name));
2873         lightsstring = (char *)FS_LoadFile(name, tempmempool, false, NULL);
2874         if (lightsstring)
2875         {
2876                 s = lightsstring;
2877                 n = 0;
2878                 while (*s)
2879                 {
2880                         t = s;
2881                         while (*s && *s != '\n' && *s != '\r')
2882                                 s++;
2883                         if (!*s)
2884                                 break;
2885                         tempchar = *s;
2886                         *s = 0;
2887                         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);
2888                         *s = tempchar;
2889                         if (a < 14)
2890                         {
2891                                 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);
2892                                 break;
2893                         }
2894                         radius = sqrt(DotProduct(color, color) / (falloff * falloff * 8192.0f * 8192.0f));
2895                         radius = bound(15, radius, 4096);
2896                         VectorScale(color, (2.0f / (8388608.0f)), color);
2897                         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, vec3_origin, color, radius, 0, style, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
2898                         if (*s == '\r')
2899                                 s++;
2900                         if (*s == '\n')
2901                                 s++;
2902                         n++;
2903                 }
2904                 if (*s)
2905                         Con_Printf("invalid lights file \"%s\"\n", name);
2906                 Mem_Free(lightsstring);
2907         }
2908 }
2909
2910 // tyrlite/hmap2 light types in the delay field
2911 typedef enum lighttype_e {LIGHTTYPE_MINUSX, LIGHTTYPE_RECIPX, LIGHTTYPE_RECIPXX, LIGHTTYPE_NONE, LIGHTTYPE_SUN, LIGHTTYPE_MINUSXX} lighttype_t;
2912
2913 void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void)
2914 {
2915         int entnum, style, islight, skin, pflags, effects, type, n;
2916         char *entfiledata;
2917         const char *data;
2918         float origin[3], angles[3], radius, color[3], light[4], fadescale, lightscale, originhack[3], overridecolor[3], vec[4];
2919         char key[256], value[MAX_INPUTLINE];
2920
2921         if (r_refdef.worldmodel == NULL)
2922         {
2923                 Con_Print("No map loaded.\n");
2924                 return;
2925         }
2926         // try to load a .ent file first
2927         FS_StripExtension (r_refdef.worldmodel->name, key, sizeof (key));
2928         strlcat (key, ".ent", sizeof (key));
2929         data = entfiledata = (char *)FS_LoadFile(key, tempmempool, true, NULL);
2930         // and if that is not found, fall back to the bsp file entity string
2931         if (!data)
2932                 data = r_refdef.worldmodel->brush.entities;
2933         if (!data)
2934                 return;
2935         for (entnum = 0;COM_ParseToken(&data, false) && com_token[0] == '{';entnum++)
2936         {
2937                 type = LIGHTTYPE_MINUSX;
2938                 origin[0] = origin[1] = origin[2] = 0;
2939                 originhack[0] = originhack[1] = originhack[2] = 0;
2940                 angles[0] = angles[1] = angles[2] = 0;
2941                 color[0] = color[1] = color[2] = 1;
2942                 light[0] = light[1] = light[2] = 1;light[3] = 300;
2943                 overridecolor[0] = overridecolor[1] = overridecolor[2] = 1;
2944                 fadescale = 1;
2945                 lightscale = 1;
2946                 style = 0;
2947                 skin = 0;
2948                 pflags = 0;
2949                 effects = 0;
2950                 islight = false;
2951                 while (1)
2952                 {
2953                         if (!COM_ParseToken(&data, false))
2954                                 break; // error
2955                         if (com_token[0] == '}')
2956                                 break; // end of entity
2957                         if (com_token[0] == '_')
2958                                 strcpy(key, com_token + 1);
2959                         else
2960                                 strcpy(key, com_token);
2961                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
2962                                 key[strlen(key)-1] = 0;
2963                         if (!COM_ParseToken(&data, false))
2964                                 break; // error
2965                         strcpy(value, com_token);
2966
2967                         // now that we have the key pair worked out...
