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", "1"};
  38 cvar_t r_drawcollisionbrushes_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "-4"};
  39
  40 static int dlightdivtable[32768];
  41
  42 static int R_IntAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
  43 {
  44         int sdtable[256], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract, k;
  45         unsigned int *bl;
  46         float dist, impact[3], local[3];
  47
  48         lit = false;
  49
  50         smax = (surf->extents[0] >> 4) + 1;
  51         tmax = (surf->extents[1] >> 4) + 1;
  52         smax3 = smax * 3;
  53
  54         for (lnum = 0; lnum < r_numdlights; lnum++)
  55         {
  56                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
  57                         continue;                                       // not lit by this light
  58
  59                 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
  60                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
  61
  62                 // for comparisons to minimum acceptable light
  63                 // compensate for LIGHTOFFSET
  64                 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
  65
  66                 dist2 = dist * dist;
  67                 dist2 += LIGHTOFFSET;
  68                 if (dist2 >= maxdist)
  69                         continue;
  70
  71                 if (surf->plane->type < 3)
  72                 {
  73                         VectorCopy(local, impact);
  74                         impact[surf->plane->type] -= dist;
  75                 }
  76                 else
  77                 {
  78                         impact[0] = local[0] - surf->plane->normal[0] * dist;
  79                         impact[1] = local[1] - surf->plane->normal[1] * dist;
  80                         impact[2] = local[2] - surf->plane->normal[2] * dist;
  81                 }
  82
  83                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
  84                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
  85
  86                 s = bound(0, impacts, smax * 16) - impacts;
  87                 t = bound(0, impactt, tmax * 16) - impactt;
  88                 i = s * s + t * t + dist2;
  89                 if (i > maxdist)
  90                         continue;
  91
  92                 // reduce calculations
  93                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
  94                         sdtable[s] = i * i + dist2;
  95
  96                 maxdist3 = maxdist - dist2;
  97
  98                 // convert to 8.8 blocklights format
  99                 red = r_dlight[lnum].light[0] * (1.0f / 128.0f);
 100                 green = r_dlight[lnum].light[1] * (1.0f / 128.0f);
 101                 blue = r_dlight[lnum].light[2] * (1.0f / 128.0f);
 102                 subtract = (int) (r_dlight[lnum].subtract * 4194304.0f);
 103                 bl = intblocklights;
 104
 105                 i = impactt;
 106                 for (t = 0;t < tmax;t++, i -= 16)
 107                 {
 108                         td = i * i;
 109                         // make sure some part of it is visible on this line
 110                         if (td < maxdist3)
 111                         {
 112                                 maxdist2 = maxdist - td;
 113                                 for (s = 0;s < smax;s++)
 114                                 {
 115                                         if (sdtable[s] < maxdist2)
 116                                         {
 117                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
 118                                                 if (k > 0)
 119                                                 {
 120                                                         bl[0] += (red   * k);
 121                                                         bl[1] += (green * k);
 122                                                         bl[2] += (blue  * k);
 123                                                         lit = true;
 124                                                 }
 125                                         }
 126                                         bl += 3;
 127                                 }
 128                         }
 129                         else // skip line
 130                                 bl += smax3;
 131                 }
 132         }
 133         return lit;
 134 }
 135
 136 static int R_FloatAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
 137 {
 138         int lnum, s, t, smax, tmax, smax3, lit, impacts, impactt;
 139         float sdtable[256], *bl, k, dist, dist2, maxdist, maxdist2, maxdist3, td1, td, red, green, blue, impact[3], local[3], subtract;
 140
 141         lit = false;
 142
 143         smax = (surf->extents[0] >> 4) + 1;
 144         tmax = (surf->extents[1] >> 4) + 1;
 145         smax3 = smax * 3;
 146
 147         for (lnum = 0; lnum < r_numdlights; lnum++)
 148         {
 149                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
 150                         continue;                                       // not lit by this light
 151
 152                 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
 153                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
 154
 155                 // for comparisons to minimum acceptable light
 156                 // compensate for LIGHTOFFSET
 157                 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
 158
 159                 dist2 = dist * dist;
 160                 dist2 += LIGHTOFFSET;
 161                 if (dist2 >= maxdist)
 162                         continue;
 163
 164                 if (surf->plane->type < 3)
 165                 {
 166                         VectorCopy(local, impact);
 167                         impact[surf->plane->type] -= dist;
 168                 }
 169                 else
 170                 {
 171                         impact[0] = local[0] - surf->plane->normal[0] * dist;
 172                         impact[1] = local[1] - surf->plane->normal[1] * dist;
 173                         impact[2] = local[2] - surf->plane->normal[2] * dist;
 174                 }
 175
 176                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 177                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 178
 179                 td = bound(0, impacts, smax * 16) - impacts;
 180                 td1 = bound(0, impactt, tmax * 16) - impactt;
 181                 td = td * td + td1 * td1 + dist2;
 182                 if (td > maxdist)
 183                         continue;
 184
 185                 // reduce calculations
 186                 for (s = 0, td1 = impacts; s < smax; s++, td1 -= 16.0f)
 187                         sdtable[s] = td1 * td1 + dist2;
 188
 189                 maxdist3 = maxdist - dist2;
 190
 191                 // convert to 8.8 blocklights format
 192                 red = r_dlight[lnum].light[0];
 193                 green = r_dlight[lnum].light[1];
 194                 blue = r_dlight[lnum].light[2];
 195                 subtract = r_dlight[lnum].subtract * 32768.0f;
 196                 bl = floatblocklights;
 197
 198                 td1 = impactt;
 199                 for (t = 0;t < tmax;t++, td1 -= 16.0f)
 200                 {
 201                         td = td1 * td1;
 202                         // make sure some part of it is visible on this line
 203                         if (td < maxdist3)
 204                         {
 205                                 maxdist2 = maxdist - td;
 206                                 for (s = 0;s < smax;s++)
 207                                 {
 208                                         if (sdtable[s] < maxdist2)
 209                                         {
 210                                                 k = (32768.0f / (sdtable[s] + td)) - subtract;
 211                                                 bl[0] += red   * k;
 212                                                 bl[1] += green * k;
 213                                                 bl[2] += blue  * k;
 214                                                 lit = true;
 215                                         }
 216                                         bl += 3;
 217                                 }
 218                         }
 219                         else // skip line
 220                                 bl += smax3;
 221                 }
 222         }
 223         return lit;
 224 }
 225
 226 /*
 227 ===============
 228 R_BuildLightMap
 229
 230 Combine and scale multiple lightmaps into the 8.8 format in blocklights
 231 ===============
 232 */
 233 static void R_BuildLightMap (const entity_render_t *ent, msurface_t *surf)
 234 {
 235         if (!r_floatbuildlightmap.integer)
 236         {
 237                 int smax, tmax, i, j, size, size3, shift, maps, stride, l;
 238                 unsigned int *bl, scale;
 239                 qbyte *lightmap, *out, *stain;
 240
 241                 // update cached lighting info
 242                 surf->cached_dlight = 0;
 243
 244                 smax = (surf->extents[0]>>4)+1;
 245                 tmax = (surf->extents[1]>>4)+1;
 246                 size = smax*tmax;
 247                 size3 = size*3;
 248                 lightmap = surf->samples;
 249
 250         // set to full bright if no light data
 251                 bl = intblocklights;
 252                 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->brushq1.lightdata)
 253                 {
 254                         for (i = 0;i < size3;i++)
 255                                 bl[i] = 255*256;
 256                 }
 257                 else
 258                 {
 259         // clear to no light
 260                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 261                         if (j)
 262                         {
 263                                 for (i = 0;i < size3;i++)
 264                                         *bl++ = j;
 265                         }
 266                         else
 267                                 memset(bl, 0, size*3*sizeof(unsigned int));
 268
 269                         if (surf->dlightframe == r_framecount)
 270                         {
 271                                 surf->cached_dlight = R_IntAddDynamicLights(&ent->inversematrix, surf);
 272                                 if (surf->cached_dlight)
 273                                         c_light_polys++;
 274                         }
 275
 276         // add all the lightmaps
 277                         if (lightmap)
 278                         {
 279                                 bl = intblocklights;
 280                                 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 281                                         for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 282                                                 bl[i] += lightmap[i] * scale;
 283                         }
 284                 }
 285
 286                 stain = surf->stainsamples;
 287                 bl = intblocklights;
 288                 out = templight;
 289                 // deal with lightmap brightness scale
 290                 shift = 7 + r_lightmapscalebit + 8;
 291                 if (ent->model->brushq1.lightmaprgba)
 292                 {
 293                         stride = (surf->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++) >> shift;*out++ = min(l, 255);
 299                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 300                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 301                                         *out++ = 255;
 302                                 }
 303                         }
 304                 }
 305                 else
 306                 {
 307                         stride = (surf->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++) >> shift;*out++ = min(l, 255);
 313                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 314                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 315                                 }
 316                         }
 317                 }
 318
 319                 R_UpdateTexture(surf->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                 surf->cached_dlight = 0;
 329
 330                 smax = (surf->extents[0]>>4)+1;
 331                 tmax = (surf->extents[1]>>4)+1;
 332                 size = smax*tmax;
 333                 size3 = size*3;
 334                 lightmap = surf->samples;
 335
 336         // set to full bright if no light data
 337                 bl = floatblocklights;
 338                 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->brushq1.lightdata)
 339                         j = 255*256;
 340                 else
 341                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 342
 343                 // clear to no light
 344                 if (j)
 345                 {
 346                         for (i = 0;i < size3;i++)
 347                                 *bl++ = j;
 348                 }
 349                 else
 350                         memset(bl, 0, size*3*sizeof(float));
 351
 352                 if (surf->dlightframe == r_framecount)
 353                 {
 354                         surf->cached_dlight = R_FloatAddDynamicLights(&ent->inversematrix, surf);
 355                         if (surf->cached_dlight)
 356                                 c_light_polys++;
 357                 }
 358
 359                 // add all the lightmaps
 360                 if (lightmap)
 361                 {
 362                         bl = floatblocklights;
 363                         for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 364                                 for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 365                                         bl[i] += lightmap[i] * scale;
 366                 }
 367
 368                 stain = surf->stainsamples;
 369                 bl = floatblocklights;
 370                 out = templight;
 371                 // deal with lightmap brightness scale
