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 extern int                     skytexturenum;
  25
  26 int             lightmap_textures;
  27
  28 signed blocklights[18*18*3]; // LordHavoc: *3 for colored lighting
  29
  30 // LordHavoc: skinny but tall lightmaps for quicker subimage uploads
  31 #define BLOCK_WIDTH             128
  32 #define BLOCK_HEIGHT    128
  33 // LordHavoc: increased lightmap limit from 64 to 1024
  34 #define MAX_LIGHTMAPS   1024
  35 #define LIGHTMAPSIZE    (BLOCK_WIDTH*BLOCK_HEIGHT*3)
  36
  37 int                     active_lightmaps;
  38
  39 short allocated[MAX_LIGHTMAPS][BLOCK_WIDTH];
  40
  41 byte *lightmaps[MAX_LIGHTMAPS];
  42 short lightmapupdate[MAX_LIGHTMAPS][2];
  43
  44 int lightmapalign, lightmapalignmask; // LordHavoc: NVIDIA's broken subimage fix, see BuildLightmaps for notes
  45 cvar_t gl_lightmapalign = {"gl_lightmapalign", "4"};
  46 cvar_t gl_lightmaprgba = {"gl_lightmaprgba", "1"};
  47 cvar_t gl_nosubimagefragments = {"gl_nosubimagefragments", "0"};
  48 cvar_t gl_nosubimage = {"gl_nosubimage", "0"};
  49
  50 qboolean lightmaprgba, nosubimagefragments, nosubimage;
  51 int lightmapbytes;
  52
  53 qboolean skyisvisible;
  54 extern qboolean gl_arrays;
  55
  56 void glrsurf_init()
  57 {
  58         int i;
  59         for (i = 0;i < MAX_LIGHTMAPS;i++)
  60                 lightmaps[i] = NULL;
  61         Cvar_RegisterVariable(&gl_lightmapalign);
  62         Cvar_RegisterVariable(&gl_lightmaprgba);
  63         Cvar_RegisterVariable(&gl_nosubimagefragments);
  64         Cvar_RegisterVariable(&gl_nosubimage);
  65         // check if it's the glquake minigl driver
  66         if (strncasecmp(gl_vendor,"3Dfx",4)==0)
  67         if (!gl_arrays)
  68         {
  69                 Cvar_SetValue("gl_nosubimagefragments", 1);
  70 //              Cvar_SetValue("gl_nosubimage", 1);
  71                 Cvar_SetValue("gl_lightmode", 0);
  72         }
  73 }
  74
  75 int dlightdivtable[8192];
  76 int dlightdivtableinitialized = 0;
  77
  78 /*
  79 ===============
  80 R_AddDynamicLights
  81 ===============
  82 */
  83 void R_AddDynamicLights (msurface_t *surf)
  84 {
  85         int                     sdtable[18], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, red, green, blue, j;
  86         unsigned        *bl;
  87         float           dist, f;
  88         vec3_t          impact, local;
  89         // use 64bit integer...  shame it's not very standardized...
  90 #if _MSC_VER || __BORLANDC__
  91         __int64         k; // MSVC
  92 #else
  93         long long       k; // GCC
  94 #endif
  95
  96         if (!dlightdivtableinitialized)
  97         {
  98                 dlightdivtable[0] = 1048576 >> 7;
  99                 for (s = 1;s < 8192;s++)
 100                         dlightdivtable[s] = 1048576 / (s << 7);
 101                 dlightdivtableinitialized = 1;
 102         }
 103
 104         smax = (surf->extents[0]>>4)+1;
 105         tmax = (surf->extents[1]>>4)+1;
 106
 107         for (lnum=0 ; lnum<MAX_DLIGHTS ; lnum++)
 108         {
 109                 if ( !(surf->dlightbits[lnum >> 5] & (1<<(lnum&31)) ) )
 110                         continue;               // not lit by this light
 111
 112                 VectorSubtract(cl_dlights[lnum].origin, currententity->origin, local);
 113                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
 114                 for (i=0 ; i<3 ; i++)
 115                         impact[i] = cl_dlights[lnum].origin[i] - surf->plane->normal[i]*dist;
 116
 117                 f = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 118                 i = f;
 119
 120                 // reduce calculations
 121                 t = dist*dist;
 122                 for (s = 0;s < smax;s++, i -= 16)
 123                         sdtable[s] = i*i + t;
 124
 125                 f = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 126                 i = f;
 127
 128                 maxdist = (int) (cl_dlights[lnum].radius*cl_dlights[lnum].radius); // for comparisons to minimum acceptable light
 129                 // clamp radius to avoid exceeding 8192 entry division table
 130                 if (maxdist > 1048576)
 131                         maxdist = 1048576;
 132                 maxdist3 = maxdist - (int) (dist*dist);
 133                 // convert to 8.8 blocklights format
 134                 if (!cl_dlights[lnum].dark)
 135                 {
 136                         f = cl_dlights[lnum].color[0] * maxdist;red = f;
 137                         f = cl_dlights[lnum].color[1] * maxdist;green = f;
 138                         f = cl_dlights[lnum].color[2] * maxdist;blue = f;
 139                 }
 140                 else // negate for darklight
 141                 {
 142                         f = cl_dlights[lnum].color[0] * -maxdist;red = f;
 143                         f = cl_dlights[lnum].color[1] * -maxdist;green = f;
 144                         f = cl_dlights[lnum].color[2] * -maxdist;blue = f;
 145                 }
 146                 bl = blocklights;
 147                 for (t = 0;t < tmax;t++,i -= 16)
 148                 {
 149                         td = i*i;
 150                         if (td < maxdist3) // make sure some part of it is visible on this line
 151                         {
 152                                 maxdist2 = maxdist - td;
 153                                 for (s = 0;s < smax;s++)
 154                                 {
 155                                         if (sdtable[s] < maxdist2)
 156                                         {
 157                                                 j = dlightdivtable[(sdtable[s]+td) >> 7];
 158                                                 k = (red   * j) >> 8;bl[0] += k;
 159                                                 k = (green * j) >> 8;bl[1] += k;
 160                                                 k = (blue  * j) >> 8;bl[2] += k;
 161                                         }
 162                                         bl += 3;
 163                                 }
 164                         }
 165                         else
 166                                 bl+=smax*3; // skip line
 167                 }
 168         }
 169 }
 170
 171 extern qboolean lighthalf;
 172 /*
 173 ===============
 174 R_BuildLightMap
 175
 176 Combine and scale multiple lightmaps into the 8.8 format in blocklights
 177 ===============
 178 */
 179 void R_BuildLightMap (msurface_t *surf, byte *dest, int stride)
 180 {
 181         int                     smax, tmax;
 182         int                     t;
 183         int                     i, j, size;
 184         byte            *lightmap;
 185         int                     scale;
 186         int                     maps;
 187         int                     *bl;
 188
 189         surf->cached_dlight = (surf->dlightframe == r_framecount);
 190         surf->cached_lighthalf = lighthalf;
 191
 192         smax = (surf->extents[0]>>4)+1;
 193         tmax = (surf->extents[1]>>4)+1;
 194         size = smax*tmax;
 195         lightmap = surf->samples;
 196
 197 // set to full bright if no light data
 198         if (currententity->effects & EF_FULLBRIGHT || !cl.worldmodel->lightdata)
 199         {
 200                 bl = blocklights;
 201                 for (i=0 ; i<size ; i++)
 202                 {
 203                         *bl++ = 255*256;
 204                         *bl++ = 255*256;
 205                         *bl++ = 255*256;
 206                 }
 207         }
 208         else
 209         {
 210 // clear to no light
 211                 bl = blocklights;
 212                 for (i=0 ; i<size ; i++)
 213                 {
 214                         *bl++ = 0;
 215                         *bl++ = 0;
 216                         *bl++ = 0;
 217                 }
 218
 219 // add all the lightmaps
 220                 if (lightmap)
 221                         for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++)
 222                         {
 223                                 scale = d_lightstylevalue[surf->styles[maps]];
 224                                 surf->cached_light[maps] = scale;       // 8.8 fraction
 225                                 bl = blocklights;
 226                                 for (i=0 ; i<size ; i++)
 227                                 {
 228                                         *bl++ += *lightmap++ * scale;
 229                                         *bl++ += *lightmap++ * scale;
 230                                         *bl++ += *lightmap++ * scale;
 231                                 }
 232                         }
 233
 234 // add all the dynamic lights
 235                 if (surf->dlightframe == r_framecount)
 236                         R_AddDynamicLights (surf);
 237         }
 238         stride -= (smax*lightmapbytes);
 239         bl = blocklights;
 240         if (lighthalf)
 241         {
 242                 // LordHavoc: I shift down by 8 unlike GLQuake's 7,
 243                 // the image is brightened as a processing pass
 244                 if (lightmaprgba)
 245                 {
 246                         for (i=0 ; i<tmax ; i++, dest += stride)
 247                         {
 248                                 for (j=0 ; j<smax ; j++)
 249                                 {
