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 #ifdef SUPPORTD3D
 144 #include <d3d9.h>
 145 extern LPDIRECT3DDEVICE9 vid_d3d9dev;
 146 #endif
 147
 148 extern void R_Shadow_EditLights_Init(void);
 149
 150 typedef enum r_shadow_rendermode_e
 151 {
 152         R_SHADOW_RENDERMODE_NONE,
 153         R_SHADOW_RENDERMODE_ZPASS_STENCIL,
 154         R_SHADOW_RENDERMODE_ZPASS_SEPARATESTENCIL,
 155         R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE,
 156         R_SHADOW_RENDERMODE_ZFAIL_STENCIL,
 157         R_SHADOW_RENDERMODE_ZFAIL_SEPARATESTENCIL,
 158         R_SHADOW_RENDERMODE_ZFAIL_STENCILTWOSIDE,
 159         R_SHADOW_RENDERMODE_LIGHT_VERTEX,
 160         R_SHADOW_RENDERMODE_LIGHT_VERTEX2DATTEN,
 161         R_SHADOW_RENDERMODE_LIGHT_VERTEX2D1DATTEN,
 162         R_SHADOW_RENDERMODE_LIGHT_VERTEX3DATTEN,
 163         R_SHADOW_RENDERMODE_LIGHT_GLSL,
 164         R_SHADOW_RENDERMODE_VISIBLEVOLUMES,
 165         R_SHADOW_RENDERMODE_VISIBLELIGHTING,
 166         R_SHADOW_RENDERMODE_SHADOWMAP2D
 167 }
 168 r_shadow_rendermode_t;
 169
 170 typedef enum r_shadow_shadowmode_e
 171 {
 172     R_SHADOW_SHADOWMODE_STENCIL,
 173     R_SHADOW_SHADOWMODE_SHADOWMAP2D
 174 }
 175 r_shadow_shadowmode_t;
 176
 177 r_shadow_rendermode_t r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
 178 r_shadow_rendermode_t r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_NONE;
 179 r_shadow_rendermode_t r_shadow_shadowingrendermode_zpass = R_SHADOW_RENDERMODE_NONE;
 180 r_shadow_rendermode_t r_shadow_shadowingrendermode_zfail = R_SHADOW_RENDERMODE_NONE;
 181 qboolean r_shadow_usingshadowmap2d;
 182 qboolean r_shadow_usingshadowmaportho;
 183 int r_shadow_shadowmapside;
 184 float r_shadow_shadowmap_texturescale[2];
 185 float r_shadow_shadowmap_parameters[4];
 186 #if 0
 187 int r_shadow_drawbuffer;
 188 int r_shadow_readbuffer;
 189 #endif
 190 int r_shadow_cullface_front, r_shadow_cullface_back;
 191 GLuint r_shadow_fbo2d;
 192 r_shadow_shadowmode_t r_shadow_shadowmode;
 193 int r_shadow_shadowmapfilterquality;
 194 int r_shadow_shadowmapdepthbits;
 195 int r_shadow_shadowmapmaxsize;
 196 qboolean r_shadow_shadowmapvsdct;
 197 qboolean r_shadow_shadowmapsampler;
 198 int r_shadow_shadowmappcf;
 199 int r_shadow_shadowmapborder;
 200 matrix4x4_t r_shadow_shadowmapmatrix;
 201 int r_shadow_lightscissor[4];
 202 qboolean r_shadow_usingdeferredprepass;
 203
 204 int maxshadowtriangles;
 205 int *shadowelements;
 206
 207 int maxshadowvertices;
 208 float *shadowvertex3f;
 209
 210 int maxshadowmark;
 211 int numshadowmark;
 212 int *shadowmark;
 213 int *shadowmarklist;
 214 int shadowmarkcount;
 215
 216 int maxshadowsides;
 217 int numshadowsides;
 218 unsigned char *shadowsides;
 219 int *shadowsideslist;
 220
 221 int maxvertexupdate;
 222 int *vertexupdate;
 223 int *vertexremap;
 224 int vertexupdatenum;
 225
 226 int r_shadow_buffer_numleafpvsbytes;
 227 unsigned char *r_shadow_buffer_visitingleafpvs;
 228 unsigned char *r_shadow_buffer_leafpvs;
 229 int *r_shadow_buffer_leaflist;
 230
 231 int r_shadow_buffer_numsurfacepvsbytes;
 232 unsigned char *r_shadow_buffer_surfacepvs;
 233 int *r_shadow_buffer_surfacelist;
 234 unsigned char *r_shadow_buffer_surfacesides;
 235
 236 int r_shadow_buffer_numshadowtrispvsbytes;
 237 unsigned char *r_shadow_buffer_shadowtrispvs;
 238 int r_shadow_buffer_numlighttrispvsbytes;
 239 unsigned char *r_shadow_buffer_lighttrispvs;
 240
 241 rtexturepool_t *r_shadow_texturepool;
 242 rtexture_t *r_shadow_attenuationgradienttexture;
 243 rtexture_t *r_shadow_attenuation2dtexture;
 244 rtexture_t *r_shadow_attenuation3dtexture;
 245 skinframe_t *r_shadow_lightcorona;
 246 rtexture_t *r_shadow_shadowmap2dtexture;
 247 rtexture_t *r_shadow_shadowmap2dcolortexture;
 248 rtexture_t *r_shadow_shadowmapvsdcttexture;
 249 int r_shadow_shadowmapsize; // changes for each light based on distance
 250 int r_shadow_shadowmaplod; // changes for each light based on distance
 251
 252 GLuint r_shadow_prepassgeometryfbo;
 253 GLuint r_shadow_prepasslightingfbo;
 254 int r_shadow_prepass_width;
 255 int r_shadow_prepass_height;
 256 rtexture_t *r_shadow_prepassgeometrydepthtexture;
 257 rtexture_t *r_shadow_prepassgeometrydepthcolortexture;
 258 rtexture_t *r_shadow_prepassgeometrynormalmaptexture;
 259 rtexture_t *r_shadow_prepasslightingdiffusetexture;
 260 rtexture_t *r_shadow_prepasslightingspeculartexture;
 261
 262 // lights are reloaded when this changes
 263 char r_shadow_mapname[MAX_QPATH];
 264
 265 // used only for light filters (cubemaps)
 266 rtexturepool_t *r_shadow_filters_texturepool;
 267
 268 static const GLenum r_shadow_prepasslightingdrawbuffers[2] = {GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT1_EXT};
 269
 270 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"};
 271 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"};
 272 cvar_t r_shadow_debuglight = {0, "r_shadow_debuglight", "-1", "renders only one light, for level design purposes or debugging"};
 273 cvar_t r_shadow_deferred = {CVAR_SAVE, "r_shadow_deferred", "0", "uses image-based lighting instead of geometry-based lighting, the method used renders a depth image and a normalmap image, renders lights into separate diffuse and specular images, and then combines this into the normal rendering, requires r_shadow_shadowmapping"};
 274 cvar_t r_shadow_deferred_8bitrange = {CVAR_SAVE, "r_shadow_deferred_8bitrange", "2", "dynamic range of image-based lighting when using 32bit color (does not apply to fp)"};
 275 //cvar_t r_shadow_deferred_fp = {CVAR_SAVE, "r_shadow_deferred_fp", "0", "use 16bit (1) or 32bit (2) floating point for accumulation of image-based lighting"};
 276 cvar_t r_shadow_usebihculling = {0, "r_shadow_usebihculling", "1", "use BIH (Bounding Interval Hierarchy) for culling lit surfaces instead of BSP (Binary Space Partitioning)"};
 277 cvar_t r_shadow_usenormalmap = {CVAR_SAVE, "r_shadow_usenormalmap", "1", "enables use of directional shading on lights"};
 278 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)"};
 279 cvar_t r_shadow_gloss2intensity = {0, "r_shadow_gloss2intensity", "0.125", "how bright the forced flat gloss should look if r_shadow_gloss is 2"};
 280 cvar_t r_shadow_glossintensity = {0, "r_shadow_glossintensity", "1", "how bright textured glossmaps should look if r_shadow_gloss is 1 or 2"};
 281 cvar_t r_shadow_glossexponent = {0, "r_shadow_glossexponent", "32", "how 'sharp' the gloss should appear (specular power)"};
 282 cvar_t r_shadow_gloss2exponent = {0, "r_shadow_gloss2exponent", "32", "same as r_shadow_glossexponent but for forced gloss (gloss 2) surfaces"};
 283 cvar_t r_shadow_glossexact = {0, "r_shadow_glossexact", "0", "use exact reflection math for gloss (slightly slower, but should look a tad better)"};
 284 cvar_t r_shadow_lightattenuationdividebias = {0, "r_shadow_lightattenuationdividebias", "1", "changes attenuation texture generation"};
 285 cvar_t r_shadow_lightattenuationlinearscale = {0, "r_shadow_lightattenuationlinearscale", "2", "changes attenuation texture generation"};
 286 cvar_t r_shadow_lightintensityscale = {0, "r_shadow_lightintensityscale", "1", "renders all world lights brighter or darker"};
 287 cvar_t r_shadow_lightradiusscale = {0, "r_shadow_lightradiusscale", "1", "renders all world lights larger or smaller"};
 288 cvar_t r_shadow_projectdistance = {0, "r_shadow_projectdistance", "0", "how far to cast shadows"};
 289 cvar_t r_shadow_frontsidecasting = {0, "r_shadow_frontsidecasting", "1", "whether to cast shadows from illuminated triangles (front side of model) or unlit triangles (back side of model)"};
 290 cvar_t r_shadow_realtime_dlight = {CVAR_SAVE, "r_shadow_realtime_dlight", "1", "enables rendering of dynamic lights such as explosions and rocket light"};
 291 cvar_t r_shadow_realtime_dlight_shadows = {CVAR_SAVE, "r_shadow_realtime_dlight_shadows", "1", "enables rendering of shadows from dynamic lights"};
 292 cvar_t r_shadow_realtime_dlight_svbspculling = {0, "r_shadow_realtime_dlight_svbspculling", "0", "enables svbsp optimization on dynamic lights (very slow!)"};
 293 cvar_t r_shadow_realtime_dlight_portalculling = {0, "r_shadow_realtime_dlight_portalculling", "0", "enables portal optimization on dynamic lights (slow!)"};
 294 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)"};
 295 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"};
 296 cvar_t r_shadow_realtime_world_shadows = {CVAR_SAVE, "r_shadow_realtime_world_shadows", "1", "enables rendering of shadows from world lights"};
 297 cvar_t r_shadow_realtime_world_compile = {0, "r_shadow_realtime_world_compile", "1", "enables compilation of world lights for higher performance rendering"};
 298 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"};
 299 cvar_t r_shadow_realtime_world_compilesvbsp = {0, "r_shadow_realtime_world_compilesvbsp", "1", "enables svbsp optimization during compilation (slower than compileportalculling but more exact)"};
 300 cvar_t r_shadow_realtime_world_compileportalculling = {0, "r_shadow_realtime_world_compileportalculling", "0", "enables portal-based culling optimization during compilation (overrides compilesvbsp)"};
 301 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)"};
 302 cvar_t r_shadow_shadowmapping = {CVAR_SAVE, "r_shadow_shadowmapping", "0", "enables use of shadowmapping (depth texture sampling) instead of stencil shadow volumes, requires gl_fbo 1"};
 303 cvar_t r_shadow_shadowmapping_filterquality = {CVAR_SAVE, "r_shadow_shadowmapping_filterquality", "-1", "shadowmap filter modes: -1 = auto-select, 0 = no filtering, 1 = bilinear, 2 = bilinear 2x2 blur (fast), 3 = 3x3 blur (moderate), 4 = 4x4 blur (slow)"};
 304 cvar_t r_shadow_shadowmapping_depthbits = {CVAR_SAVE, "r_shadow_shadowmapping_depthbits", "24", "requested minimum shadowmap texture depth bits"};
 305 cvar_t r_shadow_shadowmapping_vsdct = {CVAR_SAVE, "r_shadow_shadowmapping_vsdct", "1", "enables use of virtual shadow depth cube texture"};
 306 cvar_t r_shadow_shadowmapping_minsize = {CVAR_SAVE, "r_shadow_shadowmapping_minsize", "32", "shadowmap size limit"};
 307 cvar_t r_shadow_shadowmapping_maxsize = {CVAR_SAVE, "r_shadow_shadowmapping_maxsize", "512", "shadowmap size limit"};
 308 cvar_t r_shadow_shadowmapping_precision = {CVAR_SAVE, "r_shadow_shadowmapping_precision", "1", "makes shadowmaps have a maximum resolution of this number of pixels per light source radius unit such that, for example, at precision 0.5 a light with radius 200 will have a maximum resolution of 100 pixels"};
 309 //cvar_t r_shadow_shadowmapping_lod_bias = {CVAR_SAVE, "r_shadow_shadowmapping_lod_bias", "16", "shadowmap size bias"};
 310 //cvar_t r_shadow_shadowmapping_lod_scale = {CVAR_SAVE, "r_shadow_shadowmapping_lod_scale", "128", "shadowmap size scaling parameter"};
 311 cvar_t r_shadow_shadowmapping_bordersize = {CVAR_SAVE, "r_shadow_shadowmapping_bordersize", "4", "shadowmap size bias for filtering"};
 312 cvar_t r_shadow_shadowmapping_nearclip = {CVAR_SAVE, "r_shadow_shadowmapping_nearclip", "1", "shadowmap nearclip in world units"};
 313 cvar_t r_shadow_shadowmapping_bias = {CVAR_SAVE, "r_shadow_shadowmapping_bias", "0.03", "shadowmap bias parameter (this is multiplied by nearclip * 1024 / lodsize)"};
 314 cvar_t r_shadow_shadowmapping_polygonfactor = {CVAR_SAVE, "r_shadow_shadowmapping_polygonfactor", "2", "slope-dependent shadowmapping bias"};
 315 cvar_t r_shadow_shadowmapping_polygonoffset = {CVAR_SAVE, "r_shadow_shadowmapping_polygonoffset", "0", "constant shadowmapping bias"};
 316 cvar_t r_shadow_sortsurfaces = {0, "r_shadow_sortsurfaces", "1", "improve performance by sorting illuminated surfaces by texture"};
 317 cvar_t r_shadow_polygonfactor = {0, "r_shadow_polygonfactor", "0", "how much to enlarge shadow volume polygons when rendering (should be 0!)"};
 318 cvar_t r_shadow_polygonoffset = {0, "r_shadow_polygonoffset", "1", "how much to push shadow volumes into the distance when rendering, to reduce chances of zfighting artifacts (should not be less than 0)"};
 319 cvar_t r_shadow_texture3d = {0, "r_shadow_texture3d", "1", "use 3D voxel textures for spherical attenuation rather than cylindrical (does not affect OpenGL 2.0 render path)"};
 320 cvar_t r_coronas = {CVAR_SAVE, "r_coronas", "1", "brightness of corona flare effects around certain lights, 0 disables corona effects"};
 321 cvar_t r_coronas_occlusionsizescale = {CVAR_SAVE, "r_coronas_occlusionsizescale", "0.1", "size of light source for corona occlusion checksm the proportion of hidden pixels controls corona intensity"};
 322 cvar_t r_coronas_occlusionquery = {CVAR_SAVE, "r_coronas_occlusionquery", "1", "use GL_ARB_occlusion_query extension if supported (fades coronas according to visibility)"};
 323 cvar_t gl_flashblend = {CVAR_SAVE, "gl_flashblend", "0", "render bright coronas for dynamic lights instead of actual lighting, fast but ugly"};
 324 cvar_t gl_ext_separatestencil = {0, "gl_ext_separatestencil", "1", "make use of OpenGL 2.0 glStencilOpSeparate or GL_ATI_separate_stencil extension"};
 325 cvar_t gl_ext_stenciltwoside = {0, "gl_ext_stenciltwoside", "1", "make use of GL_EXT_stenciltwoside extension (NVIDIA only)"};
 326 cvar_t r_editlights = {0, "r_editlights", "0", "enables .rtlights file editing mode"};
 327 cvar_t r_editlights_cursordistance = {0, "r_editlights_cursordistance", "1024", "maximum distance of cursor from eye"};
 328 cvar_t r_editlights_cursorpushback = {0, "r_editlights_cursorpushback", "0", "how far to pull the cursor back toward the eye"};
 329 cvar_t r_editlights_cursorpushoff = {0, "r_editlights_cursorpushoff", "4", "how far to push the cursor off the impacted surface"};
 330 cvar_t r_editlights_cursorgrid = {0, "r_editlights_cursorgrid", "4", "snaps cursor to this grid size"};
 331 cvar_t r_editlights_quakelightsizescale = {CVAR_SAVE, "r_editlights_quakelightsizescale", "1", "changes size of light entities loaded from a map"};
 332
 333 // note the table actually includes one more value, just to avoid the need to clamp the distance index due to minor math error
 334 #define ATTENTABLESIZE 256
 335 // 1D gradient, 2D circle and 3D sphere attenuation textures
 336 #define ATTEN1DSIZE 32
 337 #define ATTEN2DSIZE 64
 338 #define ATTEN3DSIZE 32
 339
 340 static float r_shadow_attendividebias; // r_shadow_lightattenuationdividebias
 341 static float r_shadow_attenlinearscale; // r_shadow_lightattenuationlinearscale
 342 static float r_shadow_attentable[ATTENTABLESIZE+1];
 343
 344 rtlight_t *r_shadow_compilingrtlight;
 345 static memexpandablearray_t r_shadow_worldlightsarray;
 346 dlight_t *r_shadow_selectedlight;
 347 dlight_t r_shadow_bufferlight;
 348 vec3_t r_editlights_cursorlocation;
 349 qboolean r_editlights_lockcursor;
 350
 351 extern int con_vislines;
 352
 353 void R_Shadow_UncompileWorldLights(void);
 354 void R_Shadow_ClearWorldLights(void);
 355 void R_Shadow_SaveWorldLights(void);
 356 void R_Shadow_LoadWorldLights(void);
 357 void R_Shadow_LoadLightsFile(void);
 358 void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void);
 359 void R_Shadow_EditLights_Reload_f(void);
 360 void R_Shadow_ValidateCvars(void);
 361 static void R_Shadow_MakeTextures(void);
 362
 363 #define EDLIGHTSPRSIZE                  8
 364 skinframe_t *r_editlights_sprcursor;
 365 skinframe_t *r_editlights_sprlight;
 366 skinframe_t *r_editlights_sprnoshadowlight;
 367 skinframe_t *r_editlights_sprcubemaplight;
 368 skinframe_t *r_editlights_sprcubemapnoshadowlight;
 369 skinframe_t *r_editlights_sprselection;
 370
 371 void R_Shadow_SetShadowMode(void)
 372 {
 373         r_shadow_shadowmapmaxsize = bound(1, r_shadow_shadowmapping_maxsize.integer, (int)vid.maxtexturesize_2d / 4);
 374         r_shadow_shadowmapvsdct = r_shadow_shadowmapping_vsdct.integer != 0 && vid.renderpath == RENDERPATH_GL20;
 375         r_shadow_shadowmapfilterquality = r_shadow_shadowmapping_filterquality.integer;
 376         r_shadow_shadowmapdepthbits = r_shadow_shadowmapping_depthbits.integer;
 377         r_shadow_shadowmapborder = bound(0, r_shadow_shadowmapping_bordersize.integer, 16);
 378         r_shadow_shadowmaplod = -1;
 379         r_shadow_shadowmapsize = 0;
 380         r_shadow_shadowmapsampler = false;
 381         r_shadow_shadowmappcf = 0;
 382         r_shadow_shadowmode = R_SHADOW_SHADOWMODE_STENCIL;
 383         if ((r_shadow_shadowmapping.integer || r_shadow_deferred.integer) && vid.support.ext_framebuffer_object)
 384         {
 385                 switch(vid.renderpath)
 386                 {
 387                 case RENDERPATH_GL20:
 388                         if(r_shadow_shadowmapfilterquality < 0)
 389                         {
 390                                 if(vid.support.amd_texture_texture4 || vid.support.arb_texture_gather)
 391                                         r_shadow_shadowmappcf = 1;
 392                                 else if(strstr(gl_vendor, "NVIDIA") || strstr(gl_renderer, "Radeon HD"))
 393                                 {
 394                                         r_shadow_shadowmapsampler = vid.support.arb_shadow;
 395                                         r_shadow_shadowmappcf = 1;
 396                                 }
 397                                 else if(strstr(gl_vendor, "ATI"))
 398                                         r_shadow_shadowmappcf = 1;
 399                                 else
 400                                         r_shadow_shadowmapsampler = vid.support.arb_shadow;
 401                         }
 402                         else
 403                         {
 404                                 switch (r_shadow_shadowmapfilterquality)
 405                                 {
 406                                 case 1:
 407                                         r_shadow_shadowmapsampler = vid.support.arb_shadow;
 408                                         break;
 409                                 case 2:
 410                                         r_shadow_shadowmapsampler = vid.support.arb_shadow;
 411                                         r_shadow_shadowmappcf = 1;
 412                                         break;
 413                                 case 3:
 414                                         r_shadow_shadowmappcf = 1;
 415                                         break;
 416                                 case 4:
 417                                         r_shadow_shadowmappcf = 2;
 418                                         break;
 419                                 }
 420                         }
 421                         r_shadow_shadowmode = R_SHADOW_SHADOWMODE_SHADOWMAP2D;
 422                         // Cg has very little choice in depth texture sampling
 423                         if (vid.cgcontext)
 424                                 r_shadow_shadowmapsampler = false;
 425                         break;
 426                 case RENDERPATH_CGGL:
 427                 case RENDERPATH_D3D9:
 428                 case RENDERPATH_D3D10:
 429                 case RENDERPATH_D3D11:
 430                         r_shadow_shadowmapsampler = false;
 431                         r_shadow_shadowmappcf = 1;
 432                         r_shadow_shadowmode = R_SHADOW_SHADOWMODE_SHADOWMAP2D;
 433                         break;
 434                 case RENDERPATH_GL13:
 435                         break;
 436                 case RENDERPATH_GL11:
 437                         break;
 438                 }
 439         }
 440 }
 441
 442 qboolean R_Shadow_ShadowMappingEnabled(void)
 443 {
 444         switch (r_shadow_shadowmode)
 445         {
 446         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
 447                 return true;
 448         default:
 449                 return false;
 450         }
 451 }
 452
 453 void R_Shadow_FreeShadowMaps(void)
 454 {
 455         R_Shadow_SetShadowMode();
 456
 457         R_Mesh_DestroyFramebufferObject(r_shadow_fbo2d);
 458
 459         r_shadow_fbo2d = 0;
 460
 461         if (r_shadow_shadowmap2dtexture)
 462                 R_FreeTexture(r_shadow_shadowmap2dtexture);
 463         r_shadow_shadowmap2dtexture = NULL;
 464
 465         if (r_shadow_shadowmap2dcolortexture)
 466                 R_FreeTexture(r_shadow_shadowmap2dcolortexture);
 467         r_shadow_shadowmap2dcolortexture = NULL;
 468
 469         if (r_shadow_shadowmapvsdcttexture)
 470                 R_FreeTexture(r_shadow_shadowmapvsdcttexture);
 471         r_shadow_shadowmapvsdcttexture = NULL;
 472 }
 473
 474 void r_shadow_start(void)
 475 {
 476         // allocate vertex processing arrays
 477         r_shadow_attenuationgradienttexture = NULL;
 478         r_shadow_attenuation2dtexture = NULL;
 479         r_shadow_attenuation3dtexture = NULL;
 480         r_shadow_shadowmode = R_SHADOW_SHADOWMODE_STENCIL;
 481         r_shadow_shadowmap2dtexture = NULL;
 482         r_shadow_shadowmap2dcolortexture = NULL;
 483         r_shadow_shadowmapvsdcttexture = NULL;
 484         r_shadow_shadowmapmaxsize = 0;
 485         r_shadow_shadowmapsize = 0;
 486         r_shadow_shadowmaplod = 0;
 487         r_shadow_shadowmapfilterquality = -1;
 488         r_shadow_shadowmapdepthbits = 0;
 489         r_shadow_shadowmapvsdct = false;
 490         r_shadow_shadowmapsampler = false;
 491         r_shadow_shadowmappcf = 0;
 492         r_shadow_fbo2d = 0;
 493
 494         R_Shadow_FreeShadowMaps();
 495
 496         r_shadow_texturepool = NULL;
 497         r_shadow_filters_texturepool = NULL;
 498         R_Shadow_ValidateCvars();
 499         R_Shadow_MakeTextures();
 500         maxshadowtriangles = 0;
 501         shadowelements = NULL;
 502         maxshadowvertices = 0;
 503         shadowvertex3f = NULL;
 504         maxvertexupdate = 0;
 505         vertexupdate = NULL;
 506         vertexremap = NULL;
 507         vertexupdatenum = 0;
 508         maxshadowmark = 0;
 509         numshadowmark = 0;
 510         shadowmark = NULL;
 511         shadowmarklist = NULL;
 512         shadowmarkcount = 0;
 513         maxshadowsides = 0;
 514         numshadowsides = 0;
 515         shadowsides = NULL;
 516         shadowsideslist = NULL;
 517         r_shadow_buffer_numleafpvsbytes = 0;
 518         r_shadow_buffer_visitingleafpvs = NULL;
 519         r_shadow_buffer_leafpvs = NULL;
 520         r_shadow_buffer_leaflist = NULL;
 521         r_shadow_buffer_numsurfacepvsbytes = 0;
 522         r_shadow_buffer_surfacepvs = NULL;
 523         r_shadow_buffer_surfacelist = NULL;
 524         r_shadow_buffer_surfacesides = NULL;
 525         r_shadow_buffer_numshadowtrispvsbytes = 0;
 526         r_shadow_buffer_shadowtrispvs = NULL;
 527         r_shadow_buffer_numlighttrispvsbytes = 0;
 528         r_shadow_buffer_lighttrispvs = NULL;
 529
 530         r_shadow_usingdeferredprepass = false;
 531         r_shadow_prepass_width = r_shadow_prepass_height = 0;
 532 }
 533
 534 static void R_Shadow_FreeDeferred(void);
 535 void r_shadow_shutdown(void)
 536 {
 537         CHECKGLERROR
 538         R_Shadow_UncompileWorldLights();
 539
 540         R_Shadow_FreeShadowMaps();
 541
 542         r_shadow_usingdeferredprepass = false;
 543         if (r_shadow_prepass_width)
 544                 R_Shadow_FreeDeferred();
 545         r_shadow_prepass_width = r_shadow_prepass_height = 0;
 546
 547         CHECKGLERROR
 548         r_shadow_attenuationgradienttexture = NULL;
 549         r_shadow_attenuation2dtexture = NULL;
 550         r_shadow_attenuation3dtexture = NULL;
 551         R_FreeTexturePool(&r_shadow_texturepool);
 552         R_FreeTexturePool(&r_shadow_filters_texturepool);
 553         maxshadowtriangles = 0;
 554         if (shadowelements)
 555                 Mem_Free(shadowelements);
 556         shadowelements = NULL;
 557         if (shadowvertex3f)
 558                 Mem_Free(shadowvertex3f);
 559         shadowvertex3f = NULL;
 560         maxvertexupdate = 0;
 561         if (vertexupdate)
 562                 Mem_Free(vertexupdate);
 563         vertexupdate = NULL;
 564         if (vertexremap)
 565                 Mem_Free(vertexremap);
 566         vertexremap = NULL;
 567         vertexupdatenum = 0;
 568         maxshadowmark = 0;
 569         numshadowmark = 0;
 570         if (shadowmark)
 571                 Mem_Free(shadowmark);
 572         shadowmark = NULL;
 573         if (shadowmarklist)
 574                 Mem_Free(shadowmarklist);
 575         shadowmarklist = NULL;
 576         shadowmarkcount = 0;
 577         maxshadowsides = 0;
 578         numshadowsides = 0;
 579         if (shadowsides)
 580                 Mem_Free(shadowsides);
 581         shadowsides = NULL;
 582         if (shadowsideslist)
 583                 Mem_Free(shadowsideslist);
 584         shadowsideslist = NULL;
 585         r_shadow_buffer_numleafpvsbytes = 0;
 586         if (r_shadow_buffer_visitingleafpvs)
 587                 Mem_Free(r_shadow_buffer_visitingleafpvs);
 588         r_shadow_buffer_visitingleafpvs = NULL;
 589         if (r_shadow_buffer_leafpvs)
 590                 Mem_Free(r_shadow_buffer_leafpvs);
 591         r_shadow_buffer_leafpvs = NULL;
 592         if (r_shadow_buffer_leaflist)
 593                 Mem_Free(r_shadow_buffer_leaflist);
 594         r_shadow_buffer_leaflist = NULL;
 595         r_shadow_buffer_numsurfacepvsbytes = 0;
 596         if (r_shadow_buffer_surfacepvs)
 597                 Mem_Free(r_shadow_buffer_surfacepvs);
 598         r_shadow_buffer_surfacepvs = NULL;
 599         if (r_shadow_buffer_surfacelist)
 600                 Mem_Free(r_shadow_buffer_surfacelist);
 601         r_shadow_buffer_surfacelist = NULL;
 602         if (r_shadow_buffer_surfacesides)
 603                 Mem_Free(r_shadow_buffer_surfacesides);
 604         r_shadow_buffer_surfacesides = NULL;
 605         r_shadow_buffer_numshadowtrispvsbytes = 0;
 606         if (r_shadow_buffer_shadowtrispvs)
 607                 Mem_Free(r_shadow_buffer_shadowtrispvs);
 608         r_shadow_buffer_numlighttrispvsbytes = 0;
 609         if (r_shadow_buffer_lighttrispvs)
 610                 Mem_Free(r_shadow_buffer_lighttrispvs);
 611 }
 612
 613 void r_shadow_newmap(void)
 614 {
 615         if (r_shadow_lightcorona)                 R_SkinFrame_MarkUsed(r_shadow_lightcorona);
 616         if (r_editlights_sprcursor)               R_SkinFrame_MarkUsed(r_editlights_sprcursor);
 617         if (r_editlights_sprlight)                R_SkinFrame_MarkUsed(r_editlights_sprlight);
 618         if (r_editlights_sprnoshadowlight)        R_SkinFrame_MarkUsed(r_editlights_sprnoshadowlight);
 619         if (r_editlights_sprcubemaplight)         R_SkinFrame_MarkUsed(r_editlights_sprcubemaplight);
 620         if (r_editlights_sprcubemapnoshadowlight) R_SkinFrame_MarkUsed(r_editlights_sprcubemapnoshadowlight);
 621         if (r_editlights_sprselection)            R_SkinFrame_MarkUsed(r_editlights_sprselection);
 622         if (strncmp(cl.worldname, r_shadow_mapname, sizeof(r_shadow_mapname)))
 623                 R_Shadow_EditLights_Reload_f();
 624 }
 625
 626 void R_Shadow_Init(void)
 627 {
 628         Cvar_RegisterVariable(&r_shadow_bumpscale_basetexture);
 629         Cvar_RegisterVariable(&r_shadow_bumpscale_bumpmap);
 630         Cvar_RegisterVariable(&r_shadow_usebihculling);
 631         Cvar_RegisterVariable(&r_shadow_usenormalmap);
 632         Cvar_RegisterVariable(&r_shadow_debuglight);
 633         Cvar_RegisterVariable(&r_shadow_deferred);
 634         Cvar_RegisterVariable(&r_shadow_deferred_8bitrange);
 635 //      Cvar_RegisterVariable(&r_shadow_deferred_fp);
 636         Cvar_RegisterVariable(&r_shadow_gloss);
 637         Cvar_RegisterVariable(&r_shadow_gloss2intensity);
 638         Cvar_RegisterVariable(&r_shadow_glossintensity);
 639         Cvar_RegisterVariable(&r_shadow_glossexponent);
 640         Cvar_RegisterVariable(&r_shadow_gloss2exponent);
 641         Cvar_RegisterVariable(&r_shadow_glossexact);
 642         Cvar_RegisterVariable(&r_shadow_lightattenuationdividebias);
 643         Cvar_RegisterVariable(&r_shadow_lightattenuationlinearscale);
 644         Cvar_RegisterVariable(&r_shadow_lightintensityscale);
 645         Cvar_RegisterVariable(&r_shadow_lightradiusscale);
 646         Cvar_RegisterVariable(&r_shadow_projectdistance);
 647         Cvar_RegisterVariable(&r_shadow_frontsidecasting);
 648         Cvar_RegisterVariable(&r_shadow_realtime_dlight);
 649         Cvar_RegisterVariable(&r_shadow_realtime_dlight_shadows);
 650         Cvar_RegisterVariable(&r_shadow_realtime_dlight_svbspculling);
 651         Cvar_RegisterVariable(&r_shadow_realtime_dlight_portalculling);
 652         Cvar_RegisterVariable(&r_shadow_realtime_world);
 653         Cvar_RegisterVariable(&r_shadow_realtime_world_lightmaps);
 654         Cvar_RegisterVariable(&r_shadow_realtime_world_shadows);
 655         Cvar_RegisterVariable(&r_shadow_realtime_world_compile);
 656         Cvar_RegisterVariable(&r_shadow_realtime_world_compileshadow);
 657         Cvar_RegisterVariable(&r_shadow_realtime_world_compilesvbsp);
 658         Cvar_RegisterVariable(&r_shadow_realtime_world_compileportalculling);
 659         Cvar_RegisterVariable(&r_shadow_scissor);
 660         Cvar_RegisterVariable(&r_shadow_shadowmapping);
 661         Cvar_RegisterVariable(&r_shadow_shadowmapping_vsdct);
 662         Cvar_RegisterVariable(&r_shadow_shadowmapping_filterquality);
 663         Cvar_RegisterVariable(&r_shadow_shadowmapping_depthbits);
 664         Cvar_RegisterVariable(&r_shadow_shadowmapping_precision);
 665         Cvar_RegisterVariable(&r_shadow_shadowmapping_maxsize);
 666         Cvar_RegisterVariable(&r_shadow_shadowmapping_minsize);
 667 //      Cvar_RegisterVariable(&r_shadow_shadowmapping_lod_bias);
 668 //      Cvar_RegisterVariable(&r_shadow_shadowmapping_lod_scale);
 669         Cvar_RegisterVariable(&r_shadow_shadowmapping_bordersize);
 670         Cvar_RegisterVariable(&r_shadow_shadowmapping_nearclip);
 671         Cvar_RegisterVariable(&r_shadow_shadowmapping_bias);
 672         Cvar_RegisterVariable(&r_shadow_shadowmapping_polygonfactor);
 673         Cvar_RegisterVariable(&r_shadow_shadowmapping_polygonoffset);
 674         Cvar_RegisterVariable(&r_shadow_sortsurfaces);
 675         Cvar_RegisterVariable(&r_shadow_polygonfactor);
 676         Cvar_RegisterVariable(&r_shadow_polygonoffset);
 677         Cvar_RegisterVariable(&r_shadow_texture3d);
 678         Cvar_RegisterVariable(&r_coronas);
 679         Cvar_RegisterVariable(&r_coronas_occlusionsizescale);
 680         Cvar_RegisterVariable(&r_coronas_occlusionquery);
 681         Cvar_RegisterVariable(&gl_flashblend);
 682         Cvar_RegisterVariable(&gl_ext_separatestencil);
 683         Cvar_RegisterVariable(&gl_ext_stenciltwoside);
 684         if (gamemode == GAME_TENEBRAE)
 685         {
 686                 Cvar_SetValue("r_shadow_gloss", 2);
 687                 Cvar_SetValue("r_shadow_bumpscale_basetexture", 4);
 688         }
 689         R_Shadow_EditLights_Init();
 690         Mem_ExpandableArray_NewArray(&r_shadow_worldlightsarray, r_main_mempool, sizeof(dlight_t), 128);
 691         maxshadowtriangles = 0;
 692         shadowelements = NULL;
 693         maxshadowvertices = 0;
 694         shadowvertex3f = NULL;
 695         maxvertexupdate = 0;
 696         vertexupdate = NULL;
 697         vertexremap = NULL;
 698         vertexupdatenum = 0;
 699         maxshadowmark = 0;
 700         numshadowmark = 0;
 701         shadowmark = NULL;
 702         shadowmarklist = NULL;
 703         shadowmarkcount = 0;
 704         maxshadowsides = 0;
 705         numshadowsides = 0;
 706         shadowsides = NULL;
 707         shadowsideslist = NULL;
 708         r_shadow_buffer_numleafpvsbytes = 0;
 709         r_shadow_buffer_visitingleafpvs = NULL;
 710         r_shadow_buffer_leafpvs = NULL;
 711         r_shadow_buffer_leaflist = NULL;
 712         r_shadow_buffer_numsurfacepvsbytes = 0;
 713         r_shadow_buffer_surfacepvs = NULL;
 714         r_shadow_buffer_surfacelist = NULL;
 715         r_shadow_buffer_surfacesides = NULL;
 716         r_shadow_buffer_shadowtrispvs = NULL;
 717         r_shadow_buffer_lighttrispvs = NULL;
 718         R_RegisterModule("R_Shadow", r_shadow_start, r_shadow_shutdown, r_shadow_newmap, NULL, NULL);
 719 }
 720
 721 matrix4x4_t matrix_attenuationxyz =
 722 {
 723         {
 724                 {0.5, 0.0, 0.0, 0.5},
 725                 {0.0, 0.5, 0.0, 0.5},
 726                 {0.0, 0.0, 0.5, 0.5},
 727                 {0.0, 0.0, 0.0, 1.0}
 728         }
 729 };
 730
 731 matrix4x4_t matrix_attenuationz =
 732 {
 733         {
 734                 {0.0, 0.0, 0.5, 0.5},
 735                 {0.0, 0.0, 0.0, 0.5},
 736                 {0.0, 0.0, 0.0, 0.5},
 737                 {0.0, 0.0, 0.0, 1.0}
 738         }
 739 };
 740
 741 void R_Shadow_ResizeShadowArrays(int numvertices, int numtriangles, int vertscale, int triscale)
 742 {
 743         numvertices = ((numvertices + 255) & ~255) * vertscale;
 744         numtriangles = ((numtriangles + 255) & ~255) * triscale;
 745         // make sure shadowelements is big enough for this volume
 746         if (maxshadowtriangles < numtriangles)
 747         {
 748                 maxshadowtriangles = numtriangles;
 749                 if (shadowelements)
 750                         Mem_Free(shadowelements);
 751                 shadowelements = (int *)Mem_Alloc(r_main_mempool, maxshadowtriangles * sizeof(int[3]));
 752         }
 753         // make sure shadowvertex3f is big enough for this volume
 754         if (maxshadowvertices < numvertices)
 755         {
 756                 maxshadowvertices = numvertices;
 757                 if (shadowvertex3f)
 758                         Mem_Free(shadowvertex3f);
 759                 shadowvertex3f = (float *)Mem_Alloc(r_main_mempool, maxshadowvertices * sizeof(float[3]));
 760         }
 761 }
 762
 763 static void R_Shadow_EnlargeLeafSurfaceTrisBuffer(int numleafs, int numsurfaces, int numshadowtriangles, int numlighttriangles)
 764 {
 765         int numleafpvsbytes = (((numleafs + 7) >> 3) + 255) & ~255;
 766         int numsurfacepvsbytes = (((numsurfaces + 7) >> 3) + 255) & ~255;
 767         int numshadowtrispvsbytes = (((numshadowtriangles + 7) >> 3) + 255) & ~255;
 768         int numlighttrispvsbytes = (((numlighttriangles + 7) >> 3) + 255) & ~255;
 769         if (r_shadow_buffer_numleafpvsbytes < numleafpvsbytes)
 770         {
 771                 if (r_shadow_buffer_visitingleafpvs)
 772                         Mem_Free(r_shadow_buffer_visitingleafpvs);
 773                 if (r_shadow_buffer_leafpvs)
 774                         Mem_Free(r_shadow_buffer_leafpvs);
 775                 if (r_shadow_buffer_leaflist)
 776                         Mem_Free(r_shadow_buffer_leaflist);
 777                 r_shadow_buffer_numleafpvsbytes = numleafpvsbytes;
 778                 r_shadow_buffer_visitingleafpvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numleafpvsbytes);
 779                 r_shadow_buffer_leafpvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numleafpvsbytes);
 780                 r_shadow_buffer_leaflist = (int *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numleafpvsbytes * 8 * sizeof(*r_shadow_buffer_leaflist));
 781         }
 782         if (r_shadow_buffer_numsurfacepvsbytes < numsurfacepvsbytes)
 783         {
 784                 if (r_shadow_buffer_surfacepvs)
 785                         Mem_Free(r_shadow_buffer_surfacepvs);
 786                 if (r_shadow_buffer_surfacelist)
 787                         Mem_Free(r_shadow_buffer_surfacelist);
 788                 if (r_shadow_buffer_surfacesides)
 789                         Mem_Free(r_shadow_buffer_surfacesides);
 790                 r_shadow_buffer_numsurfacepvsbytes = numsurfacepvsbytes;
 791                 r_shadow_buffer_surfacepvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numsurfacepvsbytes);
 792                 r_shadow_buffer_surfacelist = (int *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numsurfacepvsbytes * 8 * sizeof(*r_shadow_buffer_surfacelist));
 793                 r_shadow_buffer_surfacesides = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numsurfacepvsbytes * 8 * sizeof(*r_shadow_buffer_surfacelist));
 794         }
 795         if (r_shadow_buffer_numshadowtrispvsbytes < numshadowtrispvsbytes)
 796         {
 797                 if (r_shadow_buffer_shadowtrispvs)
 798                         Mem_Free(r_shadow_buffer_shadowtrispvs);
 799                 r_shadow_buffer_numshadowtrispvsbytes = numshadowtrispvsbytes;
 800                 r_shadow_buffer_shadowtrispvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numshadowtrispvsbytes);
 801         }
 802         if (r_shadow_buffer_numlighttrispvsbytes < numlighttrispvsbytes)
 803         {
 804                 if (r_shadow_buffer_lighttrispvs)
 805                         Mem_Free(r_shadow_buffer_lighttrispvs);
 806                 r_shadow_buffer_numlighttrispvsbytes = numlighttrispvsbytes;
 807                 r_shadow_buffer_lighttrispvs = (unsigned char *)Mem_Alloc(r_main_mempool, r_shadow_buffer_numlighttrispvsbytes);
 808         }
 809 }
 810
 811 void R_Shadow_PrepareShadowMark(int numtris)
 812 {
 813         // make sure shadowmark is big enough for this volume
 814         if (maxshadowmark < numtris)
 815         {
 816                 maxshadowmark = numtris;
 817                 if (shadowmark)
 818                         Mem_Free(shadowmark);
 819                 if (shadowmarklist)
 820                         Mem_Free(shadowmarklist);
 821                 shadowmark = (int *)Mem_Alloc(r_main_mempool, maxshadowmark * sizeof(*shadowmark));
 822                 shadowmarklist = (int *)Mem_Alloc(r_main_mempool, maxshadowmark * sizeof(*shadowmarklist));
 823                 shadowmarkcount = 0;
 824         }
 825         shadowmarkcount++;
 826         // if shadowmarkcount wrapped we clear the array and adjust accordingly
 827         if (shadowmarkcount == 0)
 828         {
 829                 shadowmarkcount = 1;
 830                 memset(shadowmark, 0, maxshadowmark * sizeof(*shadowmark));
 831         }
 832         numshadowmark = 0;
 833 }
 834
 835 void R_Shadow_PrepareShadowSides(int numtris)
 836 {
 837     if (maxshadowsides < numtris)
 838     {
 839         maxshadowsides = numtris;
 840         if (shadowsides)
 841                         Mem_Free(shadowsides);
 842                 if (shadowsideslist)
 843                         Mem_Free(shadowsideslist);
 844                 shadowsides = (unsigned char *)Mem_Alloc(r_main_mempool, maxshadowsides * sizeof(*shadowsides));
 845                 shadowsideslist = (int *)Mem_Alloc(r_main_mempool, maxshadowsides * sizeof(*shadowsideslist));
 846         }
 847         numshadowsides = 0;
 848 }
 849
 850 static int R_Shadow_ConstructShadowVolume_ZFail(int innumvertices, int innumtris, const int *inelement3i, const int *inneighbor3i, const float *invertex3f, int *outnumvertices, int *outelement3i, float *outvertex3f, const float *projectorigin, const float *projectdirection, float projectdistance, int numshadowmarktris, const int *shadowmarktris)
 851 {
 852         int i, j;
 853         int outtriangles = 0, outvertices = 0;
 854         const int *element;
 855         const float *vertex;
 856         float ratio, direction[3], projectvector[3];
 857
 858         if (projectdirection)
 859                 VectorScale(projectdirection, projectdistance, projectvector);
 860         else
 861                 VectorClear(projectvector);
 862
 863         // create the vertices
 864         if (projectdirection)
 865         {
 866                 for (i = 0;i < numshadowmarktris;i++)
 867                 {
 868                         element = inelement3i + shadowmarktris[i] * 3;
 869                         for (j = 0;j < 3;j++)
 870                         {
 871                                 if (vertexupdate[element[j]] != vertexupdatenum)
 872                                 {
 873                                         vertexupdate[element[j]] = vertexupdatenum;
 874                                         vertexremap[element[j]] = outvertices;
 875                                         vertex = invertex3f + element[j] * 3;
 876                                         // project one copy of the vertex according to projectvector
 877                                         VectorCopy(vertex, outvertex3f);
 878                                         VectorAdd(vertex, projectvector, (outvertex3f + 3));
 879                                         outvertex3f += 6;
 880                                         outvertices += 2;
 881                                 }
 882                         }
 883                 }
 884         }
 885         else
 886         {
 887                 for (i = 0;i < numshadowmarktris;i++)
 888                 {
 889                         element = inelement3i + shadowmarktris[i] * 3;
 890                         for (j = 0;j < 3;j++)
 891                         {
 892                                 if (vertexupdate[element[j]] != vertexupdatenum)
 893                                 {
 894                                         vertexupdate[element[j]] = vertexupdatenum;
 895                                         vertexremap[element[j]] = outvertices;
 896                                         vertex = invertex3f + element[j] * 3;
 897                                         // project one copy of the vertex to the sphere radius of the light
 898                                         // (FIXME: would projecting it to the light box be better?)
