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 int             lightmap_textures;
  25
  26 // LordHavoc: skinny but tall lightmaps for quicker subimage uploads
  27 #define BLOCK_WIDTH             256
  28 #define BLOCK_HEIGHT    256
  29 // LordHavoc: increased lightmap limit from 64 to 1024
  30 #define MAX_LIGHTMAPS   1024
  31 #define LIGHTMAPSIZE    (BLOCK_WIDTH*BLOCK_HEIGHT*4)
  32
  33 int                     active_lightmaps;
  34
  35 short allocated[MAX_LIGHTMAPS][BLOCK_WIDTH];
  36
  37 byte *lightmaps[MAX_LIGHTMAPS];
  38 short lightmapupdate[MAX_LIGHTMAPS][2];
  39
  40 signed int blocklights[BLOCK_WIDTH*BLOCK_HEIGHT*3]; // LordHavoc: *3 for colored lighting
  41
  42 int lightmapalign, lightmapalignmask; // LordHavoc: NVIDIA's broken subimage fix, see BuildLightmaps for notes
  43 cvar_t gl_lightmapalign = {"gl_lightmapalign", "4"};
  44 cvar_t gl_lightmaprgba = {"gl_lightmaprgba", "1"};
  45 cvar_t gl_nosubimagefragments = {"gl_nosubimagefragments", "0"};
  46 cvar_t gl_nosubimage = {"gl_nosubimage", "0"};
  47 cvar_t r_ambient = {"r_ambient", "0"};
  48 cvar_t gl_vertex = {"gl_vertex", "0"};
  49 cvar_t r_dlightmap = {"r_dlightmap", "1"};
  50 cvar_t r_drawportals = {"r_drawportals", "0"};
  51
  52 qboolean lightmaprgba, nosubimagefragments, nosubimage;
  53 int lightmapbytes;
  54
  55 int wateralpha;
  56
  57 void gl_surf_start(void)
  58 {
  59 }
  60
  61 void gl_surf_shutdown(void)
  62 {
  63 }
  64
  65 void gl_surf_newmap(void)
  66 {
  67 }
  68
  69 void GL_Surf_Init(void)
  70 {
  71         int i;
  72         for (i = 0;i < MAX_LIGHTMAPS;i++)
  73                 lightmaps[i] = NULL;
  74         Cvar_RegisterVariable(&gl_lightmapalign);
  75         Cvar_RegisterVariable(&gl_lightmaprgba);
  76         Cvar_RegisterVariable(&gl_nosubimagefragments);
  77         Cvar_RegisterVariable(&gl_nosubimage);
  78         Cvar_RegisterVariable(&r_ambient);
  79         Cvar_RegisterVariable(&gl_vertex);
  80         Cvar_RegisterVariable(&r_dlightmap);
  81         Cvar_RegisterVariable(&r_drawportals);
  82
  83         R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
  84 }
  85
  86 int         dlightdivtable[32768];
  87
  88 /*
  89         R_AddDynamicLights
  90 */
  91 int R_AddDynamicLights (msurface_t *surf)
  92 {
  93         int         sdtable[18], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, red, green, blue, lit, dist2, impacts, impactt;
  94         unsigned int *bl;
  95         float       dist;
  96         vec3_t      impact, local;
  97
  98         // LordHavoc: use 64bit integer...  shame it's not very standardized...
  99 #if _MSC_VER || __BORLANDC__
 100         __int64     k;
 101 #else
 102         long long   k;
 103 #endif
 104
 105         lit = false;
 106
 107         if (!dlightdivtable[1])
 108         {
 109                 dlightdivtable[0] = 4194304;
 110                 for (s = 1; s < 32768; s++)
 111                         dlightdivtable[s] = 4194304 / (s << 7);
 112         }
 113
 114         smax = (surf->extents[0] >> 4) + 1;
 115         tmax = (surf->extents[1] >> 4) + 1;
 116
 117         for (lnum = 0; lnum < MAX_DLIGHTS; lnum++)
 118         {
 119                 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
 120                         continue;                                       // not lit by this light
 121
 122                 VectorSubtract (cl_dlights[lnum].origin, currententity->render.origin, local);
 123                 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
 124
 125                 // for comparisons to minimum acceptable light
 126                 maxdist = (int) ((cl_dlights[lnum].radius * cl_dlights[lnum].radius));
 127
 128                 // clamp radius to avoid exceeding 32768 entry division table
 129                 if (maxdist > 4194304)
 130                         maxdist = 4194304;
 131
 132                 dist2 = dist * dist;
 133                 if (dist2 >= maxdist)
 134                         continue;
 135
 136                 impact[0] = cl_dlights[lnum].origin[0] - surf->plane->normal[0] * dist;
 137                 impact[1] = cl_dlights[lnum].origin[1] - surf->plane->normal[1] * dist;
 138                 impact[2] = cl_dlights[lnum].origin[2] - surf->plane->normal[2] * dist;
 139
 140                 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 141                 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 142
 143                 s = bound(0, impacts, smax * 16) - impacts;
 144                 t = bound(0, impactt, tmax * 16) - impactt;
 145                 i = s * s + t * t + dist2;
 146                 if (i > maxdist)
 147                         continue;
 148
 149                 // reduce calculations
 150                 for (s = 0, i = impacts; s < smax; s++, i -= 16)
 151                         sdtable[s] = i * i + dist2 + LIGHTOFFSET;
 152
 153                 maxdist3 = maxdist - (int) (dist * dist);
 154
 155                 // convert to 8.8 blocklights format and scale up by radius
 156                 red = cl_dlights[lnum].color[0] * maxdist;
 157                 green = cl_dlights[lnum].color[1] * maxdist;
 158                 blue = cl_dlights[lnum].color[2] * maxdist;
 159                 bl = blocklights;
 160
 161                 i = impactt;
 162                 for (t = 0; t < tmax; t++, i -= 16)
 163                 {
 164                         td = i * i;
 165                         // make sure some part of it is visible on this line
 166                         if (td < maxdist3)
 167                         {
 168                                 maxdist2 = maxdist - td;
 169                                 for (s = 0; s < smax; s++)
 170                                 {
 171                                         if (sdtable[s] < maxdist2)
 172                                         {
 173                                                 k = dlightdivtable[(sdtable[s] + td) >> 7];
 174                                                 bl[0] += (red   * k) >> 9;
 175                                                 bl[1] += (green * k) >> 9;
 176                                                 bl[2] += (blue  * k) >> 9;
 177                                                 lit = true;
 178                                         }
 179                                         bl += 3;
 180                                 }
 181                         }
 182                         else // skip line
 183                                 bl += smax * 3;
 184                 }
 185         }
 186         return lit;
 187 }
 188
 189
 190 void R_ConvertLightmap (int *in, byte *out, int width, int height, int stride)
 191 {
 192         int i, j;
 193         stride -= (width*lightmapbytes);
 194         if (lighthalf)
 195         {
 196                 // LordHavoc: I shift down by 8 unlike GLQuake's 7,
 197                 // the image is brightened as a processing pass
 198                 if (lightmaprgba)
 199                 {
 200                         for (i = 0;i < height;i++, out += stride)
 201                         {
 202                                 for (j = 0;j < width;j++, in += 3, out += 4)
 203                                 {
 204                                         out[0] = min(in[0] >> 8, 255);