 250                                         t = *bl++ >> 8;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 251                                         t = *bl++ >> 8;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 252                                         t = *bl++ >> 8;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 253                                         *dest++ = 255;
 254                                 }
 255                         }
 256                 }
 257                 else
 258                 {
 259                         for (i=0 ; i<tmax ; i++, dest += stride)
 260                         {
 261                                 for (j=0 ; j<smax ; j++)
 262                                 {
 263                                         t = *bl++ >> 8;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 264                                         t = *bl++ >> 8;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 265                                         t = *bl++ >> 8;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 266                                 }
 267                         }
 268                 }
 269         }
 270         else
 271         {
 272                 if (lightmaprgba)
 273                 {
 274                         for (i=0 ; i<tmax ; i++, dest += stride)
 275                         {
 276                                 for (j=0 ; j<smax ; j++)
 277                                 {
 278                                         t = *bl++ >> 7;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 279                                         t = *bl++ >> 7;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 280                                         t = *bl++ >> 7;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 281                                         *dest++ = 255;
 282                                 }
 283                         }
 284                 }
 285                 else
 286                 {
 287                         for (i=0 ; i<tmax ; i++, dest += stride)
 288                         {
 289                                 for (j=0 ; j<smax ; j++)
 290                                 {
 291                                         t = *bl++ >> 7;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 292                                         t = *bl++ >> 7;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 293                                         t = *bl++ >> 7;if (t > 255) t = 255;else if (t < 0) t = 0;*dest++ = t;
 294                                 }
 295                         }
 296                 }
 297         }
 298 }
 299
 300 byte templight[32*32*4];
 301
 302 void R_UpdateLightmap(msurface_t *s, int lnum)
 303 {
 304         int smax, tmax;
 305         // upload the new lightmap texture fragment
 306         glBindTexture(GL_TEXTURE_2D, lightmap_textures + lnum);
 307         if (nosubimage || nosubimagefragments)
 308         {
 309                 if (lightmapupdate[lnum][0] > s->light_t)
 310                         lightmapupdate[lnum][0] = s->light_t;
 311                 if (lightmapupdate[lnum][1] < (s->light_t + ((s->extents[1]>>4)+1)))
 312                         lightmapupdate[lnum][1] = (s->light_t + ((s->extents[1]>>4)+1));
 313                 if (lightmaprgba)
 314                         R_BuildLightMap (s, lightmaps[s->lightmaptexturenum] + (s->light_t * BLOCK_WIDTH + s->light_s) * 4, BLOCK_WIDTH * 4);
 315                 else
 316                         R_BuildLightMap (s, lightmaps[s->lightmaptexturenum] + (s->light_t * BLOCK_WIDTH + s->light_s) * 3, BLOCK_WIDTH * 3);
 317         }
 318         else
 319         {
 320                 smax = ((s->extents[0]>>4)+lightmapalign) & lightmapalignmask;
 321                 tmax = (s->extents[1]>>4)+1;
 322                 if (lightmaprgba)
 323                 {
 324                         R_BuildLightMap (s, templight, smax * 4);
 325                         glTexSubImage2D(GL_TEXTURE_2D, 0, s->light_s, s->light_t, smax, tmax, GL_RGBA, GL_UNSIGNED_BYTE, templight);
 326                 }
 327                 else
 328                 {
 329                         R_BuildLightMap (s, templight, smax * 3);
 330                         glTexSubImage2D(GL_TEXTURE_2D, 0, s->light_s, s->light_t, smax, tmax, GL_RGB , GL_UNSIGNED_BYTE, templight);
 331                 }
 332         }
 333 }
 334
 335
 336 /*
 337 ===============
 338 R_TextureAnimation
 339
 340 Returns the proper texture for a given time and base texture
 341 ===============
 342 */
 343 texture_t *R_TextureAnimation (texture_t *base)
 344 {
 345         texture_t *original;
 346         int             relative;
 347         int             count;
 348
 349         if (currententity->frame)
 350         {
 351                 if (base->alternate_anims)
 352                         base = base->alternate_anims;
 353         }
 354
 355         if (!base->anim_total)
 356                 return base;
 357
 358         original = base;
 359
 360         relative = (int)(cl.time*10) % base->anim_total;
 361
 362         count = 0;
 363         while (base->anim_min > relative || base->anim_max <= relative)
 364         {
 365                 base = base->anim_next;
 366                 if (!base)
 367                 {
 368                         Con_Printf("R_TextureAnimation: broken cycle");
 369                         return original;
 370                 }
 371                 if (++count > 100)
 372                 {
 373                         Con_Printf("R_TextureAnimation: infinite cycle");
 374                         return original;
 375                 }
 376         }
 377
 378         return base;
 379 }
 380
 381
 382 /*
 383 =============================================================
 384
 385         BRUSH MODELS
 386
 387 =============================================================
 388 */
 389
 390
 391 extern  int             solidskytexture;
 392 extern  int             alphaskytexture;
 393 extern  float   speedscale;             // for top sky and bottom sky
 394
 395 qboolean mtexenabled = false;
 396
 397 extern char skyname[];
 398
 399 void R_DynamicLightPoint(vec3_t color, vec3_t org, int *dlightbits);
 400 //extern cvar_t r_dynamicwater;
 401 extern int r_dlightframecount;
 402 float   turbsin[256] =
 403 {
 404         #include "gl_warp_sin.h"
 405 };
 406 #define TURBSCALE (256.0 / (2 * M_PI))
 407
 408
 409 void UploadLightmaps()
 410 {
 411         int i;
 412         if (nosubimage || nosubimagefragments)
 413         {
 414                 for (i = 0;i < MAX_LIGHTMAPS;i++)
 415                 {
 416                         if (lightmapupdate[i][0] < lightmapupdate[i][1])
 417                         {
 418                                 glBindTexture(GL_TEXTURE_2D, lightmap_textures + i);
 419                                 if (nosubimage)
 420                                 {
 421                                         if (lightmaprgba)
 422                                                 glTexImage2D(GL_TEXTURE_2D, 0, 4, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE, lightmaps[i]);
 423                                         else
 424                                                 glTexImage2D(GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, lightmaps[i]);
 425                                 }
 426                                 else
 427                                 {
 428                                         if (lightmaprgba)
 429                                                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, lightmapupdate[i][0], BLOCK_WIDTH, lightmapupdate[i][1] - lightmapupdate[i][0], GL_RGBA, GL_UNSIGNED_BYTE, lightmaps[i] + (BLOCK_WIDTH * 4 * lightmapupdate[i][0]));
 430                                         else
 431                                                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, lightmapupdate[i][0], BLOCK_WIDTH, lightmapupdate[i][1] - lightmapupdate[i][0], GL_RGB, GL_UNSIGNED_BYTE, lightmaps[i] + (BLOCK_WIDTH * 3 * lightmapupdate[i][0]));
 432                                 }
 433                         }
 434                         lightmapupdate[i][0] = BLOCK_HEIGHT;
 435                         lightmapupdate[i][1] = 0;
 436                 }
 437         }
 438 }
 439
 440 /*
 441 ================
 442 DrawTextureChains
 443 ================
 444 */
 445 extern qboolean hlbsp;
 446 extern void R_Sky();
 447 extern char skyname[];
 448 void DrawTextureChains (void)
 449 {
 450         int             i, j, maps;
 451         msurface_t      *s;
 452         texture_t       *t;
 453         glpoly_t        *p;
 454         float           *v;
 455         float           os = turbsin[(int)(realtime * TURBSCALE) & 255], ot = turbsin[(int)(realtime * TURBSCALE + 96.0) & 255];
 456
 457         // first the sky
 458         skypolyclear();
 459         for (j = 0;j < cl.worldmodel->numtextures;j++)
 460         {
 461                 if (!cl.worldmodel->textures[j] || !(s = cl.worldmodel->textures[j]->texturechain))
 462                         continue;
 463                 // LordHavoc: decide the render type only once, because the surface properties were determined by texture anyway
 464                 // subdivided water surface warp
 465                 if (s->flags & SURF_DRAWSKY)
 466                 {
 467                         cl.worldmodel->textures[j]->texturechain = NULL;
 468                         t = R_TextureAnimation (cl.worldmodel->textures[j]);
 469                         skyisvisible = true;
 470                         if (!hlbsp) // LordHavoc: HalfLife maps have freaky skypolys...