 899                                         VectorSubtract(vertex, projectorigin, direction);
 900                                         ratio = projectdistance / VectorLength(direction);
 901                                         VectorCopy(vertex, outvertex3f);
 902                                         VectorMA(projectorigin, ratio, direction, (outvertex3f + 3));
 903                                         outvertex3f += 6;
 904                                         outvertices += 2;
 905                                 }
 906                         }
 907                 }
 908         }
 909
 910         if (r_shadow_frontsidecasting.integer)
 911         {
 912                 for (i = 0;i < numshadowmarktris;i++)
 913                 {
 914                         int remappedelement[3];
 915                         int markindex;
 916                         const int *neighbortriangle;
 917
 918                         markindex = shadowmarktris[i] * 3;
 919                         element = inelement3i + markindex;
 920                         neighbortriangle = inneighbor3i + markindex;
 921                         // output the front and back triangles
 922                         outelement3i[0] = vertexremap[element[0]];
 923                         outelement3i[1] = vertexremap[element[1]];
 924                         outelement3i[2] = vertexremap[element[2]];
 925                         outelement3i[3] = vertexremap[element[2]] + 1;
 926                         outelement3i[4] = vertexremap[element[1]] + 1;
 927                         outelement3i[5] = vertexremap[element[0]] + 1;
 928
 929                         outelement3i += 6;
 930                         outtriangles += 2;
 931                         // output the sides (facing outward from this triangle)
 932                         if (shadowmark[neighbortriangle[0]] != shadowmarkcount)
 933                         {
 934                                 remappedelement[0] = vertexremap[element[0]];
 935                                 remappedelement[1] = vertexremap[element[1]];
 936                                 outelement3i[0] = remappedelement[1];
 937                                 outelement3i[1] = remappedelement[0];
 938                                 outelement3i[2] = remappedelement[0] + 1;
 939                                 outelement3i[3] = remappedelement[1];
 940                                 outelement3i[4] = remappedelement[0] + 1;
 941                                 outelement3i[5] = remappedelement[1] + 1;
 942
 943                                 outelement3i += 6;
 944                                 outtriangles += 2;
 945                         }
 946                         if (shadowmark[neighbortriangle[1]] != shadowmarkcount)
 947                         {
 948                                 remappedelement[1] = vertexremap[element[1]];
 949                                 remappedelement[2] = vertexremap[element[2]];
 950                                 outelement3i[0] = remappedelement[2];
 951                                 outelement3i[1] = remappedelement[1];
 952                                 outelement3i[2] = remappedelement[1] + 1;
 953                                 outelement3i[3] = remappedelement[2];
 954                                 outelement3i[4] = remappedelement[1] + 1;
 955                                 outelement3i[5] = remappedelement[2] + 1;
 956
 957                                 outelement3i += 6;
 958                                 outtriangles += 2;
 959                         }
 960                         if (shadowmark[neighbortriangle[2]] != shadowmarkcount)
 961                         {
 962                                 remappedelement[0] = vertexremap[element[0]];
 963                                 remappedelement[2] = vertexremap[element[2]];
 964                                 outelement3i[0] = remappedelement[0];
 965                                 outelement3i[1] = remappedelement[2];
 966                                 outelement3i[2] = remappedelement[2] + 1;
 967                                 outelement3i[3] = remappedelement[0];
 968                                 outelement3i[4] = remappedelement[2] + 1;
 969                                 outelement3i[5] = remappedelement[0] + 1;
 970
 971                                 outelement3i += 6;
 972                                 outtriangles += 2;
 973                         }
 974                 }
 975         }
 976         else
 977         {
 978                 for (i = 0;i < numshadowmarktris;i++)
 979                 {
 980                         int remappedelement[3];
 981                         int markindex;
 982                         const int *neighbortriangle;
 983
 984                         markindex = shadowmarktris[i] * 3;
 985                         element = inelement3i + markindex;
 986                         neighbortriangle = inneighbor3i + markindex;
 987                         // output the front and back triangles
 988                         outelement3i[0] = vertexremap[element[2]];
 989                         outelement3i[1] = vertexremap[element[1]];
 990                         outelement3i[2] = vertexremap[element[0]];
 991                         outelement3i[3] = vertexremap[element[0]] + 1;
 992                         outelement3i[4] = vertexremap[element[1]] + 1;
 993                         outelement3i[5] = vertexremap[element[2]] + 1;
 994
 995                         outelement3i += 6;
 996                         outtriangles += 2;
 997                         // output the sides (facing outward from this triangle)
 998                         if (shadowmark[neighbortriangle[0]] != shadowmarkcount)
 999                         {
1000                                 remappedelement[0] = vertexremap[element[0]];
1001                                 remappedelement[1] = vertexremap[element[1]];
1002                                 outelement3i[0] = remappedelement[0];
1003                                 outelement3i[1] = remappedelement[1];
1004                                 outelement3i[2] = remappedelement[1] + 1;
1005                                 outelement3i[3] = remappedelement[0];
1006                                 outelement3i[4] = remappedelement[1] + 1;
1007                                 outelement3i[5] = remappedelement[0] + 1;
1008
1009                                 outelement3i += 6;
1010                                 outtriangles += 2;
1011                         }
1012                         if (shadowmark[neighbortriangle[1]] != shadowmarkcount)
1013                         {
1014                                 remappedelement[1] = vertexremap[element[1]];
1015                                 remappedelement[2] = vertexremap[element[2]];
1016                                 outelement3i[0] = remappedelement[1];
1017                                 outelement3i[1] = remappedelement[2];
1018                                 outelement3i[2] = remappedelement[2] + 1;
1019                                 outelement3i[3] = remappedelement[1];
1020                                 outelement3i[4] = remappedelement[2] + 1;
1021                                 outelement3i[5] = remappedelement[1] + 1;
1022
1023                                 outelement3i += 6;
1024                                 outtriangles += 2;
1025                         }
1026                         if (shadowmark[neighbortriangle[2]] != shadowmarkcount)
1027                         {
1028                                 remappedelement[0] = vertexremap[element[0]];
1029                                 remappedelement[2] = vertexremap[element[2]];
1030                                 outelement3i[0] = remappedelement[2];
1031                                 outelement3i[1] = remappedelement[0];
1032                                 outelement3i[2] = remappedelement[0] + 1;
1033                                 outelement3i[3] = remappedelement[2];
1034                                 outelement3i[4] = remappedelement[0] + 1;
1035                                 outelement3i[5] = remappedelement[2] + 1;
1036
1037                                 outelement3i += 6;
1038                                 outtriangles += 2;
1039                         }
1040                 }
1041         }
1042         if (outnumvertices)
1043                 *outnumvertices = outvertices;
1044         return outtriangles;
1045 }
1046
1047 static int R_Shadow_ConstructShadowVolume_ZPass(int innumvertices, int innumtris, const int *inelement3i, const int *inneighbor3i, const float *invertex3f, int *outnumvertices, int *outelement3i, float *outvertex3f, const float *projectorigin, const float *projectdirection, float projectdistance, int numshadowmarktris, const int *shadowmarktris)
1048 {
1049         int i, j, k;
1050         int outtriangles = 0, outvertices = 0;
1051         const int *element;
1052         const float *vertex;
1053         float ratio, direction[3], projectvector[3];
1054         qboolean side[4];
1055
1056         if (projectdirection)
1057                 VectorScale(projectdirection, projectdistance, projectvector);
1058         else
1059                 VectorClear(projectvector);
1060
1061         for (i = 0;i < numshadowmarktris;i++)
1062         {
1063                 int remappedelement[3];
1064                 int markindex;
1065                 const int *neighbortriangle;
1066
1067                 markindex = shadowmarktris[i] * 3;
1068                 neighbortriangle = inneighbor3i + markindex;
1069                 side[0] = shadowmark[neighbortriangle[0]] == shadowmarkcount;
1070                 side[1] = shadowmark[neighbortriangle[1]] == shadowmarkcount;
1071                 side[2] = shadowmark[neighbortriangle[2]] == shadowmarkcount;
1072                 if (side[0] + side[1] + side[2] == 0)
1073                         continue;
1074
1075                 side[3] = side[0];
1076                 element = inelement3i + markindex;
1077
1078                 // create the vertices
1079                 for (j = 0;j < 3;j++)
1080                 {
1081                         if (side[j] + side[j+1] == 0)
1082                                 continue;
1083                         k = element[j];
1084                         if (vertexupdate[k] != vertexupdatenum)
1085                         {
1086                                 vertexupdate[k] = vertexupdatenum;
1087                                 vertexremap[k] = outvertices;
1088                                 vertex = invertex3f + k * 3;
1089                                 VectorCopy(vertex, outvertex3f);
1090                                 if (projectdirection)
1091                                 {
1092                                         // project one copy of the vertex according to projectvector
1093                                         VectorAdd(vertex, projectvector, (outvertex3f + 3));
1094                                 }
1095                                 else
1096                                 {
1097                                         // project one copy of the vertex to the sphere radius of the light
1098                                         // (FIXME: would projecting it to the light box be better?)
1099                                         VectorSubtract(vertex, projectorigin, direction);
1100                                         ratio = projectdistance / VectorLength(direction);
1101                                         VectorMA(projectorigin, ratio, direction, (outvertex3f + 3));
1102                                 }
1103                                 outvertex3f += 6;
1104                                 outvertices += 2;
1105                         }
1106                 }
1107
1108                 // output the sides (facing outward from this triangle)
1109                 if (!side[0])
1110                 {
1111                         remappedelement[0] = vertexremap[element[0]];
1112                         remappedelement[1] = vertexremap[element[1]];
1113                         outelement3i[0] = remappedelement[1];
1114                         outelement3i[1] = remappedelement[0];
1115                         outelement3i[2] = remappedelement[0] + 1;
1116                         outelement3i[3] = remappedelement[1];
1117                         outelement3i[4] = remappedelement[0] + 1;
1118                         outelement3i[5] = remappedelement[1] + 1;
1119
1120                         outelement3i += 6;
1121                         outtriangles += 2;
1122                 }
1123                 if (!side[1])
1124                 {
1125                         remappedelement[1] = vertexremap[element[1]];
1126                         remappedelement[2] = vertexremap[element[2]];
1127                         outelement3i[0] = remappedelement[2];
1128                         outelement3i[1] = remappedelement[1];
1129                         outelement3i[2] = remappedelement[1] + 1;
1130                         outelement3i[3] = remappedelement[2];
1131                         outelement3i[4] = remappedelement[1] + 1;
1132                         outelement3i[5] = remappedelement[2] + 1;
1133
1134                         outelement3i += 6;
1135                         outtriangles += 2;
1136                 }
1137                 if (!side[2])
1138                 {
1139                         remappedelement[0] = vertexremap[element[0]];
1140                         remappedelement[2] = vertexremap[element[2]];
1141                         outelement3i[0] = remappedelement[0];
1142                         outelement3i[1] = remappedelement[2];
1143                         outelement3i[2] = remappedelement[2] + 1;
1144                         outelement3i[3] = remappedelement[0];
1145                         outelement3i[4] = remappedelement[2] + 1;
1146                         outelement3i[5] = remappedelement[0] + 1;
1147
1148                         outelement3i += 6;
1149                         outtriangles += 2;
1150                 }
1151         }
1152         if (outnumvertices)
1153                 *outnumvertices = outvertices;
1154         return outtriangles;
1155 }
1156
1157 void R_Shadow_MarkVolumeFromBox(int firsttriangle, int numtris, const float *invertex3f, const int *elements, const vec3_t projectorigin, const vec3_t projectdirection, const vec3_t lightmins, const vec3_t lightmaxs, const vec3_t surfacemins, const vec3_t surfacemaxs)
1158 {
1159         int t, tend;
1160         const int *e;
1161         const float *v[3];
1162         float normal[3];
1163         if (!BoxesOverlap(lightmins, lightmaxs, surfacemins, surfacemaxs))
1164                 return;
1165         tend = firsttriangle + numtris;
1166         if (BoxInsideBox(surfacemins, surfacemaxs, lightmins, lightmaxs))
1167         {
1168                 // surface box entirely inside light box, no box cull
1169                 if (projectdirection)
1170                 {
1171                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1172                         {
1173                                 TriangleNormal(invertex3f + e[0] * 3, invertex3f + e[1] * 3, invertex3f + e[2] * 3, normal);
1174                                 if (r_shadow_frontsidecasting.integer == (DotProduct(normal, projectdirection) < 0))
1175                                         shadowmarklist[numshadowmark++] = t;
1176                         }
1177                 }
1178                 else
1179                 {
1180                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1181                                 if (r_shadow_frontsidecasting.integer == PointInfrontOfTriangle(projectorigin, invertex3f + e[0] * 3, invertex3f + e[1] * 3, invertex3f + e[2] * 3))
1182                                         shadowmarklist[numshadowmark++] = t;
1183                 }
1184         }
1185         else
1186         {
1187                 // surface box not entirely inside light box, cull each triangle
1188                 if (projectdirection)
1189                 {
1190                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1191                         {
1192                                 v[0] = invertex3f + e[0] * 3;
1193                                 v[1] = invertex3f + e[1] * 3;
1194                                 v[2] = invertex3f + e[2] * 3;
1195                                 TriangleNormal(v[0], v[1], v[2], normal);
1196                                 if (r_shadow_frontsidecasting.integer == (DotProduct(normal, projectdirection) < 0)
1197                                  && TriangleOverlapsBox(v[0], v[1], v[2], lightmins, lightmaxs))
1198                                         shadowmarklist[numshadowmark++] = t;
1199                         }
1200                 }
1201                 else
1202                 {
1203                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1204                         {
1205                                 v[0] = invertex3f + e[0] * 3;
1206                                 v[1] = invertex3f + e[1] * 3;
1207                                 v[2] = invertex3f + e[2] * 3;
1208                                 if (r_shadow_frontsidecasting.integer == PointInfrontOfTriangle(projectorigin, v[0], v[1], v[2])
1209                                  && TriangleOverlapsBox(v[0], v[1], v[2], lightmins, lightmaxs))
1210                                         shadowmarklist[numshadowmark++] = t;
1211                         }
1212                 }
1213         }
1214 }
1215
1216 qboolean R_Shadow_UseZPass(vec3_t mins, vec3_t maxs)
1217 {
1218 #if 1
1219         return false;
1220 #else
1221         if (r_shadow_compilingrtlight || !r_shadow_frontsidecasting.integer || !r_shadow_usezpassifpossible.integer)
1222                 return false;
1223         // check if the shadow volume intersects the near plane
1224         //
1225         // a ray between the eye and light origin may intersect the caster,
1226         // indicating that the shadow may touch the eye location, however we must
1227         // test the near plane (a polygon), not merely the eye location, so it is
1228         // easiest to enlarge the caster bounding shape slightly for this.
1229         // TODO
1230         return true;
1231 #endif
1232 }
1233
1234 void R_Shadow_VolumeFromList(int numverts, int numtris, const float *invertex3f, const int *elements, const int *neighbors, const vec3_t projectorigin, const vec3_t projectdirection, float projectdistance, int nummarktris, const int *marktris, vec3_t trismins, vec3_t trismaxs)
1235 {
1236         int i, tris, outverts;
1237         if (projectdistance < 0.1)
1238         {
1239                 Con_Printf("R_Shadow_Volume: projectdistance %f\n", projectdistance);
1240                 return;
1241         }
1242         if (!numverts || !nummarktris)
1243                 return;
1244         // make sure shadowelements is big enough for this volume
1245         if (maxshadowtriangles < nummarktris*8 || maxshadowvertices < numverts*2)
1246                 R_Shadow_ResizeShadowArrays(numverts, nummarktris, 2, 8);
1247
1248         if (maxvertexupdate < numverts)
1249         {
1250                 maxvertexupdate = numverts;
1251                 if (vertexupdate)
1252                         Mem_Free(vertexupdate);
1253                 if (vertexremap)
1254                         Mem_Free(vertexremap);
1255                 vertexupdate = (int *)Mem_Alloc(r_main_mempool, maxvertexupdate * sizeof(int));
1256                 vertexremap = (int *)Mem_Alloc(r_main_mempool, maxvertexupdate * sizeof(int));
1257                 vertexupdatenum = 0;
1258         }
1259         vertexupdatenum++;
1260         if (vertexupdatenum == 0)
1261         {
1262                 vertexupdatenum = 1;
1263                 memset(vertexupdate, 0, maxvertexupdate * sizeof(int));
1264                 memset(vertexremap, 0, maxvertexupdate * sizeof(int));
1265         }
1266
1267         for (i = 0;i < nummarktris;i++)
1268                 shadowmark[marktris[i]] = shadowmarkcount;
1269
1270         if (r_shadow_compilingrtlight)
1271         {
1272                 // if we're compiling an rtlight, capture the mesh
1273                 //tris = R_Shadow_ConstructShadowVolume_ZPass(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1274                 //Mod_ShadowMesh_AddMesh(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_zpass, NULL, NULL, NULL, shadowvertex3f, NULL, NULL, NULL, NULL, tris, shadowelements);
1275                 tris = R_Shadow_ConstructShadowVolume_ZFail(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1276                 Mod_ShadowMesh_AddMesh(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_zfail, NULL, NULL, NULL, shadowvertex3f, NULL, NULL, NULL, NULL, tris, shadowelements);
1277         }
1278         else if (r_shadow_rendermode == R_SHADOW_RENDERMODE_VISIBLEVOLUMES)
1279         {
1280                 tris = R_Shadow_ConstructShadowVolume_ZFail(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1281                 R_Mesh_PrepareVertices_Position_Arrays(outverts, shadowvertex3f);
1282                 R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, NULL, NULL, 0);
1283         }
1284         else
1285         {
1286                 // decide which type of shadow to generate and set stencil mode
1287                 R_Shadow_RenderMode_StencilShadowVolumes(R_Shadow_UseZPass(trismins, trismaxs));
1288                 // generate the sides or a solid volume, depending on type
1289                 if (r_shadow_rendermode >= R_SHADOW_RENDERMODE_ZPASS_STENCIL && r_shadow_rendermode <= R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE)
1290                         tris = R_Shadow_ConstructShadowVolume_ZPass(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1291                 else
1292                         tris = R_Shadow_ConstructShadowVolume_ZFail(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
1293                 r_refdef.stats.lights_dynamicshadowtriangles += tris;
1294                 r_refdef.stats.lights_shadowtriangles += tris;
1295                 if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZPASS_STENCIL)
1296                 {
1297                         // increment stencil if frontface is infront of depthbuffer
1298                         GL_CullFace(r_refdef.view.cullface_front);
1299                         R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_DECR, GL_ALWAYS, 128, 255);
1300                         R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, NULL, NULL, 0);
1301                         // decrement stencil if backface is infront of depthbuffer
1302                         GL_CullFace(r_refdef.view.cullface_back);
1303                         R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_INCR, GL_ALWAYS, 128, 255);
1304                 }
1305                 else if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZFAIL_STENCIL)
1306                 {
1307                         // decrement stencil if backface is behind depthbuffer
1308                         GL_CullFace(r_refdef.view.cullface_front);
1309                         R_SetStencil(true, 255, GL_KEEP, GL_DECR, GL_KEEP, GL_ALWAYS, 128, 255);
1310                         R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, NULL, NULL, 0);
1311                         // increment stencil if frontface is behind depthbuffer
1312                         GL_CullFace(r_refdef.view.cullface_back);
1313                         R_SetStencil(true, 255, GL_KEEP, GL_INCR, GL_KEEP, GL_ALWAYS, 128, 255);
1314                 }
1315                 R_Mesh_PrepareVertices_Position_Arrays(outverts, shadowvertex3f);
1316                 R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, NULL, NULL, 0);
1317         }
1318 }
1319
1320 int R_Shadow_CalcTriangleSideMask(const vec3_t p1, const vec3_t p2, const vec3_t p3, float bias)
1321 {
1322     // p1, p2, p3 are in the cubemap's local coordinate system
1323     // bias = border/(size - border)
1324         int mask = 0x3F;
1325
1326     float dp1 = p1[0] + p1[1], dn1 = p1[0] - p1[1], ap1 = fabs(dp1), an1 = fabs(dn1),
1327           dp2 = p2[0] + p2[1], dn2 = p2[0] - p2[1], ap2 = fabs(dp2), an2 = fabs(dn2),
1328           dp3 = p3[0] + p3[1], dn3 = p3[0] - p3[1], ap3 = fabs(dp3), an3 = fabs(dn3);
1329         if(ap1 > bias*an1 && ap2 > bias*an2 && ap3 > bias*an3)
1330         mask &= (3<<4)
1331                         | (dp1 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2))
1332                         | (dp2 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2))
1333                         | (dp3 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
1334     if(an1 > bias*ap1 && an2 > bias*ap2 && an3 > bias*ap3)
1335         mask &= (3<<4)
1336             | (dn1 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2))
1337             | (dn2 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2))
1338             | (dn3 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
1339
1340     dp1 = p1[1] + p1[2], dn1 = p1[1] - p1[2], ap1 = fabs(dp1), an1 = fabs(dn1),
1341     dp2 = p2[1] + p2[2], dn2 = p2[1] - p2[2], ap2 = fabs(dp2), an2 = fabs(dn2),
1342     dp3 = p3[1] + p3[2], dn3 = p3[1] - p3[2], ap3 = fabs(dp3), an3 = fabs(dn3);
1343     if(ap1 > bias*an1 && ap2 > bias*an2 && ap3 > bias*an3)
1344         mask &= (3<<0)
1345             | (dp1 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4))
1346             | (dp2 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4))
1347             | (dp3 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
1348     if(an1 > bias*ap1 && an2 > bias*ap2 && an3 > bias*ap3)
1349         mask &= (3<<0)
1350             | (dn1 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4))
1351             | (dn2 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4))
1352             | (dn3 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
1353
1354     dp1 = p1[2] + p1[0], dn1 = p1[2] - p1[0], ap1 = fabs(dp1), an1 = fabs(dn1),
1355     dp2 = p2[2] + p2[0], dn2 = p2[2] - p2[0], ap2 = fabs(dp2), an2 = fabs(dn2),
1356     dp3 = p3[2] + p3[0], dn3 = p3[2] - p3[0], ap3 = fabs(dp3), an3 = fabs(dn3);
1357     if(ap1 > bias*an1 && ap2 > bias*an2 && ap3 > bias*an3)
1358         mask &= (3<<2)
1359             | (dp1 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0))
1360             | (dp2 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0))
1361             | (dp3 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
1362     if(an1 > bias*ap1 && an2 > bias*ap2 && an3 > bias*ap3)
1363         mask &= (3<<2)
1364             | (dn1 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0))
1365             | (dn2 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0))
1366             | (dn3 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
1367
1368         return mask;
1369 }
1370
1371 int R_Shadow_CalcBBoxSideMask(const vec3_t mins, const vec3_t maxs, const matrix4x4_t *worldtolight, const matrix4x4_t *radiustolight, float bias)
1372 {
1373         vec3_t center, radius, lightcenter, lightradius, pmin, pmax;
1374         float dp1, dn1, ap1, an1, dp2, dn2, ap2, an2;
1375         int mask = 0x3F;
1376
1377         VectorSubtract(maxs, mins, radius);
1378     VectorScale(radius, 0.5f, radius);
1379     VectorAdd(mins, radius, center);
1380     Matrix4x4_Transform(worldtolight, center, lightcenter);
1381         Matrix4x4_Transform3x3(radiustolight, radius, lightradius);
1382         VectorSubtract(lightcenter, lightradius, pmin);
1383         VectorAdd(lightcenter, lightradius, pmax);
1384
1385     dp1 = pmax[0] + pmax[1], dn1 = pmax[0] - pmin[1], ap1 = fabs(dp1), an1 = fabs(dn1),
1386     dp2 = pmin[0] + pmin[1], dn2 = pmin[0] - pmax[1], ap2 = fabs(dp2), an2 = fabs(dn2);
1387     if(ap1 > bias*an1 && ap2 > bias*an2)
1388         mask &= (3<<4)
1389             | (dp1 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2))
1390             | (dp2 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
1391     if(an1 > bias*ap1 && an2 > bias*ap2)
1392         mask &= (3<<4)
1393             | (dn1 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2))
1394             | (dn2 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
1395
1396     dp1 = pmax[1] + pmax[2], dn1 = pmax[1] - pmin[2], ap1 = fabs(dp1), an1 = fabs(dn1),
1397     dp2 = pmin[1] + pmin[2], dn2 = pmin[1] - pmax[2], ap2 = fabs(dp2), an2 = fabs(dn2);
1398     if(ap1 > bias*an1 && ap2 > bias*an2)
1399         mask &= (3<<0)
1400             | (dp1 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4))
1401             | (dp2 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
1402     if(an1 > bias*ap1 && an2 > bias*ap2)
1403         mask &= (3<<0)
1404             | (dn1 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4))
1405             | (dn2 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
1406
1407     dp1 = pmax[2] + pmax[0], dn1 = pmax[2] - pmin[0], ap1 = fabs(dp1), an1 = fabs(dn1),
1408     dp2 = pmin[2] + pmin[0], dn2 = pmin[2] - pmax[0], ap2 = fabs(dp2), an2 = fabs(dn2);
1409     if(ap1 > bias*an1 && ap2 > bias*an2)
1410         mask &= (3<<2)
1411             | (dp1 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0))
1412             | (dp2 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
1413     if(an1 > bias*ap1 && an2 > bias*ap2)
1414         mask &= (3<<2)
1415             | (dn1 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0))
1416             | (dn2 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
1417
1418     return mask;
1419 }
1420
1421 #define R_Shadow_CalcEntitySideMask(ent, worldtolight, radiustolight, bias) R_Shadow_CalcBBoxSideMask((ent)->mins, (ent)->maxs, worldtolight, radiustolight, bias)
1422
1423 int R_Shadow_CalcSphereSideMask(const vec3_t p, float radius, float bias)
1424 {
1425     // p is in the cubemap's local coordinate system
1426     // bias = border/(size - border)
1427     float dxyp = p[0] + p[1], dxyn = p[0] - p[1], axyp = fabs(dxyp), axyn = fabs(dxyn);
1428     float dyzp = p[1] + p[2], dyzn = p[1] - p[2], ayzp = fabs(dyzp), ayzn = fabs(dyzn);
1429     float dzxp = p[2] + p[0], dzxn = p[2] - p[0], azxp = fabs(dzxp), azxn = fabs(dzxn);
1430     int mask = 0x3F;
1431     if(axyp > bias*axyn + radius) mask &= dxyp < 0 ? ~((1<<0)|(1<<2)) : ~((2<<0)|(2<<2));
1432     if(axyn > bias*axyp + radius) mask &= dxyn < 0 ? ~((1<<0)|(2<<2)) : ~((2<<0)|(1<<2));
1433     if(ayzp > bias*ayzn + radius) mask &= dyzp < 0 ? ~((1<<2)|(1<<4)) : ~((2<<2)|(2<<4));
1434     if(ayzn > bias*ayzp + radius) mask &= dyzn < 0 ? ~((1<<2)|(2<<4)) : ~((2<<2)|(1<<4));
1435     if(azxp > bias*azxn + radius) mask &= dzxp < 0 ? ~((1<<4)|(1<<0)) : ~((2<<4)|(2<<0));
1436     if(azxn > bias*azxp + radius) mask &= dzxn < 0 ? ~((1<<4)|(2<<0)) : ~((2<<4)|(1<<0));
1437     return mask;
1438 }
1439
1440 int R_Shadow_CullFrustumSides(rtlight_t *rtlight, float size, float border)
1441 {
1442         int i;
1443         vec3_t p, n;
1444         int sides = 0x3F, masks[6] = { 3<<4, 3<<4, 3<<0, 3<<0, 3<<2, 3<<2 };
1445         float scale = (size - 2*border)/size, len;
1446         float bias = border / (float)(size - border), dp, dn, ap, an;
1447         // check if cone enclosing side would cross frustum plane
1448         scale = 2 / (scale*scale + 2);
1449         for (i = 0;i < 5;i++)
1450         {
1451                 if (PlaneDiff(rtlight->shadoworigin, &r_refdef.view.frustum[i]) > -0.03125)
1452                         continue;
1453                 Matrix4x4_Transform3x3(&rtlight->matrix_worldtolight, r_refdef.view.frustum[i].normal, n);
1454                 len = scale*VectorLength2(n);
1455                 if(n[0]*n[0] > len) sides &= n[0] < 0 ? ~(1<<0) : ~(2 << 0);
1456                 if(n[1]*n[1] > len) sides &= n[1] < 0 ? ~(1<<2) : ~(2 << 2);
1457                 if(n[2]*n[2] > len) sides &= n[2] < 0 ? ~(1<<4) : ~(2 << 4);
1458         }
1459         if (PlaneDiff(rtlight->shadoworigin, &r_refdef.view.frustum[4]) >= r_refdef.farclip - r_refdef.nearclip + 0.03125)
1460         {
1461         Matrix4x4_Transform3x3(&rtlight->matrix_worldtolight, r_refdef.view.frustum[4].normal, n);
1462         len = scale*VectorLength(n);
1463                 if(n[0]*n[0] > len) sides &= n[0] >= 0 ? ~(1<<0) : ~(2 << 0);
1464                 if(n[1]*n[1] > len) sides &= n[1] >= 0 ? ~(1<<2) : ~(2 << 2);
1465                 if(n[2]*n[2] > len) sides &= n[2] >= 0 ? ~(1<<4) : ~(2 << 4);
1466         }
1467         // this next test usually clips off more sides than the former, but occasionally clips fewer/different ones, so do both and combine results
1468         // check if frustum corners/origin cross plane sides
1469 #if 1
1470     // infinite version, assumes frustum corners merely give direction and extend to infinite distance
1471     Matrix4x4_Transform(&rtlight->matrix_worldtolight, r_refdef.view.origin, p);
1472     dp = p[0] + p[1], dn = p[0] - p[1], ap = fabs(dp), an = fabs(dn);
1473     masks[0] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
1474     masks[1] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
1475     dp = p[1] + p[2], dn = p[1] - p[2], ap = fabs(dp), an = fabs(dn);
1476     masks[2] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
1477     masks[3] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
1478     dp = p[2] + p[0], dn = p[2] - p[0], ap = fabs(dp), an = fabs(dn);
1479     masks[4] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
1480     masks[5] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
1481     for (i = 0;i < 4;i++)
1482     {
1483         Matrix4x4_Transform(&rtlight->matrix_worldtolight, r_refdef.view.frustumcorner[i], n);
1484         VectorSubtract(n, p, n);
1485         dp = n[0] + n[1], dn = n[0] - n[1], ap = fabs(dp), an = fabs(dn);
1486         if(ap > 0) masks[0] |= dp >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2);
1487         if(an > 0) masks[1] |= dn >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2);
1488         dp = n[1] + n[2], dn = n[1] - n[2], ap = fabs(dp), an = fabs(dn);
1489         if(ap > 0) masks[2] |= dp >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4);
1490         if(an > 0) masks[3] |= dn >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4);
1491         dp = n[2] + n[0], dn = n[2] - n[0], ap = fabs(dp), an = fabs(dn);