2968                         if (!strcmp("light", key))
2969                         {
2970                                 n = sscanf(value, "%f %f %f %f", &vec[0], &vec[1], &vec[2], &vec[3]);
2971                                 if (n == 1)
2972                                 {
2973                                         // quake
2974                                         light[0] = vec[0] * (1.0f / 256.0f);
2975                                         light[1] = vec[0] * (1.0f / 256.0f);
2976                                         light[2] = vec[0] * (1.0f / 256.0f);
2977                                         light[3] = vec[0];
2978                                 }
2979                                 else if (n == 4)
2980                                 {
2981                                         // halflife
2982                                         light[0] = vec[0] * (1.0f / 255.0f);
2983                                         light[1] = vec[1] * (1.0f / 255.0f);
2984                                         light[2] = vec[2] * (1.0f / 255.0f);
2985                                         light[3] = vec[3];
2986                                 }
2987                         }
2988                         else if (!strcmp("delay", key))
2989                                 type = atoi(value);
2990                         else if (!strcmp("origin", key))
2991                                 sscanf(value, "%f %f %f", &origin[0], &origin[1], &origin[2]);
2992                         else if (!strcmp("angle", key))
2993                                 angles[0] = 0, angles[1] = atof(value), angles[2] = 0;
2994                         else if (!strcmp("angles", key))
2995                                 sscanf(value, "%f %f %f", &angles[0], &angles[1], &angles[2]);
2996                         else if (!strcmp("color", key))
2997                                 sscanf(value, "%f %f %f", &color[0], &color[1], &color[2]);
2998                         else if (!strcmp("wait", key))
2999                                 fadescale = atof(value);
3000                         else if (!strcmp("classname", key))
3001                         {
3002                                 if (!strncmp(value, "light", 5))
3003                                 {
3004                                         islight = true;
3005                                         if (!strcmp(value, "light_fluoro"))
3006                                         {
3007                                                 originhack[0] = 0;
3008                                                 originhack[1] = 0;
3009                                                 originhack[2] = 0;
3010                                                 overridecolor[0] = 1;
3011                                                 overridecolor[1] = 1;
3012                                                 overridecolor[2] = 1;
3013                                         }
3014                                         if (!strcmp(value, "light_fluorospark"))
3015                                         {
3016                                                 originhack[0] = 0;
3017                                                 originhack[1] = 0;
3018                                                 originhack[2] = 0;
3019                                                 overridecolor[0] = 1;
3020                                                 overridecolor[1] = 1;
3021                                                 overridecolor[2] = 1;
3022                                         }
3023                                         if (!strcmp(value, "light_globe"))
3024                                         {
3025                                                 originhack[0] = 0;
3026                                                 originhack[1] = 0;
3027                                                 originhack[2] = 0;
3028                                                 overridecolor[0] = 1;
3029                                                 overridecolor[1] = 0.8;
3030                                                 overridecolor[2] = 0.4;
3031                                         }
3032                                         if (!strcmp(value, "light_flame_large_yellow"))
3033                                         {
3034                                                 originhack[0] = 0;
3035                                                 originhack[1] = 0;
3036                                                 originhack[2] = 0;
3037                                                 overridecolor[0] = 1;
3038                                                 overridecolor[1] = 0.5;
3039                                                 overridecolor[2] = 0.1;
3040                                         }
3041                                         if (!strcmp(value, "light_flame_small_yellow"))
3042                                         {
3043                                                 originhack[0] = 0;
3044                                                 originhack[1] = 0;
3045                                                 originhack[2] = 0;
3046                                                 overridecolor[0] = 1;
3047                                                 overridecolor[1] = 0.5;
3048                                                 overridecolor[2] = 0.1;
3049                                         }
3050                                         if (!strcmp(value, "light_torch_small_white"))
3051                                         {