 471                         {
 472                                 for (;s;s = s->texturechain)
 473                                 {
 474                                         for (p=s->polys ; p ; p=p->next)
 475                                         {
 476                                                 if (currentskypoly < MAX_SKYPOLYS && currentskyvert + p->numverts <= MAX_SKYVERTS)
 477                                                 {
 478                                                         skypoly[currentskypoly].firstvert = currentskyvert;
 479                                                         skypoly[currentskypoly++].verts = p->numverts;
 480                                                         for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 481                                                         {
 482                                                                 skyvert[currentskyvert].v[0] = v[0];
 483                                                                 skyvert[currentskyvert].v[1] = v[1];
 484                                                                 skyvert[currentskyvert++].v[2] = v[2];
 485                                                         }
 486                                                 }
 487                                         }
 488                                 }
 489                         }
 490                 }
 491         }
 492         skypolyrender(); // fogged sky polys, affects depth
 493
 494         if (skyname[0] && skyisvisible && !fogenabled)
 495                 R_Sky(); // does not affect depth, draws over the sky polys
 496
 497         // then walls
 498         wallpolyclear();
 499         for (j = 0;j < cl.worldmodel->numtextures;j++)
 500         {
 501                 if (!cl.worldmodel->textures[j] || !(s = cl.worldmodel->textures[j]->texturechain))
 502                         continue;
 503                 if (!(s->flags & SURF_DRAWTURB))
 504                 {
 505                         cl.worldmodel->textures[j]->texturechain = NULL;
 506                         t = R_TextureAnimation (cl.worldmodel->textures[j]);
 507                         for (;s;s = s->texturechain)
 508                         {
 509                                 if (currentwallpoly < MAX_WALLPOLYS && currentwallvert < MAX_WALLVERTS && (currentwallvert + s->polys->numverts) <= MAX_WALLVERTS)
 510                                 {
 511                                         // check for lightmap modification
 512                                         if (r_dynamic.value)
 513                                         {
 514                                                 if (s->dlightframe == r_framecount || s->cached_dlight || lighthalf != s->cached_lighthalf) // dynamic this frame or previously, or lighthalf changed
 515                                                         R_UpdateLightmap(s, s->lightmaptexturenum);
 516                                                 else
 517                                                         for (maps = 0 ; maps < MAXLIGHTMAPS && s->styles[maps] != 255 ; maps++)
 518                                                                 if (d_lightstylevalue[s->styles[maps]] != s->cached_light[maps])
 519                                                                 {
 520                                                                         R_UpdateLightmap(s, s->lightmaptexturenum);
 521                                                                         break;
 522                                                                 }
 523                                         }
 524                                         wallpoly[currentwallpoly].texnum = (unsigned short) t->gl_texturenum;
 525                                         wallpoly[currentwallpoly].lighttexnum = (unsigned short) lightmap_textures + s->lightmaptexturenum;
 526                                         wallpoly[currentwallpoly].glowtexnum = (unsigned short) t->gl_glowtexturenum;
 527                                         wallpoly[currentwallpoly].firstvert = currentwallvert;
 528                                         wallpoly[currentwallpoly++].verts = s->polys->numverts;
 529                                         for (i = 0,v = s->polys->verts[0];i<s->polys->numverts;i++, v += VERTEXSIZE)
 530                                         {
 531                                                 wallvert[currentwallvert].vert[0] = v[0];
 532                                                 wallvert[currentwallvert].vert[1] = v[1];
 533                                                 wallvert[currentwallvert].vert[2] = v[2];
 534                                                 wallvert[currentwallvert].s = v[3];
 535                                                 wallvert[currentwallvert].t = v[4];
 536                                                 wallvert[currentwallvert].u = v[5];
 537                                                 wallvert[currentwallvert++].v = v[6];
 538                                         }
 539                                 }
 540                         }
 541                 }
 542         }
 543         UploadLightmaps();
 544         wallpolyrender();
 545
 546         // then water (water gets diverted to transpoly list)
 547         for (j = 0;j < cl.worldmodel->numtextures;j++)
 548         {
 549                 if (!cl.worldmodel->textures[j] || !(s = cl.worldmodel->textures[j]->texturechain))
 550                         continue;
 551                 cl.worldmodel->textures[j]->texturechain = NULL;
 552                 t = R_TextureAnimation (cl.worldmodel->textures[j]);
 553                 // LordHavoc: decide the render type only once, because the surface properties were determined by texture anyway
 554                 // subdivided water surface warp
 555                 if (s->flags & SURF_DRAWTURB)
 556                 {
 557                         int light, alpha, r = 0, g = 0, b = 0;
 558                         vec3_t nv, shadecolor;
 559                         alpha = s->flags & SURF_DRAWNOALPHA ? 255 : r_wateralpha.value*255.0f;
 560                         light = false;
 561                         if (s->flags & SURF_DRAWFULLBRIGHT)
 562                                 r = g = b = lighthalf ? 128 : 255;
 563                         else if (s->dlightframe == r_dlightframecount && r_dynamic.value)
 564                                 light = true;
 565                         else
 566                                 r = g = b = lighthalf ? 64 : 128;
 567                         if (r_waterripple.value)
 568                         {
 569                                 if (lighthalf)
 570                                 {
 571                                         if (light)
 572                                         {
 573                                                 for (;s;s = s->texturechain)
 574                                                 {
 575                                                         for (p=s->polys ; p ; p=p->next)
 576                                                         {
 577                                                                 // FIXME: could be a transparent water texture
 578                                                                 transpolybegin(s->texinfo->texture->gl_texturenum, s->texinfo->texture->gl_glowtexturenum, 0, TPOLYTYPE_ALPHA);
 579                                                                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 580                                                                 {
 581                                                                         nv[0] = v[0];
 582                                                                         nv[1] = v[1];
 583                                                                         nv[2] = v[2] + r_waterripple.value * turbsin[(int)((v[3]*0.125f+realtime) * TURBSCALE) & 255] * turbsin[(int)((v[4]*0.125f+realtime) * TURBSCALE) & 255] * (1.0f / 64.0f);
 584                                                                         shadecolor[0] = shadecolor[1] = shadecolor[2] = 128;
 585                                                                         R_DynamicLightPoint(shadecolor, nv, s->dlightbits);
 586                                                                         transpolyvert(nv[0], nv[1], nv[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), (int) shadecolor[0] >> 1,(int) shadecolor[1] >> 1,(int) shadecolor[2] >> 1,alpha);
 587                                                                 }
 588                                                                 transpolyend();
 589                                                         }
 590                                                 }
 591                                         }
 592                                         else
 593                                         {
 594                                                 for (;s;s = s->texturechain)
 595                                                 {
 596                                                         for (p=s->polys ; p ; p=p->next)
 597                                                         {
 598                                                                 // FIXME: could be a transparent water texture
 599                                                                 transpolybegin(s->texinfo->texture->gl_texturenum, s->texinfo->texture->gl_glowtexturenum, 0, TPOLYTYPE_ALPHA);
 600                                                                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 601                                                                 {
 602                                                                         nv[0] = v[0];
 603                                                                         nv[1] = v[1];
 604                                                                         nv[2] = v[2] + r_waterripple.value * turbsin[(int)((v[3]*0.125f+realtime) * TURBSCALE) & 255] * turbsin[(int)((v[4]*0.125f+realtime) * TURBSCALE) & 255] * (1.0f / 64.0f);
 605                                                                         transpolyvert(nv[0], nv[1], nv[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), r,g,b,alpha);
 606                                                                 }
 607                                                                 transpolyend();
 608                                                         }
 609                                                 }
 610                                         }
 611                                 }
