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
  24 #define MAX_LIGHTMAP_SIZE 256
  25
  26 static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  27 static float floatblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  28
  29 static qbyte templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  30
  31 cvar_t r_ambient = {0, "r_ambient", "0"};
  32 cvar_t r_vertexsurfaces = {0, "r_vertexsurfaces", "0"};
  33 cvar_t r_dlightmap = {CVAR_SAVE, "r_dlightmap", "1"};
  34 //cvar_t r_drawportals = {0, "r_drawportals", "0"};
  35 cvar_t r_testvis = {0, "r_testvis", "0"};
  36 cvar_t r_floatbuildlightmap = {0, "r_floatbuildlightmap", "0"};
  37 cvar_t r_detailtextures = {CVAR_SAVE, "r_detailtextures", "1"};
  38 cvar_t r_surfaceworldnode = {0, "r_surfaceworldnode", "0"};
  39 cvar_t r_cullsurface = {0, "r_cullsurface", "0"};
  40
  41 static int dlightdivtable[32768];
  42
  43 // variables used by R_PVSUpdate
  44 int r_pvsframecount = 0;
  45 mleaf_t *r_pvsviewleaf = NULL;
  46 int r_pvsviewleafnovis = 0;
  47 msurface_t *r_pvsfirstsurface = NULL;
  48
  49 static int R_IntAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
  50 {
  51         int sdtable[256], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract;
  52         unsigned int *bl;
  53         float dist, impact[3], local[3];
  54
  55         // LordHavoc: use 64bit integer...  shame it's not very standardized...
  56 #if _MSC_VER || __BORLANDC__
  57         __int64     k;
  58 #else
  59         long long   k;
  60 #endif
  61
  62         lit = false;
  63
  64         smax = (surf->extents[0] >> 4) + 1;
  65         tmax = (surf->extents[1] >> 4) + 1;
  66         smax3 = smax * 3;
  67
  68         for (lnum = 0; lnum < r_numdlights; lnum++)
  69         {
  70                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
  71                         continue;                                       // not lit by this light
  72
  73                 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
  74                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
  75
  76                 // for comparisons to minimum acceptable light
  77                 // compensate for LIGHTOFFSET
  78                 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
  79
  80                 dist2 = dist * dist;
  81                 dist2 += LIGHTOFFSET;
  82                 if (dist2 >= maxdist)
  83                         continue;
  84
  85                 if (surf->plane->type < 3)
  86                 {
  87                         VectorCopy(local, impact);
  88                         impact[surf->plane->type] -= dist;
  89                 }
  90                 else
  91                 {
  92                         impact[0] = local[0] - surf->plane->normal[0] * dist;
  93                         impact[1] = local[1] - surf->plane->normal[1] * dist;
  94                         impact[2] = local[2] - surf->plane->normal[2] * dist;
  95                 }
  96
  97                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
  98                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
  99
 100                 s = bound(0, impacts, smax * 16) - impacts;
 101                 t = bound(0, impactt, tmax * 16) - impactt;
 102                 i = s * s + t * t + dist2;
 103                 if (i > maxdist)
 104                         continue;
 105
 106                 // reduce calculations
 107                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
 108                         sdtable[s] = i * i + dist2;
 109
 110                 maxdist3 = maxdist - dist2;
 111
 112                 // convert to 8.8 blocklights format
 113                 red = r_dlight[lnum].light[0];
 114                 green = r_dlight[lnum].light[1];
 115                 blue = r_dlight[lnum].light[2];
 116                 subtract = (int) (r_dlight[lnum].subtract * 4194304.0f);
 117                 bl = intblocklights;
 118
 119                 i = impactt;
 120                 for (t = 0;t < tmax;t++, i -= 16)
 121                 {
 122                         td = i * i;
 123                         // make sure some part of it is visible on this line
 124                         if (td < maxdist3)
 125                         {
 126                                 maxdist2 = maxdist - td;
 127                                 for (s = 0;s < smax;s++)
 128                                 {
 129                                         if (sdtable[s] < maxdist2)
 130                                         {
 131                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
 132                                                 if (k > 0)
 133                                                 {
 134                                                         bl[0] += (red   * k) >> 7;
 135                                                         bl[1] += (green * k) >> 7;
 136                                                         bl[2] += (blue  * k) >> 7;
 137                                                         lit = true;
 138                                                 }
 139                                         }
 140                                         bl += 3;
 141                                 }
 142                         }
 143                         else // skip line
 144                                 bl += smax3;
 145                 }
 146         }
 147         return lit;
 148 }
 149
 150 static int R_FloatAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
 151 {
 152         int lnum, s, t, smax, tmax, smax3, lit, impacts, impactt;
 153         float sdtable[256], *bl, k, dist, dist2, maxdist, maxdist2, maxdist3, td1, td, red, green, blue, impact[3], local[3], subtract;
 154
 155         lit = false;
 156
 157         smax = (surf->extents[0] >> 4) + 1;
 158         tmax = (surf->extents[1] >> 4) + 1;
 159         smax3 = smax * 3;
 160
 161         for (lnum = 0; lnum < r_numdlights; lnum++)
 162         {
 163                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
 164                         continue;                                       // not lit by this light
 165
 166                 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
 167                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
 168
 169                 // for comparisons to minimum acceptable light
 170                 // compensate for LIGHTOFFSET
 171                 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
 172
 173                 dist2 = dist * dist;
 174                 dist2 += LIGHTOFFSET;
 175                 if (dist2 >= maxdist)
 176                         continue;
 177
 178                 if (surf->plane->type < 3)
 179                 {
 180                         VectorCopy(local, impact);
 181                         impact[surf->plane->type] -= dist;
 182                 }
 183                 else
 184                 {
 185                         impact[0] = local[0] - surf->plane->normal[0] * dist;
 186                         impact[1] = local[1] - surf->plane->normal[1] * dist;
 187                         impact[2] = local[2] - surf->plane->normal[2] * dist;
 188                 }
 189
 190                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 191                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 192
 193                 td = bound(0, impacts, smax * 16) - impacts;
 194                 td1 = bound(0, impactt, tmax * 16) - impactt;
 195                 td = td * td + td1 * td1 + dist2;
 196                 if (td > maxdist)
 197                         continue;
 198
 199                 // reduce calculations
 200                 for (s = 0, td1 = impacts; s < smax; s++, td1 -= 16.0f)
 201                         sdtable[s] = td1 * td1 + dist2;
 202
 203                 maxdist3 = maxdist - dist2;
 204
 205                 // convert to 8.8 blocklights format
 206                 red = r_dlight[lnum].light[0];
 207                 green = r_dlight[lnum].light[1];
 208                 blue = r_dlight[lnum].light[2];
 209                 subtract = r_dlight[lnum].subtract * 32768.0f;
 210                 bl = floatblocklights;
 211
 212                 td1 = impactt;
 213                 for (t = 0;t < tmax;t++, td1 -= 16.0f)
 214                 {
 215                         td = td1 * td1;
 216                         // make sure some part of it is visible on this line
 217                         if (td < maxdist3)
 218                         {
 219                                 maxdist2 = maxdist - td;
 220                                 for (s = 0;s < smax;s++)
 221                                 {
 222                                         if (sdtable[s] < maxdist2)
 223                                         {
 224                                                 k = (32768.0f / (sdtable[s] + td)) - subtract;
 225                                                 bl[0] += red   * k;
 226                                                 bl[1] += green * k;
 227                                                 bl[2] += blue  * k;
 228                                                 lit = true;
 229                                         }
 230                                         bl += 3;
 231                                 }
 232                         }
 233                         else // skip line
 234                                 bl += smax3;
 235                 }
 236         }
 237         return lit;
 238 }
 239
 240 /*
 241 ===============
 242 R_BuildLightMap
 243
 244 Combine and scale multiple lightmaps into the 8.8 format in blocklights
 245 ===============
 246 */
 247 static void R_BuildLightMap (const entity_render_t *ent, msurface_t *surf, int dlightchanged)
 248 {
 249         if (!r_floatbuildlightmap.integer)
 250         {
 251                 int smax, tmax, i, j, size, size3, shift, maps, stride, l;
 252                 unsigned int *bl, scale;
 253                 qbyte *lightmap, *out, *stain;
 254
 255                 // update cached lighting info
 256                 surf->cached_dlight = 0;
 257                 surf->cached_lightscalebit = lightscalebit;
 258                 surf->cached_ambient = r_ambient.value;
 259                 surf->cached_light[0] = d_lightstylevalue[surf->styles[0]];
 260                 surf->cached_light[1] = d_lightstylevalue[surf->styles[1]];
 261                 surf->cached_light[2] = d_lightstylevalue[surf->styles[2]];
 262                 surf->cached_light[3] = d_lightstylevalue[surf->styles[3]];
 263
 264                 smax = (surf->extents[0]>>4)+1;
 265                 tmax = (surf->extents[1]>>4)+1;
 266                 size = smax*tmax;
 267                 size3 = size*3;
 268                 lightmap = surf->samples;
 269
 270         // set to full bright if no light data
 271                 bl = intblocklights;
 272                 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->lightdata)
 273                 {
 274                         for (i = 0;i < size3;i++)
 275                                 bl[i] = 255*256;
 276                 }
 277                 else
 278                 {
 279         // clear to no light
 280                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 281                         if (j)
 282                         {
 283                                 for (i = 0;i < size3;i++)
 284                                         *bl++ = j;
