fc144cd52a829940f7a9b77f9a9a2fada437eb33
[xonotic/darkplaces.git] / gl_rsurf.c
1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13 See the GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18
19 */
20 // r_surf.c: surface-related refresh code
21
22 #include "quakedef.h"
23 #include "r_shadow.h"
24
25 #define MAX_LIGHTMAP_SIZE 256
26
27 static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
28 static float floatblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
29
30 static qbyte templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
31
32 cvar_t r_ambient = {0, "r_ambient", "0"};
33 cvar_t r_drawportals = {0, "r_drawportals", "0"};
34 cvar_t r_testvis = {0, "r_testvis", "0"};
35 cvar_t r_floatbuildlightmap = {0, "r_floatbuildlightmap", "0"};
36 cvar_t r_detailtextures = {CVAR_SAVE, "r_detailtextures", "1"};
37 cvar_t r_surfaceworldnode = {0, "r_surfaceworldnode", "0"};
38 cvar_t r_drawcollisionbrushes_polygonfactor = {0, "r_drawcollisionbrushes_polygonfactor", "-1"};
39 cvar_t r_drawcollisionbrushes_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "0"};
40 cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0"};
41 cvar_t gl_lightmaps = {0, "gl_lightmaps", "0"};
42
43 static int dlightdivtable[32768];
44
45 static int R_IntAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surface)
46 {
47         int sdtable[256], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract, k;
48         unsigned int *bl;
49         float dist, impact[3], local[3];
50         dlight_t *light;
51
52         lit = false;
53
54         smax = (surface->extents[0] >> 4) + 1;
55         tmax = (surface->extents[1] >> 4) + 1;
56         smax3 = smax * 3;
57
58         for (lnum = 0, light = r_dlight;lnum < r_numdlights;lnum++, light++)
59         {
60                 if (!(surface->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
61                         continue;                                       // not lit by this light
62
63                 Matrix4x4_Transform(matrix, light->origin, local);
64                 dist = DotProduct (local, surface->plane->normal) - surface->plane->dist;
65
66                 // for comparisons to minimum acceptable light
67                 // compensate for LIGHTOFFSET
68                 maxdist = (int) light->rtlight.lightmap_cullradius2 + LIGHTOFFSET;
69
70                 dist2 = dist * dist;
71                 dist2 += LIGHTOFFSET;
72                 if (dist2 >= maxdist)
73                         continue;
74
75                 if (surface->plane->type < 3)
76                 {
77                         VectorCopy(local, impact);
78                         impact[surface->plane->type] -= dist;
79                 }
80                 else
81                 {
82                         impact[0] = local[0] - surface->plane->normal[0] * dist;
83                         impact[1] = local[1] - surface->plane->normal[1] * dist;
84                         impact[2] = local[2] - surface->plane->normal[2] * dist;
85                 }
86
87                 impacts = DotProduct (impact, surface->texinfo->vecs[0]) + surface->texinfo->vecs[0][3] - surface->texturemins[0];
88                 impactt = DotProduct (impact, surface->texinfo->vecs[1]) + surface->texinfo->vecs[1][3] - surface->texturemins[1];
89
90                 s = bound(0, impacts, smax * 16) - impacts;
91                 t = bound(0, impactt, tmax * 16) - impactt;
92                 i = s * s + t * t + dist2;
93                 if (i > maxdist)
94                         continue;
95
96                 // reduce calculations
97                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
98                         sdtable[s] = i * i + dist2;
99
100                 maxdist3 = maxdist - dist2;
101
102                 // convert to 8.8 blocklights format
103                 red = light->rtlight.lightmap_light[0] * (1.0f / 128.0f);
104                 green = light->rtlight.lightmap_light[1] * (1.0f / 128.0f);
105                 blue = light->rtlight.lightmap_light[2] * (1.0f / 128.0f);
106                 subtract = (int) (light->rtlight.lightmap_subtract * 4194304.0f);
107                 bl = intblocklights;
108
109                 i = impactt;
110                 for (t = 0;t < tmax;t++, i -= 16)
111                 {
112                         td = i * i;
113                         // make sure some part of it is visible on this line
114                         if (td < maxdist3)
115                         {
116                                 maxdist2 = maxdist - td;
117                                 for (s = 0;s < smax;s++)
118                                 {
119                                         if (sdtable[s] < maxdist2)
120                                         {
121                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
122                                                 if (k > 0)
123                                                 {
124                                                         bl[0] += (red   * k);
125                                                         bl[1] += (green * k);
126                                                         bl[2] += (blue  * k);
127                                                         lit = true;
128                                                 }
129                                         }
130                                         bl += 3;
131                                 }
132                         }
133                         else // skip line
134                                 bl += smax3;
135                 }
136         }
137         return lit;
138 }
139
140 static int R_FloatAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surface)
141 {
142         int lnum, s, t, smax, tmax, smax3, lit, impacts, impactt;
143         float sdtable[256], *bl, k, dist, dist2, maxdist, maxdist2, maxdist3, td1, td, red, green, blue, impact[3], local[3], subtract;
144         dlight_t *light;
145
146         lit = false;
147
148         smax = (surface->extents[0] >> 4) + 1;
149         tmax = (surface->extents[1] >> 4) + 1;
150         smax3 = smax * 3;
151
152         for (lnum = 0, light = r_dlight;lnum < r_numdlights;lnum++, light++)
153         {
154                 if (!(surface->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
155                         continue;                                       // not lit by this light
156
157                 Matrix4x4_Transform(matrix, light->origin, local);
158                 dist = DotProduct (local, surface->plane->normal) - surface->plane->dist;
159
160                 // for comparisons to minimum acceptable light
161                 // compensate for LIGHTOFFSET
162                 maxdist = (int) light->rtlight.lightmap_cullradius2 + LIGHTOFFSET;
163
164                 dist2 = dist * dist;
165                 dist2 += LIGHTOFFSET;
166                 if (dist2 >= maxdist)
167                         continue;
168
169                 if (surface->plane->type < 3)
170                 {
171                         VectorCopy(local, impact);
172                         impact[surface->plane->type] -= dist;
173                 }
174                 else
175                 {
176                         impact[0] = local[0] - surface->plane->normal[0] * dist;
177                         impact[1] = local[1] - surface->plane->normal[1] * dist;
178                         impact[2] = local[2] - surface->plane->normal[2] * dist;
179                 }
180
181                 impacts = DotProduct (impact, surface->texinfo->vecs[0]) + surface->texinfo->vecs[0][3] - surface->texturemins[0];
182                 impactt = DotProduct (impact, surface->texinfo->vecs[1]) + surface->texinfo->vecs[1][3] - surface->texturemins[1];
183
184                 td = bound(0, impacts, smax * 16) - impacts;
185                 td1 = bound(0, impactt, tmax * 16) - impactt;
186                 td = td * td + td1 * td1 + dist2;
187                 if (td > maxdist)
188                         continue;
189
190                 // reduce calculations
191                 for (s = 0, td1 = impacts; s < smax; s++, td1 -= 16.0f)
192                         sdtable[s] = td1 * td1 + dist2;
193
194                 maxdist3 = maxdist - dist2;
195
196                 // convert to 8.8 blocklights format
197                 red = light->rtlight.lightmap_light[0];
198                 green = light->rtlight.lightmap_light[1];
199                 blue = light->rtlight.lightmap_light[2];
200                 subtract = light->rtlight.lightmap_subtract * 32768.0f;
201                 bl = floatblocklights;
202
203                 td1 = impactt;
204                 for (t = 0;t < tmax;t++, td1 -= 16.0f)
205                 {
206                         td = td1 * td1;
207                         // make sure some part of it is visible on this line
208                         if (td < maxdist3)
209                         {
210                                 maxdist2 = maxdist - td;
211                                 for (s = 0;s < smax;s++)
212                                 {
213                                         if (sdtable[s] < maxdist2)
214                                         {
215                                                 k = (32768.0f / (sdtable[s] + td)) - subtract;
216                                                 bl[0] += red   * k;
217                                                 bl[1] += green * k;
218                                                 bl[2] += blue  * k;
219                                                 lit = true;
220                                         }
221                                         bl += 3;
222                                 }
223                         }
224                         else // skip line
225                                 bl += smax3;
226                 }
227         }
228         return lit;
229 }
230
231 /*
232 ===============
233 R_BuildLightMap
234
235 Combine and scale multiple lightmaps into the 8.8 format in blocklights
236 ===============
237 */
238 static void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
239 {
240         if (!r_floatbuildlightmap.integer)
241         {
242                 int smax, tmax, i, j, size, size3, maps, stride, l;
243                 unsigned int *bl, scale;
244                 qbyte *lightmap, *out, *stain;
245
246                 // update cached lighting info
247                 surface->cached_dlight = 0;
248
249                 smax = (surface->extents[0]>>4)+1;
250                 tmax = (surface->extents[1]>>4)+1;
251                 size = smax*tmax;
252                 size3 = size*3;
253                 lightmap = surface->samples;
254
255         // set to full bright if no light data
256                 bl = intblocklights;
257                 if (!ent->model->brushq1.lightdata)
258                 {
259                         for (i = 0;i < size3;i++)
260                                 bl[i] = 255*256;
261                 }
262                 else
263                 {
264         // clear to no light
265                         memset(bl, 0, size*3*sizeof(unsigned int));
266
267                         if (surface->dlightframe == r_framecount)
268                         {
269                                 surface->cached_dlight = R_IntAddDynamicLights(&ent->inversematrix, surface);
270                                 if (surface->cached_dlight)
271                                         c_light_polys++;
272                         }
273
274         // add all the lightmaps
275                         if (lightmap)
276                         {
277                                 bl = intblocklights;
278                                 for (maps = 0;maps < MAXLIGHTMAPS && surface->styles[maps] != 255;maps++, lightmap += size3)
279                                         for (scale = d_lightstylevalue[surface->styles[maps]], i = 0;i < size3;i++)
280                                                 bl[i] += lightmap[i] * scale;
281                         }
282                 }
283
284                 stain = surface->stainsamples;
285                 bl = intblocklights;
286                 out = templight;
287                 // the >> 16 shift adjusts down 8 bits to account for the stainmap
288                 // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
289                 // be doubled during rendering to achieve 2x overbright
290                 // (0 = 0.0, 128 = 1.0, 256 = 2.0)
291                 if (ent->model->brushq1.lightmaprgba)
292                 {
293                         stride = (surface->lightmaptexturestride - smax) * 4;
294                         for (i = 0;i < tmax;i++, out += stride)
295                         {
296                                 for (j = 0;j < smax;j++)
297                                 {
298                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
299                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
300                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
301                                         *out++ = 255;
302                                 }
303                         }
304                 }
305                 else
306                 {
307                         stride = (surface->lightmaptexturestride - smax) * 3;
308                         for (i = 0;i < tmax;i++, out += stride)
309                         {
310                                 for (j = 0;j < smax;j++)
311                                 {
312                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
313                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
314                                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
315                                 }
316                         }
317                 }
318
319                 R_UpdateTexture(surface->lightmaptexture, templight);
320         }
321         else
322         {
323                 int smax, tmax, i, j, size, size3, maps, stride, l;
324                 float *bl, scale;
325                 qbyte *lightmap, *out, *stain;
326
327                 // update cached lighting info
328                 surface->cached_dlight = 0;
329
330                 smax = (surface->extents[0]>>4)+1;
331                 tmax = (surface->extents[1]>>4)+1;
332                 size = smax*tmax;
333                 size3 = size*3;
334                 lightmap = surface->samples;
335
336         // set to full bright if no light data
337                 bl = floatblocklights;
338                 if (!ent->model->brushq1.lightdata)
339                 {
340                         for (i = 0;i < size3;i++)
341                                 bl[i] = 255*256;
342                 }
343                 else
344                 {
345                         memset(bl, 0, size*3*sizeof(float));
346
347                         if (surface->dlightframe == r_framecount)
348                         {
349                                 surface->cached_dlight = R_FloatAddDynamicLights(&ent->inversematrix, surface);
350                                 if (surface->cached_dlight)
351                                         c_light_polys++;
352                         }