3052                                                 originhack[0] = 0;
3053                                                 originhack[1] = 0;
3054                                                 originhack[2] = 0;
3055                                                 overridecolor[0] = 1;
3056                                                 overridecolor[1] = 0.5;
3057                                                 overridecolor[2] = 0.1;
3058                                         }
3059                                         if (!strcmp(value, "light_torch_small_walltorch"))
3060                                         {
3061                                                 originhack[0] = 0;
3062                                                 originhack[1] = 0;
3063                                                 originhack[2] = 0;
3064                                                 overridecolor[0] = 1;
3065                                                 overridecolor[1] = 0.5;
3066                                                 overridecolor[2] = 0.1;
3067                                         }
3068                                 }
3069                         }
3070                         else if (!strcmp("style", key))
3071                                 style = atoi(value);
3072                         else if (!strcmp("skin", key))
3073                                 skin = (int)atof(value);
3074                         else if (!strcmp("pflags", key))
3075                                 pflags = (int)atof(value);
3076                         else if (!strcmp("effects", key))
3077                                 effects = (int)atof(value);
3078                         else if (r_refdef.worldmodel->type == mod_brushq3)
3079                         {
3080                                 if (!strcmp("scale", key))
3081                                         lightscale = atof(value);
3082                                 if (!strcmp("fade", key))
3083                                         fadescale = atof(value);
3084                         }
3085                 }
3086                 if (!islight)
3087                         continue;
3088                 if (lightscale <= 0)
3089                         lightscale = 1;
3090                 if (fadescale <= 0)
3091                         fadescale = 1;
3092                 if (color[0] == color[1] && color[0] == color[2])
3093                 {
3094                         color[0] *= overridecolor[0];
3095                         color[1] *= overridecolor[1];
3096                         color[2] *= overridecolor[2];
3097                 }
3098                 radius = light[3] * r_editlights_quakelightsizescale.value * lightscale / fadescale;
3099                 color[0] = color[0] * light[0];
3100                 color[1] = color[1] * light[1];
3101                 color[2] = color[2] * light[2];
3102                 switch (type)
3103                 {
3104                 case LIGHTTYPE_MINUSX:
3105                         break;
3106                 case LIGHTTYPE_RECIPX:
3107                         radius *= 2;
3108                         VectorScale(color, (1.0f / 16.0f), color);
3109                         break;
3110                 case LIGHTTYPE_RECIPXX:
3111                         radius *= 2;
3112                         VectorScale(color, (1.0f / 16.0f), color);
3113                         break;
3114                 default:
3115                 case LIGHTTYPE_NONE:
3116                         break;
3117                 case LIGHTTYPE_SUN:
3118                         break;
3119                 case LIGHTTYPE_MINUSXX:
3120                         break;
3121                 }
3122                 VectorAdd(origin, originhack, origin);
3123                 if (radius >= 1)
3124                         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);
3125         }
3126         if (entfiledata)
3127                 Mem_Free(entfiledata);
3128 }
3129
3130
3131 void R_Shadow_SetCursorLocationForView(void)
3132 {
3133         vec_t dist, push;
3134         vec3_t dest, endpos;
3135         trace_t trace;
3136         VectorMA(r_vieworigin, r_editlights_cursordistance.value, r_viewforward, dest);
3137         trace = CL_TraceBox(r_vieworigin, vec3_origin, vec3_origin, dest, true, NULL, SUPERCONTENTS_SOLID, false);
3138         if (trace.fraction < 1)
3139         {
3140                 dist = trace.fraction * r_editlights_cursordistance.value;
3141                 push = r_editlights_cursorpushback.value;
3142                 if (push > dist)
3143                         push = dist;
3144                 push = -push;
3145                 VectorMA(trace.endpos, push, r_viewforward, endpos);
3146                 VectorMA(endpos, r_editlights_cursorpushoff.value, trace.plane.normal, endpos);
3147         }
3148         else
3149         {
3150                 VectorClear( endpos );
3151         }
3152         r_editlights_cursorlocation[0] = floor(endpos[0] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
3153         r_editlights_cursorlocation[1] = floor(endpos[1] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
3154         r_editlights_cursorlocation[2] = floor(endpos[2] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
3155 }
3156
3157 void R_Shadow_UpdateWorldLightSelection(void)
3158 {
3159         if (r_editlights.integer)
3160         {
3161                 R_Shadow_SetCursorLocationForView();
3162                 R_Shadow_SelectLightInView();
3163                 R_Shadow_DrawLightSprites();
3164         }
3165         else