 372                 scale = 1.0f / (1 << (7 + r_lightmapscalebit + 8));
 373                 if (ent->model->brushq1.lightmaprgba)
 374                 {
 375                         stride = (surf->lightmaptexturestride - smax) * 4;
 376                         for (i = 0;i < tmax;i++, out += stride)
 377                         {
 378                                 for (j = 0;j < smax;j++)
 379                                 {
 380                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 381                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 382                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 383                                         *out++ = 255;
 384                                 }
 385                         }
 386                 }
 387                 else
 388                 {
 389                         stride = (surf->lightmaptexturestride - smax) * 3;
 390                         for (i = 0;i < tmax;i++, out += stride)
 391                         {
 392                                 for (j = 0;j < smax;j++)
 393                                 {
 394                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 395                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 396                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 397                                 }
 398                         }
 399                 }
 400
 401                 R_UpdateTexture(surf->lightmaptexture, templight);
 402         }
 403 }
 404
 405 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 406 {
 407         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 408         msurface_t *surf, *endsurf;
 409         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 410         qbyte *bl;
 411         vec3_t impact;
 412
 413         maxdist = radius * radius;
 414         invradius = 1.0f / radius;
 415
 416 loc0:
 417         if (node->contents < 0)
 418                 return;
 419         ndist = PlaneDiff(origin, node->plane);
 420         if (ndist > radius)
 421         {
 422                 node = node->children[0];
 423                 goto loc0;
 424         }
 425         if (ndist < -radius)
 426         {
 427                 node = node->children[1];
 428                 goto loc0;
 429         }
 430
 431         dist2 = ndist * ndist;
 432         maxdist3 = maxdist - dist2;
 433
 434         if (node->plane->type < 3)
 435         {
 436                 VectorCopy(origin, impact);
 437                 impact[node->plane->type] -= ndist;
 438         }
 439         else
 440         {
 441                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 442                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 443                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 444         }
 445
 446         for (surf = model->brushq1.surfaces + node->firstsurface, endsurf = surf + node->numsurfaces;surf < endsurf;surf++)
 447         {
 448                 if (surf->stainsamples)
 449                 {
 450                         smax = (surf->extents[0] >> 4) + 1;
 451                         tmax = (surf->extents[1] >> 4) + 1;
 452
 453                         impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 454                         impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 455
 456                         s = bound(0, impacts, smax * 16) - impacts;
 457                         t = bound(0, impactt, tmax * 16) - impactt;
 458                         i = s * s + t * t + dist2;
 459                         if (i > maxdist)
 460                                 continue;
 461
 462                         // reduce calculations
 463                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 464                                 sdtable[s] = i * i + dist2;
 465
 466                         bl = surf->stainsamples;
 467                         smax3 = smax * 3;
 468                         stained = false;
 469
 470                         i = impactt;
 471                         for (t = 0;t < tmax;t++, i -= 16)
 472                         {
 473                                 td = i * i;
 474                                 // make sure some part of it is visible on this line
 475                                 if (td < maxdist3)
 476                                 {
 477                                         maxdist2 = maxdist - td;
 478                                         for (s = 0;s < smax;s++)
 479                                         {
 480                                                 if (sdtable[s] < maxdist2)
 481                                                 {
 482                                                         ratio = lhrandom(0.0f, 1.0f);
 483                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 484                                                         if (a >= (1.0f / 64.0f))
 485                                                         {
 486                                                                 if (a > 1)
 487                                                                         a = 1;
 488                                                                 bl[0] = (qbyte) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 489                                                                 bl[1] = (qbyte) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 490                                                                 bl[2] = (qbyte) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 491                                                                 stained = true;
 492                                                         }
 493                                                 }
 494                                                 bl += 3;
 495                                         }
 496                                 }
 497                                 else // skip line
 498                                         bl += smax3;
 499                         }
 500                         // force lightmap upload
 501                         if (stained)
 502                                 surf->cached_dlight = true;
 503                 }
 504         }
 505
 506         if (node->children[0]->contents >= 0)
 507         {
 508                 if (node->children[1]->contents >= 0)
 509                 {
 510                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 511                         node = node->children[1];
 512                         goto loc0;
 513                 }
 514                 else
 515                 {
 516                         node = node->children[0];
 517                         goto loc0;
 518                 }
 519         }
 520         else if (node->children[1]->contents >= 0)
 521         {
 522                 node = node->children[1];
 523                 goto loc0;
 524         }
 525 }
 526
 527 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)
 528 {
 529         int n;
 530         float fcolor[8];
 531         entity_render_t *ent;
 532         model_t *model;
 533         vec3_t org;
 534         if (cl.worldmodel == NULL || !cl.worldmodel->brushq1.nodes)
 535                 return;
 536         fcolor[0] = cr1;
 537         fcolor[1] = cg1;
 538         fcolor[2] = cb1;
 539         fcolor[3] = ca1 * (1.0f / 64.0f);
 540         fcolor[4] = cr2 - cr1;
 541         fcolor[5] = cg2 - cg1;
 542         fcolor[6] = cb2 - cb1;
 543         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 544
 545         R_StainNode(cl.worldmodel->brushq1.nodes + cl.worldmodel->brushq1.hulls[0].firstclipnode, cl.worldmodel, origin, radius, fcolor);
 546
 547         // look for embedded bmodels
 548         for (n = 0;n < cl_num_brushmodel_entities;n++)
 549         {
 550                 ent = cl_brushmodel_entities[n];
 551                 model = ent->model;
 552                 if (model && model->name[0] == '*')
 553                 {
 554                         Mod_CheckLoaded(model);
 555                         if (model->brushq1.nodes)
 556                         {
 557                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 558                                 R_StainNode(model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 559                         }
 560                 }
 561         }
 562 }
 563
 564
 565 /*
 566 =============================================================
 567
 568         BRUSH MODELS
 569
 570 =============================================================
 571 */
 572
 573 static void RSurf_AddLightmapToVertexColors_Color4f(const int *lightmapoffsets, float *c, int numverts, const qbyte *samples, int size3, const qbyte *styles)
 574 {
 575         int i;
 576         float scale;
 577         const qbyte *lm;
 578         if (styles[0] != 255)
 579         {
 580                 for (i = 0;i < numverts;i++, c += 4)
 581                 {
 582                         lm = samples + lightmapoffsets[i];
 583                         scale = d_lightstylevalue[styles[0]] * (1.0f / 32768.0f);
 584                         VectorMA(c, scale, lm, c);
 585                         if (styles[1] != 255)
 586                         {
 587                                 lm += size3;
 588                                 scale = d_lightstylevalue[styles[1]] * (1.0f / 32768.0f);
 589                                 VectorMA(c, scale, lm, c);
 590                                 if (styles[2] != 255)
 591                                 {
 592                                         lm += size3;
 593                                         scale = d_lightstylevalue[styles[2]] * (1.0f / 32768.0f);
 594                                         VectorMA(c, scale, lm, c);
 595                                         if (styles[3] != 255)
 596                                         {
 597                                                 lm += size3;
 598                                                 scale = d_lightstylevalue[styles[3]] * (1.0f / 32768.0f);
 599                                                 VectorMA(c, scale, lm, c);
 600                                         }
 601                                 }
 602                         }
 603                 }
 604         }
 605 }
 606
 607 static void RSurf_FogColors_Vertex3f_Color4f(const float *v, float *c, float colorscale, int numverts, const float *modelorg)
 608 {
 609         int i;
 610         float diff[3], f;
 611         if (fogenabled)
 612         {
 613                 for (i = 0;i < numverts;i++, v += 3, c += 4)
 614                 {
 615                         VectorSubtract(v, modelorg, diff);
 616                         f = colorscale * (1 - exp(fogdensity/DotProduct(diff, diff)));
 617                         VectorScale(c, f, c);
 618                 }
 619         }
 620         else if (colorscale != 1)
 621                 for (i = 0;i < numverts;i++, c += 4)
 622                         VectorScale(c, colorscale, c);
 623 }
 624
 625 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)
 626 {
 627         int i;
 628         float diff[3], f;
 629         r *= colorscale;
 630         g *= colorscale;
 631         b *= colorscale;
 632         if (fogenabled)
 633         {
 634                 for (i = 0;i < numverts;i++, v += 3, c += 4)
 635                 {
 636                         VectorSubtract(v, modelorg, diff);
 637                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
 638                         c[0] = r * f;
 639                         c[1] = g * f;
 640                         c[2] = b * f;
 641                         c[3] = a;
 642                 }
 643         }
 644         else
 645         {
 646                 for (i = 0;i < numverts;i++, c += 4)
 647                 {
 648                         c[0] = r;
 649                         c[1] = g;
 650                         c[2] = b;
 651                         c[3] = a;
 652                 }
 653         }
 654 }
 655
 656 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)
 657 {
 658         int i;
 659         float diff[3], f;
 660         r *= colorscale;
 661         g *= colorscale;
 662         b *= colorscale;
 663         for (i = 0;i < numverts;i++, v += 3, c += 4)
 664         {
 665                 VectorSubtract(v, modelorg, diff);
 666                 f = exp(fogdensity/DotProduct(diff, diff));
 667                 c[0] = r;
 668                 c[1] = g;
 669                 c[2] = b;
 670                 c[3] = a * f;
 671         }
 672 }
 673
 674 static int RSurf_LightSeparate_Vertex3f_Color4f(const matrix4x4_t *matrix, const int *dlightbits, int numverts, const float *vert, float *color, float scale)
 675 {
 676         float f;
 677         const float *v;
 678         float *c;
 679         int i, l, lit = false;
 680         const rdlight_t *rd;
 681         vec3_t lightorigin;
 682         for (l = 0;l < r_numdlights;l++)
 683         {
 684                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 685                 {
 686                         rd = &r_dlight[l];
 687                         Matrix4x4_Transform(matrix, rd->origin, lightorigin);
 688                         for (i = 0, v = vert, c = color;i < numverts;i++, v += 3, c += 4)
 689                         {
 690                                 f = VectorDistance2(v, lightorigin) + LIGHTOFFSET;
 691                                 if (f < rd->cullradius2)
 692                                 {
 693                                         f = ((1.0f / f) - rd->subtract) * scale;
 694                                         VectorMA(c, f, rd->light, c);
 695                                         lit = true;
 696                                 }
 697                         }
 698                 }
 699         }
 700         return lit;
 701 }
 702
 703 static void RSurfShader_Sky(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 704 {
 705         const msurface_t *surf;
 706         rmeshstate_t m;
 707
 708         // LordHavoc: HalfLife maps have freaky skypolys...