353
354                         // add all the lightmaps
355                         if (lightmap)
356                         {
357                                 bl = floatblocklights;
358                                 for (maps = 0;maps < MAXLIGHTMAPS && surface->styles[maps] != 255;maps++, lightmap += size3)
359                                         for (scale = d_lightstylevalue[surface->styles[maps]], i = 0;i < size3;i++)
360                                                 bl[i] += lightmap[i] * scale;
361                         }
362                 }
363
364                 stain = surface->stainsamples;
365                 bl = floatblocklights;
366                 out = templight;
367                 // this scaling adjusts down 8 bits to account for the stainmap
368                 // scaling, and remaps the 0.0-2.0 (2x overbright) to 0-256, it will
369                 // be doubled during rendering to achieve 2x overbright
370                 // (0 = 0.0, 128 = 1.0, 256 = 2.0)
371                 scale = 1.0f / (1 << 16);
372                 if (ent->model->brushq1.lightmaprgba)
373                 {
374                         stride = (surface->lightmaptexturestride - smax) * 4;
375                         for (i = 0;i < tmax;i++, out += stride)
376                         {
377                                 for (j = 0;j < smax;j++)
378                                 {
379                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
380                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
381                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
382                                         *out++ = 255;
383                                 }
384                         }
385                 }
386                 else
387                 {
388                         stride = (surface->lightmaptexturestride - smax) * 3;
389                         for (i = 0;i < tmax;i++, out += stride)
390                         {
391                                 for (j = 0;j < smax;j++)
392                                 {
393                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
394                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
395                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
396                                 }
397                         }
398                 }
399
400                 R_UpdateTexture(surface->lightmaptexture, templight);
401         }
402 }
403
404 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
405 {
406         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
407         msurface_t *surface, *endsurface;
408         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
409         qbyte *bl;
410         vec3_t impact;
411
412         maxdist = radius * radius;
413         invradius = 1.0f / radius;
414
415 loc0:
416         if (!node->plane)
417                 return;
418         ndist = PlaneDiff(origin, node->plane);
419         if (ndist > radius)
420         {
421                 node = node->children[0];
422                 goto loc0;
423         }
424         if (ndist < -radius)
425         {
426                 node = node->children[1];
427                 goto loc0;
428         }
429
430         dist2 = ndist * ndist;
431         maxdist3 = maxdist - dist2;
432
433         if (node->plane->type < 3)
434         {
435                 VectorCopy(origin, impact);
436                 impact[node->plane->type] -= ndist;
437         }
438         else
439         {
440                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
441                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
442                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
443         }
444
445         for (surface = model->brush.data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
446         {
447                 if (surface->stainsamples)
448                 {
449                         smax = (surface->extents[0] >> 4) + 1;
450                         tmax = (surface->extents[1] >> 4) + 1;
451
452                         impacts = DotProduct (impact, surface->texinfo->vecs[0]) + surface->texinfo->vecs[0][3] - surface->texturemins[0];
453                         impactt = DotProduct (impact, surface->texinfo->vecs[1]) + surface->texinfo->vecs[1][3] - surface->texturemins[1];
454
455                         s = bound(0, impacts, smax * 16) - impacts;
456                         t = bound(0, impactt, tmax * 16) - impactt;
457                         i = s * s + t * t + dist2;
458                         if (i > maxdist)
459                                 continue;
460
461                         // reduce calculations
462                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
463                                 sdtable[s] = i * i + dist2;
464
465                         bl = surface->stainsamples;
466                         smax3 = smax * 3;
467                         stained = false;
468
469                         i = impactt;
470                         for (t = 0;t < tmax;t++, i -= 16)
471                         {
472                                 td = i * i;
473                                 // make sure some part of it is visible on this line
474                                 if (td < maxdist3)
475                                 {
476                                         maxdist2 = maxdist - td;
477                                         for (s = 0;s < smax;s++)
478                                         {
479                                                 if (sdtable[s] < maxdist2)
480                                                 {
481                                                         ratio = lhrandom(0.0f, 1.0f);
482                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
483                                                         if (a >= (1.0f / 64.0f))
484                                                         {
485                                                                 if (a > 1)
486                                                                         a = 1;
487                                                                 bl[0] = (qbyte) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
488                                                                 bl[1] = (qbyte) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
489                                                                 bl[2] = (qbyte) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
490                                                                 stained = true;
491                                                         }
492                                                 }
493                                                 bl += 3;
494                                         }
495                                 }
496                                 else // skip line
497                                         bl += smax3;
498                         }
499                         // force lightmap upload
500                         if (stained)
501                                 surface->cached_dlight = true;
502                 }
503         }
504
505         if (node->children[0]->plane)
506         {
507                 if (node->children[1]->plane)
508                 {
509                         R_StainNode(node->children[0], model, origin, radius, fcolor);
510                         node = node->children[1];
511                         goto loc0;
512                 }
513                 else
514                 {
515                         node = node->children[0];
516                         goto loc0;
517                 }
518         }
519         else if (node->children[1]->plane)
520         {
521                 node = node->children[1];
522                 goto loc0;
523         }
524 }
525
526 void R_Stain (const vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2)
527 {
528         int n;
529         float fcolor[8];
530         entity_render_t *ent;
531         model_t *model;
532         vec3_t org;
533         if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes)
534                 return;
535         fcolor[0] = cr1;
536         fcolor[1] = cg1;
537         fcolor[2] = cb1;
538         fcolor[3] = ca1 * (1.0f / 64.0f);
539         fcolor[4] = cr2 - cr1;
540         fcolor[5] = cg2 - cg1;
541         fcolor[6] = cb2 - cb1;
542         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
543
544         R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
545
546         // look for embedded bmodels
547         for (n = 0;n < cl_num_brushmodel_entities;n++)
548         {
549                 ent = cl_brushmodel_entities[n];
550                 model = ent->model;
551                 if (model && model->name[0] == '*')
552                 {
553                         Mod_CheckLoaded(model);
554                         if (model->brush.data_nodes)
555                         {
556                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
557                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
558                         }
559                 }
560         }
561 }
562
563
564 /*
565 =============================================================
566
567         BRUSH MODELS
568
569 =============================================================
570 */
571
572 static void RSurf_AddLightmapToVertexColors_Color4f(const int *lightmapoffsets, float *c, int numverts, const qbyte *samples, int size3, const qbyte *styles)
573 {
574         int i;
575         float scale;
576         const qbyte *lm;
577         if (styles[0] != 255)
578         {
579                 for (i = 0;i < numverts;i++, c += 4)
580                 {
581                         lm = samples + lightmapoffsets[i];
582                         scale = d_lightstylevalue[styles[0]] * (1.0f / 32768.0f);
583                         VectorMA(c, scale, lm, c);
584                         if (styles[1] != 255)
585                         {
586                                 lm += size3;
587                                 scale = d_lightstylevalue[styles[1]] * (1.0f / 32768.0f);
588                                 VectorMA(c, scale, lm, c);
589                                 if (styles[2] != 255)
590                                 {
591                                         lm += size3;
592                                         scale = d_lightstylevalue[styles[2]] * (1.0f / 32768.0f);
593                                         VectorMA(c, scale, lm, c);
594                                         if (styles[3] != 255)
595                                         {
596                                                 lm += size3;
597                                                 scale = d_lightstylevalue[styles[3]] * (1.0f / 32768.0f);
598                                                 VectorMA(c, scale, lm, c);
599                                         }
600                                 }
601                         }
602                 }
603         }
604 }
605
606 static void RSurf_FogColors_Vertex3f_Color4f(const float *v, float *c, float colorscale, int numverts, const float *modelorg)
607 {
608         int i;
609         float diff[3], f;
610         if (fogenabled)
611         {
612                 for (i = 0;i < numverts;i++, v += 3, c += 4)
613                 {
614                         VectorSubtract(v, modelorg, diff);
615                         f = colorscale * (1 - exp(fogdensity/DotProduct(diff, diff)));
616                         VectorScale(c, f, c);
617                 }
618         }
619         else if (colorscale != 1)
620                 for (i = 0;i < numverts;i++, c += 4)
621                         VectorScale(c, colorscale, c);
622 }
623
624 static void RSurf_FoggedColors_Vertex3f_Color4f(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
625 {
626         int i;
627         float diff[3], f;
628         r *= colorscale;
629         g *= colorscale;
630         b *= colorscale;
631         if (fogenabled)
632         {
633                 for (i = 0;i < numverts;i++, v += 3, c += 4)
634                 {
635                         VectorSubtract(v, modelorg, diff);
636                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
637                         c[0] = r * f;
638                         c[1] = g * f;
639                         c[2] = b * f;
640                         c[3] = a;
641                 }
642         }
643         else
644         {
645                 for (i = 0;i < numverts;i++, c += 4)
646                 {
647                         c[0] = r;
648                         c[1] = g;
649                         c[2] = b;
650                         c[3] = a;
651                 }
652         }
653 }
654
655 static void RSurf_FogPassColors_Vertex3f_Color4f(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
656 {
657         int i;
658         float diff[3], f;
659         r *= colorscale;
660         g *= colorscale;
661         b *= colorscale;
662         for (i = 0;i < numverts;i++, v += 3, c += 4)
663         {
664                 VectorSubtract(v, modelorg, diff);
665                 f = exp(fogdensity/DotProduct(diff, diff));
666                 c[0] = r;
667                 c[1] = g;
668                 c[2] = b;
669                 c[3] = a * f;
670         }
671 }
672
673 static int RSurf_LightSeparate_Vertex3f_Color4f(const matrix4x4_t *matrix, const int *dlightbits, int numverts, const float *vert, float *color, float scale)
674 {
675         float f;
676         const float *v;
677         float *c;
678         int i, l, lit = false;
679         const dlight_t *light;
680         vec3_t lightorigin;
681         for (l = 0;l < r_numdlights;l++)
682         {
683                 if (dlightbits[l >> 5] & (1 << (l & 31)))
684                 {
685                         light = &r_dlight[l];
686                         Matrix4x4_Transform(matrix, light->origin, lightorigin);
687                         for (i = 0, v = vert, c = color;i < numverts;i++, v += 3, c += 4)
688                         {
689                                 f = VectorDistance2(v, lightorigin) + LIGHTOFFSET;
690                                 if (f < light->rtlight.lightmap_cullradius2)
691                                 {
692                                         f = ((1.0f / f) - light->rtlight.lightmap_subtract) * scale;
693                                         VectorMA(c, f, light->rtlight.lightmap_light, c);
694                                         lit = true;
695                                 }
696                         }
697                 }
698         }
699         return lit;
700 }
701
702 static void RSurfShader_Transparent_Callback(const void *calldata1, int calldata2)
703 {
704         const entity_render_t *ent = calldata1;
705         const msurface_t *surface = ent->model->brush.data_surfaces + calldata2;
706         rmeshstate_t m;
707         float currentalpha;
708         float base, colorscale;
709         vec3_t modelorg;
710         texture_t *texture;
711         float args[4] = {0.05f,0,0,0.04f};
712         int rendertype, turb, fullbright;
713
