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
  38 static int dlightdivtable[32768];
  39
  40 static int R_IntAddDynamicLights (msurface_t *surf)
  41 {
  42         int sdtable[256], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract;
  43         unsigned int *bl;
  44         float dist, impact[3], local[3];
  45
  46         // LordHavoc: use 64bit integer...  shame it's not very standardized...
  47 #if _MSC_VER || __BORLANDC__
  48         __int64     k;
  49 #else
  50         long long   k;
  51 #endif
  52
  53         lit = false;
  54
  55         smax = (surf->extents[0] >> 4) + 1;
  56         tmax = (surf->extents[1] >> 4) + 1;
  57         smax3 = smax * 3;
  58
  59         for (lnum = 0; lnum < r_numdlights; lnum++)
  60         {
  61                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
  62                         continue;                                       // not lit by this light
  63
  64                 softwareuntransform(r_dlight[lnum].origin, local);
  65                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
  66
  67                 // for comparisons to minimum acceptable light
  68                 // compensate for LIGHTOFFSET
  69                 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
  70
  71                 dist2 = dist * dist;
  72                 dist2 += LIGHTOFFSET;
  73                 if (dist2 >= maxdist)
  74                         continue;
  75
  76                 if (surf->plane->type < 3)
  77                 {
  78                         VectorCopy(local, impact);
  79                         impact[surf->plane->type] -= dist;
  80                 }
  81                 else
  82                 {
  83                         impact[0] = local[0] - surf->plane->normal[0] * dist;
  84                         impact[1] = local[1] - surf->plane->normal[1] * dist;
  85                         impact[2] = local[2] - surf->plane->normal[2] * dist;
  86                 }
  87
  88                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
  89                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
  90
  91                 s = bound(0, impacts, smax * 16) - impacts;
  92                 t = bound(0, impactt, tmax * 16) - impactt;
  93                 i = s * s + t * t + dist2;
  94                 if (i > maxdist)
  95                         continue;
  96
  97                 // reduce calculations
  98                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
  99                         sdtable[s] = i * i + dist2;
 100
 101                 maxdist3 = maxdist - dist2;
 102
 103                 // convert to 8.8 blocklights format
 104                 red = r_dlight[lnum].light[0];
 105                 green = r_dlight[lnum].light[1];
 106                 blue = r_dlight[lnum].light[2];
 107                 subtract = (int) (r_dlight[lnum].subtract * 4194304.0f);
 108                 bl = intblocklights;
 109
 110                 i = impactt;
 111                 for (t = 0;t < tmax;t++, i -= 16)
 112                 {
 113                         td = i * i;
 114                         // make sure some part of it is visible on this line
 115                         if (td < maxdist3)
 116                         {
 117                                 maxdist2 = maxdist - td;
 118                                 for (s = 0;s < smax;s++)
 119                                 {
 120                                         if (sdtable[s] < maxdist2)
 121                                         {
 122                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
 123                                                 if (k > 0)
 124                                                 {
 125                                                         bl[0] += (red   * k) >> 7;
 126                                                         bl[1] += (green * k) >> 7;
 127                                                         bl[2] += (blue  * k) >> 7;
 128                                                         lit = true;
 129                                                 }
 130                                         }
 131                                         bl += 3;
 132                                 }
 133                         }
 134                         else // skip line
 135                                 bl += smax3;
 136                 }
 137         }
 138         return lit;
 139 }
 140
 141 static int R_FloatAddDynamicLights (msurface_t *surf)
 142 {
 143         int lnum, s, t, smax, tmax, smax3, lit, impacts, impactt;
 144         float sdtable[256], *bl, k, dist, dist2, maxdist, maxdist2, maxdist3, td1, td, red, green, blue, impact[3], local[3], subtract;
 145
 146         lit = false;
 147
 148         smax = (surf->extents[0] >> 4) + 1;
 149         tmax = (surf->extents[1] >> 4) + 1;
 150         smax3 = smax * 3;
 151
 152         for (lnum = 0; lnum < r_numdlights; lnum++)
 153         {
 154                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
 155                         continue;                                       // not lit by this light
 156
 157                 softwareuntransform(r_dlight[lnum].origin, local);
 158                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
 159
 160                 // for comparisons to minimum acceptable light
 161                 // compensate for LIGHTOFFSET
 162                 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
 163
 164                 dist2 = dist * dist;
 165                 dist2 += LIGHTOFFSET;
 166                 if (dist2 >= maxdist)
 167                         continue;
 168
 169                 if (surf->plane->type < 3)
 170                 {
 171                         VectorCopy(local, impact);
 172                         impact[surf->plane->type] -= dist;
 173                 }
 174                 else
 175                 {
 176                         impact[0] = local[0] - surf->plane->normal[0] * dist;
 177                         impact[1] = local[1] - surf->plane->normal[1] * dist;
 178                         impact[2] = local[2] - surf->plane->normal[2] * dist;
 179                 }
 180
 181                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 182                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 183
 184                 td = bound(0, impacts, smax * 16) - impacts;
 185                 td1 = bound(0, impactt, tmax * 16) - impactt;
 186                 td = td * td + td1 * td1 + dist2;
 187                 if (td > maxdist)
 188                         continue;
 189
 190                 // reduce calculations
 191                 for (s = 0, td1 = impacts; s < smax; s++, td1 -= 16.0f)
 192                         sdtable[s] = td1 * td1 + dist2;
 193
 194                 maxdist3 = maxdist - dist2;
 195
 196                 // convert to 8.8 blocklights format
 197                 red = r_dlight[lnum].light[0];
 198                 green = r_dlight[lnum].light[1];
 199                 blue = r_dlight[lnum].light[2];
 200                 subtract = r_dlight[lnum].subtract * 32768.0f;
 201                 bl = floatblocklights;
 202
 203                 td1 = impactt;
 204                 for (t = 0;t < tmax;t++, td1 -= 16.0f)
 205                 {
 206                         td = td1 * td1;
 207                         // make sure some part of it is visible on this line
 208                         if (td < maxdist3)
 209                         {
 210                                 maxdist2 = maxdist - td;
 211                                 for (s = 0;s < smax;s++)
 212                                 {
 213                                         if (sdtable[s] < maxdist2)
 214                                         {
 215                                                 k = (32768.0f / (sdtable[s] + td)) - subtract;
 216                                                 bl[0] += red   * k;
 217                                                 bl[1] += green * k;
 218                                                 bl[2] += blue  * k;
 219                                                 lit = true;
 220                                         }
 221                                         bl += 3;
 222                                 }
 223                         }
 224                         else // skip line
 225                                 bl += smax3;
 226                 }
 227         }
 228         return lit;
 229 }
 230
 231 /*
 232 ===============
 233 R_BuildLightMap
 234
 235 Combine and scale multiple lightmaps into the 8.8 format in blocklights
 236 ===============
 237 */
 238 static void R_BuildLightMap (msurface_t *surf, int dlightchanged)
 239 {
 240         if (!r_floatbuildlightmap.integer)
 241         {
 242                 int smax, tmax, i, j, size, size3, shift, maps, stride, l;
 243                 unsigned int *bl, scale;
 244                 qbyte *lightmap, *out, *stain;
 245
 246                 // update cached lighting info
 247                 surf->cached_dlight = 0;
 248                 surf->cached_lightscalebit = lightscalebit;
 249                 surf->cached_ambient = r_ambient.value;
 250                 surf->cached_light[0] = d_lightstylevalue[surf->styles[0]];
 251                 surf->cached_light[1] = d_lightstylevalue[surf->styles[1]];
 252                 surf->cached_light[2] = d_lightstylevalue[surf->styles[2]];
 253                 surf->cached_light[3] = d_lightstylevalue[surf->styles[3]];
 254
 255                 smax = (surf->extents[0]>>4)+1;
 256                 tmax = (surf->extents[1]>>4)+1;
 257                 size = smax*tmax;
 258                 size3 = size*3;
 259                 lightmap = surf->samples;
 260
 261         // set to full bright if no light data
 262                 bl = intblocklights;
 263                 if ((currentrenderentity->effects & EF_FULLBRIGHT) || !currentrenderentity->model->lightdata)
 264                 {
 265                         for (i = 0;i < size3;i++)
 266                                 bl[i] = 255*256;
 267                 }
 268                 else
 269                 {
 270         // clear to no light
 271                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 272                         if (j)
 273                         {
 274                                 for (i = 0;i < size3;i++)
 275                                         *bl++ = j;
 276                         }
 277                         else
 278                                 memset(bl, 0, size*3*sizeof(unsigned int));
 279
 280                         if (surf->dlightframe == r_framecount && r_dlightmap.integer)
 281                         {
 282                                 surf->cached_dlight = R_IntAddDynamicLights(surf);
 283                                 if (surf->cached_dlight)
 284                                         c_light_polys++;
 285                                 else if (dlightchanged)
 286                                         return; // don't upload if only updating dlights and none mattered
 287                         }
 288
 289         // add all the lightmaps
 290                         if (lightmap)
 291                         {
 292                                 bl = intblocklights;
 293                                 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 294                                         for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 295                                                 bl[i] += lightmap[i] * scale;
 296                         }
 297                 }
 298
 299                 stain = surf->stainsamples;
 300                 bl = intblocklights;
 301                 out = templight;
 302                 // deal with lightmap brightness scale
 303                 shift = 7 + lightscalebit + 8;
 304                 if (currentrenderentity->model->lightmaprgba)
 305                 {
 306                         stride = (surf->lightmaptexturestride - smax) * 4;
 307                         for (i = 0;i < tmax;i++, out += stride)
 308                         {
 309                                 for (j = 0;j < smax;j++)
 310                                 {
 311                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 312                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 313                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 314                                         *out++ = 255;
 315                                 }
 316                         }
 317                 }
 318                 else
 319                 {
 320                         stride = (surf->lightmaptexturestride - smax) * 3;
 321                         for (i = 0;i < tmax;i++, out += stride)
 322                         {
 323                                 for (j = 0;j < smax;j++)
 324                                 {
 325                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 326                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 327                                         l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
 328                                 }
 329                         }
 330                 }
 331
 332                 R_UpdateTexture(surf->lightmaptexture, templight);
 333         }
 334         else
 335         {
 336                 int smax, tmax, i, j, size, size3, maps, stride, l;
 337                 float *bl, scale;
 338                 qbyte *lightmap, *out, *stain;
 339
 340                 // update cached lighting info