 205                                         out[1] = min(in[1] >> 8, 255);
 206                                         out[2] = min(in[2] >> 8, 255);
 207                                         out[3] = 255;
 208                                 }
 209                         }
 210                 }
 211                 else
 212                 {
 213                         for (i = 0;i < height;i++, out += stride)
 214                         {
 215                                 for (j = 0;j < width;j++, in += 3, out += 3)
 216                                 {
 217                                         out[0] = min(in[0] >> 8, 255);
 218                                         out[1] = min(in[1] >> 8, 255);
 219                                         out[2] = min(in[2] >> 8, 255);
 220                                 }
 221                         }
 222                 }
 223         }
 224         else
 225         {
 226                 if (lightmaprgba)
 227                 {
 228                         for (i = 0;i < height;i++, out += stride)
 229                         {
 230                                 for (j = 0;j < width;j++, in += 3, out += 4)
 231                                 {
 232                                         out[0] = min(in[0] >> 7, 255);
 233                                         out[1] = min(in[1] >> 7, 255);
 234                                         out[2] = min(in[2] >> 7, 255);
 235                                         out[3] = 255;
 236                                 }
 237                         }
 238                 }
 239                 else
 240                 {
 241                         for (i = 0;i < height;i++, out += stride)
 242                         {
 243                                 for (j = 0;j < width;j++, in += 3, out += 3)
 244                                 {
 245                                         out[0] = min(in[0] >> 7, 255);
 246                                         out[1] = min(in[1] >> 7, 255);
 247                                         out[2] = min(in[2] >> 7, 255);
 248                                 }
 249                         }
 250                 }
 251         }
 252 }
 253
 254 /*
 255 ===============
 256 R_BuildLightMap
 257
 258 Combine and scale multiple lightmaps into the 8.8 format in blocklights
 259 ===============
 260 */
 261 void R_BuildLightMap (msurface_t *surf, byte *dest, int stride)
 262 {
 263         int                     smax, tmax;
 264         int                     i, j, size, size3;
 265         byte            *lightmap;
 266         int                     scale;
 267         int                     maps;
 268         int                     *bl;
 269
 270         surf->cached_dlight = 0;
 271         surf->cached_lighthalf = lighthalf;
 272         surf->cached_ambient = r_ambient.value;
 273
 274         smax = (surf->extents[0]>>4)+1;
 275         tmax = (surf->extents[1]>>4)+1;
 276         size = smax*tmax;
 277         size3 = size*3;
 278         lightmap = surf->samples;
 279
 280 // set to full bright if no light data
 281         if ((currententity && (currententity->render.effects & EF_FULLBRIGHT)) || !cl.worldmodel->lightdata)
 282         {
 283                 bl = blocklights;
 284                 for (i=0 ; i<size ; i++)
 285                 {
 286                         *bl++ = 255*256;
 287                         *bl++ = 255*256;
 288                         *bl++ = 255*256;
 289                 }
 290         }
 291         else
 292         {
 293 // clear to no light
 294                 j = r_ambient.value * 512.0f; // would be 256.0f logically, but using 512.0f to match winquake style
 295                 if (j)
 296                 {
 297                         bl = blocklights;
 298                         for (i = 0;i < size3;i++)
 299                                 *bl++ = j;
 300                 }
 301                 else
 302                         memset(&blocklights[0], 0, size*3*sizeof(int));
 303
 304 // add all the lightmaps
 305                 if (lightmap)
 306                 {
 307                         for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++)
 308                         {
 309                                 scale = d_lightstylevalue[surf->styles[maps]];
 310                                 surf->cached_light[maps] = scale;       // 8.8 fraction
 311                                 bl = blocklights;
 312                                 for (i = 0;i < size3;i++)
 313                                         *bl++ += *lightmap++ * scale;
 314                         }
 315                 }
 316                 if (r_dlightmap.value && surf->dlightframe == r_framecount)
 317                         if ((surf->cached_dlight = R_AddDynamicLights(surf)))
 318                                 c_light_polys++;
 319         }
 320         R_ConvertLightmap(blocklights, dest, smax, tmax, stride);
 321 }
 322
 323 byte templight[BLOCK_WIDTH*BLOCK_HEIGHT*4];
 324
 325 void R_UpdateLightmap(msurface_t *s, int lnum)
 326 {
 327         int smax, tmax;
 328         // upload the new lightmap texture fragment
 329         if(r_upload.value)
 330                 glBindTexture(GL_TEXTURE_2D, lightmap_textures + lnum);
 331         if (nosubimage || nosubimagefragments)
 332         {
 333                 if (lightmapupdate[lnum][0] > s->light_t)
 334                         lightmapupdate[lnum][0] = s->light_t;
 335                 if (lightmapupdate[lnum][1] < (s->light_t + ((s->extents[1]>>4)+1)))
 336                         lightmapupdate[lnum][1] = (s->light_t + ((s->extents[1]>>4)+1));
 337                 if (lightmaprgba)
 338                         R_BuildLightMap (s, lightmaps[s->lightmaptexturenum] + (s->light_t * BLOCK_WIDTH + s->light_s) * 4, BLOCK_WIDTH * 4);
 339                 else
 340                         R_BuildLightMap (s, lightmaps[s->lightmaptexturenum] + (s->light_t * BLOCK_WIDTH + s->light_s) * 3, BLOCK_WIDTH * 3);
 341         }
 342         else
 343         {
 344                 smax = ((s->extents[0]>>4)+lightmapalign) & lightmapalignmask;
 345                 tmax = (s->extents[1]>>4)+1;
 346                 if (lightmaprgba)
 347                 {
 348                         R_BuildLightMap (s, templight, smax * 4);
 349                         if(r_upload.value)
 350                                 glTexSubImage2D(GL_TEXTURE_2D, 0, s->light_s, s->light_t, smax, tmax, GL_RGBA, GL_UNSIGNED_BYTE, templight);
 351                 }
 352                 else
 353                 {
 354                         R_BuildLightMap (s, templight, smax * 3);
 355                         if(r_upload.value)
 356                                 glTexSubImage2D(GL_TEXTURE_2D, 0, s->light_s, s->light_t, smax, tmax, GL_RGB , GL_UNSIGNED_BYTE, templight);
 357                 }
 358         }
 359 }
 360
 361
 362 /*
 363 ===============
 364 R_TextureAnimation
 365
 366 Returns the proper texture for a given time and base texture
 367 ===============
 368 */
 369 texture_t *R_TextureAnimation (texture_t *base)
 370 {
 371 //      texture_t *original;
 372 //      int             relative;
 373 //      int             count;
 374
 375         if (currententity->render.frame)
 376         {
 377                 if (base->alternate_anims)