 709         if (ent->model->brush.ishlbsp)
 710                 return;
 711
 712         if (skyrendernow)
 713         {
 714                 skyrendernow = false;
 715                 if (skyrendermasked)
 716                         R_Sky();
 717         }
 718
 719         R_Mesh_Matrix(&ent->matrix);
 720
 721         GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
 722         if (skyrendermasked)
 723         {
 724                 // depth-only (masking)
 725                 qglColorMask(0,0,0,0);
 726                 // just to make sure that braindead drivers don't draw anything
 727                 // despite that colormask...
 728                 GL_BlendFunc(GL_ZERO, GL_ONE);
 729         }
 730         else
 731         {
 732                 // fog sky
 733                 GL_BlendFunc(GL_ONE, GL_ZERO);
 734         }
 735         GL_DepthMask(true);
 736         GL_DepthTest(true);
 737
 738         memset(&m, 0, sizeof(m));
 739         R_Mesh_State_Texture(&m);
 740
 741         while((surf = *surfchain++) != NULL)
 742         {
 743                 if (surf->visframe == r_framecount)
 744                 {
 745                         GL_VertexPointer(surf->mesh.data_vertex3f);
 746                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 747                 }
 748         }
 749         qglColorMask(1,1,1,1);
 750 }
 751
 752 static void RSurfShader_Water_Callback(const void *calldata1, int calldata2)
 753 {
 754         const entity_render_t *ent = calldata1;
 755         const msurface_t *surf = ent->model->brushq1.surfaces + calldata2;
 756         float colorscale;
 757         rmeshstate_t m;
 758         float alpha;
 759         float modelorg[3];
 760         texture_t *texture;
 761         matrix4x4_t tempmatrix;
 762         float   args[4] = {0.05f,0,0,0.04f};
 763
 764         if (r_waterscroll.value)
 765         {
 766                 // scrolling in texture matrix
 767                 Matrix4x4_CreateTranslate(&tempmatrix, sin(cl.time) * 0.025 * r_waterscroll.value, sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 768                 if (gl_textureshader && r_watershader.integer)
 769                 {
 770                         R_Mesh_TextureMatrix(1, &tempmatrix);
 771                         Matrix4x4_CreateTranslate(&tempmatrix, -sin(cl.time) * 0.025 * r_waterscroll.value, -sin(cl.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 772                 }
 773                 R_Mesh_TextureMatrix(0, &tempmatrix);
 774         }
 775
 776         R_Mesh_Matrix(&ent->matrix);
 777         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 778
 779         memset(&m, 0, sizeof(m));
 780         texture = surf->texinfo->texture->currentframe;
 781         alpha = texture->currentalpha;
 782         if (texture->rendertype == SURFRENDER_ADD)
 783         {
 784                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 785                 GL_DepthMask(false);
 786         }
 787         else if (texture->rendertype == SURFRENDER_ALPHA)
 788         {
 789                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 790                 GL_DepthMask(false);
 791         }
 792         else
 793         {
 794                 GL_BlendFunc(GL_ONE, GL_ZERO);
 795                 GL_DepthMask(true);
 796         }
 797         if (gl_textureshader && r_watershader.integer)
 798         {
 799                 m.tex[0] = R_GetTexture(mod_shared_distorttexture);
 800                 m.tex[1] = R_GetTexture(texture->skin.base);
 801         }
 802         else
 803                 m.tex[0] = R_GetTexture(texture->skin.base);
 804         colorscale = 1;
 805         if (gl_combine.integer)
 806         {
 807                 m.texrgbscale[0] = 4;
 808                 colorscale *= 0.25f;
 809         }
 810         GL_DepthTest(true);
 811         if (fogenabled)
 812                 GL_ColorPointer(varray_color4f);
 813         else
 814                 GL_Color(1, 1, 1, alpha);
 815         if (gl_textureshader && r_watershader.integer)
 816         {
 817                 GL_ActiveTexture (0);
 818                 qglTexEnvi (GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
 819                 GL_ActiveTexture (1);
 820                 qglTexEnvi (GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
 821                 qglTexEnvi (GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_OFFSET_TEXTURE_2D_NV);
 822                 qglTexEnvi (GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB);
 823                 qglTexEnvfv (GL_TEXTURE_SHADER_NV, GL_OFFSET_TEXTURE_MATRIX_NV, &args[0]);
 824                 qglEnable (GL_TEXTURE_SHADER_NV);
 825         }
 826
 827         GL_VertexPointer(surf->mesh.data_vertex3f);
 828         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 829         m.pointer_texcoord[1] = surf->mesh.data_texcoordtexture2f;
 830         m.texcombinergb[1] = GL_REPLACE;
 831         R_Mesh_State_Texture(&m);
 832         if (fogenabled)
 833         {
 834                 R_FillColors(varray_color4f, surf->mesh.num_vertices, 1, 1, 1, alpha);
 835                 RSurf_FogColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, colorscale, surf->mesh.num_vertices, modelorg);
 836         }
 837         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 838
 839         if (gl_textureshader && r_watershader.integer)
 840         {
 841                 qglDisable (GL_TEXTURE_SHADER_NV);
 842                 GL_ActiveTexture (0);
 843         }
 844
 845         if (fogenabled)
 846         {
 847                 memset(&m, 0, sizeof(m));
 848                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 849                 GL_DepthMask(false);
 850                 GL_DepthTest(true);
 851                 m.tex[0] = R_GetTexture(texture->skin.fog);
 852                 GL_VertexPointer(surf->mesh.data_vertex3f);
 853                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 854                 GL_ColorPointer(varray_color4f);
 855                 R_Mesh_State_Texture(&m);
 856                 RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], alpha, 1, surf->mesh.num_vertices, modelorg);
 857                 R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 858         }
 859
 860         if (r_waterscroll.value)
 861         {
 862                 Matrix4x4_CreateIdentity(&tempmatrix);
 863                 R_Mesh_TextureMatrix(0, &tempmatrix);
 864                 R_Mesh_TextureMatrix(1, &tempmatrix);
 865         }
 866 }
 867
 868 static void RSurfShader_Water(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 869 {
 870         const msurface_t *surf;
 871         msurface_t **chain;
 872         vec3_t center;
 873         if (texture->rendertype != SURFRENDER_OPAQUE)
 874         {
 875                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
 876                 {
 877                         if (surf->visframe == r_framecount)
 878                         {
 879                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
 880                                 R_MeshQueue_AddTransparent(center, RSurfShader_Water_Callback, ent, surf - ent->model->brushq1.surfaces);
 881                         }
 882                 }
 883         }
 884         else
 885                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
 886                         if (surf->visframe == r_framecount)
 887                                 RSurfShader_Water_Callback(ent, surf - ent->model->brushq1.surfaces);
 888 }
 889
 890 static void RSurfShader_Wall_Pass_BaseVertex(const entity_render_t *ent, const msurface_t *surf, const texture_t *texture, int rendertype, float currentalpha)
 891 {
 892         float base, colorscale;
 893         rmeshstate_t m;
 894         float modelorg[3];
 895         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 896         memset(&m, 0, sizeof(m));
 897         if (rendertype == SURFRENDER_ADD)
 898         {
 899                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 900                 GL_DepthMask(false);
 901         }
 902         else if (rendertype == SURFRENDER_ALPHA)
 903         {
 904                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 905                 GL_DepthMask(false);
 906         }
 907         else
 908         {
 909                 GL_BlendFunc(GL_ONE, GL_ZERO);
 910                 GL_DepthMask(true);
 911         }
 912         m.tex[0] = R_GetTexture(texture->skin.base);
 913         colorscale = 1;
 914         if (gl_combine.integer)
 915         {
 916                 m.texrgbscale[0] = 4;
 917                 colorscale *= 0.25f;
 918         }
 919         base = ent->effects & EF_FULLBRIGHT ? 2.0f : r_ambient.value * (1.0f / 64.0f);
 920         GL_DepthTest(true);
 921         GL_ColorPointer(varray_color4f);
 922
 923         GL_VertexPointer(surf->mesh.data_vertex3f);
 924         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 925         R_Mesh_State_Texture(&m);
 926         R_FillColors(varray_color4f, surf->mesh.num_vertices, base, base, base, currentalpha);
 927         if (!(ent->effects & EF_FULLBRIGHT))
 928         {
 929                 if (surf->dlightframe == r_framecount)
 930                         RSurf_LightSeparate_Vertex3f_Color4f(&ent->inversematrix, surf->dlightbits, surf->mesh.num_vertices, surf->mesh.data_vertex3f, varray_color4f, 1);
 931                 if (surf->flags & SURF_LIGHTMAP)
 932                         RSurf_AddLightmapToVertexColors_Color4f(surf->mesh.data_lightmapoffsets, varray_color4f,surf->mesh.num_vertices, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
 933         }
 934         RSurf_FogColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, colorscale, surf->mesh.num_vertices, modelorg);
 935         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 936 }
 937
 938 static void RSurfShader_Wall_Pass_Glow(const entity_render_t *ent, const msurface_t *surf, const texture_t *texture, int rendertype, float currentalpha)
 939 {
 940         rmeshstate_t m;
 941         float modelorg[3];
 942         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 943         memset(&m, 0, sizeof(m));
 944         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 945         GL_DepthMask(false);
 946         GL_DepthTest(true);