1492         if(ap > 0) masks[4] |= dp >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0);
1493         if(an > 0) masks[5] |= dn >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0);
1494     }
1495 #else
1496     // finite version, assumes corners are a finite distance from origin dependent on far plane
1497         for (i = 0;i < 5;i++)
1498         {
1499                 Matrix4x4_Transform(&rtlight->matrix_worldtolight, !i ? r_refdef.view.origin : r_refdef.view.frustumcorner[i-1], p);
1500                 dp = p[0] + p[1], dn = p[0] - p[1], ap = fabs(dp), an = fabs(dn);
1501                 masks[0] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
1502                 masks[1] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
1503                 dp = p[1] + p[2], dn = p[1] - p[2], ap = fabs(dp), an = fabs(dn);
1504                 masks[2] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
1505                 masks[3] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
1506                 dp = p[2] + p[0], dn = p[2] - p[0], ap = fabs(dp), an = fabs(dn);
1507                 masks[4] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
1508                 masks[5] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
1509         }
1510 #endif
1511         return sides & masks[0] & masks[1] & masks[2] & masks[3] & masks[4] & masks[5];
1512 }
1513
1514 int R_Shadow_ChooseSidesFromBox(int firsttriangle, int numtris, const float *invertex3f, const int *elements, const matrix4x4_t *worldtolight, const vec3_t projectorigin, const vec3_t projectdirection, const vec3_t lightmins, const vec3_t lightmaxs, const vec3_t surfacemins, const vec3_t surfacemaxs, int *totals)
1515 {
1516         int t, tend;
1517         const int *e;
1518         const float *v[3];
1519         float normal[3];
1520         vec3_t p[3];
1521         float bias;
1522         int mask, surfacemask = 0;
1523         if (!BoxesOverlap(lightmins, lightmaxs, surfacemins, surfacemaxs))
1524                 return 0;
1525         bias = r_shadow_shadowmapborder / (float)(r_shadow_shadowmapmaxsize - r_shadow_shadowmapborder);
1526         tend = firsttriangle + numtris;
1527         if (BoxInsideBox(surfacemins, surfacemaxs, lightmins, lightmaxs))
1528         {
1529                 // surface box entirely inside light box, no box cull
1530                 if (projectdirection)
1531                 {
1532                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1533                         {
1534                                 v[0] = invertex3f + e[0] * 3, v[1] = invertex3f + e[1] * 3, v[2] = invertex3f + e[2] * 3;
1535                                 TriangleNormal(v[0], v[1], v[2], normal);
1536                                 if (r_shadow_frontsidecasting.integer == (DotProduct(normal, projectdirection) < 0))
1537                                 {
1538                                         Matrix4x4_Transform(worldtolight, v[0], p[0]), Matrix4x4_Transform(worldtolight, v[1], p[1]), Matrix4x4_Transform(worldtolight, v[2], p[2]);
1539                                         mask = R_Shadow_CalcTriangleSideMask(p[0], p[1], p[2], bias);
1540                                         surfacemask |= mask;
1541                                         if(totals)
1542                                         {
1543                                                 totals[0] += mask&1, totals[1] += (mask>>1)&1, totals[2] += (mask>>2)&1, totals[3] += (mask>>3)&1, totals[4] += (mask>>4)&1, totals[5] += mask>>5;
1544                                                 shadowsides[numshadowsides] = mask;
1545                                                 shadowsideslist[numshadowsides++] = t;
1546                                         }
1547                                 }
1548                         }
1549                 }
1550                 else
1551                 {
1552                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1553                         {
1554                                 v[0] = invertex3f + e[0] * 3, v[1] = invertex3f + e[1] * 3,     v[2] = invertex3f + e[2] * 3;
1555                                 if (r_shadow_frontsidecasting.integer == PointInfrontOfTriangle(projectorigin, v[0], v[1], v[2]))
1556                                 {
1557                                         Matrix4x4_Transform(worldtolight, v[0], p[0]), Matrix4x4_Transform(worldtolight, v[1], p[1]), Matrix4x4_Transform(worldtolight, v[2], p[2]);
1558                                         mask = R_Shadow_CalcTriangleSideMask(p[0], p[1], p[2], bias);
1559                                         surfacemask |= mask;
1560                                         if(totals)
1561                                         {
1562                                                 totals[0] += mask&1, totals[1] += (mask>>1)&1, totals[2] += (mask>>2)&1, totals[3] += (mask>>3)&1, totals[4] += (mask>>4)&1, totals[5] += mask>>5;
1563                                                 shadowsides[numshadowsides] = mask;
1564                                                 shadowsideslist[numshadowsides++] = t;
1565                                         }
1566                                 }
1567                         }
1568                 }
1569         }
1570         else
1571         {
1572                 // surface box not entirely inside light box, cull each triangle
1573                 if (projectdirection)
1574                 {
1575                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1576                         {
1577                                 v[0] = invertex3f + e[0] * 3, v[1] = invertex3f + e[1] * 3,     v[2] = invertex3f + e[2] * 3;
1578                                 TriangleNormal(v[0], v[1], v[2], normal);
1579                                 if (r_shadow_frontsidecasting.integer == (DotProduct(normal, projectdirection) < 0)
1580                                  && TriangleOverlapsBox(v[0], v[1], v[2], lightmins, lightmaxs))
1581                                 {
1582                                         Matrix4x4_Transform(worldtolight, v[0], p[0]), Matrix4x4_Transform(worldtolight, v[1], p[1]), Matrix4x4_Transform(worldtolight, v[2], p[2]);
1583                                         mask = R_Shadow_CalcTriangleSideMask(p[0], p[1], p[2], bias);
1584                                         surfacemask |= mask;
1585                                         if(totals)
1586                                         {
1587                                                 totals[0] += mask&1, totals[1] += (mask>>1)&1, totals[2] += (mask>>2)&1, totals[3] += (mask>>3)&1, totals[4] += (mask>>4)&1, totals[5] += mask>>5;
1588                                                 shadowsides[numshadowsides] = mask;
1589                                                 shadowsideslist[numshadowsides++] = t;
1590                                         }
1591                                 }
1592                         }
1593                 }
1594                 else
1595                 {
1596                         for (t = firsttriangle, e = elements + t * 3;t < tend;t++, e += 3)
1597                         {
1598                                 v[0] = invertex3f + e[0] * 3, v[1] = invertex3f + e[1] * 3, v[2] = invertex3f + e[2] * 3;
1599                                 if (r_shadow_frontsidecasting.integer == PointInfrontOfTriangle(projectorigin, v[0], v[1], v[2])
1600                                  && TriangleOverlapsBox(v[0], v[1], v[2], lightmins, lightmaxs))
1601                                 {
1602                                         Matrix4x4_Transform(worldtolight, v[0], p[0]), Matrix4x4_Transform(worldtolight, v[1], p[1]), Matrix4x4_Transform(worldtolight, v[2], p[2]);
1603                                         mask = R_Shadow_CalcTriangleSideMask(p[0], p[1], p[2], bias);
1604                                         surfacemask |= mask;
1605                                         if(totals)
1606                                         {
1607                                                 totals[0] += mask&1, totals[1] += (mask>>1)&1, totals[2] += (mask>>2)&1, totals[3] += (mask>>3)&1, totals[4] += (mask>>4)&1, totals[5] += mask>>5;
1608                                                 shadowsides[numshadowsides] = mask;
1609                                                 shadowsideslist[numshadowsides++] = t;
1610                                         }
1611                                 }
1612                         }
1613                 }
1614         }
1615         return surfacemask;
1616 }
1617
1618 void R_Shadow_ShadowMapFromList(int numverts, int numtris, const float *vertex3f, const int *elements, int numsidetris, const int *sidetotals, const unsigned char *sides, const int *sidetris)
1619 {
1620         int i, j, outtriangles = 0;
1621         int *outelement3i[6];
1622         if (!numverts || !numsidetris || !r_shadow_compilingrtlight)
1623                 return;
1624         outtriangles = sidetotals[0] + sidetotals[1] + sidetotals[2] + sidetotals[3] + sidetotals[4] + sidetotals[5];
1625         // make sure shadowelements is big enough for this mesh
1626         if (maxshadowtriangles < outtriangles)
1627                 R_Shadow_ResizeShadowArrays(0, outtriangles, 0, 1);
1628
1629         // compute the offset and size of the separate index lists for each cubemap side
1630         outtriangles = 0;
1631         for (i = 0;i < 6;i++)
1632         {
1633                 outelement3i[i] = shadowelements + outtriangles * 3;
1634                 r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap->sideoffsets[i] = outtriangles;
1635                 r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap->sidetotals[i] = sidetotals[i];
1636                 outtriangles += sidetotals[i];
1637         }
1638
1639         // gather up the (sparse) triangles into separate index lists for each cubemap side
1640         for (i = 0;i < numsidetris;i++)
1641         {
1642                 const int *element = elements + sidetris[i] * 3;
1643                 for (j = 0;j < 6;j++)
1644                 {
1645                         if (sides[i] & (1 << j))
1646                         {
1647                                 outelement3i[j][0] = element[0];
1648                                 outelement3i[j][1] = element[1];
1649                                 outelement3i[j][2] = element[2];
1650                                 outelement3i[j] += 3;
1651                         }
1652                 }
1653         }
1654
1655         Mod_ShadowMesh_AddMesh(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap, NULL, NULL, NULL, vertex3f, NULL, NULL, NULL, NULL, outtriangles, shadowelements);
1656 }
1657
1658 static void R_Shadow_MakeTextures_MakeCorona(void)
1659 {
1660         float dx, dy;
1661         int x, y, a;
1662         unsigned char pixels[32][32][4];
1663         for (y = 0;y < 32;y++)
1664         {
1665                 dy = (y - 15.5f) * (1.0f / 16.0f);
1666                 for (x = 0;x < 32;x++)
1667                 {
1668                         dx = (x - 15.5f) * (1.0f / 16.0f);
1669                         a = (int)(((1.0f / (dx * dx + dy * dy + 0.2f)) - (1.0f / (1.0f + 0.2))) * 32.0f / (1.0f / (1.0f + 0.2)));
1670                         a = bound(0, a, 255);
1671                         pixels[y][x][0] = a;
1672                         pixels[y][x][1] = a;
1673                         pixels[y][x][2] = a;
1674                         pixels[y][x][3] = 255;
1675                 }
1676         }
1677         r_shadow_lightcorona = R_SkinFrame_LoadInternalBGRA("lightcorona", TEXF_FORCELINEAR, &pixels[0][0][0], 32, 32);
1678 }
1679
1680 static unsigned int R_Shadow_MakeTextures_SamplePoint(float x, float y, float z)
1681 {
1682         float dist = sqrt(x*x+y*y+z*z);
1683         float intensity = dist < 1 ? ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) : 0;
1684         // note this code could suffer byte order issues except that it is multiplying by an integer that reads the same both ways
1685         return (unsigned char)bound(0, intensity * 256.0f, 255) * 0x01010101;
1686 }
1687
1688 static void R_Shadow_MakeTextures(void)
1689 {
1690         int x, y, z;
1691         float intensity, dist;
1692         unsigned int *data;
1693         R_Shadow_FreeShadowMaps();
1694         R_FreeTexturePool(&r_shadow_texturepool);
1695         r_shadow_texturepool = R_AllocTexturePool();
1696         r_shadow_attenlinearscale = r_shadow_lightattenuationlinearscale.value;
1697         r_shadow_attendividebias = r_shadow_lightattenuationdividebias.value;
1698         data = (unsigned int *)Mem_Alloc(tempmempool, max(max(ATTEN3DSIZE*ATTEN3DSIZE*ATTEN3DSIZE, ATTEN2DSIZE*ATTEN2DSIZE), ATTEN1DSIZE) * 4);
1699         // the table includes one additional value to avoid the need to clamp indexing due to minor math errors
1700         for (x = 0;x <= ATTENTABLESIZE;x++)
1701         {
1702                 dist = (x + 0.5f) * (1.0f / ATTENTABLESIZE) * (1.0f / 0.9375);
1703                 intensity = dist < 1 ? ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) : 0;
1704                 r_shadow_attentable[x] = bound(0, intensity, 1);
1705         }
1706         // 1D gradient texture
1707         for (x = 0;x < ATTEN1DSIZE;x++)
1708                 data[x] = R_Shadow_MakeTextures_SamplePoint((x + 0.5f) * (1.0f / ATTEN1DSIZE) * (1.0f / 0.9375), 0, 0);
1709         r_shadow_attenuationgradienttexture = R_LoadTexture2D(r_shadow_texturepool, "attenuation1d", ATTEN1DSIZE, 1, (unsigned char *)data, TEXTYPE_BGRA, TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCELINEAR, -1, NULL);
1710         // 2D circle texture
1711         for (y = 0;y < ATTEN2DSIZE;y++)
1712                 for (x = 0;x < ATTEN2DSIZE;x++)
1713                         data[y*ATTEN2DSIZE+x] = R_Shadow_MakeTextures_SamplePoint(((x + 0.5f) * (2.0f / ATTEN2DSIZE) - 1.0f) * (1.0f / 0.9375), ((y + 0.5f) * (2.0f / ATTEN2DSIZE) - 1.0f) * (1.0f / 0.9375), 0);
1714         r_shadow_attenuation2dtexture = R_LoadTexture2D(r_shadow_texturepool, "attenuation2d", ATTEN2DSIZE, ATTEN2DSIZE, (unsigned char *)data, TEXTYPE_BGRA, TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCELINEAR, -1, NULL);
1715         // 3D sphere texture
1716         if (r_shadow_texture3d.integer && vid.support.ext_texture_3d)
1717         {
1718                 for (z = 0;z < ATTEN3DSIZE;z++)
1719                         for (y = 0;y < ATTEN3DSIZE;y++)
1720                                 for (x = 0;x < ATTEN3DSIZE;x++)
1721                                         data[(z*ATTEN3DSIZE+y)*ATTEN3DSIZE+x] = R_Shadow_MakeTextures_SamplePoint(((x + 0.5f) * (2.0f / ATTEN3DSIZE) - 1.0f) * (1.0f / 0.9375), ((y + 0.5f) * (2.0f / ATTEN3DSIZE) - 1.0f) * (1.0f / 0.9375), ((z + 0.5f) * (2.0f / ATTEN3DSIZE) - 1.0f) * (1.0f / 0.9375));
1722                 r_shadow_attenuation3dtexture = R_LoadTexture3D(r_shadow_texturepool, "attenuation3d", ATTEN3DSIZE, ATTEN3DSIZE, ATTEN3DSIZE, (unsigned char *)data, TEXTYPE_BGRA, TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCELINEAR, -1, NULL);
1723         }
1724         else
1725                 r_shadow_attenuation3dtexture = NULL;
1726         Mem_Free(data);
1727
1728         R_Shadow_MakeTextures_MakeCorona();
1729
1730         // Editor light sprites
1731         r_editlights_sprcursor = R_SkinFrame_LoadInternal8bit("gfx/editlights/cursor", TEXF_ALPHA | TEXF_CLAMP, (const unsigned char *)
1732         "................"
1733         ".3............3."
1734         "..5...2332...5.."
1735         "...7.3....3.7..."
1736         "....7......7...."
1737         "...3.7....7.3..."
1738         "..2...7..7...2.."
1739         "..3..........3.."
1740         "..3..........3.."
1741         "..2...7..7...2.."
1742         "...3.7....7.3..."
1743         "....7......7...."
1744         "...7.3....3.7..."
1745         "..5...2332...5.."
1746         ".3............3."
1747         "................"
1748         , 16, 16, palette_bgra_embeddedpic, palette_bgra_embeddedpic);
1749         r_editlights_sprlight = R_SkinFrame_LoadInternal8bit("gfx/editlights/light", TEXF_ALPHA | TEXF_CLAMP, (const unsigned char *)
1750         "................"
1751         "................"
1752         "......1111......"
1753         "....11233211...."
1754         "...1234554321..."
1755         "...1356776531..."
1756         "..124677776421.."
1757         "..135777777531.."
1758         "..135777777531.."
1759         "..124677776421.."
1760         "...1356776531..."
1761         "...1234554321..."
1762         "....11233211...."
1763         "......1111......"
1764         "................"
1765         "................"
1766         , 16, 16, palette_bgra_embeddedpic, palette_bgra_embeddedpic);
1767         r_editlights_sprnoshadowlight = R_SkinFrame_LoadInternal8bit("gfx/editlights/noshadow", TEXF_ALPHA | TEXF_CLAMP, (const unsigned char *)
1768         "................"
1769         "................"
1770         "......1111......"
1771         "....11233211...."
1772         "...1234554321..."
1773         "...1356226531..."
1774         "..12462..26421.."
1775         "..1352....2531.."
1776         "..1352....2531.."
1777         "..12462..26421.."
1778         "...1356226531..."
1779         "...1234554321..."
1780         "....11233211...."
1781         "......1111......"
1782         "................"
1783         "................"
1784         , 16, 16, palette_bgra_embeddedpic, palette_bgra_embeddedpic);
1785         r_editlights_sprcubemaplight = R_SkinFrame_LoadInternal8bit("gfx/editlights/cubemaplight", TEXF_ALPHA | TEXF_CLAMP, (const unsigned char *)
1786         "................"
1787         "................"
1788         "......2772......"
1789         "....27755772...."
1790         "..277533335772.."
1791         "..753333333357.."
1792         "..777533335777.."
1793         "..735775577537.."
1794         "..733357753337.."
1795         "..733337733337.."
1796         "..753337733357.."
1797         "..277537735772.."
1798         "....27777772...."
1799         "......2772......"
1800         "................"
1801         "................"
1802         , 16, 16, palette_bgra_embeddedpic, palette_bgra_embeddedpic);
1803         r_editlights_sprcubemapnoshadowlight = R_SkinFrame_LoadInternal8bit("gfx/editlights/cubemapnoshadowlight", TEXF_ALPHA | TEXF_CLAMP, (const unsigned char *)
1804         "................"
1805         "................"
1806         "......2772......"
1807         "....27722772...."
1808         "..2772....2772.."
1809         "..72........27.."
1810         "..7772....2777.."
1811         "..7.27722772.7.."
1812         "..7...2772...7.."
1813         "..7....77....7.."
1814         "..72...77...27.."
1815         "..2772.77.2772.."
1816         "....27777772...."
1817         "......2772......"
1818         "................"
1819         "................"
1820         , 16, 16, palette_bgra_embeddedpic, palette_bgra_embeddedpic);
1821         r_editlights_sprselection = R_SkinFrame_LoadInternal8bit("gfx/editlights/selection", TEXF_ALPHA | TEXF_CLAMP, (unsigned char *)
1822         "................"
1823         ".777752..257777."
1824         ".742........247."
1825         ".72..........27."
1826         ".7............7."
1827         ".5............5."
1828         ".2............2."
1829         "................"
1830         "................"
1831         ".2............2."
1832         ".5............5."
1833         ".7............7."
1834         ".72..........27."
1835         ".742........247."
1836         ".777752..257777."
1837         "................"
1838         , 16, 16, palette_bgra_embeddedpic, palette_bgra_embeddedpic);
1839 }
1840
1841 void R_Shadow_ValidateCvars(void)
1842 {
1843         if (r_shadow_texture3d.integer && !vid.support.ext_texture_3d)
1844                 Cvar_SetValueQuick(&r_shadow_texture3d, 0);
1845         if (gl_ext_separatestencil.integer && !vid.support.ati_separate_stencil)
1846                 Cvar_SetValueQuick(&gl_ext_separatestencil, 0);
1847         if (gl_ext_stenciltwoside.integer && !vid.support.ext_stencil_two_side)
1848                 Cvar_SetValueQuick(&gl_ext_stenciltwoside, 0);
1849 }
1850
1851 //static const r_vertexposition_t resetvertexposition[3] = {{0, 0, 0}};
1852
1853 void R_Shadow_RenderMode_Begin(void)
1854 {
1855 #if 0
1856         GLint drawbuffer;
1857         GLint readbuffer;
1858 #endif
1859         R_Shadow_ValidateCvars();
1860
1861         if (!r_shadow_attenuation2dtexture
1862          || (!r_shadow_attenuation3dtexture && r_shadow_texture3d.integer)
1863          || r_shadow_lightattenuationdividebias.value != r_shadow_attendividebias
1864          || r_shadow_lightattenuationlinearscale.value != r_shadow_attenlinearscale)
1865                 R_Shadow_MakeTextures();
1866
1867         CHECKGLERROR
1868         R_Mesh_ResetTextureState();
1869 //      R_Mesh_PrepareVertices_Position(0, resetvertexposition, NULL);
1870         GL_BlendFunc(GL_ONE, GL_ZERO);
1871         GL_DepthRange(0, 1);
1872         GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);
1873         GL_DepthTest(true);
1874         GL_DepthMask(false);
1875         GL_Color(0, 0, 0, 1);
1876         GL_Scissor(r_refdef.view.viewport.x, r_refdef.view.viewport.y, r_refdef.view.viewport.width, r_refdef.view.viewport.height);
1877
1878         r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
1879
1880         if (gl_ext_separatestencil.integer && vid.support.ati_separate_stencil)
1881         {
1882                 r_shadow_shadowingrendermode_zpass = R_SHADOW_RENDERMODE_ZPASS_SEPARATESTENCIL;
1883                 r_shadow_shadowingrendermode_zfail = R_SHADOW_RENDERMODE_ZFAIL_SEPARATESTENCIL;
1884         }
1885         else if (gl_ext_stenciltwoside.integer && vid.support.ext_stencil_two_side)
1886         {
1887                 r_shadow_shadowingrendermode_zpass = R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE;
1888                 r_shadow_shadowingrendermode_zfail = R_SHADOW_RENDERMODE_ZFAIL_STENCILTWOSIDE;
1889         }
1890         else
1891         {
1892                 r_shadow_shadowingrendermode_zpass = R_SHADOW_RENDERMODE_ZPASS_STENCIL;
1893                 r_shadow_shadowingrendermode_zfail = R_SHADOW_RENDERMODE_ZFAIL_STENCIL;
1894         }
1895
1896         switch(vid.renderpath)
1897         {
1898         case RENDERPATH_GL20:
1899         case RENDERPATH_CGGL:
1900         case RENDERPATH_D3D9:
1901         case RENDERPATH_D3D10:
1902         case RENDERPATH_D3D11:
1903                 r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_GLSL;
1904                 break;
1905         case RENDERPATH_GL13:
1906         case RENDERPATH_GL11:
1907                 if (r_textureunits.integer >= 2 && vid.texunits >= 2 && r_shadow_texture3d.integer && r_shadow_attenuation3dtexture)
1908                         r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_VERTEX3DATTEN;
1909                 else if (r_textureunits.integer >= 3 && vid.texunits >= 3)
1910                         r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_VERTEX2D1DATTEN;
1911                 else if (r_textureunits.integer >= 2 && vid.texunits >= 2)
1912                         r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_VERTEX2DATTEN;
1913                 else
1914                         r_shadow_lightingrendermode = R_SHADOW_RENDERMODE_LIGHT_VERTEX;
1915                 break;
1916         }
1917
1918         CHECKGLERROR
1919 #if 0
1920         qglGetIntegerv(GL_DRAW_BUFFER, &drawbuffer);CHECKGLERROR
1921         qglGetIntegerv(GL_READ_BUFFER, &readbuffer);CHECKGLERROR
1922         r_shadow_drawbuffer = drawbuffer;
1923         r_shadow_readbuffer = readbuffer;
1924 #endif
1925         r_shadow_cullface_front = r_refdef.view.cullface_front;
1926         r_shadow_cullface_back = r_refdef.view.cullface_back;
1927 }
1928
1929 void R_Shadow_RenderMode_ActiveLight(const rtlight_t *rtlight)
1930 {
1931         rsurface.rtlight = rtlight;
1932 }
1933
1934 void R_Shadow_RenderMode_Reset(void)
1935 {
1936         R_Mesh_ResetRenderTargets();
1937         R_SetViewport(&r_refdef.view.viewport);
1938         GL_Scissor(r_shadow_lightscissor[0], r_shadow_lightscissor[1], r_shadow_lightscissor[2], r_shadow_lightscissor[3]);
1939         R_Mesh_ResetTextureState();
1940 //      R_Mesh_PrepareVertices_Position(0, resetvertexposition, NULL);
1941         GL_DepthRange(0, 1);
1942         GL_DepthTest(true);
1943         GL_DepthMask(false);
1944         GL_DepthFunc(GL_LEQUAL);
1945         GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);CHECKGLERROR
1946         r_refdef.view.cullface_front = r_shadow_cullface_front;
1947         r_refdef.view.cullface_back = r_shadow_cullface_back;
1948         GL_CullFace(r_refdef.view.cullface_back);
1949         GL_Color(1, 1, 1, 1);
1950         GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
1951         GL_BlendFunc(GL_ONE, GL_ZERO);
1952         R_SetupShader_Generic(NULL, NULL, GL_MODULATE, 1);
1953         r_shadow_usingshadowmap2d = false;
1954         r_shadow_usingshadowmaportho = false;
1955         R_SetStencil(false, 255, GL_KEEP, GL_KEEP, GL_KEEP, GL_ALWAYS, 128, 255);
1956 }
1957
1958 void R_Shadow_ClearStencil(void)
1959 {
1960         GL_Clear(GL_STENCIL_BUFFER_BIT, NULL, 1.0f, 128);
1961         r_refdef.stats.lights_clears++;
1962 }
1963
1964 void R_Shadow_RenderMode_StencilShadowVolumes(qboolean zpass)
1965 {
1966         r_shadow_rendermode_t mode = zpass ? r_shadow_shadowingrendermode_zpass : r_shadow_shadowingrendermode_zfail;
1967         if (r_shadow_rendermode == mode)
1968                 return;
1969         R_Shadow_RenderMode_Reset();
1970         GL_DepthFunc(GL_LESS);
1971         GL_ColorMask(0, 0, 0, 0);
1972         GL_PolygonOffset(r_refdef.shadowpolygonfactor, r_refdef.shadowpolygonoffset);CHECKGLERROR
1973         GL_CullFace(GL_NONE);
1974         R_SetupShader_DepthOrShadow();
1975         r_shadow_rendermode = mode;
1976         switch(mode)
1977         {
1978         default:
1979                 break;
1980         case R_SHADOW_RENDERMODE_ZPASS_STENCILTWOSIDE:
1981         case R_SHADOW_RENDERMODE_ZPASS_SEPARATESTENCIL:
1982                 R_SetStencilSeparate(true, 255, GL_KEEP, GL_KEEP, GL_INCR, GL_KEEP, GL_KEEP, GL_DECR, GL_ALWAYS, GL_ALWAYS, 128, 255);
1983                 break;
1984         case R_SHADOW_RENDERMODE_ZFAIL_STENCILTWOSIDE:
1985         case R_SHADOW_RENDERMODE_ZFAIL_SEPARATESTENCIL:
1986                 R_SetStencilSeparate(true, 255, GL_KEEP, GL_INCR, GL_KEEP, GL_KEEP, GL_DECR, GL_KEEP, GL_ALWAYS, GL_ALWAYS, 128, 255);
1987                 break;
1988         }
1989 }
1990
1991 static void R_Shadow_MakeVSDCT(void)
1992 {
1993         // maps to a 2x3 texture rectangle with normalized coordinates
1994         // +-
1995         // XX
1996         // YY
1997         // ZZ
1998         // stores abs(dir.xy), offset.xy/2.5
1999         unsigned char data[4*6] =
2000         {
2001                 255, 0, 0x33, 0x33, // +X: <1, 0>, <0.5, 0.5>
2002                 255, 0, 0x99, 0x33, // -X: <1, 0>, <1.5, 0.5>
2003                 0, 255, 0x33, 0x99, // +Y: <0, 1>, <0.5, 1.5>
2004                 0, 255, 0x99, 0x99, // -Y: <0, 1>, <1.5, 1.5>
2005                 0,   0, 0x33, 0xFF, // +Z: <0, 0>, <0.5, 2.5>
2006                 0,   0, 0x99, 0xFF, // -Z: <0, 0>, <1.5, 2.5>
2007         };
2008         r_shadow_shadowmapvsdcttexture = R_LoadTextureCubeMap(r_shadow_texturepool, "shadowmapvsdct", 1, data, TEXTYPE_RGBA, TEXF_FORCENEAREST | TEXF_CLAMP | TEXF_ALPHA, -1, NULL);
2009 }
2010
2011 static void R_Shadow_MakeShadowMap(int side, int size)
2012 {
2013         switch (r_shadow_shadowmode)
2014         {
2015         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
2016                 if (r_shadow_shadowmap2dtexture) return;
2017                 r_shadow_shadowmap2dtexture = R_LoadTextureShadowMap2D(r_shadow_texturepool, "shadowmap", size*2, size*(vid.support.arb_texture_non_power_of_two ? 3 : 4), r_shadow_shadowmapdepthbits, r_shadow_shadowmapsampler);
2018                 r_shadow_shadowmap2dcolortexture = NULL;
2019                 switch(vid.renderpath)
2020                 {
2021 #ifdef SUPPORTD3D
2022                 case RENDERPATH_D3D9:
2023                         r_shadow_shadowmap2dcolortexture = R_LoadTexture2D(r_shadow_texturepool, "shadowmaprendertarget", size*2, size*(vid.support.arb_texture_non_power_of_two ? 3 : 4), NULL, TEXTYPE_BGRA, TEXF_RENDERTARGET | TEXF_FORCENEAREST | TEXF_CLAMP | TEXF_ALPHA, -1, NULL);
2024                         r_shadow_fbo2d = R_Mesh_CreateFramebufferObject(r_shadow_shadowmap2dtexture, r_shadow_shadowmap2dcolortexture, NULL, NULL, NULL);
2025                         break;
2026 #endif
2027                 default:
2028                         r_shadow_fbo2d = R_Mesh_CreateFramebufferObject(r_shadow_shadowmap2dtexture, NULL, NULL, NULL, NULL);
2029                         break;
2030                 }
2031                 break;
2032         default:
2033                 return;
2034         }
2035
2036         // render depth into the fbo, do not render color at all
2037         // validate the fbo now
2038         if (qglDrawBuffer)
2039         {
2040                 int status;
2041                 qglDrawBuffer(GL_NONE);CHECKGLERROR
2042                 qglReadBuffer(GL_NONE);CHECKGLERROR
2043                 status = qglCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);CHECKGLERROR
2044                 if (status != GL_FRAMEBUFFER_COMPLETE_EXT && (r_shadow_shadowmapping.integer || r_shadow_deferred.integer))
2045                 {
2046                         Con_Printf("R_Shadow_MakeShadowMap: glCheckFramebufferStatusEXT returned %i\n", status);
2047                         Cvar_SetValueQuick(&r_shadow_shadowmapping, 0);
2048                         Cvar_SetValueQuick(&r_shadow_deferred, 0);
2049                 }
2050         }
2051 }
2052
2053 void R_Shadow_RenderMode_ShadowMap(int side, int clear, int size)
2054 {
2055         float nearclip, farclip, bias;
2056         r_viewport_t viewport;
2057         int flipped;
2058         GLuint fbo = 0;
2059         float clearcolor[4];
2060         nearclip = r_shadow_shadowmapping_nearclip.value / rsurface.rtlight->radius;
2061         farclip = 1.0f;
2062         bias = r_shadow_shadowmapping_bias.value * nearclip * (1024.0f / size);// * rsurface.rtlight->radius;
2063         r_shadow_shadowmap_parameters[1] = -nearclip * farclip / (farclip - nearclip) - 0.5f * bias;
2064         r_shadow_shadowmap_parameters[3] = 0.5f + 0.5f * (farclip + nearclip) / (farclip - nearclip);
2065         r_shadow_shadowmapside = side;
2066         r_shadow_shadowmapsize = size;
2067
2068         r_shadow_shadowmap_parameters[0] = 0.5f * (size - r_shadow_shadowmapborder);
2069         r_shadow_shadowmap_parameters[2] = r_shadow_shadowmapvsdct ? 2.5f*size : size;
2070         R_Viewport_InitRectSideView(&viewport, &rsurface.rtlight->matrix_lighttoworld, side, size, r_shadow_shadowmapborder, nearclip, farclip, NULL);
2071         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_SHADOWMAP2D) goto init_done;
2072
2073         // complex unrolled cube approach (more flexible)
2074         if (r_shadow_shadowmapvsdct && !r_shadow_shadowmapvsdcttexture)
2075                 R_Shadow_MakeVSDCT();
2076         if (!r_shadow_shadowmap2dtexture)
2077                 R_Shadow_MakeShadowMap(side, r_shadow_shadowmapmaxsize);
2078         if (r_shadow_shadowmap2dtexture) fbo = r_shadow_fbo2d;
2079         r_shadow_shadowmap_texturescale[0] = 1.0f / R_TextureWidth(r_shadow_shadowmap2dtexture);
2080         r_shadow_shadowmap_texturescale[1] = 1.0f / R_TextureHeight(r_shadow_shadowmap2dtexture);
2081         r_shadow_rendermode = R_SHADOW_RENDERMODE_SHADOWMAP2D;
2082
2083         R_Mesh_ResetTextureState();
2084         R_Mesh_ResetRenderTargets();
2085         R_Shadow_RenderMode_Reset();
2086         if (fbo)
2087         {
2088                 R_Mesh_SetRenderTargets(fbo, r_shadow_shadowmap2dtexture, r_shadow_shadowmap2dcolortexture, NULL, NULL, NULL);
2089                 R_SetupShader_DepthOrShadow();
2090         }
2091         else
2092                 R_SetupShader_ShowDepth();
2093         GL_PolygonOffset(r_shadow_shadowmapping_polygonfactor.value, r_shadow_shadowmapping_polygonoffset.value);
2094         GL_DepthMask(true);
2095         GL_DepthTest(true);
2096
2097 init_done:
2098         R_SetViewport(&viewport);
2099         flipped = (side & 1) ^ (side >> 2);
2100         r_refdef.view.cullface_front = flipped ? r_shadow_cullface_back : r_shadow_cullface_front;
2101         r_refdef.view.cullface_back = flipped ? r_shadow_cullface_front : r_shadow_cullface_back;
2102         switch(vid.renderpath)
2103         {
2104         case RENDERPATH_GL11:
2105         case RENDERPATH_GL13:
2106         case RENDERPATH_GL20:
2107         case RENDERPATH_CGGL:
2108                 GL_CullFace(r_refdef.view.cullface_back);
2109                 // OpenGL lets us scissor larger than the viewport, so go ahead and clear all views at once
2110                 if ((clear & ((2 << side) - 1)) == (1 << side)) // only clear if the side is the first in the mask
2111                 {
2112                         // get tightest scissor rectangle that encloses all viewports in the clear mask
2113                         int x1 = clear & 0x15 ? 0 : size;
2114                         int x2 = clear & 0x2A ? 2 * size : size;
2115                         int y1 = clear & 0x03 ? 0 : (clear & 0xC ? size : 2 * size);
2116                         int y2 = clear & 0x30 ? 3 * size : (clear & 0xC ? 2 * size : size);
2117                         GL_Scissor(x1, y1, x2 - x1, y2 - y1);
2118                         GL_Clear(GL_DEPTH_BUFFER_BIT, NULL, 1.0f, 0);
2119                 }
2120                 GL_Scissor(viewport.x, viewport.y, viewport.width, viewport.height);
2121                 break;
2122         case RENDERPATH_D3D9:
2123                 Vector4Set(clearcolor, 1,1,1,1);
2124                 // completely different meaning than in OpenGL path
2125                 r_shadow_shadowmap_parameters[1] = 0;
2126                 r_shadow_shadowmap_parameters[3] = -bias;
2127                 // we invert the cull mode because we flip the projection matrix
2128                 // NOTE: this actually does nothing because the DrawShadowMap code sets it to doublesided...