 378                         base = base->alternate_anims;
 379         }
 380
 381         if (!base->anim_total)
 382                 return base;
 383
 384         return base->anim_frames[(int)(cl.time*5) % base->anim_total];
 385
 386         /*
 387         original = base;
 388
 389         relative = (int)(cl.time*5) % base->anim_total;
 390
 391         count = 0;
 392         while (base->anim_min > relative || base->anim_max <= relative)
 393         {
 394                 base = base->anim_next;
 395                 if (!base)
 396                 {
 397                         Con_Printf("R_TextureAnimation: broken cycle");
 398                         return original;
 399                 }
 400                 if (++count > 100)
 401                 {
 402                         Con_Printf("R_TextureAnimation: infinite cycle");
 403                         return original;
 404                 }
 405         }
 406
 407         return base;
 408         */
 409 }
 410
 411
 412 /*
 413 =============================================================
 414
 415         BRUSH MODELS
 416
 417 =============================================================
 418 */
 419
 420
 421 float   turbsin[256] =
 422 {
 423         #include "gl_warp_sin.h"
 424 };
 425 #define TURBSCALE (256.0 / (2 * M_PI))
 426
 427
 428 void UploadLightmaps(void)
 429 {
 430         int i;
 431         if (nosubimage || nosubimagefragments)
 432         {
 433                 for (i = 0;i < MAX_LIGHTMAPS;i++)
 434                 {
 435                         if (lightmapupdate[i][0] < lightmapupdate[i][1])
 436                         {
 437                                 if(r_upload.value)
 438                                 {
 439                                         glBindTexture(GL_TEXTURE_2D, lightmap_textures + i);
 440                                         if (nosubimage)
 441                                         {
 442                                                 if (lightmaprgba)
 443                                                         glTexImage2D(GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE, lightmaps[i]);
 444                                                 else
 445                                                         glTexImage2D(GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, lightmaps[i]);
 446                                         }
 447                                         else
 448                                         {
 449                                                 if (lightmaprgba)
 450                                                         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]));
 451                                                 else
 452                                                         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]));
 453                                         }
 454                                 }
 455                         }
 456                         lightmapupdate[i][0] = BLOCK_HEIGHT;
 457                         lightmapupdate[i][1] = 0;
 458                 }
 459         }
 460 }
 461
 462 float   wvert[1024*6]; // used by the following functions
 463
 464 void RSurf_DrawSky(msurface_t *s, int transform)
 465 {
 466         glpoly_t *p;
 467         int i;
 468         float *v;
 469
 470         // LordHavoc: HalfLife maps have freaky skypolys...
 471         if (hlbsp)
 472                 return;
 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                         if (transform)
 481                         {
 482                                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 483                                 {
 484                                         softwaretransform(v, skyvert[currentskyvert].v);
 485                                         currentskyvert++;
 486                                 }
 487                         }
 488                         else
 489                         {
 490                                 for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 491                                 {
 492                                         VectorCopy(v, skyvert[currentskyvert].v);
 493                                         currentskyvert++;
 494                                 }
 495                         }
 496                 }
 497         }
 498 }
 499
 500 int RSurf_Light(int *dlightbits, glpoly_t *polys)
 501 {
 502         float           cr, cg, cb, radius, radius2, f, *v, *wv;
 503         int                     i, a, b, lit = false;
 504         unsigned int c, d;
 505         dlight_t        *light;
 506         vec_t           *lightorigin;
 507         glpoly_t        *p;
 508         for (a = 0;a < 8;a++)
 509         {
 510                 if ((c = dlightbits[a]))
 511                 {
 512                         for (b = 0, d = 1;c;b++, d <<= 1)
 513                         {
 514                                 if (c & d)
 515                                 {
 516                                         c -= d;
 517                                         light = &cl_dlights[a * 32 + b];
 518                                         lightorigin = light->origin;
 519                                         cr = light->color[0];
 520                                         cg = light->color[1];
 521                                         cb = light->color[2];
 522                                         radius = light->radius*light->radius;
 523                                         radius2 = radius * 256.0f;
 524                                         wv = wvert;
 525                                         for (p = polys;p;p = p->next)
 526                                         {
 527                                                 for (i = 0, v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 528                                                 {
 529                                                         f = VectorDistance2(wv, lightorigin);
 530                                                         if (f < radius)
 531                                                         {
 532                                                                 f = radius2 / (f + LIGHTOFFSET);
 533                                                                 wv[3] += cr * f;
 534                                                                 wv[4] += cg * f;
 535                                                                 wv[5] += cb * f;
 536                                                                 lit = true;
 537                                                         }
 538                                                         wv += 6;
 539                                                 }
 540                                         }
 541                                 }
 542                         }
 543                 }
 544         }
 545         return lit;
 546 }
 547
 548 void RSurf_DrawWater(msurface_t *s, texture_t *t, int transform, int alpha)
 549 {
 550         int             i;
 551         float   os = turbsin[(int)(cl.time * TURBSCALE) & 255], ot = turbsin[(int)(cl.time * TURBSCALE + 96.0) & 255];
 552         glpoly_t *p;
 553         float   *v;
 554         // FIXME: make fog texture if water texture is transparent?