 612                                 else
 613                                 {
 614                                         if (light)
 615                                         {
 616                                                 for (;s;s = s->texturechain)
 617                                                 {
 618                                                         for (p=s->polys ; p ; p=p->next)
 619                                                         {
 620                                                                 // FIXME: could be a transparent water texture
 621                                                                 transpolybegin(s->texinfo->texture->gl_texturenum, s->texinfo->texture->gl_glowtexturenum, 0, TPOLYTYPE_ALPHA);
 622                                                                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 623                                                                 {
 624                                                                         nv[0] = v[0];
 625                                                                         nv[1] = v[1];
 626                                                                         nv[2] = v[2] + r_waterripple.value * turbsin[(int)((v[3]*0.125f+realtime) * TURBSCALE) & 255] * turbsin[(int)((v[4]*0.125f+realtime) * TURBSCALE) & 255] * (1.0f / 64.0f);
 627                                                                         shadecolor[0] = shadecolor[1] = shadecolor[2] = 128;
 628                                                                         R_DynamicLightPoint(shadecolor, nv, s->dlightbits);
 629                                                                         transpolyvert(nv[0], nv[1], nv[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), shadecolor[0],shadecolor[1],shadecolor[2],alpha);
 630                                                                 }
 631                                                                 transpolyend();
 632                                                         }
 633                                                 }
 634                                         }
 635                                         else
 636                                         {
 637                                                 for (;s;s = s->texturechain)
 638                                                 {
 639                                                         for (p=s->polys ; p ; p=p->next)
 640                                                         {
 641                                                                 // FIXME: could be a transparent water texture
 642                                                                 transpolybegin(s->texinfo->texture->gl_texturenum, s->texinfo->texture->gl_glowtexturenum, 0, TPOLYTYPE_ALPHA);
 643                                                                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 644                                                                 {
 645                                                                         nv[0] = v[0];
 646                                                                         nv[1] = v[1];
 647                                                                         nv[2] = v[2] + r_waterripple.value * turbsin[(int)((v[3]*0.125f+realtime) * TURBSCALE) & 255] * turbsin[(int)((v[4]*0.125f+realtime) * TURBSCALE) & 255] * (1.0f / 64.0f);
 648                                                                         transpolyvert(nv[0], nv[1], nv[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), r,g,b,alpha);
 649                                                                 }
 650                                                                 transpolyend();
 651                                                         }
 652                                                 }
 653                                         }
 654                                 }
 655                         }
 656                         else
 657                         {
 658                                 if (lighthalf)
 659                                 {
 660                                         if (light)
 661                                         {
 662                                                 for (;s;s = s->texturechain)
 663                                                 {
 664                                                         for (p=s->polys ; p ; p=p->next)
 665                                                         {
 666                                                                 // FIXME: could be a transparent water texture
 667                                                                 transpolybegin(s->texinfo->texture->gl_texturenum, s->texinfo->texture->gl_glowtexturenum, 0, TPOLYTYPE_ALPHA);
 668                                                                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 669                                                                 {
 670                                                                         shadecolor[0] = shadecolor[1] = shadecolor[2] = 128;
 671                                                                         R_DynamicLightPoint(shadecolor, v, s->dlightbits);
 672                                                                         transpolyvert(v[0], v[1], v[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), (int) shadecolor[0] >> 1,(int) shadecolor[1] >> 1,(int) shadecolor[2] >> 1,alpha);
 673                                                                 }
 674                                                                 transpolyend();
 675                                                         }
 676                                                 }
 677                                         }
 678                                         else
 679                                         {
 680                                                 for (;s;s = s->texturechain)
 681                                                 {
 682                                                         for (p=s->polys ; p ; p=p->next)
 683                                                         {
 684                                                                 // FIXME: could be a transparent water texture
 685                                                                 transpolybegin(s->texinfo->texture->gl_texturenum, s->texinfo->texture->gl_glowtexturenum, 0, TPOLYTYPE_ALPHA);
 686                                                                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 687                                                                 {
 688                                                                         transpolyvert(v[0], v[1], v[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), r,g,b,alpha);
 689                                                                 }
 690                                                                 transpolyend();
 691                                                         }
 692                                                 }
 693                                         }
 694                                 }
 695                                 else
 696                                 {
 697                                         if (light)
 698                                         {
 699                                                 for (;s;s = s->texturechain)
 700                                                 {
 701                                                         for (p=s->polys ; p ; p=p->next)
 702                                                         {
 703                                                                 // FIXME: could be a transparent water texture
 704                                                                 transpolybegin(s->texinfo->texture->gl_texturenum, s->texinfo->texture->gl_glowtexturenum, 0, TPOLYTYPE_ALPHA);
 705                                                                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 706                                                                 {
 707                                                                         shadecolor[0] = shadecolor[1] = shadecolor[2] = 128;
 708                                                                         R_DynamicLightPoint(shadecolor, v, s->dlightbits);
 709                                                                         transpolyvert(v[0], v[1], v[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), shadecolor[0],shadecolor[1],shadecolor[2],alpha);
 710                                                                 }
 711                                                                 transpolyend();
 712                                                         }
 713                                                 }
 714                                         }
 715                                         else
 716                                         {
 717                                                 for (;s;s = s->texturechain)
 718                                                 {
 719                                                         for (p=s->polys ; p ; p=p->next)
 720                                                         {
 721                                                                 // FIXME: could be a transparent water texture
 722                                                                 transpolybegin(s->texinfo->texture->gl_texturenum, s->texinfo->texture->gl_glowtexturenum, 0, TPOLYTYPE_ALPHA);
 723                                                                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 724                                                                 {
 725                                                                         transpolyvert(v[0], v[1], v[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), r,g,b,alpha);
 726                                                                 }
 727                                                                 transpolyend();
 728                                                         }
 729                                                 }
 730                                         }
 731                                 }
 732                         }
 733                 }
 734         }
 735 }
 736
 737 // LordHavoc: transparent brush models
 738 extern int r_dlightframecount;
 739 extern float modelalpha;
 740 extern vec3_t shadecolor;
 741 //qboolean R_CullBox (vec3_t mins, vec3_t maxs);