3166                 R_Shadow_SelectLight(NULL);
3167 }
3168
3169 void R_Shadow_EditLights_Clear_f(void)
3170 {
3171         R_Shadow_ClearWorldLights();
3172 }
3173
3174 void R_Shadow_EditLights_Reload_f(void)
3175 {
3176         if (!r_refdef.worldmodel)
3177                 return;
3178         strlcpy(r_shadow_mapname, r_refdef.worldmodel->name, sizeof(r_shadow_mapname));
3179         R_Shadow_ClearWorldLights();
3180         R_Shadow_LoadWorldLights();
3181         if (r_shadow_worldlightchain == NULL)
3182         {
3183                 R_Shadow_LoadLightsFile();
3184                 if (r_shadow_worldlightchain == NULL)
3185                         R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite();
3186         }
3187 }
3188
3189 void R_Shadow_EditLights_Save_f(void)
3190 {
3191         if (!r_refdef.worldmodel)
3192                 return;
3193         R_Shadow_SaveWorldLights();
3194 }
3195
3196 void R_Shadow_EditLights_ImportLightEntitiesFromMap_f(void)
3197 {
3198         R_Shadow_ClearWorldLights();
3199         R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite();
3200 }
3201
3202 void R_Shadow_EditLights_ImportLightsFile_f(void)
3203 {
3204         R_Shadow_ClearWorldLights();
3205         R_Shadow_LoadLightsFile();
3206 }
3207
3208 void R_Shadow_EditLights_Spawn_f(void)
3209 {
3210         vec3_t color;
3211         if (!r_editlights.integer)
3212         {
3213                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
3214                 return;
3215         }
3216         if (Cmd_Argc() != 1)
3217         {
3218                 Con_Print("r_editlights_spawn does not take parameters\n");
3219                 return;
3220         }
3221         color[0] = color[1] = color[2] = 1;
3222         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), r_editlights_cursorlocation, vec3_origin, color, 200, 0, 0, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
3223 }
3224
3225 void R_Shadow_EditLights_Edit_f(void)
3226 {
3227         vec3_t origin, angles, color;
3228         vec_t radius, corona, coronasizescale, ambientscale, diffusescale, specularscale;
3229         int style, shadows, flags, normalmode, realtimemode;
3230         char cubemapname[MAX_INPUTLINE];
3231         if (!r_editlights.integer)
3232         {
3233                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
3234                 return;
3235         }
3236         if (!r_shadow_selectedlight)
3237         {
3238                 Con_Print("No selected light.\n");
3239                 return;
3240         }
3241         VectorCopy(r_shadow_selectedlight->origin, origin);
3242         VectorCopy(r_shadow_selectedlight->angles, angles);
3243         VectorCopy(r_shadow_selectedlight->color, color);
3244         radius = r_shadow_selectedlight->radius;
3245         style = r_shadow_selectedlight->style;
3246         if (r_shadow_selectedlight->cubemapname)
3247                 strlcpy(cubemapname, r_shadow_selectedlight->cubemapname, sizeof(cubemapname));
3248         else
3249                 cubemapname[0] = 0;
3250         shadows = r_shadow_selectedlight->shadow;
3251         corona = r_shadow_selectedlight->corona;
3252         coronasizescale = r_shadow_selectedlight->coronasizescale;
3253         ambientscale = r_shadow_selectedlight->ambientscale;
3254         diffusescale = r_shadow_selectedlight->diffusescale;
3255         specularscale = r_shadow_selectedlight->specularscale;
3256         flags = r_shadow_selectedlight->flags;
3257         normalmode = (flags & LIGHTFLAG_NORMALMODE) != 0;
3258         realtimemode = (flags & LIGHTFLAG_REALTIMEMODE) != 0;
3259         if (!strcmp(Cmd_Argv(1), "origin"))
3260         {
3261                 if (Cmd_Argc() != 5)
3262                 {
3263                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
3264                         return;
3265                 }
3266                 origin[0] = atof(Cmd_Argv(2));
3267                 origin[1] = atof(Cmd_Argv(3));
3268                 origin[2] = atof(Cmd_Argv(4));
3269         }
3270         else if (!strcmp(Cmd_Argv(1), "originx"))
3271         {
3272                 if (Cmd_Argc() != 3)
3273                 {
3274                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3275                         return;
3276                 }
3277                 origin[0] = atof(Cmd_Argv(2));
3278         }
3279         else if (!strcmp(Cmd_Argv(1), "originy"))
3280         {
3281                 if (Cmd_Argc() != 3)
3282                 {
3283                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3284                         return;
3285                 }
3286                 origin[1] = atof(Cmd_Argv(2));
3287         }
3288         else if (!strcmp(Cmd_Argv(1), "originz"))
3289         {
3290                 if (Cmd_Argc() != 3)
3291                 {
3292                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3293                         return;
3294                 }
3295                 origin[2] = atof(Cmd_Argv(2));
3296         }
3297         else if (!strcmp(Cmd_Argv(1), "move"))
3298         {
3299                 if (Cmd_Argc() != 5)
3300                 {
3301                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
3302                         return;
3303                 }
3304                 origin[0] += atof(Cmd_Argv(2));
3305                 origin[1] += atof(Cmd_Argv(3));
3306                 origin[2] += atof(Cmd_Argv(4));
3307         }
3308         else if (!strcmp(Cmd_Argv(1), "movex"))
3309         {
3310                 if (Cmd_Argc() != 3)