714         R_Mesh_Matrix(&ent->matrix);
715         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
716
717         texture = surface->texture;
718         if (texture->animated)
719                 texture = texture->anim_frames[ent->frame != 0][(texture->anim_total[ent->frame != 0] >= 2) ? ((int) (r_refdef.time * 5.0f) % texture->anim_total[ent->frame != 0]) : 0];
720         currentalpha = ent->alpha;
721         if (texture->flags & SURF_WATERALPHA)
722                 currentalpha *= r_wateralpha.value;
723
724         GL_DepthTest(!(ent->effects & EF_NODEPTHTEST));
725         if (ent->effects & EF_ADDITIVE)
726         {
727                 rendertype = SURFRENDER_ADD;
728                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
729                 GL_DepthMask(false);
730         }
731         else if (currentalpha < 1 || texture->skin.fog != NULL)
732         {
733                 rendertype = SURFRENDER_ALPHA;
734                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
735                 GL_DepthMask(false);
736         }
737         else
738         {
739                 rendertype = SURFRENDER_OPAQUE;
740                 GL_BlendFunc(GL_ONE, GL_ZERO);
741                 GL_DepthMask(!(ent->effects & EF_NODEPTHTEST));
742         }
743
744         turb = (texture->flags & SURF_DRAWTURB) && r_waterscroll.value;
745         fullbright = !(ent->flags & RENDER_LIGHT) || (texture->flags & SURF_DRAWFULLBRIGHT) || !surface->samples;
746         base = fullbright ? 2.0f : r_ambient.value * (1.0f / 64.0f);
747         if (texture->flags & SURF_DRAWTURB)
748                 base *= 0.5f;
749         if ((texture->flags & SURF_DRAWTURB) && gl_textureshader && r_watershader.value && !fogenabled && fullbright && ent->colormod[0] == 1 && ent->colormod[1] == 1 && ent->colormod[2] == 1)
750         {
751                 // NVIDIA Geforce3 distortion texture shader on water
752                 GL_Color(1, 1, 1, currentalpha);
753                 memset(&m, 0, sizeof(m));
754                 m.pointer_vertex = surface->mesh.data_vertex3f;
755                 m.tex[0] = R_GetTexture(mod_shared_distorttexture[(int)(r_refdef.time * 16)&63]);
756                 m.tex[1] = R_GetTexture(texture->skin.base);
757                 m.texcombinergb[0] = GL_REPLACE;
758                 m.texcombinergb[1] = GL_REPLACE;
759                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
760                 m.pointer_texcoord[1] = surface->mesh.data_texcoordtexture2f;
761                 Matrix4x4_CreateFromQuakeEntity(&m.texmatrix[0], 0, 0, 0, 0, 0, 0, r_watershader.value);
762                 Matrix4x4_CreateTranslate(&m.texmatrix[1], sin(r_refdef.time) * 0.025 * r_waterscroll.value, sin(r_refdef.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
763                 R_Mesh_State(&m);
764
765                 GL_ActiveTexture(0);
766                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
767                 GL_ActiveTexture(1);
768                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_OFFSET_TEXTURE_2D_NV);
769                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB);
770                 qglTexEnvfv(GL_TEXTURE_SHADER_NV, GL_OFFSET_TEXTURE_MATRIX_NV, &args[0]);
771                 qglEnable(GL_TEXTURE_SHADER_NV);
772
773                 GL_LockArrays(0, surface->mesh.num_vertices);
774                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
775                 GL_LockArrays(0, 0);
776
777                 qglDisable(GL_TEXTURE_SHADER_NV);
778                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
779                 GL_ActiveTexture(0);
780         }
781         else
782         {
783                 memset(&m, 0, sizeof(m));
784                 m.pointer_vertex = surface->mesh.data_vertex3f;
785                 m.pointer_color = varray_color4f;
786                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
787                 m.tex[0] = R_GetTexture(texture->skin.base);
788                 if (turb)
789                 {
790                         // scrolling in texture matrix
791                         Matrix4x4_CreateTranslate(&m.texmatrix[0], sin(r_refdef.time) * 0.025 * r_waterscroll.value, sin(r_refdef.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
792                 }
793                 colorscale = 1;
794                 if (gl_combine.integer)
795                 {
796                         m.texrgbscale[0] = 4;
797                         colorscale *= 0.25f;
798                 }
799                 R_FillColors(varray_color4f, surface->mesh.num_vertices, base * ent->colormod[0], base * ent->colormod[1], base * ent->colormod[2], currentalpha);
800                 if (!fullbright)
801                 {
802                         if (surface->dlightframe == r_framecount)
803                                 RSurf_LightSeparate_Vertex3f_Color4f(&ent->inversematrix, surface->dlightbits, surface->mesh.num_vertices, surface->mesh.data_vertex3f, varray_color4f, 1);
804                         if (surface->samples)
805                                 RSurf_AddLightmapToVertexColors_Color4f(surface->mesh.data_lightmapoffsets, varray_color4f,surface->mesh.num_vertices, surface->samples, ((surface->extents[0]>>4)+1)*((surface->extents[1]>>4)+1)*3, surface->styles);
806                 }
807                 RSurf_FogColors_Vertex3f_Color4f(surface->mesh.data_vertex3f, varray_color4f, colorscale, surface->mesh.num_vertices, modelorg);
808                 R_Mesh_State(&m);
809                 GL_LockArrays(0, surface->mesh.num_vertices);
810                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
811                 GL_LockArrays(0, 0);
812                 if (texture->skin.glow)
813                 {
814                         memset(&m, 0, sizeof(m));
815                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
816                         GL_DepthMask(false);
817                         m.pointer_color = varray_color4f;
818                         m.tex[0] = R_GetTexture(texture->skin.glow);
819                         m.pointer_vertex = surface->mesh.data_vertex3f;
820                         if (m.tex[0])
821                         {
822                                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
823                                 if (turb)
824                                 {
825                                         // scrolling in texture matrix
826                                         Matrix4x4_CreateTranslate(&m.texmatrix[0], sin(r_refdef.time) * 0.025 * r_waterscroll.value, sin(r_refdef.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
827                                 }
828                         }
829                         R_Mesh_State(&m);
830                         RSurf_FoggedColors_Vertex3f_Color4f(surface->mesh.data_vertex3f, varray_color4f, 1, 1, 1, currentalpha, 1, surface->mesh.num_vertices, modelorg);
831                         GL_LockArrays(0, surface->mesh.num_vertices);
832                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
833                         GL_LockArrays(0, 0);
834                 }
835                 if (fogenabled && rendertype != SURFRENDER_ADD)
836                 {
837                         memset(&m, 0, sizeof(m));
838                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
839                         GL_DepthMask(false);
840                         m.pointer_color = varray_color4f;
841                         m.tex[0] = R_GetTexture(texture->skin.fog);
842                         m.pointer_vertex = surface->mesh.data_vertex3f;
843                         if (m.tex[0])
844                         {
845                                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
846                                 if (turb)
847                                 {
848                                         // scrolling in texture matrix
849                                         Matrix4x4_CreateTranslate(&m.texmatrix[0], sin(r_refdef.time) * 0.025 * r_waterscroll.value, sin(r_refdef.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
850                                 }
851                         }
852                         R_Mesh_State(&m);
853                         RSurf_FogPassColors_Vertex3f_Color4f(surface->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], currentalpha, 1, surface->mesh.num_vertices, modelorg);
854                         GL_LockArrays(0, surface->mesh.num_vertices);
855                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
856                         GL_LockArrays(0, 0);
857                 }
858         }
859 }
860
861 void R_UpdateTextureInfo(entity_render_t *ent)
862 {
863         int i, texframe, alttextures;
864         texture_t *t;
865
866         if (!ent->model)
867                 return;
868
869         alttextures = ent->frame != 0;
870         texframe = (int)(r_refdef.time * 5.0f);
871         for (i = 0;i < ent->model->brush.num_textures;i++)
872         {
873                 t = ent->model->brush.data_textures + i;
874                 t->currentalpha = ent->alpha;
875                 if (t->flags & SURF_WATERALPHA)
876                         t->currentalpha *= r_wateralpha.value;
877                 if (ent->effects & EF_ADDITIVE)
878                         t->rendertype = SURFRENDER_ADD;
879                 else if (t->currentalpha < 1 || t->skin.fog != NULL)
880                         t->rendertype = SURFRENDER_ALPHA;
881                 else
882                         t->rendertype = SURFRENDER_OPAQUE;
883                 // we don't need to set currentframe if t->animated is false because
884                 // it was already set up by the texture loader for non-animating
885                 if (t->animated)
886                         t->currentframe = t->anim_frames[alttextures][(t->anim_total[alttextures] >= 2) ? (texframe % t->anim_total[alttextures]) : 0];
887         }
888 }
889
890 void R_DrawSurfaceList(entity_render_t *ent, texture_t *texture, int texturenumsurfaces, msurface_t **texturesurfacelist)
891 {
892         int texturesurfaceindex;
893         vec3_t center, modelorg;
894         msurface_t *surface;
895         rmeshstate_t m;
896         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
897         if (gl_lightmaps.integer)
898         {
899                 GL_BlendFunc(GL_ONE, GL_ZERO);
900                 GL_DepthMask(true);
901                 GL_DepthTest(true);
902                 GL_Color(1, 1, 1, 1);
903                 memset(&m, 0, sizeof(m));
904                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
905                 {
906                         surface = texturesurfacelist[texturesurfaceindex];
907                         m.tex[0] = R_GetTexture(surface->lightmaptexture);
908                         m.pointer_vertex = surface->mesh.data_vertex3f;
909                         m.pointer_texcoord[0] = surface->mesh.data_texcoordlightmap2f;
910                         R_Mesh_State(&m);
911                         GL_LockArrays(0, surface->mesh.num_vertices);
912                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
913                         GL_LockArrays(0, 0);
914                 }
915         }
916         else if (texture->rendertype != SURFRENDER_OPAQUE)
917         {
918                 // transparent vertex shaded from lightmap
919                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
920                 {
921                         surface = texturesurfacelist[texturesurfaceindex];
922                         vec3_t tempcenter;
923                         tempcenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
924                         tempcenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
925                         tempcenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
926                         Matrix4x4_Transform(&ent->matrix, tempcenter, center);
927                         R_MeshQueue_AddTransparent(ent->effects & EF_NODEPTHTEST ? r_vieworigin : center, RSurfShader_Transparent_Callback, ent, surface - ent->model->brush.data_surfaces);
928                 }
929         }
930         else if (texture->flags & SURF_LIGHTMAP)
931         {
932                 qboolean dolightmap = (ent->flags & RENDER_LIGHT);
933                 qboolean dobase = true;
934                 qboolean doambient = r_ambient.value > 0;
935                 qboolean dodetail = r_detailtextures.integer != 0;
936                 qboolean doglow = texture->skin.glow != NULL;
937                 qboolean dofog = fogenabled;
938                 // multitexture cases
939                 if (r_textureunits.integer >= 2 && gl_combine.integer && dobase && dolightmap)
940                 {
941                         dobase = false;
942                         dolightmap = false;
943                         GL_BlendFunc(GL_ONE, GL_ZERO);
944                         GL_DepthMask(true);
945                         GL_DepthTest(true);
946                         GL_Color(1, 1, 1, 1);
947                         GL_Color(r_lightmapintensity * ent->colormod[0], r_lightmapintensity * ent->colormod[1], r_lightmapintensity * ent->colormod[2], 1);
948                         memset(&m, 0, sizeof(m));
949                         m.tex[0] = R_GetTexture(texture->skin.base);
950                         m.texrgbscale[1] = 2;
951                         if (r_textureunits.integer >= 3 && !doambient && dodetail)
952                         {
953                                 m.tex[2] = R_GetTexture(texture->skin.detail);
954                                 m.texrgbscale[2] = 2;
955                                 dodetail = false;
956                                 if (r_textureunits.integer >= 3 && texture->skin.glow)
957                                 {
958                                         m.tex[3] = R_GetTexture(texture->skin.glow);
959                                         m.texcombinergb[3] = GL_ADD;
960                                         doglow = false;
961                                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
962                                         {
963                                                 surface = texturesurfacelist[texturesurfaceindex];
964                                                 m.tex[1] = R_GetTexture(surface->lightmaptexture);
965                                                 m.pointer_vertex = surface->mesh.data_vertex3f;
966                                                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
967                                                 m.pointer_texcoord[1] = surface->mesh.data_texcoordlightmap2f;
968                                                 m.pointer_texcoord[2] = surface->mesh.data_texcoorddetail2f;
969                                                 m.pointer_texcoord[3] = surface->mesh.data_texcoordtexture2f;
970                                                 R_Mesh_State(&m);
971                                                 GL_LockArrays(0, surface->mesh.num_vertices);
972                                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