 285                         }
 286                         else
 287                                 memset(bl, 0, size*3*sizeof(unsigned int));
 288
 289                         if (surf->dlightframe == r_framecount && r_dlightmap.integer)
 290                         {
 291                                 surf->cached_dlight = R_IntAddDynamicLights(&ent->inversematrix, surf);
 292                                 if (surf->cached_dlight)
 293                                         c_light_polys++;
 294                                 else if (dlightchanged)
 295                                         return; // don't upload if only updating dlights and none mattered
 296                         }
 297
 298         // add all the lightmaps
 299                         if (lightmap)
 300                         {
 301                                 bl = intblocklights;
 302                                 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 303                                         for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 304                                                 bl[i] += lightmap[i] * scale;
 305                         }
 306                 }
 307
 308                 stain = surf->stainsamples;
 309                 bl = intblocklights;
 310                 out = templight;
 311                 // deal with lightmap brightness scale
 312                 shift = 7 + lightscalebit + 8;
 313                 if (ent->model->lightmaprgba)
 314                 {
 315                         stride = (surf->lightmaptexturestride - smax) * 4;
 316                         for (i = 0;i < tmax;i++, out += stride)
 317                         {
 318                                 for (j = 0;j < smax;j++)
 319                                 {
 320                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 321                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 322                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 323                                         *out++ = 255;
 324                                 }
 325                         }
 326                 }
 327                 else
 328                 {
 329                         stride = (surf->lightmaptexturestride - smax) * 3;
 330                         for (i = 0;i < tmax;i++, out += stride)
 331                         {
 332                                 for (j = 0;j < smax;j++)
 333                                 {
 334                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 335                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 336                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 337                                 }
 338                         }
 339                 }
 340
 341                 R_UpdateTexture(surf->lightmaptexture, templight);
 342         }
 343         else
 344         {
 345                 int smax, tmax, i, j, size, size3, maps, stride, l;
 346                 float *bl, scale;
 347                 qbyte *lightmap, *out, *stain;
 348
 349                 // update cached lighting info
 350                 surf->cached_dlight = 0;
 351                 surf->cached_lightscalebit = lightscalebit;
 352                 surf->cached_ambient = r_ambient.value;
 353                 surf->cached_light[0] = d_lightstylevalue[surf->styles[0]];
 354                 surf->cached_light[1] = d_lightstylevalue[surf->styles[1]];
 355                 surf->cached_light[2] = d_lightstylevalue[surf->styles[2]];
 356                 surf->cached_light[3] = d_lightstylevalue[surf->styles[3]];
 357
 358                 smax = (surf->extents[0]>>4)+1;
 359                 tmax = (surf->extents[1]>>4)+1;
 360                 size = smax*tmax;
 361                 size3 = size*3;
 362                 lightmap = surf->samples;
 363
 364         // set to full bright if no light data
 365                 bl = floatblocklights;
 366                 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->lightdata)
 367                         j = 255*256;
 368                 else
 369                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 370
 371                 // clear to no light
 372                 if (j)
 373                 {
 374                         for (i = 0;i < size3;i++)
 375                                 *bl++ = j;
 376                 }
 377                 else
 378                         memset(bl, 0, size*3*sizeof(float));
 379
 380                 if (surf->dlightframe == r_framecount && r_dlightmap.integer)
 381                 {
 382                         surf->cached_dlight = R_FloatAddDynamicLights(&ent->inversematrix, surf);
 383                         if (surf->cached_dlight)
 384                                 c_light_polys++;
 385                         else if (dlightchanged)
 386                                 return; // don't upload if only updating dlights and none mattered
 387                 }
 388
 389                 // add all the lightmaps
 390                 if (lightmap)
 391                 {
 392                         bl = floatblocklights;
 393                         for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 394                                 for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 395                                         bl[i] += lightmap[i] * scale;
 396                 }
 397
 398                 stain = surf->stainsamples;
 399                 bl = floatblocklights;
 400                 out = templight;
 401                 // deal with lightmap brightness scale
 402                 scale = 1.0f / (1 << (7 + lightscalebit + 8));
 403                 if (ent->model->lightmaprgba)
 404                 {
 405                         stride = (surf->lightmaptexturestride - smax) * 4;
 406                         for (i = 0;i < tmax;i++, out += stride)
 407                         {
 408                                 for (j = 0;j < smax;j++)
 409                                 {
 410                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 411                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 412                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 413                                         *out++ = 255;
 414                                 }
 415                         }
 416                 }
 417                 else
 418                 {
 419                         stride = (surf->lightmaptexturestride - smax) * 3;
 420                         for (i = 0;i < tmax;i++, out += stride)
 421                         {
 422                                 for (j = 0;j < smax;j++)
 423                                 {
 424                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 425                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 426                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 427                                 }
 428                         }
 429                 }
 430
 431                 R_UpdateTexture(surf->lightmaptexture, templight);
 432         }
 433 }
 434
 435 void R_StainNode (mnode_t *node, model_t *model, vec3_t origin, float radius, int icolor[8])
 436 {
 437         float ndist;
 438         msurface_t *surf, *endsurf;
 439         int sdtable[256], td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, dist2, impacts, impactt, subtract, a, stained, cr, cg, cb, ca, ratio;
 440         qbyte *bl;
 441         vec3_t impact;
 442         // LordHavoc: use 64bit integer...  shame it's not very standardized...
 443 #if _MSC_VER || __BORLANDC__
 444         __int64     k;
 445 #else
 446         long long   k;
 447 #endif
 448
 449
 450         // for comparisons to minimum acceptable light
 451         // compensate for 256 offset
 452         maxdist = radius * radius + 256.0f;
 453
 454         // clamp radius to avoid exceeding 32768 entry division table
 455         if (maxdist > 4194304)
 456                 maxdist = 4194304;
 457
 458         subtract = (int) ((1.0f / maxdist) * 4194304.0f);
 459
 460 loc0:
 461         if (node->contents < 0)
 462                 return;
 463         ndist = PlaneDiff(origin, node->plane);
 464         if (ndist > radius)
 465         {
 466                 node = node->children[0];
 467                 goto loc0;
 468         }
 469         if (ndist < -radius)
 470         {
 471                 node = node->children[1];
 472                 goto loc0;
 473         }
 474
 475         dist2 = ndist * ndist + 256.0f;
 476         if (dist2 < maxdist)
 477         {
 478                 maxdist3 = maxdist - dist2;
 479
 480                 if (node->plane->type < 3)
 481                 {
 482                         VectorCopy(origin, impact);
 483                         impact[node->plane->type] -= ndist;
 484                 }
 485                 else
 486                 {
 487                         impact[0] = origin[0] - node->plane->normal[0] * ndist;
 488                         impact[1] = origin[1] - node->plane->normal[1] * ndist;
 489                         impact[2] = origin[2] - node->plane->normal[2] * ndist;
 490                 }
 491
 492                 for (surf = model->surfaces + node->firstsurface, endsurf = surf + node->numsurfaces;surf < endsurf;surf++)
 493                 {
 494                         if (surf->stainsamples)
 495                         {
 496                                 smax = (surf->extents[0] >> 4) + 1;
 497                                 tmax = (surf->extents[1] >> 4) + 1;
 498
 499                                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 500                                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 501
 502                                 s = bound(0, impacts, smax * 16) - impacts;
 503                                 t = bound(0, impactt, tmax * 16) - impactt;
 504                                 i = s * s + t * t + dist2;
 505                                 if (i > maxdist)
 506                                         continue;
 507
 508                                 // reduce calculations
 509                                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
 510                                         sdtable[s] = i * i + dist2;
 511
 512                                 // convert to 8.8 blocklights format
 513                                 bl = surf->stainsamples;
 514                                 smax3 = smax * 3;
 515                                 stained = false;
 516
 517                                 i = impactt;
 518                                 for (t = 0;t < tmax;t++, i -= 16)
 519                                 {
 520                                         td = i * i;
 521                                         // make sure some part of it is visible on this line
 522                                         if (td < maxdist3)
 523                                         {
 524                                                 maxdist2 = maxdist - td;
 525                                                 for (s = 0;s < smax;s++)
 526                                                 {
 527                                                         if (sdtable[s] < maxdist2)
 528                                                         {
 529                                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