 341                 surf->cached_dlight = 0;
 342                 surf->cached_lightscalebit = lightscalebit;
 343                 surf->cached_ambient = r_ambient.value;
 344                 surf->cached_light[0] = d_lightstylevalue[surf->styles[0]];
 345                 surf->cached_light[1] = d_lightstylevalue[surf->styles[1]];
 346                 surf->cached_light[2] = d_lightstylevalue[surf->styles[2]];
 347                 surf->cached_light[3] = d_lightstylevalue[surf->styles[3]];
 348
 349                 smax = (surf->extents[0]>>4)+1;
 350                 tmax = (surf->extents[1]>>4)+1;
 351                 size = smax*tmax;
 352                 size3 = size*3;
 353                 lightmap = surf->samples;
 354
 355         // set to full bright if no light data
 356                 bl = floatblocklights;
 357                 if ((currentrenderentity->effects & EF_FULLBRIGHT) || !currentrenderentity->model->lightdata)
 358                         j = 255*256;
 359                 else
 360                         j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
 361
 362                 // clear to no light
 363                 if (j)
 364                 {
 365                         for (i = 0;i < size3;i++)
 366                                 *bl++ = j;
 367                 }
 368                 else
 369                         memset(bl, 0, size*3*sizeof(float));
 370
 371                 if (surf->dlightframe == r_framecount && r_dlightmap.integer)
 372                 {
 373                         surf->cached_dlight = R_FloatAddDynamicLights(surf);
 374                         if (surf->cached_dlight)
 375                                 c_light_polys++;
 376                         else if (dlightchanged)
 377                                 return; // don't upload if only updating dlights and none mattered
 378                 }
 379
 380                 // add all the lightmaps
 381                 if (lightmap)
 382                 {
 383                         bl = floatblocklights;
 384                         for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
 385                                 for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
 386                                         bl[i] += lightmap[i] * scale;
 387                 }
 388
 389                 stain = surf->stainsamples;
 390                 bl = floatblocklights;
 391                 out = templight;
 392                 // deal with lightmap brightness scale
 393                 scale = 1.0f / (1 << (7 + lightscalebit + 8));
 394                 if (currentrenderentity->model->lightmaprgba)
 395                 {
 396                         stride = (surf->lightmaptexturestride - smax) * 4;
 397                         for (i = 0;i < tmax;i++, out += stride)
 398                         {
 399                                 for (j = 0;j < smax;j++)
 400                                 {
 401                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 402                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 403                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 404                                         *out++ = 255;
 405                                 }
 406                         }
 407                 }
 408                 else
 409                 {
 410                         stride = (surf->lightmaptexturestride - smax) * 3;
 411                         for (i = 0;i < tmax;i++, out += stride)
 412                         {
 413                                 for (j = 0;j < smax;j++)
 414                                 {
 415                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 416                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 417                                         l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
 418                                 }
 419                         }
 420                 }
 421
 422                 R_UpdateTexture(surf->lightmaptexture, templight);
 423         }
 424 }
 425
 426 void R_StainNode (mnode_t *node, model_t *model, vec3_t origin, float radius, int icolor[8])
 427 {
 428         float ndist;
 429         msurface_t *surf, *endsurf;
 430         int sdtable[256], td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, dist2, impacts, impactt, subtract, a, stained, cr, cg, cb, ca, ratio;
 431         qbyte *bl;
 432         vec3_t impact;
 433         // LordHavoc: use 64bit integer...  shame it's not very standardized...
 434 #if _MSC_VER || __BORLANDC__
 435         __int64     k;
 436 #else
 437         long long   k;
 438 #endif
 439
 440
 441         // for comparisons to minimum acceptable light
 442         // compensate for 4096 offset
 443         maxdist = radius * radius + 4096;
 444
 445         // clamp radius to avoid exceeding 32768 entry division table
 446         if (maxdist > 4194304)
 447                 maxdist = 4194304;
 448
 449         subtract = (int) ((1.0f / maxdist) * 4194304.0f);
 450
 451 loc0:
 452         if (node->contents < 0)
 453                 return;
 454         ndist = PlaneDiff(origin, node->plane);
 455         if (ndist > radius)
 456         {
 457                 node = node->children[0];
 458                 goto loc0;
 459         }
 460         if (ndist < -radius)
 461         {
 462                 node = node->children[1];
 463                 goto loc0;
 464         }
 465
 466         dist2 = ndist * ndist;
 467         dist2 += 4096.0f;
 468         if (dist2 < maxdist)
 469         {
 470                 maxdist3 = maxdist - dist2;
 471
 472                 if (node->plane->type < 3)
 473                 {
 474                         VectorCopy(origin, impact);
 475                         impact[node->plane->type] -= ndist;
 476                 }
 477                 else
 478                 {
 479                         impact[0] = origin[0] - node->plane->normal[0] * ndist;
 480                         impact[1] = origin[1] - node->plane->normal[1] * ndist;
 481                         impact[2] = origin[2] - node->plane->normal[2] * ndist;
 482                 }
 483
 484                 for (surf = model->surfaces + node->firstsurface, endsurf = surf + node->numsurfaces;surf < endsurf;surf++)
 485                 {
 486                         if (surf->stainsamples)
 487                         {
 488                                 smax = (surf->extents[0] >> 4) + 1;
 489                                 tmax = (surf->extents[1] >> 4) + 1;
 490
 491                                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 492                                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 493
 494                                 s = bound(0, impacts, smax * 16) - impacts;
 495                                 t = bound(0, impactt, tmax * 16) - impactt;
 496                                 i = s * s + t * t + dist2;
 497                                 if (i > maxdist)
 498                                         continue;
 499
 500                                 // reduce calculations
 501                                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
 502                                         sdtable[s] = i * i + dist2;
 503
 504                                 // convert to 8.8 blocklights format
 505                                 bl = surf->stainsamples;
 506                                 smax3 = smax * 3;
 507                                 stained = false;
 508
 509                                 i = impactt;
 510                                 for (t = 0;t < tmax;t++, i -= 16)
 511                                 {
 512                                         td = i * i;
 513                                         // make sure some part of it is visible on this line
 514                                         if (td < maxdist3)
 515                                         {
 516                                                 maxdist2 = maxdist - td;
 517                                                 for (s = 0;s < smax;s++)
 518                                                 {
 519                                                         if (sdtable[s] < maxdist2)
 520                                                         {
 521                                                                 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
 522                                                                 if (k > 0)
 523                                                                 {
 524                                                                         ratio = rand() & 255;
 525                                                                         ca = (((icolor[7] - icolor[3]) * ratio) >> 8) + icolor[3];
 526                                                                         a = (ca * k) >> 8;
 527                                                                         if (a > 0)
 528                                                                         {
 529                                                                                 a = bound(0, a, 256);
 530                                                                                 cr = (((icolor[4] - icolor[0]) * ratio) >> 8) + icolor[0];
 531                                                                                 cg = (((icolor[5] - icolor[1]) * ratio) >> 8) + icolor[1];
 532                                                                                 cb = (((icolor[6] - icolor[2]) * ratio) >> 8) + icolor[2];
 533                                                                                 bl[0] = (qbyte) ((((cr - (int) bl[0]) * a) >> 8) + (int) bl[0]);
 534                                                                                 bl[1] = (qbyte) ((((cg - (int) bl[1]) * a) >> 8) + (int) bl[1]);
 535                                                                                 bl[2] = (qbyte) ((((cb - (int) bl[2]) * a) >> 8) + (int) bl[2]);
 536                                                                                 stained = true;
 537                                                                         }
 538                                                                 }
 539                                                         }
 540                                                         bl += 3;
 541                                                 }
 542                                         }
 543                                         else // skip line
 544                                                 bl += smax3;
 545                                 }
 546                                 // force lightmap upload
 547                                 if (stained)
 548                                         surf->cached_dlight = true;
 549                         }
 550                 }
 551         }
 552
 553         if (node->children[0]->contents >= 0)
 554         {
 555                 if (node->children[1]->contents >= 0)
 556                 {
 557                         R_StainNode(node->children[0], model, origin, radius, icolor);
 558                         node = node->children[1];
 559                         goto loc0;
 560                 }
 561                 else
 562                 {
 563                         node = node->children[0];
 564                         goto loc0;
 565                 }
 566         }
 567         else if (node->children[1]->contents >= 0)
 568         {
 569                 node = node->children[1];
 570                 goto loc0;
 571         }
 572 }
 573
 574 void R_Stain (vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2)
 575 {
 576         int n, icolor[8];
 577         entity_render_t *ent;
 578         model_t *model;
 579         vec3_t org;
 580         icolor[0] = cr1;
 581         icolor[1] = cg1;
 582         icolor[2] = cb1;
 583         icolor[3] = ca1;
 584         icolor[4] = cr2;
 585         icolor[5] = cg2;
 586         icolor[6] = cb2;
 587         icolor[7] = ca2;
 588
 589         model = cl.worldmodel;
 590         softwaretransformidentity();
 591         R_StainNode(model->nodes + model->hulls[0].firstclipnode, model, origin, radius, icolor);
 592
 593         // look for embedded bmodels
 594         for (n = 0;n < cl_num_brushmodel_entities;n++)
 595         {
 596                 ent = cl_brushmodel_entities[n];
 597                 model = ent->model;
 598                 if (model && model->name[0] == '*')
 599                 {
 600                         Mod_CheckLoaded(model);
 601                         if (model->type == mod_brush)
 602                         {
 603                                 softwaretransformforentity(ent);
 604                                 softwareuntransform(origin, org);
 605                                 R_StainNode(model->nodes + model->hulls[0].firstclipnode, model, org, radius, icolor);
 606                         }
 607                 }
 608         }
 609 }
 610
 611
 612 /*
 613 =============================================================
 614
 615         BRUSH MODELS
 616
 617 =============================================================
 618 */
 619
 620 static void RSurfShader_Sky(msurface_t *firstsurf)
 621 {
 622         msurface_t *surf;
 623         int i;
 624         surfvertex_t *v;
 625         surfmesh_t *mesh;
 626         rmeshbufferinfo_t m;
 627         float cr, cg, cb, ca;
 628         float *outv, *outc;
 629
 630         // LordHavoc: HalfLife maps have freaky skypolys...