3311                 {
3312                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3313                         return;
3314                 }
3315                 origin[0] += atof(Cmd_Argv(2));
3316         }
3317         else if (!strcmp(Cmd_Argv(1), "movey"))
3318         {
3319                 if (Cmd_Argc() != 3)
3320                 {
3321                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3322                         return;
3323                 }
3324                 origin[1] += atof(Cmd_Argv(2));
3325         }
3326         else if (!strcmp(Cmd_Argv(1), "movez"))
3327         {
3328                 if (Cmd_Argc() != 3)
3329                 {
3330                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3331                         return;
3332                 }
3333                 origin[2] += atof(Cmd_Argv(2));
3334         }
3335         else if (!strcmp(Cmd_Argv(1), "angles"))
3336         {
3337                 if (Cmd_Argc() != 5)
3338                 {
3339                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
3340                         return;
3341                 }
3342                 angles[0] = atof(Cmd_Argv(2));
3343                 angles[1] = atof(Cmd_Argv(3));
3344                 angles[2] = atof(Cmd_Argv(4));
3345         }
3346         else if (!strcmp(Cmd_Argv(1), "anglesx"))
3347         {
3348                 if (Cmd_Argc() != 3)
3349                 {
3350                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3351                         return;
3352                 }
3353                 angles[0] = atof(Cmd_Argv(2));
3354         }
3355         else if (!strcmp(Cmd_Argv(1), "anglesy"))
3356         {
3357                 if (Cmd_Argc() != 3)
3358                 {
3359                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3360                         return;
3361                 }
3362                 angles[1] = atof(Cmd_Argv(2));
3363         }
3364         else if (!strcmp(Cmd_Argv(1), "anglesz"))
3365         {
3366                 if (Cmd_Argc() != 3)
3367                 {
3368                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3369                         return;
3370                 }
3371                 angles[2] = atof(Cmd_Argv(2));
3372         }
3373         else if (!strcmp(Cmd_Argv(1), "color"))
3374         {
3375                 if (Cmd_Argc() != 5)
3376                 {
3377                         Con_Printf("usage: r_editlights_edit %s red green blue\n", Cmd_Argv(1));
3378                         return;
3379                 }
3380                 color[0] = atof(Cmd_Argv(2));
3381                 color[1] = atof(Cmd_Argv(3));
3382                 color[2] = atof(Cmd_Argv(4));
3383         }
3384         else if (!strcmp(Cmd_Argv(1), "radius"))
3385         {
3386                 if (Cmd_Argc() != 3)
3387                 {
3388                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3389                         return;
3390                 }
3391                 radius = atof(Cmd_Argv(2));
3392         }
3393         else if (!strcmp(Cmd_Argv(1), "colorscale"))
3394         {
3395                 if (Cmd_Argc() == 3)
3396                 {
3397                         double scale = atof(Cmd_Argv(2));
3398                         color[0] *= scale;
3399                         color[1] *= scale;
3400                         color[2] *= scale;
3401                 }
3402                 else
3403                 {
3404                         if (Cmd_Argc() != 5)
3405                         {
3406                                 Con_Printf("usage: r_editlights_edit %s red green blue  (OR grey instead of red green blue)\n", Cmd_Argv(1));
3407                                 return;
3408                         }
3409                         color[0] *= atof(Cmd_Argv(2));
3410                         color[1] *= atof(Cmd_Argv(3));
3411                         color[2] *= atof(Cmd_Argv(4));
3412                 }
3413         }
3414         else if (!strcmp(Cmd_Argv(1), "radiusscale") || !strcmp(Cmd_Argv(1), "sizescale"))
3415         {
3416                 if (Cmd_Argc() != 3)
3417                 {
3418                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3419                         return;
3420                 }
3421                 radius *= atof(Cmd_Argv(2));
3422         }
3423         else if (!strcmp(Cmd_Argv(1), "style"))
3424         {
3425                 if (Cmd_Argc() != 3)
3426                 {
3427                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3428                         return;
3429                 }
3430                 style = atoi(Cmd_Argv(2));
3431         }
3432         else if (!strcmp(Cmd_Argv(1), "cubemap"))
3433         {
3434                 if (Cmd_Argc() > 3)
3435                 {
3436                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3437                         return;
3438                 }
3439                 if (Cmd_Argc() == 3)
3440                         strcpy(cubemapname, Cmd_Argv(2));
3441                 else
3442                         cubemapname[0] = 0;
3443         }
3444         else if (!strcmp(Cmd_Argv(1), "shadows"))
3445         {
3446                 if (Cmd_Argc() != 3)
3447                 {
3448                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3449                         return;
3450                 }
3451                 shadows = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
3452         }
3453         else if (!strcmp(Cmd_Argv(1), "corona"))