973                                                 GL_LockArrays(0, 0);
974                                         }
975                                 }
976                                 else
977                                 {
978                                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
979                                         {
980                                                 surface = texturesurfacelist[texturesurfaceindex];
981                                                 m.tex[1] = R_GetTexture(surface->lightmaptexture);
982                                                 m.pointer_vertex = surface->mesh.data_vertex3f;
983                                                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
984                                                 m.pointer_texcoord[1] = surface->mesh.data_texcoordlightmap2f;
985                                                 m.pointer_texcoord[2] = surface->mesh.data_texcoorddetail2f;
986                                                 R_Mesh_State(&m);
987                                                 GL_LockArrays(0, surface->mesh.num_vertices);
988                                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
989                                                 GL_LockArrays(0, 0);
990                                         }
991                                 }
992                         }
993                         else if (r_textureunits.integer >= 3 && !doambient && !dodetail && doglow)
994                         {
995                                 m.tex[2] = R_GetTexture(texture->skin.glow);
996                                 m.texcombinergb[2] = GL_ADD;
997                                 doglow = false;
998                                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
999                                 {
1000                                         surface = texturesurfacelist[texturesurfaceindex];
1001                                         m.tex[1] = R_GetTexture(surface->lightmaptexture);
1002                                         m.pointer_vertex = surface->mesh.data_vertex3f;
1003                                         m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1004                                         m.pointer_texcoord[1] = surface->mesh.data_texcoordlightmap2f;
1005                                         m.pointer_texcoord[2] = surface->mesh.data_texcoordtexture2f;
1006                                         R_Mesh_State(&m);
1007                                         GL_LockArrays(0, surface->mesh.num_vertices);
1008                                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1009                                         GL_LockArrays(0, 0);
1010                                 }
1011                         }
1012                 }
1013                 // anything not handled above
1014                 if (dobase)
1015                 {
1016                         GL_BlendFunc(GL_ONE, GL_ZERO);
1017                         GL_DepthMask(true);
1018                         GL_DepthTest(true);
1019                         GL_Color(1, 1, 1, 1);
1020                         if (ent->flags & RENDER_LIGHT)
1021                                 GL_Color(r_lightmapintensity * ent->colormod[0], r_lightmapintensity * ent->colormod[1], r_lightmapintensity * ent->colormod[2], 1);
1022                         else
1023                                 GL_Color(ent->colormod[0], ent->colormod[1], ent->colormod[2], 1);
1024                         memset(&m, 0, sizeof(m));
1025                         m.tex[0] = R_GetTexture(texture->skin.base);
1026                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1027                         {
1028                                 surface = texturesurfacelist[texturesurfaceindex];
1029                                 m.pointer_vertex = surface->mesh.data_vertex3f;
1030                                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1031                                 R_Mesh_State(&m);
1032                                 GL_LockArrays(0, surface->mesh.num_vertices);
1033                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1034                                 GL_LockArrays(0, 0);
1035                         }
1036                 }
1037                 GL_DepthMask(false);
1038                 if (dolightmap)
1039                 {
1040                         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
1041                         GL_DepthMask(false);
1042                         GL_DepthTest(true);
1043                         GL_Color(1, 1, 1, 1);
1044                         memset(&m, 0, sizeof(m));
1045                         m.tex[0] = R_GetTexture(texture->skin.base);
1046                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1047                         {
1048                                 surface = texturesurfacelist[texturesurfaceindex];
1049                                 m.tex[0] = R_GetTexture(surface->lightmaptexture);
1050                                 m.pointer_vertex = surface->mesh.data_vertex3f;
1051                                 m.pointer_texcoord[0] = surface->mesh.data_texcoordlightmap2f;
1052                                 R_Mesh_State(&m);
1053                                 GL_LockArrays(0, surface->mesh.num_vertices);
1054                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1055                                 GL_LockArrays(0, 0);
1056                         }
1057                 }
1058                 if (doambient)
1059                 {
1060                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1061                         GL_DepthMask(false);
1062                         GL_DepthTest(true);
1063                         memset(&m, 0, sizeof(m));
1064                         GL_Color(r_ambient.value * (1.0f / 128.0f) * ent->colormod[0], r_ambient.value * (1.0f / 128.0f) * ent->colormod[1], r_ambient.value * (1.0f / 128.0f) * ent->colormod[2], 1);
1065                         m.tex[0] = R_GetTexture(texture->skin.base);
1066                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1067                         {
1068                                 surface = texturesurfacelist[texturesurfaceindex];
1069                                 m.pointer_vertex = surface->mesh.data_vertex3f;
1070                                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1071                                 R_Mesh_State(&m);
1072                                 GL_LockArrays(0, surface->mesh.num_vertices);
1073                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1074                                 GL_LockArrays(0, 0);
1075                         }
1076                 }
1077                 if (dodetail)
1078                 {
1079                         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
1080                         GL_DepthMask(false);
1081                         GL_DepthTest(true);
1082                         GL_Color(1, 1, 1, 1);
1083                         memset(&m, 0, sizeof(m));
1084                         m.tex[0] = R_GetTexture(texture->skin.detail);
1085                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1086                         {
1087                                 surface = texturesurfacelist[texturesurfaceindex];
1088                                 m.pointer_vertex = surface->mesh.data_vertex3f;
1089                                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1090                                 R_Mesh_State(&m);
1091                                 GL_LockArrays(0, surface->mesh.num_vertices);
1092                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1093                                 GL_LockArrays(0, 0);
1094                         }
1095                 }
1096                 if (doglow)
1097                 {
1098                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1099                         GL_DepthMask(false);
1100                         GL_DepthTest(true);
1101                         GL_Color(1, 1, 1, 1);
1102                         memset(&m, 0, sizeof(m));
1103                         m.tex[0] = R_GetTexture(texture->skin.glow);
1104                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1105                         {
1106                                 surface = texturesurfacelist[texturesurfaceindex];
1107                                 m.pointer_vertex = surface->mesh.data_vertex3f;
1108                                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1109                                 R_Mesh_State(&m);
1110                                 GL_LockArrays(0, surface->mesh.num_vertices);
1111                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1112                                 GL_LockArrays(0, 0);
1113                         }
1114                 }
1115                 if (dofog)
1116                 {
1117                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1118                         GL_DepthMask(false);
1119                         GL_DepthTest(true);
1120                         memset(&m, 0, sizeof(m));
1121                         m.pointer_color = varray_color4f;
1122                         m.tex[0] = R_GetTexture(texture->skin.glow);
1123                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1124                         {
1125                                 surface = texturesurfacelist[texturesurfaceindex];
1126                                 m.pointer_vertex = surface->mesh.data_vertex3f;
1127                                 if (m.tex[0])
1128                                         m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1129                                 R_Mesh_State(&m);
1130                                 RSurf_FogPassColors_Vertex3f_Color4f(surface->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], 1, 1, surface->mesh.num_vertices, modelorg);
1131                                 GL_LockArrays(0, surface->mesh.num_vertices);
1132                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1133                                 GL_LockArrays(0, 0);
1134                         }
1135                 }
1136         }
1137         else if (texture->flags & SURF_DRAWTURB)
1138         {
1139                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1140                 {
1141                         surface = texturesurfacelist[texturesurfaceindex];
1142                         RSurfShader_Transparent_Callback(ent, surface - ent->model->brush.data_surfaces);
1143                 }
1144         }
1145         else if (texture->flags & SURF_DRAWSKY)
1146         {
1147                 if (skyrendernow)
1148                 {
1149                         skyrendernow = false;
1150                         if (skyrendermasked)
1151                                 R_Sky();
1152                 }
1153                 // LordHavoc: HalfLife maps have freaky skypolys...
1154                 if (!ent->model->brush.ishlbsp)
1155                 {
1156                         R_Mesh_Matrix(&ent->matrix);
1157                         GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
1158                         if (skyrendermasked)
1159                         {
1160                                 // depth-only (masking)
1161                                 GL_ColorMask(0,0,0,0);
1162                                 // just to make sure that braindead drivers don't draw anything
1163                                 // despite that colormask...
1164                                 GL_BlendFunc(GL_ZERO, GL_ONE);
1165                         }
1166                         else
1167                         {
1168                                 // fog sky
1169                                 GL_BlendFunc(GL_ONE, GL_ZERO);
1170                         }
1171                         GL_DepthMask(true);
1172                         GL_DepthTest(true);
1173                         memset(&m, 0, sizeof(m));
1174                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1175                         {
1176                                 surface = texturesurfacelist[texturesurfaceindex];
1177                                 m.pointer_vertex = surface->mesh.data_vertex3f;
1178                                 R_Mesh_State(&m);
1179                                 GL_LockArrays(0, surface->mesh.num_vertices);
1180                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1181                                 GL_LockArrays(0, 0);
1182                         }
1183                         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
1184                 }
1185         }
1186 }
1187
1188 void R_DrawSurfaces(entity_render_t *ent, qboolean skysurfaces)
1189 {
1190         int i, j, f, flagsmask;
1191         msurface_t *surface, **surfacechain;
1192         texture_t *t, *texture;
1193         model_t *model = ent->model;
1194         vec3_t modelorg;
1195         const int maxsurfacelist = 1024;
1196         int numsurfacelist = 0;
1197         msurface_t *surfacelist[1024];
1198         if (model == NULL)
1199                 return;
1200         R_Mesh_Matrix(&ent->matrix);
1201         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1202
1203         if (ent != r_refdef.worldentity)
1204         {
1205                 // because bmodels can be reused, we have to clear dlightframe every time
1206                 surface = model->brush.data_surfaces + model->firstmodelsurface;
1207                 for (i = 0;i < model->nummodelsurfaces;i++, surface++)
1208                         surface->dlightframe = -1;
1209         }
1210
1211         // update light styles
1212         if (!skysurfaces)
1213         {
1214                 if (r_dynamic.integer && !r_rtdlight)
1215                         R_MarkLights(ent);
1216                 for (i = 0;i < model->brushq1.light_styles;i++)
1217                 {
1218                         if (model->brushq1.light_stylevalue[i] != d_lightstylevalue[model->brushq1.light_style[i]])
1219                         {
1220                                 model->brushq1.light_stylevalue[i] = d_lightstylevalue[model->brushq1.light_style[i]];
1221                                 if ((surfacechain = model->brushq1.light_styleupdatechains[i]))
1222                                         for (;(surface = *surfacechain);surfacechain++)
1223                                                 surface->cached_dlight = true;
1224                         }
1225                 }
1226         }
1227
1228         R_UpdateTextureInfo(ent);
1229         flagsmask = skysurfaces ? SURF_DRAWSKY : (SURF_DRAWTURB | SURF_LIGHTMAP);
1230         f = 0;
1231         t = NULL;
1232         numsurfacelist = 0;
1233         for (i = 0, j = model->firstmodelsurface;i < model->nummodelsurfaces;i++, j++)
1234         {
1235                 if (ent != r_refdef.worldentity || r_worldsurfacevisible[j])
1236                 {
1237                         surface = model->brush.data_surfaces + j;