 631         if (currentrenderentity->model->ishlbsp)
 632                 return;
 633
 634         if (skyrendernow)
 635         {
 636                 skyrendernow = false;
 637                 if (skyrendermasked)
 638                         R_Sky();
 639         }
 640         for (surf = firstsurf;surf;surf = surf->chain)
 641         {
 642                 // draw depth-only polys
 643                 memset(&m, 0, sizeof(m));
 644                 m.transparent = false;
 645                 if (skyrendermasked)
 646                 {
 647                         m.blendfunc1 = GL_ZERO;
 648                         m.blendfunc2 = GL_ONE;
 649                         m.depthwrite = true;
 650                 }
 651                 else
 652                 {
 653                         m.blendfunc1 = GL_ONE;
 654                         m.blendfunc2 = GL_ZERO;
 655                         m.depthwrite = false;
 656                 }
 657                 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 658                 {
 659                         m.numtriangles = mesh->numtriangles;
 660                         m.numverts = mesh->numverts;
 661                         if (R_Mesh_Draw_GetBuffer(&m))
 662                         {
 663                                 cr = fogcolor[0] * m.colorscale;
 664                                 cg = fogcolor[1] * m.colorscale;
 665                                 cb = fogcolor[2] * m.colorscale;
 666                                 ca = 1;
 667                                 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
 668                                 for (i = 0, v = mesh->vertex, outv = m.vertex;i < m.numverts;i++, v++, outv += 4, outc += 4)
 669                                 {
 670                                         softwaretransform(v->v, outv);
 671                                 }
 672                                 for (i = 0, outc = m.color;i < m.numverts;i++, outc += 4)
 673                                 {
 674                                         outc[0] = cr;
 675                                         outc[1] = cg;
 676                                         outc[2] = cb;
 677                                         outc[3] = ca;
 678                                 }
 679                         }
 680                 }
 681         }
 682 }
 683
 684 static int RSurf_LightSeparate(int *dlightbits, int numverts, float *vert, float *color)
 685 {
 686         float f, *v, *c;
 687         int i, l, lit = false;
 688         rdlight_t *rd;
 689         vec3_t lightorigin;
 690         for (l = 0;l < r_numdlights;l++)
 691         {
 692                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 693                 {
 694                         rd = &r_dlight[l];
 695                         // FIXME: support softwareuntransform here and make bmodels use hardware transform?
 696                         VectorCopy(rd->origin, lightorigin);
 697                         for (i = 0, v = vert, c = color;i < numverts;i++, v += 4, c += 4)
 698                         {
 699                                 f = VectorDistance2(v, lightorigin) + LIGHTOFFSET;
 700                                 if (f < rd->cullradius2)
 701                                 {
 702                                         f = (1.0f / f) - rd->subtract;
 703                                         VectorMA(c, f, rd->light, c);
 704                                         lit = true;
 705                                 }
 706                         }
 707                 }
 708         }
 709         return lit;
 710 }
 711
 712 // note: this untransforms lights to do the checking,
 713 // and takes surf->mesh->vertex data
 714 static int RSurf_LightCheck(int *dlightbits, surfmesh_t *mesh)
 715 {
 716         int i, l;
 717         rdlight_t *rd;
 718         vec3_t lightorigin;
 719         surfvertex_t *sv;
 720         for (l = 0;l < r_numdlights;l++)
 721         {
 722                 if (dlightbits[l >> 5] & (1 << (l & 31)))
 723                 {
 724                         rd = &r_dlight[l];
 725                         softwareuntransform(rd->origin, lightorigin);
 726                         for (i = 0, sv = mesh->vertex;i < mesh->numverts;i++, sv++)
 727                                 if (VectorDistance2(sv->v, lightorigin) < rd->cullradius2)
 728                                         return true;
 729                 }
 730         }
 731         return false;
 732 }
 733
 734 static void RSurfShader_Water_Pass_Base(msurface_t *surf)
 735 {
 736         int i, size3;
 737         surfvertex_t *v;
 738         float *outv, *outc, *outst, cl, diff[3];
 739         float base[3], scale, f;
 740         qbyte *lm;
 741         surfmesh_t *mesh;
 742         rmeshbufferinfo_t m;
 743         float alpha = currentrenderentity->alpha * (surf->flags & SURF_DRAWNOALPHA ? 1 : r_wateralpha.value);
 744         memset(&m, 0, sizeof(m));
 745         if (currentrenderentity->effects & EF_ADDITIVE)
 746         {
 747                 m.transparent = true;
 748                 m.blendfunc1 = GL_SRC_ALPHA;
 749                 m.blendfunc2 = GL_ONE;
 750         }
 751         else if (surf->currenttexture->fogtexture != NULL || alpha < 1)
 752         {
 753                 m.transparent = true;
 754                 m.blendfunc1 = GL_SRC_ALPHA;
 755                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 756         }
 757         else
 758         {
 759                 m.transparent = false;
 760                 m.blendfunc1 = GL_ONE;
 761                 m.blendfunc2 = GL_ZERO;
 762         }
 763         m.depthwrite = false;
 764         m.depthdisable = false;
 765         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
 766         if (surf->flags & SURF_DRAWFULLBRIGHT || currentrenderentity->effects & EF_FULLBRIGHT)
 767         {
 768                 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 769                 {
 770                         m.numtriangles = mesh->numtriangles;
 771                         m.numverts = mesh->numverts;
 772                         if (R_Mesh_Draw_GetBuffer(&m))
 773                         {
 774                                 base[0] = base[1] = base[2] = 1.0f * m.colorscale;
 775                                 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
 776                                 for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
 777                                 {
 778                                         softwaretransform(v->v, outv);
 779                                         outv[3] = 1;
 780                                         VectorCopy(base, outc);
 781                                         outc[3] = alpha;
 782                                         outst[0] = v->st[0];
 783                                         outst[1] = v->st[1];
 784                                         if (fogenabled)
 785                                         {
 786                                                 VectorSubtract(outv, r_origin, diff);
 787                                                 f = 1 - exp(fogdensity/DotProduct(diff, diff));
 788                                                 VectorScale(outc, f, outc);
 789                                         }
 790                                 }
 791                         }
 792                 }
 793         }
 794         else
 795         {
 796                 size3 = ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3;
 797                 base[0] = base[1] = base[2] = (r_ambient.value * (1.0f / 64.0f) + ((surf->flags & SURF_LIGHTMAP) ? 0 : 0.5f));
 798                 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 799                 {
 800                         m.numtriangles = mesh->numtriangles;
 801                         m.numverts = mesh->numverts;
 802                         if (R_Mesh_Draw_GetBuffer(&m))
 803                         {
 804                                 cl = m.colorscale;
 805                                 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
 806                                 for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
 807                                 {
 808                                         softwaretransform(v->v, outv);
 809                                         outv[3] = 1;
 810                                         VectorCopy(base, outc);
 811                                         outc[3] = alpha;
 812                                         outst[0] = v->st[0];
 813                                         outst[1] = v->st[1];
 814                                 }
 815                                 if (surf->dlightframe == r_framecount)
 816                                         RSurf_LightSeparate(surf->dlightbits, m.numverts, m.vertex, m.color);
 817                                 for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color;i < m.numverts;i++, v++, outv += 4, outc += 4)
 818                                 {
 819                                         if (surf->flags & SURF_LIGHTMAP)
 820                                         if (surf->styles[0] != 255)
 821                                         {
 822                                                 lm = surf->samples + v->lightmapoffset;
 823                                                 scale = d_lightstylevalue[surf->styles[0]] * (1.0f / 32768.0f);
 824                                                 VectorMA(outc, scale, lm, outc);
 825                                                 if (surf->styles[1] != 255)
 826                                                 {
 827                                                         lm += size3;
 828                                                         scale = d_lightstylevalue[surf->styles[1]] * (1.0f / 32768.0f);
 829                                                         VectorMA(outc, scale, lm, outc);
 830                                                         if (surf->styles[2] != 255)
 831                                                         {
 832                                                                 lm += size3;
 833                                                                 scale = d_lightstylevalue[surf->styles[2]] * (1.0f / 32768.0f);
 834                                                                 VectorMA(outc, scale, lm, outc);
 835                                                                 if (surf->styles[3] != 255)
 836                                                                 {
 837                                                                         lm += size3;
 838                                                                         scale = d_lightstylevalue[surf->styles[3]] * (1.0f / 32768.0f);
 839                                                                         VectorMA(outc, scale, lm, outc);
 840                                                                 }
 841                                                         }
 842                                                 }
 843                                         }
 844                                         if (fogenabled)
 845                                         {
 846                                                 VectorSubtract(outv, r_origin, diff);
 847                                                 f = cl * (1 - exp(fogdensity/DotProduct(diff, diff)));
 848                                                 VectorScale(outc, f, outc);
 849                                         }
 850                                         else
 851                                                 VectorScale(outc, cl, outc);
 852                                 }
 853                         }
 854                 }
 855         }
 856 }
 857
 858 static void RSurfShader_Water_Pass_Fog(msurface_t *surf)
 859 {
 860         int i;
 861         surfvertex_t *v;
 862         float *outv, *outc, *outst, diff[3];
 863         float base[3], f;
 864         surfmesh_t *mesh;
 865         rmeshbufferinfo_t m;
 866         float alpha = currentrenderentity->alpha * (surf->flags & SURF_DRAWNOALPHA ? 1 : r_wateralpha.value);
 867         memset(&m, 0, sizeof(m));
 868         m.transparent = currentrenderentity->effects & EF_ADDITIVE || surf->currenttexture->fogtexture != NULL || alpha < 1;
 869         m.blendfunc1 = GL_SRC_ALPHA;
 870         m.blendfunc2 = GL_ONE;
 871         m.depthwrite = false;
 872         m.depthdisable = false;
 873         m.tex[0] = R_GetTexture(surf->currenttexture->fogtexture);
 874         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 875         {
 876                 m.numtriangles = mesh->numtriangles;
 877                 m.numverts = mesh->numverts;
 878                 if (R_Mesh_Draw_GetBuffer(&m))
 879                 {
 880                         VectorScale(fogcolor, m.colorscale, base);
 881                         memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