3454         {
3455                 if (Cmd_Argc() != 3)
3456                 {
3457                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3458                         return;
3459                 }
3460                 corona = atof(Cmd_Argv(2));
3461         }
3462         else if (!strcmp(Cmd_Argv(1), "coronasize"))
3463         {
3464                 if (Cmd_Argc() != 3)
3465                 {
3466                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3467                         return;
3468                 }
3469                 coronasizescale = atof(Cmd_Argv(2));
3470         }
3471         else if (!strcmp(Cmd_Argv(1), "ambient"))
3472         {
3473                 if (Cmd_Argc() != 3)
3474                 {
3475                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3476                         return;
3477                 }
3478                 ambientscale = atof(Cmd_Argv(2));
3479         }
3480         else if (!strcmp(Cmd_Argv(1), "diffuse"))
3481         {
3482                 if (Cmd_Argc() != 3)
3483                 {
3484                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3485                         return;
3486                 }
3487                 diffusescale = atof(Cmd_Argv(2));
3488         }
3489         else if (!strcmp(Cmd_Argv(1), "specular"))
3490         {
3491                 if (Cmd_Argc() != 3)
3492                 {
3493                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3494                         return;
3495                 }
3496                 specularscale = atof(Cmd_Argv(2));
3497         }
3498         else if (!strcmp(Cmd_Argv(1), "normalmode"))
3499         {
3500                 if (Cmd_Argc() != 3)
3501                 {
3502                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3503                         return;
3504                 }
3505                 normalmode = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
3506         }
3507         else if (!strcmp(Cmd_Argv(1), "realtimemode"))
3508         {
3509                 if (Cmd_Argc() != 3)
3510                 {
3511                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
3512                         return;
3513                 }
3514                 realtimemode = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
3515         }
3516         else
3517         {
3518                 Con_Print("usage: r_editlights_edit [property] [value]\n");
3519                 Con_Print("Selected light's properties:\n");
3520                 Con_Printf("Origin       : %f %f %f\n", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);
3521                 Con_Printf("Angles       : %f %f %f\n", r_shadow_selectedlight->angles[0], r_shadow_selectedlight->angles[1], r_shadow_selectedlight->angles[2]);
3522                 Con_Printf("Color        : %f %f %f\n", r_shadow_selectedlight->color[0], r_shadow_selectedlight->color[1], r_shadow_selectedlight->color[2]);
3523                 Con_Printf("Radius       : %f\n", r_shadow_selectedlight->radius);
3524                 Con_Printf("Corona       : %f\n", r_shadow_selectedlight->corona);
3525                 Con_Printf("Style        : %i\n", r_shadow_selectedlight->style);
3526                 Con_Printf("Shadows      : %s\n", r_shadow_selectedlight->shadow ? "yes" : "no");
3527                 Con_Printf("Cubemap      : %s\n", r_shadow_selectedlight->cubemapname);
3528                 Con_Printf("CoronaSize   : %f\n", r_shadow_selectedlight->coronasizescale);
3529                 Con_Printf("Ambient      : %f\n", r_shadow_selectedlight->ambientscale);
3530                 Con_Printf("Diffuse      : %f\n", r_shadow_selectedlight->diffusescale);
3531                 Con_Printf("Specular     : %f\n", r_shadow_selectedlight->specularscale);
3532                 Con_Printf("NormalMode   : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_NORMALMODE) ? "yes" : "no");
3533                 Con_Printf("RealTimeMode : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_REALTIMEMODE) ? "yes" : "no");
3534                 return;
3535         }
3536         flags = (normalmode ? LIGHTFLAG_NORMALMODE : 0) | (realtimemode ? LIGHTFLAG_REALTIMEMODE : 0);
3537         R_Shadow_UpdateWorldLight(r_shadow_selectedlight, origin, angles, color, radius, corona, style, shadows, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
3538 }
3539
3540 void R_Shadow_EditLights_EditAll_f(void)
3541 {
3542         dlight_t *light;
3543
3544         if (!r_editlights.integer)
3545         {
3546                 Con_Print("Cannot edit lights when not in editing mode. Set r_editlights to 1.\n");
3547                 return;
3548         }
3549
3550         for (light = r_shadow_worldlightchain;light;light = light->next)
3551         {
3552                 R_Shadow_SelectLight(light);
3553                 R_Shadow_EditLights_Edit_f();
3554         }
3555 }
3556
3557 void R_Shadow_EditLights_DrawSelectedLightProperties(void)
3558 {
3559         int lightnumber, lightcount;
3560         dlight_t *light;
3561         float x, y;
3562         char temp[256];
3563         if (!r_editlights.integer)
3564                 return;
3565         x = 0;
3566         y = con_vislines;
3567         lightnumber = -1;
3568         lightcount = 0;
3569         for (lightcount = 0, light = r_shadow_worldlightchain;light;lightcount++, light = light->next)
3570                 if (light == r_shadow_selectedlight)
3571                         lightnumber = lightcount;