1238                         if (t != surface->texture)
1239                         {
1240                                 if (numsurfacelist)
1241                                 {
1242                                         R_DrawSurfaceList(ent, texture, numsurfacelist, surfacelist);
1243                                         numsurfacelist = 0;
1244                                 }
1245                                 t = surface->texture;
1246                                 f = t->flags & flagsmask;
1247                                 texture = t->currentframe;
1248                         }
1249                         if (f)
1250                         {
1251                                 // add face to draw list and update lightmap if necessary
1252                                 c_faces++;
1253                                 if (surface->cached_dlight && surface->lightmaptexture != NULL)
1254                                         R_BuildLightMap(ent, surface);
1255                                 surfacelist[numsurfacelist++] = surface;
1256                                 if (numsurfacelist >= maxsurfacelist)
1257                                 {
1258                                         R_DrawSurfaceList(ent, texture, numsurfacelist, surfacelist);
1259                                         numsurfacelist = 0;
1260                                 }
1261                         }
1262                 }
1263         }
1264         if (numsurfacelist)
1265                 R_DrawSurfaceList(ent, texture, numsurfacelist, surfacelist);
1266 }
1267
1268 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
1269 {
1270         int i;
1271         float *v;
1272         rmeshstate_t m;
1273         const mportal_t *portal = calldata1;
1274         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1275         GL_DepthMask(false);
1276         GL_DepthTest(true);
1277         R_Mesh_Matrix(&r_identitymatrix);
1278
1279         memset(&m, 0, sizeof(m));
1280         m.pointer_vertex = varray_vertex3f;
1281         R_Mesh_State(&m);
1282
1283         i = calldata2;
1284         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
1285                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
1286                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
1287                          0.125f);
1288         if (PlaneDiff(r_vieworigin, (&portal->plane)) < 0)
1289         {
1290                 for (i = portal->numpoints - 1, v = varray_vertex3f;i >= 0;i--, v += 3)
1291                         VectorCopy(portal->points[i].position, v);
1292         }
1293         else
1294                 for (i = 0, v = varray_vertex3f;i < portal->numpoints;i++, v += 3)
1295                         VectorCopy(portal->points[i].position, v);
1296         GL_LockArrays(0, portal->numpoints);
1297         R_Mesh_Draw(portal->numpoints, portal->numpoints - 2, polygonelements);
1298         GL_LockArrays(0, 0);
1299 }
1300
1301 // LordHavoc: this is just a nice debugging tool, very slow
1302 static void R_DrawPortals(void)
1303 {
1304         int i, portalnum;
1305         mportal_t *portal;
1306         float center[3], f;
1307         model_t *model = r_refdef.worldmodel;
1308         if (model == NULL)
1309                 return;
1310         for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
1311         {
1312                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
1313                 if (!R_CullBox(portal->mins, portal->maxs))
1314                 {
1315                         VectorClear(center);
1316                         for (i = 0;i < portal->numpoints;i++)
1317                                 VectorAdd(center, portal->points[i].position, center);
1318                         f = ixtable[portal->numpoints];
1319                         VectorScale(center, f, center);
1320                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, portal, portalnum);
1321                 }
1322         }
1323 }
1324
1325 void R_WorldVisibility(void)
1326 {
1327         model_t *model = r_refdef.worldmodel;
1328
1329         if (!model)
1330                 return;
1331
1332         if (model->type == mod_brushq3)
1333         {
1334                 int i, j;
1335                 mleaf_t *leaf;
1336                 memset(r_worldsurfacevisible, 0, r_refdef.worldmodel->brush.num_surfaces);
1337                 for (j = 0, leaf = r_refdef.worldmodel->brush.data_leafs;j < r_refdef.worldmodel->brush.num_leafs;j++, leaf++)
1338                 {
1339                         if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
1340                         {
1341                                 c_leafs++;
1342                                 for (i = 0;i < leaf->numleafsurfaces;i++)
1343                                         r_worldsurfacevisible[leaf->firstleafsurface[i]] = 1;
1344                         }
1345                 }
1346         }
1347         else if (model->type == mod_brushq1)
1348         {
1349                 int i, j, *mark;
1350                 mleaf_t *leaf;
1351                 mleaf_t *viewleaf;
1352                 int leafstackpos;
1353                 mportal_t *p;
1354                 mleaf_t *leafstack[8192];
1355                 qbyte leafvisited[32768];
1356
1357                 viewleaf = model->brushq1.PointInLeaf(model, r_vieworigin);
1358                 if (!viewleaf)
1359                         return;
1360
1361                 memset(r_worldsurfacevisible, 0, r_refdef.worldmodel->brush.num_surfaces);
1362                 if (viewleaf->clusterindex < 0 || r_surfaceworldnode.integer)
1363                 {
1364                         // equivilant to quake's RecursiveWorldNode but faster and more effective
1365                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
1366                         {
1367                                 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox (leaf->mins, leaf->maxs))
1368                                 {
1369                                         c_leafs++;
1370                                         if (leaf->numleafsurfaces)
1371                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
1372                                                         r_worldsurfacevisible[*mark] = true;
1373                                 }
1374                         }
1375                 }
1376                 else
1377                 {
1378                         // LordHavoc: portal-passage worldnode with PVS;
1379                         // follows portals leading outward from viewleaf, does not venture
1380                         // offscreen or into leafs that are not visible, faster than Quake's
1381                         // RecursiveWorldNode
1382                         leafstack[0] = viewleaf;
1383                         leafstackpos = 1;
1384                         memset(leafvisited, 0, r_refdef.worldmodel->brush.num_leafs);
1385                         while (leafstackpos)
1386                         {
1387                                 c_leafs++;
1388                                 leaf = leafstack[--leafstackpos];
1389                                 leafvisited[leaf - r_refdef.worldmodel->brush.data_leafs] = 1;
1390                                 // draw any surfaces bounding this leaf
1391                                 if (leaf->numleafsurfaces)
1392                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
1393                                                 r_worldsurfacevisible[*mark] = true;
1394                                 // follow portals into other leafs
1395                                 for (p = leaf->portals;p;p = p->next)
1396                                         if (DotProduct(r_vieworigin, p->plane.normal) < (p->plane.dist + 1) && !leafvisited[p->past - r_refdef.worldmodel->brush.data_leafs] && CHECKPVSBIT(r_pvsbits, p->past->clusterindex) && !R_CullBox(p->mins, p->maxs))
1397                                                 leafstack[leafstackpos++] = p->past;
1398                         }
1399                 }
1400
1401                 if (r_drawportals.integer)
1402                         R_DrawPortals();
1403         }
1404 }
1405
1406 void R_Q1BSP_DrawSky(entity_render_t *ent)
1407 {
1408         if (ent->model == NULL)
1409                 return;
1410         R_DrawSurfaces(ent, true);
1411 }
1412
1413 void R_Q1BSP_Draw(entity_render_t *ent)
1414 {
1415         if (ent->model == NULL)
1416                 return;
1417         c_bmodels++;
1418         R_DrawSurfaces(ent, false);
1419 }
1420
1421 void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outclusterlist, qbyte *outclusterpvs, int *outnumclusterspointer, int *outsurfacelist, qbyte *outsurfacepvs, int *outnumsurfacespointer)
1422 {
1423         model_t *model = ent->model;
1424         vec3_t lightmins, lightmaxs;
1425         int t, leafindex, leafsurfaceindex, surfaceindex, triangleindex, outnumclusters = 0, outnumsurfaces = 0;
1426         const int *e;
1427         const float *v[3];
1428         msurface_t *surface;
1429         mleaf_t *leaf;
1430         const qbyte *pvs;
1431         lightmins[0] = relativelightorigin[0] - lightradius;
1432         lightmins[1] = relativelightorigin[1] - lightradius;
1433         lightmins[2] = relativelightorigin[2] - lightradius;
1434         lightmaxs[0] = relativelightorigin[0] + lightradius;
1435         lightmaxs[1] = relativelightorigin[1] + lightradius;
1436         lightmaxs[2] = relativelightorigin[2] + lightradius;
1437         *outnumclusterspointer = 0;
1438         *outnumsurfacespointer = 0;
1439         memset(outclusterpvs, 0, model->brush.num_pvsclusterbytes);
1440         memset(outsurfacepvs, 0, (model->nummodelsurfaces + 7) >> 3);
1441         if (model == NULL)
1442         {
1443                 VectorCopy(lightmins, outmins);
1444                 VectorCopy(lightmaxs, outmaxs);
1445                 return;
1446         }
1447         VectorCopy(relativelightorigin, outmins);
1448         VectorCopy(relativelightorigin, outmaxs);
1449         if (model->brush.GetPVS)
1450                 pvs = model->brush.GetPVS(model, relativelightorigin);
1451         else
1452                 pvs = NULL;
1453         // FIXME: use BSP recursion as lights are often small
1454         for (leafindex = 0, leaf = model->brush.data_leafs;leafindex < model->brush.num_leafs;leafindex++, leaf++)
1455         {
1456                 if (BoxesOverlap(lightmins, lightmaxs, leaf->mins, leaf->maxs) && (pvs == NULL || CHECKPVSBIT(pvs, leaf->clusterindex)))
1457                 {
1458                         outmins[0] = min(outmins[0], leaf->mins[0]);
1459                         outmins[1] = min(outmins[1], leaf->mins[1]);
1460                         outmins[2] = min(outmins[2], leaf->mins[2]);
1461                         outmaxs[0] = max(outmaxs[0], leaf->maxs[0]);
1462                         outmaxs[1] = max(outmaxs[1], leaf->maxs[1]);
1463                         outmaxs[2] = max(outmaxs[2], leaf->maxs[2]);
1464                         if (outclusterpvs)
1465                         {
1466                                 if (!CHECKPVSBIT(outclusterpvs, leaf->clusterindex))
1467                                 {
1468                                         SETPVSBIT(outclusterpvs, leaf->clusterindex);
1469                                         outclusterlist[outnumclusters++] = leaf->clusterindex;
1470                                 }
1471                         }
1472                         if (outsurfacepvs)
1473                         {
1474                                 for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
1475                                 {
1476                                         surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
1477                                         if (!CHECKPVSBIT(outsurfacepvs, surfaceindex))
1478                                         {
1479                                                 surface = model->brush.data_surfaces + surfaceindex;
1480                                                 if (BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs) && (surface->texture->flags & SURF_LIGHTMAP) && !surface->texture->skin.fog)
1481                                                 {
1482                                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->mesh.num_triangles;triangleindex++, t++, e += 3)
1483                                                         {
1484                                                                 v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
1485                                                                 v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
1486                                                                 v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
1487                                                                 if (PointInfrontOfTriangle(relativelightorigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
1488                                                                 {
1489                                                                         SETPVSBIT(outsurfacepvs, surfaceindex);
1490                                                                         outsurfacelist[outnumsurfaces++] = surfaceindex;
1491                                                                         break;
1492                                                                 }
1493                                                         }
1494                                                 }
1495                                         }
1496                                 }
1497                         }
1498                 }
1499         }
1500
1501         // limit combined leaf box to light boundaries
1502         outmins[0] = max(outmins[0], lightmins[0]);
1503         outmins[1] = max(outmins[1], lightmins[1]);
1504         outmins[2] = max(outmins[2], lightmins[2]);
1505         outmaxs[0] = min(outmaxs[0], lightmaxs[0]);
1506         outmaxs[1] = min(outmaxs[1], lightmaxs[1]);
1507         outmaxs[2] = min(outmaxs[2], lightmaxs[2]);
1508
1509         *outnumclusterspointer = outnumclusters;
1510         *outnumsurfacespointer = outnumsurfaces;
1511 }
1512
1513 void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
1514 {
1515         model_t *model = ent->model;
1516         vec3_t lightmins, lightmaxs;
1517         msurface_t *surface;
1518         int surfacelistindex;
1519         if (r_drawcollisionbrushes.integer < 2)
1520         {
1521                 lightmins[0] = relativelightorigin[0] - lightradius;
1522                 lightmins[1] = relativelightorigin[1] - lightradius;
1523                 lightmins[2] = relativelightorigin[2] - lightradius;
1524                 lightmaxs[0] = relativelightorigin[0] + lightradius;
1525                 lightmaxs[1] = relativelightorigin[1] + lightradius;
1526                 lightmaxs[2] = relativelightorigin[2] + lightradius;
1527                 R_Mesh_Matrix(&ent->matrix);
1528                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
1529                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1530                 {