 882                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color;i < m.numverts;i++, v++, outv += 4, outc += 4)
 883                         {
 884                                 softwaretransform(v->v, outv);
 885                                 outv[3] = 1;
 886                                 VectorSubtract(outv, r_origin, diff);
 887                                 f = exp(fogdensity/DotProduct(diff, diff));
 888                                 VectorScale(base, f, outc);
 889                                 outc[3] = alpha;
 890                         }
 891                         if (m.tex[0])
 892                         {
 893                                 for (i = 0, v = mesh->vertex, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outst += 2)
 894                                 {
 895                                         outst[0] = v->st[0];
 896                                         outst[1] = v->st[1];
 897                                 }
 898                         }
 899                 }
 900         }
 901 }
 902
 903 static void RSurfShader_Water(msurface_t *firstsurf)
 904 {
 905         msurface_t *surf;
 906         for (surf = firstsurf;surf;surf = surf->chain)
 907                 RSurfShader_Water_Pass_Base(surf);
 908         if (fogenabled)
 909                 for (surf = firstsurf;surf;surf = surf->chain)
 910                         RSurfShader_Water_Pass_Fog(surf);
 911 }
 912
 913 static void RSurfShader_Wall_Pass_BaseMTex(msurface_t *surf)
 914 {
 915         int i;
 916         surfvertex_t *v;
 917         float *outv, *outc, *outst, *outuv, cl, ca, diff[3];
 918         surfmesh_t *mesh;
 919         rmeshbufferinfo_t m;
 920         memset(&m, 0, sizeof(m));
 921         if (currentrenderentity->effects & EF_ADDITIVE)
 922         {
 923                 m.transparent = true;
 924                 m.blendfunc1 = GL_SRC_ALPHA;
 925                 m.blendfunc2 = GL_ONE;
 926         }
 927         else if (surf->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1)
 928         {
 929                 m.transparent = true;
 930                 m.blendfunc1 = GL_SRC_ALPHA;
 931                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 932         }
 933         else
 934         {
 935                 m.transparent = false;
 936                 m.blendfunc1 = GL_ONE;
 937                 m.blendfunc2 = GL_ZERO;
 938         }
 939         m.depthwrite = false;
 940         m.depthdisable = false;
 941         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
 942         m.tex[1] = R_GetTexture(surf->lightmaptexture);
 943         ca = currentrenderentity->alpha;
 944         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
 945         {
 946                 m.numtriangles = mesh->numtriangles;
 947                 m.numverts = mesh->numverts;
 948
 949                 if (R_Mesh_Draw_GetBuffer(&m))
 950                 {
 951                         cl = (float) (1 << lightscalebit) * m.colorscale;
 952                         memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
 953                         if (fogenabled)
 954                         {
 955                                 if (softwaretransform_complexity)
 956                                 {
 957                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0], outuv = m.texcoords[1];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2, outuv += 2)
 958                                         {
 959                                                 softwaretransform(v->v, outv);
 960                                                 outv[3] = 1;
 961                                                 VectorSubtract(outv, r_origin, diff);
 962                                                 outc[0] = outc[1] = outc[2] = cl * (1 - exp(fogdensity/DotProduct(diff, diff)));
 963                                                 outc[3] = ca;
 964                                                 outst[0] = v->st[0];
 965                                                 outst[1] = v->st[1];
 966                                                 outuv[0] = v->uv[0];
 967                                                 outuv[1] = v->uv[1];
 968                                         }
 969                                 }
 970                                 else
 971                                 {
 972                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0], outuv = m.texcoords[1];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2, outuv += 2)
 973                                         {
 974                                                 VectorCopy(v->v, outv);
 975                                                 outv[3] = 1;
 976                                                 VectorSubtract(outv, r_origin, diff);
 977                                                 outc[0] = outc[1] = outc[2] = cl * (1 - exp(fogdensity/DotProduct(diff, diff)));
 978                                                 outc[3] = ca;
 979                                                 outst[0] = v->st[0];
 980                                                 outst[1] = v->st[1];
 981                                                 outuv[0] = v->uv[0];
 982                                                 outuv[1] = v->uv[1];
 983                                         }
 984                                 }
 985                         }
 986                         else
 987                         {
 988                                 if (softwaretransform_complexity)
 989                                 {
 990                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0], outuv = m.texcoords[1];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2, outuv += 2)
 991                                         {
 992                                                 softwaretransform(v->v, outv);
 993                                                 outv[3] = 1;
 994                                                 outc[0] = outc[1] = outc[2] = cl;
 995                                                 outc[3] = ca;
 996                                                 outst[0] = v->st[0];
 997                                                 outst[1] = v->st[1];
 998                                                 outuv[0] = v->uv[0];
 999                                                 outuv[1] = v->uv[1];
1000                                         }
1001                                 }
1002                                 else
1003                                 {
1004                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0], outuv = m.texcoords[1];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2, outuv += 2)
1005                                         {
1006                                                 VectorCopy(v->v, outv);
1007                                                 outv[3] = 1;
1008                                                 outc[0] = outc[1] = outc[2] = cl;
1009                                                 outc[3] = ca;
1010                                                 outst[0] = v->st[0];
1011                                                 outst[1] = v->st[1];
1012                                                 outuv[0] = v->uv[0];
1013                                                 outuv[1] = v->uv[1];
1014                                         }
1015                                 }
1016                         }
1017                 }
1018         }
1019 }
1020
1021 static void RSurfShader_Wall_Pass_BaseTexture(msurface_t *surf)
1022 {
1023         int i;
1024         surfvertex_t *v;
1025         float *outv, *outc, *outst, cl, ca;
1026         surfmesh_t *mesh;
1027         rmeshbufferinfo_t m;
1028         memset(&m, 0, sizeof(m));
1029         m.transparent = false;
1030         m.blendfunc1 = GL_ONE;
1031         m.blendfunc2 = GL_ZERO;
1032         m.depthwrite = false;
1033         m.depthdisable = false;
1034         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1035         ca = currentrenderentity->alpha;
1036         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1037         {
1038                 m.numtriangles = mesh->numtriangles;
1039                 m.numverts = mesh->numverts;
1040
1041                 if (R_Mesh_Draw_GetBuffer(&m))
1042                 {
1043                         cl = (float) (1 << lightscalebit) * m.colorscale;
1044                         memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1045                         if (softwaretransform_complexity)
1046                         {
1047                                 for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1048                                 {
1049                                         softwaretransform(v->v, outv);
1050                                         outv[3] = 1;
1051                                         outc[0] = outc[1] = outc[2] = cl;
1052                                         outc[3] = ca;
1053                                         outst[0] = v->st[0];
1054                                         outst[1] = v->st[1];
1055                                 }
1056                         }
1057                         else
1058                         {
1059                                 for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1060                                 {
1061                                         VectorCopy(v->v, outv);
1062                                         outv[3] = 1;
1063                                         outc[0] = outc[1] = outc[2] = cl;
1064                                         outc[3] = ca;
1065                                         outst[0] = v->st[0];
1066                                         outst[1] = v->st[1];
1067                                 }
1068                         }
1069                 }
1070         }
1071 }
1072
1073 static void RSurfShader_Wall_Pass_BaseLightmap(msurface_t *surf)
1074 {
1075         int i;
1076         surfvertex_t *v;
1077         float *outv, *outc, *outuv, cl, ca, diff[3];
1078         surfmesh_t *mesh;
1079         rmeshbufferinfo_t m;
1080         memset(&m, 0, sizeof(m));
1081         m.transparent = false;
1082         m.blendfunc1 = GL_ZERO;
1083         m.blendfunc2 = GL_SRC_COLOR;
1084         m.depthwrite = false;
1085         m.depthdisable = false;
1086         m.tex[0] = R_GetTexture(surf->lightmaptexture);
1087         ca = currentrenderentity->alpha;
1088         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1089         {
1090                 m.numtriangles = mesh->numtriangles;
1091                 m.numverts = mesh->numverts;
1092
1093                 if (R_Mesh_Draw_GetBuffer(&m))
1094                 {
1095                         cl = (float) (1 << lightscalebit) * m.colorscale;
1096                         memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1097                         if (fogenabled)
1098                         {
1099                                 if (softwaretransform_complexity)
1100                                 {
1101                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outuv = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outuv += 2)
1102                                         {
1103                                                 softwaretransform(v->v, outv);
1104                                                 outv[3] = 1;
1105                                                 VectorSubtract(outv, r_origin, diff);
1106                                                 outc[0] = outc[1] = outc[2] = cl * (1 - exp(fogdensity/DotProduct(diff, diff)));
1107                                                 outc[3] = ca;
1108                                                 outuv[0] = v->uv[0];
1109                                                 outuv[1] = v->uv[1];
1110                                         }
1111                                 }
1112                                 else
1113                                 {
1114                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outuv = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outuv += 2)
1115                                         {
1116                                                 VectorCopy(v->v, outv);
1117                                                 outv[3] = 1;
1118                                                 VectorSubtract(outv, r_origin, diff);
1119                                                 outc[0] = outc[1] = outc[2] = cl * (1 - exp(fogdensity/DotProduct(diff, diff)));
1120                                                 outc[3] = ca;
1121                                                 outuv[0] = v->uv[0];
1122                                                 outuv[1] = v->uv[1];
1123                                         }
1124                                 }
1125                         }