 530                                                                 if (k > 0)
 531                                                                 {
 532                                                                         ratio = rand() & 255;
 533                                                                         ca = (((icolor[7] - icolor[3]) * ratio) >> 8) + icolor[3];
 534                                                                         a = (ca * k) >> 8;
 535                                                                         if (a > 0)
 536                                                                         {
 537                                                                                 a = bound(0, a, 256);
 538                                                                                 cr = (((icolor[4] - icolor[0]) * ratio) >> 8) + icolor[0];
 539                                                                                 cg = (((icolor[5] - icolor[1]) * ratio) >> 8) + icolor[1];
 540                                                                                 cb = (((icolor[6] - icolor[2]) * ratio) >> 8) + icolor[2];
 541                                                                                 bl[0] = (qbyte) ((((cr - (int) bl[0]) * a) >> 8) + (int) bl[0]);
 542                                                                                 bl[1] = (qbyte) ((((cg - (int) bl[1]) * a) >> 8) + (int) bl[1]);
 543                                                                                 bl[2] = (qbyte) ((((cb - (int) bl[2]) * a) >> 8) + (int) bl[2]);
 544                                                                                 stained = true;
 545                                                                         }
 546                                                                 }
 547                                                         }
 548                                                         bl += 3;
 549                                                 }
 550                                         }
 551                                         else // skip line
 552                                                 bl += smax3;
 553                                 }
 554                                 // force lightmap upload
 555                                 if (stained)
 556                                         surf->cached_dlight = true;
 557                         }
 558                 }
 559         }
 560
 561         if (node->children[0]->contents >= 0)
 562         {
 563                 if (node->children[1]->contents >= 0)
 564                 {
 565                         R_StainNode(node->children[0], model, origin, radius, icolor);
 566                         node = node->children[1];
 567                         goto loc0;
 568                 }
 569                 else
 570                 {
 571                         node = node->children[0];
 572                         goto loc0;
 573                 }
 574         }
 575         else if (node->children[1]->contents >= 0)
 576         {
 577                 node = node->children[1];
 578                 goto loc0;
 579         }
 580 }
 581
 582 void R_Stain (vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2)
 583 {
 584         int n, icolor[8];
 585         entity_render_t *ent;
 586         model_t *model;
 587         vec3_t org;
 588         icolor[0] = cr1;
 589         icolor[1] = cg1;
 590         icolor[2] = cb1;
 591         icolor[3] = ca1;
 592         icolor[4] = cr2;
 593         icolor[5] = cg2;
 594         icolor[6] = cb2;
 595         icolor[7] = ca2;
 596
 597         model = cl.worldmodel;
 598         if (model)
 599                 R_StainNode(model->nodes + model->hulls[0].firstclipnode, model, origin, radius, icolor);
 600
 601         // look for embedded bmodels
 602         for (n = 0;n < cl_num_brushmodel_entities;n++)
 603         {
 604                 ent = cl_brushmodel_entities[n];
 605                 model = ent->model;
 606                 if (model && model->name[0] == '*')
 607                 {
 608                         Mod_CheckLoaded(model);
 609                         if (model->type == mod_brush)
 610                         {
 611                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 612                                 R_StainNode(model->nodes + model->hulls[0].firstclipnode, model, org, radius, icolor);
 613                         }
 614                 }
 615         }
 616 }
 617
 618
 619 /*
 620 =============================================================
 621
 622         BRUSH MODELS
 623
 624 =============================================================
 625 */
 626
 627 static void RSurf_AddLightmapToVertexColors(const int *lightmapoffsets, float *c, int numverts, const qbyte *samples, int size3, const qbyte *styles)
 628 {
 629         int i;
 630         float scale;
 631         const qbyte *lm;
 632         if (styles[0] != 255)
 633         {
 634                 for (i = 0;i < numverts;i++, c += 4)
 635                 {
 636                         lm = samples + lightmapoffsets[i];
 637                         scale = d_lightstylevalue[styles[0]] * (1.0f / 32768.0f);
 638                         VectorMA(c, scale, lm, c);
 639                         if (styles[1] != 255)
 640                         {
 641                                 lm += size3;
 642                                 scale = d_lightstylevalue[styles[1]] * (1.0f / 32768.0f);
 643                                 VectorMA(c, scale, lm, c);
 644                                 if (styles[2] != 255)
 645                                 {
 646                                         lm += size3;
 647                                         scale = d_lightstylevalue[styles[2]] * (1.0f / 32768.0f);
 648                                         VectorMA(c, scale, lm, c);
 649                                         if (styles[3] != 255)
 650                                         {
 651                                                 lm += size3;
 652                                                 scale = d_lightstylevalue[styles[3]] * (1.0f / 32768.0f);
 653                                                 VectorMA(c, scale, lm, c);
 654                                         }
 655                                 }
 656                         }
 657                 }
 658         }
 659 }
 660
 661 static void RSurf_FogColors(const float *v, float *c, float colorscale, int numverts, const float *modelorg)
 662 {
 663         int i;
 664         float diff[3], f;
 665         if (fogenabled)
 666         {
 667                 for (i = 0;i < numverts;i++, v += 4, c += 4)
 668                 {
 669                         VectorSubtract(v, modelorg, diff);
 670                         f = colorscale * (1 - exp(fogdensity/DotProduct(diff, diff)));
 671                         VectorScale(c, f, c);
 672                 }
 673         }
 674         else if (colorscale != 1)
 675                 for (i = 0;i < numverts;i++, c += 4)
 676                         VectorScale(c, colorscale, c);
 677 }
 678
 679 static void RSurf_FoggedColors(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
 680 {
 681         int i;
 682         float diff[3], f;
 683         r *= colorscale;
 684         g *= colorscale;
 685         b *= colorscale;
 686         if (fogenabled)
 687         {
 688                 for (i = 0;i < numverts;i++, v += 4, c += 4)
 689                 {
 690                         VectorSubtract(v, modelorg, diff);
 691                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
 692                         c[0] = r * f;
 693                         c[1] = g * f;
 694                         c[2] = b * f;
 695                         c[3] = a;
 696                 }
 697         }
 698         else
 699         {
 700                 for (i = 0;i < numverts;i++, c += 4)
 701                 {
 702                         c[0] = r;
 703                         c[1] = g;
 704                         c[2] = b;
 705                         c[3] = a;
 706                 }
 707         }
 708 }
 709
 710 static void RSurf_FogPassColors(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
 711 {
 712         int i;
 713         float diff[3], f;
 714         r *= colorscale;
 715         g *= colorscale;
 716         b *= colorscale;
 717         for (i = 0;i < numverts;i++, v += 4, c += 4)
 718         {
 719                 VectorSubtract(v, modelorg, diff);
 720                 f = exp(fogdensity/DotProduct(diff, diff));
 721                 c[0] = r;
 722                 c[1] = g;
 723                 c[2] = b;
 724                 c[3] = a * f;
 725         }
 726 }
 727
 728 static void RSurf_ScaleColors(float *c, float scale, int numverts)
 729 {
 730         int i;
 731         if (scale != 1)
 732                 for (i = 0;i < numverts;i++, c += 4)
 733                         VectorScale(c, scale, c);
 734 }
 735
 736 static int RSurf_LightSeparate(const matrix4x4_t *matrix, const int *dlightbits, int numverts, const float *vert, float *color)
 737 {
 738         float f;
 739         const float *v;
 740         float *c;
 741         int i, l, lit = false;
 742         const rdlight_t *rd;
 743         vec3_t lightorigin;
 744         for (l = 0;l < r_numdlights;l++)
 745         {
 746                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 747                 {
 748                         rd = &r_dlight[l];
 749                         Matrix4x4_Transform(matrix, rd->origin, lightorigin);
 750                         for (i = 0, v = vert, c = color;i < numverts;i++, v += 4, c += 4)
 751                         {
 752                                 f = VectorDistance2(v, lightorigin) + LIGHTOFFSET;
 753                                 if (f < rd->cullradius2)
 754                                 {
 755                                         f = (1.0f / f) - rd->subtract;
 756                                         VectorMA(c, f, rd->light, c);
 757                                         lit = true;
 758                                 }
 759                         }
 760                 }
 761         }
 762         return lit;
 763 }
 764
 765 // note: this untransforms lights to do the checking,
 766 // and takes surf->mesh->verts data
 767 static int RSurf_LightCheck(const matrix4x4_t *matrix, const int *dlightbits, const surfmesh_t *mesh)
 768 {
 769         int i, l;
 770         const rdlight_t *rd;
 771         vec3_t lightorigin;
 772         const float *v;
 773         for (l = 0;l < r_numdlights;l++)
 774         {
 775                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 776                 {
 777                         rd = &r_dlight[l];
 778                         Matrix4x4_Transform(matrix, rd->origin, lightorigin);
 779                         for (i = 0, v = mesh->verts;i < mesh->numverts;i++, v += 4)
 780                                 if (VectorDistance2(v, lightorigin) < rd->cullradius2)
 781                                         return true;
 782                 }
 783         }
 784         return false;
 785 }
 786
 787 static void RSurfShader_Sky(const entity_render_t *ent, const msurface_t *firstsurf)
 788 {
 789         const msurface_t *surf;
 790         const surfmesh_t *mesh;
 791         rmeshstate_t m;
 792
 793         // LordHavoc: HalfLife maps have freaky skypolys...