 947         m.tex[0] = R_GetTexture(texture->skin.glow);
 948         GL_ColorPointer(varray_color4f);
 949
 950         GL_VertexPointer(surf->mesh.data_vertex3f);
 951         if (m.tex[0])
 952                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 953         R_Mesh_State_Texture(&m);
 954         RSurf_FoggedColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, 1, 1, 1, currentalpha, 1, surf->mesh.num_vertices, modelorg);
 955         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 956 }
 957
 958 static void RSurfShader_Wall_Pass_Fog(const entity_render_t *ent, const msurface_t *surf, const texture_t *texture, int rendertype, float currentalpha)
 959 {
 960         rmeshstate_t m;
 961         float modelorg[3];
 962         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 963         memset(&m, 0, sizeof(m));
 964         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 965         GL_DepthMask(false);
 966         GL_DepthTest(true);
 967         m.tex[0] = R_GetTexture(texture->skin.fog);
 968         GL_ColorPointer(varray_color4f);
 969
 970         GL_VertexPointer(surf->mesh.data_vertex3f);
 971         if (m.tex[0])
 972                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
 973         R_Mesh_State_Texture(&m);
 974         RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], currentalpha, 1, surf->mesh.num_vertices, modelorg);
 975         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
 976 }
 977
 978 static void RSurfShader_OpaqueWall_Pass_BaseTripleTexCombine(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
 979 {
 980         const msurface_t *surf;
 981         rmeshstate_t m;
 982         int lightmaptexturenum;
 983         float cl;
 984         memset(&m, 0, sizeof(m));
 985         GL_BlendFunc(GL_ONE, GL_ZERO);
 986         GL_DepthMask(true);
 987         GL_DepthTest(true);
 988         m.tex[0] = R_GetTexture(texture->skin.base);
 989         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
 990         m.tex[2] = R_GetTexture(texture->skin.detail);
 991         m.texrgbscale[0] = 1;
 992         m.texrgbscale[1] = 4;
 993         m.texrgbscale[2] = 2;
 994         cl = (float) (1 << r_lightmapscalebit);
 995         GL_Color(cl, cl, cl, 1);
 996
 997         while((surf = *surfchain++) != NULL)
 998         {
 999                 if (surf->visframe == r_framecount)
1000                 {
1001                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1002                         //if (m.tex[1] != lightmaptexturenum)
1003                         //{
1004                                 m.tex[1] = lightmaptexturenum;
1005                         //      R_Mesh_State_Texture(&m);
1006                         //}
1007                         GL_VertexPointer(surf->mesh.data_vertex3f);
1008                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1009                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
1010                         m.pointer_texcoord[2] = surf->mesh.data_texcoorddetail2f;
1011                         R_Mesh_State_Texture(&m);
1012                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1013                 }
1014         }
1015 }
1016
1017 static void RSurfShader_OpaqueWall_Pass_BaseDoubleTex(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1018 {
1019         const msurface_t *surf;
1020         rmeshstate_t m;
1021         int lightmaptexturenum;
1022         memset(&m, 0, sizeof(m));
1023         GL_BlendFunc(GL_ONE, GL_ZERO);
1024         GL_DepthMask(true);
1025         GL_DepthTest(true);
1026         m.tex[0] = R_GetTexture(texture->skin.base);
1027         m.tex[1] = R_GetTexture((**surfchain).lightmaptexture);
1028         if (gl_combine.integer)
1029                 m.texrgbscale[1] = 4;
1030         GL_Color(1, 1, 1, 1);
1031         while((surf = *surfchain++) != NULL)
1032         {
1033                 if (surf->visframe == r_framecount)
1034                 {
1035                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1036                         //if (m.tex[1] != lightmaptexturenum)
1037                         //{
1038                                 m.tex[1] = lightmaptexturenum;
1039                         //      R_Mesh_State_Texture(&m);
1040                         //}
1041                         GL_VertexPointer(surf->mesh.data_vertex3f);
1042                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1043                         m.pointer_texcoord[1] = surf->mesh.data_texcoordlightmap2f;
1044                         R_Mesh_State_Texture(&m);
1045                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1046                 }
1047         }
1048 }
1049
1050 static void RSurfShader_OpaqueWall_Pass_BaseTexture(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1051 {
1052         const msurface_t *surf;
1053         rmeshstate_t m;
1054         memset(&m, 0, sizeof(m));
1055         GL_DepthMask(true);
1056         GL_DepthTest(true);
1057         GL_BlendFunc(GL_ONE, GL_ZERO);
1058         m.tex[0] = R_GetTexture(texture->skin.base);
1059         GL_Color(1, 1, 1, 1);
1060         while((surf = *surfchain++) != NULL)
1061         {
1062                 if (surf->visframe == r_framecount)
1063                 {
1064                         GL_VertexPointer(surf->mesh.data_vertex3f);
1065                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1066                         R_Mesh_State_Texture(&m);
1067                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1068                 }
1069         }
1070 }
1071
1072 static void RSurfShader_OpaqueWall_Pass_BaseLightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1073 {
1074         const msurface_t *surf;
1075         rmeshstate_t m;
1076         int lightmaptexturenum;
1077         memset(&m, 0, sizeof(m));
1078         GL_BlendFunc(GL_ZERO, GL_SRC_COLOR);
1079         GL_DepthMask(false);
1080         GL_DepthTest(true);
1081         m.tex[0] = R_GetTexture((**surfchain).lightmaptexture);
1082         if (gl_combine.integer)
1083                 m.texrgbscale[0] = 4;
1084         GL_Color(1, 1, 1, 1);
1085         while((surf = *surfchain++) != NULL)
1086         {
1087                 if (surf->visframe == r_framecount)
1088                 {
1089                         lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1090                         //if (m.tex[0] != lightmaptexturenum)
1091                         //{
1092                                 m.tex[0] = lightmaptexturenum;
1093                         //      R_Mesh_State_Texture(&m);
1094                         //}
1095                         GL_VertexPointer(surf->mesh.data_vertex3f);
1096                         m.pointer_texcoord[0] = surf->mesh.data_texcoordlightmap2f;
1097                         R_Mesh_State_Texture(&m);
1098                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1099                 }
1100         }
1101 }
1102
1103 static void RSurfShader_OpaqueWall_Pass_Fog(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1104 {
1105         const msurface_t *surf;
1106         rmeshstate_t m;
1107         float modelorg[3];
1108         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1109         memset(&m, 0, sizeof(m));
1110         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1111         GL_DepthMask(false);
1112         GL_DepthTest(true);
1113         GL_ColorPointer(varray_color4f);
1114         while((surf = *surfchain++) != NULL)
1115         {
1116                 if (surf->visframe == r_framecount)
1117                 {
1118                         GL_VertexPointer(surf->mesh.data_vertex3f);
1119                         if (m.tex[0])
1120                                 m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1121                         R_Mesh_State_Texture(&m);
1122                         RSurf_FogPassColors_Vertex3f_Color4f(surf->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], 1, 1, surf->mesh.num_vertices, modelorg);
1123                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1124                 }
1125         }
1126 }
1127
1128 static void RSurfShader_OpaqueWall_Pass_BaseDetail(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1129 {
1130         const msurface_t *surf;
1131         rmeshstate_t m;
1132         memset(&m, 0, sizeof(m));
1133         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
1134         GL_DepthMask(false);
1135         GL_DepthTest(true);
1136         m.tex[0] = R_GetTexture(texture->skin.detail);
1137         GL_Color(1, 1, 1, 1);
1138         while((surf = *surfchain++) != NULL)
1139         {
1140                 if (surf->visframe == r_framecount)
1141                 {
1142                         GL_VertexPointer(surf->mesh.data_vertex3f);
1143                         m.pointer_texcoord[0] = surf->mesh.data_texcoorddetail2f;
1144                         R_Mesh_State_Texture(&m);
1145                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1146                 }
1147         }
1148 }
1149
1150 static void RSurfShader_OpaqueWall_Pass_Glow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1151 {
1152         const msurface_t *surf;
1153         rmeshstate_t m;
1154         memset(&m, 0, sizeof(m));
1155         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1156         GL_DepthMask(false);
1157         GL_DepthTest(true);
1158         m.tex[0] = R_GetTexture(texture->skin.glow);
1159         GL_Color(1, 1, 1, 1);
1160         while((surf = *surfchain++) != NULL)
1161         {
1162                 if (surf->visframe == r_framecount)
1163                 {
1164                         GL_VertexPointer(surf->mesh.data_vertex3f);
1165                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1166                         R_Mesh_State_Texture(&m);
1167                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1168                 }
1169         }
1170 }
1171
1172 static void RSurfShader_OpaqueWall_Pass_OpaqueGlow(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1173 {
1174         const msurface_t *surf;
1175         rmeshstate_t m;
1176         memset(&m, 0, sizeof(m));
1177         GL_BlendFunc(GL_SRC_ALPHA, GL_ZERO);
1178         GL_DepthMask(true);
1179         m.tex[0] = R_GetTexture(texture->skin.glow);
1180         if (m.tex[0])