1126                         else
1127                         {
1128                                 if (softwaretransform_complexity)
1129                                 {
1130                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outuv = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outuv += 2)
1131                                         {
1132                                                 softwaretransform(v->v, outv);
1133                                                 outv[3] = 1;
1134                                                 outc[0] = outc[1] = outc[2] = cl;
1135                                                 outc[3] = ca;
1136                                                 outuv[0] = v->uv[0];
1137                                                 outuv[1] = v->uv[1];
1138                                         }
1139                                 }
1140                                 else
1141                                 {
1142                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outuv = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outuv += 2)
1143                                         {
1144                                                 VectorCopy(v->v, outv);
1145                                                 outv[3] = 1;
1146                                                 outc[0] = outc[1] = outc[2] = cl;
1147                                                 outc[3] = ca;
1148                                                 outuv[0] = v->uv[0];
1149                                                 outuv[1] = v->uv[1];
1150                                         }
1151                                 }
1152                         }
1153                 }
1154         }
1155 }
1156
1157 static void RSurfShader_Wall_Pass_BaseVertex(msurface_t *surf)
1158 {
1159         int i, size3;
1160         surfvertex_t *v;
1161         float *outv, *outc, *outst, cl, ca, diff[3];
1162         float base[3], scale, f;
1163         qbyte *lm;
1164         surfmesh_t *mesh;
1165         rmeshbufferinfo_t m;
1166         memset(&m, 0, sizeof(m));
1167         if (currentrenderentity->effects & EF_ADDITIVE)
1168         {
1169                 m.transparent = true;
1170                 m.blendfunc1 = GL_SRC_ALPHA;
1171                 m.blendfunc2 = GL_ONE;
1172         }
1173         else if (surf->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1)
1174         {
1175                 m.transparent = true;
1176                 m.blendfunc1 = GL_SRC_ALPHA;
1177                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1178         }
1179         else
1180         {
1181                 m.transparent = false;
1182                 m.blendfunc1 = GL_ONE;
1183                 m.blendfunc2 = GL_ZERO;
1184         }
1185         m.depthwrite = false;
1186         m.depthdisable = false;
1187         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1188
1189         size3 = ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3;
1190
1191         base[0] = base[1] = base[2] = currentrenderentity->effects & EF_FULLBRIGHT ? 2.0f : r_ambient.value * (1.0f / 64.0f);
1192
1193         ca = currentrenderentity->alpha;
1194         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1195         {
1196                 m.numtriangles = mesh->numtriangles;
1197                 m.numverts = mesh->numverts;
1198
1199                 if (R_Mesh_Draw_GetBuffer(&m))
1200                 {
1201                         cl = m.colorscale;
1202                         memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1203
1204                         if (currentrenderentity->effects & EF_FULLBRIGHT)
1205                         {
1206                                 if (softwaretransform_complexity)
1207                                 {
1208                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1209                                         {
1210                                                 softwaretransform(v->v, outv);
1211                                                 outv[3] = 1;
1212                                                 VectorSubtract(outv, r_origin, diff);
1213                                                 outc[0] = outc[1] = outc[2] = 2.0f * cl * (1 - exp(fogdensity/DotProduct(diff, diff)));
1214                                                 outc[3] = ca;
1215                                                 outst[0] = v->st[0];
1216                                                 outst[1] = v->st[1];
1217                                         }
1218                                 }
1219                                 else
1220                                 {
1221                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1222                                         {
1223                                                 VectorCopy(v->v, outv);
1224                                                 outv[3] = 1;
1225                                                 VectorSubtract(outv, r_origin, diff);
1226                                                 outc[0] = outc[1] = outc[2] = 2.0f * cl * (1 - exp(fogdensity/DotProduct(diff, diff)));
1227                                                 outc[3] = ca;
1228                                                 outst[0] = v->st[0];
1229                                                 outst[1] = v->st[1];
1230                                         }
1231                                 }
1232                         }
1233                         else
1234                         {
1235                                 if (softwaretransform_complexity)
1236                                 {
1237                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1238                                         {
1239                                                 softwaretransform(v->v, outv);
1240                                                 outv[3] = 1;
1241                                                 VectorCopy(base, outc);
1242                                                 outc[3] = ca;
1243                                                 outst[0] = v->st[0];
1244                                                 outst[1] = v->st[1];
1245                                         }
1246                                 }
1247                                 else
1248                                 {
1249                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1250                                         {
1251                                                 VectorCopy(v->v, outv);
1252                                                 outv[3] = 1;
1253                                                 VectorCopy(base, outc);
1254                                                 outc[3] = ca;
1255                                                 outst[0] = v->st[0];
1256                                                 outst[1] = v->st[1];
1257                                         }
1258                                 }
1259
1260                                 if (surf->dlightframe == r_framecount)
1261                                         RSurf_LightSeparate(surf->dlightbits, m.numverts, m.vertex, m.color);
1262
1263                                 for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color;i < m.numverts;i++, v++, outv += 4, outc += 4)
1264                                 {
1265                                         if (surf->styles[0] != 255)
1266                                         {
1267                                                 lm = surf->samples + v->lightmapoffset;
1268                                                 scale = d_lightstylevalue[surf->styles[0]] * (1.0f / 32768.0f);
1269                                                 VectorMA(outc, scale, lm, outc);
1270                                                 if (surf->styles[1] != 255)
1271                                                 {
1272                                                         lm += size3;
1273                                                         scale = d_lightstylevalue[surf->styles[1]] * (1.0f / 32768.0f);
1274                                                         VectorMA(outc, scale, lm, outc);
1275                                                         if (surf->styles[2] != 255)
1276                                                         {
1277                                                                 lm += size3;
1278                                                                 scale = d_lightstylevalue[surf->styles[2]] * (1.0f / 32768.0f);
1279                                                                 VectorMA(outc, scale, lm, outc);
1280                                                                 if (surf->styles[3] != 255)
1281                                                                 {
1282                                                                         lm += size3;
1283                                                                         scale = d_lightstylevalue[surf->styles[3]] * (1.0f / 32768.0f);
1284                                                                         VectorMA(outc, scale, lm, outc);
1285                                                                 }
1286                                                         }
1287                                                 }
1288                                         }
1289                                         if (fogenabled)
1290                                         {
1291                                                 VectorSubtract(outv, r_origin, diff);
1292                                                 f = cl * (1 - exp(fogdensity/DotProduct(diff, diff)));
1293                                                 VectorScale(outc, f, outc);
1294                                         }
1295                                         else
1296                                                 VectorScale(outc, cl, outc);
1297                                 }
1298                         }
1299                 }
1300         }
1301 }
1302
1303 static void RSurfShader_Wall_Pass_BaseFullbright(msurface_t *surf)
1304 {
1305         int i;
1306         surfvertex_t *v;
1307         float *outv, *outc, *outst, cl, ca, diff[3];
1308         surfmesh_t *mesh;
1309         rmeshbufferinfo_t m;
1310         memset(&m, 0, sizeof(m));
1311         if (currentrenderentity->effects & EF_ADDITIVE)
1312         {
1313                 m.transparent = true;
1314                 m.blendfunc1 = GL_SRC_ALPHA;
1315                 m.blendfunc2 = GL_ONE;
1316         }
1317         else if (surf->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1)
1318         {
1319                 m.transparent = true;
1320                 m.blendfunc1 = GL_SRC_ALPHA;
1321                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1322         }
1323         else
1324         {
1325                 m.transparent = false;
1326                 m.blendfunc1 = GL_ONE;
1327                 m.blendfunc2 = GL_ZERO;
1328         }
1329         m.depthwrite = false;
1330         m.depthdisable = false;
1331         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1332         ca = currentrenderentity->alpha;
1333         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1334         {
1335                 m.numtriangles = mesh->numtriangles;
1336                 m.numverts = mesh->numverts;
1337
1338                 if (R_Mesh_Draw_GetBuffer(&m))
1339                 {
1340                         cl = m.colorscale;
1341                         memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1342                         if (fogenabled)
1343                         {
1344                                 if (softwaretransform_complexity)
1345                                 {
1346                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1347                                         {
1348                                                 softwaretransform(v->v, outv);
1349                                                 outv[3] = 1;
1350                                                 VectorSubtract(outv, r_origin, diff);
1351                                                 outc[0] = outc[1] = outc[2] = cl * (1 - exp(fogdensity/DotProduct(diff, diff)));
1352                                                 outc[3] = ca;
1353                                                 outst[0] = v->st[0];
1354                                                 outst[1] = v->st[1];
1355                                         }
1356                                 }
1357                                 else
1358                                 {
1359                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1360                                         {
1361                                                 VectorCopy(v->v, outv);
1362                                                 outv[3] = 1;