 794         if (ent->model->ishlbsp)
 795                 return;
 796
 797         if (skyrendernow)
 798         {
 799                 skyrendernow = false;
 800                 if (skyrendermasked)
 801                         R_Sky();
 802         }
 803
 804         R_Mesh_Matrix(&ent->matrix);
 805
 806         // draw depth-only polys
 807         memset(&m, 0, sizeof(m));
 808         if (skyrendermasked)
 809         {
 810                 m.blendfunc1 = GL_ZERO;
 811                 m.blendfunc2 = GL_ONE;
 812         }
 813         else
 814         {
 815                 // fog sky
 816                 m.blendfunc1 = GL_ONE;
 817                 m.blendfunc2 = GL_ZERO;
 818         }
 819         m.wantoverbright = false;
 820         m.depthwrite = true;
 821         R_Mesh_State(&m);
 822         for (surf = firstsurf;surf;surf = surf->chain)
 823         {
 824                 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 825                 {
 826                         R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
 827                         memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
 828                         memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 829                         if (skyrendermasked)
 830                                 memset(varray_color, 0, mesh->numverts * sizeof(float[4]));
 831                         else
 832                                 R_FillColors(varray_color, mesh->numverts, fogcolor[0] * mesh_colorscale, fogcolor[1] * mesh_colorscale, fogcolor[2] * mesh_colorscale, 1);
 833                         R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
 834                 }
 835         }
 836 }
 837
 838 static void RSurfShader_Water_Callback(const void *calldata1, int calldata2)
 839 {
 840         const entity_render_t *ent = calldata1;
 841         const msurface_t *surf = ent->model->surfaces + calldata2;
 842         float f;
 843         const surfmesh_t *mesh;
 844         rmeshstate_t m;
 845         float alpha = ent->alpha * (surf->flags & SURF_DRAWNOALPHA ? 1 : r_wateralpha.value);
 846         float modelorg[3];
 847         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 848
 849         R_Mesh_Matrix(&ent->matrix);
 850
 851         memset(&m, 0, sizeof(m));
 852         if (ent->effects & EF_ADDITIVE)
 853         {
 854                 m.blendfunc1 = GL_SRC_ALPHA;
 855                 m.blendfunc2 = GL_ONE;
 856         }
 857         else if (surf->currenttexture->fogtexture != NULL || alpha < 1)
 858         {
 859                 m.blendfunc1 = GL_SRC_ALPHA;
 860                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 861         }
 862         else
 863         {
 864                 m.blendfunc1 = GL_ONE;
 865                 m.blendfunc2 = GL_ZERO;
 866         }
 867         m.wantoverbright = true;
 868         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
 869         R_Mesh_State(&m);
 870         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 871         {
 872                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
 873                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
 874                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 875                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
 876                 f = surf->flags & SURF_DRAWFULLBRIGHT ? 1.0f : ((surf->flags & SURF_LIGHTMAP) ? 0 : 0.5f);
 877                 R_FillColors(varray_color, mesh->numverts, f, f, f, alpha);
 878                 if (!(surf->flags & SURF_DRAWFULLBRIGHT || ent->effects & EF_FULLBRIGHT))
 879                 {
 880                         if (surf->dlightframe == r_framecount)
 881                                 RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, mesh->numverts, varray_vertex, varray_color);
 882                         if (surf->flags & SURF_LIGHTMAP)
 883                                 RSurf_AddLightmapToVertexColors(mesh->lightmapoffsets, varray_color, mesh->numverts, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
 884                 }
 885                 RSurf_FogColors(varray_vertex, varray_color, mesh_colorscale, mesh->numverts, modelorg);
 886                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
 887         }
 888
 889         if (fogenabled)
 890         {
 891                 memset(&m, 0, sizeof(m));
 892                 m.blendfunc1 = GL_SRC_ALPHA;
 893                 m.blendfunc2 = GL_ONE;
 894                 m.wantoverbright = false;
 895                 m.tex[0] = R_GetTexture(surf->currenttexture->fogtexture);
 896                 R_Mesh_State(&m);
 897                 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 898                 {
 899                         R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
 900                         memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
 901                         memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 902                         if (m.tex[0])
 903                                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
 904                         RSurf_FogPassColors(varray_vertex, varray_color, fogcolor[0], fogcolor[1], fogcolor[2], alpha, mesh_colorscale, mesh->numverts, modelorg);
 905                         R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
 906                 }
 907         }
 908 }
 909
 910 static void RSurfShader_Water(const entity_render_t *ent, const msurface_t *firstsurf)
 911 {
 912         const msurface_t *surf;
 913         vec3_t center;
 914         for (surf = firstsurf;surf;surf = surf->chain)
 915         {
 916                 if ((r_wateralpha.value < 1 && !(surf->flags & SURF_DRAWNOALPHA)) || ent->effects & EF_ADDITIVE || surf->currenttexture->fogtexture)
 917                 {
 918                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
 919                         R_MeshQueue_AddTransparent(center, RSurfShader_Water_Callback, ent, surf - ent->model->surfaces);
 920                 }
 921                 else
 922                         RSurfShader_Water_Callback(ent, surf - ent->model->surfaces);
 923         }
 924 }
 925
 926 static void RSurfShader_Wall_Pass_BaseVertex(const entity_render_t *ent, const msurface_t *surf)
 927 {
 928         float base;
 929         const surfmesh_t *mesh;
 930         rmeshstate_t m;
 931         float modelorg[3];
 932         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 933         memset(&m, 0, sizeof(m));
 934         if (ent->effects & EF_ADDITIVE)
 935         {
 936                 m.blendfunc1 = GL_SRC_ALPHA;
 937                 m.blendfunc2 = GL_ONE;
 938         }
 939         else if (surf->currenttexture->fogtexture != NULL || ent->alpha < 1)
 940         {
 941                 m.blendfunc1 = GL_SRC_ALPHA;
 942                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 943         }
 944         else
 945         {
 946                 m.blendfunc1 = GL_ONE;
 947                 m.blendfunc2 = GL_ZERO;
 948         }
 949         m.wantoverbright = true;
 950         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
 951         base = ent->effects & EF_FULLBRIGHT ? 2.0f : r_ambient.value * (1.0f / 64.0f);
 952         R_Mesh_State(&m);
 953         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 954         {
 955                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
 956                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
 957                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 958                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
 959                 R_FillColors(varray_color, mesh->numverts, base, base, base, ent->alpha);
 960                 if (!(ent->effects & EF_FULLBRIGHT))
 961                 {
 962                         if (surf->dlightframe == r_framecount)
 963                                 RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, mesh->numverts, varray_vertex, varray_color);
 964                         if (surf->flags & SURF_LIGHTMAP)
 965                                 RSurf_AddLightmapToVertexColors(mesh->lightmapoffsets, varray_color, mesh->numverts, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
 966                 }
 967                 RSurf_FogColors(varray_vertex, varray_color, mesh_colorscale, mesh->numverts, modelorg);
 968                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
 969         }
 970 }
 971
 972 static void RSurfShader_Wall_Pass_BaseFullbright(const entity_render_t *ent, const msurface_t *surf)
 973 {
 974         const surfmesh_t *mesh;
 975         rmeshstate_t m;
 976         float modelorg[3];
 977         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
 978         memset(&m, 0, sizeof(m));
 979         if (ent->effects & EF_ADDITIVE)
 980         {
 981                 m.blendfunc1 = GL_SRC_ALPHA;
 982                 m.blendfunc2 = GL_ONE;
 983         }
 984         else if (surf->currenttexture->fogtexture != NULL || ent->alpha < 1)
 985         {
 986                 m.blendfunc1 = GL_SRC_ALPHA;
 987                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 988         }
 989         else
 990         {
 991                 m.blendfunc1 = GL_ONE;
 992                 m.blendfunc2 = GL_ZERO;
 993         }
 994         m.wantoverbright = false;
 995         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
 996         R_Mesh_State(&m);
 997         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 998         {
 999                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1000                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1001                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1002                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1003                 RSurf_FoggedColors(varray_vertex, varray_color, 1, 1, 1, ent->alpha, mesh_colorscale, mesh->numverts, modelorg);
1004                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1005         }
1006 }
1007
1008 static void RSurfShader_Wall_Pass_Glow(const entity_render_t *ent, const msurface_t *surf)
1009 {
1010         const surfmesh_t *mesh;
1011         rmeshstate_t m;
1012         float modelorg[3];
1013         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1014         memset(&m, 0, sizeof(m));
1015         m.blendfunc1 = GL_SRC_ALPHA;