 555
 556         if (s->dlightframe != r_framecount)
 557         {
 558                 vec3_t temp;
 559                 // LordHavoc: fast path for no vertex lighting cases
 560                 if (transform)
 561                 {
 562                         if (r_waterripple.value)
 563                         {
 564                                 for (p=s->polys ; p ; p=p->next)
 565                                 {
 566                                         transpolybegin(R_GetTexture(t->texture), R_GetTexture(t->glowtexture), 0, TPOLYTYPE_ALPHA);
 567                                         for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 568                                         {
 569                                                 softwaretransform(v, temp);
 570                                                 transpolyvert(temp[0], temp[1], temp[2] + r_waterripple.value * turbsin[(int)((temp[0]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255] * turbsin[(int)((temp[1]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255] * (1.0f / 64.0f), (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), 128, 128, 128, alpha);
 571                                         }
 572                                         transpolyend();
 573                                 }
 574                         }
 575                         else
 576                         {
 577                                 for (p=s->polys ; p ; p=p->next)
 578                                 {
 579                                         transpolybegin(R_GetTexture(t->texture), R_GetTexture(t->glowtexture), 0, TPOLYTYPE_ALPHA);
 580                                         for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 581                                         {
 582                                                 softwaretransform(v, temp);
 583                                                 transpolyvert(temp[0], temp[1], temp[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), 128, 128, 128, alpha);
 584                                         }
 585                                         transpolyend();
 586                                 }
 587                         }
 588                 }
 589                 else
 590                 {
 591                         if (r_waterripple.value)
 592                         {
 593                                 for (p=s->polys ; p ; p=p->next)
 594                                 {
 595                                         transpolybegin(R_GetTexture(t->texture), R_GetTexture(t->glowtexture), 0, TPOLYTYPE_ALPHA);
 596                                         for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 597                                                 transpolyvert(v[0], v[1], v[2] + r_waterripple.value * turbsin[(int)((v[0]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255] * turbsin[(int)((v[1]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255] * (1.0f / 64.0f), (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), 128, 128, 128, alpha);
 598                                         transpolyend();
 599                                 }
 600                         }
 601                         else
 602                         {
 603                                 for (p=s->polys ; p ; p=p->next)
 604                                 {
 605                                         transpolybegin(R_GetTexture(t->texture), R_GetTexture(t->glowtexture), 0, TPOLYTYPE_ALPHA);
 606                                         for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 607                                                 transpolyvert(v[0], v[1], v[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), 128, 128, 128, alpha);
 608                                         transpolyend();
 609                                 }
 610                         }
 611                 }
 612         }
 613         else
 614         {
 615                 float *wv;
 616                 wv = wvert;
 617                 for (p = s->polys;p;p = p->next)
 618                 {
 619                         for (i = 0, v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 620                         {
 621                                 if (transform)
 622                                         softwaretransform(v, wv);
 623                                 else
 624                                         VectorCopy(v, wv);
 625                                 if (r_waterripple.value)
 626                                         wv[2] += r_waterripple.value * turbsin[(int)((wv[0]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255] * turbsin[(int)((wv[1]*(1.0f/32.0f)+cl.time) * TURBSCALE) & 255] * (1.0f / 64.0f);
 627                                 wv[3] = wv[4] = wv[5] = 128.0f;
 628                                 wv += 6;
 629                         }
 630                 }
 631                 if (s->dlightframe == r_framecount)
 632                         RSurf_Light(s->dlightbits, s->polys);
 633                 wv = wvert;
 634                 for (p=s->polys ; p ; p=p->next)
 635                 {
 636                         transpolybegin(R_GetTexture(t->texture), R_GetTexture(t->glowtexture), 0, TPOLYTYPE_ALPHA);
 637                         for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE, wv += 6)
 638                                 transpolyvert(wv[0], wv[1], wv[2], (v[3] + os) * (1.0f/64.0f), (v[4] + ot) * (1.0f/64.0f), wv[3], wv[4], wv[5], alpha);
 639                         transpolyend();
 640                 }
 641         }
 642 }
 643
 644 void RSurf_DrawWall(msurface_t *s, texture_t *t, int transform)
 645 {
 646         int             i, lit = false, polys = 0, verts = 0;
 647         float   *v;
 648         glpoly_t *p;
 649         wallpoly_t *wp;
 650         wallvert_t *out;
 651         wallvertcolor_t *outcolor;
 652         // check for lightmap modification
 653         if (s->cached_dlight
 654          || (r_dynamic.value && r_dlightmap.value && s->dlightframe == r_framecount)
 655          || r_ambient.value != s->cached_ambient
 656          || lighthalf != s->cached_lighthalf
 657          || (r_dynamic.value
 658          && ((s->styles[0] != 255 && d_lightstylevalue[s->styles[0]] != s->cached_light[0])
 659          || (s->styles[1] != 255 && d_lightstylevalue[s->styles[1]] != s->cached_light[1])
 660          || (s->styles[2] != 255 && d_lightstylevalue[s->styles[2]] != s->cached_light[2])
 661          || (s->styles[3] != 255 && d_lightstylevalue[s->styles[3]] != s->cached_light[3]))))
 662                 R_UpdateLightmap(s, s->lightmaptexturenum);
 663         if (r_dlightmap.value || s->dlightframe != r_framecount)
 664         {
 665                 // LordHavoc: fast path version for no vertex lighting cases
 666                 wp = &wallpoly[currentwallpoly];
 667                 out = &wallvert[currentwallvert];
 668                 for (p = s->polys;p;p = p->next)
 669                 {
 670                         if ((currentwallpoly >= MAX_WALLPOLYS) || (currentwallvert+p->numverts > MAX_WALLVERTS))
 671                                 return;
 672                         wp->texnum = (unsigned short) R_GetTexture(t->texture);
 673                         wp->lighttexnum = (unsigned short) (lightmap_textures + s->lightmaptexturenum);
 674                         wp->glowtexnum = (unsigned short) R_GetTexture(t->glowtexture);
 675                         wp->firstvert = currentwallvert;
 676                         wp->numverts = p->numverts;
 677                         wp->lit = lit;
 678                         wp++;
 679                         currentwallpoly++;
 680                         currentwallvert += p->numverts;
 681                         v = p->verts[0];
 682                         if (transform)
 683                         {
 684                                 for (i = 0;i < p->numverts;i++, v += VERTEXSIZE, out++)