1363                                                 VectorSubtract(outv, r_origin, diff);
1364                                                 outc[0] = outc[1] = outc[2] = cl * (1 - exp(fogdensity/DotProduct(diff, diff)));
1365                                                 outc[3] = ca;
1366                                                 outst[0] = v->st[0];
1367                                                 outst[1] = v->st[1];
1368                                         }
1369                                 }
1370                         }
1371                         else
1372                         {
1373                                 if (softwaretransform_complexity)
1374                                 {
1375                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1376                                         {
1377                                                 softwaretransform(v->v, outv);
1378                                                 outv[3] = 1;
1379                                                 outc[0] = outc[1] = outc[2] = cl;
1380                                                 outc[3] = ca;
1381                                                 outst[0] = v->st[0];
1382                                                 outst[1] = v->st[1];
1383                                         }
1384                                 }
1385                                 else
1386                                 {
1387                                         for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1388                                         {
1389                                                 VectorCopy(v->v, outv);
1390                                                 outv[3] = 1;
1391                                                 outc[0] = outc[1] = outc[2] = cl;
1392                                                 outc[3] = ca;
1393                                                 outst[0] = v->st[0];
1394                                                 outst[1] = v->st[1];
1395                                         }
1396                                 }
1397                         }
1398                 }
1399         }
1400 }
1401
1402 static void RSurfShader_Wall_Pass_Light(msurface_t *surf)
1403 {
1404         int i;
1405         surfvertex_t *v;
1406         float *outv, *outc, *outst, cl, ca, diff[3], f;
1407         surfmesh_t *mesh;
1408         rmeshbufferinfo_t m;
1409
1410         if (surf->dlightframe != r_framecount)
1411                 return;
1412         if (currentrenderentity->effects & EF_FULLBRIGHT)
1413                 return;
1414
1415         memset(&m, 0, sizeof(m));
1416         if (currentrenderentity->effects & EF_ADDITIVE)
1417         {
1418                 m.transparent = true;
1419                 m.blendfunc1 = GL_SRC_ALPHA;
1420                 m.blendfunc2 = GL_ONE;
1421         }
1422         else if (surf->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1)
1423         {
1424                 m.transparent = true;
1425                 m.blendfunc1 = GL_SRC_ALPHA;
1426                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1427         }
1428         else
1429         {
1430                 m.transparent = false;
1431                 m.blendfunc1 = GL_ONE;
1432                 m.blendfunc2 = GL_ZERO;
1433         }
1434         m.depthwrite = false;
1435         m.depthdisable = false;
1436         m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1437         ca = currentrenderentity->alpha;
1438         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1439         {
1440                 if (RSurf_LightCheck(surf->dlightbits, mesh))
1441                 {
1442                         m.numtriangles = mesh->numtriangles;
1443                         m.numverts = mesh->numverts;
1444
1445                         if (R_Mesh_Draw_GetBuffer(&m))
1446                         {
1447                                 cl = m.colorscale;
1448                                 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1449                                 for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1450                                 {
1451                                         softwaretransform(v->v, outv);
1452                                         outv[3] = 1;
1453                                         VectorClear(outc);
1454                                         outc[3] = ca;
1455                                         outst[0] = v->st[0];
1456                                         outst[1] = v->st[1];
1457                                 }
1458                                 RSurf_LightSeparate(surf->dlightbits, m.numverts, m.vertex, m.color);
1459                                 if (fogenabled)
1460                                 {
1461                                         for (i = 0, outv = m.vertex, outc = m.color;i < m.numverts;i++, outv += 4, outc += 4)
1462                                         {
1463                                                 VectorSubtract(outv, r_origin, diff);
1464                                                 f = cl * (1 - exp(fogdensity/DotProduct(diff, diff)));
1465                                                 VectorScale(outc, f, outc);
1466                                         }
1467                                 }
1468                                 else if (cl != 1)
1469                                         for (i = 0, outc = m.color;i < m.numverts;i++, outc += 4)
1470                                                 VectorScale(outc, cl, outc);
1471                         }
1472                 }
1473         }
1474 }
1475
1476 static void RSurfShader_Wall_Pass_Glow(msurface_t *surf)
1477 {
1478         int i;
1479         surfvertex_t *v;
1480         float *outv, *outc, *outst, cl, ca, diff[3];
1481         surfmesh_t *mesh;
1482         rmeshbufferinfo_t m;
1483         memset(&m, 0, sizeof(m));
1484         m.transparent = currentrenderentity->effects & EF_ADDITIVE || surf->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1;
1485         m.blendfunc1 = GL_SRC_ALPHA;
1486         m.blendfunc2 = GL_ONE;
1487         m.tex[0] = R_GetTexture(surf->currenttexture->glowtexture);
1488         ca = currentrenderentity->alpha;
1489         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1490         {
1491                 m.numtriangles = mesh->numtriangles;
1492                 m.numverts = mesh->numverts;
1493
1494                 if (R_Mesh_Draw_GetBuffer(&m))
1495                 {
1496                         cl = m.colorscale;
1497                         memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1498                         if (fogenabled)
1499                         {
1500                                 for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1501                                 {
1502                                         softwaretransform(v->v, outv);
1503                                         outv[3] = 1;
1504                                         VectorSubtract(outv, r_origin, diff);
1505                                         outc[0] = outc[1] = outc[2] = cl * (1 - exp(fogdensity/DotProduct(diff, diff)));
1506                                         outc[3] = ca;
1507                                         outst[0] = v->st[0];
1508                                         outst[1] = v->st[1];
1509                                 }
1510                         }
1511                         else
1512                         {
1513                                 for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1514                                 {
1515                                         softwaretransform(v->v, outv);
1516                                         outv[3] = 1;
1517                                         outc[0] = outc[1] = outc[2] = cl;
1518                                         outc[3] = ca;
1519                                         outst[0] = v->st[0];
1520                                         outst[1] = v->st[1];
1521                                 }
1522                         }
1523                 }
1524         }
1525 }
1526
1527 static void RSurfShader_Wall_Pass_Fog(msurface_t *surf)
1528 {
1529         int i;
1530         surfvertex_t *v;
1531         float *outv, *outc, *outst, cl, ca, diff[3], f;
1532         surfmesh_t *mesh;
1533         rmeshbufferinfo_t m;
1534         memset(&m, 0, sizeof(m));
1535         m.transparent = currentrenderentity->effects & EF_ADDITIVE || surf->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1;
1536         m.blendfunc1 = GL_SRC_ALPHA;
1537         m.blendfunc2 = GL_ONE;
1538         ca = currentrenderentity->alpha;
1539         for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1540         {
1541                 m.numtriangles = mesh->numtriangles;
1542                 m.numverts = mesh->numverts;
1543
1544                 if (R_Mesh_Draw_GetBuffer(&m))
1545                 {
1546                         cl = m.colorscale;
1547                         memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1548                         if (softwaretransform_complexity)
1549                         {
1550                                 for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1551                                 {
1552                                         softwaretransform(v->v, outv);
1553                                         outv[3] = 1;
1554                                         VectorSubtract(outv, r_origin, diff);
1555                                         f = cl * exp(fogdensity/DotProduct(diff, diff));
1556                                         VectorScale(fogcolor, f, outc);
1557                                         outc[3] = ca;
1558                                         outst[0] = v->st[0];
1559                                         outst[1] = v->st[1];
1560                                 }
1561                         }
1562                         else
1563                         {
1564                                 for (i = 0, v = mesh->vertex, outv = m.vertex, outc = m.color, outst = m.texcoords[0];i < m.numverts;i++, v++, outv += 4, outc += 4, outst += 2)
1565                                 {
1566                                         VectorCopy(v->v, outv);
1567                                         outv[3] = 1;
1568                                         VectorSubtract(outv, r_origin, diff);
1569                                         VectorSubtract(outv, r_origin, diff);
1570                                         f = cl * exp(fogdensity/DotProduct(diff, diff));
1571                                         VectorScale(fogcolor, f, outc);
1572                                         outc[3] = ca;
1573                                         outst[0] = v->st[0];
1574                                         outst[1] = v->st[1];
1575                                 }
1576                         }
1577                 }
1578         }
1579 }
1580
1581 static void RSurfShader_Wall_Fullbright(msurface_t *firstsurf)
1582 {
1583         msurface_t *surf;
1584         for (surf = firstsurf;surf;surf = surf->chain)
1585         {
1586                 c_brush_polys++;
1587                 RSurfShader_Wall_Pass_BaseFullbright(surf);
1588         }
1589         for (surf = firstsurf;surf;surf = surf->chain)
1590                 if (surf->currenttexture->glowtexture)
1591                         RSurfShader_Wall_Pass_Glow(surf);
1592         if (fogenabled)
1593                 for (surf = firstsurf;surf;surf = surf->chain)
1594                         RSurfShader_Wall_Pass_Fog(surf);
1595 }
1596
1597 static void RSurfShader_Wall_Vertex(msurface_t *firstsurf)
1598 {
1599         msurface_t *surf;
1600         for (surf = firstsurf;surf;surf = surf->chain)
1601         {
1602                 c_brush_polys++;
1603                 RSurfShader_Wall_Pass_BaseVertex(surf);
1604         }
1605         for (surf = firstsurf;surf;surf = surf->chain)
1606                 if (surf->currenttexture->glowtexture)
1607                         RSurfShader_Wall_Pass_Glow(surf);
1608         if (fogenabled)
1609                 for (surf = firstsurf;surf;surf = surf->chain)
1610                         RSurfShader_Wall_Pass_Fog(surf);
1611 }
1612
1613 static void RSurfShader_Wall_Lightmap(msurface_t *firstsurf)
1614 {
1615         msurface_t *surf;
1616         if (r_vertexsurfaces.integer)
1617         {
1618                 for (surf = firstsurf;surf;surf = surf->chain)
1619                 {
1620                         c_brush_polys++;
1621                         RSurfShader_Wall_Pass_BaseVertex(surf);
1622                 }
1623                 for (surf = firstsurf;surf;surf = surf->chain)
1624                         if (surf->currenttexture->glowtexture)
1625                                 RSurfShader_Wall_Pass_Glow(surf);
1626                 if (fogenabled)