2129                 GL_CullFace(r_refdef.view.cullface_front);
2130                 // D3D considers it an error to use a scissor larger than the viewport...  clear just this view
2131                 GL_Scissor(viewport.x, viewport.y, viewport.width, viewport.height);
2132                 if (r_shadow_shadowmapsampler)
2133                 {
2134                         GL_ColorMask(0,0,0,0);
2135                         if (clear)
2136                                 GL_Clear(GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
2137                 }
2138                 else
2139                 {
2140                         GL_ColorMask(1,1,1,1);
2141                         if (clear)
2142                                 GL_Clear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT, clearcolor, 1.0f, 0);
2143                 }
2144                 break;
2145         case RENDERPATH_D3D10:
2146         case RENDERPATH_D3D11:
2147                 // D3D considers it an error to use a scissor larger than the viewport...  clear just this view
2148                 GL_Scissor(viewport.x, viewport.y, viewport.width, viewport.height);
2149                 GL_ColorMask(0,0,0,0);
2150                 if (clear)
2151                         GL_Clear(GL_DEPTH_BUFFER_BIT, NULL, 1.0f, 0);
2152                 break;
2153         }
2154 }
2155
2156 void R_Shadow_RenderMode_Lighting(qboolean stenciltest, qboolean transparent, qboolean shadowmapping)
2157 {
2158         R_Mesh_ResetTextureState();
2159         R_Mesh_ResetRenderTargets();
2160         if (transparent)
2161         {
2162                 r_shadow_lightscissor[0] = r_refdef.view.viewport.x;
2163                 r_shadow_lightscissor[1] = r_refdef.view.viewport.y;
2164                 r_shadow_lightscissor[2] = r_refdef.view.viewport.width;
2165                 r_shadow_lightscissor[3] = r_refdef.view.viewport.height;
2166         }
2167         R_Shadow_RenderMode_Reset();
2168         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2169         if (!transparent)
2170                 GL_DepthFunc(GL_EQUAL);
2171         // do global setup needed for the chosen lighting mode
2172         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_LIGHT_GLSL)
2173                 GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 0);
2174         r_shadow_usingshadowmap2d = shadowmapping;
2175         r_shadow_rendermode = r_shadow_lightingrendermode;
2176         // only draw light where this geometry was already rendered AND the
2177         // stencil is 128 (values other than this mean shadow)
2178         if (stenciltest)
2179                 R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_KEEP, GL_EQUAL, 128, 255);
2180         else
2181                 R_SetStencil(false, 255, GL_KEEP, GL_KEEP, GL_KEEP, GL_ALWAYS, 128, 255);
2182 }
2183
2184 static const unsigned short bboxelements[36] =
2185 {
2186         5, 1, 3, 5, 3, 7,
2187         6, 2, 0, 6, 0, 4,
2188         7, 3, 2, 7, 2, 6,
2189         4, 0, 1, 4, 1, 5,
2190         4, 5, 7, 4, 7, 6,
2191         1, 0, 2, 1, 2, 3,
2192 };
2193
2194 static const float bboxpoints[8][3] =
2195 {
2196         {-1,-1,-1},
2197         { 1,-1,-1},
2198         {-1, 1,-1},
2199         { 1, 1,-1},
2200         {-1,-1, 1},
2201         { 1,-1, 1},
2202         {-1, 1, 1},
2203         { 1, 1, 1},
2204 };
2205
2206 void R_Shadow_RenderMode_DrawDeferredLight(qboolean stenciltest, qboolean shadowmapping)
2207 {
2208         int i;
2209         float vertex3f[8*3];
2210         const matrix4x4_t *matrix = &rsurface.rtlight->matrix_lighttoworld;
2211 // do global setup needed for the chosen lighting mode
2212         R_Shadow_RenderMode_Reset();
2213         r_shadow_rendermode = r_shadow_lightingrendermode;
2214         R_EntityMatrix(&identitymatrix);
2215         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2216         // only draw light where this geometry was already rendered AND the
2217         // stencil is 128 (values other than this mean shadow)
2218         R_SetStencil(stenciltest, 255, GL_KEEP, GL_KEEP, GL_KEEP, GL_EQUAL, 128, 255);
2219         R_Mesh_SetRenderTargets(r_shadow_prepasslightingfbo, r_shadow_prepassgeometrydepthtexture, r_shadow_prepasslightingdiffusetexture, r_shadow_prepasslightingspeculartexture, NULL, NULL);
2220
2221         r_shadow_usingshadowmap2d = shadowmapping;
2222
2223         // render the lighting
2224         R_SetupShader_DeferredLight(rsurface.rtlight);
2225         for (i = 0;i < 8;i++)
2226                 Matrix4x4_Transform(matrix, bboxpoints[i], vertex3f + i*3);
2227         GL_ColorMask(1,1,1,1);
2228         GL_DepthMask(false);
2229         GL_DepthRange(0, 1);
2230         GL_PolygonOffset(0, 0);
2231         GL_DepthTest(true);
2232         GL_DepthFunc(GL_GREATER);
2233         GL_CullFace(r_refdef.view.cullface_back);
2234         R_Mesh_PrepareVertices_Position_Arrays(8, vertex3f);
2235         R_Mesh_Draw(0, 8, 0, 12, NULL, NULL, 0, bboxelements, NULL, 0);
2236 }
2237
2238 void R_Shadow_RenderMode_VisibleShadowVolumes(void)
2239 {
2240         R_Shadow_RenderMode_Reset();
2241         GL_BlendFunc(GL_ONE, GL_ONE);
2242         GL_DepthRange(0, 1);
2243         GL_DepthTest(r_showshadowvolumes.integer < 2);
2244         GL_Color(0.0, 0.0125 * r_refdef.view.colorscale, 0.1 * r_refdef.view.colorscale, 1);
2245         GL_PolygonOffset(r_refdef.shadowpolygonfactor, r_refdef.shadowpolygonoffset);CHECKGLERROR
2246         GL_CullFace(GL_NONE);
2247         r_shadow_rendermode = R_SHADOW_RENDERMODE_VISIBLEVOLUMES;
2248 }
2249
2250 void R_Shadow_RenderMode_VisibleLighting(qboolean stenciltest, qboolean transparent)
2251 {
2252         R_Shadow_RenderMode_Reset();
2253         GL_BlendFunc(GL_ONE, GL_ONE);
2254         GL_DepthRange(0, 1);
2255         GL_DepthTest(r_showlighting.integer < 2);
2256         GL_Color(0.1 * r_refdef.view.colorscale, 0.0125 * r_refdef.view.colorscale, 0, 1);
2257         if (!transparent)
2258                 GL_DepthFunc(GL_EQUAL);
2259         R_SetStencil(stenciltest, 255, GL_KEEP, GL_KEEP, GL_KEEP, GL_EQUAL, 128, 255);
2260         r_shadow_rendermode = R_SHADOW_RENDERMODE_VISIBLELIGHTING;
2261 }
2262
2263 void R_Shadow_RenderMode_End(void)
2264 {
2265         R_Shadow_RenderMode_Reset();
2266         R_Shadow_RenderMode_ActiveLight(NULL);
2267         GL_DepthMask(true);
2268         GL_Scissor(r_refdef.view.viewport.x, r_refdef.view.viewport.y, r_refdef.view.viewport.width, r_refdef.view.viewport.height);
2269         r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
2270 }
2271
2272 int bboxedges[12][2] =
2273 {
2274         // top
2275         {0, 1}, // +X
2276         {0, 2}, // +Y
2277         {1, 3}, // Y, +X
2278         {2, 3}, // X, +Y
2279         // bottom
2280         {4, 5}, // +X
2281         {4, 6}, // +Y
2282         {5, 7}, // Y, +X
2283         {6, 7}, // X, +Y
2284         // verticals
2285         {0, 4}, // +Z
2286         {1, 5}, // X, +Z
2287         {2, 6}, // Y, +Z
2288         {3, 7}, // XY, +Z
2289 };
2290
2291 qboolean R_Shadow_ScissorForBBox(const float *mins, const float *maxs)
2292 {
2293         if (!r_shadow_scissor.integer)
2294         {
2295                 r_shadow_lightscissor[0] = r_refdef.view.viewport.x;
2296                 r_shadow_lightscissor[1] = r_refdef.view.viewport.y;
2297                 r_shadow_lightscissor[2] = r_refdef.view.viewport.width;
2298                 r_shadow_lightscissor[3] = r_refdef.view.viewport.height;
2299                 return false;
2300         }
2301         if(R_ScissorForBBox(mins, maxs, r_shadow_lightscissor))
2302                 return true; // invisible
2303         if(r_shadow_lightscissor[0] != r_refdef.view.viewport.x
2304         || r_shadow_lightscissor[1] != r_refdef.view.viewport.y
2305         || r_shadow_lightscissor[2] != r_refdef.view.viewport.width
2306         || r_shadow_lightscissor[3] != r_refdef.view.viewport.height)
2307                 r_refdef.stats.lights_scissored++;
2308         return false;
2309 }
2310
2311 static void R_Shadow_RenderLighting_Light_Vertex_Shading(int firstvertex, int numverts, const float *diffusecolor, const float *ambientcolor)
2312 {
2313         int i;
2314         const float *vertex3f;
2315         const float *normal3f;
2316         float *color4f;
2317         float dist, dot, distintensity, shadeintensity, v[3], n[3];
2318         switch (r_shadow_rendermode)
2319         {
2320         case R_SHADOW_RENDERMODE_LIGHT_VERTEX3DATTEN:
2321         case R_SHADOW_RENDERMODE_LIGHT_VERTEX2D1DATTEN:
2322                 if (VectorLength2(diffusecolor) > 0)
2323                 {
2324                         for (i = 0, vertex3f = rsurface.batchvertex3f + 3*firstvertex, normal3f = rsurface.batchnormal3f + 3*firstvertex, color4f = rsurface.array_passcolor4f + 4 * firstvertex;i < numverts;i++, vertex3f += 3, normal3f += 3, color4f += 4)
2325                         {
2326                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
2327                                 Matrix4x4_Transform3x3(&rsurface.entitytolight, normal3f, n);
2328                                 if ((dot = DotProduct(n, v)) < 0)
2329                                 {
2330                                         shadeintensity = -dot / sqrt(VectorLength2(v) * VectorLength2(n));
2331                                         VectorMA(ambientcolor, shadeintensity, diffusecolor, color4f);
2332                                 }
2333                                 else
2334                                         VectorCopy(ambientcolor, color4f);
2335                                 if (r_refdef.fogenabled)
2336                                 {
2337                                         float f;
2338                                         f = RSurf_FogVertex(vertex3f);
2339                                         VectorScale(color4f, f, color4f);
2340                                 }
2341                                 color4f[3] = 1;
2342                         }
2343                 }
2344                 else
2345                 {
2346                         for (i = 0, vertex3f = rsurface.batchvertex3f + 3*firstvertex, color4f = rsurface.array_passcolor4f + 4 * firstvertex;i < numverts;i++, vertex3f += 3, color4f += 4)
2347                         {
2348                                 VectorCopy(ambientcolor, color4f);
2349                                 if (r_refdef.fogenabled)
2350                                 {
2351                                         float f;
2352                                         Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
2353                                         f = RSurf_FogVertex(vertex3f);
2354                                         VectorScale(color4f + 4*i, f, color4f);
2355                                 }
2356                                 color4f[3] = 1;
2357                         }
2358                 }
2359                 break;
2360         case R_SHADOW_RENDERMODE_LIGHT_VERTEX2DATTEN:
2361                 if (VectorLength2(diffusecolor) > 0)
2362                 {
2363                         for (i = 0, vertex3f = rsurface.batchvertex3f + 3*firstvertex, normal3f = rsurface.batchnormal3f + 3*firstvertex, color4f = rsurface.array_passcolor4f + 4 * firstvertex;i < numverts;i++, vertex3f += 3, normal3f += 3, color4f += 4)
2364                         {
2365                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
2366                                 if ((dist = fabs(v[2])) < 1 && (distintensity = r_shadow_attentable[(int)(dist * ATTENTABLESIZE)]))
2367                                 {
2368                                         Matrix4x4_Transform3x3(&rsurface.entitytolight, normal3f, n);
2369                                         if ((dot = DotProduct(n, v)) < 0)
2370                                         {
2371                                                 shadeintensity = -dot / sqrt(VectorLength2(v) * VectorLength2(n));
2372                                                 color4f[0] = (ambientcolor[0] + shadeintensity * diffusecolor[0]) * distintensity;
2373                                                 color4f[1] = (ambientcolor[1] + shadeintensity * diffusecolor[1]) * distintensity;
2374                                                 color4f[2] = (ambientcolor[2] + shadeintensity * diffusecolor[2]) * distintensity;
2375                                         }
2376                                         else
2377                                         {
2378                                                 color4f[0] = ambientcolor[0] * distintensity;
2379                                                 color4f[1] = ambientcolor[1] * distintensity;
2380                                                 color4f[2] = ambientcolor[2] * distintensity;
2381                                         }
2382                                         if (r_refdef.fogenabled)
2383                                         {
2384                                                 float f;
2385                                                 f = RSurf_FogVertex(vertex3f);
2386                                                 VectorScale(color4f, f, color4f);
2387                                         }
2388                                 }
2389                                 else
2390                                         VectorClear(color4f);
2391                                 color4f[3] = 1;
2392                         }
2393                 }
2394                 else
2395                 {
2396                         for (i = 0, vertex3f = rsurface.batchvertex3f + 3*firstvertex, color4f = rsurface.array_passcolor4f + 4 * firstvertex;i < numverts;i++, vertex3f += 3, color4f += 4)
2397                         {
2398                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
2399                                 if ((dist = fabs(v[2])) < 1 && (distintensity = r_shadow_attentable[(int)(dist * ATTENTABLESIZE)]))
2400                                 {
2401                                         color4f[0] = ambientcolor[0] * distintensity;
2402                                         color4f[1] = ambientcolor[1] * distintensity;
2403                                         color4f[2] = ambientcolor[2] * distintensity;
2404                                         if (r_refdef.fogenabled)
2405                                         {
2406                                                 float f;
2407                                                 f = RSurf_FogVertex(vertex3f);
2408                                                 VectorScale(color4f, f, color4f);
2409                                         }
2410                                 }
2411                                 else
2412                                         VectorClear(color4f);
2413                                 color4f[3] = 1;
2414                         }
2415                 }
2416                 break;
2417         case R_SHADOW_RENDERMODE_LIGHT_VERTEX:
2418                 if (VectorLength2(diffusecolor) > 0)
2419                 {
2420                         for (i = 0, vertex3f = rsurface.batchvertex3f + 3*firstvertex, normal3f = rsurface.batchnormal3f + 3*firstvertex, color4f = rsurface.array_passcolor4f + 4 * firstvertex;i < numverts;i++, vertex3f += 3, normal3f += 3, color4f += 4)
2421                         {
2422                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
2423                                 if ((dist = VectorLength(v)) < 1 && (distintensity = r_shadow_attentable[(int)(dist * ATTENTABLESIZE)]))
2424                                 {
2425                                         distintensity = (1 - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist);
2426                                         Matrix4x4_Transform3x3(&rsurface.entitytolight, normal3f, n);
2427                                         if ((dot = DotProduct(n, v)) < 0)
2428                                         {
2429                                                 shadeintensity = -dot / sqrt(VectorLength2(v) * VectorLength2(n));
2430                                                 color4f[0] = (ambientcolor[0] + shadeintensity * diffusecolor[0]) * distintensity;
2431                                                 color4f[1] = (ambientcolor[1] + shadeintensity * diffusecolor[1]) * distintensity;
2432                                                 color4f[2] = (ambientcolor[2] + shadeintensity * diffusecolor[2]) * distintensity;
2433                                         }
2434                                         else
2435                                         {
2436                                                 color4f[0] = ambientcolor[0] * distintensity;
2437                                                 color4f[1] = ambientcolor[1] * distintensity;
2438                                                 color4f[2] = ambientcolor[2] * distintensity;
2439                                         }
2440                                         if (r_refdef.fogenabled)
2441                                         {
2442                                                 float f;
2443                                                 f = RSurf_FogVertex(vertex3f);
2444                                                 VectorScale(color4f, f, color4f);
2445                                         }
2446                                 }
2447                                 else
2448                                         VectorClear(color4f);
2449                                 color4f[3] = 1;
2450                         }
2451                 }
2452                 else
2453                 {
2454                         for (i = 0, vertex3f = rsurface.batchvertex3f + 3*firstvertex, color4f = rsurface.array_passcolor4f + 4 * firstvertex;i < numverts;i++, vertex3f += 3, color4f += 4)
2455                         {
2456                                 Matrix4x4_Transform(&rsurface.entitytolight, vertex3f, v);
2457                                 if ((dist = VectorLength(v)) < 1 && (distintensity = r_shadow_attentable[(int)(dist * ATTENTABLESIZE)]))
2458                                 {
2459                                         distintensity = (1 - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist);
2460                                         color4f[0] = ambientcolor[0] * distintensity;
2461                                         color4f[1] = ambientcolor[1] * distintensity;
2462                                         color4f[2] = ambientcolor[2] * distintensity;
2463                                         if (r_refdef.fogenabled)
2464                                         {
2465                                                 float f;
2466                                                 f = RSurf_FogVertex(vertex3f);
2467                                                 VectorScale(color4f, f, color4f);
2468                                         }
2469                                 }
2470                                 else
2471                                         VectorClear(color4f);
2472                                 color4f[3] = 1;
2473                         }
2474                 }
2475                 break;
2476         default:
2477                 break;
2478         }
2479 }
2480
2481 static void R_Shadow_RenderLighting_VisibleLighting(int texturenumsurfaces, const msurface_t **texturesurfacelist)
2482 {
2483         // used to display how many times a surface is lit for level design purposes
2484         RSurf_PrepareVerticesForBatch(BATCHNEED_ARRAY_VERTEX | BATCHNEED_NOGAPS, texturenumsurfaces, texturesurfacelist);
2485         R_Mesh_PrepareVertices_Generic_Arrays(rsurface.batchnumvertices, rsurface.batchvertex3f, NULL, NULL);
2486         RSurf_DrawBatch();
2487 }
2488
2489 static void R_Shadow_RenderLighting_Light_GLSL(int texturenumsurfaces, const msurface_t **texturesurfacelist, const vec3_t lightcolor, float ambientscale, float diffusescale, float specularscale)
2490 {
2491         // ARB2 GLSL shader path (GFFX5200, Radeon 9500)
2492         R_SetupShader_Surface(lightcolor, false, ambientscale, diffusescale, specularscale, RSURFPASS_RTLIGHT, texturenumsurfaces, texturesurfacelist, NULL);
2493         if (rsurface.texture->currentmaterialflags & MATERIALFLAG_ALPHATEST)
2494                 GL_DepthFunc(GL_EQUAL);
2495         RSurf_DrawBatch();
2496         if (rsurface.texture->currentmaterialflags & MATERIALFLAG_ALPHATEST)
2497                 GL_DepthFunc(GL_LEQUAL);
2498 }
2499
2500 static void R_Shadow_RenderLighting_Light_Vertex_Pass(int firstvertex, int numvertices, int numtriangles, const int *element3i, vec3_t diffusecolor2, vec3_t ambientcolor2)
2501 {
2502         int renders;
2503         int i;
2504         int stop;
2505         int newfirstvertex;
2506         int newlastvertex;
2507         int newnumtriangles;
2508         int *newe;
2509         const int *e;
2510         float *c;
2511         int maxtriangles = 4096;
2512         static int newelements[4096*3];
2513         R_Shadow_RenderLighting_Light_Vertex_Shading(firstvertex, numvertices, diffusecolor2, ambientcolor2);
2514         for (renders = 0;renders < 4;renders++)
2515         {
2516                 stop = true;
2517                 newfirstvertex = 0;
2518                 newlastvertex = 0;
2519                 newnumtriangles = 0;
2520                 newe = newelements;
2521                 // due to low fillrate on the cards this vertex lighting path is
2522                 // designed for, we manually cull all triangles that do not
2523                 // contain a lit vertex
2524                 // this builds batches of triangles from multiple surfaces and
2525                 // renders them at once
2526                 for (i = 0, e = element3i;i < numtriangles;i++, e += 3)
2527                 {
2528                         if (VectorLength2(rsurface.array_passcolor4f + e[0] * 4) + VectorLength2(rsurface.array_passcolor4f + e[1] * 4) + VectorLength2(rsurface.array_passcolor4f + e[2] * 4) >= 0.01)
2529                         {
2530                                 if (newnumtriangles)
2531                                 {
2532                                         newfirstvertex = min(newfirstvertex, e[0]);
2533                                         newlastvertex  = max(newlastvertex, e[0]);
2534                                 }
2535                                 else
2536                                 {
2537                                         newfirstvertex = e[0];
2538                                         newlastvertex = e[0];
2539                                 }
2540                                 newfirstvertex = min(newfirstvertex, e[1]);
2541                                 newlastvertex  = max(newlastvertex, e[1]);
2542                                 newfirstvertex = min(newfirstvertex, e[2]);
2543                                 newlastvertex  = max(newlastvertex, e[2]);
2544                                 newe[0] = e[0];
2545                                 newe[1] = e[1];
2546                                 newe[2] = e[2];
2547                                 newnumtriangles++;
2548                                 newe += 3;
2549                                 if (newnumtriangles >= maxtriangles)
2550                                 {
2551                                         R_Mesh_Draw(newfirstvertex, newlastvertex - newfirstvertex + 1, 0, newnumtriangles, newelements, NULL, 0, NULL, NULL, 0);
2552                                         newnumtriangles = 0;
2553                                         newe = newelements;
2554                                         stop = false;
2555                                 }
2556                         }
2557                 }
2558                 if (newnumtriangles >= 1)
2559                 {
2560                         R_Mesh_Draw(newfirstvertex, newlastvertex - newfirstvertex + 1, 0, newnumtriangles, newelements, NULL, 0, NULL, NULL, 0);
2561                         stop = false;
2562                 }
2563                 // if we couldn't find any lit triangles, exit early
2564                 if (stop)
2565                         break;
2566                 // now reduce the intensity for the next overbright pass
2567                 // we have to clamp to 0 here incase the drivers have improper
2568                 // handling of negative colors
2569                 // (some old drivers even have improper handling of >1 color)
2570                 stop = true;
2571                 for (i = 0, c = rsurface.array_passcolor4f + 4 * firstvertex;i < numvertices;i++, c += 4)
2572                 {
2573                         if (c[0] > 1 || c[1] > 1 || c[2] > 1)
2574                         {
2575                                 c[0] = max(0, c[0] - 1);
2576                                 c[1] = max(0, c[1] - 1);
2577                                 c[2] = max(0, c[2] - 1);
2578                                 stop = false;
2579                         }
2580                         else
2581                                 VectorClear(c);
2582                 }
2583                 // another check...
2584                 if (stop)
2585                         break;
2586         }
2587 }
2588
2589 static void R_Shadow_RenderLighting_Light_Vertex(int texturenumsurfaces, const msurface_t **texturesurfacelist, const vec3_t lightcolor, float ambientscale, float diffusescale)
2590 {
2591         // OpenGL 1.1 path (anything)
2592         float ambientcolorbase[3], diffusecolorbase[3];
2593         float ambientcolorpants[3], diffusecolorpants[3];
2594         float ambientcolorshirt[3], diffusecolorshirt[3];
2595         const float *surfacecolor = rsurface.texture->dlightcolor;
2596         const float *surfacepants = rsurface.colormap_pantscolor;
2597         const float *surfaceshirt = rsurface.colormap_shirtcolor;
2598         rtexture_t *basetexture = rsurface.texture->basetexture;
2599         rtexture_t *pantstexture = rsurface.texture->pantstexture;
2600         rtexture_t *shirttexture = rsurface.texture->shirttexture;
2601         qboolean dopants = pantstexture && VectorLength2(surfacepants) >= (1.0f / 1048576.0f);
2602         qboolean doshirt = shirttexture && VectorLength2(surfaceshirt) >= (1.0f / 1048576.0f);
2603         ambientscale *= 2 * r_refdef.view.colorscale;
2604         diffusescale *= 2 * r_refdef.view.colorscale;
2605         ambientcolorbase[0] = lightcolor[0] * ambientscale * surfacecolor[0];ambientcolorbase[1] = lightcolor[1] * ambientscale * surfacecolor[1];ambientcolorbase[2] = lightcolor[2] * ambientscale * surfacecolor[2];
2606         diffusecolorbase[0] = lightcolor[0] * diffusescale * surfacecolor[0];diffusecolorbase[1] = lightcolor[1] * diffusescale * surfacecolor[1];diffusecolorbase[2] = lightcolor[2] * diffusescale * surfacecolor[2];
2607         ambientcolorpants[0] = ambientcolorbase[0] * surfacepants[0];ambientcolorpants[1] = ambientcolorbase[1] * surfacepants[1];ambientcolorpants[2] = ambientcolorbase[2] * surfacepants[2];
2608         diffusecolorpants[0] = diffusecolorbase[0] * surfacepants[0];diffusecolorpants[1] = diffusecolorbase[1] * surfacepants[1];diffusecolorpants[2] = diffusecolorbase[2] * surfacepants[2];
2609         ambientcolorshirt[0] = ambientcolorbase[0] * surfaceshirt[0];ambientcolorshirt[1] = ambientcolorbase[1] * surfaceshirt[1];ambientcolorshirt[2] = ambientcolorbase[2] * surfaceshirt[2];
2610         diffusecolorshirt[0] = diffusecolorbase[0] * surfaceshirt[0];diffusecolorshirt[1] = diffusecolorbase[1] * surfaceshirt[1];diffusecolorshirt[2] = diffusecolorbase[2] * surfaceshirt[2];
2611         RSurf_PrepareVerticesForBatch(BATCHNEED_ARRAY_VERTEX | (diffusescale > 0 ? BATCHNEED_ARRAY_NORMAL : 0) | BATCHNEED_ARRAY_TEXCOORD, texturenumsurfaces, texturesurfacelist);
2612         R_Mesh_VertexPointer(3, GL_FLOAT, sizeof(float[3]), rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
2613         R_Mesh_ColorPointer(4, GL_FLOAT, sizeof(float[4]), rsurface.array_passcolor4f, 0, 0);
2614         R_Mesh_TexCoordPointer(0, 2, GL_FLOAT, sizeof(float[2]), rsurface.batchtexcoordtexture2f, rsurface.batchtexcoordtexture2f_vertexbuffer, rsurface.batchtexcoordtexture2f_bufferoffset);
2615         R_Mesh_TexBind(0, basetexture);
2616         R_Mesh_TexMatrix(0, &rsurface.texture->currenttexmatrix);
2617         R_Mesh_TexCombine(0, GL_MODULATE, GL_MODULATE, 1, 1);
2618         switch(r_shadow_rendermode)
2619         {
2620         case R_SHADOW_RENDERMODE_LIGHT_VERTEX3DATTEN:
2621                 R_Mesh_TexBind(1, r_shadow_attenuation3dtexture);
2622                 R_Mesh_TexMatrix(1, &rsurface.entitytoattenuationxyz);
2623                 R_Mesh_TexCombine(1, GL_MODULATE, GL_MODULATE, 1, 1);
2624                 R_Mesh_TexCoordPointer(1, 3, GL_FLOAT, sizeof(float[3]), rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
2625                 break;
2626         case R_SHADOW_RENDERMODE_LIGHT_VERTEX2D1DATTEN:
2627                 R_Mesh_TexBind(2, r_shadow_attenuation2dtexture);
2628                 R_Mesh_TexMatrix(2, &rsurface.entitytoattenuationz);
2629                 R_Mesh_TexCombine(2, GL_MODULATE, GL_MODULATE, 1, 1);
2630                 R_Mesh_TexCoordPointer(2, 3, GL_FLOAT, sizeof(float[3]), rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
2631                 // fall through
2632         case R_SHADOW_RENDERMODE_LIGHT_VERTEX2DATTEN:
2633                 R_Mesh_TexBind(1, r_shadow_attenuation2dtexture);
2634                 R_Mesh_TexMatrix(1, &rsurface.entitytoattenuationxyz);
2635                 R_Mesh_TexCombine(1, GL_MODULATE, GL_MODULATE, 1, 1);
2636                 R_Mesh_TexCoordPointer(1, 3, GL_FLOAT, sizeof(float[3]), rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
2637                 break;
2638         case R_SHADOW_RENDERMODE_LIGHT_VERTEX:
2639                 break;
2640         default:
2641                 break;
2642         }
2643         //R_Mesh_TexBind(0, basetexture);
2644         R_Shadow_RenderLighting_Light_Vertex_Pass(rsurface.batchfirstvertex, rsurface.batchnumvertices, rsurface.batchnumtriangles, rsurface.batchelement3i + 3*rsurface.batchfirsttriangle, diffusecolorbase, ambientcolorbase);
2645         if (dopants)
2646         {
2647                 R_Mesh_TexBind(0, pantstexture);
2648                 R_Shadow_RenderLighting_Light_Vertex_Pass(rsurface.batchfirstvertex, rsurface.batchnumvertices, rsurface.batchnumtriangles, rsurface.batchelement3i + 3*rsurface.batchfirsttriangle, diffusecolorpants, ambientcolorpants);
2649         }
2650         if (doshirt)
2651         {
2652                 R_Mesh_TexBind(0, shirttexture);
2653                 R_Shadow_RenderLighting_Light_Vertex_Pass(rsurface.batchfirstvertex, rsurface.batchnumvertices, rsurface.batchnumtriangles, rsurface.batchelement3i + 3*rsurface.batchfirsttriangle, diffusecolorshirt, ambientcolorshirt);
2654         }
2655 }
2656
2657 extern cvar_t gl_lightmaps;
2658 void R_Shadow_RenderLighting(int texturenumsurfaces, const msurface_t **texturesurfacelist)
2659 {
2660         float ambientscale, diffusescale, specularscale;
2661         qboolean negated;
2662         float lightcolor[3];
2663         VectorCopy(rsurface.rtlight->currentcolor, lightcolor);
2664         ambientscale = rsurface.rtlight->ambientscale;
2665         diffusescale = rsurface.rtlight->diffusescale;
2666         specularscale = rsurface.rtlight->specularscale * rsurface.texture->specularscale;
2667         if (!r_shadow_usenormalmap.integer)
2668         {
2669                 ambientscale += 1.0f * diffusescale;
2670                 diffusescale = 0;
2671                 specularscale = 0;
2672         }
2673         if ((ambientscale + diffusescale) * VectorLength2(lightcolor) + specularscale * VectorLength2(lightcolor) < (1.0f / 1048576.0f))
2674                 return;
2675         negated = (lightcolor[0] + lightcolor[1] + lightcolor[2] < 0) && vid.support.ext_blend_subtract;
2676         if(negated)
2677         {
2678                 VectorNegate(lightcolor, lightcolor);
2679                 switch(vid.renderpath)
2680                 {
2681                 case RENDERPATH_GL11:
2682                 case RENDERPATH_GL13:
2683                 case RENDERPATH_GL20:
2684                 case RENDERPATH_CGGL:
2685                         qglBlendEquationEXT(GL_FUNC_REVERSE_SUBTRACT_EXT);
2686                         break;
2687                 case RENDERPATH_D3D9:
2688 #ifdef SUPPORTD3D
2689                         IDirect3DDevice9_SetRenderState(vid_d3d9dev, D3DRS_BLENDOP, D3DBLENDOP_SUBTRACT);
2690 #endif
2691                         break;
2692                 case RENDERPATH_D3D10:
2693                         Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
2694                         break;
2695                 case RENDERPATH_D3D11:
2696                         Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
2697                         break;
2698                 }
2699         }
2700         RSurf_SetupDepthAndCulling();
2701         switch (r_shadow_rendermode)
2702         {
2703         case R_SHADOW_RENDERMODE_VISIBLELIGHTING:
2704                 GL_DepthTest(!(rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST) && !r_showdisabledepthtest.integer);
2705                 R_Shadow_RenderLighting_VisibleLighting(texturenumsurfaces, texturesurfacelist);
2706                 break;
2707         case R_SHADOW_RENDERMODE_LIGHT_GLSL:
2708                 R_Shadow_RenderLighting_Light_GLSL(texturenumsurfaces, texturesurfacelist, lightcolor, ambientscale, diffusescale, specularscale);
2709                 break;
2710         case R_SHADOW_RENDERMODE_LIGHT_VERTEX3DATTEN:
2711         case R_SHADOW_RENDERMODE_LIGHT_VERTEX2D1DATTEN:
2712         case R_SHADOW_RENDERMODE_LIGHT_VERTEX2DATTEN:
2713         case R_SHADOW_RENDERMODE_LIGHT_VERTEX:
2714                 R_Shadow_RenderLighting_Light_Vertex(texturenumsurfaces, texturesurfacelist, lightcolor, ambientscale, diffusescale);
2715                 break;
2716         default:
2717                 Con_Printf("R_Shadow_RenderLighting: unknown r_shadow_rendermode %i\n", r_shadow_rendermode);
2718                 break;
2719         }
2720         if(negated)
2721         {
2722                 switch(vid.renderpath)
2723                 {
2724                 case RENDERPATH_GL11:
2725                 case RENDERPATH_GL13:
2726                 case RENDERPATH_GL20:
2727                 case RENDERPATH_CGGL:
2728                         qglBlendEquationEXT(GL_FUNC_ADD_EXT);
2729                         break;
2730                 case RENDERPATH_D3D9:
2731 #ifdef SUPPORTD3D
2732                         IDirect3DDevice9_SetRenderState(vid_d3d9dev, D3DRS_BLENDOP, D3DBLENDOP_ADD);
2733 #endif
2734                         break;
2735                 case RENDERPATH_D3D10:
2736                         Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
2737                         break;
2738                 case RENDERPATH_D3D11:
2739                         Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
2740                         break;
2741                 }
2742         }
2743 }
2744
2745 void R_RTLight_Update(rtlight_t *rtlight, int isstatic, matrix4x4_t *matrix, vec3_t color, int style, const char *cubemapname, int shadow, vec_t corona, vec_t coronasizescale, vec_t ambientscale, vec_t diffusescale, vec_t specularscale, int flags)
2746 {
2747         matrix4x4_t tempmatrix = *matrix;
2748         Matrix4x4_Scale(&tempmatrix, r_shadow_lightradiusscale.value, 1);
2749
2750         // if this light has been compiled before, free the associated data
2751         R_RTLight_Uncompile(rtlight);
2752
2753         // clear it completely to avoid any lingering data
2754         memset(rtlight, 0, sizeof(*rtlight));
2755
2756         // copy the properties
2757         rtlight->matrix_lighttoworld = tempmatrix;
2758         Matrix4x4_Invert_Simple(&rtlight->matrix_worldtolight, &tempmatrix);
2759         Matrix4x4_OriginFromMatrix(&tempmatrix, rtlight->shadoworigin);
2760         rtlight->radius = Matrix4x4_ScaleFromMatrix(&tempmatrix);
2761         VectorCopy(color, rtlight->color);
2762         rtlight->cubemapname[0] = 0;
2763         if (cubemapname && cubemapname[0])
2764                 strlcpy(rtlight->cubemapname, cubemapname, sizeof(rtlight->cubemapname));
2765         rtlight->shadow = shadow;
2766         rtlight->corona = corona;
2767         rtlight->style = style;
2768         rtlight->isstatic = isstatic;
2769         rtlight->coronasizescale = coronasizescale;
2770         rtlight->ambientscale = ambientscale;
2771         rtlight->diffusescale = diffusescale;
2772         rtlight->specularscale = specularscale;
2773         rtlight->flags = flags;
2774
2775         // compute derived data
2776         //rtlight->cullradius = rtlight->radius;
2777         //rtlight->cullradius2 = rtlight->radius * rtlight->radius;
2778         rtlight->cullmins[0] = rtlight->shadoworigin[0] - rtlight->radius;
2779         rtlight->cullmins[1] = rtlight->shadoworigin[1] - rtlight->radius;
2780         rtlight->cullmins[2] = rtlight->shadoworigin[2] - rtlight->radius;
2781         rtlight->cullmaxs[0] = rtlight->shadoworigin[0] + rtlight->radius;
2782         rtlight->cullmaxs[1] = rtlight->shadoworigin[1] + rtlight->radius;
2783         rtlight->cullmaxs[2] = rtlight->shadoworigin[2] + rtlight->radius;
2784 }
2785
2786 // compiles rtlight geometry
2787 // (undone by R_FreeCompiledRTLight, which R_UpdateLight calls)
2788 void R_RTLight_Compile(rtlight_t *rtlight)
2789 {
2790         int i;
2791         int numsurfaces, numleafs, numleafpvsbytes, numshadowtrispvsbytes, numlighttrispvsbytes;
2792         int lighttris, shadowtris, shadowzpasstris, shadowzfailtris;
2793         entity_render_t *ent = r_refdef.scene.worldentity;
2794         dp_model_t *model = r_refdef.scene.worldmodel;
2795         unsigned char *data;
2796         shadowmesh_t *mesh;
2797
2798         // compile the light
2799         rtlight->compiled = true;
2800         rtlight->shadowmode = rtlight->shadow ? (int)r_shadow_shadowmode : -1;
2801         rtlight->static_numleafs = 0;
2802         rtlight->static_numleafpvsbytes = 0;
2803         rtlight->static_leaflist = NULL;
2804         rtlight->static_leafpvs = NULL;
2805         rtlight->static_numsurfaces = 0;
2806         rtlight->static_surfacelist = NULL;
2807         rtlight->static_shadowmap_receivers = 0x3F;
2808         rtlight->static_shadowmap_casters = 0x3F;
2809         rtlight->cullmins[0] = rtlight->shadoworigin[0] - rtlight->radius;
2810         rtlight->cullmins[1] = rtlight->shadoworigin[1] - rtlight->radius;
2811         rtlight->cullmins[2] = rtlight->shadoworigin[2] - rtlight->radius;
2812         rtlight->cullmaxs[0] = rtlight->shadoworigin[0] + rtlight->radius;
2813         rtlight->cullmaxs[1] = rtlight->shadoworigin[1] + rtlight->radius;
2814         rtlight->cullmaxs[2] = rtlight->shadoworigin[2] + rtlight->radius;
2815
2816         if (model && model->GetLightInfo)
2817         {
2818                 // this variable must be set for the CompileShadowVolume/CompileShadowMap code
2819                 r_shadow_compilingrtlight = rtlight;
2820                 model->GetLightInfo(ent, rtlight->shadoworigin, rtlight->radius, rtlight->cullmins, rtlight->cullmaxs, r_shadow_buffer_leaflist, r_shadow_buffer_leafpvs, &numleafs, r_shadow_buffer_surfacelist, r_shadow_buffer_surfacepvs, &numsurfaces, r_shadow_buffer_shadowtrispvs, r_shadow_buffer_lighttrispvs, r_shadow_buffer_visitingleafpvs, 0, NULL);
2821                 numleafpvsbytes = (model->brush.num_leafs + 7) >> 3;
2822                 numshadowtrispvsbytes = ((model->brush.shadowmesh ? model->brush.shadowmesh->numtriangles : model->surfmesh.num_triangles) + 7) >> 3;
2823                 numlighttrispvsbytes = (model->surfmesh.num_triangles + 7) >> 3;
2824                 data = (unsigned char *)Mem_Alloc(r_main_mempool, sizeof(int) * numsurfaces + sizeof(int) * numleafs + numleafpvsbytes + numshadowtrispvsbytes + numlighttrispvsbytes);
2825                 rtlight->static_numsurfaces = numsurfaces;
2826                 rtlight->static_surfacelist = (int *)data;data += sizeof(int) * numsurfaces;
2827                 rtlight->static_numleafs = numleafs;
2828                 rtlight->static_leaflist = (int *)data;data += sizeof(int) * numleafs;
2829                 rtlight->static_numleafpvsbytes = numleafpvsbytes;
2830                 rtlight->static_leafpvs = (unsigned char *)data;data += numleafpvsbytes;
2831                 rtlight->static_numshadowtrispvsbytes = numshadowtrispvsbytes;
2832                 rtlight->static_shadowtrispvs = (unsigned char *)data;data += numshadowtrispvsbytes;
2833                 rtlight->static_numlighttrispvsbytes = numlighttrispvsbytes;
2834                 rtlight->static_lighttrispvs = (unsigned char *)data;data += numlighttrispvsbytes;
2835                 if (rtlight->static_numsurfaces)
2836                         memcpy(rtlight->static_surfacelist, r_shadow_buffer_surfacelist, rtlight->static_numsurfaces * sizeof(*rtlight->static_surfacelist));
2837                 if (rtlight->static_numleafs)
2838                         memcpy(rtlight->static_leaflist, r_shadow_buffer_leaflist, rtlight->static_numleafs * sizeof(*rtlight->static_leaflist));
2839                 if (rtlight->static_numleafpvsbytes)
2840                         memcpy(rtlight->static_leafpvs, r_shadow_buffer_leafpvs, rtlight->static_numleafpvsbytes);
2841                 if (rtlight->static_numshadowtrispvsbytes)
2842                         memcpy(rtlight->static_shadowtrispvs, r_shadow_buffer_shadowtrispvs, rtlight->static_numshadowtrispvsbytes);
2843                 if (rtlight->static_numlighttrispvsbytes)
2844                         memcpy(rtlight->static_lighttrispvs, r_shadow_buffer_lighttrispvs, rtlight->static_numlighttrispvsbytes);
2845                 switch (rtlight->shadowmode)
2846                 {
2847                 case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
2848                         if (model->CompileShadowMap && rtlight->shadow)
2849                                 model->CompileShadowMap(ent, rtlight->shadoworigin, NULL, rtlight->radius, numsurfaces, r_shadow_buffer_surfacelist);
2850                         break;
2851                 default:
2852                         if (model->CompileShadowVolume && rtlight->shadow)
2853                                 model->CompileShadowVolume(ent, rtlight->shadoworigin, NULL, rtlight->radius, numsurfaces, r_shadow_buffer_surfacelist);
2854                         break;
2855                 }
2856                 // now we're done compiling the rtlight
2857                 r_shadow_compilingrtlight = NULL;
2858         }
2859
2860
2861         // use smallest available cullradius - box radius or light radius
2862         //rtlight->cullradius = RadiusFromBoundsAndOrigin(rtlight->cullmins, rtlight->cullmaxs, rtlight->shadoworigin);
2863         //rtlight->cullradius = min(rtlight->cullradius, rtlight->radius);
2864
2865         shadowzpasstris = 0;
2866         if (rtlight->static_meshchain_shadow_zpass)
2867                 for (mesh = rtlight->static_meshchain_shadow_zpass;mesh;mesh = mesh->next)
2868                         shadowzpasstris += mesh->numtriangles;
2869
2870         shadowzfailtris = 0;
2871         if (rtlight->static_meshchain_shadow_zfail)
2872                 for (mesh = rtlight->static_meshchain_shadow_zfail;mesh;mesh = mesh->next)
2873                         shadowzfailtris += mesh->numtriangles;
2874
2875         lighttris = 0;
2876         if (rtlight->static_numlighttrispvsbytes)
2877                 for (i = 0;i < rtlight->static_numlighttrispvsbytes*8;i++)
2878                         if (CHECKPVSBIT(rtlight->static_lighttrispvs, i))
2879                                 lighttris++;
2880
2881         shadowtris = 0;
2882         if (rtlight->static_numlighttrispvsbytes)
2883                 for (i = 0;i < rtlight->static_numshadowtrispvsbytes*8;i++)
2884                         if (CHECKPVSBIT(rtlight->static_shadowtrispvs, i))
2885                                 shadowtris++;
2886
2887         if (developer_extra.integer)
2888                 Con_DPrintf("static light built: %f %f %f : %f %f %f box, %i light triangles, %i shadow triangles, %i zpass/%i zfail compiled shadow volume triangles\n", rtlight->cullmins[0], rtlight->cullmins[1], rtlight->cullmins[2], rtlight->cullmaxs[0], rtlight->cullmaxs[1], rtlight->cullmaxs[2], lighttris, shadowtris, shadowzpasstris, shadowzfailtris);
2889 }
2890
2891 void R_RTLight_Uncompile(rtlight_t *rtlight)
2892 {
2893         if (rtlight->compiled)
2894         {
2895                 if (rtlight->static_meshchain_shadow_zpass)
2896                         Mod_ShadowMesh_Free(rtlight->static_meshchain_shadow_zpass);
2897                 rtlight->static_meshchain_shadow_zpass = NULL;
2898                 if (rtlight->static_meshchain_shadow_zfail)
2899                         Mod_ShadowMesh_Free(rtlight->static_meshchain_shadow_zfail);
2900                 rtlight->static_meshchain_shadow_zfail = NULL;
2901                 if (rtlight->static_meshchain_shadow_shadowmap)
2902                         Mod_ShadowMesh_Free(rtlight->static_meshchain_shadow_shadowmap);
2903                 rtlight->static_meshchain_shadow_shadowmap = NULL;
2904                 // these allocations are grouped
2905                 if (rtlight->static_surfacelist)
2906                         Mem_Free(rtlight->static_surfacelist);
2907                 rtlight->static_numleafs = 0;
2908                 rtlight->static_numleafpvsbytes = 0;
2909                 rtlight->static_leaflist = NULL;
2910                 rtlight->static_leafpvs = NULL;
2911                 rtlight->static_numsurfaces = 0;
2912                 rtlight->static_surfacelist = NULL;
2913                 rtlight->static_numshadowtrispvsbytes = 0;
2914                 rtlight->static_shadowtrispvs = NULL;
2915                 rtlight->static_numlighttrispvsbytes = 0;
2916                 rtlight->static_lighttrispvs = NULL;
2917                 rtlight->compiled = false;
2918         }
2919 }
2920
2921 void R_Shadow_UncompileWorldLights(void)
2922 {
2923         size_t lightindex;
2924         dlight_t *light;
2925         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
2926         for (lightindex = 0;lightindex < range;lightindex++)
2927         {
2928                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
2929                 if (!light)
2930                         continue;
2931                 R_RTLight_Uncompile(&light->rtlight);
2932         }
2933 }
2934
2935 void R_Shadow_ComputeShadowCasterCullingPlanes(rtlight_t *rtlight)
2936 {
2937         int i, j;
2938         mplane_t plane;
2939         // reset the count of frustum planes
2940         // see rtlight->cached_frustumplanes definition for how much this array
2941         // can hold
2942         rtlight->cached_numfrustumplanes = 0;
2943
2944         // haven't implemented a culling path for ortho rendering
2945         if (!r_refdef.view.useperspective)
2946         {
2947                 // check if the light is on screen and copy the 4 planes if it is
2948                 for (i = 0;i < 4;i++)
2949                         if (PlaneDiff(rtlight->shadoworigin, &r_refdef.view.frustum[i]) < -0.03125)
2950                                 break;
2951                 if (i == 4)
2952                         for (i = 0;i < 4;i++)
2953                                 rtlight->cached_frustumplanes[rtlight->cached_numfrustumplanes++] = r_refdef.view.frustum[i];
2954                 return;
2955         }
2956
2957 #if 1
2958         // generate a deformed frustum that includes the light origin, this is
2959         // used to cull shadow casting surfaces that can not possibly cast a
2960         // shadow onto the visible light-receiving surfaces, which can be a
2961         // performance gain
2962         //
2963         // if the light origin is onscreen the result will be 4 planes exactly
2964         // if the light origin is offscreen on only one axis the result will
2965         // be exactly 5 planes (split-side case)
2966         // if the light origin is offscreen on two axes the result will be
2967         // exactly 4 planes (stretched corner case)
2968         for (i = 0;i < 4;i++)
2969         {
2970                 // quickly reject standard frustum planes that put the light
2971                 // origin outside the frustum
2972                 if (PlaneDiff(rtlight->shadoworigin, &r_refdef.view.frustum[i]) < -0.03125)
2973                         continue;
2974                 // copy the plane
2975                 rtlight->cached_frustumplanes[rtlight->cached_numfrustumplanes++] = r_refdef.view.frustum[i];
2976         }
2977         // if all the standard frustum planes were accepted, the light is onscreen
2978         // otherwise we need to generate some more planes below...