 742 void R_DynamicLightPoint(vec3_t color, vec3_t org, int *dlightbits);
 743 void R_DynamicLightPointNoMask(vec3_t color, vec3_t org);
 744 void EmitWaterPolys (msurface_t *fa);
 745 void R_MarkLights (vec3_t lightorigin, dlight_t *light, int bit, int bitindex, mnode_t *node);
 746
 747 /*
 748 =================
 749 R_DrawBrushModel
 750 =================
 751 */
 752 void R_DrawBrushModel (entity_t *e)
 753 {
 754         int                     i, j, k, smax, tmax, size3, maps;
 755         vec3_t          mins, maxs, nv;
 756         msurface_t      *s;
 757         mplane_t        *pplane;
 758         model_t         *clmodel;
 759         qboolean        rotated, vertexlit = false;
 760         float           dot, *v, scale;
 761         texture_t       *t;
 762         byte            *lm;
 763         float           os = turbsin[(int)(realtime * TURBSCALE) & 255], ot = turbsin[(int)(realtime * TURBSCALE + 96.0) & 255];
 764
 765         currententity = e;
 766
 767         clmodel = e->model;
 768
 769         if (e->angles[0] || e->angles[1] || e->angles[2])
 770         {
 771                 rotated = true;
 772                 for (i=0 ; i<3 ; i++)
 773                 {
 774                         mins[i] = e->origin[i] - clmodel->radius;
 775                         maxs[i] = e->origin[i] + clmodel->radius;
 776                 }
 777         }
 778         else
 779         {
 780                 rotated = false;
 781                 VectorAdd (e->origin, clmodel->mins, mins);
 782                 VectorAdd (e->origin, clmodel->maxs, maxs);
 783         }
 784
 785         if (R_CullBox (mins, maxs))
 786                 return;
 787
 788         VectorSubtract (r_refdef.vieworg, e->origin, modelorg);
 789         if (rotated)
 790         {
 791                 vec3_t  temp;
 792                 vec3_t  forward, right, up;
 793
 794                 VectorCopy (modelorg, temp);
 795                 AngleVectors (e->angles, forward, right, up);
 796                 modelorg[0] = DotProduct (temp, forward);
 797                 modelorg[1] = -DotProduct (temp, right);
 798                 modelorg[2] = DotProduct (temp, up);
 799         }
 800
 801         s = &clmodel->surfaces[clmodel->firstmodelsurface];
 802
 803 // calculate dynamic lighting for bmodel if it's not an
 804 // instanced model
 805         if (modelalpha == 1 && clmodel->firstmodelsurface != 0 && !(currententity->effects & EF_FULLBRIGHT) && currententity->colormod[0] == 1 && currententity->colormod[2] == 1 && currententity->colormod[2] == 1)
 806         {
 807 //              if (!gl_flashblend.value)
 808 //              {
 809                         vec3_t org;
 810                         for (k=0 ; k<MAX_DLIGHTS ; k++)
 811                         {
 812                                 if ((cl_dlights[k].die < cl.time) || (!cl_dlights[k].radius))
 813                                         continue;
 814
 815                                 VectorSubtract(cl_dlights[k].origin, currententity->origin, org);
 816                                 R_MarkLights (org, &cl_dlights[k], 1<<(k&31), k >> 5, clmodel->nodes + clmodel->hulls[0].firstclipnode);
 817                         }
 818 //              }
 819         }
 820         else
 821                 vertexlit = true;
 822
 823 e->angles[0] = -e->angles[0];   // stupid quake bug
 824         softwaretransformforentity (e);
 825 e->angles[0] = -e->angles[0];   // stupid quake bug
 826
 827         // draw texture
 828         for (j = 0;j < clmodel->nummodelsurfaces;j++, s++)
 829         {
 830         // find which side of the node we are on
 831                 pplane = s->plane;
 832
 833                 dot = DotProduct (modelorg, pplane->normal) - pplane->dist;
 834
 835         // draw the polygon
 836                 if (((s->flags & SURF_PLANEBACK) && (dot < -BACKFACE_EPSILON)) ||
 837                         (!(s->flags & SURF_PLANEBACK) && (dot > BACKFACE_EPSILON)))
 838                 {
 839                         if (s->flags & SURF_DRAWSKY)
 840                                 continue;
 841                         if (s->flags & SURF_DRAWTURB)
 842                         {
 843                                 glpoly_t        *p;
 844                                 int                     light, alpha, r = 0, g = 0, b = 0;
 845                                 vec3_t          shadecolor;
 846
 847                                 if (s->flags & SURF_DRAWNOALPHA)
 848                                         alpha = modelalpha*255.0f;
 849                                 else
 850                                         alpha = r_wateralpha.value*modelalpha*255.0f;
 851                                 light = false;
 852                                 if (s->flags & SURF_DRAWFULLBRIGHT || currententity->effects & EF_FULLBRIGHT)
 853                                 {
 854                                         if (lighthalf)
 855                                         {
 856                                                 r = 128.0f * currententity->colormod[0];
 857                                                 g = 128.0f * currententity->colormod[1];
 858                                                 b = 128.0f * currententity->colormod[2];
 859                                         }
 860                                         else
 861                                         {
 862                                                 r = 255.0f * currententity->colormod[0];
 863                                                 g = 255.0f * currententity->colormod[1];
 864                                                 b = 255.0f * currententity->colormod[2];
 865                                         }
 866                                 }
 867                                 else if (s->dlightframe == r_dlightframecount && r_dynamic.value)
 868                                         light = true;
 869                                 else
 870                                 {
 871                                         if (lighthalf)
 872                                         {
 873                                                 r = 64.0f * currententity->colormod[0];
 874                                                 g = 64.0f * currententity->colormod[1];
 875                                                 b = 64.0f * currententity->colormod[2];
 876                                         }
 877                                         else
 878                                         {
 879                                                 r = 128.0f * currententity->colormod[0];
 880                                                 g = 128.0f * currententity->colormod[1];
 881                                                 b = 128.0f * currententity->colormod[2];
 882                                         }
 883                                 }
 884                                 for (p=s->polys ; p ; p=p->next)
 885                                 {
 886                                         // FIXME: could be a transparent water texture
 887                                         transpolybegin(s->texinfo->texture->gl_texturenum, s->texinfo->texture->gl_glowtexturenum, 0, currententity->effects & EF_ADDITIVE ? TPOLYTYPE_ADD : TPOLYTYPE_ALPHA);
 888                                         for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 889                                         {
 890                                                 softwaretransform(v, nv);
 891                                                 if (r_waterripple.value)
 892                                                         nv[2] += r_waterripple.value * turbsin[(int)((v[3]*0.125f+realtime) * TURBSCALE) & 255] * turbsin[(int)((v[4]*0.125f+realtime) * TURBSCALE) & 255] * (1.0f / 64.0f);
 893                                                 if (light)
 894                                                 {
 895                                                         shadecolor[0] = shadecolor[1] = shadecolor[2] = 128;
 896                                                         R_DynamicLightPoint(shadecolor, nv, s->dlightbits);
 897                                                         if (lighthalf)
 898                                                         {
 899                                                                 r = (int) ((float) (shadecolor[0] * currententity->colormod[0])) >> 1;
 900                                                                 g = (int) ((float) (shadecolor[1] * currententity->colormod[1])) >> 1;
 901                                                                 b = (int) ((float) (shadecolor[2] * currententity->colormod[2])) >> 1;
 902                                                         }
 903                                                         else
 904                                                         {
 905                                                                 r = (int) ((float) (shadecolor[0] * currententity->colormod[0]));
 906                                                                 g = (int) ((float) (shadecolor[1] * currententity->colormod[1]));
 907                                                                 b = (int) ((float) (shadecolor[2] * currententity->colormod[2]));
 908                                                         }
 909                                                 }
 910                                                 transpolyvert(nv[0], nv[1], nv[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), r,g,b,alpha);
 911                                         }
 912                                         transpolyend();
 913                                 }
 914                                 continue;
 915                         }
 916                         t = R_TextureAnimation (s->texinfo->texture);
 917                         v = s->polys->verts[0];
 918                         if (vertexlit || s->texinfo->texture->transparent)
 919                         {
 920                                 // FIXME: could be a transparent water texture
 921                                 transpolybegin(t->gl_texturenum, t->gl_glowtexturenum, 0, currententity->effects & EF_ADDITIVE ? TPOLYTYPE_ADD : TPOLYTYPE_ALPHA);
 922                                 if ((currententity->effects & EF_FULLBRIGHT) || !s->samples)
 923                                 {
 924                                         for (i = 0;i < s->polys->numverts;i++, v += VERTEXSIZE)
 925                                         {
 926                                                 softwaretransform(v, nv);
 927                                                 transpolyvert(nv[0], nv[1], nv[2], v[3], v[4], 255,255,255,modelalpha*255.0f);