1627                         for (surf = firstsurf;surf;surf = surf->chain)
1628                                 RSurfShader_Wall_Pass_Fog(surf);
1629         }
1630         else if (r_multitexture.integer)
1631         {
1632                 if (r_dlightmap.integer)
1633                 {
1634                         for (surf = firstsurf;surf;surf = surf->chain)
1635                         {
1636                                 c_brush_polys++;
1637                                 RSurfShader_Wall_Pass_BaseMTex(surf);
1638                         }
1639                         for (surf = firstsurf;surf;surf = surf->chain)
1640                                 if (surf->currenttexture->glowtexture)
1641                                         RSurfShader_Wall_Pass_Glow(surf);
1642                         if (fogenabled)
1643                                 for (surf = firstsurf;surf;surf = surf->chain)
1644                                         RSurfShader_Wall_Pass_Fog(surf);
1645                 }
1646                 else
1647                 {
1648                         for (surf = firstsurf;surf;surf = surf->chain)
1649                         {
1650                                 c_brush_polys++;
1651                                 RSurfShader_Wall_Pass_BaseMTex(surf);
1652                         }
1653                         for (surf = firstsurf;surf;surf = surf->chain)
1654                                 if (surf->dlightframe == r_framecount)
1655                                         RSurfShader_Wall_Pass_Light(surf);
1656                         for (surf = firstsurf;surf;surf = surf->chain)
1657                                 if (surf->currenttexture->glowtexture)
1658                                         RSurfShader_Wall_Pass_Glow(surf);
1659                         if (fogenabled)
1660                                 for (surf = firstsurf;surf;surf = surf->chain)
1661                                         RSurfShader_Wall_Pass_Fog(surf);
1662                 }
1663         }
1664         else if (firstsurf->currenttexture->fogtexture != NULL || currentrenderentity->alpha != 1 || currentrenderentity->effects & EF_ADDITIVE)
1665         {
1666                 for (surf = firstsurf;surf;surf = surf->chain)
1667                 {
1668                         c_brush_polys++;
1669                         RSurfShader_Wall_Pass_BaseVertex(surf);
1670                 }
1671                 for (surf = firstsurf;surf;surf = surf->chain)
1672                         if (surf->currenttexture->glowtexture)
1673                                 RSurfShader_Wall_Pass_Glow(surf);
1674                 if (fogenabled)
1675                         for (surf = firstsurf;surf;surf = surf->chain)
1676                                 RSurfShader_Wall_Pass_Fog(surf);
1677         }
1678         else
1679         {
1680                 if (r_dlightmap.integer)
1681                 {
1682                         for (surf = firstsurf;surf;surf = surf->chain)
1683                         {
1684                                 c_brush_polys++;
1685                                 RSurfShader_Wall_Pass_BaseTexture(surf);
1686                         }
1687                         for (surf = firstsurf;surf;surf = surf->chain)
1688                                 RSurfShader_Wall_Pass_BaseLightmap(surf);
1689                         for (surf = firstsurf;surf;surf = surf->chain)
1690                                 if (surf->currenttexture->glowtexture)
1691                                         RSurfShader_Wall_Pass_Glow(surf);
1692                         if (fogenabled)
1693                                 for (surf = firstsurf;surf;surf = surf->chain)
1694                                         RSurfShader_Wall_Pass_Fog(surf);
1695                 }
1696                 else
1697                 {
1698                         for (surf = firstsurf;surf;surf = surf->chain)
1699                         {
1700                                 c_brush_polys++;
1701                                 RSurfShader_Wall_Pass_BaseTexture(surf);
1702                         }
1703                         for (surf = firstsurf;surf;surf = surf->chain)
1704                                 RSurfShader_Wall_Pass_BaseLightmap(surf);
1705                         for (surf = firstsurf;surf;surf = surf->chain)
1706                                 if (surf->dlightframe == r_framecount)
1707                                         RSurfShader_Wall_Pass_Light(surf);
1708                         for (surf = firstsurf;surf;surf = surf->chain)
1709                                 if (surf->currenttexture->glowtexture)
1710                                         RSurfShader_Wall_Pass_Glow(surf);
1711                         if (fogenabled)
1712                                 for (surf = firstsurf;surf;surf = surf->chain)
1713                                         RSurfShader_Wall_Pass_Fog(surf);
1714                 }
1715         }
1716 }
1717
1718 /*
1719 =============================================================
1720
1721         WORLD MODEL
1722
1723 =============================================================
1724 */
1725
1726 static void R_SolidWorldNode (void)
1727 {
1728         if (r_viewleaf->contents != CONTENTS_SOLID)
1729         {
1730                 int portalstack;
1731                 mportal_t *p, *pstack[8192];
1732                 msurface_t *surf, **mark, **endmark;
1733                 mleaf_t *leaf;
1734                 // LordHavoc: portal-passage worldnode; follows portals leading
1735                 // outward from viewleaf, if a portal leads offscreen it is not
1736                 // followed, in indoor maps this can often cull a great deal of
1737                 // geometry away when pvs data is not present (useful with pvs as well)
1738
1739                 leaf = r_viewleaf;
1740                 leaf->worldnodeframe = r_framecount;
1741                 portalstack = 0;
1742         loc0:
1743                 c_leafs++;
1744
1745                 leaf->visframe = r_framecount;
1746
1747                 if (leaf->nummarksurfaces)
1748                 {
1749                         mark = leaf->firstmarksurface;
1750                         endmark = mark + leaf->nummarksurfaces;
1751                         do
1752                         {
1753                                 surf = *mark++;
1754                                 // make sure surfaces are only processed once
1755                                 if (surf->worldnodeframe == r_framecount)
1756                                         continue;
1757                                 surf->worldnodeframe = r_framecount;
1758                                 if (PlaneDist(r_origin, surf->plane) < surf->plane->dist)
1759                                 {
1760                                         if (surf->flags & SURF_PLANEBACK)
1761                                                 surf->visframe = r_framecount;
1762                                 }
1763                                 else
1764                                 {
1765                                         if (!(surf->flags & SURF_PLANEBACK))
1766                                                 surf->visframe = r_framecount;
1767                                 }
1768                         }
1769                         while (mark < endmark);
1770                 }
1771
1772                 // follow portals into other leafs
1773                 p = leaf->portals;
1774                 for (;p;p = p->next)
1775                 {
1776                         if (DotProduct(r_origin, p->plane.normal) < p->plane.dist)
1777                         {
1778                                 leaf = p->past;
1779                                 if (leaf->worldnodeframe != r_framecount)
1780                                 {
1781                                         leaf->worldnodeframe = r_framecount;
1782                                         if (leaf->contents != CONTENTS_SOLID)
1783                                         {
1784                                                 if (R_NotCulledBox(leaf->mins, leaf->maxs))
1785                                                 {
1786                                                         p->visframe = r_framecount;
1787                                                         pstack[portalstack++] = p;
1788                                                         goto loc0;
1789
1790         loc1:
1791                                                         p = pstack[--portalstack];
1792                                                 }
1793                                         }
1794                                 }
1795                         }
1796                 }
1797
1798                 if (portalstack)
1799                         goto loc1;
1800         }
1801         else
1802         {
1803                 mnode_t *nodestack[8192], *node = cl.worldmodel->nodes;
1804                 int nodestackpos = 0;
1805                 // LordHavoc: recursive descending worldnode; if portals are not
1806                 // available, this is a good last resort, can cull large amounts of
1807                 // geometry, but is more time consuming than portal-passage and renders
1808                 // things behind walls
1809
1810 loc2:
1811                 if (R_NotCulledBox(node->mins, node->maxs))
1812                 {
1813                         if (node->numsurfaces)
1814                         {
1815                                 msurface_t *surf = cl.worldmodel->surfaces + node->firstsurface, *surfend = surf + node->numsurfaces;
1816                                 if (PlaneDiff (r_origin, node->plane) < 0)
1817                                 {
1818                                         for (;surf < surfend;surf++)
1819                                         {
1820                                                 if (surf->flags & SURF_PLANEBACK)
1821                                                         surf->visframe = r_framecount;
1822                                         }
1823                                 }
1824                                 else
1825                                 {
1826                                         for (;surf < surfend;surf++)
1827                                         {
1828                                                 if (!(surf->flags & SURF_PLANEBACK))
1829                                                         surf->visframe = r_framecount;
1830                                         }
1831                                 }
1832                         }
1833
1834                         // recurse down the children
1835                         if (node->children[0]->contents >= 0)
1836                         {
1837                                 if (node->children[1]->contents >= 0)
1838                                 {
1839                                         if (nodestackpos < 8192)
1840                                                 nodestack[nodestackpos++] = node->children[1];
1841                                         node = node->children[0];
1842                                         goto loc2;
1843                                 }
1844                                 else
1845                                         ((mleaf_t *)node->children[1])->visframe = r_framecount;
1846                                 node = node->children[0];
1847                                 goto loc2;
1848                         }
1849                         else
1850                         {
1851                                 ((mleaf_t *)node->children[0])->visframe = r_framecount;
1852                                 if (node->children[1]->contents >= 0)
1853                                 {
1854                                         node = node->children[1];
1855                                         goto loc2;
1856                                 }
1857                                 else if (nodestackpos > 0)
1858                                 {
1859                                         ((mleaf_t *)node->children[1])->visframe = r_framecount;
1860                                         node = nodestack[--nodestackpos];
1861                                         goto loc2;
1862                                 }
1863                         }
1864                 }
1865                 else if (nodestackpos > 0)
1866                 {
1867                         node = nodestack[--nodestackpos];
1868                         goto loc2;
1869                 }
1870         }
1871 }
1872
1873 static int r_portalframecount = 0;
1874
1875 static void R_PVSWorldNode()
1876 {
1877         int portalstack, i;
1878         mportal_t *p, *pstack[8192];
1879         msurface_t *surf, **mark, **endmark;
1880         mleaf_t *leaf;
1881         qbyte *worldvis;
1882
1883         worldvis = Mod_LeafPVS (r_viewleaf, cl.worldmodel);
1884
1885         leaf = r_viewleaf;
1886         leaf->worldnodeframe = r_framecount;
1887         portalstack = 0;