 685                                 {
 686                                         softwaretransform(v, out->vert);
 687                                         out->vert[3] = v[3];
 688                                         out->vert[4] = v[4];
 689                                         out->vert[5] = v[5];
 690                                         out->vert[6] = v[6];
 691                                 }
 692                         }
 693                         else
 694                         {
 695                                 /*
 696                                 for (i = 0;i < p->numverts;i++, v += VERTEXSIZE, out++)
 697                                 {
 698                                         VectorCopy(v, out->vert);
 699                                         out->vert[3] = v[3];
 700                                         out->vert[4] = v[4];
 701                                         out->vert[5] = v[5];
 702                                         out->vert[6] = v[6];
 703                                 }
 704                                 */
 705                                 memcpy(out, v, sizeof(vec_t) * VERTEXSIZE * p->numverts);
 706                                 out += p->numverts;
 707                         }
 708                 }
 709         }
 710         else
 711         {
 712                 float *wv;
 713                 wv = wvert;
 714                 for (p = s->polys;p;p = p->next)
 715                 {
 716                         for (i = 0, v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 717                         {
 718                                 if (transform)
 719                                         softwaretransform(v, wv);
 720                                 else
 721                                         VectorCopy(v, wv);
 722                                 wv[3] = wv[4] = wv[5] = 0.0f;
 723                                 wv += 6;
 724                         }
 725                         verts += p->numverts;
 726                         polys++;
 727                 }
 728                 if ((currentwallpoly + polys > MAX_WALLPOLYS) || (currentwallvert+verts > MAX_WALLVERTS))
 729                         return;
 730                 if ((!r_dlightmap.value) && s->dlightframe == r_framecount)
 731                         lit = RSurf_Light(s->dlightbits, s->polys);
 732                 wv = wvert;
 733                 wp = &wallpoly[currentwallpoly];
 734                 out = &wallvert[currentwallvert];
 735                 outcolor = &wallvertcolor[currentwallvert];
 736                 currentwallpoly += polys;
 737                 for (p = s->polys;p;p = p->next)
 738                 {
 739                         v = p->verts[0];
 740                         wp->texnum = (unsigned short) R_GetTexture(t->texture);
 741                         wp->lighttexnum = (unsigned short) (lightmap_textures + s->lightmaptexturenum);
 742                         wp->glowtexnum = (unsigned short) R_GetTexture(t->glowtexture);
 743                         wp->firstvert = currentwallvert;
 744                         wp->numverts = p->numverts;
 745                         wp->lit = lit;
 746                         wp++;
 747                         currentwallvert += p->numverts;
 748                         for (i = 0;i < p->numverts;i++, v += VERTEXSIZE, wv += 6, out++, outcolor++)
 749                         {
 750                                 if (lit)
 751                                 {
 752                                         if (lighthalf)
 753                                         {
 754                                                 outcolor->r = (byte) (bound(0, (int) wv[3] >> 1, 255));
 755                                                 outcolor->g = (byte) (bound(0, (int) wv[4] >> 1, 255));
 756                                                 outcolor->b = (byte) (bound(0, (int) wv[5] >> 1, 255));
 757                                                 outcolor->a = 255;
 758                                         }
 759                                         else
 760                                         {
 761                                                 outcolor->r = (byte) (bound(0, (int) wv[3], 255));
 762                                                 outcolor->g = (byte) (bound(0, (int) wv[4], 255));
 763                                                 outcolor->b = (byte) (bound(0, (int) wv[5], 255));
 764                                                 outcolor->a = 255;
 765                                         }
 766                                 }
 767                                 out->vert[0] = wv[0];
 768                                 out->vert[1] = wv[1];
 769                                 out->vert[2] = wv[2];
 770                                 out->vert[3] = v[3];
 771                                 out->vert[4] = v[4];
 772                                 out->vert[5] = v[5];
 773                                 out->vert[6] = v[6];
 774                         }
 775                 }
 776         }
 777 }
 778
 779 // LordHavoc: transparent brush models
 780 void RSurf_DrawWallVertex(msurface_t *s, texture_t *t, int transform, int isbmodel)
 781 {
 782         int i, alpha, size3;
 783         float *v, *wv, scale;
 784         glpoly_t *p;
 785         byte *lm;
 786         alpha = (int) (modelalpha * 255.0f);
 787         size3 = ((s->extents[0]>>4)+1)*((s->extents[1]>>4)+1)*3; // *3 for colored lighting
 788         wv = wvert;
 789         for (p = s->polys;p;p = p->next)
 790         {
 791                 for (i = 0, v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE)
 792                 {
 793                         if (transform)
 794                                 softwaretransform(v, wv);
 795                         else
 796                                 VectorCopy(v, wv);
 797                         wv[3] = wv[4] = wv[5] = r_ambient.value * 2.0f;
 798                         if (s->styles[0] != 255)
 799                         {
 800                                 lm = (byte *)((long) s->samples + (int) v[7]);
 801                                 scale = d_lightstylevalue[s->styles[0]] * (1.0f / 128.0f);wv[3] += lm[size3*0+0] * scale;wv[4] += lm[size3*0+1] * scale;wv[5] += lm[size3*0+2] * scale;
 802                                 if (s->styles[1] != 255)
 803                                 {
 804                                         scale = d_lightstylevalue[s->styles[1]] * (1.0f / 128.0f);wv[3] += lm[size3*1+0] * scale;wv[4] += lm[size3*1+1] * scale;wv[5] += lm[size3*1+2] * scale;
 805                                         if (s->styles[2] != 255)
 806                                         {
 807                                                 scale = d_lightstylevalue[s->styles[2]] * (1.0f / 128.0f);wv[3] += lm[size3*2+0] * scale;wv[4] += lm[size3*2+1] * scale;wv[5] += lm[size3*2+2] * scale;
 808                                                 if (s->styles[3] != 255)
 809                                                 {
 810                                                         scale = d_lightstylevalue[s->styles[3]] * (1.0f / 128.0f);wv[3] += lm[size3*3+0] * scale;wv[4] += lm[size3*3+1] * scale;wv[5] += lm[size3*3+2] * scale;
 811                                                 }
 812                                         }
 813                                 }
 814                         }
 815                         wv += 6;
 816                 }
 817         }
 818         if (s->dlightframe == r_framecount)
 819                 RSurf_Light(s->dlightbits, s->polys);
 820         wv = wvert;
 821         if (isbmodel && (currententity->render.colormod[0] != 1 || currententity->render.colormod[1] != 1 || currententity->render.colormod[2] != 1))
 822         {
 823                 for (p = s->polys;p;p = p->next)
 824                 {
 825                         v = p->verts[0];