 928                                         }
 929                                 }
 930                                 else
 931                                 {
 932                                         smax = (s->extents[0]>>4)+1;
 933                                         tmax = (s->extents[1]>>4)+1;
 934                                         size3 = smax*tmax*3; // *3 for colored lighting
 935                                         for (i = 0;i < s->polys->numverts;i++, v += VERTEXSIZE)
 936                                         {
 937                                                 shadecolor[0] = shadecolor[1] = shadecolor[2] = 0;
 938                                                 lm = (byte *)((long) s->samples + ((int) v[8] * smax + (int) v[7]) * 3); // LordHavoc: *3 for colored lighting
 939                                                 for (maps = 0;maps < MAXLIGHTMAPS && s->styles[maps] != 255;maps++)
 940                                                 {
 941                                                         scale = d_lightstylevalue[s->styles[maps]] * (1.0 / 128.0);
 942                                                         shadecolor[0] += lm[0] * scale;
 943                                                         shadecolor[1] += lm[1] * scale;
 944                                                         shadecolor[2] += lm[2] * scale;
 945                                                         lm += size3; // LordHavoc: *3 for colored lighting
 946                                                 }
 947                                                 softwaretransform(v, nv);
 948                                                 R_DynamicLightPointNoMask(shadecolor, nv); // LordHavoc: dynamic lighting
 949                                                 if (lighthalf)
 950                                                 {
 951                                                         transpolyvert(nv[0], nv[1], nv[2], v[3], v[4], (int) shadecolor[0] >> 1, (int) shadecolor[1] >> 1, (int) shadecolor[2] >> 1, modelalpha*255.0f);
 952                                                 }
 953                                                 else
 954                                                 {
 955                                                         transpolyvert(nv[0], nv[1], nv[2], v[3], v[4], shadecolor[0], shadecolor[1], shadecolor[2], modelalpha*255.0f);
 956                                                 }
 957                                         }
 958                                 }
 959                                 transpolyend();
 960                         }
 961                         else
 962                         {
 963                                 // check for lightmap modification
 964                                 if (r_dynamic.value)
 965                                 {
 966                                         if (s->dlightframe == r_framecount || s->cached_dlight || lighthalf != s->cached_lighthalf) // dynamic this frame or previously, or lighthalf changed
 967                                                 R_UpdateLightmap(s, s->lightmaptexturenum);
 968                                         else
 969                                                 for (maps = 0 ; maps < MAXLIGHTMAPS && s->styles[maps] != 255 ; maps++)
 970                                                         if (d_lightstylevalue[s->styles[maps]] != s->cached_light[maps])
 971                                                         {
 972                                                                 R_UpdateLightmap(s, s->lightmaptexturenum);
 973                                                                 break;
 974                                                         }
 975                                 }
 976                                 if (currentwallpoly < MAX_WALLPOLYS && (currentwallvert + s->polys->numverts) <= MAX_WALLVERTS)
 977                                 {
 978                                         wallpoly[currentwallpoly].texnum = (unsigned short) t->gl_texturenum;
 979                                         wallpoly[currentwallpoly].lighttexnum = (unsigned short) lightmap_textures + s->lightmaptexturenum;
 980                                         wallpoly[currentwallpoly].glowtexnum = (unsigned short) t->gl_glowtexturenum;
 981                                         wallpoly[currentwallpoly].firstvert = currentwallvert;
 982                                         wallpoly[currentwallpoly++].verts = s->polys->numverts;
 983                                         for (i = 0;i<s->polys->numverts;i++, v += VERTEXSIZE)
 984                                         {
 985                                                 softwaretransform(v, wallvert[currentwallvert].vert);
 986                                                 wallvert[currentwallvert].s = v[3];
 987                                                 wallvert[currentwallvert].t = v[4];
 988                                                 wallvert[currentwallvert].u = v[5];
 989                                                 wallvert[currentwallvert++].v = v[6];
 990                                         }
 991                                 }
 992                         }
 993                 }
 994         }
 995         UploadLightmaps();
 996 }
 997
 998 /*
 999 =============================================================
1000
1001         WORLD MODEL
1002
1003 =============================================================
1004 */
1005
1006 void R_StoreEfrags (efrag_t **ppefrag);
1007
1008 /*
1009 ================
1010 R_RecursiveWorldNode
1011 ================
1012 */
1013 //extern qboolean R_CullBox (vec3_t mins, vec3_t maxs);
1014 /*
1015 void R_RecursiveWorldNode (mnode_t *node)
1016 {
1017         int                     c, side;
1018         double          dot;
1019
1020 loc0:
1021 // if a leaf node, draw stuff
1022         if (node->contents < 0)
1023         {
1024                 mleaf_t         *pleaf;
1025                 pleaf = (mleaf_t *)node;
1026
1027                 if (c = pleaf->nummarksurfaces)
1028                 {
1029                         msurface_t      **mark;
1030                         mark = pleaf->firstmarksurface;
1031                         do
1032                         {
1033                                 (*mark)->visframe = r_framecount;
1034                                 mark++;
1035                         } while (--c);
1036                 }
1037
1038         // deal with model fragments in this leaf
1039                 if (pleaf->efrags)
1040                         R_StoreEfrags (&pleaf->efrags);
1041
1042                 return;
1043         }
1044
1045 // node is just a decision point, so go down the apropriate sides
1046
1047 // find which side of the node we are on
1048         dot = (node->plane->type < 3 ? modelorg[node->plane->type] : DotProduct (modelorg, node->plane->normal)) - node->plane->dist;
1049
1050 // recurse down the children, front side first
1051         side = dot < 0;
1052         // LordHavoc: save a stack frame by avoiding a call
1053 //      if (node->children[side]->contents != CONTENTS_SOLID && node->children[side]->visframe == r_visframecount && !R_CullBox (node->children[side]->minmaxs, node->children[side]->minmaxs+3))
1054         // LordHavoc: inlined further to reduce conditions
1055         if (node->children[side]->contents != CONTENTS_SOLID
1056          && node->children[side]->visframe == r_visframecount
1057          && frustum[0].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[0]) != 2
1058          && frustum[1].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[1]) != 2
1059          && frustum[2].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[2]) != 2
1060          && frustum[3].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[3]) != 2)
1061                 R_RecursiveWorldNode (node->children[side]);
1062
1063         // backside
1064         side = dot >= 0;
1065 // draw stuff
1066         if (c = node->numsurfaces)
1067         {
1068                 msurface_t      *surf;
1069                 surf = cl.worldmodel->surfaces + node->firstsurface;
1070
1071                 // LordHavoc: caused a crash due to texsort (it could render twice...)
1072                 // back side
1073                 //side = dot >= -BACKFACE_EPSILON;
1074                 if (dot < 0)
1075                 {
1076                         for (;c;c--, surf++)
1077                         {
1078                                 if (surf->visframe == r_framecount && (surf->flags & SURF_PLANEBACK))
1079                                 {
1080                                         surf->texturechain = surf->texinfo->texture->texturechain;
1081                                         surf->texinfo->texture->texturechain = surf;
1082                                 }
1083                         }
1084                 }
1085                 else
1086                 {
1087                         for (;c;c--, surf++)
1088                         {
1089                                 if (surf->visframe == r_framecount && (!(surf->flags & SURF_PLANEBACK)))
1090                                 {
1091                                         surf->texturechain = surf->texinfo->texture->texturechain;
1092                                         surf->texinfo->texture->texturechain = surf;
1093                                 }
1094                         }
1095                 }
1096         }
1097
1098 // recurse down the back side
1099         // LordHavoc: save a stack frame by avoiding a call
1100 //      if (node->children[side]->contents != CONTENTS_SOLID && node->children[side]->visframe == r_visframecount && !R_CullBox (node->children[side]->minmaxs, node->children[side]->minmaxs+3))
1101         // LordHavoc: inlined further to reduce conditions
1102         if (node->children[side]->contents != CONTENTS_SOLID
1103          && node->children[side]->visframe == r_visframecount
1104          && frustum[0].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[0]) != 2
1105          && frustum[1].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[1]) != 2
1106          && frustum[2].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[2]) != 2
1107          && frustum[3].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[3]) != 2)
1108         {
1109                 node = node->children[side];
1110                 goto loc0;
1111         }
1112 //              R_RecursiveWorldNode (node->children[side]);
1113 }
1114 */
1115
1116 extern int c_nodes;
1117 void R_WorldNode ()
1118 {
1119         int             c, side;