2979         if (rtlight->cached_numfrustumplanes < 4)
2980         {
2981                 // at least one of the stock frustum planes failed, so we need to
2982                 // create one or two custom planes to enclose the light origin
2983                 for (i = 0;i < 4;i++)
2984                 {
2985                         // create a plane using the view origin and light origin, and a
2986                         // single point from the frustum corner set
2987                         TriangleNormal(r_refdef.view.origin, r_refdef.view.frustumcorner[i], rtlight->shadoworigin, plane.normal);
2988                         VectorNormalize(plane.normal);
2989                         plane.dist = DotProduct(r_refdef.view.origin, plane.normal);
2990                         // see if this plane is backwards and flip it if so
2991                         for (j = 0;j < 4;j++)
2992                                 if (j != i && DotProduct(r_refdef.view.frustumcorner[j], plane.normal) - plane.dist < -0.03125)
2993                                         break;
2994                         if (j < 4)
2995                         {
2996                                 VectorNegate(plane.normal, plane.normal);
2997                                 plane.dist *= -1;
2998                                 // flipped plane, test again to see if it is now valid
2999                                 for (j = 0;j < 4;j++)
3000                                         if (j != i && DotProduct(r_refdef.view.frustumcorner[j], plane.normal) - plane.dist < -0.03125)
3001                                                 break;
3002                                 // if the plane is still not valid, then it is dividing the
3003                                 // frustum and has to be rejected
3004                                 if (j < 4)
3005                                         continue;
3006                         }
3007                         // we have created a valid plane, compute extra info
3008                         PlaneClassify(&plane);
3009                         // copy the plane
3010                         rtlight->cached_frustumplanes[rtlight->cached_numfrustumplanes++] = plane;
3011 #if 1
3012                         // if we've found 5 frustum planes then we have constructed a
3013                         // proper split-side case and do not need to keep searching for
3014                         // planes to enclose the light origin
3015                         if (rtlight->cached_numfrustumplanes == 5)
3016                                 break;
3017 #endif
3018                 }
3019         }
3020 #endif
3021
3022 #if 0
3023         for (i = 0;i < rtlight->cached_numfrustumplanes;i++)
3024         {
3025                 plane = rtlight->cached_frustumplanes[i];
3026                 Con_Printf("light %p plane #%i %f %f %f : %f (%f %f %f %f %f)\n", rtlight, i, plane.normal[0], plane.normal[1], plane.normal[2], plane.dist, PlaneDiff(r_refdef.view.frustumcorner[0], &plane), PlaneDiff(r_refdef.view.frustumcorner[1], &plane), PlaneDiff(r_refdef.view.frustumcorner[2], &plane), PlaneDiff(r_refdef.view.frustumcorner[3], &plane), PlaneDiff(rtlight->shadoworigin, &plane));
3027         }
3028 #endif
3029
3030 #if 0
3031         // now add the light-space box planes if the light box is rotated, as any
3032         // caster outside the oriented light box is irrelevant (even if it passed
3033         // the worldspace light box, which is axial)
3034         if (rtlight->matrix_lighttoworld.m[0][0] != 1 || rtlight->matrix_lighttoworld.m[1][1] != 1 || rtlight->matrix_lighttoworld.m[2][2] != 1)
3035         {
3036                 for (i = 0;i < 6;i++)
3037                 {
3038                         vec3_t v;
3039                         VectorClear(v);
3040                         v[i >> 1] = (i & 1) ? -1 : 1;
3041                         Matrix4x4_Transform(&rtlight->matrix_lighttoworld, v, plane.normal);
3042                         VectorSubtract(plane.normal, rtlight->shadoworigin, plane.normal);
3043                         plane.dist = VectorNormalizeLength(plane.normal);
3044                         plane.dist += DotProduct(plane.normal, rtlight->shadoworigin);
3045                         rtlight->cached_frustumplanes[rtlight->cached_numfrustumplanes++] = plane;
3046                 }
3047         }
3048 #endif
3049
3050 #if 0
3051         // add the world-space reduced box planes
3052         for (i = 0;i < 6;i++)
3053         {
3054                 VectorClear(plane.normal);
3055                 plane.normal[i >> 1] = (i & 1) ? -1 : 1;
3056                 plane.dist = (i & 1) ? -rtlight->cached_cullmaxs[i >> 1] : rtlight->cached_cullmins[i >> 1];
3057                 rtlight->cached_frustumplanes[rtlight->cached_numfrustumplanes++] = plane;
3058         }
3059 #endif
3060
3061 #if 0
3062         {
3063         int j, oldnum;
3064         vec3_t points[8];
3065         vec_t bestdist;
3066         // reduce all plane distances to tightly fit the rtlight cull box, which
3067         // is in worldspace
3068         VectorSet(points[0], rtlight->cached_cullmins[0], rtlight->cached_cullmins[1], rtlight->cached_cullmins[2]);
3069         VectorSet(points[1], rtlight->cached_cullmaxs[0], rtlight->cached_cullmins[1], rtlight->cached_cullmins[2]);
3070         VectorSet(points[2], rtlight->cached_cullmins[0], rtlight->cached_cullmaxs[1], rtlight->cached_cullmins[2]);
3071         VectorSet(points[3], rtlight->cached_cullmaxs[0], rtlight->cached_cullmaxs[1], rtlight->cached_cullmins[2]);
3072         VectorSet(points[4], rtlight->cached_cullmins[0], rtlight->cached_cullmins[1], rtlight->cached_cullmaxs[2]);
3073         VectorSet(points[5], rtlight->cached_cullmaxs[0], rtlight->cached_cullmins[1], rtlight->cached_cullmaxs[2]);
3074         VectorSet(points[6], rtlight->cached_cullmins[0], rtlight->cached_cullmaxs[1], rtlight->cached_cullmaxs[2]);
3075         VectorSet(points[7], rtlight->cached_cullmaxs[0], rtlight->cached_cullmaxs[1], rtlight->cached_cullmaxs[2]);
3076         oldnum = rtlight->cached_numfrustumplanes;
3077         rtlight->cached_numfrustumplanes = 0;
3078         for (j = 0;j < oldnum;j++)
3079         {
3080                 // find the nearest point on the box to this plane
3081                 bestdist = DotProduct(rtlight->cached_frustumplanes[j].normal, points[0]);
3082                 for (i = 1;i < 8;i++)
3083                 {
3084                         dist = DotProduct(rtlight->cached_frustumplanes[j].normal, points[i]);
3085                         if (bestdist > dist)
3086                                 bestdist = dist;
3087                 }
3088                 Con_Printf("light %p %splane #%i %f %f %f : %f < %f\n", rtlight, rtlight->cached_frustumplanes[j].dist < bestdist + 0.03125 ? "^2" : "^1", j, rtlight->cached_frustumplanes[j].normal[0], rtlight->cached_frustumplanes[j].normal[1], rtlight->cached_frustumplanes[j].normal[2], rtlight->cached_frustumplanes[j].dist, bestdist);
3089                 // if the nearest point is near or behind the plane, we want this
3090                 // plane, otherwise the plane is useless as it won't cull anything
3091                 if (rtlight->cached_frustumplanes[j].dist < bestdist + 0.03125)
3092                 {
3093                         PlaneClassify(&rtlight->cached_frustumplanes[j]);
3094                         rtlight->cached_frustumplanes[rtlight->cached_numfrustumplanes++] = rtlight->cached_frustumplanes[j];
3095                 }
3096         }
3097         }
3098 #endif
3099 }
3100
3101 void R_Shadow_DrawWorldShadow_ShadowMap(int numsurfaces, int *surfacelist, const unsigned char *trispvs, const unsigned char *surfacesides)
3102 {
3103         shadowmesh_t *mesh;
3104
3105         RSurf_ActiveWorldEntity();
3106
3107         if (rsurface.rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
3108         {
3109                 CHECKGLERROR
3110                 GL_CullFace(GL_NONE);
3111         mesh = rsurface.rtlight->static_meshchain_shadow_shadowmap;
3112         for (;mesh;mesh = mesh->next)
3113         {
3114                         if (!mesh->sidetotals[r_shadow_shadowmapside])
3115                                 continue;
3116             r_refdef.stats.lights_shadowtriangles += mesh->sidetotals[r_shadow_shadowmapside];
3117             R_Mesh_PrepareVertices_Position(mesh->numverts, mesh->vertexposition, mesh->vertexpositionbuffer);
3118             R_Mesh_Draw(0, mesh->numverts, mesh->sideoffsets[r_shadow_shadowmapside], mesh->sidetotals[r_shadow_shadowmapside], mesh->element3i, mesh->element3i_indexbuffer, mesh->element3i_bufferoffset, mesh->element3s, mesh->element3s_indexbuffer, mesh->element3s_bufferoffset);
3119         }
3120         CHECKGLERROR
3121     }
3122         else if (r_refdef.scene.worldentity->model)
3123                 r_refdef.scene.worldmodel->DrawShadowMap(r_shadow_shadowmapside, r_refdef.scene.worldentity, rsurface.rtlight->shadoworigin, NULL, rsurface.rtlight->radius, numsurfaces, surfacelist, surfacesides, rsurface.rtlight->cached_cullmins, rsurface.rtlight->cached_cullmaxs);
3124
3125         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3126 }
3127
3128 void R_Shadow_DrawWorldShadow_ShadowVolume(int numsurfaces, int *surfacelist, const unsigned char *trispvs)
3129 {
3130         qboolean zpass = false;
3131         shadowmesh_t *mesh;
3132         int t, tend;
3133         int surfacelistindex;
3134         msurface_t *surface;
3135
3136         RSurf_ActiveWorldEntity();
3137
3138         if (rsurface.rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
3139         {
3140                 CHECKGLERROR
3141                 if (r_shadow_rendermode != R_SHADOW_RENDERMODE_VISIBLEVOLUMES)
3142                 {
3143                         zpass = R_Shadow_UseZPass(r_refdef.scene.worldmodel->normalmins, r_refdef.scene.worldmodel->normalmaxs);
3144                         R_Shadow_RenderMode_StencilShadowVolumes(zpass);
3145                 }
3146                 mesh = zpass ? rsurface.rtlight->static_meshchain_shadow_zpass : rsurface.rtlight->static_meshchain_shadow_zfail;
3147                 for (;mesh;mesh = mesh->next)
3148                 {
3149                         r_refdef.stats.lights_shadowtriangles += mesh->numtriangles;
3150                         R_Mesh_PrepareVertices_Position(mesh->numverts, mesh->vertexposition, mesh->vertexpositionbuffer);
3151                         if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZPASS_STENCIL)
3152                         {
3153                                 // increment stencil if frontface is infront of depthbuffer
3154                                 GL_CullFace(r_refdef.view.cullface_back);
3155                                 R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_INCR, GL_ALWAYS, 128, 255);
3156                                 R_Mesh_Draw(0, mesh->numverts, 0, mesh->numtriangles, mesh->element3i, mesh->element3i_indexbuffer, mesh->element3i_bufferoffset, mesh->element3s, mesh->element3s_indexbuffer, mesh->element3s_bufferoffset);
3157                                 // decrement stencil if backface is infront of depthbuffer
3158                                 GL_CullFace(r_refdef.view.cullface_front);
3159                                 R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_DECR, GL_ALWAYS, 128, 255);
3160                         }
3161                         else if (r_shadow_rendermode == R_SHADOW_RENDERMODE_ZFAIL_STENCIL)
3162                         {
3163                                 // decrement stencil if backface is behind depthbuffer
3164                                 GL_CullFace(r_refdef.view.cullface_front);
3165                                 R_SetStencil(true, 255, GL_KEEP, GL_DECR, GL_KEEP, GL_ALWAYS, 128, 255);
3166                                 R_Mesh_Draw(0, mesh->numverts, 0, mesh->numtriangles, mesh->element3i, mesh->element3i_indexbuffer, mesh->element3i_bufferoffset, mesh->element3s, mesh->element3s_indexbuffer, mesh->element3s_bufferoffset);
3167                                 // increment stencil if frontface is behind depthbuffer
3168                                 GL_CullFace(r_refdef.view.cullface_back);
3169                                 R_SetStencil(true, 255, GL_KEEP, GL_INCR, GL_KEEP, GL_ALWAYS, 128, 255);
3170                         }
3171                         R_Mesh_Draw(0, mesh->numverts, 0, mesh->numtriangles, mesh->element3i, mesh->element3i_indexbuffer, mesh->element3i_bufferoffset, mesh->element3s, mesh->element3s_indexbuffer, mesh->element3s_bufferoffset);
3172                 }
3173                 CHECKGLERROR
3174         }
3175         else if (numsurfaces && r_refdef.scene.worldmodel->brush.shadowmesh)
3176         {
3177                 // use the shadow trispvs calculated earlier by GetLightInfo to cull world triangles on this dynamic light
3178                 R_Shadow_PrepareShadowMark(r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles);
3179                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
3180                 {
3181                         surface = r_refdef.scene.worldmodel->data_surfaces + surfacelist[surfacelistindex];
3182                         for (t = surface->num_firstshadowmeshtriangle, tend = t + surface->num_triangles;t < tend;t++)
3183                                 if (CHECKPVSBIT(trispvs, t))
3184                                         shadowmarklist[numshadowmark++] = t;
3185                 }
3186                 R_Shadow_VolumeFromList(r_refdef.scene.worldmodel->brush.shadowmesh->numverts, r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles, r_refdef.scene.worldmodel->brush.shadowmesh->vertex3f, r_refdef.scene.worldmodel->brush.shadowmesh->element3i, r_refdef.scene.worldmodel->brush.shadowmesh->neighbor3i, rsurface.rtlight->shadoworigin, NULL, rsurface.rtlight->radius + r_refdef.scene.worldmodel->radius*2 + r_shadow_projectdistance.value, numshadowmark, shadowmarklist, r_refdef.scene.worldmodel->normalmins, r_refdef.scene.worldmodel->normalmaxs);
3187         }
3188         else if (numsurfaces)
3189                 r_refdef.scene.worldmodel->DrawShadowVolume(r_refdef.scene.worldentity, rsurface.rtlight->shadoworigin, NULL, rsurface.rtlight->radius, numsurfaces, surfacelist, rsurface.rtlight->cached_cullmins, rsurface.rtlight->cached_cullmaxs);
3190
3191         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3192 }
3193
3194 void R_Shadow_DrawEntityShadow(entity_render_t *ent)
3195 {
3196         vec3_t relativeshadoworigin, relativeshadowmins, relativeshadowmaxs;
3197         vec_t relativeshadowradius;
3198         RSurf_ActiveModelEntity(ent, false, false, false);
3199         Matrix4x4_Transform(&ent->inversematrix, rsurface.rtlight->shadoworigin, relativeshadoworigin);
3200         // we need to re-init the shader for each entity because the matrix changed
3201         relativeshadowradius = rsurface.rtlight->radius / ent->scale;
3202         relativeshadowmins[0] = relativeshadoworigin[0] - relativeshadowradius;
3203         relativeshadowmins[1] = relativeshadoworigin[1] - relativeshadowradius;
3204         relativeshadowmins[2] = relativeshadoworigin[2] - relativeshadowradius;
3205         relativeshadowmaxs[0] = relativeshadoworigin[0] + relativeshadowradius;
3206         relativeshadowmaxs[1] = relativeshadoworigin[1] + relativeshadowradius;
3207         relativeshadowmaxs[2] = relativeshadoworigin[2] + relativeshadowradius;
3208         switch (r_shadow_rendermode)
3209         {
3210         case R_SHADOW_RENDERMODE_SHADOWMAP2D:
3211                 ent->model->DrawShadowMap(r_shadow_shadowmapside, ent, relativeshadoworigin, NULL, relativeshadowradius, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, NULL, relativeshadowmins, relativeshadowmaxs);
3212                 break;
3213         default:
3214                 ent->model->DrawShadowVolume(ent, relativeshadoworigin, NULL, relativeshadowradius, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, relativeshadowmins, relativeshadowmaxs);
3215                 break;
3216         }
3217         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3218 }
3219
3220 void R_Shadow_SetupEntityLight(const entity_render_t *ent)
3221 {
3222         // set up properties for rendering light onto this entity
3223         RSurf_ActiveModelEntity(ent, true, true, false);
3224         GL_AlphaTest(false);
3225         Matrix4x4_Concat(&rsurface.entitytolight, &rsurface.rtlight->matrix_worldtolight, &ent->matrix);
3226         Matrix4x4_Concat(&rsurface.entitytoattenuationxyz, &matrix_attenuationxyz, &rsurface.entitytolight);
3227         Matrix4x4_Concat(&rsurface.entitytoattenuationz, &matrix_attenuationz, &rsurface.entitytolight);
3228         Matrix4x4_Transform(&ent->inversematrix, rsurface.rtlight->shadoworigin, rsurface.entitylightorigin);
3229 }
3230
3231 void R_Shadow_DrawWorldLight(int numsurfaces, int *surfacelist, const unsigned char *lighttrispvs)
3232 {
3233         if (!r_refdef.scene.worldmodel->DrawLight)
3234                 return;
3235
3236         // set up properties for rendering light onto this entity
3237         RSurf_ActiveWorldEntity();
3238         GL_AlphaTest(false);
3239         rsurface.entitytolight = rsurface.rtlight->matrix_worldtolight;
3240         Matrix4x4_Concat(&rsurface.entitytoattenuationxyz, &matrix_attenuationxyz, &rsurface.entitytolight);
3241         Matrix4x4_Concat(&rsurface.entitytoattenuationz, &matrix_attenuationz, &rsurface.entitytolight);
3242         VectorCopy(rsurface.rtlight->shadoworigin, rsurface.entitylightorigin);
3243
3244         r_refdef.scene.worldmodel->DrawLight(r_refdef.scene.worldentity, numsurfaces, surfacelist, lighttrispvs);
3245
3246         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3247 }
3248
3249 void R_Shadow_DrawEntityLight(entity_render_t *ent)
3250 {
3251         dp_model_t *model = ent->model;
3252         if (!model->DrawLight)
3253                 return;
3254
3255         R_Shadow_SetupEntityLight(ent);
3256
3257         model->DrawLight(ent, model->nummodelsurfaces, model->sortedmodelsurfaces, NULL);
3258
3259         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
3260 }
3261
3262 void R_Shadow_PrepareLight(rtlight_t *rtlight)
3263 {
3264         int i;
3265         float f;
3266         int numleafs, numsurfaces;
3267         int *leaflist, *surfacelist;
3268         unsigned char *leafpvs;
3269         unsigned char *shadowtrispvs;
3270         unsigned char *lighttrispvs;
3271         //unsigned char *surfacesides;
3272         int numlightentities;
3273         int numlightentities_noselfshadow;
3274         int numshadowentities;
3275         int numshadowentities_noselfshadow;
3276         static entity_render_t *lightentities[MAX_EDICTS];
3277         static entity_render_t *lightentities_noselfshadow[MAX_EDICTS];
3278         static entity_render_t *shadowentities[MAX_EDICTS];
3279         static entity_render_t *shadowentities_noselfshadow[MAX_EDICTS];
3280         qboolean nolight;
3281
3282         rtlight->draw = false;
3283
3284         // skip lights that don't light because of ambientscale+diffusescale+specularscale being 0 (corona only lights)
3285         // skip lights that are basically invisible (color 0 0 0)
3286         nolight = VectorLength2(rtlight->color) * (rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale) < (1.0f / 1048576.0f);
3287
3288         // loading is done before visibility checks because loading should happen
3289         // all at once at the start of a level, not when it stalls gameplay.
3290         // (especially important to benchmarks)
3291         // compile light
3292         if (rtlight->isstatic && !nolight && (!rtlight->compiled || (rtlight->shadow && rtlight->shadowmode != (int)r_shadow_shadowmode)) && r_shadow_realtime_world_compile.integer)
3293         {
3294                 if (rtlight->compiled)
3295                         R_RTLight_Uncompile(rtlight);
3296                 R_RTLight_Compile(rtlight);
3297         }
3298
3299         // load cubemap
3300         rtlight->currentcubemap = rtlight->cubemapname[0] ? R_GetCubemap(rtlight->cubemapname) : r_texture_whitecube;
3301
3302         // look up the light style value at this time
3303         f = (rtlight->style >= 0 ? r_refdef.scene.rtlightstylevalue[rtlight->style] : 1) * r_shadow_lightintensityscale.value;
3304         VectorScale(rtlight->color, f, rtlight->currentcolor);
3305         /*
3306         if (rtlight->selected)
3307         {
3308                 f = 2 + sin(realtime * M_PI * 4.0);
3309                 VectorScale(rtlight->currentcolor, f, rtlight->currentcolor);
3310         }
3311         */
3312
3313         // if lightstyle is currently off, don't draw the light
3314         if (VectorLength2(rtlight->currentcolor) < (1.0f / 1048576.0f))
3315                 return;
3316
3317         // skip processing on corona-only lights
3318         if (nolight)
3319                 return;
3320
3321         // if the light box is offscreen, skip it
3322         if (R_CullBox(rtlight->cullmins, rtlight->cullmaxs))
3323                 return;
3324
3325         VectorCopy(rtlight->cullmins, rtlight->cached_cullmins);
3326         VectorCopy(rtlight->cullmaxs, rtlight->cached_cullmaxs);
3327
3328         R_Shadow_ComputeShadowCasterCullingPlanes(rtlight);
3329
3330         if (rtlight->compiled && r_shadow_realtime_world_compile.integer)
3331         {
3332                 // compiled light, world available and can receive realtime lighting
3333                 // retrieve leaf information
3334                 numleafs = rtlight->static_numleafs;
3335                 leaflist = rtlight->static_leaflist;
3336                 leafpvs = rtlight->static_leafpvs;
3337                 numsurfaces = rtlight->static_numsurfaces;
3338                 surfacelist = rtlight->static_surfacelist;
3339                 //surfacesides = NULL;
3340                 shadowtrispvs = rtlight->static_shadowtrispvs;
3341                 lighttrispvs = rtlight->static_lighttrispvs;
3342         }
3343         else if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->GetLightInfo)
3344         {
3345                 // dynamic light, world available and can receive realtime lighting
3346                 // calculate lit surfaces and leafs
3347                 r_refdef.scene.worldmodel->GetLightInfo(r_refdef.scene.worldentity, rtlight->shadoworigin, rtlight->radius, rtlight->cached_cullmins, rtlight->cached_cullmaxs, r_shadow_buffer_leaflist, r_shadow_buffer_leafpvs, &numleafs, r_shadow_buffer_surfacelist, r_shadow_buffer_surfacepvs, &numsurfaces, r_shadow_buffer_shadowtrispvs, r_shadow_buffer_lighttrispvs, r_shadow_buffer_visitingleafpvs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes);
3348                 R_Shadow_ComputeShadowCasterCullingPlanes(rtlight);
3349                 leaflist = r_shadow_buffer_leaflist;
3350                 leafpvs = r_shadow_buffer_leafpvs;
3351                 surfacelist = r_shadow_buffer_surfacelist;
3352                 //surfacesides = r_shadow_buffer_surfacesides;
3353                 shadowtrispvs = r_shadow_buffer_shadowtrispvs;
3354                 lighttrispvs = r_shadow_buffer_lighttrispvs;
3355                 // if the reduced leaf bounds are offscreen, skip it
3356                 if (R_CullBox(rtlight->cached_cullmins, rtlight->cached_cullmaxs))
3357                         return;
3358         }
3359         else
3360         {
3361                 // no world
3362                 numleafs = 0;
3363                 leaflist = NULL;
3364                 leafpvs = NULL;
3365                 numsurfaces = 0;
3366                 surfacelist = NULL;
3367                 //surfacesides = NULL;
3368                 shadowtrispvs = NULL;
3369                 lighttrispvs = NULL;
3370         }
3371         // check if light is illuminating any visible leafs
3372         if (numleafs)
3373         {
3374                 for (i = 0;i < numleafs;i++)
3375                         if (r_refdef.viewcache.world_leafvisible[leaflist[i]])
3376                                 break;
3377                 if (i == numleafs)
3378                         return;
3379         }
3380
3381         // make a list of lit entities and shadow casting entities
3382         numlightentities = 0;
3383         numlightentities_noselfshadow = 0;
3384         numshadowentities = 0;
3385         numshadowentities_noselfshadow = 0;
3386
3387         // add dynamic entities that are lit by the light
3388         for (i = 0;i < r_refdef.scene.numentities;i++)
3389         {
3390                 dp_model_t *model;
3391                 entity_render_t *ent = r_refdef.scene.entities[i];
3392                 vec3_t org;
3393                 if (!BoxesOverlap(ent->mins, ent->maxs, rtlight->cached_cullmins, rtlight->cached_cullmaxs))
3394                         continue;
3395                 // skip the object entirely if it is not within the valid
3396                 // shadow-casting region (which includes the lit region)
3397                 if (R_CullBoxCustomPlanes(ent->mins, ent->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
3398                         continue;
3399                 if (!(model = ent->model))
3400                         continue;
3401                 if (r_refdef.viewcache.entityvisible[i] && model->DrawLight && (ent->flags & RENDER_LIGHT))
3402                 {
3403                         // this entity wants to receive light, is visible, and is
3404                         // inside the light box
3405                         // TODO: check if the surfaces in the model can receive light
3406                         // so now check if it's in a leaf seen by the light
3407                         if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->brush.BoxTouchingLeafPVS && !r_refdef.scene.worldmodel->brush.BoxTouchingLeafPVS(r_refdef.scene.worldmodel, leafpvs, ent->mins, ent->maxs))
3408                                 continue;
3409                         if (ent->flags & RENDER_NOSELFSHADOW)
3410                                 lightentities_noselfshadow[numlightentities_noselfshadow++] = ent;
3411                         else
3412                                 lightentities[numlightentities++] = ent;
3413                         // since it is lit, it probably also casts a shadow...
3414                         // about the VectorDistance2 - light emitting entities should not cast their own shadow
3415                         Matrix4x4_OriginFromMatrix(&ent->matrix, org);
3416                         if ((ent->flags & RENDER_SHADOW) && model->DrawShadowVolume && VectorDistance2(org, rtlight->shadoworigin) > 0.1)
3417                         {
3418                                 // note: exterior models without the RENDER_NOSELFSHADOW
3419                                 // flag still create a RENDER_NOSELFSHADOW shadow but
3420                                 // are lit normally, this means that they are
3421                                 // self-shadowing but do not shadow other
3422                                 // RENDER_NOSELFSHADOW entities such as the gun
3423                                 // (very weird, but keeps the player shadow off the gun)
3424                                 if (ent->flags & (RENDER_NOSELFSHADOW | RENDER_EXTERIORMODEL))
3425                                         shadowentities_noselfshadow[numshadowentities_noselfshadow++] = ent;
3426                                 else
3427                                         shadowentities[numshadowentities++] = ent;
3428                         }
3429                 }
3430                 else if (ent->flags & RENDER_SHADOW)
3431                 {
3432                         // this entity is not receiving light, but may still need to
3433                         // cast a shadow...