1181                 GL_Color(1, 1, 1, 1);
1182         else
1183                 GL_Color(0, 0, 0, 1);
1184         while((surf = *surfchain++) != NULL)
1185         {
1186                 if (surf->visframe == r_framecount)
1187                 {
1188                         GL_VertexPointer(surf->mesh.data_vertex3f);
1189                         m.pointer_texcoord[0] = surf->mesh.data_texcoordtexture2f;
1190                         R_Mesh_State_Texture(&m);
1191                         R_Mesh_Draw(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i);
1192                 }
1193         }
1194 }
1195
1196 static void RSurfShader_Wall_Vertex_Callback(const void *calldata1, int calldata2)
1197 {
1198         const entity_render_t *ent = calldata1;
1199         const msurface_t *surf = ent->model->brushq1.surfaces + calldata2;
1200         int rendertype;
1201         float currentalpha;
1202         texture_t *texture;
1203         R_Mesh_Matrix(&ent->matrix);
1204
1205         texture = surf->texinfo->texture;
1206         if (texture->animated)
1207                 texture = texture->anim_frames[ent->frame != 0][(texture->anim_total[ent->frame != 0] >= 2) ? ((int) (cl.time * 5.0f) % texture->anim_total[ent->frame != 0]) : 0];
1208
1209         currentalpha = ent->alpha;
1210         if (ent->effects & EF_ADDITIVE)
1211                 rendertype = SURFRENDER_ADD;
1212         else if (currentalpha < 1 || texture->skin.fog != NULL)
1213                 rendertype = SURFRENDER_ALPHA;
1214         else
1215                 rendertype = SURFRENDER_OPAQUE;
1216
1217         RSurfShader_Wall_Pass_BaseVertex(ent, surf, texture, rendertype, currentalpha);
1218         if (texture->skin.glow)
1219                 RSurfShader_Wall_Pass_Glow(ent, surf, texture, rendertype, currentalpha);
1220         if (fogenabled)
1221                 RSurfShader_Wall_Pass_Fog(ent, surf, texture, rendertype, currentalpha);
1222 }
1223
1224 static void RSurfShader_Wall_Lightmap(const entity_render_t *ent, const texture_t *texture, msurface_t **surfchain)
1225 {
1226         const msurface_t *surf;
1227         msurface_t **chain;
1228         vec3_t center;
1229         if (texture->rendertype != SURFRENDER_OPAQUE)
1230         {
1231                 // transparent vertex shaded from lightmap
1232                 for (chain = surfchain;(surf = *chain) != NULL;chain++)
1233                 {
1234                         if (surf->visframe == r_framecount)
1235                         {
1236                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1237                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->brushq1.surfaces);
1238                         }
1239                 }
1240         }
1241         else if (r_shadow_realtime_world.integer)
1242         {
1243                 // opaque base lighting
1244                 RSurfShader_OpaqueWall_Pass_OpaqueGlow(ent, texture, surfchain);
1245                 if (fogenabled)
1246                         RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1247         }
1248         else
1249         {
1250                 // opaque lightmapped
1251                 if (r_textureunits.integer >= 3 && gl_combine.integer && r_detailtextures.integer)
1252                         RSurfShader_OpaqueWall_Pass_BaseTripleTexCombine(ent, texture, surfchain);
1253                 else if (r_textureunits.integer >= 2)
1254                 {
1255                         RSurfShader_OpaqueWall_Pass_BaseDoubleTex(ent, texture, surfchain);
1256                         if (r_detailtextures.integer)
1257                                 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1258                 }
1259                 else
1260                 {
1261                         RSurfShader_OpaqueWall_Pass_BaseTexture(ent, texture, surfchain);
1262                         RSurfShader_OpaqueWall_Pass_BaseLightmap(ent, texture, surfchain);
1263                         if (r_detailtextures.integer)
1264                                 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, surfchain);
1265                 }
1266                 if (texture->skin.glow)
1267                         RSurfShader_OpaqueWall_Pass_Glow(ent, texture, surfchain);
1268                 if (fogenabled)
1269                         RSurfShader_OpaqueWall_Pass_Fog(ent, texture, surfchain);
1270         }
1271 }
1272
1273 Cshader_t Cshader_wall_lightmap = {{NULL, RSurfShader_Wall_Lightmap}, SHADERFLAGS_NEEDLIGHTMAP};
1274 Cshader_t Cshader_water = {{NULL, RSurfShader_Water}, 0};
1275 Cshader_t Cshader_sky = {{RSurfShader_Sky, NULL}, 0};
1276
1277 int Cshader_count = 3;
1278 Cshader_t *Cshaders[3] =
1279 {
1280         &Cshader_wall_lightmap,
1281         &Cshader_water,
1282         &Cshader_sky
1283 };
1284
1285 void R_UpdateTextureInfo(entity_render_t *ent)
1286 {
1287         int i, texframe, alttextures;
1288         texture_t *t;
1289
1290         if (!ent->model)
1291                 return;
1292
1293         alttextures = ent->frame != 0;
1294         texframe = (int)(cl.time * 5.0f);
1295         for (i = 0;i < ent->model->brushq1.numtextures;i++)
1296         {
1297                 t = ent->model->brushq1.textures + i;
1298                 t->currentalpha = ent->alpha;
1299                 if (t->flags & SURF_WATERALPHA)
1300                         t->currentalpha *= r_wateralpha.value;
1301                 if (ent->effects & EF_ADDITIVE)
1302                         t->rendertype = SURFRENDER_ADD;
1303                 else if (t->currentalpha < 1 || t->skin.fog != NULL)
1304                         t->rendertype = SURFRENDER_ALPHA;
1305                 else
1306                         t->rendertype = SURFRENDER_OPAQUE;
1307                 // we don't need to set currentframe if t->animated is false because
1308                 // it was already set up by the texture loader for non-animating
1309                 if (t->animated)
1310                         t->currentframe = t->anim_frames[alttextures][(t->anim_total[alttextures] >= 2) ? (texframe % t->anim_total[alttextures]) : 0];
1311         }
1312 }
1313
1314 void R_PrepareSurfaces(entity_render_t *ent)
1315 {
1316         int i, numsurfaces, *surfacevisframes;
1317         model_t *model;
1318         msurface_t *surf, *surfaces, **surfchain;
1319         vec3_t modelorg;
1320
1321         if (!ent->model)
1322                 return;
1323
1324         model = ent->model;
1325         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1326         numsurfaces = model->brushq1.nummodelsurfaces;
1327         surfaces = model->brushq1.surfaces + model->brushq1.firstmodelsurface;
1328         surfacevisframes = model->brushq1.surfacevisframes + model->brushq1.firstmodelsurface;
1329
1330         R_UpdateTextureInfo(ent);
1331
1332         if (r_dynamic.integer && !r_shadow_realtime_dlight.integer)
1333                 R_MarkLights(ent);
1334
1335         if (model->brushq1.light_ambient != r_ambient.value || model->brushq1.light_scalebit != r_lightmapscalebit)
1336         {
1337                 model->brushq1.light_ambient = r_ambient.value;
1338                 model->brushq1.light_scalebit = r_lightmapscalebit;
1339                 for (i = 0;i < model->brushq1.nummodelsurfaces;i++)
1340                         model->brushq1.surfaces[i + model->brushq1.firstmodelsurface].cached_dlight = true;
1341         }
1342         else
1343         {
1344                 for (i = 0;i < model->brushq1.light_styles;i++)
1345                 {
1346                         if (model->brushq1.light_stylevalue[i] != d_lightstylevalue[model->brushq1.light_style[i]])
1347                         {
1348                                 model->brushq1.light_stylevalue[i] = d_lightstylevalue[model->brushq1.light_style[i]];
1349                                 for (surfchain = model->brushq1.light_styleupdatechains[i];*surfchain;surfchain++)
1350                                         (**surfchain).cached_dlight = true;
1351                         }
1352                 }
1353         }
1354
1355         for (i = 0, surf = surfaces;i < numsurfaces;i++, surf++)
1356         {
1357                 if (surfacevisframes[i] == r_framecount)
1358                 {
1359 #if !WORLDNODECULLBACKFACES
1360                         // mark any backface surfaces as not visible
1361                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1362                         {
1363                                 if (!(surf->flags & SURF_PLANEBACK))
1364                                         surfacevisframes[i] = -1;
1365                         }
1366                         else
1367                         {
1368                                 if ((surf->flags & SURF_PLANEBACK))
1369                                         surfacevisframes[i] = -1;
1370                         }
1371                         if (surfacevisframes[i] == r_framecount)
1372 #endif
1373                         {
1374                                 c_faces++;
1375                                 surf->visframe = r_framecount;
1376                                 if (surf->cached_dlight && surf->lightmaptexture != NULL)
1377                                         R_BuildLightMap(ent, surf);
1378                         }
1379                 }
1380         }
1381 }
1382
1383 void R_DrawSurfaces(entity_render_t *ent, int type, msurface_t ***chains)
1384 {
1385         int i;
1386         texture_t *t;
1387         if (ent->model == NULL)
1388                 return;
1389         R_Mesh_Matrix(&ent->matrix);
1390         for (i = 0, t = ent->model->brushq1.textures;i < ent->model->brushq1.numtextures;i++, t++)
1391                 if (t->shader->shaderfunc[type] && t->currentframe && chains[i] != NULL)
1392                         t->shader->shaderfunc[type](ent, t->currentframe, chains[i]);
1393 }
1394
1395 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
1396 {
1397         int i;
1398         float *v;
1399         rmeshstate_t m;
1400         const entity_render_t *ent = calldata1;
1401         const mportal_t *portal = ent->model->brushq1.portals + calldata2;
1402         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1403         GL_DepthMask(false);
1404         GL_DepthTest(true);
1405         R_Mesh_Matrix(&ent->matrix);
1406         GL_VertexPointer(varray_vertex3f);
1407