1120         double  dot;
1121         struct
1122         {
1123                 double dot;
1124                 mnode_t *node;
1125         } nodestack[1024];
1126         int             s = 0;
1127         mnode_t *node;
1128
1129         if (!(node = cl.worldmodel->nodes))
1130                 return;
1131
1132         while(1)
1133         {
1134         // if a leaf node, draw stuff
1135                 c_nodes++;
1136                 if (node->contents < 0)
1137                 {
1138                         if (node->contents != CONTENTS_SOLID)
1139                         {
1140                                 mleaf_t         *pleaf;
1141                                 pleaf = (mleaf_t *)node;
1142
1143                                 if ((c = pleaf->nummarksurfaces))
1144                                 {
1145                                         msurface_t      **mark;
1146                                         mark = pleaf->firstmarksurface;
1147                                         do
1148                                         {
1149                                                 (*mark)->visframe = r_framecount;
1150                                                 mark++;
1151                                         } while (--c);
1152                                 }
1153
1154                                 // deal with model fragments in this leaf
1155                                 if (pleaf->efrags)
1156                                         R_StoreEfrags (&pleaf->efrags);
1157                         }
1158
1159                         if (!s)
1160                                 break;
1161                         node = nodestack[--s].node;
1162                         dot = nodestack[s].dot;
1163                         goto loc0;
1164                 }
1165
1166         // node is just a decision point, so go down the apropriate sides
1167
1168         // find which side of the node we are on
1169                 dot = (node->plane->type < 3 ? modelorg[node->plane->type] : DotProduct (modelorg, node->plane->normal)) - node->plane->dist;
1170
1171         // recurse down the children, front side first
1172                 side = dot < 0;
1173                 if (node->children[side]->visframe == r_visframecount
1174                  && frustum[0].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[0]) != 2
1175                  && frustum[1].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[1]) != 2
1176                  && frustum[2].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[2]) != 2
1177                  && frustum[3].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[3]) != 2)
1178                 {
1179                         nodestack[s].node = node;
1180                         nodestack[s++].dot = dot;
1181                         node = node->children[side];
1182                         continue;
1183                 }
1184 loc0:
1185
1186                 // backside
1187                 side = dot >= 0;
1188         // draw stuff
1189                 if ((c = node->numsurfaces))
1190                 {
1191                         msurface_t      *surf;
1192                         surf = cl.worldmodel->surfaces + node->firstsurface;
1193
1194                         if (side)
1195                         {
1196                                 for (;c;c--, surf++)
1197                                 {
1198                                         if (surf->visframe == r_framecount && !(surf->flags & SURF_PLANEBACK))
1199                                         {
1200                                                 surf->texturechain = surf->texinfo->texture->texturechain;
1201                                                 surf->texinfo->texture->texturechain = surf;
1202                                         }
1203                                 }
1204                         }
1205                         else
1206                         {
1207                                 for (;c;c--, surf++)
1208                                 {
1209                                         if (surf->visframe == r_framecount && (surf->flags & SURF_PLANEBACK))
1210                                         {
1211                                                 surf->texturechain = surf->texinfo->texture->texturechain;
1212                                                 surf->texinfo->texture->texturechain = surf;
1213                                         }
1214                                 }
1215                         }
1216                 }
1217
1218         // recurse down the back side
1219                 if (node->children[side]->visframe == r_visframecount
1220                  && frustum[0].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[0]) != 2
1221                  && frustum[1].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[1]) != 2
1222                  && frustum[2].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[2]) != 2
1223                  && frustum[3].BoxOnPlaneSideFunc(node->children[side]->minmaxs, node->children[side]->minmaxs+3, &frustum[3]) != 2)
1224                 {
1225                         node = node->children[side];
1226                         continue;
1227                 }
1228
1229                 if (!s)
1230                         break;
1231                 node = nodestack[--s].node;
1232                 dot = nodestack[s].dot;
1233                 goto loc0;
1234         }
1235 }
1236
1237
1238 /*
1239 =============
1240 R_DrawWorld
1241 =============
1242 */
1243 void R_DrawWorld (void)
1244 {
1245         entity_t        ent;
1246
1247         memset (&ent, 0, sizeof(ent));
1248         ent.model = cl.worldmodel;
1249         ent.colormod[0] = ent.colormod[1] = ent.colormod[2] = 1;
1250         modelalpha = ent.alpha = 1;
1251         ent.scale = 1;
1252
1253         VectorCopy (r_refdef.vieworg, modelorg);
1254
1255         currententity = &ent;
1256
1257         softwaretransformidentity(); // LordHavoc: clear transform
1258         skyisvisible = false;
1259
1260         if (cl.worldmodel)
1261                 R_WorldNode ();
1262
1263         glClear (GL_DEPTH_BUFFER_BIT);
1264
1265         DrawTextureChains ();
1266
1267         glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
1268         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1269 }
1270
1271
1272 /*
1273 ===============
1274 R_MarkLeaves
1275 ===============
1276 */
1277 void R_MarkLeaves (void)
1278 {
1279         byte    *vis;
1280         mnode_t *node;
1281         int             i;
1282
1283         if (r_oldviewleaf == r_viewleaf && !r_novis.value)
1284                 return;
1285
1286         r_visframecount++;
1287         r_oldviewleaf = r_viewleaf;
1288
1289         if (r_novis.value)
1290         {
1291                 for (i=0 ; i<cl.worldmodel->numleafs ; i++)
1292                 {
1293                         node = (mnode_t *)&cl.worldmodel->leafs[i+1];
1294                         do
1295                         {
1296                                 if (node->visframe == r_visframecount)
1297                                         break;
1298                                 node->visframe = r_visframecount;
1299                                 node = node->parent;
1300                         } while (node);
1301                 }
1302         }
1303         else
1304         {
1305                 vis = Mod_LeafPVS (r_viewleaf, cl.worldmodel);
1306
1307                 for (i=0 ; i<cl.worldmodel->numleafs ; i++)
1308                 {
1309                         if (vis[i>>3] & (1<<(i&7)))
1310                         {
1311                                 node = (mnode_t *)&cl.worldmodel->leafs[i+1];
1312                                 do
1313                                 {
1314                                         if (node->visframe == r_visframecount)
1315                                                 break;
1316                                         node->visframe = r_visframecount;
1317                                         node = node->parent;
1318                                 } while (node);
1319                         }
1320                 }
1321         }
1322 }
1323
1324
1325
1326 /*
1327 =============================================================================
1328
1329   LIGHTMAP ALLOCATION
1330
1331 =============================================================================
1332 */
1333
1334 // returns a texture number and the position inside it
1335 int AllocBlock (int w, int h, int *x, int *y)
1336 {
1337         int             i, j;
1338         int             best, best2;
1339         int             texnum;
1340
1341         for (texnum=0 ; texnum<MAX_LIGHTMAPS ; texnum++)
1342         {
1343                 best = BLOCK_HEIGHT;
1344
1345                 for (i=0 ; i<BLOCK_WIDTH-w ; i+=lightmapalign) // LordHavoc: NVIDIA has broken subimage, so align the lightmaps
1346                 {
1347                         best2 = 0;
1348
1349                         for (j=0 ; j<w ; j++)
1350                         {
1351                                 if (allocated[texnum][i+j] >= best)
1352                                         break;
1353                                 if (allocated[texnum][i+j] > best2)
1354                                         best2 = allocated[texnum][i+j];
1355                         }
1356                         if (j == w)
1357                         {       // this is a valid spot
1358                                 *x = i;
1359                                 *y = best = best2;
1360                         }
1361                 }
1362
1363                 if (best + h > BLOCK_HEIGHT)
1364                         continue;
1365
1366                 if (nosubimagefragments || nosubimage)
1367                 {
1368                         if (!lightmaps[texnum])
1369                                 lightmaps[texnum] = calloc(BLOCK_WIDTH*BLOCK_HEIGHT*4, 1);
1370                 }
1371                 // LordHavoc: clear texture to blank image, fragments are uploaded using subimage
1372                 else if (!allocated[texnum][0])
1373                 {
1374                         byte blank[BLOCK_WIDTH*BLOCK_HEIGHT*3];
1375                         memset(blank, 0, sizeof(blank));
1376                         glBindTexture(GL_TEXTURE_2D, lightmap_textures + texnum);
1377                         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
1378                         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
1379                         if (lightmaprgba)
1380                                 glTexImage2D (GL_TEXTURE_2D, 0, 4, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE, blank);