3434                         // TODO: check if the surfaces in the model can cast shadow
3435                         // now check if it is in a leaf seen by the light
3436                         if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->brush.BoxTouchingLeafPVS && !r_refdef.scene.worldmodel->brush.BoxTouchingLeafPVS(r_refdef.scene.worldmodel, leafpvs, ent->mins, ent->maxs))
3437                                 continue;
3438                         // about the VectorDistance2 - light emitting entities should not cast their own shadow
3439                         Matrix4x4_OriginFromMatrix(&ent->matrix, org);
3440                         if ((ent->flags & RENDER_SHADOW) && model->DrawShadowVolume && VectorDistance2(org, rtlight->shadoworigin) > 0.1)
3441                         {
3442                                 if (ent->flags & (RENDER_NOSELFSHADOW | RENDER_EXTERIORMODEL))
3443                                         shadowentities_noselfshadow[numshadowentities_noselfshadow++] = ent;
3444                                 else
3445                                         shadowentities[numshadowentities++] = ent;
3446                         }
3447                 }
3448         }
3449
3450         // return if there's nothing at all to light
3451         if (numsurfaces + numlightentities + numlightentities_noselfshadow == 0)
3452                 return;
3453
3454         // count this light in the r_speeds
3455         r_refdef.stats.lights++;
3456
3457         // flag it as worth drawing later
3458         rtlight->draw = true;
3459
3460         // cache all the animated entities that cast a shadow but are not visible
3461         for (i = 0;i < numshadowentities;i++)
3462                 if (!shadowentities[i]->animcache_vertex3f)
3463                         R_AnimCache_GetEntity(shadowentities[i], false, false);
3464         for (i = 0;i < numshadowentities_noselfshadow;i++)
3465                 if (!shadowentities_noselfshadow[i]->animcache_vertex3f)
3466                         R_AnimCache_GetEntity(shadowentities_noselfshadow[i], false, false);
3467
3468         // allocate some temporary memory for rendering this light later in the frame
3469         // reusable buffers need to be copied, static data can be used as-is
3470         rtlight->cached_numlightentities               = numlightentities;
3471         rtlight->cached_numlightentities_noselfshadow  = numlightentities_noselfshadow;
3472         rtlight->cached_numshadowentities              = numshadowentities;
3473         rtlight->cached_numshadowentities_noselfshadow = numshadowentities_noselfshadow;
3474         rtlight->cached_numsurfaces                    = numsurfaces;
3475         rtlight->cached_lightentities                  = (entity_render_t**)R_FrameData_Store(numlightentities*sizeof(entity_render_t*), (void*)lightentities);
3476         rtlight->cached_lightentities_noselfshadow     = (entity_render_t**)R_FrameData_Store(numlightentities_noselfshadow*sizeof(entity_render_t*), (void*)lightentities_noselfshadow);
3477         rtlight->cached_shadowentities                 = (entity_render_t**)R_FrameData_Store(numshadowentities*sizeof(entity_render_t*), (void*)shadowentities);
3478         rtlight->cached_shadowentities_noselfshadow    = (entity_render_t**)R_FrameData_Store(numshadowentities_noselfshadow*sizeof(entity_render_t *), (void*)shadowentities_noselfshadow);
3479         if (shadowtrispvs == r_shadow_buffer_shadowtrispvs)
3480         {
3481                 int numshadowtrispvsbytes = (((r_refdef.scene.worldmodel->brush.shadowmesh ? r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles : r_refdef.scene.worldmodel->surfmesh.num_triangles) + 7) >> 3);
3482                 int numlighttrispvsbytes = ((r_refdef.scene.worldmodel->surfmesh.num_triangles + 7) >> 3);
3483                 rtlight->cached_shadowtrispvs                  =   (unsigned char *)R_FrameData_Store(numshadowtrispvsbytes, shadowtrispvs);
3484                 rtlight->cached_lighttrispvs                   =   (unsigned char *)R_FrameData_Store(numlighttrispvsbytes, lighttrispvs);
3485                 rtlight->cached_surfacelist                    =              (int*)R_FrameData_Store(numsurfaces*sizeof(int), (void*)surfacelist);
3486         }
3487         else
3488         {
3489                 // compiled light data
3490                 rtlight->cached_shadowtrispvs = shadowtrispvs;
3491                 rtlight->cached_lighttrispvs = lighttrispvs;
3492                 rtlight->cached_surfacelist = surfacelist;
3493         }
3494 }
3495
3496 void R_Shadow_DrawLight(rtlight_t *rtlight)
3497 {
3498         int i;
3499         int numsurfaces;
3500         unsigned char *shadowtrispvs, *lighttrispvs, *surfacesides;
3501         int numlightentities;
3502         int numlightentities_noselfshadow;
3503         int numshadowentities;
3504         int numshadowentities_noselfshadow;
3505         entity_render_t **lightentities;
3506         entity_render_t **lightentities_noselfshadow;
3507         entity_render_t **shadowentities;
3508         entity_render_t **shadowentities_noselfshadow;
3509         int *surfacelist;
3510         static unsigned char entitysides[MAX_EDICTS];
3511         static unsigned char entitysides_noselfshadow[MAX_EDICTS];
3512         vec3_t nearestpoint;
3513         vec_t distance;
3514         qboolean castshadows;
3515         int lodlinear;
3516
3517         // check if we cached this light this frame (meaning it is worth drawing)
3518         if (!rtlight->draw)
3519                 return;
3520
3521         // if R_FrameData_Store ran out of space we skip anything dependent on it
3522         if (r_framedata_failed)
3523                 return;
3524
3525         numlightentities = rtlight->cached_numlightentities;
3526         numlightentities_noselfshadow = rtlight->cached_numlightentities_noselfshadow;
3527         numshadowentities = rtlight->cached_numshadowentities;
3528         numshadowentities_noselfshadow = rtlight->cached_numshadowentities_noselfshadow;
3529         numsurfaces = rtlight->cached_numsurfaces;
3530         lightentities = rtlight->cached_lightentities;
3531         lightentities_noselfshadow = rtlight->cached_lightentities_noselfshadow;
3532         shadowentities = rtlight->cached_shadowentities;
3533         shadowentities_noselfshadow = rtlight->cached_shadowentities_noselfshadow;
3534         shadowtrispvs = rtlight->cached_shadowtrispvs;
3535         lighttrispvs = rtlight->cached_lighttrispvs;
3536         surfacelist = rtlight->cached_surfacelist;
3537
3538         // set up a scissor rectangle for this light
3539         if (R_Shadow_ScissorForBBox(rtlight->cached_cullmins, rtlight->cached_cullmaxs))
3540                 return;
3541
3542         // don't let sound skip if going slow
3543         if (r_refdef.scene.extraupdate)
3544                 S_ExtraUpdate ();
3545
3546         // make this the active rtlight for rendering purposes
3547         R_Shadow_RenderMode_ActiveLight(rtlight);
3548
3549         if (r_showshadowvolumes.integer && r_refdef.view.showdebug && numsurfaces + numshadowentities + numshadowentities_noselfshadow && rtlight->shadow && (rtlight->isstatic ? r_refdef.scene.rtworldshadows : r_refdef.scene.rtdlightshadows))
3550         {
3551                 // optionally draw visible shape of the shadow volumes
3552                 // for performance analysis by level designers
3553                 R_Shadow_RenderMode_VisibleShadowVolumes();
3554                 if (numsurfaces)
3555                         R_Shadow_DrawWorldShadow_ShadowVolume(numsurfaces, surfacelist, shadowtrispvs);
3556                 for (i = 0;i < numshadowentities;i++)
3557                         R_Shadow_DrawEntityShadow(shadowentities[i]);
3558                 for (i = 0;i < numshadowentities_noselfshadow;i++)
3559                         R_Shadow_DrawEntityShadow(shadowentities_noselfshadow[i]);
3560                 R_Shadow_RenderMode_VisibleLighting(false, false);
3561         }
3562
3563         if (r_showlighting.integer && r_refdef.view.showdebug && numsurfaces + numlightentities + numlightentities_noselfshadow)
3564         {
3565                 // optionally draw the illuminated areas
3566                 // for performance analysis by level designers
3567                 R_Shadow_RenderMode_VisibleLighting(false, false);
3568                 if (numsurfaces)
3569                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
3570                 for (i = 0;i < numlightentities;i++)
3571                         R_Shadow_DrawEntityLight(lightentities[i]);
3572                 for (i = 0;i < numlightentities_noselfshadow;i++)
3573                         R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
3574         }
3575
3576         castshadows = numsurfaces + numshadowentities + numshadowentities_noselfshadow > 0 && rtlight->shadow && (rtlight->isstatic ? r_refdef.scene.rtworldshadows : r_refdef.scene.rtdlightshadows);
3577
3578         nearestpoint[0] = bound(rtlight->cullmins[0], r_refdef.view.origin[0], rtlight->cullmaxs[0]);
3579         nearestpoint[1] = bound(rtlight->cullmins[1], r_refdef.view.origin[1], rtlight->cullmaxs[1]);
3580         nearestpoint[2] = bound(rtlight->cullmins[2], r_refdef.view.origin[2], rtlight->cullmaxs[2]);
3581         distance = VectorDistance(nearestpoint, r_refdef.view.origin);
3582
3583         lodlinear = (rtlight->radius * r_shadow_shadowmapping_precision.value) / sqrt(max(1.0f, distance/rtlight->radius));
3584         //lodlinear = (int)(r_shadow_shadowmapping_lod_bias.value + r_shadow_shadowmapping_lod_scale.value * rtlight->radius / max(1.0f, distance));
3585         lodlinear = bound(r_shadow_shadowmapping_minsize.integer, lodlinear, r_shadow_shadowmapmaxsize);
3586
3587         if (castshadows && r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAP2D)
3588         {
3589                 float borderbias;
3590                 int side;
3591                 int size;
3592                 int castermask = 0;
3593                 int receivermask = 0;
3594                 matrix4x4_t radiustolight = rtlight->matrix_worldtolight;
3595                 Matrix4x4_Abs(&radiustolight);
3596
3597                 r_shadow_shadowmaplod = 0;
3598                 for (i = 1;i < R_SHADOW_SHADOWMAP_NUMCUBEMAPS;i++)
3599                         if ((r_shadow_shadowmapmaxsize >> i) > lodlinear)
3600                                 r_shadow_shadowmaplod = i;
3601
3602                 size = bound(r_shadow_shadowmapborder, lodlinear, r_shadow_shadowmapmaxsize);
3603
3604                 borderbias = r_shadow_shadowmapborder / (float)(size - r_shadow_shadowmapborder);
3605
3606                 surfacesides = NULL;
3607                 if (numsurfaces)
3608                 {
3609                         if (rtlight->compiled && r_shadow_realtime_world_compile.integer && r_shadow_realtime_world_compileshadow.integer)
3610                         {
3611                                 castermask = rtlight->static_shadowmap_casters;
3612                                 receivermask = rtlight->static_shadowmap_receivers;
3613                         }
3614                         else
3615                         {
3616                                 surfacesides = r_shadow_buffer_surfacesides;
3617                                 for(i = 0;i < numsurfaces;i++)
3618                                 {
3619                                         msurface_t *surface = r_refdef.scene.worldmodel->data_surfaces + surfacelist[i];
3620                                         surfacesides[i] = R_Shadow_CalcBBoxSideMask(surface->mins, surface->maxs, &rtlight->matrix_worldtolight, &radiustolight, borderbias);
3621                                         castermask |= surfacesides[i];
3622                                         receivermask |= surfacesides[i];
3623                                 }
3624                         }
3625                 }
3626                 if (receivermask < 0x3F)
3627                 {
3628                         for (i = 0;i < numlightentities;i++)
3629                                 receivermask |= R_Shadow_CalcEntitySideMask(lightentities[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias);
3630                         if (receivermask < 0x3F)
3631                                 for(i = 0; i < numlightentities_noselfshadow;i++)
3632                                         receivermask |= R_Shadow_CalcEntitySideMask(lightentities_noselfshadow[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias);
3633                 }
3634
3635                 receivermask &= R_Shadow_CullFrustumSides(rtlight, size, r_shadow_shadowmapborder);
3636
3637                 if (receivermask)
3638                 {
3639                         for (i = 0;i < numshadowentities;i++)
3640                                 castermask |= (entitysides[i] = R_Shadow_CalcEntitySideMask(shadowentities[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias));
3641                         for (i = 0;i < numshadowentities_noselfshadow;i++)
3642                                 castermask |= (entitysides_noselfshadow[i] = R_Shadow_CalcEntitySideMask(shadowentities_noselfshadow[i], &rtlight->matrix_worldtolight, &radiustolight, borderbias));
3643                 }
3644
3645                 //Con_Printf("distance %f lodlinear %i (lod %i) size %i\n", distance, lodlinear, r_shadow_shadowmaplod, size);
3646
3647                 // render shadow casters into 6 sided depth texture
3648                 for (side = 0;side < 6;side++) if (receivermask & (1 << side))
3649                 {
3650                         R_Shadow_RenderMode_ShadowMap(side, receivermask, size);
3651                         if (! (castermask & (1 << side))) continue;
3652                         if (numsurfaces)
3653                                 R_Shadow_DrawWorldShadow_ShadowMap(numsurfaces, surfacelist, shadowtrispvs, surfacesides);
3654                         for (i = 0;i < numshadowentities;i++) if (entitysides[i] & (1 << side))
3655                                 R_Shadow_DrawEntityShadow(shadowentities[i]);
3656                 }
3657
3658                 if (numlightentities_noselfshadow)
3659                 {
3660                         // render lighting using the depth texture as shadowmap
3661                         // draw lighting in the unmasked areas
3662                         R_Shadow_RenderMode_Lighting(false, false, true);
3663                         for (i = 0;i < numlightentities_noselfshadow;i++)
3664                                 R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
3665                 }
3666
3667                 // render shadow casters into 6 sided depth texture
3668                 if (numshadowentities_noselfshadow)
3669                 {
3670                         for (side = 0;side < 6;side++) if ((receivermask & castermask) & (1 << side))
3671                         {
3672                                 R_Shadow_RenderMode_ShadowMap(side, 0, size);
3673                                 for (i = 0;i < numshadowentities_noselfshadow;i++) if (entitysides_noselfshadow[i] & (1 << side))
3674                                         R_Shadow_DrawEntityShadow(shadowentities_noselfshadow[i]);
3675                         }
3676                 }
3677
3678                 // render lighting using the depth texture as shadowmap
3679                 // draw lighting in the unmasked areas
3680                 R_Shadow_RenderMode_Lighting(false, false, true);
3681                 // draw lighting in the unmasked areas
3682                 if (numsurfaces)
3683                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
3684                 for (i = 0;i < numlightentities;i++)
3685                         R_Shadow_DrawEntityLight(lightentities[i]);
3686         }
3687         else if (castshadows && vid.stencil)
3688         {
3689                 // draw stencil shadow volumes to mask off pixels that are in shadow
3690                 // so that they won't receive lighting
3691                 GL_Scissor(r_shadow_lightscissor[0], r_shadow_lightscissor[1], r_shadow_lightscissor[2], r_shadow_lightscissor[3]);
3692                 R_Shadow_ClearStencil();
3693
3694                 if (numsurfaces)
3695                         R_Shadow_DrawWorldShadow_ShadowVolume(numsurfaces, surfacelist, shadowtrispvs);
3696                 for (i = 0;i < numshadowentities;i++)
3697                         R_Shadow_DrawEntityShadow(shadowentities[i]);
3698
3699                 // draw lighting in the unmasked areas
3700                 R_Shadow_RenderMode_Lighting(true, false, false);
3701                 for (i = 0;i < numlightentities_noselfshadow;i++)
3702                         R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
3703
3704                 for (i = 0;i < numshadowentities_noselfshadow;i++)
3705                         R_Shadow_DrawEntityShadow(shadowentities_noselfshadow[i]);
3706
3707                 // draw lighting in the unmasked areas
3708                 R_Shadow_RenderMode_Lighting(true, false, false);
3709                 if (numsurfaces)
3710                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
3711                 for (i = 0;i < numlightentities;i++)
3712                         R_Shadow_DrawEntityLight(lightentities[i]);
3713         }
3714         else
3715         {
3716                 // draw lighting in the unmasked areas
3717                 R_Shadow_RenderMode_Lighting(false, false, false);
3718                 if (numsurfaces)
3719                         R_Shadow_DrawWorldLight(numsurfaces, surfacelist, lighttrispvs);
3720                 for (i = 0;i < numlightentities;i++)
3721                         R_Shadow_DrawEntityLight(lightentities[i]);
3722                 for (i = 0;i < numlightentities_noselfshadow;i++)
3723                         R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
3724         }
3725
3726         if (r_shadow_usingdeferredprepass)
3727         {
3728                 // when rendering deferred lighting, we simply rasterize the box
3729                 if (castshadows && r_shadow_shadowmode == R_SHADOW_SHADOWMODE_SHADOWMAP2D)
3730                         R_Shadow_RenderMode_DrawDeferredLight(false, true);
3731                 else if (castshadows && vid.stencil)
3732                         R_Shadow_RenderMode_DrawDeferredLight(true, false);
3733                 else
3734                         R_Shadow_RenderMode_DrawDeferredLight(false, false);
3735         }
3736 }
3737
3738 static void R_Shadow_FreeDeferred(void)
3739 {
3740         R_Mesh_DestroyFramebufferObject(r_shadow_prepassgeometryfbo);
3741         r_shadow_prepassgeometryfbo = 0;
3742
3743         R_Mesh_DestroyFramebufferObject(r_shadow_prepasslightingfbo);
3744         r_shadow_prepasslightingfbo = 0;
3745
3746         if (r_shadow_prepassgeometrydepthtexture)
3747                 R_FreeTexture(r_shadow_prepassgeometrydepthtexture);
3748         r_shadow_prepassgeometrydepthtexture = NULL;
3749
3750         if (r_shadow_prepassgeometrydepthcolortexture)
3751                 R_FreeTexture(r_shadow_prepassgeometrydepthcolortexture);
3752         r_shadow_prepassgeometrydepthcolortexture = NULL;
3753
3754         if (r_shadow_prepassgeometrynormalmaptexture)
3755                 R_FreeTexture(r_shadow_prepassgeometrynormalmaptexture);
3756         r_shadow_prepassgeometrynormalmaptexture = NULL;
3757
3758         if (r_shadow_prepasslightingdiffusetexture)
3759                 R_FreeTexture(r_shadow_prepasslightingdiffusetexture);
3760         r_shadow_prepasslightingdiffusetexture = NULL;
3761
3762         if (r_shadow_prepasslightingspeculartexture)
3763                 R_FreeTexture(r_shadow_prepasslightingspeculartexture);
3764         r_shadow_prepasslightingspeculartexture = NULL;
3765 }
3766
3767 void R_Shadow_DrawPrepass(void)
3768 {
3769         int i;
3770         int flag;
3771         int lnum;
3772         size_t lightindex;
3773         dlight_t *light;
3774         size_t range;
3775         entity_render_t *ent;
3776         float clearcolor[4];
3777
3778         GL_AlphaTest(false);
3779         R_Mesh_ResetTextureState();
3780         GL_DepthMask(true);
3781         GL_ColorMask(1,1,1,1);
3782         GL_BlendFunc(GL_ONE, GL_ZERO);
3783         GL_Color(1,1,1,1);
3784         GL_DepthTest(true);
3785         R_Mesh_SetRenderTargets(r_shadow_prepassgeometryfbo, r_shadow_prepassgeometrydepthtexture, r_shadow_prepassgeometrynormalmaptexture, r_shadow_prepassgeometrydepthcolortexture, NULL, NULL);
3786         Vector4Set(clearcolor, 0.5f,0.5f,0.5f,1.0f);
3787         GL_Clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
3788         if (r_timereport_active)
3789                 R_TimeReport("prepasscleargeom");
3790
3791         if (cl.csqc_vidvars.drawworld && r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->DrawPrepass)
3792                 r_refdef.scene.worldmodel->DrawPrepass(r_refdef.scene.worldentity);
3793         if (r_timereport_active)
3794                 R_TimeReport("prepassworld");
3795
3796         for (i = 0;i < r_refdef.scene.numentities;i++)
3797         {
3798                 if (!r_refdef.viewcache.entityvisible[i])
3799                         continue;
3800                 ent = r_refdef.scene.entities[i];
3801                 if (ent->model && ent->model->DrawPrepass != NULL)
3802                         ent->model->DrawPrepass(ent);
3803         }
3804
3805         if (r_timereport_active)
3806                 R_TimeReport("prepassmodels");
3807
3808         GL_DepthMask(false);
3809         GL_ColorMask(1,1,1,1);
3810         GL_Color(1,1,1,1);
3811         GL_DepthTest(true);
3812         R_Mesh_SetRenderTargets(r_shadow_prepasslightingfbo, r_shadow_prepassgeometrydepthtexture, r_shadow_prepasslightingdiffusetexture, r_shadow_prepasslightingspeculartexture, NULL, NULL);
3813         Vector4Set(clearcolor, 0, 0, 0, 0);
3814         GL_Clear(GL_COLOR_BUFFER_BIT, clearcolor, 1.0f, 0);
3815         if (r_timereport_active)
3816                 R_TimeReport("prepassclearlit");
3817
3818         R_Shadow_RenderMode_Begin();
3819
3820         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
3821         if (r_shadow_debuglight.integer >= 0)
3822         {
3823                 lightindex = r_shadow_debuglight.integer;
3824                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
3825                 if (light && (light->flags & flag) && light->rtlight.draw)
3826                         R_Shadow_DrawLight(&light->rtlight);
3827         }
3828         else
3829         {
3830                 range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
3831                 for (lightindex = 0;lightindex < range;lightindex++)
3832                 {
3833                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
3834                         if (light && (light->flags & flag) && light->rtlight.draw)
3835                                 R_Shadow_DrawLight(&light->rtlight);
3836                 }
3837         }
3838         if (r_refdef.scene.rtdlight)
3839                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
3840                         if (r_refdef.scene.lights[lnum]->draw)
3841                                 R_Shadow_DrawLight(r_refdef.scene.lights[lnum]);
3842
3843         R_Mesh_ResetRenderTargets();
3844
3845         R_Shadow_RenderMode_End();
3846
3847         if (r_timereport_active)
3848                 R_TimeReport("prepasslights");
3849 }
3850
3851 void R_Shadow_DrawLightSprites(void);
3852 void R_Shadow_PrepareLights(void)
3853 {
3854         int flag;
3855         int lnum;
3856         size_t lightindex;
3857         dlight_t *light;
3858         size_t range;
3859         float f;
3860         GLenum status;
3861
3862         if (r_shadow_shadowmapmaxsize != bound(1, r_shadow_shadowmapping_maxsize.integer, (int)vid.maxtexturesize_2d / 4) ||
3863                 (r_shadow_shadowmode != R_SHADOW_SHADOWMODE_STENCIL) != (r_shadow_shadowmapping.integer || r_shadow_deferred.integer) ||
3864                 r_shadow_shadowmapvsdct != (r_shadow_shadowmapping_vsdct.integer != 0 && vid.renderpath == RENDERPATH_GL20) ||
3865                 r_shadow_shadowmapfilterquality != r_shadow_shadowmapping_filterquality.integer ||
3866                 r_shadow_shadowmapdepthbits != r_shadow_shadowmapping_depthbits.integer ||
3867                 r_shadow_shadowmapborder != bound(0, r_shadow_shadowmapping_bordersize.integer, 16))
3868                 R_Shadow_FreeShadowMaps();
3869
3870         r_shadow_usingshadowmaportho = false;
3871
3872         switch (vid.renderpath)
3873         {
3874         case RENDERPATH_GL20:
3875         case RENDERPATH_CGGL:
3876         case RENDERPATH_D3D9:
3877         case RENDERPATH_D3D10:
3878         case RENDERPATH_D3D11:
3879                 if (!r_shadow_deferred.integer || r_shadow_shadowmode == R_SHADOW_SHADOWMODE_STENCIL || !vid.support.ext_framebuffer_object || vid.maxdrawbuffers < 2)
3880                 {
3881                         r_shadow_usingdeferredprepass = false;
3882                         if (r_shadow_prepass_width)
3883                                 R_Shadow_FreeDeferred();
3884                         r_shadow_prepass_width = r_shadow_prepass_height = 0;
3885                         break;
3886                 }
3887
3888                 if (r_shadow_prepass_width != vid.width || r_shadow_prepass_height != vid.height)
3889                 {
3890                         R_Shadow_FreeDeferred();
3891
3892                         r_shadow_usingdeferredprepass = true;
3893                         r_shadow_prepass_width = vid.width;
3894                         r_shadow_prepass_height = vid.height;
3895                         r_shadow_prepassgeometrydepthtexture = R_LoadTextureShadowMap2D(r_shadow_texturepool, "prepassgeometrydepthmap", vid.width, vid.height, 24, false);
3896                         switch (vid.renderpath)
3897                         {
3898                         case RENDERPATH_D3D9:
3899                                 r_shadow_prepassgeometrydepthcolortexture = R_LoadTexture2D(r_shadow_texturepool, "prepassgeometrydepthcolormap", vid.width, vid.height, NULL, TEXTYPE_COLORBUFFER, TEXF_RENDERTARGET | TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCENEAREST, -1, NULL);
3900                                 break;
3901                         default:
3902                                 break;
3903                         }
3904                         r_shadow_prepassgeometrynormalmaptexture = R_LoadTexture2D(r_shadow_texturepool, "prepassgeometrynormalmap", vid.width, vid.height, NULL, TEXTYPE_COLORBUFFER, TEXF_RENDERTARGET | TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCENEAREST, -1, NULL);
3905                         r_shadow_prepasslightingdiffusetexture = R_LoadTexture2D(r_shadow_texturepool, "prepasslightingdiffuse", vid.width, vid.height, NULL, TEXTYPE_COLORBUFFER, TEXF_RENDERTARGET | TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCENEAREST, -1, NULL);
3906                         r_shadow_prepasslightingspeculartexture = R_LoadTexture2D(r_shadow_texturepool, "prepasslightingspecular", vid.width, vid.height, NULL, TEXTYPE_COLORBUFFER, TEXF_RENDERTARGET | TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCENEAREST, -1, NULL);
3907
3908                         // set up the geometry pass fbo (depth + normalmap)
3909                         r_shadow_prepassgeometryfbo = R_Mesh_CreateFramebufferObject(r_shadow_prepassgeometrydepthtexture, r_shadow_prepassgeometrynormalmaptexture, NULL, NULL, NULL);
3910                         R_Mesh_SetRenderTargets(r_shadow_prepassgeometryfbo, r_shadow_prepassgeometrydepthtexture, r_shadow_prepassgeometrynormalmaptexture, r_shadow_prepassgeometrydepthcolortexture, NULL, NULL);
3911                         // render depth into one texture and normalmap into the other
3912                         if (qglDrawBuffersARB)
3913                         {
3914                                 qglDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);CHECKGLERROR
3915                                 qglReadBuffer(GL_NONE);CHECKGLERROR
3916                                 status = qglCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);CHECKGLERROR
3917                                 if (status != GL_FRAMEBUFFER_COMPLETE_EXT)
3918                                 {
3919                                         Con_Printf("R_PrepareRTLights: glCheckFramebufferStatusEXT returned %i\n", status);
3920                                         Cvar_SetValueQuick(&r_shadow_deferred, 0);
3921                                         r_shadow_usingdeferredprepass = false;
3922                                 }
3923                         }
3924
3925                         // set up the lighting pass fbo (diffuse + specular)
3926                         r_shadow_prepasslightingfbo = R_Mesh_CreateFramebufferObject(r_shadow_prepassgeometrydepthtexture, r_shadow_prepasslightingdiffusetexture, r_shadow_prepasslightingspeculartexture, NULL, NULL);
3927                         R_Mesh_SetRenderTargets(r_shadow_prepasslightingfbo, r_shadow_prepassgeometrydepthtexture, r_shadow_prepasslightingdiffusetexture, r_shadow_prepasslightingspeculartexture, NULL, NULL);
3928                         // render diffuse into one texture and specular into another,
3929                         // with depth and normalmap bound as textures,
3930                         // with depth bound as attachment as well
3931                         if (qglDrawBuffersARB)
3932                         {
3933                                 qglDrawBuffersARB(2, r_shadow_prepasslightingdrawbuffers);CHECKGLERROR
3934                                 qglReadBuffer(GL_NONE);CHECKGLERROR
3935                                 status = qglCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);CHECKGLERROR
3936                                 if (status != GL_FRAMEBUFFER_COMPLETE_EXT)
3937                                 {
3938                                         Con_Printf("R_PrepareRTLights: glCheckFramebufferStatusEXT returned %i\n", status);
3939                                         Cvar_SetValueQuick(&r_shadow_deferred, 0);
3940                                         r_shadow_usingdeferredprepass = false;
3941                                 }
3942                         }
3943                 }
3944                 break;
3945         case RENDERPATH_GL13:
3946         case RENDERPATH_GL11:
3947                 r_shadow_usingdeferredprepass = false;
3948                 break;
3949         }
3950
3951         R_Shadow_EnlargeLeafSurfaceTrisBuffer(r_refdef.scene.worldmodel->brush.num_leafs, r_refdef.scene.worldmodel->num_surfaces, r_refdef.scene.worldmodel->brush.shadowmesh ? r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles : r_refdef.scene.worldmodel->surfmesh.num_triangles, r_refdef.scene.worldmodel->surfmesh.num_triangles);
3952
3953         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
3954         if (r_shadow_debuglight.integer >= 0)
3955         {
3956                 lightindex = r_shadow_debuglight.integer;
3957                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
3958                 if (light && (light->flags & flag))
3959                         R_Shadow_PrepareLight(&light->rtlight);
3960         }
3961         else
3962         {
3963                 range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
3964                 for (lightindex = 0;lightindex < range;lightindex++)
3965                 {
3966                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
3967                         if (light && (light->flags & flag))
3968                                 R_Shadow_PrepareLight(&light->rtlight);
3969                 }
3970         }
3971         if (r_refdef.scene.rtdlight)
3972         {
3973                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
3974                         R_Shadow_PrepareLight(r_refdef.scene.lights[lnum]);
3975         }
3976         else if(gl_flashblend.integer)
3977         {
3978                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
3979                 {
3980                         rtlight_t *rtlight = r_refdef.scene.lights[lnum];
3981                         f = (rtlight->style >= 0 ? r_refdef.scene.lightstylevalue[rtlight->style] : 1) * r_shadow_lightintensityscale.value;
3982                         VectorScale(rtlight->color, f, rtlight->currentcolor);
3983                 }
3984         }
3985
3986         if (r_editlights.integer)
3987                 R_Shadow_DrawLightSprites();
3988 }
3989
3990 void R_Shadow_DrawLights(void)
3991 {
3992         int flag;
3993         int lnum;
3994         size_t lightindex;
3995         dlight_t *light;
3996         size_t range;
3997
3998         R_Shadow_RenderMode_Begin();
3999
4000         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
4001         if (r_shadow_debuglight.integer >= 0)
4002         {
4003                 lightindex = r_shadow_debuglight.integer;
4004                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4005                 if (light && (light->flags & flag))
4006                         R_Shadow_DrawLight(&light->rtlight);
4007         }
4008         else
4009         {
4010                 range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4011                 for (lightindex = 0;lightindex < range;lightindex++)
4012                 {
4013                         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4014                         if (light && (light->flags & flag))
4015                                 R_Shadow_DrawLight(&light->rtlight);
4016                 }
4017         }
4018         if (r_refdef.scene.rtdlight)
4019                 for (lnum = 0;lnum < r_refdef.scene.numlights;lnum++)
4020                         R_Shadow_DrawLight(r_refdef.scene.lights[lnum]);
4021
4022         R_Shadow_RenderMode_End();
4023 }
4024
4025 extern const float r_screenvertex3f[12];
4026 extern void R_SetupView(qboolean allowwaterclippingplane);
4027 extern void R_ResetViewRendering3D(void);
4028 extern void R_ResetViewRendering2D(void);
4029 extern cvar_t r_shadows;
4030 extern cvar_t r_shadows_darken;
4031 extern cvar_t r_shadows_drawafterrtlighting;
4032 extern cvar_t r_shadows_castfrombmodels;
4033 extern cvar_t r_shadows_throwdistance;
4034 extern cvar_t r_shadows_throwdirection;
4035 extern cvar_t r_shadows_focus;
4036 extern cvar_t r_shadows_shadowmapscale;
4037
4038 void R_Shadow_PrepareModelShadows(void)
4039 {
4040         int i;
4041         float scale, size, radius, dot1, dot2;
4042         vec3_t shadowdir, shadowforward, shadowright, shadoworigin, shadowfocus, shadowmins, shadowmaxs;
4043         entity_render_t *ent;
4044
4045         if (!r_refdef.scene.numentities)
4046                 return;
4047
4048         switch (r_shadow_shadowmode)
4049         {
4050         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
4051                 if (r_shadows.integer >= 2)
4052                         break;
4053                 // fall through
4054         case R_SHADOW_SHADOWMODE_STENCIL:
4055                 for (i = 0;i < r_refdef.scene.numentities;i++)
4056                 {
4057                         ent = r_refdef.scene.entities[i];
4058                         if (!ent->animcache_vertex3f && ent->model && ent->model->DrawShadowVolume != NULL && (!ent->model->brush.submodel || r_shadows_castfrombmodels.integer) && (ent->flags & RENDER_SHADOW))
4059                                 R_AnimCache_GetEntity(ent, false, false);
4060                 }
4061                 return;
4062         default:
4063                 return;
4064         }
4065
4066         size = 2*r_shadow_shadowmapmaxsize;
4067         scale = r_shadow_shadowmapping_precision.value * r_shadows_shadowmapscale.value;
4068         radius = 0.5f * size / scale;
4069
4070         Math_atov(r_shadows_throwdirection.string, shadowdir);
4071         VectorNormalize(shadowdir);
4072         dot1 = DotProduct(r_refdef.view.forward, shadowdir);
4073         dot2 = DotProduct(r_refdef.view.up, shadowdir);
4074         if (fabs(dot1) <= fabs(dot2))
4075                 VectorMA(r_refdef.view.forward, -dot1, shadowdir, shadowforward);
4076         else
4077                 VectorMA(r_refdef.view.up, -dot2, shadowdir, shadowforward);
4078         VectorNormalize(shadowforward);
4079         CrossProduct(shadowdir, shadowforward, shadowright);
4080         Math_atov(r_shadows_focus.string, shadowfocus);
4081         VectorM(shadowfocus[0], r_refdef.view.right, shadoworigin);
4082         VectorMA(shadoworigin, shadowfocus[1], r_refdef.view.up, shadoworigin);
4083         VectorMA(shadoworigin, -shadowfocus[2], r_refdef.view.forward, shadoworigin);
4084         VectorAdd(shadoworigin, r_refdef.view.origin, shadoworigin);
4085         if (shadowfocus[0] || shadowfocus[1] || shadowfocus[2])
4086                 dot1 = 1;
4087         VectorMA(shadoworigin, (1.0f - fabs(dot1)) * radius, shadowforward, shadoworigin);
4088
4089         shadowmins[0] = shadoworigin[0] - r_shadows_throwdistance.value * fabs(shadowdir[0]) - radius * (fabs(shadowforward[0]) + fabs(shadowright[0]));
4090         shadowmins[1] = shadoworigin[1] - r_shadows_throwdistance.value * fabs(shadowdir[1]) - radius * (fabs(shadowforward[1]) + fabs(shadowright[1]));
4091         shadowmins[2] = shadoworigin[2] - r_shadows_throwdistance.value * fabs(shadowdir[2]) - radius * (fabs(shadowforward[2]) + fabs(shadowright[2]));
4092         shadowmaxs[0] = shadoworigin[0] + r_shadows_throwdistance.value * fabs(shadowdir[0]) + radius * (fabs(shadowforward[0]) + fabs(shadowright[0]));
4093         shadowmaxs[1] = shadoworigin[1] + r_shadows_throwdistance.value * fabs(shadowdir[1]) + radius * (fabs(shadowforward[1]) + fabs(shadowright[1]));
4094         shadowmaxs[2] = shadoworigin[2] + r_shadows_throwdistance.value * fabs(shadowdir[2]) + radius * (fabs(shadowforward[2]) + fabs(shadowright[2]));
4095
4096         for (i = 0;i < r_refdef.scene.numentities;i++)
4097         {
4098                 ent = r_refdef.scene.entities[i];
4099                 if (!BoxesOverlap(ent->mins, ent->maxs, shadowmins, shadowmaxs))
4100                         continue;
4101                 // cast shadows from anything of the map (submodels are optional)
4102                 if (!ent->animcache_vertex3f && ent->model && ent->model->DrawShadowMap != NULL && (!ent->model->brush.submodel || r_shadows_castfrombmodels.integer) && (ent->flags & RENDER_SHADOW))
4103                         R_AnimCache_GetEntity(ent, false, false);
4104         }
4105 }
4106
4107 void R_DrawModelShadowMaps(void)
4108 {
4109         int i;
4110         float relativethrowdistance, scale, size, radius, nearclip, farclip, bias, dot1, dot2;
4111         entity_render_t *ent;
4112         vec3_t relativelightorigin;
4113         vec3_t relativelightdirection, relativeforward, relativeright;
4114         vec3_t relativeshadowmins, relativeshadowmaxs;
4115         vec3_t shadowdir, shadowforward, shadowright, shadoworigin, shadowfocus;
4116         float m[12];
4117         matrix4x4_t shadowmatrix, cameramatrix, mvpmatrix, invmvpmatrix, scalematrix, texmatrix;
4118         r_viewport_t viewport;
4119         GLuint fbo = 0;
4120         float clearcolor[4];
4121
4122         if (!r_refdef.scene.numentities)
4123                 return;
4124
4125         switch (r_shadow_shadowmode)
4126         {
4127         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
4128                 break;
4129         default:
4130                 return;
4131         }
4132
4133         R_ResetViewRendering3D();
4134         R_Shadow_RenderMode_Begin();
4135         R_Shadow_RenderMode_ActiveLight(NULL);
4136
4137         switch (r_shadow_shadowmode)
4138         {
4139         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
4140                 if (!r_shadow_shadowmap2dtexture)
4141                         R_Shadow_MakeShadowMap(0, r_shadow_shadowmapmaxsize);
4142                 fbo = r_shadow_fbo2d;
4143                 r_shadow_shadowmap_texturescale[0] = 1.0f / R_TextureWidth(r_shadow_shadowmap2dtexture);
4144                 r_shadow_shadowmap_texturescale[1] = 1.0f / R_TextureHeight(r_shadow_shadowmap2dtexture);
4145                 r_shadow_rendermode = R_SHADOW_RENDERMODE_SHADOWMAP2D;
4146                 break;
4147         default:
4148                 break;
4149         }
4150
4151         size = 2*r_shadow_shadowmapmaxsize;
4152         scale = (r_shadow_shadowmapping_precision.value * r_shadows_shadowmapscale.value) / size;
4153         radius = 0.5f / scale;
4154         nearclip = -r_shadows_throwdistance.value;
4155         farclip = r_shadows_throwdistance.value;
4156         bias = r_shadow_shadowmapping_bias.value * r_shadow_shadowmapping_nearclip.value / (2 * r_shadows_throwdistance.value) * (1024.0f / size);
4157
4158         r_shadow_shadowmap_parameters[0] = size;
4159         r_shadow_shadowmap_parameters[1] = size;
4160         r_shadow_shadowmap_parameters[2] = 1.0;
4161         r_shadow_shadowmap_parameters[3] = bound(0.0f, 1.0f - r_shadows_darken.value, 1.0f);
4162
4163         Math_atov(r_shadows_throwdirection.string, shadowdir);
4164         VectorNormalize(shadowdir);
4165         Math_atov(r_shadows_focus.string, shadowfocus);
4166         VectorM(shadowfocus[0], r_refdef.view.right, shadoworigin);
4167         VectorMA(shadoworigin, shadowfocus[1], r_refdef.view.up, shadoworigin);
4168         VectorMA(shadoworigin, -shadowfocus[2], r_refdef.view.forward, shadoworigin);
4169         VectorAdd(shadoworigin, r_refdef.view.origin, shadoworigin);
4170         dot1 = DotProduct(r_refdef.view.forward, shadowdir);
4171         dot2 = DotProduct(r_refdef.view.up, shadowdir);
4172         if (fabs(dot1) <= fabs(dot2))
4173                 VectorMA(r_refdef.view.forward, -dot1, shadowdir, shadowforward);
4174         else
4175                 VectorMA(r_refdef.view.up, -dot2, shadowdir, shadowforward);
4176         VectorNormalize(shadowforward);
4177         VectorM(scale, shadowforward, &m[0]);
4178         if (shadowfocus[0] || shadowfocus[1] || shadowfocus[2])
4179                 dot1 = 1;
4180         m[3] = fabs(dot1) * 0.5f - DotProduct(shadoworigin, &m[0]);
4181         CrossProduct(shadowdir, shadowforward, shadowright);
4182         VectorM(scale, shadowright, &m[4]);
4183         m[7] = 0.5f - DotProduct(shadoworigin, &m[4]);
4184         VectorM(1.0f / (farclip - nearclip), shadowdir, &m[8]);
4185         m[11] = 0.5f - DotProduct(shadoworigin, &m[8]);
4186         Matrix4x4_FromArray12FloatD3D(&shadowmatrix, m);
4187         Matrix4x4_Invert_Full(&cameramatrix, &shadowmatrix);
4188         R_Viewport_InitOrtho(&viewport, &cameramatrix, 0, 0, size, size, 0, 0, 1, 1, 0, -1, NULL);
4189
4190         VectorMA(shadoworigin, (1.0f - fabs(dot1)) * radius, shadowforward, shadoworigin);
4191
4192         R_Mesh_SetRenderTargets(fbo, r_shadow_shadowmap2dtexture, r_shadow_shadowmap2dcolortexture, NULL, NULL, NULL);
4193         R_SetupShader_DepthOrShadow();
4194         GL_PolygonOffset(r_shadow_shadowmapping_polygonfactor.value, r_shadow_shadowmapping_polygonoffset.value);
4195         GL_DepthMask(true);
4196         GL_DepthTest(true);
4197         R_SetViewport(&viewport);
4198         GL_Scissor(viewport.x, viewport.y, min(viewport.width + r_shadow_shadowmapborder, 2*r_shadow_shadowmapmaxsize), viewport.height + r_shadow_shadowmapborder);
4199         Vector4Set(clearcolor, 1,1,1,1);
4200         // in D3D9 we have to render to a color texture shadowmap
4201         // in GL we render directly to a depth texture only
4202         if (r_shadow_shadowmap2dtexture)
4203                 GL_Clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
4204         else
4205                 GL_Clear(GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
4206         // render into a slightly restricted region so that the borders of the
4207         // shadowmap area fade away, rather than streaking across everything
4208         // outside the usable area
4209         GL_Scissor(viewport.x + r_shadow_shadowmapborder, viewport.y + r_shadow_shadowmapborder, viewport.width - 2*r_shadow_shadowmapborder, viewport.height - 2*r_shadow_shadowmapborder);
4210
4211 #if 0
4212         // debugging
4213         R_Mesh_ResetRenderTargets();
4214         R_SetupShader_ShowDepth();
4215         GL_ColorMask(1,1,1,1);
4216         GL_Clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, clearcolor, 1.0f, 0);
4217 #endif
4218
4219         for (i = 0;i < r_refdef.scene.numentities;i++)
4220         {
4221                 ent = r_refdef.scene.entities[i];
4222
4223                 // cast shadows from anything of the map (submodels are optional)
4224                 if (ent->model && ent->model->DrawShadowMap != NULL && (!ent->model->brush.submodel || r_shadows_castfrombmodels.integer) && (ent->flags & RENDER_SHADOW))
4225                 {
4226                         relativethrowdistance = r_shadows_throwdistance.value * Matrix4x4_ScaleFromMatrix(&ent->inversematrix);
4227                         Matrix4x4_Transform(&ent->inversematrix, shadoworigin, relativelightorigin);
4228                         Matrix4x4_Transform3x3(&ent->inversematrix, shadowdir, relativelightdirection);
4229                         Matrix4x4_Transform3x3(&ent->inversematrix, shadowforward, relativeforward);
4230                         Matrix4x4_Transform3x3(&ent->inversematrix, shadowright, relativeright);
4231                         relativeshadowmins[0] = relativelightorigin[0] - r_shadows_throwdistance.value * fabs(relativelightdirection[0]) - radius * (fabs(relativeforward[0]) + fabs(relativeright[0]));
4232                         relativeshadowmins[1] = relativelightorigin[1] - r_shadows_throwdistance.value * fabs(relativelightdirection[1]) - radius * (fabs(relativeforward[1]) + fabs(relativeright[1]));
4233                         relativeshadowmins[2] = relativelightorigin[2] - r_shadows_throwdistance.value * fabs(relativelightdirection[2]) - radius * (fabs(relativeforward[2]) + fabs(relativeright[2]));
4234                         relativeshadowmaxs[0] = relativelightorigin[0] + r_shadows_throwdistance.value * fabs(relativelightdirection[0]) + radius * (fabs(relativeforward[0]) + fabs(relativeright[0]));
4235                         relativeshadowmaxs[1] = relativelightorigin[1] + r_shadows_throwdistance.value * fabs(relativelightdirection[1]) + radius * (fabs(relativeforward[1]) + fabs(relativeright[1]));
4236                         relativeshadowmaxs[2] = relativelightorigin[2] + r_shadows_throwdistance.value * fabs(relativelightdirection[2]) + radius * (fabs(relativeforward[2]) + fabs(relativeright[2]));
4237                         RSurf_ActiveModelEntity(ent, false, false, false);
4238                         ent->model->DrawShadowMap(0, ent, relativelightorigin, relativelightdirection, relativethrowdistance, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, NULL, relativeshadowmins, relativeshadowmaxs);
4239                         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
4240                 }
4241         }
4242
4243 #if 0