1531                         surface = model->brush.data_surfaces + surfacelist[surfacelistindex];
1532                         R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->mesh.num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
1533                 }
1534                 R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, lightradius + model->radius + r_shadow_projectdistance.value, numshadowmark, shadowmarklist);
1535         }
1536 }
1537
1538 void R_Q1BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap, vec_t ambientscale, vec_t diffusescale, vec_t specularscale, int numsurfaces, const int *surfacelist)
1539 {
1540         model_t *model = ent->model;
1541         vec3_t lightmins, lightmaxs, modelorg;
1542         msurface_t *surface;
1543         texture_t *t;
1544         int surfacelistindex;
1545         if (r_drawcollisionbrushes.integer < 2)
1546         {
1547                 lightmins[0] = relativelightorigin[0] - lightradius;
1548                 lightmins[1] = relativelightorigin[1] - lightradius;
1549                 lightmins[2] = relativelightorigin[2] - lightradius;
1550                 lightmaxs[0] = relativelightorigin[0] + lightradius;
1551                 lightmaxs[1] = relativelightorigin[1] + lightradius;
1552                 lightmaxs[2] = relativelightorigin[2] + lightradius;
1553                 R_Mesh_Matrix(&ent->matrix);
1554                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1555                 R_UpdateTextureInfo(ent);
1556                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1557                 {
1558                         surface = model->brush.data_surfaces + surfacelist[surfacelistindex];
1559                         if (r_shadow_compilingrtlight)
1560                         {
1561                                 // if compiling an rtlight, capture the mesh
1562                                 t = surface->texture;
1563                                 if (t->flags & SURF_LIGHTMAP && t->skin.fog == NULL)
1564                                         Mod_ShadowMesh_AddMesh(r_shadow_mempool, r_shadow_compilingrtlight->static_meshchain_light, surface->texture->skin.base, surface->texture->skin.gloss, surface->texture->skin.nmap, surface->mesh.data_vertex3f, surface->mesh.data_svector3f, surface->mesh.data_tvector3f, surface->mesh.data_normal3f, surface->mesh.data_texcoordtexture2f, surface->mesh.num_triangles, surface->mesh.data_element3i);
1565                         }
1566                         else if (ent != r_refdef.worldentity || r_worldsurfacevisible[surface - ent->model->brush.data_surfaces])
1567                         {
1568                                 t = surface->texture->currentframe;
1569                                 // FIXME: transparent surfaces need to be lit later
1570                                 if (t->flags & SURF_LIGHTMAP && t->rendertype == SURFRENDER_OPAQUE)
1571                                         R_Shadow_RenderLighting(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i, surface->mesh.data_vertex3f, surface->mesh.data_svector3f, surface->mesh.data_tvector3f, surface->mesh.data_normal3f, surface->mesh.data_texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.base, t->skin.nmap, t->skin.gloss, lightcubemap, ambientscale, diffusescale, specularscale);
1572                         }
1573                 }
1574         }
1575 }
1576
1577 void R_DrawCollisionBrush(colbrushf_t *brush)
1578 {
1579         int i;
1580         rmeshstate_t m;
1581         memset(&m, 0, sizeof(m));
1582         m.pointer_vertex = brush->points->v;
1583         R_Mesh_State(&m);
1584         i = (int)(((size_t)brush) / sizeof(colbrushf_t));
1585         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
1586         GL_LockArrays(0, brush->numpoints);
1587         R_Mesh_Draw(brush->numpoints, brush->numtriangles, brush->elements);
1588         GL_LockArrays(0, 0);
1589 }
1590
1591 void R_Q3BSP_DrawCollisionSurface(entity_render_t *ent, msurface_t *surface)
1592 {
1593         int i;
1594         rmeshstate_t m;
1595         if (!surface->mesh.num_collisiontriangles)
1596                 return;
1597         memset(&m, 0, sizeof(m));
1598         m.pointer_vertex = surface->mesh.data_collisionvertex3f;
1599         R_Mesh_State(&m);
1600         i = (int)(((size_t)surface) / sizeof(msurface_t));
1601         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
1602         GL_LockArrays(0, surface->mesh.num_collisionvertices);
1603         R_Mesh_Draw(surface->mesh.num_collisionvertices, surface->mesh.num_collisiontriangles, surface->mesh.data_collisionelement3i);
1604         GL_LockArrays(0, 0);
1605 }
1606
1607 void R_Q3BSP_DrawFace_TransparentCallback(const void *voident, int surfacenumber)
1608 {
1609         const entity_render_t *ent = voident;
1610         msurface_t *surface = ent->model->brush.data_surfaces + surfacenumber;
1611         rmeshstate_t m;
1612         R_Mesh_Matrix(&ent->matrix);
1613         memset(&m, 0, sizeof(m));
1614         if ((ent->effects & EF_ADDITIVE) || (surface->texture->textureflags & Q3TEXTUREFLAG_ADDITIVE))
1615                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1616         else
1617                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1618         GL_DepthMask(false);
1619         GL_DepthTest(!(ent->effects & EF_NODEPTHTEST));
1620         m.tex[0] = R_GetTexture(surface->texture->skin.base);
1621         m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1622         // LordHavoc: quake3 was not able to do this; lit transparent surfaces
1623         if (gl_combine.integer)
1624         {
1625                 m.texrgbscale[0] = 2;
1626                 if (r_textureunits.integer >= 2)
1627                 {
1628                         m.tex[1] = R_GetTexture(surface->lightmaptexture);
1629                         m.pointer_texcoord[1] = surface->mesh.data_texcoordlightmap2f;
1630                         GL_Color(ent->colormod[0], ent->colormod[1], ent->colormod[2], ent->alpha);
1631                 }
1632                 else
1633                 {
1634                         if (ent->colormod[0] == 1 && ent->colormod[1] == 1 && ent->colormod[2] == 1 && ent->alpha == 1)
1635                                 m.pointer_color = surface->mesh.data_lightmapcolor4f;
1636                         else
1637                         {
1638                                 int i;
1639                                 for (i = 0;i < surface->mesh.num_vertices;i++)
1640                                 {
1641                                         varray_color4f[i*4+0] = surface->mesh.data_lightmapcolor4f[i*4+0] * ent->colormod[0];
1642                                         varray_color4f[i*4+1] = surface->mesh.data_lightmapcolor4f[i*4+1] * ent->colormod[1];
1643                                         varray_color4f[i*4+2] = surface->mesh.data_lightmapcolor4f[i*4+2] * ent->colormod[2];
1644                                         varray_color4f[i*4+3] = surface->mesh.data_lightmapcolor4f[i*4+3] * ent->alpha;
1645                                 }
1646                                 m.pointer_color = varray_color4f;
1647                         }
1648                 }
1649         }
1650         else
1651         {
1652                 int i;
1653                 for (i = 0;i < surface->mesh.num_vertices;i++)
1654                 {
1655                         varray_color4f[i*4+0] = surface->mesh.data_lightmapcolor4f[i*4+0] * ent->colormod[0] * 2.0f;
1656                         varray_color4f[i*4+1] = surface->mesh.data_lightmapcolor4f[i*4+1] * ent->colormod[1] * 2.0f;
1657                         varray_color4f[i*4+2] = surface->mesh.data_lightmapcolor4f[i*4+2] * ent->colormod[2] * 2.0f;
1658                         varray_color4f[i*4+3] = surface->mesh.data_lightmapcolor4f[i*4+3] * ent->alpha;
1659                 }
1660                 m.pointer_color = varray_color4f;
1661         }
1662         if (surface->texture->textureflags & (Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2))
1663         {
1664                 int i, j;
1665                 float center[3], center2[3], forward[3], right[3], up[3], v[4][3];
1666                 matrix4x4_t matrix1, imatrix1;
1667                 R_Mesh_Matrix(&r_identitymatrix);
1668                 // a single autosprite surface can contain multiple sprites...
1669                 for (j = 0;j < surface->mesh.num_vertices - 3;j += 4)
1670                 {
1671                         VectorClear(center);
1672                         for (i = 0;i < 4;i++)
1673                                 VectorAdd(center, surface->mesh.data_vertex3f + (j+i) * 3, center);
1674                         VectorScale(center, 0.25f, center);
1675                         Matrix4x4_Transform(&ent->matrix, center, center2);
1676                         // FIXME: calculate vectors from triangle edges instead of using texture vectors as an easy way out?
1677                         Matrix4x4_FromVectors(&matrix1, surface->mesh.data_normal3f + j*3, surface->mesh.data_svector3f + j*3, surface->mesh.data_tvector3f + j*3, center);
1678                         Matrix4x4_Invert_Simple(&imatrix1, &matrix1);
1679                         for (i = 0;i < 4;i++)
1680                                 Matrix4x4_Transform(&imatrix1, surface->mesh.data_vertex3f + (j+i)*3, v[i]);
1681                         if (surface->texture->textureflags & Q3TEXTUREFLAG_AUTOSPRITE2)
1682                         {
1683                                 forward[0] = r_vieworigin[0] - center2[0];
1684                                 forward[1] = r_vieworigin[1] - center2[1];
1685                                 forward[2] = 0;
1686                                 VectorNormalize(forward);
1687                                 right[0] = forward[1];
1688                                 right[1] = -forward[0];
1689                                 right[2] = 0;
1690                                 up[0] = 0;
1691                                 up[1] = 0;
1692                                 up[2] = 1;
1693                         }
1694                         else
1695                         {
1696                                 VectorCopy(r_viewforward, forward);
1697                                 VectorCopy(r_viewright, right);
1698                                 VectorCopy(r_viewup, up);
1699                         }
1700                         for (i = 0;i < 4;i++)
1701                                 VectorMAMAMAM(1, center2, v[i][0], forward, v[i][1], right, v[i][2], up, varray_vertex3f + (i+j) * 3);
1702                 }
1703                 m.pointer_vertex = varray_vertex3f;
1704         }
1705         else
1706                 m.pointer_vertex = surface->mesh.data_vertex3f;
1707         R_Mesh_State(&m);
1708         if (surface->texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
1709                 qglDisable(GL_CULL_FACE);
1710         GL_LockArrays(0, surface->mesh.num_vertices);
1711         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1712         GL_LockArrays(0, 0);
1713         if (surface->texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
1714                 qglEnable(GL_CULL_FACE);
1715 }
1716
1717 void R_Q3BSP_DrawFaceList(entity_render_t *ent, texture_t *t, int texturenumsurfaces, msurface_t **texturesurfacelist)
1718 {
1719         int i, texturesurfaceindex;
1720         msurface_t *surface;
1721         qboolean dolightmap;
1722         qboolean dobase;
1723         qboolean doambient;
1724         qboolean doglow;
1725         qboolean dofog;
1726         rmeshstate_t m;
1727         if (!texturenumsurfaces)
1728                 return;
1729         c_faces += texturenumsurfaces;
1730         // gl_lightmaps debugging mode skips normal texturing
1731         if (gl_lightmaps.integer)
1732         {
1733                 GL_DepthMask(true);
1734                 GL_DepthTest(true);
1735                 GL_BlendFunc(GL_ONE, GL_ZERO);
1736                 qglDisable(GL_CULL_FACE);
1737                 memset(&m, 0, sizeof(m));
1738                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1739                 {
1740                         surface = texturesurfacelist[texturesurfaceindex];
1741                         m.tex[0] = R_GetTexture(surface->lightmaptexture);
1742                         m.pointer_texcoord[0] = surface->mesh.data_texcoordlightmap2f;
1743                         if (surface->lightmaptexture)
1744                         {
1745                                 GL_Color(1, 1, 1, 1);
1746                                 m.pointer_color = NULL;
1747                         }
1748                         else
1749                                 m.pointer_color = surface->mesh.data_lightmapcolor4f;
1750                         m.pointer_vertex = surface->mesh.data_vertex3f;
1751                         R_Mesh_State(&m);
1752                         GL_LockArrays(0, surface->mesh.num_vertices);
1753                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1754                         GL_LockArrays(0, 0);
1755                 }
1756                 qglEnable(GL_CULL_FACE);
1757                 return;
1758         }
1759         // transparent surfaces get sorted for later drawing
1760         if ((t->surfaceparms & Q3SURFACEPARM_TRANS) || ent->alpha < 1 || (ent->effects & EF_ADDITIVE))
1761         {
1762                 vec3_t facecenter, center;
1763                 // drawing sky transparently would be too difficult
1764                 if (t->surfaceparms & Q3SURFACEPARM_SKY)
1765                         return;
1766                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1767                 {
1768                         surface = texturesurfacelist[texturesurfaceindex];
1769                         facecenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
1770                         facecenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
1771                         facecenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
1772                         Matrix4x4_Transform(&ent->matrix, facecenter, center);
1773                         R_MeshQueue_AddTransparent(center, R_Q3BSP_DrawFace_TransparentCallback, ent, surface - ent->model->brush.data_surfaces);
1774                 }
1775                 return;
1776         }
1777         // sky surfaces draw sky if needed and render themselves as a depth mask
1778         if (t->surfaceparms & Q3SURFACEPARM_SKY)
1779         {
1780                 if (skyrendernow)
1781                 {
1782                         skyrendernow = false;
1783                         if (skyrendermasked)
1784                                 R_Sky();
1785                 }
1786                 if (!r_q3bsp_renderskydepth.integer)
1787                         return;
1788
1789                 R_Mesh_Matrix(&ent->matrix);
1790
1791                 GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
1792                 if (skyrendermasked)
1793                 {
1794                         // depth-only (masking)
1795                         GL_ColorMask(0,0,0,0);
1796                         // just to make sure that braindead drivers don't draw anything
1797                         // despite that colormask...