1381                         else
1382                                 glTexImage2D (GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, blank);
1383                 }
1384
1385                 for (i=0 ; i<w ; i++)
1386                         allocated[texnum][*x + i] = best + h;
1387
1388                 return texnum;
1389         }
1390
1391         Sys_Error ("AllocBlock: full");
1392         return 0;
1393 }
1394
1395
1396 mvertex_t       *r_pcurrentvertbase;
1397 model_t         *currentmodel;
1398
1399 int     nColinElim;
1400
1401 /*
1402 ================
1403 BuildSurfaceDisplayList
1404 ================
1405 */
1406 void BuildSurfaceDisplayList (msurface_t *fa)
1407 {
1408         int                     i, lindex, lnumverts;
1409         medge_t         *pedges, *r_pedge;
1410         int                     vertpage;
1411         float           *vec;
1412         float           s, t;
1413         glpoly_t        *poly;
1414
1415 // reconstruct the polygon
1416         pedges = currentmodel->edges;
1417         lnumverts = fa->numedges;
1418         vertpage = 0;
1419
1420         //
1421         // draw texture
1422         //
1423         poly = Hunk_Alloc (sizeof(glpoly_t) + (lnumverts-4) * VERTEXSIZE*sizeof(float));
1424         poly->next = fa->polys;
1425         poly->flags = fa->flags;
1426         fa->polys = poly;
1427         poly->numverts = lnumverts;
1428
1429         for (i=0 ; i<lnumverts ; i++)
1430         {
1431                 lindex = currentmodel->surfedges[fa->firstedge + i];
1432
1433                 if (lindex > 0)
1434                 {
1435                         r_pedge = &pedges[lindex];
1436                         vec = r_pcurrentvertbase[r_pedge->v[0]].position;
1437                 }
1438                 else
1439                 {
1440                         r_pedge = &pedges[-lindex];
1441                         vec = r_pcurrentvertbase[r_pedge->v[1]].position;
1442                 }
1443                 s = DotProduct (vec, fa->texinfo->vecs[0]) + fa->texinfo->vecs[0][3];
1444                 s /= fa->texinfo->texture->width;
1445
1446                 t = DotProduct (vec, fa->texinfo->vecs[1]) + fa->texinfo->vecs[1][3];
1447                 t /= fa->texinfo->texture->height;
1448
1449                 VectorCopy (vec, poly->verts[i]);
1450                 poly->verts[i][3] = s;
1451                 poly->verts[i][4] = t;
1452
1453                 //
1454                 // lightmap texture coordinates
1455                 //
1456                 s = DotProduct (vec, fa->texinfo->vecs[0]) + fa->texinfo->vecs[0][3];
1457                 s -= fa->texturemins[0];
1458                 poly->verts[i][7] = bound(0l, ((int)s>>4), (fa->extents[0]>>4)); // LordHavoc: raw lightmap coordinates
1459                 s += fa->light_s*16;
1460                 s += 8;
1461                 s /= BLOCK_WIDTH*16; //fa->texinfo->texture->width;
1462
1463                 t = DotProduct (vec, fa->texinfo->vecs[1]) + fa->texinfo->vecs[1][3];
1464                 t -= fa->texturemins[1];
1465                 poly->verts[i][8] = bound(0l, ((int)t>>4), (fa->extents[1]>>4)); // LordHavoc: raw lightmap coordinates
1466                 t += fa->light_t*16;
1467                 t += 8;
1468                 t /= BLOCK_HEIGHT*16; //fa->texinfo->texture->height;
1469
1470                 poly->verts[i][5] = s;
1471                 poly->verts[i][6] = t;
1472         }
1473
1474         //
1475         // remove co-linear points - Ed
1476         //
1477         /*
1478         if (!gl_keeptjunctions.value)
1479         {
1480                 for (i = 0 ; i < lnumverts ; ++i)
1481                 {
1482                         vec3_t v1, v2;
1483                         float *prev, *this, *next;
1484
1485                         prev = poly->verts[(i + lnumverts - 1) % lnumverts];
1486                         this = poly->verts[i];
1487                         next = poly->verts[(i + 1) % lnumverts];
1488
1489                         VectorSubtract( this, prev, v1 );
1490                         VectorNormalize( v1 );
1491                         VectorSubtract( next, prev, v2 );
1492                         VectorNormalize( v2 );
1493
1494                         // skip co-linear points
1495                         #define COLINEAR_EPSILON 0.001
1496                         if ((fabs( v1[0] - v2[0] ) <= COLINEAR_EPSILON) &&
1497                                 (fabs( v1[1] - v2[1] ) <= COLINEAR_EPSILON) &&
1498                                 (fabs( v1[2] - v2[2] ) <= COLINEAR_EPSILON))
1499                         {
1500                                 int j;
1501                                 for (j = i + 1; j < lnumverts; ++j)
1502                                 {
1503                                         int k;
1504                                         for (k = 0; k < VERTEXSIZE; ++k)
1505                                                 poly->verts[j - 1][k] = poly->verts[j][k];
1506                                 }
1507                                 --lnumverts;
1508                                 ++nColinElim;
1509                                 // retry next vertex next time, which is now current vertex
1510                                 --i;
1511                         }
1512                 }
1513         }
1514         */
1515         poly->numverts = lnumverts;
1516
1517 }
1518
1519 /*
1520 ========================
1521 GL_CreateSurfaceLightmap
1522 ========================
1523 */
1524 void GL_CreateSurfaceLightmap (msurface_t *surf)
1525 {
1526         int             smax, tmax;
1527
1528         if (surf->flags & (SURF_DRAWSKY|SURF_DRAWTURB))
1529                 return;
1530
1531         smax = (surf->extents[0]>>4)+1;
1532         tmax = (surf->extents[1]>>4)+1;
1533
1534         surf->lightmaptexturenum = AllocBlock (smax, tmax, &surf->light_s, &surf->light_t);
1535         if (nosubimage || nosubimagefragments)
1536                 return;
1537         glBindTexture(GL_TEXTURE_2D, lightmap_textures + surf->lightmaptexturenum);
1538         smax = ((surf->extents[0]>>4)+lightmapalign) & lightmapalignmask;
1539         if (lightmaprgba)
1540         {
1541                 R_BuildLightMap (surf, templight, smax * 4);
1542                 glTexSubImage2D(GL_TEXTURE_2D, 0, surf->light_s, surf->light_t, smax, tmax, GL_RGBA, GL_UNSIGNED_BYTE, templight);
1543         }
1544         else
1545         {
1546                 R_BuildLightMap (surf, templight, smax * 3);
1547                 glTexSubImage2D(GL_TEXTURE_2D, 0, surf->light_s, surf->light_t, smax, tmax, GL_RGB , GL_UNSIGNED_BYTE, templight);
1548         }
1549 }
1550
1551
1552 /*
1553 ==================
1554 GL_BuildLightmaps
1555
1556 Builds the lightmap texture
1557 with all the surfaces from all brush models
1558 ==================
1559 */
1560 void GL_BuildLightmaps (void)
1561 {
1562         int             i, j;
1563         model_t *m;
1564
1565         memset (allocated, 0, sizeof(allocated));
1566
1567         r_framecount = 1;               // no dlightcache
1568
1569         if (gl_nosubimagefragments.value)
1570                 nosubimagefragments = 1;
1571         else
1572                 nosubimagefragments = 0;
1573
1574         if (gl_nosubimage.value)
1575                 nosubimage = 1;
1576         else
1577                 nosubimage = 0;
1578
1579         if (gl_lightmaprgba.value)
1580         {
1581                 lightmaprgba = true;
1582                 lightmapbytes = 4;
1583         }
1584         else
1585         {
1586                 lightmaprgba = false;
1587                 lightmapbytes = 3;
1588         }
1589
1590         // LordHavoc: NVIDIA seems to have a broken glTexSubImage2D,
1591         //            it needs to be aligned on 4 pixel boundaries...
1592         //            so I implemented an adjustable lightmap alignment
1593         if (gl_lightmapalign.value < 1)
1594                 gl_lightmapalign.value = 1;
1595         if (gl_lightmapalign.value > 16)
1596                 gl_lightmapalign.value = 16;
1597         lightmapalign = 1;
1598         while (lightmapalign < gl_lightmapalign.value)
1599                 lightmapalign <<= 1;
1600         gl_lightmapalign.value = lightmapalign;
1601         lightmapalignmask = ~(lightmapalign - 1);
1602         if (nosubimagefragments || nosubimage)
1603         {
1604                 lightmapalign = 1;
1605                 lightmapalignmask = ~0;
1606         }
1607
1608         if (!lightmap_textures)
1609         {
1610                 lightmap_textures = texture_extension_number;
1611                 texture_extension_number += MAX_LIGHTMAPS;
1612         }
1613
1614         for (j=1 ; j<MAX_MODELS ; j++)
1615         {
1616                 m = cl.model_precache[j];
1617                 if (!m)
1618                         break;
1619                 if (m->name[0] == '*')
1620                         continue;
1621                 r_pcurrentvertbase = m->vertexes;
1622                 currentmodel = m;
1623                 for (i=0 ; i<m->numsurfaces ; i++)
1624                 {
1625                         if ( m->surfaces[i].flags & SURF_DRAWTURB )
1626                                 continue;
1627                         if ( m->surfaces[i].flags & SURF_DRAWSKY )
1628                                 continue;
1629                         GL_CreateSurfaceLightmap (m->surfaces + i);
1630                         BuildSurfaceDisplayList (m->surfaces + i);
1631                 }
1632         }
1633
1634         if (nosubimage || nosubimagefragments)
1635         {
1636                 if (gl_mtexable)
1637                         qglSelectTexture(gl_mtex_enum+1);
1638                 for (i = 0;i < MAX_LIGHTMAPS;i++)
1639                 {
1640                         if (!allocated[i][0])
1641                                 break;
1642                         lightmapupdate[i][0] = BLOCK_HEIGHT;
1643                         lightmapupdate[i][1] = 0;
1644                         glBindTexture(GL_TEXTURE_2D, lightmap_textures + i);
1645                         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
1646                         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
1647                         if (lightmaprgba)
1648                                 glTexImage2D(GL_TEXTURE_2D, 0, 4, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE, lightmaps[i]);
1649                         else
1650                                 glTexImage2D(GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, lightmaps[i]);
1651                 }
1652                 if (gl_mtexable)
1653                         qglSelectTexture(gl_mtex_enum+0);
1654         }
1655 }
1656