4244         if (r_test.integer)
4245         {
4246                 unsigned char *rawpixels = Z_Malloc(viewport.width*viewport.height*4);
4247                 CHECKGLERROR
4248                 qglReadPixels(viewport.x, viewport.y, viewport.width, viewport.height, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, rawpixels);
4249                 CHECKGLERROR
4250                 Image_WriteTGABGRA("r_shadows_2.tga", viewport.width, viewport.height, rawpixels);
4251                 Cvar_SetValueQuick(&r_test, 0);
4252                 Z_Free(rawpixels);
4253         }
4254 #endif
4255
4256         R_Shadow_RenderMode_End();
4257
4258         Matrix4x4_Concat(&mvpmatrix, &r_refdef.view.viewport.projectmatrix, &r_refdef.view.viewport.viewmatrix);
4259         Matrix4x4_Invert_Full(&invmvpmatrix, &mvpmatrix);
4260         Matrix4x4_CreateScale3(&scalematrix, size, -size, 1);
4261         Matrix4x4_AdjustOrigin(&scalematrix, 0, size, -0.5f * bias);
4262         Matrix4x4_Concat(&texmatrix, &scalematrix, &shadowmatrix);
4263         Matrix4x4_Concat(&r_shadow_shadowmapmatrix, &texmatrix, &invmvpmatrix);
4264
4265         switch (vid.renderpath)
4266         {
4267         case RENDERPATH_GL11:
4268         case RENDERPATH_GL13:
4269         case RENDERPATH_GL20:
4270         case RENDERPATH_CGGL:
4271                 break;
4272         case RENDERPATH_D3D9:
4273         case RENDERPATH_D3D10:
4274         case RENDERPATH_D3D11:
4275 #ifdef OPENGL_ORIENTATION
4276                 r_shadow_shadowmapmatrix.m[0][0]        *= -1.0f;
4277                 r_shadow_shadowmapmatrix.m[0][1]        *= -1.0f;
4278                 r_shadow_shadowmapmatrix.m[0][2]        *= -1.0f;
4279                 r_shadow_shadowmapmatrix.m[0][3]        *= -1.0f;
4280 #else
4281                 r_shadow_shadowmapmatrix.m[0][0]        *= -1.0f;
4282                 r_shadow_shadowmapmatrix.m[1][0]        *= -1.0f;
4283                 r_shadow_shadowmapmatrix.m[2][0]        *= -1.0f;
4284                 r_shadow_shadowmapmatrix.m[3][0]        *= -1.0f;
4285 #endif
4286                 break;
4287         }
4288
4289         r_shadow_usingshadowmaportho = true;
4290         switch (r_shadow_shadowmode)
4291         {
4292         case R_SHADOW_SHADOWMODE_SHADOWMAP2D:
4293                 r_shadow_usingshadowmap2d = true;
4294                 break;
4295         default:
4296                 break;
4297         }
4298 }
4299
4300 void R_DrawModelShadows(void)
4301 {
4302         int i;
4303         float relativethrowdistance;
4304         entity_render_t *ent;
4305         vec3_t relativelightorigin;
4306         vec3_t relativelightdirection;
4307         vec3_t relativeshadowmins, relativeshadowmaxs;
4308         vec3_t tmp, shadowdir;
4309
4310         if (!r_refdef.scene.numentities || !vid.stencil || (r_shadow_shadowmode != R_SHADOW_SHADOWMODE_STENCIL && r_shadows.integer != 1))
4311                 return;
4312
4313         R_ResetViewRendering3D();
4314         //GL_Scissor(r_refdef.view.viewport.x, r_refdef.view.viewport.y, r_refdef.view.viewport.width, r_refdef.view.viewport.height);
4315         //GL_Scissor(r_refdef.view.x, vid.height - r_refdef.view.height - r_refdef.view.y, r_refdef.view.width, r_refdef.view.height);
4316         R_Shadow_RenderMode_Begin();
4317         R_Shadow_RenderMode_ActiveLight(NULL);
4318         r_shadow_lightscissor[0] = r_refdef.view.x;
4319         r_shadow_lightscissor[1] = vid.height - r_refdef.view.y - r_refdef.view.height;
4320         r_shadow_lightscissor[2] = r_refdef.view.width;
4321         r_shadow_lightscissor[3] = r_refdef.view.height;
4322         R_Shadow_RenderMode_StencilShadowVolumes(false);
4323
4324         // get shadow dir
4325         if (r_shadows.integer == 2)
4326         {
4327                 Math_atov(r_shadows_throwdirection.string, shadowdir);
4328                 VectorNormalize(shadowdir);
4329         }
4330
4331         R_Shadow_ClearStencil();
4332
4333         for (i = 0;i < r_refdef.scene.numentities;i++)
4334         {
4335                 ent = r_refdef.scene.entities[i];
4336
4337                 // cast shadows from anything of the map (submodels are optional)
4338                 if (ent->model && ent->model->DrawShadowVolume != NULL && (!ent->model->brush.submodel || r_shadows_castfrombmodels.integer) && (ent->flags & RENDER_SHADOW))
4339                 {
4340                         relativethrowdistance = r_shadows_throwdistance.value * Matrix4x4_ScaleFromMatrix(&ent->inversematrix);
4341                         VectorSet(relativeshadowmins, -relativethrowdistance, -relativethrowdistance, -relativethrowdistance);
4342                         VectorSet(relativeshadowmaxs, relativethrowdistance, relativethrowdistance, relativethrowdistance);
4343                         if (r_shadows.integer == 2) // 2: simpler mode, throw shadows always in same direction
4344                                 Matrix4x4_Transform3x3(&ent->inversematrix, shadowdir, relativelightdirection);
4345                         else
4346                         {
4347                                 if(ent->entitynumber != 0)
4348                                 {
4349                                         if(ent->entitynumber >= MAX_EDICTS) // csqc entity
4350                                         {
4351                                                 // FIXME handle this
4352                                                 VectorNegate(ent->modellight_lightdir, relativelightdirection);
4353                                         }
4354                                         else
4355                                         {
4356                                                 // networked entity - might be attached in some way (then we should use the parent's light direction, to not tear apart attached entities)
4357                                                 int entnum, entnum2, recursion;
4358                                                 entnum = entnum2 = ent->entitynumber;
4359                                                 for(recursion = 32; recursion > 0; --recursion)
4360                                                 {
4361                                                         entnum2 = cl.entities[entnum].state_current.tagentity;
4362                                                         if(entnum2 >= 1 && entnum2 < cl.num_entities && cl.entities_active[entnum2])
4363                                                                 entnum = entnum2;
4364                                                         else
4365                                                                 break;
4366                                                 }
4367                                                 if(recursion && recursion != 32) // if we followed a valid non-empty attachment chain
4368                                                 {
4369                                                         VectorNegate(cl.entities[entnum].render.modellight_lightdir, relativelightdirection);
4370                                                         // transform into modelspace of OUR entity
4371                                                         Matrix4x4_Transform3x3(&cl.entities[entnum].render.matrix, relativelightdirection, tmp);
4372                                                         Matrix4x4_Transform3x3(&ent->inversematrix, tmp, relativelightdirection);
4373                                                 }
4374                                                 else
4375                                                         VectorNegate(ent->modellight_lightdir, relativelightdirection);
4376                                         }
4377                                 }
4378                                 else
4379                                         VectorNegate(ent->modellight_lightdir, relativelightdirection);
4380                         }
4381
4382                         VectorScale(relativelightdirection, -relativethrowdistance, relativelightorigin);
4383                         RSurf_ActiveModelEntity(ent, false, false, false);
4384                         ent->model->DrawShadowVolume(ent, relativelightorigin, relativelightdirection, relativethrowdistance, ent->model->nummodelsurfaces, ent->model->sortedmodelsurfaces, relativeshadowmins, relativeshadowmaxs);
4385                         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
4386                 }
4387         }
4388
4389         // not really the right mode, but this will disable any silly stencil features
4390         R_Shadow_RenderMode_End();
4391
4392         // set up ortho view for rendering this pass
4393         //GL_Scissor(r_refdef.view.x, vid.height - r_refdef.view.height - r_refdef.view.y, r_refdef.view.width, r_refdef.view.height);
4394         //GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
4395         //GL_ScissorTest(true);
4396         //R_EntityMatrix(&identitymatrix);
4397         //R_Mesh_ResetTextureState();
4398         R_ResetViewRendering2D();
4399
4400         // set up a darkening blend on shadowed areas
4401         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
4402         //GL_DepthRange(0, 1);
4403         //GL_DepthTest(false);
4404         //GL_DepthMask(false);
4405         //GL_PolygonOffset(0, 0);CHECKGLERROR
4406         GL_Color(0, 0, 0, r_shadows_darken.value);
4407         //GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
4408         //GL_DepthFunc(GL_ALWAYS);
4409         R_SetStencil(true, 255, GL_KEEP, GL_KEEP, GL_KEEP, GL_NOTEQUAL, 128, 255);
4410
4411         // apply the blend to the shadowed areas
4412         R_Mesh_PrepareVertices_Generic_Arrays(4, r_screenvertex3f, NULL, NULL);
4413         R_SetupShader_Generic(NULL, NULL, GL_MODULATE, 1);
4414         R_Mesh_Draw(0, 4, 0, 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
4415
4416         // restore the viewport
4417         R_SetViewport(&r_refdef.view.viewport);
4418
4419         // restore other state to normal
4420         //R_Shadow_RenderMode_End();
4421 }
4422
4423 void R_BeginCoronaQuery(rtlight_t *rtlight, float scale, qboolean usequery)
4424 {
4425         float zdist;
4426         vec3_t centerorigin;
4427         float vertex3f[12];
4428         // if it's too close, skip it
4429         if (VectorLength(rtlight->currentcolor) < (1.0f / 256.0f))
4430                 return;
4431         zdist = (DotProduct(rtlight->shadoworigin, r_refdef.view.forward) - DotProduct(r_refdef.view.origin, r_refdef.view.forward));
4432         if (zdist < 32)
4433                 return;
4434         if (usequery && r_numqueries + 2 <= r_maxqueries)
4435         {
4436                 rtlight->corona_queryindex_allpixels = r_queries[r_numqueries++];
4437                 rtlight->corona_queryindex_visiblepixels = r_queries[r_numqueries++];
4438                 // we count potential samples in the middle of the screen, we count actual samples at the light location, this allows counting potential samples of off-screen lights
4439                 VectorMA(r_refdef.view.origin, zdist, r_refdef.view.forward, centerorigin);
4440
4441                 switch(vid.renderpath)
4442                 {
4443                 case RENDERPATH_GL20:
4444                 case RENDERPATH_GL13:
4445                 case RENDERPATH_GL11:
4446                 case RENDERPATH_CGGL:
4447                         CHECKGLERROR
4448                         // NOTE: GL_DEPTH_TEST must be enabled or ATI won't count samples, so use GL_DepthFunc instead
4449                         qglBeginQueryARB(GL_SAMPLES_PASSED_ARB, rtlight->corona_queryindex_allpixels);
4450                         GL_DepthFunc(GL_ALWAYS);
4451                         R_CalcSprite_Vertex3f(vertex3f, centerorigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale);
4452                         R_Mesh_PrepareVertices_Position_Arrays(4, vertex3f);
4453                         R_Mesh_Draw(0, 4, 0, 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
4454                         qglEndQueryARB(GL_SAMPLES_PASSED_ARB);
4455                         GL_DepthFunc(GL_LEQUAL);
4456                         qglBeginQueryARB(GL_SAMPLES_PASSED_ARB, rtlight->corona_queryindex_visiblepixels);
4457                         R_CalcSprite_Vertex3f(vertex3f, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale);
4458                         R_Mesh_PrepareVertices_Position_Arrays(4, vertex3f);
4459                         R_Mesh_Draw(0, 4, 0, 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
4460                         qglEndQueryARB(GL_SAMPLES_PASSED_ARB);
4461                         CHECKGLERROR
4462                         break;
4463                 case RENDERPATH_D3D9:
4464                         Con_DPrintf("FIXME D3D9 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4465                         break;
4466                 case RENDERPATH_D3D10:
4467                         Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4468                         break;
4469                 case RENDERPATH_D3D11:
4470                         Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4471                         break;
4472                 }
4473         }
4474         rtlight->corona_visibility = bound(0, (zdist - 32) / 32, 1);
4475 }
4476
4477 static float spritetexcoord2f[4*2] = {0, 1, 0, 0, 1, 0, 1, 1};
4478
4479 void R_DrawCorona(rtlight_t *rtlight, float cscale, float scale)
4480 {
4481         vec3_t color;
4482         GLint allpixels = 0, visiblepixels = 0;
4483         // now we have to check the query result
4484         if (rtlight->corona_queryindex_visiblepixels)
4485         {
4486                 switch(vid.renderpath)
4487                 {
4488                 case RENDERPATH_GL20:
4489                 case RENDERPATH_GL13:
4490                 case RENDERPATH_GL11:
4491                 case RENDERPATH_CGGL:
4492                         CHECKGLERROR
4493                         qglGetQueryObjectivARB(rtlight->corona_queryindex_visiblepixels, GL_QUERY_RESULT_ARB, &visiblepixels);
4494                         qglGetQueryObjectivARB(rtlight->corona_queryindex_allpixels, GL_QUERY_RESULT_ARB, &allpixels);
4495                         CHECKGLERROR
4496                         break;
4497                 case RENDERPATH_D3D9:
4498                         Con_DPrintf("FIXME D3D9 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4499                         break;
4500                 case RENDERPATH_D3D10:
4501                         Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4502                         break;
4503                 case RENDERPATH_D3D11:
4504                         Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4505                         break;
4506                 }
4507                 //Con_Printf("%i of %i pixels\n", (int)visiblepixels, (int)allpixels);
4508                 if (visiblepixels < 1 || allpixels < 1)
4509                         return;
4510                 rtlight->corona_visibility *= bound(0, (float)visiblepixels / (float)allpixels, 1);
4511                 cscale *= rtlight->corona_visibility;
4512         }
4513         else
4514         {
4515                 // FIXME: these traces should scan all render entities instead of cl.world
4516                 if (CL_TraceLine(r_refdef.view.origin, rtlight->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction < 1)
4517                         return;
4518         }
4519         VectorScale(rtlight->currentcolor, cscale, color);
4520         if (VectorLength(color) > (1.0f / 256.0f))
4521         {
4522                 float vertex3f[12];
4523                 qboolean negated = (color[0] + color[1] + color[2] < 0) && vid.support.ext_blend_subtract;
4524                 if(negated)
4525                 {
4526                         VectorNegate(color, color);
4527                         switch(vid.renderpath)
4528                         {
4529                         case RENDERPATH_GL11:
4530                         case RENDERPATH_GL13:
4531                         case RENDERPATH_GL20:
4532                         case RENDERPATH_CGGL:
4533                                 qglBlendEquationEXT(GL_FUNC_REVERSE_SUBTRACT_EXT);
4534                                 break;
4535                         case RENDERPATH_D3D9:
4536 #ifdef SUPPORTD3D
4537                                 IDirect3DDevice9_SetRenderState(vid_d3d9dev, D3DRS_BLENDOP, D3DBLENDOP_SUBTRACT);
4538 #endif
4539                                 break;
4540                         case RENDERPATH_D3D10:
4541                                 Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4542                                 break;
4543                         case RENDERPATH_D3D11:
4544                                 Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4545                                 break;
4546                         }
4547                 }
4548                 R_CalcSprite_Vertex3f(vertex3f, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale);
4549                 RSurf_ActiveCustomEntity(&identitymatrix, &identitymatrix, RENDER_NODEPTHTEST, 0, color[0], color[1], color[2], 1, 4, vertex3f, spritetexcoord2f, NULL, NULL, NULL, NULL, 2, polygonelement3i, polygonelement3s, false, false);
4550                 R_DrawCustomSurface(r_shadow_lightcorona, &identitymatrix, MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE, 0, 4, 0, 2, false, false);
4551                 if(negated)
4552                 {
4553                         switch(vid.renderpath)
4554                         {
4555                         case RENDERPATH_GL11:
4556                         case RENDERPATH_GL13:
4557                         case RENDERPATH_GL20:
4558                         case RENDERPATH_CGGL:
4559                                 qglBlendEquationEXT(GL_FUNC_ADD_EXT);
4560                                 break;
4561                         case RENDERPATH_D3D9:
4562 #ifdef SUPPORTD3D
4563                                 IDirect3DDevice9_SetRenderState(vid_d3d9dev, D3DRS_BLENDOP, D3DBLENDOP_ADD);
4564 #endif
4565                                 break;
4566                         case RENDERPATH_D3D10:
4567                                 Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4568                                 break;
4569                         case RENDERPATH_D3D11:
4570                                 Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4571                                 break;
4572                         }
4573                 }
4574         }
4575 }
4576
4577 void R_Shadow_DrawCoronas(void)
4578 {
4579         int i, flag;
4580         qboolean usequery = false;
4581         size_t lightindex;
4582         dlight_t *light;
4583         rtlight_t *rtlight;
4584         size_t range;
4585         if (r_coronas.value < (1.0f / 256.0f) && !gl_flashblend.integer)
4586                 return;
4587         if (r_waterstate.renderingscene)
4588                 return;
4589         flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
4590         R_EntityMatrix(&identitymatrix);
4591
4592         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4593
4594         // check occlusion of coronas
4595         // use GL_ARB_occlusion_query if available
4596         // otherwise use raytraces
4597         r_numqueries = 0;
4598         switch (vid.renderpath)
4599         {
4600         case RENDERPATH_GL11:
4601         case RENDERPATH_GL13:
4602         case RENDERPATH_GL20:
4603         case RENDERPATH_CGGL:
4604                 usequery = vid.support.arb_occlusion_query && r_coronas_occlusionquery.integer;
4605                 if (usequery)
4606                 {
4607                         GL_ColorMask(0,0,0,0);
4608                         if (r_maxqueries < (range + r_refdef.scene.numlights) * 2)
4609                         if (r_maxqueries < MAX_OCCLUSION_QUERIES)
4610                         {
4611                                 i = r_maxqueries;
4612                                 r_maxqueries = (range + r_refdef.scene.numlights) * 4;
4613                                 r_maxqueries = min(r_maxqueries, MAX_OCCLUSION_QUERIES);
4614                                 CHECKGLERROR
4615                                 qglGenQueriesARB(r_maxqueries - i, r_queries + i);
4616                                 CHECKGLERROR
4617                         }
4618                         RSurf_ActiveWorldEntity();
4619                         GL_BlendFunc(GL_ONE, GL_ZERO);
4620                         GL_CullFace(GL_NONE);
4621                         GL_DepthMask(false);
4622                         GL_DepthRange(0, 1);
4623                         GL_PolygonOffset(0, 0);
4624                         GL_DepthTest(true);
4625                         R_Mesh_ResetTextureState();
4626                         R_SetupShader_Generic(NULL, NULL, GL_MODULATE, 1);
4627                 }
4628                 break;
4629         case RENDERPATH_D3D9:
4630                 usequery = false;
4631                 //Con_DPrintf("FIXME D3D9 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4632                 break;
4633         case RENDERPATH_D3D10:
4634                 Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4635                 break;
4636         case RENDERPATH_D3D11:
4637                 Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
4638                 break;
4639         }
4640         for (lightindex = 0;lightindex < range;lightindex++)
4641         {
4642                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4643                 if (!light)
4644                         continue;
4645                 rtlight = &light->rtlight;
4646                 rtlight->corona_visibility = 0;
4647                 rtlight->corona_queryindex_visiblepixels = 0;
4648                 rtlight->corona_queryindex_allpixels = 0;
4649                 if (!(rtlight->flags & flag))
4650                         continue;
4651                 if (rtlight->corona <= 0)
4652                         continue;
4653                 if (r_shadow_debuglight.integer >= 0 && r_shadow_debuglight.integer != (int)lightindex)
4654                         continue;
4655                 R_BeginCoronaQuery(rtlight, rtlight->radius * rtlight->coronasizescale * r_coronas_occlusionsizescale.value, usequery);
4656         }
4657         for (i = 0;i < r_refdef.scene.numlights;i++)
4658         {
4659                 rtlight = r_refdef.scene.lights[i];
4660                 rtlight->corona_visibility = 0;
4661                 rtlight->corona_queryindex_visiblepixels = 0;
4662                 rtlight->corona_queryindex_allpixels = 0;
4663                 if (!(rtlight->flags & flag))
4664                         continue;
4665                 if (rtlight->corona <= 0)
4666                         continue;
4667                 R_BeginCoronaQuery(rtlight, rtlight->radius * rtlight->coronasizescale * r_coronas_occlusionsizescale.value, usequery);
4668         }
4669         if (usequery)
4670                 GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
4671
4672         // now draw the coronas using the query data for intensity info
4673         for (lightindex = 0;lightindex < range;lightindex++)
4674         {
4675                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4676                 if (!light)
4677                         continue;
4678                 rtlight = &light->rtlight;
4679                 if (rtlight->corona_visibility <= 0)
4680                         continue;
4681                 R_DrawCorona(rtlight, rtlight->corona * r_coronas.value * 0.25f, rtlight->radius * rtlight->coronasizescale);
4682         }
4683         for (i = 0;i < r_refdef.scene.numlights;i++)
4684         {
4685                 rtlight = r_refdef.scene.lights[i];
4686                 if (rtlight->corona_visibility <= 0)
4687                         continue;
4688                 if (gl_flashblend.integer)
4689                         R_DrawCorona(rtlight, rtlight->corona, rtlight->radius * rtlight->coronasizescale * 2.0f);
4690                 else
4691                         R_DrawCorona(rtlight, rtlight->corona * r_coronas.value * 0.25f, rtlight->radius * rtlight->coronasizescale);
4692         }
4693 }
4694
4695
4696
4697 dlight_t *R_Shadow_NewWorldLight(void)
4698 {
4699         return (dlight_t *)Mem_ExpandableArray_AllocRecord(&r_shadow_worldlightsarray);
4700 }
4701
4702 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)
4703 {
4704         matrix4x4_t matrix;
4705         // validate parameters
4706         if (style < 0 || style >= MAX_LIGHTSTYLES)
4707         {
4708                 Con_Printf("R_Shadow_NewWorldLight: invalid light style number %i, must be >= 0 and < %i\n", light->style, MAX_LIGHTSTYLES);
4709                 style = 0;
4710         }
4711         if (!cubemapname)
4712                 cubemapname = "";
4713
4714         // copy to light properties
4715         VectorCopy(origin, light->origin);
4716         light->angles[0] = angles[0] - 360 * floor(angles[0] / 360);
4717         light->angles[1] = angles[1] - 360 * floor(angles[1] / 360);
4718         light->angles[2] = angles[2] - 360 * floor(angles[2] / 360);
4719         /*
4720         light->color[0] = max(color[0], 0);
4721         light->color[1] = max(color[1], 0);
4722         light->color[2] = max(color[2], 0);
4723         */
4724         light->color[0] = color[0];
4725         light->color[1] = color[1];
4726         light->color[2] = color[2];
4727         light->radius = max(radius, 0);
4728         light->style = style;
4729         light->shadow = shadowenable;
4730         light->corona = corona;
4731         strlcpy(light->cubemapname, cubemapname, sizeof(light->cubemapname));
4732         light->coronasizescale = coronasizescale;
4733         light->ambientscale = ambientscale;
4734         light->diffusescale = diffusescale;
4735         light->specularscale = specularscale;
4736         light->flags = flags;
4737
4738         // update renderable light data
4739         Matrix4x4_CreateFromQuakeEntity(&matrix, light->origin[0], light->origin[1], light->origin[2], light->angles[0], light->angles[1], light->angles[2], light->radius);
4740         R_RTLight_Update(&light->rtlight, true, &matrix, light->color, light->style, light->cubemapname[0] ? light->cubemapname : NULL, light->shadow, light->corona, light->coronasizescale, light->ambientscale, light->diffusescale, light->specularscale, light->flags);
4741 }
4742
4743 void R_Shadow_FreeWorldLight(dlight_t *light)
4744 {
4745         if (r_shadow_selectedlight == light)
4746                 r_shadow_selectedlight = NULL;
4747         R_RTLight_Uncompile(&light->rtlight);
4748         Mem_ExpandableArray_FreeRecord(&r_shadow_worldlightsarray, light);
4749 }
4750
4751 void R_Shadow_ClearWorldLights(void)
4752 {
4753         size_t lightindex;
4754         dlight_t *light;
4755         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4756         for (lightindex = 0;lightindex < range;lightindex++)
4757         {
4758                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4759                 if (light)
4760                         R_Shadow_FreeWorldLight(light);
4761         }
4762         r_shadow_selectedlight = NULL;
4763 }
4764
4765 void R_Shadow_SelectLight(dlight_t *light)
4766 {
4767         if (r_shadow_selectedlight)
4768                 r_shadow_selectedlight->selected = false;
4769         r_shadow_selectedlight = light;
4770         if (r_shadow_selectedlight)
4771                 r_shadow_selectedlight->selected = true;
4772 }
4773
4774 void R_Shadow_DrawCursor_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
4775 {
4776         // this is never batched (there can be only one)
4777         float vertex3f[12];
4778         R_CalcSprite_Vertex3f(vertex3f, r_editlights_cursorlocation, r_refdef.view.right, r_refdef.view.up, EDLIGHTSPRSIZE, -EDLIGHTSPRSIZE, -EDLIGHTSPRSIZE, EDLIGHTSPRSIZE);
4779         RSurf_ActiveCustomEntity(&identitymatrix, &identitymatrix, 0, 0, 1, 1, 1, 1, 4, vertex3f, spritetexcoord2f, NULL, NULL, NULL, NULL, 2, polygonelement3i, polygonelement3s, false, false);
4780         R_DrawCustomSurface(r_editlights_sprcursor, &identitymatrix, MATERIALFLAG_NODEPTHTEST | MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE, 0, 4, 0, 2, false, false);
4781 }
4782
4783 void R_Shadow_DrawLightSprite_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
4784 {
4785         float intensity;
4786         float s;
4787         vec3_t spritecolor;
4788         skinframe_t *skinframe;
4789         float vertex3f[12];
4790
4791         // this is never batched (due to the ent parameter changing every time)
4792         // so numsurfaces == 1 and surfacelist[0] == lightnumber
4793         const dlight_t *light = (dlight_t *)ent;
4794         s = EDLIGHTSPRSIZE;
4795
4796         R_CalcSprite_Vertex3f(vertex3f, light->origin, r_refdef.view.right, r_refdef.view.up, s, -s, -s, s);
4797
4798         intensity = 0.5f;
4799         VectorScale(light->color, intensity, spritecolor);
4800         if (VectorLength(spritecolor) < 0.1732f)
4801                 VectorSet(spritecolor, 0.1f, 0.1f, 0.1f);
4802         if (VectorLength(spritecolor) > 1.0f)
4803                 VectorNormalize(spritecolor);
4804
4805         // draw light sprite
4806         if (light->cubemapname[0] && !light->shadow)
4807                 skinframe = r_editlights_sprcubemapnoshadowlight;
4808         else if (light->cubemapname[0])
4809                 skinframe = r_editlights_sprcubemaplight;
4810         else if (!light->shadow)
4811                 skinframe = r_editlights_sprnoshadowlight;
4812         else
4813                 skinframe = r_editlights_sprlight;
4814
4815         RSurf_ActiveCustomEntity(&identitymatrix, &identitymatrix, 0, 0, spritecolor[0], spritecolor[1], spritecolor[2], 1, 4, vertex3f, spritetexcoord2f, NULL, NULL, NULL, NULL, 2, polygonelement3i, polygonelement3s, false, false);
4816         R_DrawCustomSurface(skinframe, &identitymatrix, MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE, 0, 4, 0, 2, false, false);
4817
4818         // draw selection sprite if light is selected
4819         if (light->selected)
4820         {
4821                 RSurf_ActiveCustomEntity(&identitymatrix, &identitymatrix, 0, 0, 1, 1, 1, 1, 4, vertex3f, spritetexcoord2f, NULL, NULL, NULL, NULL, 2, polygonelement3i, polygonelement3s, false, false);
4822                 R_DrawCustomSurface(r_editlights_sprselection, &identitymatrix, MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE, 0, 4, 0, 2, false, false);
4823                 // VorteX todo: add normalmode/realtime mode light overlay sprites?
4824         }
4825 }
4826
4827 void R_Shadow_DrawLightSprites(void)
4828 {
4829         size_t lightindex;
4830         dlight_t *light;
4831         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4832         for (lightindex = 0;lightindex < range;lightindex++)
4833         {
4834                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4835                 if (light)
4836                         R_MeshQueue_AddTransparent(light->origin, R_Shadow_DrawLightSprite_TransparentCallback, (entity_render_t *)light, 5, &light->rtlight);
4837         }
4838         if (!r_editlights_lockcursor)
4839                 R_MeshQueue_AddTransparent(r_editlights_cursorlocation, R_Shadow_DrawCursor_TransparentCallback, NULL, 0, NULL);
4840 }
4841
4842 int R_Shadow_GetRTLightInfo(unsigned int lightindex, float *origin, float *radius, float *color)
4843 {
4844         unsigned int range;
4845         dlight_t *light;
4846         rtlight_t *rtlight;
4847         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray);
4848         if (lightindex >= range)
4849                 return -1;
4850         light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4851         if (!light)
4852                 return 0;
4853         rtlight = &light->rtlight;
4854         //if (!(rtlight->flags & flag))
4855         //      return 0;
4856         VectorCopy(rtlight->shadoworigin, origin);
4857         *radius = rtlight->radius;
4858         VectorCopy(rtlight->color, color);
4859         return 1;
4860 }
4861
4862 void R_Shadow_SelectLightInView(void)
4863 {
4864         float bestrating, rating, temp[3];
4865         dlight_t *best;
4866         size_t lightindex;
4867         dlight_t *light;
4868         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
4869         best = NULL;
4870         bestrating = 0;
4871
4872         if (r_editlights_lockcursor)
4873                 return;
4874         for (lightindex = 0;lightindex < range;lightindex++)
4875         {
4876                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
4877                 if (!light)
4878                         continue;
4879                 VectorSubtract(light->origin, r_refdef.view.origin, temp);
4880                 rating = (DotProduct(temp, r_refdef.view.forward) / sqrt(DotProduct(temp, temp)));
4881                 if (rating >= 0.95)
4882                 {
4883                         rating /= (1 + 0.0625f * sqrt(DotProduct(temp, temp)));
4884                         if (bestrating < rating && CL_TraceLine(light->origin, r_refdef.view.origin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction == 1.0f)
4885                         {
4886                                 bestrating = rating;
4887                                 best = light;
4888                         }
4889                 }
4890         }
4891         R_Shadow_SelectLight(best);
4892 }
4893
4894 void R_Shadow_LoadWorldLights(void)
4895 {
4896         int n, a, style, shadow, flags;
4897         char tempchar, *lightsstring, *s, *t, name[MAX_QPATH], cubemapname[MAX_QPATH];
4898         float origin[3], radius, color[3], angles[3], corona, coronasizescale, ambientscale, diffusescale, specularscale;
4899         if (cl.worldmodel == NULL)
4900         {
4901                 Con_Print("No map loaded.\n");
4902                 return;
4903         }
4904         dpsnprintf(name, sizeof(name), "%s.rtlights", cl.worldnamenoextension);
4905         lightsstring = (char *)FS_LoadFile(name, tempmempool, false, NULL);
4906         if (lightsstring)
4907         {
4908                 s = lightsstring;
4909                 n = 0;
4910                 while (*s)
4911                 {
4912                         t = s;
4913                         /*
4914                         shadow = true;
4915                         for (;COM_Parse(t, true) && strcmp(
4916                         if (COM_Parse(t, true))
4917                         {
4918                                 if (com_token[0] == '!')
4919                                 {
4920                                         shadow = false;
4921                                         origin[0] = atof(com_token+1);
4922                                 }
4923                                 else
4924                                         origin[0] = atof(com_token);
4925                                 if (Com_Parse(t
4926                         }
4927                         */
4928                         t = s;
4929                         while (*s && *s != '\n' && *s != '\r')
4930                                 s++;
4931                         if (!*s)
4932                                 break;
4933                         tempchar = *s;
4934                         shadow = true;
4935                         // check for modifier flags
4936                         if (*t == '!')
4937                         {
4938                                 shadow = false;
4939                                 t++;
4940                         }
4941                         *s = 0;
4942 #if _MSC_VER >= 1400
4943 #define sscanf sscanf_s
4944 #endif
4945                         cubemapname[sizeof(cubemapname)-1] = 0;
4946 #if MAX_QPATH != 128
4947 #error update this code if MAX_QPATH changes
4948 #endif
4949                         a = sscanf(t, "%f %f %f %f %f %f %f %d %127s %f %f %f %f %f %f %f %f %i", &origin[0], &origin[1], &origin[2], &radius, &color[0], &color[1], &color[2], &style, cubemapname
4950 #if _MSC_VER >= 1400
4951 , sizeof(cubemapname)
4952 #endif
4953 , &corona, &angles[0], &angles[1], &angles[2], &coronasizescale, &ambientscale, &diffusescale, &specularscale, &flags);
4954                         *s = tempchar;
4955                         if (a < 18)
4956                                 flags = LIGHTFLAG_REALTIMEMODE;
4957                         if (a < 17)
4958                                 specularscale = 1;
4959                         if (a < 16)
4960                                 diffusescale = 1;
4961                         if (a < 15)
4962                                 ambientscale = 0;
4963                         if (a < 14)
4964                                 coronasizescale = 0.25f;
4965                         if (a < 13)
4966                                 VectorClear(angles);
4967                         if (a < 10)
4968                                 corona = 0;
4969                         if (a < 9 || !strcmp(cubemapname, "\"\""))
4970                                 cubemapname[0] = 0;
4971                         // remove quotes on cubemapname
4972                         if (cubemapname[0] == '"' && cubemapname[strlen(cubemapname) - 1] == '"')
4973                         {
4974                                 size_t namelen;
4975                                 namelen = strlen(cubemapname) - 2;
4976                                 memmove(cubemapname, cubemapname + 1, namelen);
4977                                 cubemapname[namelen] = '\0';
4978                         }
4979                         if (a < 8)
4980                         {
4981                                 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);
4982                                 break;
4983                         }
4984                         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, angles, color, radius, corona, style, shadow, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
4985                         if (*s == '\r')
4986                                 s++;
4987                         if (*s == '\n')
4988                                 s++;
4989                         n++;
4990                 }
4991                 if (*s)
4992                         Con_Printf("invalid rtlights file \"%s\"\n", name);
4993                 Mem_Free(lightsstring);
4994         }
4995 }
4996
4997 void R_Shadow_SaveWorldLights(void)
4998 {
4999         size_t lightindex;
5000         dlight_t *light;
5001         size_t bufchars, bufmaxchars;
5002         char *buf, *oldbuf;
5003         char name[MAX_QPATH];
5004         char line[MAX_INPUTLINE];
5005         size_t range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked, assuming the dpsnprintf mess doesn't screw it up...
5006         // I hate lines which are 3 times my screen size :( --blub
5007         if (!range)
5008                 return;
5009         if (cl.worldmodel == NULL)
5010         {
5011                 Con_Print("No map loaded.\n");
5012                 return;
5013         }
5014         dpsnprintf(name, sizeof(name), "%s.rtlights", cl.worldnamenoextension);
5015         bufchars = bufmaxchars = 0;
5016         buf = NULL;
5017         for (lightindex = 0;lightindex < range;lightindex++)
5018         {
5019                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5020                 if (!light)
5021                         continue;
5022                 if (light->coronasizescale != 0.25f || light->ambientscale != 0 || light->diffusescale != 1 || light->specularscale != 1 || light->flags != LIGHTFLAG_REALTIMEMODE)
5023                         dpsnprintf(line, sizeof(line), "%s%f %f %f %f %f %f %f %d \"%s\" %f %f %f %f %f %f %f %f %i\n", light->shadow ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->radius, light->color[0], light->color[1], light->color[2], light->style, light->cubemapname, light->corona, light->angles[0], light->angles[1], light->angles[2], light->coronasizescale, light->ambientscale, light->diffusescale, light->specularscale, light->flags);
5024                 else if (light->cubemapname[0] || light->corona || light->angles[0] || light->angles[1] || light->angles[2])
5025                         dpsnprintf(line, sizeof(line), "%s%f %f %f %f %f %f %f %d \"%s\" %f %f %f %f\n", light->shadow ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->radius, light->color[0], light->color[1], light->color[2], light->style, light->cubemapname, light->corona, light->angles[0], light->angles[1], light->angles[2]);
5026                 else
5027                         dpsnprintf(line, sizeof(line), "%s%f %f %f %f %f %f %f %d\n", light->shadow ? "" : "!", light->origin[0], light->origin[1], light->origin[2], light->radius, light->color[0], light->color[1], light->color[2], light->style);
5028                 if (bufchars + strlen(line) > bufmaxchars)
5029                 {
5030                         bufmaxchars = bufchars + strlen(line) + 2048;
5031                         oldbuf = buf;
5032                         buf = (char *)Mem_Alloc(tempmempool, bufmaxchars);
5033                         if (oldbuf)
5034                         {
5035                                 if (bufchars)
5036                                         memcpy(buf, oldbuf, bufchars);
5037                                 Mem_Free(oldbuf);
5038                         }
5039                 }
5040                 if (strlen(line))
5041                 {
5042                         memcpy(buf + bufchars, line, strlen(line));
5043                         bufchars += strlen(line);
5044                 }
5045         }
5046         if (bufchars)
5047                 FS_WriteFile(name, buf, (fs_offset_t)bufchars);
5048         if (buf)
5049                 Mem_Free(buf);
5050 }
5051
5052 void R_Shadow_LoadLightsFile(void)
5053 {
5054         int n, a, style;
5055         char tempchar, *lightsstring, *s, *t, name[MAX_QPATH];
5056         float origin[3], radius, color[3], subtract, spotdir[3], spotcone, falloff, distbias;
5057         if (cl.worldmodel == NULL)
5058         {
5059                 Con_Print("No map loaded.\n");
5060                 return;
5061         }
5062         dpsnprintf(name, sizeof(name), "%s.lights", cl.worldnamenoextension);
5063         lightsstring = (char *)FS_LoadFile(name, tempmempool, false, NULL);
5064         if (lightsstring)
5065         {
5066                 s = lightsstring;
5067                 n = 0;
5068                 while (*s)
5069                 {
5070                         t = s;
5071                         while (*s && *s != '\n' && *s != '\r')
5072                                 s++;
5073                         if (!*s)
5074                                 break;
5075                         tempchar = *s;
5076                         *s = 0;
5077                         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);
5078                         *s = tempchar;
5079                         if (a < 14)
5080                         {
5081                                 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);
5082                                 break;
5083                         }
5084                         radius = sqrt(DotProduct(color, color) / (falloff * falloff * 8192.0f * 8192.0f));
5085                         radius = bound(15, radius, 4096);
5086                         VectorScale(color, (2.0f / (8388608.0f)), color);
5087                         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, vec3_origin, color, radius, 0, style, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
5088                         if (*s == '\r')
5089                                 s++;
5090                         if (*s == '\n')
5091                                 s++;
5092                         n++;
5093                 }
5094                 if (*s)
5095                         Con_Printf("invalid lights file \"%s\"\n", name);
5096                 Mem_Free(lightsstring);
5097         }
5098 }
5099
5100 // tyrlite/hmap2 light types in the delay field
5101 typedef enum lighttype_e {LIGHTTYPE_MINUSX, LIGHTTYPE_RECIPX, LIGHTTYPE_RECIPXX, LIGHTTYPE_NONE, LIGHTTYPE_SUN, LIGHTTYPE_MINUSXX} lighttype_t;
5102
5103 void R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite(void)
5104 {
5105         int entnum;
5106         int style;
5107         int islight;
5108         int skin;
5109         int pflags;
5110         //int effects;
5111         int type;
5112         int n;
5113         char *entfiledata;
5114         const char *data;
5115         float origin[3], angles[3], radius, color[3], light[4], fadescale, lightscale, originhack[3], overridecolor[3], vec[4];
5116         char key[256], value[MAX_INPUTLINE];
5117
5118         if (cl.worldmodel == NULL)
5119         {
5120                 Con_Print("No map loaded.\n");
5121                 return;
5122         }
5123         // try to load a .ent file first
5124         dpsnprintf(key, sizeof(key), "%s.ent", cl.worldnamenoextension);
5125         data = entfiledata = (char *)FS_LoadFile(key, tempmempool, true, NULL);
5126         // and if that is not found, fall back to the bsp file entity string
5127         if (!data)
5128                 data = cl.worldmodel->brush.entities;
5129         if (!data)
5130                 return;
5131         for (entnum = 0;COM_ParseToken_Simple(&data, false, false) && com_token[0] == '{';entnum++)
5132         {
5133                 type = LIGHTTYPE_MINUSX;
5134                 origin[0] = origin[1] = origin[2] = 0;
5135                 originhack[0] = originhack[1] = originhack[2] = 0;
5136                 angles[0] = angles[1] = angles[2] = 0;
5137                 color[0] = color[1] = color[2] = 1;
5138                 light[0] = light[1] = light[2] = 1;light[3] = 300;
5139                 overridecolor[0] = overridecolor[1] = overridecolor[2] = 1;
5140                 fadescale = 1;
5141                 lightscale = 1;
5142                 style = 0;
5143                 skin = 0;
5144                 pflags = 0;
5145                 //effects = 0;
5146                 islight = false;
5147                 while (1)
5148                 {
5149                         if (!COM_ParseToken_Simple(&data, false, false))
5150                                 break; // error
5151                         if (com_token[0] == '}')
5152                                 break; // end of entity
5153                         if (com_token[0] == '_')
5154                                 strlcpy(key, com_token + 1, sizeof(key));
5155                         else
5156                                 strlcpy(key, com_token, sizeof(key));
5157                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
5158                                 key[strlen(key)-1] = 0;
5159                         if (!COM_ParseToken_Simple(&data, false, false))
5160                                 break; // error
5161                         strlcpy(value, com_token, sizeof(value));
5162
5163                         // now that we have the key pair worked out...