3572         sprintf(temp, "Cursor  %f %f %f  Total Lights %i", r_editlights_cursorlocation[0], r_editlights_cursorlocation[1], r_editlights_cursorlocation[2], lightcount);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3573         if (r_shadow_selectedlight == NULL)
3574                 return;
3575         sprintf(temp, "Light #%i properties", lightnumber);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3576         sprintf(temp, "Origin       : %f %f %f\n", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3577         sprintf(temp, "Angles       : %f %f %f\n", r_shadow_selectedlight->angles[0], r_shadow_selectedlight->angles[1], r_shadow_selectedlight->angles[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3578         sprintf(temp, "Color        : %f %f %f\n", r_shadow_selectedlight->color[0], r_shadow_selectedlight->color[1], r_shadow_selectedlight->color[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3579         sprintf(temp, "Radius       : %f\n", r_shadow_selectedlight->radius);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3580         sprintf(temp, "Corona       : %f\n", r_shadow_selectedlight->corona);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3581         sprintf(temp, "Style        : %i\n", r_shadow_selectedlight->style);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3582         sprintf(temp, "Shadows      : %s\n", r_shadow_selectedlight->shadow ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3583         sprintf(temp, "Cubemap      : %s\n", r_shadow_selectedlight->cubemapname);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3584         sprintf(temp, "CoronaSize   : %f\n", r_shadow_selectedlight->coronasizescale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3585         sprintf(temp, "Ambient      : %f\n", r_shadow_selectedlight->ambientscale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3586         sprintf(temp, "Diffuse      : %f\n", r_shadow_selectedlight->diffusescale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3587         sprintf(temp, "Specular     : %f\n", r_shadow_selectedlight->specularscale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3588         sprintf(temp, "NormalMode   : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_NORMALMODE) ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3589         sprintf(temp, "RealTimeMode : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_REALTIMEMODE) ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0);y += 8;
3590 }
3591
3592 void R_Shadow_EditLights_ToggleShadow_f(void)
3593 {
3594         if (!r_editlights.integer)
3595         {
3596                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
3597                 return;
3598         }
3599         if (!r_shadow_selectedlight)
3600         {
3601                 Con_Print("No selected light.\n");
3602                 return;
3603         }
3604         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);
3605 }
3606
3607 void R_Shadow_EditLights_ToggleCorona_f(void)
3608 {
3609         if (!r_editlights.integer)
3610         {
3611                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
3612                 return;
3613         }
3614         if (!r_shadow_selectedlight)
3615         {
3616                 Con_Print("No selected light.\n");
3617                 return;
3618         }
3619         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);
3620 }
3621
3622 void R_Shadow_EditLights_Remove_f(void)
3623 {
3624         if (!r_editlights.integer)
3625         {
3626                 Con_Print("Cannot remove light when not in editing mode.  Set r_editlights to 1.\n");
3627                 return;
3628         }
3629         if (!r_shadow_selectedlight)
3630         {
3631                 Con_Print("No selected light.\n");
3632                 return;
3633         }
3634         R_Shadow_FreeWorldLight(r_shadow_selectedlight);
3635         r_shadow_selectedlight = NULL;
3636 }
3637
3638 void R_Shadow_EditLights_Help_f(void)
3639 {
3640         Con_Print(
3641 "Documentation on r_editlights system:\n"
3642 "Settings:\n"
3643 "r_editlights : enable/disable editing mode\n"
3644 "r_editlights_cursordistance : maximum distance of cursor from eye\n"
3645 "r_editlights_cursorpushback : push back cursor this far from surface\n"
3646 "r_editlights_cursorpushoff : push cursor off surface this far\n"
3647 "r_editlights_cursorgrid : snap cursor to grid of this size\n"
3648 "r_editlights_quakelightsizescale : imported quake light entity size scaling\n"
3649 "Commands:\n"
3650 "r_editlights_help : this help\n"
3651 "r_editlights_clear : remove all lights\n"
3652 "r_editlights_reload : reload .rtlights, .lights file, or entities\n"
3653 "r_editlights_save : save to .rtlights file\n"
3654 "r_editlights_spawn : create a light with default settings\n"
3655 "r_editlights_edit command : edit selected light - more documentation below\n"
3656 "r_editlights_remove : remove selected light\n"
3657 "r_editlights_toggleshadow : toggles on/off selected light's shadow property\n"
3658 "r_editlights_importlightentitiesfrommap : reload light entities\n"
3659 "r_editlights_importlightsfile : reload .light file (produced by hlight)\n"
3660 "Edit commands:\n"
3661 "origin x y z : set light location\n"
3662 "originx x: set x component of light location\n"
3663 "originy y: set y component of light location\n"
3664 "originz z: set z component of light location\n"
3665 "move x y z : adjust light location\n"
3666 "movex x: adjust x component of light location\n"
3667 "movey y: adjust y component of light location\n"
3668 "movez z: adjust z component of light location\n"