 826                         transpolybegin(R_GetTexture(t->texture), R_GetTexture(t->glowtexture), 0, currententity->render.effects & EF_ADDITIVE ? TPOLYTYPE_ADD : TPOLYTYPE_ALPHA);
 827                         for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE, wv += 6)
 828                                 transpolyvert(wv[0], wv[1], wv[2], v[3], v[4], wv[3] * currententity->render.colormod[0], wv[4] * currententity->render.colormod[1], wv[5] * currententity->render.colormod[2], alpha);
 829                         transpolyend();
 830                 }
 831         }
 832         else
 833         {
 834                 for (p = s->polys;p;p = p->next)
 835                 {
 836                         v = p->verts[0];
 837                         transpolybegin(R_GetTexture(t->texture), R_GetTexture(t->glowtexture), 0, currententity->render.effects & EF_ADDITIVE ? TPOLYTYPE_ADD : TPOLYTYPE_ALPHA);
 838                         for (i = 0,v = p->verts[0];i < p->numverts;i++, v += VERTEXSIZE, wv += 6)
 839                                 transpolyvert(wv[0], wv[1], wv[2], v[3], v[4], wv[3], wv[4], wv[5], alpha);
 840                         transpolyend();
 841                 }
 842         }
 843 }
 844
 845 void R_NoVisMarkLights (vec3_t lightorigin, dlight_t *light, int bit, int bitindex, model_t *model);
 846
 847 /*
 848 =================
 849 R_DrawBrushModel
 850 =================
 851 */
 852 void R_DrawBrushModel (entity_t *e)
 853 {
 854         int                     i;
 855         vec3_t          mins, maxs;
 856         msurface_t      *s;
 857         model_t         *clmodel;
 858         int     rotated, vertexlit = false;
 859         vec3_t          org;
 860
 861         currententity = e;
 862
 863         clmodel = e->render.model;
 864
 865         if (e->render.angles[0] || e->render.angles[1] || e->render.angles[2])
 866         {
 867                 rotated = true;
 868                 for (i=0 ; i<3 ; i++)
 869                 {
 870                         mins[i] = e->render.origin[i] - clmodel->radius;
 871                         maxs[i] = e->render.origin[i] + clmodel->radius;
 872                 }
 873         }
 874         else
 875         {
 876                 rotated = false;
 877                 VectorAdd (e->render.origin, clmodel->mins, mins);
 878                 VectorAdd (e->render.origin, clmodel->maxs, maxs);
 879         }
 880
 881         if (R_VisibleCullBox (mins, maxs))
 882                 return;
 883
 884         c_bmodels++;
 885
 886         VectorSubtract (r_origin, e->render.origin, modelorg);
 887         if (rotated)
 888         {
 889                 vec3_t  temp;
 890                 vec3_t  forward, right, up;
 891
 892                 VectorCopy (modelorg, temp);
 893                 AngleVectors (e->render.angles, forward, right, up);
 894                 modelorg[0] = DotProduct (temp, forward);
 895                 modelorg[1] = -DotProduct (temp, right);
 896                 modelorg[2] = DotProduct (temp, up);
 897         }
 898
 899         for (i = 0, s = &clmodel->surfaces[clmodel->firstmodelsurface];i < clmodel->nummodelsurfaces;i++, s++)
 900         {
 901                 if (((s->flags & SURF_PLANEBACK) == 0) == (PlaneDiff(modelorg, s->plane) >= 0))
 902                         s->visframe = r_framecount;
 903                 else
 904                         s->visframe = -1;
 905         }
 906
 907 // calculate dynamic lighting for bmodel if it's not an
 908 // instanced model
 909         for (i = 0;i < MAX_DLIGHTS;i++)
 910         {
 911                 if (!cl_dlights[i].radius)
 912                         continue;
 913
 914                 VectorSubtract(cl_dlights[i].origin, currententity->render.origin, org);
 915                 R_NoVisMarkLights (org, &cl_dlights[i], 1<<(i&31), i >> 5, clmodel);
 916         }
 917         vertexlit = modelalpha != 1 || clmodel->firstmodelsurface == 0 || (currententity->render.effects & EF_FULLBRIGHT) || currententity->render.colormod[0] != 1 || currententity->render.colormod[2] != 1 || currententity->render.colormod[2] != 1;
 918
 919         e->render.angles[0] = -e->render.angles[0];     // stupid quake bug
 920         softwaretransformforentity (e);
 921         e->render.angles[0] = -e->render.angles[0];     // stupid quake bug
 922
 923         // draw texture
 924         for (i = 0, s = &clmodel->surfaces[clmodel->firstmodelsurface];i < clmodel->nummodelsurfaces;i++, s++)
 925         {
 926                 if (s->visframe == r_framecount)
 927                 {
 928 //                      R_DrawSurf(s, true, vertexlit || s->texinfo->texture->transparent);
 929                         if (s->flags & (SURF_DRAWSKY | SURF_DRAWTURB))
 930                         {
 931                                 // sky and liquid don't need sorting (skypoly/transpoly)
 932                                 if (s->flags & SURF_DRAWSKY)
 933                                         RSurf_DrawSky(s, true);
 934                                 else
 935                                         RSurf_DrawWater(s, R_TextureAnimation(s->texinfo->texture), true, s->flags & SURF_DRAWNOALPHA ? 255 : wateralpha);
 936                         }
 937                         else
 938                         {
 939                                 texture_t *t = R_TextureAnimation(s->texinfo->texture);
 940                                 if (vertexlit || s->texinfo->texture->transparent)
 941                                         RSurf_DrawWallVertex(s, t, true, true);
 942                                 else
 943                                         RSurf_DrawWall(s, t, true);
 944                         }
 945                 }
 946         }
 947         UploadLightmaps();
 948 }
 949
 950 /*
 951 =============================================================
 952
 953         WORLD MODEL
 954
 955 =============================================================
 956 */
 957
 958 static byte *worldvis;
 959
 960 void R_MarkLeaves (void)
 961 {
 962         static float noviscache;
 963         if (r_oldviewleaf == r_viewleaf && noviscache == r_novis.value)
 964                 return;
 965
 966         r_oldviewleaf = r_viewleaf;
 967         noviscache = r_novis.value;
 968
 969         worldvis = Mod_LeafPVS (r_viewleaf, cl.worldmodel);
 970 }
 971
 972 void R_SolidWorldNode (void)
 973 {
 974         int l;
 975         mleaf_t *leaf;
 976         msurface_t *surf, **mark, **endmark;
 977
 978         for (l = 0, leaf = cl.worldmodel->leafs;l < cl.worldmodel->numleafs;l++, leaf++)
 979         {
 980                 if (leaf->nummarksurfaces)
 981                 {
 982                         if (R_CullBox(leaf->mins, leaf->maxs))
 983                                 continue;
 984
 985                         c_leafs++;
 986
 987                         leaf->visframe = r_framecount;
 988
 989                         if (leaf->nummarksurfaces)
 990                         {
 991                                 mark = leaf->firstmarksurface;
 992                                 endmark = mark + leaf->nummarksurfaces;
 993                                 do
 994                                 {
 995                                         surf = *mark++;
 996                                         // make sure surfaces are only processed once
 997                                         if (surf->worldnodeframe == r_framecount)
 998                                                 continue;
 999                                         surf->worldnodeframe = r_framecount;
1000                                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1001                                         {
1002                                                 if (surf->flags & SURF_PLANEBACK)
1003                                                         surf->visframe = r_framecount;
1004                                         }
1005                                         else
1006                                         {