1408         memset(&m, 0, sizeof(m));
1409         R_Mesh_State_Texture(&m);
1410
1411         i = portal - ent->model->brushq1.portals;
1412         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
1413                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
1414                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
1415                          0.125f);
1416         if (PlaneDiff(r_origin, (&portal->plane)) < 0)
1417         {
1418                 for (i = portal->numpoints - 1, v = varray_vertex3f;i >= 0;i--, v += 3)
1419                         VectorCopy(portal->points[i].position, v);
1420         }
1421         else
1422                 for (i = 0, v = varray_vertex3f;i < portal->numpoints;i++, v += 3)
1423                         VectorCopy(portal->points[i].position, v);
1424         R_Mesh_Draw(portal->numpoints, portal->numpoints - 2, polygonelements);
1425 }
1426
1427 // LordHavoc: this is just a nice debugging tool, very slow
1428 static void R_DrawPortals(entity_render_t *ent)
1429 {
1430         int i;
1431         mportal_t *portal, *endportal;
1432         float temp[3], center[3], f;
1433         if (ent->model == NULL)
1434                 return;
1435         for (portal = ent->model->brushq1.portals, endportal = portal + ent->model->brushq1.numportals;portal < endportal;portal++)
1436         {
1437                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
1438                 {
1439                         VectorClear(temp);
1440                         for (i = 0;i < portal->numpoints;i++)
1441                                 VectorAdd(temp, portal->points[i].position, temp);
1442                         f = ixtable[portal->numpoints];
1443                         VectorScale(temp, f, temp);
1444                         Matrix4x4_Transform(&ent->matrix, temp, center);
1445                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, ent, portal - ent->model->brushq1.portals);
1446                 }
1447         }
1448 }
1449
1450 void R_PrepareBrushModel(entity_render_t *ent)
1451 {
1452         int i, numsurfaces, *surfacevisframes, *surfacepvsframes;
1453         msurface_t *surf;
1454         model_t *model;
1455 #if WORLDNODECULLBACKFACES
1456         vec3_t modelorg;
1457 #endif
1458
1459         // because bmodels can be reused, we have to decide which things to render
1460         // from scratch every time
1461         model = ent->model;
1462         if (model == NULL)
1463                 return;
1464 #if WORLDNODECULLBACKFACES
1465         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1466 #endif
1467         numsurfaces = model->brushq1.nummodelsurfaces;
1468         surf = model->brushq1.surfaces + model->brushq1.firstmodelsurface;
1469         surfacevisframes = model->brushq1.surfacevisframes + model->brushq1.firstmodelsurface;
1470         surfacepvsframes = model->brushq1.surfacepvsframes + model->brushq1.firstmodelsurface;
1471         for (i = 0;i < numsurfaces;i++, surf++)
1472         {
1473 #if WORLDNODECULLBACKFACES
1474                 // mark any backface surfaces as not visible
1475                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1476                 {
1477                         if ((surf->flags & SURF_PLANEBACK))
1478                                 surfacevisframes[i] = r_framecount;
1479                 }
1480                 else if (!(surf->flags & SURF_PLANEBACK))
1481                         surfacevisframes[i] = r_framecount;
1482 #else
1483                 surfacevisframes[i] = r_framecount;
1484 #endif
1485                 surf->dlightframe = -1;
1486         }
1487         R_PrepareSurfaces(ent);
1488 }
1489
1490 void R_SurfaceWorldNode (entity_render_t *ent)
1491 {
1492         int i, *surfacevisframes, *surfacepvsframes, surfnum;
1493         msurface_t *surf;
1494         mleaf_t *leaf;
1495         model_t *model;
1496         vec3_t modelorg;
1497
1498         // equivilant to quake's RecursiveWorldNode but faster and more effective
1499         model = ent->model;
1500         if (model == NULL)
1501                 return;
1502         surfacevisframes = model->brushq1.surfacevisframes + model->brushq1.firstmodelsurface;
1503         surfacepvsframes = model->brushq1.surfacepvsframes + model->brushq1.firstmodelsurface;
1504         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1505
1506         for (leaf = model->brushq1.pvsleafchain;leaf;leaf = leaf->pvschain)
1507         {
1508                 if (!R_CullBox (leaf->mins, leaf->maxs))
1509                 {
1510                         c_leafs++;
1511                         leaf->visframe = r_framecount;
1512                 }
1513         }
1514
1515         for (i = 0;i < model->brushq1.pvssurflistlength;i++)
1516         {
1517                 surfnum = model->brushq1.pvssurflist[i];
1518                 surf = model->brushq1.surfaces + surfnum;
1519 #if WORLDNODECULLBACKFACES
1520                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1521                 {
1522                         if ((surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1523                                 surfacevisframes[surfnum] = r_framecount;
1524                 }
1525                 else
1526                 {
1527                         if (!(surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1528                                 surfacevisframes[surfnum] = r_framecount;
1529                 }
1530 #else
1531                 if (!R_CullBox (surf->poly_mins, surf->poly_maxs))
1532                         surfacevisframes[surfnum] = r_framecount;
1533 #endif
1534         }
1535 }
1536
1537 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1538 {
1539         int c, leafstackpos, *mark, *surfacevisframes, bitnum;
1540 #if WORLDNODECULLBACKFACES
1541         int n;
1542         msurface_t *surf;
1543 #endif
1544         mleaf_t *leaf, *leafstack[8192];
1545         mportal_t *p;
1546         vec3_t modelorg;
1547         msurface_t *surfaces;
1548         if (ent->model == NULL)
1549                 return;
1550         // LordHavoc: portal-passage worldnode with PVS;
1551         // follows portals leading outward from viewleaf, does not venture
1552         // offscreen or into leafs that are not visible, faster than Quake's
1553         // RecursiveWorldNode
1554         surfaces = ent->model->brushq1.surfaces;
1555         surfacevisframes = ent->model->brushq1.surfacevisframes;
1556         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1557         viewleaf->worldnodeframe = r_framecount;
1558         leafstack[0] = viewleaf;
1559         leafstackpos = 1;
1560         while (leafstackpos)
1561         {
1562                 c_leafs++;
1563                 leaf = leafstack[--leafstackpos];
1564                 leaf->visframe = r_framecount;
1565                 // draw any surfaces bounding this leaf
1566                 if (leaf->nummarksurfaces)
1567                 {
1568                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1569                         {
1570 #if WORLDNODECULLBACKFACES
1571                                 n = *mark++;
1572                                 if (surfacevisframes[n] != r_framecount)
1573                                 {
1574                                         surf = surfaces + n;
1575                                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1576                                         {
1577                                                 if ((surf->flags & SURF_PLANEBACK))
1578                                                         surfacevisframes[n] = r_framecount;
1579                                         }
1580                                         else
1581                                         {
1582                                                 if (!(surf->flags & SURF_PLANEBACK))
1583                                                         surfacevisframes[n] = r_framecount;
1584                                         }
1585                                 }
1586 #else
1587                                 surfacevisframes[*mark++] = r_framecount;
1588 #endif
1589                         }
1590                 }
1591                 // follow portals into other leafs
1592                 for (p = leaf->portals;p;p = p->next)
1593                 {
1594                         // LordHavoc: this DotProduct hurts less than a cache miss
1595                         // (which is more likely to happen if backflowing through leafs)
1596                         if (DotProduct(modelorg, p->plane.normal) < (p->plane.dist + 1))
1597                         {
1598                                 leaf = p->past;
1599                                 if (leaf->worldnodeframe != r_framecount)
1600                                 {
1601                                         leaf->worldnodeframe = r_framecount;
1602                                         // FIXME: R_CullBox is absolute, should be done relative
1603                                         bitnum = (leaf - ent->model->brushq1.leafs) - 1;
1604                                         if ((r_pvsbits[bitnum >> 3] & (1 << (bitnum & 7))) && !R_CullBox(leaf->mins, leaf->maxs))
1605                                                 leafstack[leafstackpos++] = leaf;
1606                                 }
1607                         }
1608                 }
1609         }
1610 }
1611
1612 void R_PVSUpdate (entity_render_t *ent, mleaf_t *viewleaf)
1613 {
1614         int j, c, *surfacepvsframes, *mark;
1615         mleaf_t *leaf;
1616         model_t *model;
1617
1618         model = ent->model;
1619         if (model && (model->brushq1.pvsviewleaf != viewleaf || model->brushq1.pvsviewleafnovis != r_novis.integer))
1620         {
1621                 model->brushq1.pvsframecount++;
1622                 model->brushq1.pvsviewleaf = viewleaf;
1623                 model->brushq1.pvsviewleafnovis = r_novis.integer;
1624                 model->brushq1.pvsleafchain = NULL;
1625                 model->brushq1.pvssurflistlength = 0;
1626                 if (viewleaf)
1627                 {
1628                         surfacepvsframes = model->brushq1.surfacepvsframes;
1629                         for (j = 0;j < model->brushq1.visleafs;j++)
1630                         {
1631                                 if (r_pvsbits[j >> 3] & (1 << (j & 7)))