1016         m.blendfunc2 = GL_ONE;
1017         m.wantoverbright = false;
1018         m.tex[0] = R_GetTexture(surf->currenttexture->glowtexture);
1019         R_Mesh_State(&m);
1020         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1021         {
1022                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1023                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1024                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1025                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1026                 RSurf_FoggedColors(varray_vertex, varray_color, 1, 1, 1, ent->alpha, mesh_colorscale, mesh->numverts, modelorg);
1027                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1028         }
1029 }
1030
1031 static void RSurfShader_Wall_Pass_Fog(const entity_render_t *ent, const msurface_t *surf)
1032 {
1033         const surfmesh_t *mesh;
1034         rmeshstate_t m;
1035         float modelorg[3];
1036         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1037         memset(&m, 0, sizeof(m));
1038         m.blendfunc1 = GL_SRC_ALPHA;
1039         m.blendfunc2 = GL_ONE;
1040         m.wantoverbright = false;
1041         m.tex[0] = R_GetTexture(surf->currenttexture->fogtexture);
1042         R_Mesh_State(&m);
1043         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1044         {
1045                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1046                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1047                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1048                 if (m.tex[0])
1049                         memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1050                 RSurf_FogPassColors(varray_vertex, varray_color, fogcolor[0], fogcolor[1], fogcolor[2], ent->alpha, mesh_colorscale, mesh->numverts, modelorg);
1051                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1052         }
1053 }
1054
1055 static void RSurfShader_OpaqueWall_Pass_TripleTexCombine(const entity_render_t *ent, const msurface_t *surf)
1056 {
1057         const surfmesh_t *mesh;
1058         static rmeshstate_t m;
1059         float cl;
1060         //memset(&m, 0, sizeof(m));
1061         m.blendfunc1 = GL_ONE;
1062         m.blendfunc2 = GL_ZERO;
1063         m.wantoverbright = false;
1064         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1065         m.texrgbscale[0] = 1.0f;
1066         m.tex[1] = R_GetTexture(surf->lightmaptexture);
1067         m.texrgbscale[1] = 4.0f;
1068         m.tex[2] = R_GetTexture(surf->currenttexture->detailtexture);
1069         m.texrgbscale[2] = 2.0f;
1070         R_Mesh_State(&m);
1071         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1072         {
1073                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1074                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1075                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1076                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1077                 memcpy(varray_texcoord[1], mesh->uv, mesh->numverts * sizeof(float[2]));
1078                 memcpy(varray_texcoord[2], mesh->ab, mesh->numverts * sizeof(float[2]));
1079                 cl = (float) (1 << lightscalebit) * mesh_colorscale;
1080                 R_FillColors(varray_color, mesh->numverts, cl, cl, cl, 1);
1081                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1082         }
1083 }
1084
1085 static void RSurfShader_OpaqueWall_Pass_BaseMTex(const entity_render_t *ent, const msurface_t *surf)
1086 {
1087         const surfmesh_t *mesh;
1088         rmeshstate_t m;
1089         float cl;
1090         memset(&m, 0, sizeof(m));
1091         m.blendfunc1 = GL_ONE;
1092         m.blendfunc2 = GL_ZERO;
1093         m.wantoverbright = true;
1094         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1095         m.tex[1] = R_GetTexture(surf->lightmaptexture);
1096         R_Mesh_State(&m);
1097         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1098         {
1099                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1100                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1101                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1102                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1103                 memcpy(varray_texcoord[1], mesh->uv, mesh->numverts * sizeof(float[2]));
1104                 cl = (float) (1 << lightscalebit) * mesh_colorscale;
1105                 R_FillColors(varray_color, mesh->numverts, cl, cl, cl, 1);
1106                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1107         }
1108 }
1109
1110 static void RSurfShader_OpaqueWall_Pass_BaseTexture(const entity_render_t *ent, const msurface_t *surf)
1111 {
1112         const surfmesh_t *mesh;
1113         rmeshstate_t m;
1114         float cl;
1115         memset(&m, 0, sizeof(m));
1116         m.blendfunc1 = GL_ONE;
1117         m.blendfunc2 = GL_ZERO;
1118         m.wantoverbright = false;
1119         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1120         R_Mesh_State(&m);
1121         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1122         {
1123                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1124                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1125                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1126                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1127                 cl = mesh_colorscale;
1128                 R_FillColors(varray_color, mesh->numverts, cl, cl, cl, 1);
1129                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1130         }
1131 }
1132
1133 static void RSurfShader_OpaqueWall_Pass_BaseLightmap(const entity_render_t *ent, const msurface_t *surf)
1134 {
1135         const surfmesh_t *mesh;
1136         rmeshstate_t m;
1137         float cl;
1138         memset(&m, 0, sizeof(m));
1139         m.blendfunc1 = GL_ZERO;
1140         m.blendfunc2 = GL_SRC_COLOR;
1141         m.wantoverbright = true;
1142         m.tex[0] = R_GetTexture(surf->lightmaptexture);
1143         R_Mesh_State(&m);
1144         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1145         {
1146                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1147                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1148                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1149                 memcpy(varray_texcoord[0], mesh->uv, mesh->numverts * sizeof(float[2]));
1150                 cl = (float) (1 << lightscalebit) * mesh_colorscale;
1151                 R_FillColors(varray_color, mesh->numverts, cl, cl, cl, 1);
1152                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1153         }
1154 }
1155
1156 static void RSurfShader_OpaqueWall_Pass_Light(const entity_render_t *ent, const msurface_t *surf)
1157 {
1158         const surfmesh_t *mesh;
1159         rmeshstate_t m;
1160
1161         if (surf->dlightframe != r_framecount)
1162                 return;
1163         if (ent->effects & EF_FULLBRIGHT)
1164                 return;
1165
1166         memset(&m, 0, sizeof(m));
1167         m.blendfunc1 = GL_SRC_ALPHA;
1168         m.blendfunc2 = GL_ONE;
1169         m.wantoverbright = true;
1170         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1171         R_Mesh_State(&m);
1172         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1173         {
1174                 if (RSurf_LightCheck(&ent->inversematrix, surf->dlightbits, mesh))
1175                 {
1176                         R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1177                         memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1178                         memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1179                         memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1180                         R_FillColors(varray_color, mesh->numverts, 0, 0, 0, 1);
1181                         RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, mesh->numverts, varray_vertex, varray_color);
1182                         RSurf_ScaleColors(varray_color, mesh_colorscale, mesh->numverts);
1183                         R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1184                 }
1185         }
1186 }
1187
1188 static void RSurfShader_OpaqueWall_Pass_Fog(const entity_render_t *ent, const msurface_t *surf)
1189 {
1190         const surfmesh_t *mesh;
1191         rmeshstate_t m;
1192         float modelorg[3];
1193         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1194         memset(&m, 0, sizeof(m));
1195         m.blendfunc1 = GL_SRC_ALPHA;
1196         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1197         m.wantoverbright = false;
1198         m.tex[0] = R_GetTexture(surf->currenttexture->fogtexture);
1199         R_Mesh_State(&m);
1200         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1201         {
1202                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1203                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1204                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1205                 if (m.tex[0])
1206                         memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1207                 RSurf_FogPassColors(varray_vertex, varray_color, fogcolor[0], fogcolor[1], fogcolor[2], 1, mesh_colorscale, mesh->numverts, modelorg);
1208                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1209         }
1210 }
1211
1212 static void RSurfShader_OpaqueWall_Pass_BaseDetail(const entity_render_t *ent, const msurface_t *surf)
1213 {
1214         const surfmesh_t *mesh;
1215         rmeshstate_t m;
1216         memset(&m, 0, sizeof(m));
1217         m.blendfunc1 = GL_DST_COLOR;
1218         m.blendfunc2 = GL_SRC_COLOR;
1219         m.wantoverbright = false;
1220         m.tex[0] = R_GetTexture(surf->currenttexture->detailtexture);
1221         R_Mesh_State(&m);
1222         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1223         {
1224                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1225                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1226                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1227                 memcpy(varray_texcoord[0], mesh->ab, mesh->numverts * sizeof(float[2]));