1007                                                 if (!(surf->flags & SURF_PLANEBACK))
1008                                                         surf->visframe = r_framecount;
1009                                         }
1010                                 }
1011                                 while (mark < endmark);
1012                         }
1013                 }
1014         }
1015 }
1016
1017 /*
1018 // experimental and inferior to the other in recursion depth allowances
1019 void R_PortalWorldNode (void)
1020 {
1021         int i, j;
1022         mportal_t *p;
1023         msurface_t *surf, **mark, **endmark;
1024         mleaf_t *leaf, *llistbuffer[8192], **l, **llist;
1025
1026         leaf = r_viewleaf;
1027         leaf->worldnodeframe = r_framecount;
1028         l = llist = &llistbuffer[0];
1029         *llist++ = r_viewleaf;
1030         while (l < llist)
1031         {
1032                 leaf = *l++;
1033
1034                 c_leafs++;
1035
1036                 leaf->visframe = r_framecount;
1037
1038                 if (leaf->nummarksurfaces)
1039                 {
1040                         mark = leaf->firstmarksurface;
1041                         endmark = mark + leaf->nummarksurfaces;
1042                         do
1043                         {
1044                                 surf = *mark++;
1045                                 // make sure surfaces are only processed once
1046                                 if (surf->worldnodeframe == r_framecount)
1047                                         continue;
1048                                 surf->worldnodeframe = r_framecount;
1049                                 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1050                                 {
1051                                         if (surf->flags & SURF_PLANEBACK)
1052                                                 surf->visframe = r_framecount;
1053                                 }
1054                                 else
1055                                 {
1056                                         if (!(surf->flags & SURF_PLANEBACK))
1057                                                 surf->visframe = r_framecount;
1058                                 }
1059                         }
1060                         while (mark < endmark);
1061                 }
1062
1063                 // follow portals into other leafs
1064                 p = leaf->portals;
1065                 for (;p;p = p->next)
1066                 {
1067                         leaf = p->past;
1068                         if (leaf->worldnodeframe != r_framecount)
1069                         {
1070                                 leaf->worldnodeframe = r_framecount;
1071                                 i = (leaf - cl.worldmodel->leafs) - 1;
1072                                 if ((worldvis[i>>3] & (1<<(i&7))) && R_NotCulledBox(leaf->mins, leaf->maxs))
1073                                         *llist++ = leaf;
1074                         }
1075                 }
1076         }
1077
1078         i = 0;
1079         j = 0;
1080         p = r_viewleaf->portals;
1081         for (;p;p = p->next)
1082         {
1083                 j++;
1084                 if (p->past->worldnodeframe != r_framecount)
1085                         i++;
1086         }
1087         if (i)
1088                 Con_Printf("%i portals of viewleaf (%i portals) were not checked\n", i, j);
1089 }
1090 */
1091
1092 void R_PortalWorldNode (void)
1093 {
1094         int portalstack, i;
1095         mportal_t *p, *pstack[8192];
1096         msurface_t *surf, **mark, **endmark;
1097         mleaf_t *leaf;
1098
1099         leaf = r_viewleaf;
1100         leaf->worldnodeframe = r_framecount;
1101         portalstack = 0;
1102 loc0:
1103         c_leafs++;
1104
1105         leaf->visframe = r_framecount;
1106
1107         if (leaf->nummarksurfaces)
1108         {
1109                 mark = leaf->firstmarksurface;
1110                 endmark = mark + leaf->nummarksurfaces;
1111                 do
1112                 {
1113                         surf = *mark++;
1114                         // make sure surfaces are only processed once
1115                         if (surf->worldnodeframe == r_framecount)
1116                                 continue;
1117                         surf->worldnodeframe = r_framecount;
1118                         if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1119                         {
1120                                 if (surf->flags & SURF_PLANEBACK)
1121                                         surf->visframe = r_framecount;
1122                         }
1123                         else
1124                         {
1125                                 if (!(surf->flags & SURF_PLANEBACK))
1126                                         surf->visframe = r_framecount;
1127                         }
1128                 }
1129                 while (mark < endmark);
1130         }
1131
1132         // follow portals into other leafs
1133         p = leaf->portals;
1134         for (;p;p = p->next)
1135         {
1136                 leaf = p->past;
1137                 if (leaf->worldnodeframe != r_framecount)
1138                 {
1139                         leaf->worldnodeframe = r_framecount;
1140                         if (leaf->contents != CONTENTS_SOLID)
1141                         {
1142                                 i = (leaf - cl.worldmodel->leafs) - 1;
1143                                 if (worldvis[i>>3] & (1<<(i&7)))
1144                                 {
1145                                         if (R_NotCulledBox(leaf->mins, leaf->maxs))
1146                                         {
1147                                                 pstack[portalstack++] = p;
1148                                                 goto loc0;
1149
1150 loc1:
1151                                                 p = pstack[--portalstack];
1152                                         }
1153                                 }
1154                         }
1155                 }
1156         }
1157
1158         if (portalstack)
1159                 goto loc1;
1160
1161         i = 0;
1162         portalstack = 0;
1163         p = r_viewleaf->portals;
1164         for (;p;p = p->next)
1165         {
1166                 portalstack++;
1167                 if (p->past->worldnodeframe != r_framecount)
1168                         i++;
1169         }
1170         if (i)
1171                 Con_Printf("%i portals of viewleaf (%i portals) were not checked\n", i, portalstack);
1172 }
1173
1174 void R_DrawSurfaces (void)
1175 {
1176         msurface_t      *surf, *endsurf;
1177         texture_t       *t;
1178         int vertex = gl_vertex.value;
1179
1180         surf = &cl.worldmodel->surfaces[cl.worldmodel->firstmodelsurface];
1181         endsurf = surf + cl.worldmodel->nummodelsurfaces;
1182         for (;surf < endsurf;surf++)
1183         {
1184                 if (surf->visframe == r_framecount)
1185                 {
1186                         c_faces++;
1187                         if (surf->flags & (SURF_DRAWSKY | SURF_DRAWTURB))
1188                         {
1189                                 // sky and liquid don't need sorting (skypoly/transpoly)
1190                                 if (surf->flags & SURF_DRAWSKY)
1191                                         RSurf_DrawSky(surf, false);
1192                                 else
1193                                         RSurf_DrawWater(surf, R_TextureAnimation(surf->texinfo->texture), false, surf->flags & SURF_DRAWNOALPHA ? 255 : wateralpha);
1194                         }
1195                         else
1196                         {
1197                                 t = R_TextureAnimation(surf->texinfo->texture);
1198                                 if (vertex)
1199                                         RSurf_DrawWallVertex(surf, t, false, false);
1200                                 else