1798                         GL_BlendFunc(GL_ZERO, GL_ONE);
1799                 }
1800                 else
1801                 {
1802                         // fog sky
1803                         GL_BlendFunc(GL_ONE, GL_ZERO);
1804                 }
1805                 GL_DepthMask(true);
1806                 GL_DepthTest(true);
1807
1808                 memset(&m, 0, sizeof(m));
1809                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1810                 {
1811                         surface = texturesurfacelist[texturesurfaceindex];
1812                         m.pointer_vertex = surface->mesh.data_vertex3f;
1813                         R_Mesh_State(&m);
1814                         GL_LockArrays(0, surface->mesh.num_vertices);
1815                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1816                         GL_LockArrays(0, 0);
1817                 }
1818                 GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
1819                 return;
1820         }
1821         // anything else is a typical wall, lightmap * texture + glow
1822         dolightmap = (ent->flags & RENDER_LIGHT);
1823         dobase = true;
1824         doambient = r_ambient.value > 0;
1825         doglow = t->skin.glow != NULL;
1826         dofog = fogenabled;
1827         if (t->textureflags & Q3TEXTUREFLAG_TWOSIDED)
1828                 qglDisable(GL_CULL_FACE);
1829         if (!dolightmap && dobase)
1830         {
1831                 dolightmap = false;
1832                 dobase = false;
1833                 GL_DepthMask(true);
1834                 GL_DepthTest(true);
1835                 GL_BlendFunc(GL_ONE, GL_ZERO);
1836                 GL_Color(ent->colormod[0], ent->colormod[1], ent->colormod[2], 1);
1837                 if (t->textureflags & Q3TEXTUREFLAG_TWOSIDED)
1838                         qglDisable(GL_CULL_FACE);
1839                 memset(&m, 0, sizeof(m));
1840                 m.tex[0] = R_GetTexture(t->skin.base);
1841                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1842                 {
1843                         surface = texturesurfacelist[texturesurfaceindex];
1844                         m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1845                         m.pointer_vertex = surface->mesh.data_vertex3f;
1846                         R_Mesh_State(&m);
1847                         GL_LockArrays(0, surface->mesh.num_vertices);
1848                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1849                         GL_LockArrays(0, 0);
1850                 }
1851         }
1852         if (r_lightmapintensity <= 0 && dolightmap && dobase)
1853         {
1854                 dolightmap = false;
1855                 dobase = false;
1856                 GL_DepthMask(true);
1857                 GL_DepthTest(true);
1858                 GL_BlendFunc(GL_ONE, GL_ZERO);
1859                 GL_Color(0, 0, 0, 1);
1860                 memset(&m, 0, sizeof(m));
1861                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1862                 {
1863                         surface = texturesurfacelist[texturesurfaceindex];
1864                         m.pointer_vertex = surface->mesh.data_vertex3f;
1865                         R_Mesh_State(&m);
1866                         GL_LockArrays(0, surface->mesh.num_vertices);
1867                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1868                         GL_LockArrays(0, 0);
1869                 }
1870         }
1871         if (r_textureunits.integer >= 2 && gl_combine.integer && dolightmap && dobase)
1872         {
1873                 // dualtexture combine
1874                 dolightmap = false;
1875                 dobase = false;
1876                 GL_DepthMask(true);
1877                 GL_DepthTest(true);
1878                 GL_BlendFunc(GL_ONE, GL_ZERO);
1879                 memset(&m, 0, sizeof(m));
1880                 m.tex[0] = R_GetTexture(t->skin.base);
1881                 GL_Color(r_lightmapintensity * ent->colormod[0], r_lightmapintensity * ent->colormod[1], r_lightmapintensity * ent->colormod[2], 1);
1882                 m.pointer_color = NULL;
1883                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1884                 {
1885                         surface = texturesurfacelist[texturesurfaceindex];
1886                         if (!surface->lightmaptexture)
1887                                 continue;
1888                         m.tex[1] = R_GetTexture(surface->lightmaptexture);
1889                         m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1890                         m.pointer_texcoord[1] = surface->mesh.data_texcoordlightmap2f;
1891                         m.texrgbscale[1] = 2;
1892                         m.pointer_vertex = surface->mesh.data_vertex3f;
1893                         R_Mesh_State(&m);
1894                         GL_LockArrays(0, surface->mesh.num_vertices);
1895                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1896                         GL_LockArrays(0, 0);
1897                 }
1898                 if (r_lightmapintensity == 1 && ent->colormod[0] == 1 && ent->colormod[1] == 1 && ent->colormod[2] == 1)
1899                 {
1900                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1901                         {
1902                                 surface = texturesurfacelist[texturesurfaceindex];
1903                                 if (surface->lightmaptexture)
1904                                         continue;
1905                                 m.tex[1] = R_GetTexture(surface->lightmaptexture);
1906                                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1907                                 m.pointer_texcoord[1] = surface->mesh.data_texcoordlightmap2f;
1908                                 m.texrgbscale[1] = 2;
1909                                 m.pointer_color = surface->mesh.data_lightmapcolor4f;
1910                                 m.pointer_vertex = surface->mesh.data_vertex3f;
1911                                 R_Mesh_State(&m);
1912                                 GL_LockArrays(0, surface->mesh.num_vertices);
1913                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1914                                 GL_LockArrays(0, 0);
1915                         }
1916                 }
1917                 else
1918                 {
1919                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1920                         {
1921                                 surface = texturesurfacelist[texturesurfaceindex];
1922                                 if (surface->lightmaptexture)
1923                                         continue;
1924                                 m.tex[1] = R_GetTexture(surface->lightmaptexture);
1925                                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1926                                 m.pointer_texcoord[1] = surface->mesh.data_texcoordlightmap2f;
1927                                 m.texrgbscale[1] = 2;
1928                                 m.pointer_color = varray_color4f;
1929                                 for (i = 0;i < surface->mesh.num_vertices;i++)
1930                                 {
1931                                         varray_color4f[i*4+0] = surface->mesh.data_lightmapcolor4f[i*4+0] * ent->colormod[0] * r_lightmapintensity;
1932                                         varray_color4f[i*4+1] = surface->mesh.data_lightmapcolor4f[i*4+1] * ent->colormod[1] * r_lightmapintensity;
1933                                         varray_color4f[i*4+2] = surface->mesh.data_lightmapcolor4f[i*4+2] * ent->colormod[2] * r_lightmapintensity;
1934                                         varray_color4f[i*4+3] = surface->mesh.data_lightmapcolor4f[i*4+3];
1935                                 }
1936                                 m.pointer_vertex = surface->mesh.data_vertex3f;
1937                                 R_Mesh_State(&m);
1938                                 GL_LockArrays(0, surface->mesh.num_vertices);
1939                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1940                                 GL_LockArrays(0, 0);
1941                         }
1942                 }
1943         }
1944         // single texture
1945         if (dolightmap)
1946         {
1947                 GL_DepthMask(true);
1948                 GL_DepthTest(true);
1949                 GL_BlendFunc(GL_ONE, GL_ZERO);
1950                 memset(&m, 0, sizeof(m));
1951                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1952                 {
1953                         surface = texturesurfacelist[texturesurfaceindex];
1954                         m.tex[0] = R_GetTexture(surface->lightmaptexture);
1955                         m.pointer_texcoord[0] = surface->mesh.data_texcoordlightmap2f;
1956                         if (surface->lightmaptexture)
1957                                 m.pointer_color = NULL;
1958                         else
1959                                 m.pointer_color = surface->mesh.data_lightmapcolor4f;
1960                         m.pointer_vertex = surface->mesh.data_vertex3f;
1961                         R_Mesh_State(&m);
1962                         GL_LockArrays(0, surface->mesh.num_vertices);
1963                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1964                         GL_LockArrays(0, 0);
1965                 }
1966         }
1967         if (dobase)
1968         {
1969                 GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
1970                 GL_DepthMask(false);
1971                 GL_DepthTest(true);
1972                 GL_Color(r_lightmapintensity * ent->colormod[0], r_lightmapintensity * ent->colormod[1], r_lightmapintensity * ent->colormod[2], 1);
1973                 memset(&m, 0, sizeof(m));
1974                 m.tex[0] = R_GetTexture(t->skin.base);
1975                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1976                 {
1977                         surface = texturesurfacelist[texturesurfaceindex];
1978                         m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1979                         m.pointer_vertex = surface->mesh.data_vertex3f;
1980                         R_Mesh_State(&m);
1981                         GL_LockArrays(0, surface->mesh.num_vertices);
1982                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1983                         GL_LockArrays(0, 0);
1984                 }
1985         }
1986         if (doambient)
1987         {
1988                 GL_BlendFunc(GL_ONE, GL_ONE);
1989                 GL_DepthMask(false);
1990                 GL_DepthTest(true);
1991                 GL_Color(r_ambient.value * (1.0f / 128.0f) * ent->colormod[0], r_ambient.value * (1.0f / 128.0f) * ent->colormod[1], r_ambient.value * (1.0f / 128.0f) * ent->colormod[2], 1);
1992                 memset(&m, 0, sizeof(m));
1993                 m.tex[0] = R_GetTexture(t->skin.base);
1994                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1995                 {
1996                         surface = texturesurfacelist[texturesurfaceindex];
1997                         m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
1998                         m.pointer_vertex = surface->mesh.data_vertex3f;
1999                         R_Mesh_State(&m);
2000                         GL_LockArrays(0, surface->mesh.num_vertices);
2001                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
2002                         GL_LockArrays(0, 0);
2003                 }
2004         }
2005         if (doglow)
2006         {
2007                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2008                 GL_DepthMask(false);
2009                 GL_DepthTest(true);
2010                 GL_Color(1, 1, 1, 1);
2011                 memset(&m, 0, sizeof(m));
2012                 m.tex[0] = R_GetTexture(t->skin.glow);
2013                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
2014                 {
2015                         surface = texturesurfacelist[texturesurfaceindex];
2016                         m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
2017                         m.pointer_vertex = surface->mesh.data_vertex3f;
2018                         R_Mesh_State(&m);
2019                         GL_LockArrays(0, surface->mesh.num_vertices);
2020                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
2021                         GL_LockArrays(0, 0);
2022                 }
2023         }
2024         if (dofog)
2025         {
2026                 float modelorg[3];
2027                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
2028                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2029                 GL_DepthMask(false);
2030                 GL_DepthTest(true);
2031                 GL_Color(1, 1, 1, 1);
2032                 memset(&m, 0, sizeof(m));
2033                 m.tex[0] = R_GetTexture(t->skin.fog);
2034                 m.pointer_color = varray_color4f;
2035                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
2036                 {
2037                         surface = texturesurfacelist[texturesurfaceindex];
2038                         if (m.tex[0])
2039                                 m.pointer_texcoord[0] = surface->mesh.data_texcoordtexture2f;
2040                         m.pointer_vertex = surface->mesh.data_vertex3f;
2041                         R_Mesh_State(&m);
2042                         RSurf_FogPassColors_Vertex3f_Color4f(surface->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], 1, 1, surface->mesh.num_vertices, modelorg);
2043                         GL_LockArrays(0, surface->mesh.num_vertices);
2044                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
2045                         GL_LockArrays(0, 0);
2046                 }
2047         }
2048         if (t->textureflags & Q3TEXTUREFLAG_TWOSIDED)
2049                 qglEnable(GL_CULL_FACE);
2050 }
2051
2052 void R_Q3BSP_DrawFaces(entity_render_t *ent, int skyfaces)
2053 {
2054         int i, j, f, flagsmask, flags;
2055         msurface_t *surface;
2056         model_t *model = ent->model;
2057         texture_t *t;
2058         const int maxfaces = 1024;
2059         int numsurfaces = 0;
2060         msurface_t *surfacelist[1024];
2061         R_Mesh_Matrix(&ent->matrix);
2062         flagsmask = Q3SURFACEFLAG_NODRAW | Q3SURFACEFLAG_SKY;
2063         if (skyfaces)
2064                 flags = Q3SURFACEFLAG_SKY;
2065         else
2066                 flags = 0;
2067         t = NULL;
2068         f = 0;
2069         numsurfaces = 0;
2070         for (i = 0, j = model->firstmodelsurface;i < model->nummodelsurfaces;i++, j++)
2071         {
2072                 if (ent != r_refdef.worldentity || r_worldsurfacevisible[j])
2073                 {
2074                         surface = model->brush.data_surfaces + j;
2075                         if (t != surface->texture)
2076                         {
2077                                 if (numsurfaces)
2078                                 {
2079                                         R_Q3BSP_DrawFaceList(ent, t, numsurfaces, surfacelist);
2080                                         numsurfaces = 0;
2081                                 }
2082                                 t = surface->texture;
2083                                 f = t->surfaceflags & flagsmask;
2084                         }
2085                         if (f == flags)
2086                         {
2087                                 if (!surface->mesh.num_triangles)