1228                 R_FillColors(varray_color, mesh->numverts, 1, 1, 1, 1);
1229                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1230         }
1231 }
1232
1233 static void RSurfShader_OpaqueWall_Pass_Glow(const entity_render_t *ent, const msurface_t *surf)
1234 {
1235         const surfmesh_t *mesh;
1236         rmeshstate_t m;
1237         memset(&m, 0, sizeof(m));
1238         m.blendfunc1 = GL_SRC_ALPHA;
1239         m.blendfunc2 = GL_ONE;
1240         m.wantoverbright = false;
1241         m.tex[0] = R_GetTexture(surf->currenttexture->glowtexture);
1242         R_Mesh_State(&m);
1243         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1244         {
1245                 R_Mesh_ResizeCheck(mesh->numverts, mesh->numtriangles);
1246                 memcpy(varray_element, mesh->index, mesh->numtriangles * sizeof(int[3]));
1247                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1248                 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1249                 R_FillColors(varray_color, mesh->numverts, mesh_colorscale, mesh_colorscale, mesh_colorscale, 1);
1250                 R_Mesh_Draw(mesh->numverts, mesh->numtriangles);
1251         }
1252 }
1253
1254 static void RSurfShader_Wall_Fullbright_Callback(const void *calldata1, int calldata2)
1255 {
1256         const entity_render_t *ent = calldata1;
1257         const msurface_t *surf = ent->model->surfaces + calldata2;
1258         R_Mesh_Matrix(&ent->matrix);
1259         RSurfShader_Wall_Pass_BaseFullbright(ent, surf);
1260         if (surf->currenttexture->glowtexture)
1261                 RSurfShader_Wall_Pass_Glow(ent, surf);
1262         if (fogenabled)
1263                 RSurfShader_Wall_Pass_Fog(ent, surf);
1264 }
1265
1266 static void RSurfShader_Wall_Fullbright(const entity_render_t *ent, const msurface_t *firstsurf)
1267 {
1268         const msurface_t *surf;
1269         vec3_t center;
1270         if (ent->effects & EF_ADDITIVE || ent->alpha < 1)
1271         {
1272                 for (surf = firstsurf;surf;surf = surf->chain)
1273                 {
1274                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1275                         R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Fullbright_Callback, ent, surf - ent->model->surfaces);
1276                 }
1277         }
1278         else
1279         {
1280                 for (surf = firstsurf;surf;surf = surf->chain)
1281                 {
1282                         if (surf->currenttexture->fogtexture != NULL)
1283                         {
1284                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1285                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Fullbright_Callback, ent, surf - ent->model->surfaces);
1286                         }
1287                         else
1288                                 RSurfShader_Wall_Pass_BaseFullbright(ent, surf);
1289                 }
1290                 for (surf = firstsurf;surf;surf = surf->chain)
1291                         if (surf->currenttexture->glowtexture)
1292                                 if (surf->currenttexture->fogtexture == NULL)
1293                                         RSurfShader_Wall_Pass_Glow(ent, surf);
1294                 if (fogenabled)
1295                         for (surf = firstsurf;surf;surf = surf->chain)
1296                                 if (surf->currenttexture->fogtexture == NULL)
1297                                         RSurfShader_Wall_Pass_Fog(ent, surf);
1298         }
1299 }
1300
1301 static void RSurfShader_Wall_Vertex_Callback(const void *calldata1, int calldata2)
1302 {
1303         const entity_render_t *ent = calldata1;
1304         const msurface_t *surf = ent->model->surfaces + calldata2;
1305         R_Mesh_Matrix(&ent->matrix);
1306         RSurfShader_Wall_Pass_BaseVertex(ent, surf);
1307         if (surf->currenttexture->glowtexture)
1308                 RSurfShader_Wall_Pass_Glow(ent, surf);
1309         if (fogenabled)
1310                 RSurfShader_Wall_Pass_Fog(ent, surf);
1311 }
1312
1313 static void RSurfShader_Wall_Vertex(const entity_render_t *ent, const msurface_t *firstsurf)
1314 {
1315         const msurface_t *surf;
1316         vec3_t center;
1317         if (ent->effects & EF_ADDITIVE || ent->alpha < 1)
1318         {
1319                 for (surf = firstsurf;surf;surf = surf->chain)
1320                 {
1321                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1322                         R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1323                 }
1324         }
1325         else
1326         {
1327                 for (surf = firstsurf;surf;surf = surf->chain)
1328                 {
1329                         if (surf->currenttexture->fogtexture != NULL)
1330                         {
1331                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1332                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1333                         }
1334                         else
1335                                 RSurfShader_Wall_Pass_BaseVertex(ent, surf);
1336                 }
1337                 for (surf = firstsurf;surf;surf = surf->chain)
1338                         if (surf->currenttexture->glowtexture)
1339                                 if (surf->currenttexture->fogtexture == NULL)
1340                                         RSurfShader_Wall_Pass_Glow(ent, surf);
1341                 if (fogenabled)
1342                         for (surf = firstsurf;surf;surf = surf->chain)
1343                                 if (surf->currenttexture->fogtexture == NULL)
1344                                         RSurfShader_Wall_Pass_Fog(ent, surf);
1345         }
1346 }
1347
1348 static void RSurfShader_Wall_Lightmap(const entity_render_t *ent, const msurface_t *firstsurf)
1349 {
1350         const msurface_t *surf;
1351         vec3_t center;
1352         if (ent->alpha < 1 || ent->effects & EF_ADDITIVE)
1353         {
1354                 for (surf = firstsurf;surf;surf = surf->chain)
1355                 {
1356                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1357                         R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1358                 }
1359         }
1360         else if (r_vertexsurfaces.integer || ent->alpha < 1 || ent->effects & EF_ADDITIVE)
1361         {
1362                 for (surf = firstsurf;surf;surf = surf->chain)
1363                 {
1364                         if (surf->currenttexture->fogtexture != NULL)
1365                         {
1366                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1367                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1368                         }
1369                         else
1370                                 RSurfShader_Wall_Pass_BaseVertex(ent, surf);
1371                 }
1372                 for (surf = firstsurf;surf;surf = surf->chain)
1373                         if (surf->currenttexture->glowtexture)
1374                                 if (surf->currenttexture->fogtexture == NULL)
1375                                         RSurfShader_Wall_Pass_Glow(ent, surf);
1376                 if (fogenabled)
1377                         for (surf = firstsurf;surf;surf = surf->chain)
1378                                 if (surf->currenttexture->fogtexture == NULL)
1379                                         RSurfShader_Wall_Pass_Fog(ent, surf);
1380         }
1381         else
1382         {
1383                 if (r_textureunits.integer >= 2)
1384                 {
1385                         if (r_textureunits.integer >= 3 && gl_combine.integer && r_detailtextures.integer)
1386                         {
1387                                 for (surf = firstsurf;surf;surf = surf->chain)
1388                                 {
1389                                         if (surf->currenttexture->fogtexture != NULL)
1390                                         {
1391                                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1392                                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1393                                         }
1394                                         else
1395                                                 RSurfShader_OpaqueWall_Pass_TripleTexCombine(ent, surf);
1396                                 }
1397                         }
1398                         else
1399                         {
1400                                 for (surf = firstsurf;surf;surf = surf->chain)
1401                                 {
1402                                         if (surf->currenttexture->fogtexture != NULL)
1403                                         {
1404                                                 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1405                                                 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1406                                         }
1407                                         else
1408                                                 RSurfShader_OpaqueWall_Pass_BaseMTex(ent, surf);
1409                                 }
1410                                 if (r_detailtextures.integer)
1411                                         for (surf = firstsurf;surf;surf = surf->chain)
1412                                                 if (surf->currenttexture->fogtexture == NULL)
1413                                                         RSurfShader_OpaqueWall_Pass_BaseDetail(ent, surf);
1414                         }
1415                 }
1416                 else
1417                 {
1418                         for (surf = firstsurf;surf;surf = surf->chain)
1419                         {
1420                                 if (surf->currenttexture->fogtexture != NULL)
1421                                 {
1422                                         Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1423                                         R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1424                                 }
1425                                 else
1426                                         RSurfShader_OpaqueWall_Pass_BaseTexture(ent, surf);
1427                         }
1428                         for (surf = firstsurf;surf;surf = surf->chain)
1429                                 if (surf->currenttexture->fogtexture == NULL)