1888 loc0:
1889         c_leafs++;
1890
1891         leaf->visframe = r_framecount;
1892
1893         if (leaf->nummarksurfaces)
1894         {
1895                 mark = leaf->firstmarksurface;
1896                 endmark = mark + leaf->nummarksurfaces;
1897                 do
1898                 {
1899                         surf = *mark++;
1900                         // make sure surfaces are only processed once
1901                         if (surf->worldnodeframe == r_framecount)
1902                                 continue;
1903                         surf->worldnodeframe = r_framecount;
1904                         if (PlaneDist(r_origin, surf->plane) < surf->plane->dist)
1905                         {
1906                                 if (surf->flags & SURF_PLANEBACK)
1907                                         surf->visframe = r_framecount;
1908                         }
1909                         else
1910                         {
1911                                 if (!(surf->flags & SURF_PLANEBACK))
1912                                         surf->visframe = r_framecount;
1913                         }
1914                 }
1915                 while (mark < endmark);
1916         }
1917
1918         // follow portals into other leafs
1919         for (p = leaf->portals;p;p = p->next)
1920         {
1921                 if (DotProduct(r_origin, p->plane.normal) < p->plane.dist)
1922                 {
1923                         leaf = p->past;
1924                         if (leaf->worldnodeframe != r_framecount)
1925                         {
1926                                 leaf->worldnodeframe = r_framecount;
1927                                 if (leaf->contents != CONTENTS_SOLID)
1928                                 {
1929                                         i = (leaf - cl.worldmodel->leafs) - 1;
1930                                         if (worldvis[i>>3] & (1<<(i&7)))
1931                                         {
1932                                                 if (R_NotCulledBox(leaf->mins, leaf->maxs))
1933                                                 {
1934                                                         pstack[portalstack++] = p;
1935                                                         goto loc0;
1936
1937 loc1:
1938                                                         p = pstack[--portalstack];
1939                                                 }
1940                                         }
1941                                 }
1942                         }
1943                 }
1944         }
1945
1946         if (portalstack)
1947                 goto loc1;
1948 }
1949
1950 Cshader_t Cshader_wall_vertex = {{NULL, RSurfShader_Wall_Vertex}, NULL};
1951 Cshader_t Cshader_wall_lightmap = {{NULL, RSurfShader_Wall_Lightmap}, NULL};
1952 Cshader_t Cshader_wall_fullbright = {{NULL, RSurfShader_Wall_Fullbright}, NULL};
1953 Cshader_t Cshader_water = {{NULL, RSurfShader_Water}, NULL};
1954 Cshader_t Cshader_sky = {{RSurfShader_Sky, NULL}, NULL};
1955
1956 int Cshader_count = 5;
1957 Cshader_t *Cshaders[5] =
1958 {
1959         &Cshader_wall_vertex,
1960         &Cshader_wall_lightmap,
1961         &Cshader_wall_fullbright,
1962         &Cshader_water,
1963         &Cshader_sky
1964 };
1965
1966 void R_PrepareSurfaces(void)
1967 {
1968         int i, alttextures, texframe, framecount;
1969         texture_t *t;
1970         model_t *model;
1971         msurface_t *surf;
1972
1973         for (i = 0;i < Cshader_count;i++)
1974                 Cshaders[i]->chain = NULL;
1975
1976         model = currentrenderentity->model;
1977         alttextures = currentrenderentity->frame != 0;
1978         texframe = (int)(cl.time * 5.0f);
1979
1980         for (i = 0;i < model->nummodelsurfaces;i++)
1981         {
1982                 surf = model->modelsortedsurfaces[i];
1983                 if (surf->visframe == r_framecount)
1984                 {
1985                         if (surf->insertframe != r_framecount)
1986                         {
1987                                 surf->insertframe = r_framecount;
1988                                 c_faces++;
1989                                 t = surf->texinfo->texture;
1990                                 if (t->animated)
1991                                 {
1992                                         framecount = t->anim_total[alttextures];
1993                                         if (framecount >= 2)
1994                                                 surf->currenttexture = t->anim_frames[alttextures][texframe % framecount];
1995                                         else
1996                                                 surf->currenttexture = t->anim_frames[alttextures][0];
1997                                 }
1998                                 else
1999                                         surf->currenttexture = t;
2000                         }
2001
2002                         surf->chain = surf->shader->chain;
2003                         surf->shader->chain = surf;
2004                 }
2005         }
2006 }
2007
2008 void R_DrawSurfaces (int type)
2009 {
2010         int                     i;
2011         Cshader_t       *shader;
2012
2013         for (i = 0;i < Cshader_count;i++)
2014         {
2015                 shader = Cshaders[i];
2016                 if (shader->chain && shader->shaderfunc[type])
2017                         shader->shaderfunc[type](shader->chain);
2018         }
2019 }
2020
2021 static float portalpointbuffer[256][3];
2022
2023 void R_DrawPortals(void)
2024 {
2025         int drawportals, i;
2026         mportal_t *portal, *endportal;
2027         mvertex_t *point;
2028         rmeshinfo_t m;
2029         drawportals = r_drawportals.integer;
2030
2031         if (drawportals < 1)
2032                 return;
2033
2034         memset(&m, 0, sizeof(m));
2035         m.transparent = true;
2036         m.blendfunc1 = GL_SRC_ALPHA;
2037         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
2038         m.vertex = &portalpointbuffer[0][0];
2039         m.vertexstep = sizeof(float[3]);
2040         m.ca = 0.125;
2041         for (portal = cl.worldmodel->portals, endportal = portal + cl.worldmodel->numportals;portal < endportal;portal++)
2042         {
2043                 if (portal->visframe == r_portalframecount)
2044                 {
2045                         if (portal->numpoints <= 256)
2046                         {
2047                                 i = portal - cl.worldmodel->portals;
2048                                 m.cr = ((i & 0x0007) >> 0) * (1.0f / 7.0f);
2049                                 m.cg = ((i & 0x0038) >> 3) * (1.0f / 7.0f);
2050                                 m.cb = ((i & 0x01C0) >> 6) * (1.0f / 7.0f);
2051                                 point = portal->points;
2052                                 if (PlaneDiff(r_origin, (&portal->plane)) > 0)
2053                                 {
2054                                         for (i = portal->numpoints - 1;i >= 0;i--)
2055                                                 VectorCopy(point[i].position, portalpointbuffer[i]);
2056                                 }
2057                                 else
2058                                 {
2059                                         for (i = 0;i < portal->numpoints;i++)
2060                                                 VectorCopy(point[i].position, portalpointbuffer[i]);
2061                                 }
2062                                 R_Mesh_DrawPolygon(&m, portal->numpoints);
2063                         }
2064                 }
2065         }
2066 }
2067
2068 void R_SetupForBModelRendering(void)
2069 {
2070         int                     i;
2071         msurface_t      *surf;
2072         model_t         *model;
2073         vec3_t          modelorg;
2074
2075         // because bmodels can be reused, we have to decide which things to render
2076         // from scratch every time
2077
2078         model = currentrenderentity->model;
2079
2080         softwaretransformforentity (currentrenderentity);
2081         softwareuntransform(r_origin, modelorg);
2082
2083         for (i = 0;i < model->nummodelsurfaces;i++)
2084         {
2085                 surf = model->modelsortedsurfaces[i];
2086                 if (((surf->flags & SURF_PLANEBACK) == 0) == (PlaneDiff(modelorg, surf->plane) >= 0))
2087                         surf->visframe = r_framecount;
2088                 else
2089                         surf->visframe = -1;
2090                 surf->worldnodeframe = -1;
2091                 surf->lightframe = -1;
2092                 surf->dlightframe = -1;
2093                 surf->insertframe = -1;
2094         }
2095 }
2096
2097 void R_SetupForWorldRendering(void)
2098 {
2099         // there is only one instance of the world, but it can be rendered in
2100         // multiple stages
2101
2102         currentrenderentity = &cl_entities[0].render;
2103         softwaretransformidentity();
2104 }
2105
2106 static void R_SurfMarkLights (void)
2107 {
2108         int                     i;
2109         msurface_t      *surf;
2110
2111         if (r_dynamic.integer)
2112                 R_MarkLights();
2113
2114         if (!r_vertexsurfaces.integer)
2115         {
2116                 for (i = 0;i < currentrenderentity->model->nummodelsurfaces;i++)
2117                 {
2118                         surf = currentrenderentity->model->modelsortedsurfaces[i];
2119                         if (surf->visframe == r_framecount && surf->lightmaptexture != NULL)
2120                         {
2121                                 if (surf->cached_dlight
2122                                  || surf->cached_ambient != r_ambient.value
2123                                  || surf->cached_lightscalebit != lightscalebit)
2124                                         R_BuildLightMap(surf, false); // base lighting changed
2125                                 else if (r_dynamic.integer)
2126                                 {
2127                                         if  (surf->styles[0] != 255 && (d_lightstylevalue[surf->styles[0]] != surf->cached_light[0]
2128                                          || (surf->styles[1] != 255 && (d_lightstylevalue[surf->styles[1]] != surf->cached_light[1]
2129                                          || (surf->styles[2] != 255 && (d_lightstylevalue[surf->styles[2]] != surf->cached_light[2]
2130                                          || (surf->styles[3] != 255 && (d_lightstylevalue[surf->styles[3]] != surf->cached_light[3]))))))))
2131                                                 R_BuildLightMap(surf, false); // base lighting changed
2132                                         else if (surf->dlightframe == r_framecount && r_dlightmap.integer)
2133                                                 R_BuildLightMap(surf, true); // only dlights
2134                                 }
2135                         }
2136                 }
2137         }
2138 }
2139
2140 void R_MarkWorldLights(void)
2141 {
2142         R_SetupForWorldRendering();
2143         R_SurfMarkLights();
2144 }
2145
2146 /*
2147 =============
2148 R_DrawWorld
2149 =============
2150 */
2151 void R_DrawWorld (void)
2152 {
2153         R_SetupForWorldRendering();
2154
2155         if (r_viewleaf->contents == CONTENTS_SOLID || r_novis.integer || r_viewleaf->compressed_vis == NULL)
2156                 R_SolidWorldNode ();
2157         else
2158                 R_PVSWorldNode ();
2159 }
2160
2161 /*
2162 =================
2163 R_DrawBrushModel
2164 =================
2165 */
2166 void R_DrawBrushModelSky (void)
2167 {
2168         R_SetupForBModelRendering();
2169
2170         R_PrepareSurfaces();
2171         R_DrawSurfaces(SHADERSTAGE_SKY);
2172 }
2173
2174 void R_DrawBrushModelNormal (void)
2175 {
2176         c_bmodels++;
2177
2178         // have to flush queue because of possible lightmap reuse
2179         R_Mesh_Render();
2180
2181         R_SetupForBModelRendering();
2182
2183         R_SurfMarkLights();
2184
2185         R_PrepareSurfaces();
2186
2187         if (!skyrendermasked)
2188                 R_DrawSurfaces(SHADERSTAGE_SKY);
2189         R_DrawSurfaces(SHADERSTAGE_NORMAL);
2190 }
2191
2192 static void gl_surf_start(void)
2193 {
2194 }
2195
2196 static void gl_surf_shutdown(void)
2197 {
2198 }
2199
2200 static void gl_surf_newmap(void)
2201 {
2202 }
2203
2204 void GL_Surf_Init(void)
2205 {
2206         int i;
2207         dlightdivtable[0] = 4194304;
2208         for (i = 1;i < 32768;i++)
2209                 dlightdivtable[i] = 4194304 / (i << 7);
2210
2211         Cvar_RegisterVariable(&r_ambient);
2212         Cvar_RegisterVariable(&r_vertexsurfaces);
2213         Cvar_RegisterVariable(&r_dlightmap);
2214         Cvar_RegisterVariable(&r_drawportals);
2215         Cvar_RegisterVariable(&r_testvis);
2216         Cvar_RegisterVariable(&r_floatbuildlightmap);
2217
2218         R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
2219 }
2220