1632                                 {
1633                                         leaf = model->brushq1.leafs + j + 1;
1634                                         leaf->pvsframe = model->brushq1.pvsframecount;
1635                                         leaf->pvschain = model->brushq1.pvsleafchain;
1636                                         model->brushq1.pvsleafchain = leaf;
1637                                         // mark surfaces bounding this leaf as visible
1638                                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--, mark++)
1639                                                 surfacepvsframes[*mark] = model->brushq1.pvsframecount;
1640                                 }
1641                         }
1642                         model->brushq1.BuildPVSTextureChains(model);
1643                 }
1644         }
1645 }
1646
1647 void R_WorldVisibility(entity_render_t *ent)
1648 {
1649         vec3_t modelorg;
1650         mleaf_t *viewleaf;
1651
1652         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1653         viewleaf = (ent->model && ent->model->brushq1.PointInLeaf) ? ent->model->brushq1.PointInLeaf(ent->model, modelorg) : NULL;
1654         R_PVSUpdate(ent, viewleaf);
1655
1656         if (!viewleaf)
1657                 return;
1658
1659         if (r_surfaceworldnode.integer || viewleaf->contents == CONTENTS_SOLID)
1660                 R_SurfaceWorldNode (ent);
1661         else
1662                 R_PortalWorldNode (ent, viewleaf);
1663 }
1664
1665 void R_DrawWorld(entity_render_t *ent)
1666 {
1667         if (ent->model == NULL)
1668                 return;
1669         if (!ent->model->brushq1.numleafs && ent->model->Draw)
1670                 ent->model->Draw(ent);
1671         else
1672         {
1673                 R_PrepareSurfaces(ent);
1674                 R_DrawSurfaces(ent, SHADERSTAGE_SKY, ent->model->brushq1.pvstexturechains);
1675                 R_DrawSurfaces(ent, SHADERSTAGE_NORMAL, ent->model->brushq1.pvstexturechains);
1676                 if (r_drawportals.integer)
1677                         R_DrawPortals(ent);
1678         }
1679 }
1680
1681 void R_Model_Brush_DrawSky(entity_render_t *ent)
1682 {
1683         if (ent->model == NULL)
1684                 return;
1685         if (ent != &cl_entities[0].render)
1686                 R_PrepareBrushModel(ent);
1687         R_DrawSurfaces(ent, SHADERSTAGE_SKY, ent->model->brushq1.pvstexturechains);
1688 }
1689
1690 void R_Model_Brush_Draw(entity_render_t *ent)
1691 {
1692         if (ent->model == NULL)
1693                 return;
1694         c_bmodels++;
1695         if (ent != &cl_entities[0].render)
1696                 R_PrepareBrushModel(ent);
1697         R_DrawSurfaces(ent, SHADERSTAGE_NORMAL, ent->model->brushq1.pvstexturechains);
1698 }
1699
1700 void R_Model_Brush_DrawShadowVolume (entity_render_t *ent, vec3_t relativelightorigin, float lightradius)
1701 {
1702         int i;
1703         msurface_t *surf;
1704         float projectdistance, f, temp[3], lightradius2;
1705         if (ent->model == NULL)
1706                 return;
1707         R_Mesh_Matrix(&ent->matrix);
1708         lightradius2 = lightradius * lightradius;
1709         R_UpdateTextureInfo(ent);
1710         projectdistance = 1000000000.0f;//lightradius + ent->model->radius;
1711         for (i = 0, surf = ent->model->brushq1.surfaces + ent->model->brushq1.firstmodelsurface;i < ent->model->brushq1.nummodelsurfaces;i++, surf++)
1712         {
1713                 if (surf->texinfo->texture->rendertype == SURFRENDER_OPAQUE && surf->flags & SURF_SHADOWCAST)
1714                 {
1715                         f = PlaneDiff(relativelightorigin, surf->plane);
1716                         if (surf->flags & SURF_PLANEBACK)
1717                                 f = -f;
1718                         // draw shadows only for frontfaces and only if they are close
1719                         if (f >= 0.1 && f < lightradius)
1720                         {
1721                                 temp[0] = bound(surf->poly_mins[0], relativelightorigin[0], surf->poly_maxs[0]) - relativelightorigin[0];
1722                                 temp[1] = bound(surf->poly_mins[1], relativelightorigin[1], surf->poly_maxs[1]) - relativelightorigin[1];
1723                                 temp[2] = bound(surf->poly_mins[2], relativelightorigin[2], surf->poly_maxs[2]) - relativelightorigin[2];
1724                                 if (DotProduct(temp, temp) < lightradius2)
1725                                         R_Shadow_Volume(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_vertex3f, surf->mesh.data_element3i, surf->mesh.data_neighbor3i, relativelightorigin, lightradius, projectdistance);
1726                         }
1727                 }
1728         }
1729 }
1730
1731 void R_Model_Brush_DrawLightForSurfaceList(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, msurface_t **surflist, int numsurfaces, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz)
1732 {
1733         int surfnum;
1734         msurface_t *surf;
1735         texture_t *t;
1736         if (ent->model == NULL)
1737                 return;
1738         R_Mesh_Matrix(&ent->matrix);
1739         R_UpdateTextureInfo(ent);
1740         for (surfnum = 0;surfnum < numsurfaces;surfnum++)
1741         {
1742                 surf = surflist[surfnum];
1743                 if (surf->visframe == r_framecount)
1744                 {
1745                         t = surf->texinfo->texture->currentframe;
1746                         if (t->rendertype == SURFRENDER_OPAQUE && t->flags & SURF_SHADOWLIGHT)
1747                         {
1748                                 R_Shadow_DiffuseLighting(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i, surf->mesh.data_vertex3f, surf->mesh.data_svector3f, surf->mesh.data_tvector3f, surf->mesh.data_normal3f, surf->mesh.data_texcoordtexture2f, relativelightorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.base, t->skin.nmap, NULL);
1749                                 R_Shadow_SpecularLighting(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i, surf->mesh.data_vertex3f, surf->mesh.data_svector3f, surf->mesh.data_tvector3f, surf->mesh.data_normal3f, surf->mesh.data_texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.gloss, t->skin.nmap, NULL);
1750                         }
1751                 }
1752         }
1753 }
1754
1755 void R_Model_Brush_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz)
1756 {
1757         int surfnum;
1758         msurface_t *surf;
1759         texture_t *t;
1760         float f, lightmins[3], lightmaxs[3];
1761         if (ent->model == NULL)
1762                 return;
1763         R_Mesh_Matrix(&ent->matrix);
1764         lightmins[0] = relativelightorigin[0] - lightradius;
1765         lightmins[1] = relativelightorigin[1] - lightradius;
1766         lightmins[2] = relativelightorigin[2] - lightradius;
1767         lightmaxs[0] = relativelightorigin[0] + lightradius;
1768         lightmaxs[1] = relativelightorigin[1] + lightradius;
1769         lightmaxs[2] = relativelightorigin[2] + lightradius;
1770         R_UpdateTextureInfo(ent);
1771         for (surfnum = 0, surf = ent->model->brushq1.surfaces + ent->model->brushq1.firstmodelsurface;surfnum < ent->model->brushq1.nummodelsurfaces;surfnum++, surf++)
1772         {
1773                 if ((ent != &cl_entities[0].render || surf->visframe == r_framecount) && BoxesOverlap(surf->poly_mins, surf->poly_maxs, lightmins, lightmaxs))
1774                 {
1775                         f = PlaneDiff(relativelightorigin, surf->plane);
1776                         if (surf->flags & SURF_PLANEBACK)
1777                                 f = -f;
1778                         if (f >= -0.1 && f < lightradius)
1779                         {
1780                                 t = surf->texinfo->texture->currentframe;
1781                                 if (t->rendertype == SURFRENDER_OPAQUE && t->flags & SURF_SHADOWLIGHT)
1782                                 {
1783                                         R_Shadow_DiffuseLighting(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i, surf->mesh.data_vertex3f, surf->mesh.data_svector3f, surf->mesh.data_tvector3f, surf->mesh.data_normal3f, surf->mesh.data_texcoordtexture2f, relativelightorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.base, t->skin.nmap, NULL);
1784                                         R_Shadow_SpecularLighting(surf->mesh.num_vertices, surf->mesh.num_triangles, surf->mesh.data_element3i, surf->mesh.data_vertex3f, surf->mesh.data_svector3f, surf->mesh.data_tvector3f, surf->mesh.data_normal3f, surf->mesh.data_texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.gloss, t->skin.nmap, NULL);
1785                                 }
1786                         }
1787                 }
1788         }
1789 }
1790
1791 void R_DrawCollisionBrush(colbrushf_t *brush)
1792 {
1793         int i;
1794         i = ((int)brush) / sizeof(colbrushf_t);
1795         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
1796         GL_VertexPointer(brush->points->v);
1797         R_Mesh_Draw(brush->numpoints, brush->numtriangles, brush->elements);
1798 }
1799
1800 void R_Q3BSP_DrawFace(entity_render_t *ent, q3mface_t *face)
1801 {
1802         rmeshstate_t m;
1803         if (!face->num_triangles)
1804                 return;
1805         if (face->texture->renderflags)
1806         {
1807                 if (face->texture->renderflags & Q3MTEXTURERENDERFLAGS_SKY)
1808                 {
1809                         if (skyrendernow)
1810                         {
1811                                 skyrendernow = false;
1812                                 if (skyrendermasked)
1813                                         R_Sky();
1814                         }
1815
1816                         R_Mesh_Matrix(&ent->matrix);
1817
1818                         GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
1819                         if (skyrendermasked)
1820                         {
1821                                 // depth-only (masking)
1822                                 qglColorMask(0,0,0,0);
1823                                 // just to make sure that braindead drivers don't draw anything
1824                                 // despite that colormask...