1430                                         RSurfShader_OpaqueWall_Pass_BaseLightmap(ent, surf);
1431                         if (r_detailtextures.integer)
1432                                 for (surf = firstsurf;surf;surf = surf->chain)
1433                                         if (surf->currenttexture->fogtexture == NULL)
1434                                                 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, surf);
1435                 }
1436                 if (!r_dlightmap.integer)
1437                         for (surf = firstsurf;surf;surf = surf->chain)
1438                                 if (surf->dlightframe == r_framecount)
1439                                         if (surf->currenttexture->fogtexture == NULL)
1440                                                 RSurfShader_OpaqueWall_Pass_Light(ent, surf);
1441                 for (surf = firstsurf;surf;surf = surf->chain)
1442                         if (surf->currenttexture->glowtexture)
1443                                 if (surf->currenttexture->fogtexture == NULL)
1444                                         RSurfShader_OpaqueWall_Pass_Glow(ent, surf);
1445                 if (fogenabled)
1446                         for (surf = firstsurf;surf;surf = surf->chain)
1447                                 if (surf->currenttexture->fogtexture == NULL)
1448                                         RSurfShader_OpaqueWall_Pass_Fog(ent, surf);
1449         }
1450 }
1451
1452 Cshader_t Cshader_wall_vertex = {{NULL, RSurfShader_Wall_Vertex}, NULL};
1453 Cshader_t Cshader_wall_lightmap = {{NULL, RSurfShader_Wall_Lightmap}, NULL};
1454 Cshader_t Cshader_wall_fullbright = {{NULL, RSurfShader_Wall_Fullbright}, NULL};
1455 Cshader_t Cshader_water = {{NULL, RSurfShader_Water}, NULL};
1456 Cshader_t Cshader_sky = {{RSurfShader_Sky, NULL}, NULL};
1457
1458 int Cshader_count = 5;
1459 Cshader_t *Cshaders[5] =
1460 {
1461         &Cshader_wall_vertex,
1462         &Cshader_wall_lightmap,
1463         &Cshader_wall_fullbright,
1464         &Cshader_water,
1465         &Cshader_sky
1466 };
1467
1468 void R_DrawSurfaces(entity_render_t *ent, int sky, int normal)
1469 {
1470         int i, alttextures, texframe, framecount;
1471         texture_t *t;
1472         model_t *model;
1473         msurface_t *surf;
1474         vec3_t modelorg;
1475         Cshader_t *shader;
1476
1477         if (!ent->model)
1478                 return;
1479
1480         R_Mesh_Matrix(&ent->matrix);
1481
1482         for (i = 0;i < Cshader_count;i++)
1483                 Cshaders[i]->chain = NULL;
1484
1485         model = ent->model;
1486         alttextures = ent->frame != 0;
1487         texframe = (int)(cl.time * 5.0f);
1488
1489         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1490         for (i = 0;i < model->nummodelsurfaces;i++)
1491         {
1492                 surf = model->surfaces + i + model->firstmodelsurface;
1493                 if (surf->visframe == r_framecount)
1494                 {
1495                         // mark any backface surfaces as not visible
1496                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1497                         {
1498                                 if (!(surf->flags & SURF_PLANEBACK))
1499                                         surf->visframe = -1;
1500                         }
1501                         else
1502                         {
1503                                 if (surf->flags & SURF_PLANEBACK)
1504                                         surf->visframe = -1;
1505                         }
1506                         if (surf->visframe == r_framecount)
1507                         {
1508                                 if (r_cullsurface.integer && R_CullBox (surf->poly_mins, surf->poly_maxs))
1509                                         surf->visframe = -1;
1510                                 else
1511                                 {
1512                                         c_faces++;
1513                                         t = surf->texinfo->texture;
1514                                         if (t->animated)
1515                                         {
1516                                                 framecount = t->anim_total[alttextures];
1517                                                 if (framecount >= 2)
1518                                                         surf->currenttexture = t->anim_frames[alttextures][texframe % framecount];
1519                                                 else
1520                                                         surf->currenttexture = t->anim_frames[alttextures][0];
1521                                         }
1522                                         else
1523                                                 surf->currenttexture = t;
1524                                         surf->chain = surf->shader->chain;
1525                                         surf->shader->chain = surf;
1526                                 }
1527                         }
1528                 }
1529         }
1530
1531         if (sky)
1532         {
1533                 for (i = 0;i < Cshader_count;i++)
1534                 {
1535                         shader = Cshaders[i];
1536                         if (shader->chain && shader->shaderfunc[SHADERSTAGE_SKY])
1537                                 shader->shaderfunc[SHADERSTAGE_SKY](ent, shader->chain);
1538                 }
1539         }
1540
1541         if (normal)
1542         {
1543                 if (r_dynamic.integer)
1544                         R_MarkLights(ent);
1545
1546                 if (!r_vertexsurfaces.integer)
1547                 {
1548                         for (i = 0, surf = ent->model->surfaces + ent->model->firstmodelsurface;i < ent->model->nummodelsurfaces;i++, surf++)
1549                         {
1550                                 if (surf->visframe == r_framecount && surf->lightmaptexture != NULL)
1551                                 {
1552                                         if (surf->cached_dlight
1553                                         || surf->cached_ambient != r_ambient.value
1554                                         || surf->cached_lightscalebit != lightscalebit)
1555                                                 R_BuildLightMap(ent, surf, false); // base lighting changed
1556                                         else if (r_dynamic.integer)
1557                                         {
1558                                                 if  (surf->styles[0] != 255 && (d_lightstylevalue[surf->styles[0]] != surf->cached_light[0]
1559                                                 || (surf->styles[1] != 255 && (d_lightstylevalue[surf->styles[1]] != surf->cached_light[1]
1560                                                 || (surf->styles[2] != 255 && (d_lightstylevalue[surf->styles[2]] != surf->cached_light[2]
1561                                                 || (surf->styles[3] != 255 && (d_lightstylevalue[surf->styles[3]] != surf->cached_light[3]))))))))
1562                                                         R_BuildLightMap(ent, surf, false); // base lighting changed
1563                                                 else if (surf->dlightframe == r_framecount && r_dlightmap.integer)
1564                                                         R_BuildLightMap(ent, surf, true); // only dlights
1565                                         }
1566                                 }
1567                         }
1568                 }
1569
1570                 for (i = 0;i < Cshader_count;i++)
1571                 {
1572                         shader = Cshaders[i];
1573                         if (shader->chain && shader->shaderfunc[SHADERSTAGE_NORMAL])
1574                                 shader->shaderfunc[SHADERSTAGE_NORMAL](ent, shader->chain);
1575                 }
1576         }
1577 }
1578
1579 /*
1580 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
1581 {
1582         int i;
1583         float *v;
1584         rmeshstate_t m;
1585         const entity_render_t *ent = calldata1;
1586         const mportal_t *portal = ent->model->portals + calldata2;
1587         memset(&m, 0, sizeof(m));
1588         m.blendfunc1 = GL_SRC_ALPHA;
1589         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1590         m.wantoverbright = false;
1591         R_Mesh_Matrix(&ent->matrix);
1592         R_Mesh_State(&m);
1593         R_Mesh_ResizeCheck(portal->numpoints, portal->numpoints - 2);
1594         for (i = 0;i < mesh->numtriangles;i++)
1595         {
1596                 varray_element[i * 3 + 0] = 0;
1597                 varray_element[i * 3 + 1] = i + 1;
1598                 varray_element[i * 3 + 2] = i + 2;
1599         }
1600         i = portal - ent->model->portals;
1601         R_FillColors(varray_color, mesh->numverts,
1602                 ((i & 0x0007) >> 0) * (1.0f / 7.0f) * mesh_colorscale,
1603                 ((i & 0x0038) >> 3) * (1.0f / 7.0f) * mesh_colorscale,
1604                 ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * mesh_colorscale,
1605                 0.125f);
1606         if (PlaneDiff(r_origin, (&portal->plane)) > 0)
1607         {
1608                 for (i = portal->numpoints - 1, v = varray_vertex;i >= 0;i--, v += 4)
1609                         VectorCopy(portal->points[i].position, v);
1610         }
1611         else
1612                 for (i = 0, v = varray_vertex;i < portal->numpoints;i++, v += 4)
1613                         VectorCopy(portal->points[i].position, v);
1614         R_Mesh_Draw(portal->numpoints, portal->numpoints - 2);
1615 }
1616
1617 static void R_DrawPortals(entity_render_t *ent)
1618 {
1619         int i;
1620         mportal_t *portal, *endportal;
1621         float temp[3], center[3], f;
1622
1623         if (r_drawportals.integer < 1)
1624                 return;
1625
1626         for (portal = ent->model->portals, endportal = portal + ent->model->numportals;portal < endportal;portal++)
1627         {
1628                 if (portal->here->visframe == r_framecount || portal->past->visframe == r_framecount)
1629                 {
1630                         VectorClear(temp);
1631                         for (i = 0;i < portal->numpoints;i++)
1632                                 VectorAdd(temp, portal->points[i].position, temp);
1633                         f = ixtable[portal->numpoints];
1634                         VectorScale(temp, f, temp);