5164                         if (!strcmp("light", key))
5165                         {
5166                                 n = sscanf(value, "%f %f %f %f", &vec[0], &vec[1], &vec[2], &vec[3]);
5167                                 if (n == 1)
5168                                 {
5169                                         // quake
5170                                         light[0] = vec[0] * (1.0f / 256.0f);
5171                                         light[1] = vec[0] * (1.0f / 256.0f);
5172                                         light[2] = vec[0] * (1.0f / 256.0f);
5173                                         light[3] = vec[0];
5174                                 }
5175                                 else if (n == 4)
5176                                 {
5177                                         // halflife
5178                                         light[0] = vec[0] * (1.0f / 255.0f);
5179                                         light[1] = vec[1] * (1.0f / 255.0f);
5180                                         light[2] = vec[2] * (1.0f / 255.0f);
5181                                         light[3] = vec[3];
5182                                 }
5183                         }
5184                         else if (!strcmp("delay", key))
5185                                 type = atoi(value);
5186                         else if (!strcmp("origin", key))
5187                                 sscanf(value, "%f %f %f", &origin[0], &origin[1], &origin[2]);
5188                         else if (!strcmp("angle", key))
5189                                 angles[0] = 0, angles[1] = atof(value), angles[2] = 0;
5190                         else if (!strcmp("angles", key))
5191                                 sscanf(value, "%f %f %f", &angles[0], &angles[1], &angles[2]);
5192                         else if (!strcmp("color", key))
5193                                 sscanf(value, "%f %f %f", &color[0], &color[1], &color[2]);
5194                         else if (!strcmp("wait", key))
5195                                 fadescale = atof(value);
5196                         else if (!strcmp("classname", key))
5197                         {
5198                                 if (!strncmp(value, "light", 5))
5199                                 {
5200                                         islight = true;
5201                                         if (!strcmp(value, "light_fluoro"))
5202                                         {
5203                                                 originhack[0] = 0;
5204                                                 originhack[1] = 0;
5205                                                 originhack[2] = 0;
5206                                                 overridecolor[0] = 1;
5207                                                 overridecolor[1] = 1;
5208                                                 overridecolor[2] = 1;
5209                                         }
5210                                         if (!strcmp(value, "light_fluorospark"))
5211                                         {
5212                                                 originhack[0] = 0;
5213                                                 originhack[1] = 0;
5214                                                 originhack[2] = 0;
5215                                                 overridecolor[0] = 1;
5216                                                 overridecolor[1] = 1;
5217                                                 overridecolor[2] = 1;
5218                                         }
5219                                         if (!strcmp(value, "light_globe"))
5220                                         {
5221                                                 originhack[0] = 0;
5222                                                 originhack[1] = 0;
5223                                                 originhack[2] = 0;
5224                                                 overridecolor[0] = 1;
5225                                                 overridecolor[1] = 0.8;
5226                                                 overridecolor[2] = 0.4;
5227                                         }
5228                                         if (!strcmp(value, "light_flame_large_yellow"))
5229                                         {
5230                                                 originhack[0] = 0;
5231                                                 originhack[1] = 0;
5232                                                 originhack[2] = 0;
5233                                                 overridecolor[0] = 1;
5234                                                 overridecolor[1] = 0.5;
5235                                                 overridecolor[2] = 0.1;
5236                                         }
5237                                         if (!strcmp(value, "light_flame_small_yellow"))
5238                                         {
5239                                                 originhack[0] = 0;
5240                                                 originhack[1] = 0;
5241                                                 originhack[2] = 0;
5242                                                 overridecolor[0] = 1;
5243                                                 overridecolor[1] = 0.5;
5244                                                 overridecolor[2] = 0.1;
5245                                         }
5246                                         if (!strcmp(value, "light_torch_small_white"))
5247                                         {
5248                                                 originhack[0] = 0;
5249                                                 originhack[1] = 0;
5250                                                 originhack[2] = 0;
5251                                                 overridecolor[0] = 1;
5252                                                 overridecolor[1] = 0.5;
5253                                                 overridecolor[2] = 0.1;
5254                                         }
5255                                         if (!strcmp(value, "light_torch_small_walltorch"))
5256                                         {
5257                                                 originhack[0] = 0;
5258                                                 originhack[1] = 0;
5259                                                 originhack[2] = 0;
5260                                                 overridecolor[0] = 1;
5261                                                 overridecolor[1] = 0.5;
5262                                                 overridecolor[2] = 0.1;
5263                                         }
5264                                 }
5265                         }
5266                         else if (!strcmp("style", key))
5267                                 style = atoi(value);
5268                         else if (!strcmp("skin", key))
5269                                 skin = (int)atof(value);
5270                         else if (!strcmp("pflags", key))
5271                                 pflags = (int)atof(value);
5272                         //else if (!strcmp("effects", key))
5273                         //      effects = (int)atof(value);
5274                         else if (cl.worldmodel->type == mod_brushq3)
5275                         {
5276                                 if (!strcmp("scale", key))
5277                                         lightscale = atof(value);
5278                                 if (!strcmp("fade", key))
5279                                         fadescale = atof(value);
5280                         }
5281                 }
5282                 if (!islight)
5283                         continue;
5284                 if (lightscale <= 0)
5285                         lightscale = 1;
5286                 if (fadescale <= 0)
5287                         fadescale = 1;
5288                 if (color[0] == color[1] && color[0] == color[2])
5289                 {
5290                         color[0] *= overridecolor[0];
5291                         color[1] *= overridecolor[1];
5292                         color[2] *= overridecolor[2];
5293                 }
5294                 radius = light[3] * r_editlights_quakelightsizescale.value * lightscale / fadescale;
5295                 color[0] = color[0] * light[0];
5296                 color[1] = color[1] * light[1];
5297                 color[2] = color[2] * light[2];
5298                 switch (type)
5299                 {
5300                 case LIGHTTYPE_MINUSX:
5301                         break;
5302                 case LIGHTTYPE_RECIPX:
5303                         radius *= 2;
5304                         VectorScale(color, (1.0f / 16.0f), color);
5305                         break;
5306                 case LIGHTTYPE_RECIPXX:
5307                         radius *= 2;
5308                         VectorScale(color, (1.0f / 16.0f), color);
5309                         break;
5310                 default:
5311                 case LIGHTTYPE_NONE:
5312                         break;
5313                 case LIGHTTYPE_SUN:
5314                         break;
5315                 case LIGHTTYPE_MINUSXX:
5316                         break;
5317                 }
5318                 VectorAdd(origin, originhack, origin);
5319                 if (radius >= 1)
5320                         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);
5321         }
5322         if (entfiledata)
5323                 Mem_Free(entfiledata);
5324 }
5325
5326
5327 void R_Shadow_SetCursorLocationForView(void)
5328 {
5329         vec_t dist, push;
5330         vec3_t dest, endpos;
5331         trace_t trace;
5332         VectorMA(r_refdef.view.origin, r_editlights_cursordistance.value, r_refdef.view.forward, dest);
5333         trace = CL_TraceLine(r_refdef.view.origin, dest, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false);
5334         if (trace.fraction < 1)
5335         {
5336                 dist = trace.fraction * r_editlights_cursordistance.value;
5337                 push = r_editlights_cursorpushback.value;
5338                 if (push > dist)
5339                         push = dist;
5340                 push = -push;
5341                 VectorMA(trace.endpos, push, r_refdef.view.forward, endpos);
5342                 VectorMA(endpos, r_editlights_cursorpushoff.value, trace.plane.normal, endpos);
5343         }
5344         else
5345         {
5346                 VectorClear( endpos );
5347         }
5348         r_editlights_cursorlocation[0] = floor(endpos[0] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
5349         r_editlights_cursorlocation[1] = floor(endpos[1] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
5350         r_editlights_cursorlocation[2] = floor(endpos[2] / r_editlights_cursorgrid.value + 0.5f) * r_editlights_cursorgrid.value;
5351 }
5352
5353 void R_Shadow_UpdateWorldLightSelection(void)
5354 {
5355         if (r_editlights.integer)
5356         {
5357                 R_Shadow_SetCursorLocationForView();
5358                 R_Shadow_SelectLightInView();
5359         }
5360         else
5361                 R_Shadow_SelectLight(NULL);
5362 }
5363
5364 void R_Shadow_EditLights_Clear_f(void)
5365 {
5366         R_Shadow_ClearWorldLights();
5367 }
5368
5369 void R_Shadow_EditLights_Reload_f(void)
5370 {
5371         if (!cl.worldmodel)
5372                 return;
5373         strlcpy(r_shadow_mapname, cl.worldname, sizeof(r_shadow_mapname));
5374         R_Shadow_ClearWorldLights();
5375         R_Shadow_LoadWorldLights();
5376         if (!Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray))
5377         {
5378                 R_Shadow_LoadLightsFile();
5379                 if (!Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray))
5380                         R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite();
5381         }
5382 }
5383
5384 void R_Shadow_EditLights_Save_f(void)
5385 {
5386         if (!cl.worldmodel)
5387                 return;
5388         R_Shadow_SaveWorldLights();
5389 }
5390
5391 void R_Shadow_EditLights_ImportLightEntitiesFromMap_f(void)
5392 {
5393         R_Shadow_ClearWorldLights();
5394         R_Shadow_LoadWorldLightsFromMap_LightArghliteTyrlite();
5395 }
5396
5397 void R_Shadow_EditLights_ImportLightsFile_f(void)
5398 {
5399         R_Shadow_ClearWorldLights();
5400         R_Shadow_LoadLightsFile();
5401 }
5402
5403 void R_Shadow_EditLights_Spawn_f(void)
5404 {
5405         vec3_t color;
5406         if (!r_editlights.integer)
5407         {
5408                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
5409                 return;
5410         }
5411         if (Cmd_Argc() != 1)
5412         {
5413                 Con_Print("r_editlights_spawn does not take parameters\n");
5414                 return;
5415         }
5416         color[0] = color[1] = color[2] = 1;
5417         R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), r_editlights_cursorlocation, vec3_origin, color, 200, 0, 0, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
5418 }
5419
5420 void R_Shadow_EditLights_Edit_f(void)
5421 {
5422         vec3_t origin, angles, color;
5423         vec_t radius, corona, coronasizescale, ambientscale, diffusescale, specularscale;
5424         int style, shadows, flags, normalmode, realtimemode;
5425         char cubemapname[MAX_INPUTLINE];
5426         if (!r_editlights.integer)
5427         {
5428                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
5429                 return;
5430         }
5431         if (!r_shadow_selectedlight)
5432         {
5433                 Con_Print("No selected light.\n");
5434                 return;
5435         }
5436         VectorCopy(r_shadow_selectedlight->origin, origin);
5437         VectorCopy(r_shadow_selectedlight->angles, angles);
5438         VectorCopy(r_shadow_selectedlight->color, color);
5439         radius = r_shadow_selectedlight->radius;
5440         style = r_shadow_selectedlight->style;
5441         if (r_shadow_selectedlight->cubemapname)
5442                 strlcpy(cubemapname, r_shadow_selectedlight->cubemapname, sizeof(cubemapname));
5443         else
5444                 cubemapname[0] = 0;
5445         shadows = r_shadow_selectedlight->shadow;
5446         corona = r_shadow_selectedlight->corona;
5447         coronasizescale = r_shadow_selectedlight->coronasizescale;
5448         ambientscale = r_shadow_selectedlight->ambientscale;
5449         diffusescale = r_shadow_selectedlight->diffusescale;
5450         specularscale = r_shadow_selectedlight->specularscale;
5451         flags = r_shadow_selectedlight->flags;
5452         normalmode = (flags & LIGHTFLAG_NORMALMODE) != 0;
5453         realtimemode = (flags & LIGHTFLAG_REALTIMEMODE) != 0;
5454         if (!strcmp(Cmd_Argv(1), "origin"))
5455         {
5456                 if (Cmd_Argc() != 5)
5457                 {
5458                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
5459                         return;
5460                 }
5461                 origin[0] = atof(Cmd_Argv(2));
5462                 origin[1] = atof(Cmd_Argv(3));
5463                 origin[2] = atof(Cmd_Argv(4));
5464         }
5465         else if (!strcmp(Cmd_Argv(1), "originx"))
5466         {
5467                 if (Cmd_Argc() != 3)
5468                 {
5469                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5470                         return;
5471                 }
5472                 origin[0] = atof(Cmd_Argv(2));
5473         }
5474         else if (!strcmp(Cmd_Argv(1), "originy"))
5475         {
5476                 if (Cmd_Argc() != 3)
5477                 {
5478                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5479                         return;
5480                 }
5481                 origin[1] = atof(Cmd_Argv(2));
5482         }
5483         else if (!strcmp(Cmd_Argv(1), "originz"))
5484         {
5485                 if (Cmd_Argc() != 3)
5486                 {
5487                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5488                         return;
5489                 }
5490                 origin[2] = atof(Cmd_Argv(2));
5491         }
5492         else if (!strcmp(Cmd_Argv(1), "move"))
5493         {
5494                 if (Cmd_Argc() != 5)
5495                 {
5496                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
5497                         return;
5498                 }
5499                 origin[0] += atof(Cmd_Argv(2));
5500                 origin[1] += atof(Cmd_Argv(3));
5501                 origin[2] += atof(Cmd_Argv(4));
5502         }
5503         else if (!strcmp(Cmd_Argv(1), "movex"))
5504         {
5505                 if (Cmd_Argc() != 3)
5506                 {
5507                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5508                         return;
5509                 }
5510                 origin[0] += atof(Cmd_Argv(2));
5511         }
5512         else if (!strcmp(Cmd_Argv(1), "movey"))
5513         {
5514                 if (Cmd_Argc() != 3)
5515                 {
5516                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5517                         return;
5518                 }
5519                 origin[1] += atof(Cmd_Argv(2));
5520         }
5521         else if (!strcmp(Cmd_Argv(1), "movez"))
5522         {
5523                 if (Cmd_Argc() != 3)
5524                 {
5525                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5526                         return;
5527                 }
5528                 origin[2] += atof(Cmd_Argv(2));
5529         }
5530         else if (!strcmp(Cmd_Argv(1), "angles"))
5531         {
5532                 if (Cmd_Argc() != 5)
5533                 {
5534                         Con_Printf("usage: r_editlights_edit %s x y z\n", Cmd_Argv(1));
5535                         return;
5536                 }
5537                 angles[0] = atof(Cmd_Argv(2));
5538                 angles[1] = atof(Cmd_Argv(3));
5539                 angles[2] = atof(Cmd_Argv(4));
5540         }
5541         else if (!strcmp(Cmd_Argv(1), "anglesx"))
5542         {
5543                 if (Cmd_Argc() != 3)
5544                 {
5545                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5546                         return;
5547                 }
5548                 angles[0] = atof(Cmd_Argv(2));
5549         }
5550         else if (!strcmp(Cmd_Argv(1), "anglesy"))
5551         {
5552                 if (Cmd_Argc() != 3)
5553                 {
5554                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5555                         return;
5556                 }
5557                 angles[1] = atof(Cmd_Argv(2));
5558         }
5559         else if (!strcmp(Cmd_Argv(1), "anglesz"))
5560         {
5561                 if (Cmd_Argc() != 3)
5562                 {
5563                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5564                         return;
5565                 }
5566                 angles[2] = atof(Cmd_Argv(2));
5567         }
5568         else if (!strcmp(Cmd_Argv(1), "color"))
5569         {
5570                 if (Cmd_Argc() != 5)
5571                 {
5572                         Con_Printf("usage: r_editlights_edit %s red green blue\n", Cmd_Argv(1));
5573                         return;
5574                 }
5575                 color[0] = atof(Cmd_Argv(2));
5576                 color[1] = atof(Cmd_Argv(3));
5577                 color[2] = atof(Cmd_Argv(4));
5578         }
5579         else if (!strcmp(Cmd_Argv(1), "radius"))
5580         {
5581                 if (Cmd_Argc() != 3)
5582                 {
5583                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5584                         return;
5585                 }
5586                 radius = atof(Cmd_Argv(2));
5587         }
5588         else if (!strcmp(Cmd_Argv(1), "colorscale"))
5589         {
5590                 if (Cmd_Argc() == 3)
5591                 {
5592                         double scale = atof(Cmd_Argv(2));
5593                         color[0] *= scale;
5594                         color[1] *= scale;
5595                         color[2] *= scale;
5596                 }
5597                 else
5598                 {
5599                         if (Cmd_Argc() != 5)
5600                         {
5601                                 Con_Printf("usage: r_editlights_edit %s red green blue  (OR grey instead of red green blue)\n", Cmd_Argv(1));
5602                                 return;
5603                         }
5604                         color[0] *= atof(Cmd_Argv(2));
5605                         color[1] *= atof(Cmd_Argv(3));
5606                         color[2] *= atof(Cmd_Argv(4));
5607                 }
5608         }
5609         else if (!strcmp(Cmd_Argv(1), "radiusscale") || !strcmp(Cmd_Argv(1), "sizescale"))
5610         {
5611                 if (Cmd_Argc() != 3)
5612                 {
5613                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5614                         return;
5615                 }
5616                 radius *= atof(Cmd_Argv(2));
5617         }
5618         else if (!strcmp(Cmd_Argv(1), "style"))
5619         {
5620                 if (Cmd_Argc() != 3)
5621                 {
5622                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5623                         return;
5624                 }
5625                 style = atoi(Cmd_Argv(2));
5626         }
5627         else if (!strcmp(Cmd_Argv(1), "cubemap"))
5628         {
5629                 if (Cmd_Argc() > 3)
5630                 {
5631                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5632                         return;
5633                 }
5634                 if (Cmd_Argc() == 3)
5635                         strlcpy(cubemapname, Cmd_Argv(2), sizeof(cubemapname));
5636                 else
5637                         cubemapname[0] = 0;
5638         }
5639         else if (!strcmp(Cmd_Argv(1), "shadows"))
5640         {
5641                 if (Cmd_Argc() != 3)
5642                 {
5643                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5644                         return;
5645                 }
5646                 shadows = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
5647         }
5648         else if (!strcmp(Cmd_Argv(1), "corona"))
5649         {
5650                 if (Cmd_Argc() != 3)
5651                 {
5652                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5653                         return;
5654                 }
5655                 corona = atof(Cmd_Argv(2));
5656         }
5657         else if (!strcmp(Cmd_Argv(1), "coronasize"))
5658         {
5659                 if (Cmd_Argc() != 3)
5660                 {
5661                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5662                         return;
5663                 }
5664                 coronasizescale = atof(Cmd_Argv(2));
5665         }
5666         else if (!strcmp(Cmd_Argv(1), "ambient"))
5667         {
5668                 if (Cmd_Argc() != 3)
5669                 {
5670                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5671                         return;
5672                 }
5673                 ambientscale = atof(Cmd_Argv(2));
5674         }
5675         else if (!strcmp(Cmd_Argv(1), "diffuse"))
5676         {
5677                 if (Cmd_Argc() != 3)
5678                 {
5679                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5680                         return;
5681                 }
5682                 diffusescale = atof(Cmd_Argv(2));
5683         }
5684         else if (!strcmp(Cmd_Argv(1), "specular"))
5685         {
5686                 if (Cmd_Argc() != 3)
5687                 {
5688                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5689                         return;
5690                 }
5691                 specularscale = atof(Cmd_Argv(2));
5692         }
5693         else if (!strcmp(Cmd_Argv(1), "normalmode"))
5694         {
5695                 if (Cmd_Argc() != 3)
5696                 {
5697                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5698                         return;
5699                 }
5700                 normalmode = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
5701         }
5702         else if (!strcmp(Cmd_Argv(1), "realtimemode"))
5703         {
5704                 if (Cmd_Argc() != 3)
5705                 {
5706                         Con_Printf("usage: r_editlights_edit %s value\n", Cmd_Argv(1));
5707                         return;
5708                 }
5709                 realtimemode = Cmd_Argv(2)[0] == 'y' || Cmd_Argv(2)[0] == 'Y' || Cmd_Argv(2)[0] == 't' || atoi(Cmd_Argv(2));
5710         }
5711         else
5712         {
5713                 Con_Print("usage: r_editlights_edit [property] [value]\n");
5714                 Con_Print("Selected light's properties:\n");
5715                 Con_Printf("Origin       : %f %f %f\n", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);
5716                 Con_Printf("Angles       : %f %f %f\n", r_shadow_selectedlight->angles[0], r_shadow_selectedlight->angles[1], r_shadow_selectedlight->angles[2]);
5717                 Con_Printf("Color        : %f %f %f\n", r_shadow_selectedlight->color[0], r_shadow_selectedlight->color[1], r_shadow_selectedlight->color[2]);
5718                 Con_Printf("Radius       : %f\n", r_shadow_selectedlight->radius);
5719                 Con_Printf("Corona       : %f\n", r_shadow_selectedlight->corona);
5720                 Con_Printf("Style        : %i\n", r_shadow_selectedlight->style);
5721                 Con_Printf("Shadows      : %s\n", r_shadow_selectedlight->shadow ? "yes" : "no");
5722                 Con_Printf("Cubemap      : %s\n", r_shadow_selectedlight->cubemapname);
5723                 Con_Printf("CoronaSize   : %f\n", r_shadow_selectedlight->coronasizescale);
5724                 Con_Printf("Ambient      : %f\n", r_shadow_selectedlight->ambientscale);
5725                 Con_Printf("Diffuse      : %f\n", r_shadow_selectedlight->diffusescale);
5726                 Con_Printf("Specular     : %f\n", r_shadow_selectedlight->specularscale);
5727                 Con_Printf("NormalMode   : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_NORMALMODE) ? "yes" : "no");
5728                 Con_Printf("RealTimeMode : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_REALTIMEMODE) ? "yes" : "no");
5729                 return;
5730         }
5731         flags = (normalmode ? LIGHTFLAG_NORMALMODE : 0) | (realtimemode ? LIGHTFLAG_REALTIMEMODE : 0);
5732         R_Shadow_UpdateWorldLight(r_shadow_selectedlight, origin, angles, color, radius, corona, style, shadows, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
5733 }
5734
5735 void R_Shadow_EditLights_EditAll_f(void)
5736 {
5737         size_t lightindex;
5738         dlight_t *light, *oldselected;
5739         size_t range;
5740
5741         if (!r_editlights.integer)
5742         {
5743                 Con_Print("Cannot edit lights when not in editing mode. Set r_editlights to 1.\n");
5744                 return;
5745         }
5746
5747         oldselected = r_shadow_selectedlight;
5748         // EditLights doesn't seem to have a "remove" command or something so:
5749         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
5750         for (lightindex = 0;lightindex < range;lightindex++)
5751         {
5752                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5753                 if (!light)
5754                         continue;
5755                 R_Shadow_SelectLight(light);
5756                 R_Shadow_EditLights_Edit_f();
5757         }
5758         // return to old selected (to not mess editing once selection is locked)
5759         R_Shadow_SelectLight(oldselected);
5760 }
5761
5762 void R_Shadow_EditLights_DrawSelectedLightProperties(void)
5763 {
5764         int lightnumber, lightcount;
5765         size_t lightindex, range;
5766         dlight_t *light;
5767         float x, y;
5768         char temp[256];
5769         if (!r_editlights.integer)
5770                 return;
5771         x = vid_conwidth.value - 240;
5772         y = 5;
5773         DrawQ_Pic(x-5, y-5, NULL, 250, 155, 0, 0, 0, 0.75, 0);
5774         lightnumber = -1;
5775         lightcount = 0;
5776         range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
5777         for (lightindex = 0;lightindex < range;lightindex++)
5778         {
5779                 light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
5780                 if (!light)
5781                         continue;
5782                 if (light == r_shadow_selectedlight)
5783                         lightnumber = lightindex;
5784                 lightcount++;
5785         }
5786         dpsnprintf(temp, sizeof(temp), "Cursor origin: %.0f %.0f %.0f", r_editlights_cursorlocation[0], r_editlights_cursorlocation[1], r_editlights_cursorlocation[2]); DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, false, FONT_DEFAULT);y += 8;
5787         dpsnprintf(temp, sizeof(temp), "Total lights : %i active (%i total)", lightcount, (int)Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray)); DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, false, FONT_DEFAULT);y += 8;
5788         y += 8;
5789         if (r_shadow_selectedlight == NULL)
5790                 return;
5791         dpsnprintf(temp, sizeof(temp), "Light #%i properties:", lightnumber);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5792         dpsnprintf(temp, sizeof(temp), "Origin       : %.0f %.0f %.0f\n", r_shadow_selectedlight->origin[0], r_shadow_selectedlight->origin[1], r_shadow_selectedlight->origin[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5793         dpsnprintf(temp, sizeof(temp), "Angles       : %.0f %.0f %.0f\n", r_shadow_selectedlight->angles[0], r_shadow_selectedlight->angles[1], r_shadow_selectedlight->angles[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5794         dpsnprintf(temp, sizeof(temp), "Color        : %.2f %.2f %.2f\n", r_shadow_selectedlight->color[0], r_shadow_selectedlight->color[1], r_shadow_selectedlight->color[2]);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5795         dpsnprintf(temp, sizeof(temp), "Radius       : %.0f\n", r_shadow_selectedlight->radius);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5796         dpsnprintf(temp, sizeof(temp), "Corona       : %.0f\n", r_shadow_selectedlight->corona);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5797         dpsnprintf(temp, sizeof(temp), "Style        : %i\n", r_shadow_selectedlight->style);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5798         dpsnprintf(temp, sizeof(temp), "Shadows      : %s\n", r_shadow_selectedlight->shadow ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5799         dpsnprintf(temp, sizeof(temp), "Cubemap      : %s\n", r_shadow_selectedlight->cubemapname);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5800         dpsnprintf(temp, sizeof(temp), "CoronaSize   : %.2f\n", r_shadow_selectedlight->coronasizescale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5801         dpsnprintf(temp, sizeof(temp), "Ambient      : %.2f\n", r_shadow_selectedlight->ambientscale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5802         dpsnprintf(temp, sizeof(temp), "Diffuse      : %.2f\n", r_shadow_selectedlight->diffusescale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5803         dpsnprintf(temp, sizeof(temp), "Specular     : %.2f\n", r_shadow_selectedlight->specularscale);DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5804         dpsnprintf(temp, sizeof(temp), "NormalMode   : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_NORMALMODE) ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5805         dpsnprintf(temp, sizeof(temp), "RealTimeMode : %s\n", (r_shadow_selectedlight->flags & LIGHTFLAG_REALTIMEMODE) ? "yes" : "no");DrawQ_String(x, y, temp, 0, 8, 8, 1, 1, 1, 1, 0, NULL, true, FONT_DEFAULT);y += 8;
5806 }
5807
5808 void R_Shadow_EditLights_ToggleShadow_f(void)
5809 {
5810         if (!r_editlights.integer)
5811         {
5812                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
5813                 return;
5814         }
5815         if (!r_shadow_selectedlight)
5816         {
5817                 Con_Print("No selected light.\n");
5818                 return;
5819         }
5820         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);
5821 }
5822
5823 void R_Shadow_EditLights_ToggleCorona_f(void)
5824 {
5825         if (!r_editlights.integer)
5826         {
5827                 Con_Print("Cannot spawn light when not in editing mode.  Set r_editlights to 1.\n");
5828                 return;
5829         }
5830         if (!r_shadow_selectedlight)
5831         {
5832                 Con_Print("No selected light.\n");
5833                 return;
5834         }
5835         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);
5836 }
5837
5838 void R_Shadow_EditLights_Remove_f(void)
5839 {
5840         if (!r_editlights.integer)
5841         {
5842                 Con_Print("Cannot remove light when not in editing mode.  Set r_editlights to 1.\n");
5843                 return;
5844         }
5845         if (!r_shadow_selectedlight)
5846         {
5847                 Con_Print("No selected light.\n");
5848                 return;
5849         }
5850         R_Shadow_FreeWorldLight(r_shadow_selectedlight);
5851         r_shadow_selectedlight = NULL;
5852 }
5853
5854 void R_Shadow_EditLights_Help_f(void)
5855 {
5856         Con_Print(
5857 "Documentation on r_editlights system:\n"
5858 "Settings:\n"
5859 "r_editlights : enable/disable editing mode\n"
5860 "r_editlights_cursordistance : maximum distance of cursor from eye\n"
5861 "r_editlights_cursorpushback : push back cursor this far from surface\n"
5862 "r_editlights_cursorpushoff : push cursor off surface this far\n"
5863 "r_editlights_cursorgrid : snap cursor to grid of this size\n"
5864 "r_editlights_quakelightsizescale : imported quake light entity size scaling\n"
5865 "Commands:\n"
5866 "r_editlights_help : this help\n"
5867 "r_editlights_clear : remove all lights\n"
5868 "r_editlights_reload : reload .rtlights, .lights file, or entities\n"
5869 "r_editlights_lock : lock selection to current light, if already locked - unlock\n"
5870 "r_editlights_save : save to .rtlights file\n"
5871 "r_editlights_spawn : create a light with default settings\n"
5872 "r_editlights_edit command : edit selected light - more documentation below\n"
5873 "r_editlights_remove : remove selected light\n"
5874 "r_editlights_toggleshadow : toggles on/off selected light's shadow property\n"
5875 "r_editlights_importlightentitiesfrommap : reload light entities\n"
5876 "r_editlights_importlightsfile : reload .light file (produced by hlight)\n"
5877 "Edit commands:\n"
5878 "origin x y z : set light location\n"
5879 "originx x: set x component of light location\n"
5880 "originy y: set y component of light location\n"
5881 "originz z: set z component of light location\n"
5882 "move x y z : adjust light location\n"
5883 "movex x: adjust x component of light location\n"
5884 "movey y: adjust y component of light location\n"
5885 "movez z: adjust z component of light location\n"
5886 "angles x y z : set light angles\n"
5887 "anglesx x: set x component of light angles\n"
5888 "anglesy y: set y component of light angles\n"
5889 "anglesz z: set z component of light angles\n"
5890 "color r g b : set color of light (can be brighter than 1 1 1)\n"
5891 "radius radius : set radius (size) of light\n"
5892 "colorscale grey : multiply color of light (1 does nothing)\n"
5893 "colorscale r g b : multiply color of light (1 1 1 does nothing)\n"
5894 "radiusscale scale : multiply radius (size) of light (1 does nothing)\n"
5895 "sizescale scale : multiply radius (size) of light (1 does nothing)\n"
5896 "style style : set lightstyle of light (flickering patterns, switches, etc)\n"
5897 "cubemap basename : set filter cubemap of light (not yet supported)\n"
5898 "shadows 1/0 : turn on/off shadows\n"
5899 "corona n : set corona intensity\n"
5900 "coronasize n : set corona size (0-1)\n"
5901 "ambient n : set ambient intensity (0-1)\n"
5902 "diffuse n : set diffuse intensity (0-1)\n"
5903 "specular n : set specular intensity (0-1)\n"
5904 "normalmode 1/0 : turn on/off rendering of this light in rtworld 0 mode\n"
5905 "realtimemode 1/0 : turn on/off rendering of this light in rtworld 1 mode\n"
5906 "<nothing> : print light properties to console\n"
5907         );
5908 }
5909
5910 void R_Shadow_EditLights_CopyInfo_f(void)
5911 {
5912         if (!r_editlights.integer)
5913         {
5914                 Con_Print("Cannot copy light info when not in editing mode.  Set r_editlights to 1.\n");
5915                 return;
5916         }
5917         if (!r_shadow_selectedlight)
5918         {
5919                 Con_Print("No selected light.\n");
5920                 return;
5921         }
5922         VectorCopy(r_shadow_selectedlight->angles, r_shadow_bufferlight.angles);
5923         VectorCopy(r_shadow_selectedlight->color, r_shadow_bufferlight.color);
5924         r_shadow_bufferlight.radius = r_shadow_selectedlight->radius;
5925         r_shadow_bufferlight.style = r_shadow_selectedlight->style;
5926         if (r_shadow_selectedlight->cubemapname)
5927                 strlcpy(r_shadow_bufferlight.cubemapname, r_shadow_selectedlight->cubemapname, sizeof(r_shadow_bufferlight.cubemapname));
5928         else
5929                 r_shadow_bufferlight.cubemapname[0] = 0;
5930         r_shadow_bufferlight.shadow = r_shadow_selectedlight->shadow;
5931         r_shadow_bufferlight.corona = r_shadow_selectedlight->corona;
5932         r_shadow_bufferlight.coronasizescale = r_shadow_selectedlight->coronasizescale;
5933         r_shadow_bufferlight.ambientscale = r_shadow_selectedlight->ambientscale;
5934         r_shadow_bufferlight.diffusescale = r_shadow_selectedlight->diffusescale;
5935         r_shadow_bufferlight.specularscale = r_shadow_selectedlight->specularscale;
5936         r_shadow_bufferlight.flags = r_shadow_selectedlight->flags;
5937 }
5938
5939 void R_Shadow_EditLights_PasteInfo_f(void)
5940 {
5941         if (!r_editlights.integer)
5942         {
5943                 Con_Print("Cannot paste light info when not in editing mode.  Set r_editlights to 1.\n");
5944                 return;
5945         }
5946         if (!r_shadow_selectedlight)
5947         {
5948                 Con_Print("No selected light.\n");
5949                 return;
5950         }
5951         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);
5952 }
5953
5954 void R_Shadow_EditLights_Lock_f(void)
5955 {
5956         if (!r_editlights.integer)
5957         {
5958                 Con_Print("Cannot lock on light when not in editing mode.  Set r_editlights to 1.\n");
5959                 return;
5960         }
5961         if (r_editlights_lockcursor)
5962         {
5963                 r_editlights_lockcursor = false;
5964                 return;
5965         }
5966         if (!r_shadow_selectedlight)
5967         {
5968                 Con_Print("No selected light to lock on.\n");
5969                 return;
5970         }
5971         r_editlights_lockcursor = true;
5972 }
5973
5974 void R_Shadow_EditLights_Init(void)
5975 {
5976         Cvar_RegisterVariable(&r_editlights);
5977         Cvar_RegisterVariable(&r_editlights_cursordistance);
5978         Cvar_RegisterVariable(&r_editlights_cursorpushback);
5979         Cvar_RegisterVariable(&r_editlights_cursorpushoff);
5980         Cvar_RegisterVariable(&r_editlights_cursorgrid);
5981         Cvar_RegisterVariable(&r_editlights_quakelightsizescale);
5982         Cmd_AddCommand("r_editlights_help", R_Shadow_EditLights_Help_f, "prints documentation on console commands and variables in rtlight editing system");
5983         Cmd_AddCommand("r_editlights_clear", R_Shadow_EditLights_Clear_f, "removes all world lights (let there be darkness!)");
5984         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)");
5985         Cmd_AddCommand("r_editlights_save", R_Shadow_EditLights_Save_f, "save .rtlights file for current level");
5986         Cmd_AddCommand("r_editlights_spawn", R_Shadow_EditLights_Spawn_f, "creates a light with default properties (let there be light!)");
5987         Cmd_AddCommand("r_editlights_edit", R_Shadow_EditLights_Edit_f, "changes a property on the selected light");
5988         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)");
5989         Cmd_AddCommand("r_editlights_remove", R_Shadow_EditLights_Remove_f, "remove selected light");
5990         Cmd_AddCommand("r_editlights_toggleshadow", R_Shadow_EditLights_ToggleShadow_f, "toggle on/off the shadow option on the selected light");
5991         Cmd_AddCommand("r_editlights_togglecorona", R_Shadow_EditLights_ToggleCorona_f, "toggle on/off the corona option on the selected light");
5992         Cmd_AddCommand("r_editlights_importlightentitiesfrommap", R_Shadow_EditLights_ImportLightEntitiesFromMap_f, "load lights from .ent file or map entities (ignoring .rtlights or .lights file)");
5993         Cmd_AddCommand("r_editlights_importlightsfile", R_Shadow_EditLights_ImportLightsFile_f, "load lights from .lights file (ignoring .rtlights or .ent files and map entities)");
5994         Cmd_AddCommand("r_editlights_copyinfo", R_Shadow_EditLights_CopyInfo_f, "store a copy of all properties (except origin) of the selected light");
5995         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)");
5996         Cmd_AddCommand("r_editlights_lock", R_Shadow_EditLights_Lock_f, "lock selection to current light, if already locked - unlock");
5997 }
5998
5999
6000
6001 /*
6002 =============================================================================
6003
6004 LIGHT SAMPLING
6005
6006 =============================================================================
6007 */
6008
6009 void R_CompleteLightPoint(vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const vec3_t p, const int flags)
6010 {
6011         int i, numlights, flag;
6012         float f, relativepoint[3], dist, dist2, lightradius2;
6013         rtlight_t *light;
6014         dlight_t *dlight;
6015
6016         VectorClear(diffusecolor);
6017         VectorClear(diffusenormal);
6018
6019         if (flags & LP_LIGHTMAP)
6020         {
6021                 if (!r_fullbright.integer && r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->brush.LightPoint)
6022                 {
6023                         ambientcolor[0] = ambientcolor[1] = ambientcolor[2] = r_refdef.scene.ambient;
6024                         r_refdef.scene.worldmodel->brush.LightPoint(r_refdef.scene.worldmodel, p, ambientcolor, diffusecolor, diffusenormal);
6025                 }
6026                 else
6027                         VectorSet(ambientcolor, 1, 1, 1);
6028         }
6029         if (flags & LP_RTWORLD)
6030         {
6031                 flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
6032                 numlights = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray);
6033                 for (i = 0; i < numlights; i++)
6034                 {
6035                         dlight = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, i);
6036                         if (!dlight)
6037                                 continue;
6038                         light = &dlight->rtlight;
6039                         if (!(light->flags & flag))
6040                                 continue;
6041                         // sample
6042                         lightradius2 = light->radius * light->radius;
6043                         VectorSubtract(light->shadoworigin, p, relativepoint);
6044                         dist2 = VectorLength2(relativepoint);
6045                         if (dist2 >= lightradius2)
6046                                 continue;
6047                         dist = sqrt(dist2) / light->radius;
6048                         f = dist < 1 ? (r_shadow_lightintensityscale.value * ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist))) : 0;
6049                         if (f <= 0)
6050                                 continue;
6051                         // todo: add to both ambient and diffuse
6052                         if (!light->shadow || CL_TraceLine(p, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction == 1)
6053                                 VectorMA(ambientcolor, f, light->currentcolor, ambientcolor);
6054                 }
6055         }
6056         if (flags & LP_DYNLIGHT)
6057         {
6058                 // sample dlights
6059                 for (i = 0;i < r_refdef.scene.numlights;i++)
6060                 {
6061                         light = r_refdef.scene.lights[i];
6062                         // sample
6063                         lightradius2 = light->radius * light->radius;
6064                         VectorSubtract(light->shadoworigin, p, relativepoint);
6065                         dist2 = VectorLength2(relativepoint);
6066                         if (dist2 >= lightradius2)
6067                                 continue;
6068                         dist = sqrt(dist2) / light->radius;
6069                         f = dist < 1 ? (r_shadow_lightintensityscale.value * ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist))) : 0;
6070                         if (f <= 0)
6071                                 continue;
6072                         // todo: add to both ambient and diffuse
6073                         if (!light->shadow || CL_TraceLine(p, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction == 1)
6074                                 VectorMA(ambientcolor, f, light->color, ambientcolor);
6075                 }
6076         }
6077 }