2088                                         continue;
2089                                 surfacelist[numsurfaces++] = surface;
2090                                 if (numsurfaces >= maxfaces)
2091                                 {
2092                                         R_Q3BSP_DrawFaceList(ent, t, numsurfaces, surfacelist);
2093                                         numsurfaces = 0;
2094                                 }
2095                         }
2096                 }
2097         }
2098         if (numsurfaces)
2099                 R_Q3BSP_DrawFaceList(ent, t, numsurfaces, surfacelist);
2100 }
2101
2102 void R_Q3BSP_DrawSky(entity_render_t *ent)
2103 {
2104         if (r_drawcollisionbrushes.integer < 2)
2105                 R_Q3BSP_DrawFaces(ent, true);
2106 }
2107
2108 void R_Q3BSP_Draw(entity_render_t *ent)
2109 {
2110         if (r_drawcollisionbrushes.integer < 2)
2111                 R_Q3BSP_DrawFaces(ent, false);
2112         if (r_drawcollisionbrushes.integer >= 1)
2113         {
2114                 int i;
2115                 model_t *model = ent->model;
2116                 msurface_t *surface;
2117                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
2118                 GL_DepthMask(false);
2119                 GL_DepthTest(true);
2120                 qglPolygonOffset(r_drawcollisionbrushes_polygonfactor.value, r_drawcollisionbrushes_polygonoffset.value);
2121                 for (i = 0;i < model->brushq3.data_models[model->brush.submodel].numbrushes;i++)
2122                         if (model->brushq3.data_models[model->brush.submodel].firstbrush[i].colbrushf && model->brushq3.data_models[model->brush.submodel].firstbrush[i].colbrushf->numtriangles)
2123                                 R_DrawCollisionBrush(model->brushq3.data_models[model->brush.submodel].firstbrush[i].colbrushf);
2124                 for (i = 0, surface = model->brushq3.data_models[model->brush.submodel].firstsurface;i < model->brushq3.data_models[model->brush.submodel].numsurfaces;i++, surface++)
2125                         if (surface->mesh.num_collisiontriangles)
2126                                 R_Q3BSP_DrawCollisionSurface(ent, surface);
2127                 qglPolygonOffset(0, 0);
2128         }
2129 }
2130
2131 void R_Q3BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outclusterlist, qbyte *outclusterpvs, int *outnumclusterspointer, int *outsurfacelist, qbyte *outsurfacepvs, int *outnumsurfacespointer)
2132 {
2133         model_t *model = ent->model;
2134         vec3_t lightmins, lightmaxs;
2135         int t, leafindex, leafsurfaceindex, surfaceindex, triangleindex, outnumclusters = 0, outnumsurfaces = 0;
2136         const int *e;
2137         const float *v[3];
2138         msurface_t *surface;
2139         mleaf_t *leaf;
2140         const qbyte *pvs;
2141         lightmins[0] = relativelightorigin[0] - lightradius;
2142         lightmins[1] = relativelightorigin[1] - lightradius;
2143         lightmins[2] = relativelightorigin[2] - lightradius;
2144         lightmaxs[0] = relativelightorigin[0] + lightradius;
2145         lightmaxs[1] = relativelightorigin[1] + lightradius;
2146         lightmaxs[2] = relativelightorigin[2] + lightradius;
2147         *outnumclusterspointer = 0;
2148         *outnumsurfacespointer = 0;
2149         memset(outclusterpvs, 0, model->brush.num_pvsclusterbytes);
2150         memset(outsurfacepvs, 0, (model->nummodelsurfaces + 7) >> 3);
2151         if (model == NULL)
2152         {
2153                 VectorCopy(lightmins, outmins);
2154                 VectorCopy(lightmaxs, outmaxs);
2155                 return;
2156         }
2157         VectorCopy(relativelightorigin, outmins);
2158         VectorCopy(relativelightorigin, outmaxs);
2159         if (model->brush.GetPVS)
2160                 pvs = model->brush.GetPVS(model, relativelightorigin);
2161         else
2162                 pvs = NULL;
2163         // FIXME: use BSP recursion as lights are often small
2164         for (leafindex = 0, leaf = model->brush.data_leafs;leafindex < model->brush.num_leafs;leafindex++, leaf++)
2165         {
2166                 if (BoxesOverlap(lightmins, lightmaxs, leaf->mins, leaf->maxs) && (pvs == NULL || CHECKPVSBIT(pvs, leaf->clusterindex)))
2167                 {
2168                         outmins[0] = min(outmins[0], leaf->mins[0]);
2169                         outmins[1] = min(outmins[1], leaf->mins[1]);
2170                         outmins[2] = min(outmins[2], leaf->mins[2]);
2171                         outmaxs[0] = max(outmaxs[0], leaf->maxs[0]);
2172                         outmaxs[1] = max(outmaxs[1], leaf->maxs[1]);
2173                         outmaxs[2] = max(outmaxs[2], leaf->maxs[2]);
2174                         if (outclusterpvs)
2175                         {
2176                                 if (!CHECKPVSBIT(outclusterpvs, leaf->clusterindex))
2177                                 {
2178                                         SETPVSBIT(outclusterpvs, leaf->clusterindex);
2179                                         outclusterlist[outnumclusters++] = leaf->clusterindex;
2180                                 }
2181                         }
2182                         if (outsurfacepvs)
2183                         {
2184                                 for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
2185                                 {
2186                                         surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
2187                                         surface = model->brush.data_surfaces + surfaceindex;
2188                                         if (!CHECKPVSBIT(outsurfacepvs, surfaceindex))
2189                                         {
2190                                                 if (BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs) && !(surface->texture->surfaceparms & Q3SURFACEPARM_TRANS) && !(surface->texture->surfaceflags & (Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NODRAW)) && surface->mesh.num_triangles)
2191                                                 {
2192                                                         if (surface->texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
2193                                                         {
2194                                                                 for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->mesh.num_triangles;triangleindex++, t++, e += 3)
2195                                                                 {
2196                                                                         v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
2197                                                                         v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
2198                                                                         v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
2199                                                                         if (lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
2200                                                                         {
2201                                                                                 SETPVSBIT(outsurfacepvs, surfaceindex);
2202                                                                                 outsurfacelist[outnumsurfaces++] = surfaceindex;
2203                                                                                 break;
2204                                                                         }
2205                                                                 }
2206                                                         }
2207                                                         else
2208                                                         {
2209                                                                 for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->mesh.num_triangles;triangleindex++, t++, e += 3)
2210                                                                 {
2211                                                                         v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
2212                                                                         v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
2213                                                                         v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
2214                                                                         if (PointInfrontOfTriangle(relativelightorigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
2215                                                                         {
2216                                                                                 SETPVSBIT(outsurfacepvs, surfaceindex);
2217                                                                                 outsurfacelist[outnumsurfaces++] = surfaceindex;
2218                                                                                 break;
2219                                                                         }
2220                                                                 }
2221                                                         }
2222                                                 }
2223                                         }
2224                                 }
2225                         }
2226                 }
2227         }
2228
2229         // limit combined leaf box to light boundaries
2230         outmins[0] = max(outmins[0], lightmins[0]);
2231         outmins[1] = max(outmins[1], lightmins[1]);
2232         outmins[2] = max(outmins[2], lightmins[2]);
2233         outmaxs[0] = min(outmaxs[0], lightmaxs[0]);
2234         outmaxs[1] = min(outmaxs[1], lightmaxs[1]);
2235         outmaxs[2] = min(outmaxs[2], lightmaxs[2]);
2236
2237         *outnumclusterspointer = outnumclusters;
2238         *outnumsurfacespointer = outnumsurfaces;
2239 }
2240
2241 void R_Q3BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
2242 {
2243         model_t *model = ent->model;
2244         vec3_t lightmins, lightmaxs;
2245         msurface_t *surface;
2246         int surfacelistindex;
2247         if (r_drawcollisionbrushes.integer < 2)
2248         {
2249                 lightmins[0] = relativelightorigin[0] - lightradius;
2250                 lightmins[1] = relativelightorigin[1] - lightradius;
2251                 lightmins[2] = relativelightorigin[2] - lightradius;
2252                 lightmaxs[0] = relativelightorigin[0] + lightradius;
2253                 lightmaxs[1] = relativelightorigin[1] + lightradius;
2254                 lightmaxs[2] = relativelightorigin[2] + lightradius;
2255                 R_Mesh_Matrix(&ent->matrix);
2256                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
2257                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
2258                 {
2259                         surface = model->brush.data_surfaces + surfacelist[surfacelistindex];
2260                         // FIXME: check some manner of surface->rendermode here?
2261                         if (!(surface->texture->surfaceflags & Q3SURFACEFLAG_NODRAW) && !(surface->texture->surfaceparms & (Q3SURFACEPARM_SKY | Q3SURFACEPARM_TRANS)) && !(surface->texture->textureflags & Q3TEXTUREFLAG_TWOSIDED))
2262                                 R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->mesh.num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
2263                 }
2264                 R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, lightradius + model->radius + r_shadow_projectdistance.value, numshadowmark, shadowmarklist);
2265         }
2266 }
2267
2268 void R_Q3BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap, vec_t ambientscale, vec_t diffusescale, vec_t specularscale, int numsurfaces, const int *surfacelist)
2269 {
2270         model_t *model = ent->model;
2271         vec3_t lightmins, lightmaxs, modelorg;
2272         msurface_t *surface;
2273         int surfacelistindex;
2274         if (r_drawcollisionbrushes.integer < 2)
2275         {
2276                 lightmins[0] = relativelightorigin[0] - lightradius;
2277                 lightmins[1] = relativelightorigin[1] - lightradius;
2278                 lightmins[2] = relativelightorigin[2] - lightradius;
2279                 lightmaxs[0] = relativelightorigin[0] + lightradius;
2280                 lightmaxs[1] = relativelightorigin[1] + lightradius;
2281                 lightmaxs[2] = relativelightorigin[2] + lightradius;
2282                 R_Mesh_Matrix(&ent->matrix);
2283                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
2284                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
2285                 {
2286                         surface = model->brush.data_surfaces + surfacelist[surfacelistindex];
2287                         if (r_shadow_compilingrtlight)
2288                         {
2289                                 // if compiling an rtlight, capture the mesh
2290                                 Mod_ShadowMesh_AddMesh(r_shadow_mempool, r_shadow_compilingrtlight->static_meshchain_light, surface->texture->skin.base, surface->texture->skin.gloss, surface->texture->skin.nmap, surface->mesh.data_vertex3f, surface->mesh.data_svector3f, surface->mesh.data_tvector3f, surface->mesh.data_normal3f, surface->mesh.data_texcoordtexture2f, surface->mesh.num_triangles, surface->mesh.data_element3i);
2291                         }
2292                         else if (!(surface->texture->surfaceflags & Q3SURFACEFLAG_NODRAW) && surface->mesh.num_triangles)
2293                         {
2294                                 if (surface->texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
2295                                         qglDisable(GL_CULL_FACE);
2296                                 R_Shadow_RenderLighting(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i, surface->mesh.data_vertex3f, surface->mesh.data_svector3f, surface->mesh.data_tvector3f, surface->mesh.data_normal3f, surface->mesh.data_texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, surface->texture->skin.base, surface->texture->skin.nmap, surface->texture->skin.gloss, lightcubemap, ambientscale, diffusescale, specularscale);
2297                                 if (surface->texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
2298                                         qglEnable(GL_CULL_FACE);
2299                         }
2300                 }
2301         }
2302 }
2303
2304 #if 0
2305 static void gl_surf_start(void)
2306 {
2307 }
2308
2309 static void gl_surf_shutdown(void)
2310 {
2311 }
2312
2313 static void gl_surf_newmap(void)
2314 {
2315 }
2316 #endif
2317
2318 void GL_Surf_Init(void)
2319 {
2320         int i;
2321         dlightdivtable[0] = 4194304;
2322         for (i = 1;i < 32768;i++)
2323                 dlightdivtable[i] = 4194304 / (i << 7);
2324
2325         Cvar_RegisterVariable(&r_ambient);
2326         Cvar_RegisterVariable(&r_drawportals);
2327         Cvar_RegisterVariable(&r_testvis);
2328         Cvar_RegisterVariable(&r_floatbuildlightmap);
2329         Cvar_RegisterVariable(&r_detailtextures);
2330         Cvar_RegisterVariable(&r_surfaceworldnode);
2331         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonfactor);
2332         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonoffset);
2333         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
2334         Cvar_RegisterVariable(&gl_lightmaps);
2335
2336         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
2337 }
2338