3669 "angles x y z : set light angles\n"
3670 "anglesx x: set x component of light angles\n"
3671 "anglesy y: set y component of light angles\n"
3672 "anglesz z: set z component of light angles\n"
3673 "color r g b : set color of light (can be brighter than 1 1 1)\n"
3674 "radius radius : set radius (size) of light\n"
3675 "colorscale grey : multiply color of light (1 does nothing)\n"
3676 "colorscale r g b : multiply color of light (1 1 1 does nothing)\n"
3677 "radiusscale scale : multiply radius (size) of light (1 does nothing)\n"
3678 "sizescale scale : multiply radius (size) of light (1 does nothing)\n"
3679 "style style : set lightstyle of light (flickering patterns, switches, etc)\n"
3680 "cubemap basename : set filter cubemap of light (not yet supported)\n"
3681 "shadows 1/0 : turn on/off shadows\n"
3682 "corona n : set corona intensity\n"
3683 "coronasize n : set corona size (0-1)\n"
3684 "ambient n : set ambient intensity (0-1)\n"
3685 "diffuse n : set diffuse intensity (0-1)\n"
3686 "specular n : set specular intensity (0-1)\n"
3687 "normalmode 1/0 : turn on/off rendering of this light in rtworld 0 mode\n"
3688 "realtimemode 1/0 : turn on/off rendering of this light in rtworld 1 mode\n"
3689 "<nothing> : print light properties to console\n"
3690         );
3691 }
3692
3693 void R_Shadow_EditLights_CopyInfo_f(void)
3694 {
3695         if (!r_editlights.integer)
3696         {
3697                 Con_Print("Cannot copy light info when not in editing mode.  Set r_editlights to 1.\n");
3698                 return;
3699         }
3700         if (!r_shadow_selectedlight)
3701         {
3702                 Con_Print("No selected light.\n");
3703                 return;
3704         }
3705         VectorCopy(r_shadow_selectedlight->angles, r_shadow_bufferlight.angles);
3706         VectorCopy(r_shadow_selectedlight->color, r_shadow_bufferlight.color);
3707         r_shadow_bufferlight.radius = r_shadow_selectedlight->radius;
3708         r_shadow_bufferlight.style = r_shadow_selectedlight->style;
3709         if (r_shadow_selectedlight->cubemapname)
3710                 strcpy(r_shadow_bufferlight.cubemapname, r_shadow_selectedlight->cubemapname);
3711         else
3712                 r_shadow_bufferlight.cubemapname[0] = 0;
3713         r_shadow_bufferlight.shadow = r_shadow_selectedlight->shadow;
3714         r_shadow_bufferlight.corona = r_shadow_selectedlight->corona;
3715         r_shadow_bufferlight.coronasizescale = r_shadow_selectedlight->coronasizescale;
3716         r_shadow_bufferlight.ambientscale = r_shadow_selectedlight->ambientscale;
3717         r_shadow_bufferlight.diffusescale = r_shadow_selectedlight->diffusescale;
3718         r_shadow_bufferlight.specularscale = r_shadow_selectedlight->specularscale;
3719         r_shadow_bufferlight.flags = r_shadow_selectedlight->flags;
3720 }
3721
3722 void R_Shadow_EditLights_PasteInfo_f(void)
3723 {
3724         if (!r_editlights.integer)
3725         {
3726                 Con_Print("Cannot paste light info when not in editing mode.  Set r_editlights to 1.\n");
3727                 return;
3728         }
3729         if (!r_shadow_selectedlight)
3730         {
3731                 Con_Print("No selected light.\n");
3732                 return;
3733         }
3734         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);
3735 }
3736
3737 void R_Shadow_EditLights_Init(void)
3738 {
3739         Cvar_RegisterVariable(&r_editlights);
3740         Cvar_RegisterVariable(&r_editlights_cursordistance);
3741         Cvar_RegisterVariable(&r_editlights_cursorpushback);
3742         Cvar_RegisterVariable(&r_editlights_cursorpushoff);
3743         Cvar_RegisterVariable(&r_editlights_cursorgrid);
3744         Cvar_RegisterVariable(&r_editlights_quakelightsizescale);
3745         Cmd_AddCommand("r_editlights_help", R_Shadow_EditLights_Help_f, "prints documentation on console commands and variables in rtlight editing system");
3746         Cmd_AddCommand("r_editlights_clear", R_Shadow_EditLights_Clear_f, "removes all world lights (let there be darkness!)");
3747         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)");
3748         Cmd_AddCommand("r_editlights_save", R_Shadow_EditLights_Save_f, "save .rtlights file for current level");
3749         Cmd_AddCommand("r_editlights_spawn", R_Shadow_EditLights_Spawn_f, "creates a light with default properties (let there be light!)");
3750         Cmd_AddCommand("r_editlights_edit", R_Shadow_EditLights_Edit_f, "changes a property on the selected light");
3751         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)");
3752         Cmd_AddCommand("r_editlights_remove", R_Shadow_EditLights_Remove_f, "remove selected light");
3753         Cmd_AddCommand("r_editlights_toggleshadow", R_Shadow_EditLights_ToggleShadow_f, "toggle on/off the shadow option on the selected light");
3754         Cmd_AddCommand("r_editlights_togglecorona", R_Shadow_EditLights_ToggleCorona_f, "toggle on/off the corona option on the selected light");
3755         Cmd_AddCommand("r_editlights_importlightentitiesfrommap", R_Shadow_EditLights_ImportLightEntitiesFromMap_f, "load lights from .ent file or map entities (ignoring .rtlights or .lights file)");
3756         Cmd_AddCommand("r_editlights_importlightsfile", R_Shadow_EditLights_ImportLightsFile_f, "load lights from .lights file (ignoring .rtlights or .ent files and map entities)");
3757         Cmd_AddCommand("r_editlights_copyinfo", R_Shadow_EditLights_CopyInfo_f, "store a copy of all properties (except origin) of the selected light");
3758         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)");
3759 }
3760