1635                         Matrix4x4_Transform(&ent->matrix, temp, center);
1636                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, ent, portal - ent->model->portals);
1637                 }
1638         }
1639 }
1640 */
1641
1642 void R_DrawBrushModel(entity_render_t *ent, int sky, int normal)
1643 {
1644         int i;
1645         msurface_t *surf;
1646         model_t *model;
1647         vec3_t modelorg;
1648
1649         // because bmodels can be reused, we have to decide which things to render
1650         // from scratch every time
1651         model = ent->model;
1652         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1653         for (i = 0;i < model->nummodelsurfaces;i++)
1654         {
1655                 surf = model->surfaces + model->firstmodelsurface + i;
1656                 surf->visframe = r_framecount;
1657                 surf->pvsframe = -1;
1658                 surf->worldnodeframe = -1;
1659                 surf->lightframe = -1;
1660                 surf->dlightframe = -1;
1661         }
1662         R_DrawSurfaces(ent, sky, normal);
1663 }
1664
1665 void R_SurfaceWorldNode (void)
1666 {
1667         msurface_t *surf;
1668         for (surf = r_pvsfirstsurface;surf;surf = surf->pvschain)
1669                 surf->visframe = r_framecount;
1670 }
1671
1672 /*
1673 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1674 {
1675         int portalstack, i;
1676         mportal_t *p, *pstack[8192];
1677         msurface_t *surf, **mark, **endmark;
1678         mleaf_t *leaf;
1679         // LordHavoc: portal-passage worldnode with PVS;
1680         // follows portals leading outward from viewleaf, does not venture
1681         // offscreen or into leafs that are not visible, faster than Quake's
1682         // RecursiveWorldNode
1683         leaf = viewleaf;
1684         leaf->worldnodeframe = r_framecount;
1685         portalstack = 0;
1686 loc0:
1687         c_leafs++;
1688         if (leaf->nummarksurfaces)
1689         {
1690                 for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1691                 {
1692                         surf = *mark++;
1693                         // make sure surfaces are only processed once
1694                         if (surf->worldnodeframe != r_framecount)
1695                         {
1696                                 surf->worldnodeframe = r_framecount;
1697                                 if (PlaneDist(r_origin, surf->plane) < surf->plane->dist)
1698                                 {
1699                                         if (surf->flags & SURF_PLANEBACK)
1700                                                 surf->visframe = r_framecount;
1701                                 }
1702                                 else
1703                                 {
1704                                         if (!(surf->flags & SURF_PLANEBACK))
1705                                                 surf->visframe = r_framecount;
1706                                 }
1707                         }
1708                 }
1709         }
1710         // follow portals into other leafs
1711         for (p = leaf->portals;p;p = p->next)
1712         {
1713                 leaf = p->past;
1714                 if (leaf->worldnodeframe != r_framecount)
1715                 {
1716                         leaf->worldnodeframe = r_framecount;
1717                         // FIXME: R_NotCulledBox is absolute, should be done relative
1718                         if (leaf->pvsframe == r_pvsframecount && R_NotCulledBox(leaf->mins, leaf->maxs))
1719                         {
1720                                 p->visframe = r_framecount;
1721                                 pstack[portalstack++] = p;
1722                                 goto loc0;
1723 loc1:
1724                                 p = pstack[--portalstack];
1725                         }
1726                 }
1727         }
1728         if (portalstack)
1729                 goto loc1;
1730 }
1731 */
1732
1733 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1734 {
1735         int c, leafstackpos;
1736         mleaf_t *leaf, *leafstack[8192];
1737         mportal_t *p;
1738         msurface_t **mark;
1739         vec3_t modelorg;
1740         // LordHavoc: portal-passage worldnode with PVS;
1741         // follows portals leading outward from viewleaf, does not venture
1742         // offscreen or into leafs that are not visible, faster than Quake's
1743         // RecursiveWorldNode
1744         Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1745         viewleaf->worldnodeframe = r_framecount;
1746         leafstack[0] = viewleaf;
1747         leafstackpos = 1;
1748         while (leafstackpos)
1749         {
1750                 c_leafs++;
1751                 leaf = leafstack[--leafstackpos];
1752                 // only useful for drawing portals
1753                 //leaf->visframe = r_framecount;
1754                 // draw any surfaces bounding this leaf
1755                 if (leaf->nummarksurfaces)
1756                         for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1757                                 (*mark++)->visframe = r_framecount;
1758                 // follow portals into other leafs
1759                 for (p = leaf->portals;p;p = p->next)
1760                 {
1761                         leaf = p->past;
1762                         if (leaf->worldnodeframe != r_framecount)
1763                         {
1764                                 leaf->worldnodeframe = r_framecount;
1765                                 // FIXME: R_NotCulledBox is absolute, should be done relative
1766                                 if (leaf->pvsframe == r_pvsframecount && R_NotCulledBox(leaf->mins, leaf->maxs))
1767                                         leafstack[leafstackpos++] = leaf;
1768                         }
1769                 }
1770         }
1771         //if (r_drawportals.integer)
1772         //      R_DrawPortals(ent);
1773 }
1774
1775
1776 void R_PVSUpdate (mleaf_t *viewleaf)
1777 {
1778         int i, j, l, c, bits;
1779         mleaf_t *leaf;
1780         qbyte *vis;
1781         msurface_t **mark, *surf;
1782
1783         if (r_pvsviewleaf == viewleaf && r_pvsviewleafnovis == r_novis.integer)
1784                 return;
1785
1786         r_pvsframecount++;
1787         r_pvsviewleaf = viewleaf;
1788         r_pvsviewleafnovis = r_novis.integer;
1789
1790         if (viewleaf)
1791         {
1792                 vis = Mod_LeafPVS (viewleaf, cl.worldmodel);
1793                 for (j = 0;j < cl.worldmodel->numleafs;j += 8)
1794                 {
1795                         bits = *vis++;
1796                         if (bits)
1797                         {
1798                                 l = cl.worldmodel->numleafs - j;
1799                                 if (l > 8)
1800                                         l = 8;
1801                                 for (i = 0;i < l;i++)
1802                                 {
1803                                         if (bits & (1 << i))
1804                                         {
1805                                                 leaf = &cl.worldmodel->leafs[j + i + 1];
1806                                                 leaf->pvsframe = r_pvsframecount;
1807                                                 // mark surfaces bounding this leaf as visible
1808                                                 for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1809                                                         (*mark++)->pvsframe = r_pvsframecount;
1810                                         }
1811                                 }
1812                         }
1813                 }
1814                 // build pvs surfacechain
1815                 r_pvsfirstsurface = NULL;
1816                 mark = &r_pvsfirstsurface;
1817                 for (c = cl.worldmodel->nummodelsurfaces, surf = cl.worldmodel->surfaces + cl.worldmodel->firstmodelsurface;c;c--, surf++)
1818                 {
1819                         if (surf->pvsframe == r_pvsframecount)
1820                         {
1821                                 *mark = surf;
1822                                 mark = &surf->pvschain;
1823                         }
1824                 }
1825                 *mark = NULL;
1826         }
1827 }
1828
1829 /*
1830 =============
1831 R_DrawWorld
1832 =============
1833 */
1834 void R_DrawWorld (entity_render_t *ent)
1835 {
1836         mleaf_t *viewleaf;
1837         viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
1838         R_PVSUpdate(viewleaf);
1839         if (!viewleaf)
1840                 return;
1841         if (r_surfaceworldnode.integer || viewleaf->contents == CONTENTS_SOLID)
1842                 R_SurfaceWorldNode ();
1843         else
1844                 R_PortalWorldNode (ent, viewleaf);
1845         R_DrawSurfaces(ent, true, true);
1846 }
1847
1848 /*
1849 =================
1850 R_DrawBrushModel
1851 =================
1852 */
1853 void R_DrawBrushModelSky (entity_render_t *ent)
1854 {
1855         R_DrawBrushModel(ent, true, false);
1856 }
1857
1858 void R_DrawBrushModelNormal (entity_render_t *ent)
1859 {
1860         c_bmodels++;
1861         R_DrawBrushModel(ent, false, true);
1862 }
1863
1864 static void gl_surf_start(void)
1865 {
1866 }
1867
1868 static void gl_surf_shutdown(void)
1869 {
1870 }
1871
1872 static void gl_surf_newmap(void)
1873 {
1874         // reset pvs visibility variables so it will update on first frame
1875         r_pvsframecount = 1;
1876         r_pvsviewleaf = NULL;
1877         r_pvsviewleafnovis = false;
1878         r_pvsfirstsurface = NULL;
1879 }
1880
1881 void GL_Surf_Init(void)
1882 {
1883         int i;
1884         dlightdivtable[0] = 4194304;
1885         for (i = 1;i < 32768;i++)
1886                 dlightdivtable[i] = 4194304 / (i << 7);
1887
1888         Cvar_RegisterVariable(&r_ambient);
1889         Cvar_RegisterVariable(&r_vertexsurfaces);
1890         Cvar_RegisterVariable(&r_dlightmap);
1891         //Cvar_RegisterVariable(&r_drawportals);
1892         Cvar_RegisterVariable(&r_testvis);
1893         Cvar_RegisterVariable(&r_floatbuildlightmap);
1894         Cvar_RegisterVariable(&r_detailtextures);
1895         Cvar_RegisterVariable(&r_surfaceworldnode);
1896         Cvar_RegisterVariable(&r_cullsurface);
1897
1898         R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
1899 }
1900