1825                                 GL_BlendFunc(GL_ZERO, GL_ONE);
1826                         }
1827                         else
1828                         {
1829                                 // fog sky
1830                                 GL_BlendFunc(GL_ONE, GL_ZERO);
1831                         }
1832                         GL_DepthMask(true);
1833                         GL_DepthTest(true);
1834
1835                         memset(&m, 0, sizeof(m));
1836                         R_Mesh_State_Texture(&m);
1837
1838                         GL_VertexPointer(face->data_vertex3f);
1839                         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
1840                         qglColorMask(1,1,1,1);
1841                         return;
1842                 }
1843                 if (face->texture->renderflags & Q3MTEXTURERENDERFLAGS_NODRAW)
1844                         return;
1845         }
1846         R_Mesh_Matrix(&ent->matrix);
1847         face->visframe = r_framecount;
1848         memset(&m, 0, sizeof(m));
1849         GL_BlendFunc(GL_ONE, GL_ZERO);
1850         GL_DepthMask(true);
1851         GL_DepthTest(true);
1852         m.tex[0] = R_GetTexture(face->texture->skin.base);
1853         m.pointer_texcoord[0] = face->data_texcoordtexture2f;
1854         if (face->lightmaptexture)
1855         {
1856                 m.tex[1] = R_GetTexture(face->lightmaptexture);
1857                 m.pointer_texcoord[1] = face->data_texcoordlightmap2f;
1858                 m.texrgbscale[1] = 2;
1859                 GL_Color(1, 1, 1, 1);
1860         }
1861         else
1862         {
1863                 m.texrgbscale[0] = 2;
1864                 GL_ColorPointer(face->data_color4f);
1865         }
1866         R_Mesh_State_Texture(&m);
1867         GL_VertexPointer(face->data_vertex3f);
1868         R_Mesh_Draw(face->num_vertices, face->num_triangles, face->data_element3i);
1869 }
1870
1871 /*
1872 void R_Q3BSP_DrawSky(entity_render_t *ent)
1873 {
1874 }
1875 */
1876
1877 void R_Q3BSP_RecursiveWorldNode(entity_render_t *ent, q3mnode_t *node, const vec3_t modelorg, qbyte *pvs, int markframe)
1878 {
1879         int i;
1880         q3mleaf_t *leaf;
1881         q3mface_t *face;
1882         while (node->isnode)
1883         {
1884                 if (R_CullBox(node->mins, node->maxs))
1885                         return;
1886                 R_Q3BSP_RecursiveWorldNode(ent, node->children[0], modelorg, pvs, markframe);
1887                 node = node->children[1];
1888         }
1889         if (R_CullBox(node->mins, node->maxs))
1890                 return;
1891         leaf = (q3mleaf_t *)node;
1892         if (pvs[leaf->clusterindex >> 3] & (1 << (leaf->clusterindex & 7)))
1893         {
1894                 for (i = 0;i < leaf->numleaffaces;i++)
1895                 {
1896                         face = leaf->firstleafface[i];
1897                         if (face->markframe != markframe)
1898                         {
1899                                 face->markframe = markframe;
1900                                 if (!R_CullBox(face->mins, face->maxs))
1901                                         R_Q3BSP_DrawFace(ent, face);
1902                         }
1903                 }
1904         }
1905 }
1906
1907
1908
1909 void R_Q3BSP_Draw(entity_render_t *ent)
1910 {
1911         int i;
1912         q3mface_t *face;
1913         vec3_t modelorg;
1914         model_t *model;
1915         qbyte *pvs;
1916         static int markframe = 0;
1917         R_Mesh_Matrix(&ent->matrix);
1918         model = ent->model;
1919         if (r_drawcollisionbrushes.integer < 2)
1920         {
1921                 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1922                 if (ent == &cl_entities[0].render && model->brushq3.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
1923                         R_Q3BSP_RecursiveWorldNode(ent, model->brushq3.data_nodes, modelorg, pvs, ++markframe);
1924                 else
1925                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
1926                                 R_Q3BSP_DrawFace(ent, face);
1927         }
1928         if (r_drawcollisionbrushes.integer >= 1)
1929         {
1930                 rmeshstate_t m;
1931                 memset(&m, 0, sizeof(m));
1932                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1933                 GL_DepthMask(false);
1934                 GL_DepthTest(true);
1935                 R_Mesh_State_Texture(&m);
1936                 for (i = 0;i < model->brushq3.data_thismodel->numbrushes;i++)
1937                         if (model->brushq3.data_thismodel->firstbrush[i].colbrushf && model->brushq3.data_thismodel->firstbrush[i].colbrushf->numtriangles)
1938                                 R_DrawCollisionBrush(model->brushq3.data_thismodel->firstbrush[i].colbrushf);
1939         }
1940 }
1941
1942 void R_Q3BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius)
1943 {
1944         int i;
1945         q3mface_t *face;
1946         vec3_t modelorg, lightmins, lightmaxs;
1947         model_t *model;
1948         float projectdistance;
1949         projectdistance = 1000000000.0f;//lightradius + ent->model->radius;
1950         if (r_drawcollisionbrushes.integer < 2)
1951         {
1952                 model = ent->model;
1953                 R_Mesh_Matrix(&ent->matrix);
1954                 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1955                 lightmins[0] = relativelightorigin[0] - lightradius;
1956                 lightmins[1] = relativelightorigin[1] - lightradius;
1957                 lightmins[2] = relativelightorigin[2] - lightradius;
1958                 lightmaxs[0] = relativelightorigin[0] + lightradius;
1959                 lightmaxs[1] = relativelightorigin[1] + lightradius;
1960                 lightmaxs[2] = relativelightorigin[2] + lightradius;
1961                 //if (ent == &cl_entities[0].render && model->brushq3.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
1962                 //      R_Q3BSP_RecursiveWorldNode(ent, model->brushq3.data_nodes, modelorg, pvs, ++markframe);
1963                 //else
1964                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
1965                                 if (BoxesOverlap(lightmins, lightmaxs, face->mins, face->maxs))
1966                                         R_Shadow_Volume(face->num_vertices, face->num_triangles, face->data_vertex3f, face->data_element3i, face->data_neighbor3i, relativelightorigin, lightradius, projectdistance);
1967         }
1968 }
1969
1970 void R_Q3BSP_DrawFaceLight(entity_render_t *ent, q3mface_t *face, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz)
1971 {
1972         if ((face->texture->renderflags & Q3MTEXTURERENDERFLAGS_NODRAW) || !face->num_triangles)
1973                 return;
1974         R_Shadow_DiffuseLighting(face->num_vertices, face->num_triangles, face->data_element3i, face->data_vertex3f, face->data_svector3f, face->data_tvector3f, face->data_normal3f, face->data_texcoordtexture2f, relativelightorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, face->texture->skin.base, face->texture->skin.nmap, NULL);
1975         R_Shadow_SpecularLighting(face->num_vertices, face->num_triangles, face->data_element3i, face->data_vertex3f, face->data_svector3f, face->data_tvector3f, face->data_normal3f, face->data_texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, face->texture->skin.gloss, face->texture->skin.nmap, NULL);
1976 }
1977
1978 void R_Q3BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz)
1979 {
1980         int i;
1981         q3mface_t *face;
1982         vec3_t modelorg, lightmins, lightmaxs;
1983         model_t *model;
1984         //qbyte *pvs;
1985         //static int markframe = 0;
1986         if (r_drawcollisionbrushes.integer < 2)
1987         {
1988                 model = ent->model;
1989                 R_Mesh_Matrix(&ent->matrix);
1990                 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1991                 lightmins[0] = relativelightorigin[0] - lightradius;
1992                 lightmins[1] = relativelightorigin[1] - lightradius;
1993                 lightmins[2] = relativelightorigin[2] - lightradius;
1994                 lightmaxs[0] = relativelightorigin[0] + lightradius;
1995                 lightmaxs[1] = relativelightorigin[1] + lightradius;
1996                 lightmaxs[2] = relativelightorigin[2] + lightradius;
1997                 //if (ent == &cl_entities[0].render && model->brushq3.num_pvsclusters && !r_novis.integer && (pvs = model->brush.GetPVS(model, modelorg)))
1998                 //      R_Q3BSP_RecursiveWorldNode(ent, model->brushq3.data_nodes, modelorg, pvs, ++markframe);
1999                 //else
2000                         for (i = 0, face = model->brushq3.data_thismodel->firstface;i < model->brushq3.data_thismodel->numfaces;i++, face++)
2001                                 if ((ent != &cl_entities[0].render || face->visframe == r_framecount) && BoxesOverlap(lightmins, lightmaxs, face->mins, face->maxs))
2002                                         R_Q3BSP_DrawFaceLight(ent, face, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz);
2003         }
2004 }
2005
2006 static void gl_surf_start(void)
2007 {
2008 }
2009
2010 static void gl_surf_shutdown(void)
2011 {
2012 }
2013
2014 static void gl_surf_newmap(void)
2015 {
2016 }
2017
2018 void GL_Surf_Init(void)
2019 {
2020         int i;
2021         dlightdivtable[0] = 4194304;
2022         for (i = 1;i < 32768;i++)
2023                 dlightdivtable[i] = 4194304 / (i << 7);
2024
2025         Cvar_RegisterVariable(&r_ambient);
2026         Cvar_RegisterVariable(&r_drawportals);
2027         Cvar_RegisterVariable(&r_testvis);
2028         Cvar_RegisterVariable(&r_floatbuildlightmap);
2029         Cvar_RegisterVariable(&r_detailtextures);
2030         Cvar_RegisterVariable(&r_surfaceworldnode);
2031         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonoffset);
2032
2033         R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
2034 }
2035