1201                                         RSurf_DrawWall(surf, t, false);
1202                         }
1203                 }
1204         }
1205 }
1206
1207 void R_DrawPortals(void)
1208 {
1209         int drawportals, i, r, g, b;
1210         mleaf_t *leaf, *endleaf;
1211         mportal_t *portal;
1212         mvertex_t *point, *endpoint;
1213         drawportals = (int)r_drawportals.value;
1214         if (drawportals < 1)
1215                 return;
1216         leaf = cl.worldmodel->leafs;
1217         endleaf = leaf + cl.worldmodel->numleafs;
1218         for (;leaf < endleaf;leaf++)
1219         {
1220                 if (leaf->visframe == r_framecount && leaf->portals)
1221                 {
1222                         i = leaf - cl.worldmodel->leafs;
1223                         r = (i & 0x0007) << 5;
1224                         g = (i & 0x0038) << 2;
1225                         b = (i & 0x01C0) >> 1;
1226                         portal = leaf->portals;
1227                         while (portal)
1228                         {
1229                                 transpolybegin(0, 0, 0, TPOLYTYPE_ALPHA);
1230                                 point = portal->points + portal->numpoints - 1;
1231                                 endpoint = portal->points;
1232                                 for (;point >= endpoint;point--)
1233                                         transpolyvertub(point->position[0], point->position[1], point->position[2], 0, 0, r, g, b, 32);
1234                                 transpolyend();
1235                                 portal = portal->next;
1236                         }
1237                 }
1238         }
1239 }
1240
1241 /*
1242 =============
1243 R_DrawWorld
1244 =============
1245 */
1246 void R_DrawWorld (void)
1247 {
1248         entity_t        ent;
1249
1250         wateralpha = bound(0, r_wateralpha.value*255.0f, 255);
1251
1252         memset (&ent, 0, sizeof(ent));
1253         ent.render.model = cl.worldmodel;
1254         ent.render.colormod[0] = ent.render.colormod[1] = ent.render.colormod[2] = 1;
1255         modelalpha = ent.render.alpha = 1;
1256         ent.render.scale = 1;
1257
1258         VectorCopy (r_origin, modelorg);
1259
1260         currententity = &ent;
1261
1262         softwaretransformidentity(); // LordHavoc: clear transform
1263
1264         if (cl.worldmodel)
1265         {
1266                 if (r_viewleaf->contents == CONTENTS_SOLID)
1267                         R_SolidWorldNode ();
1268                 else
1269                 {
1270                         R_MarkLeaves ();
1271                         R_PortalWorldNode ();
1272                 }
1273         }
1274
1275         R_PushDlights (); // now mark the lit surfaces
1276
1277         R_DrawSurfaces ();
1278
1279         R_DrawPortals ();
1280 }
1281
1282 /*
1283 =============================================================================
1284
1285   LIGHTMAP ALLOCATION
1286
1287 =============================================================================
1288 */
1289
1290 // returns a texture number and the position inside it
1291 int AllocBlock (int w, int h, short *x, short *y)
1292 {
1293         int             i, j;
1294         int             best, best2;
1295         int             texnum;
1296
1297         for (texnum = 0;texnum < MAX_LIGHTMAPS;texnum++)
1298         {
1299                 best = BLOCK_HEIGHT;
1300
1301                 for (i = 0;i < BLOCK_WIDTH - w;i += lightmapalign) // LordHavoc: NVIDIA has broken subimage, so align the lightmaps
1302                 {
1303                         best2 = 0;
1304
1305                         for (j=0 ; j<w ; j++)
1306                         {
1307                                 if (allocated[texnum][i+j] >= best)
1308                                         break;
1309                                 if (allocated[texnum][i+j] > best2)
1310                                         best2 = allocated[texnum][i+j];
1311                         }
1312                         if (j == w)
1313                         {       // this is a valid spot
1314                                 *x = i;
1315                                 *y = best = best2;
1316                         }
1317                 }
1318
1319                 if (best + h > BLOCK_HEIGHT)
1320                         continue;
1321
1322                 if (nosubimagefragments || nosubimage)
1323                 {
1324                         if (!lightmaps[texnum])
1325                         {
1326                                 lightmaps[texnum] = qmalloc(BLOCK_WIDTH*BLOCK_HEIGHT*4);
1327                                 memset(lightmaps[texnum], 0, BLOCK_WIDTH*BLOCK_HEIGHT*4);
1328                         }
1329                 }
1330                 // LordHavoc: clear texture to blank image, fragments are uploaded using subimage
1331                 else if (!allocated[texnum][0])
1332                 {
1333                         byte blank[BLOCK_WIDTH*BLOCK_HEIGHT*4];
1334                         memset(blank, 0, sizeof(blank));
1335                         if(r_upload.value)
1336                         {
1337                                 glBindTexture(GL_TEXTURE_2D, lightmap_textures + texnum);
1338                                 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
1339                                 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
1340                                 if (lightmaprgba)
1341                                         glTexImage2D (GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE, blank);
1342                                 else
1343                                         glTexImage2D (GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, blank);
1344                         }
1345                 }
1346
1347                 for (i = 0;i < w;i++)
1348                         allocated[texnum][*x + i] = best + h;
1349
1350                 return texnum;
1351         }
1352
1353         Host_Error ("AllocBlock: full, unable to find room for %i by %i lightmap", w, h);
1354         return 0;
1355 }
1356
1357
1358 mvertex_t       *r_pcurrentvertbase;
1359 model_t         *currentmodel;
1360
1361 int     nColinElim;
1362
1363 /*
1364 ================
1365 BuildSurfaceDisplayList
1366 ================
1367 */
1368 void BuildSurfaceDisplayList (msurface_t *fa)
1369 {
1370         int                     i, j, lindex, lnumverts;
1371         medge_t         *pedges, *r_pedge;
1372         int                     vertpage;
1373         float           *vec;
1374         float           s, t;
1375         glpoly_t        *poly;
1376
1377 // reconstruct the polygon
1378         pedges = currentmodel->edges;
1379         lnumverts = fa->numedges;
1380         vertpage = 0;
1381
1382         //
1383         // draw texture
1384         //
1385         poly = Hunk_AllocName (sizeof(glpoly_t) + (lnumverts-4) * VERTEXSIZE*sizeof(float), "surfaces");
1386         poly->next = fa->polys;
1387         poly->flags = fa->flags;
1388         fa->polys = poly;
1389         poly->numverts = lnumverts;
1390
1391         for (i=0 ; i<lnumverts ; i++)
1392         {
1393                 lindex = currentmodel->surfedges[fa->firstedge + i];
1394
1395                 if (lindex > 0)
1396                 {
1397                         r_pedge = &pedges[lindex];
1398                         vec = r_pcurrentvertbase[r_pedge->v[0]].position;
1399                 }
1400                 else
1401                 {
1402                         r_pedge = &pedges[-lindex];
1403                         vec = r_pcurrentvertbase[r_pedge->v[1]].position;
1404                 }
1405                 s = DotProduct (vec, fa->texinfo->vecs[0]) + fa->texinfo->vecs[0][3];
1406                 t = DotProduct (vec, fa->texinfo->vecs[1]) + fa->texinfo->vecs[1][3];
1407
1408                 VectorCopy (vec, poly->verts[i]);
1409                 poly->verts[i][3] = s / fa->texinfo->texture->width;
1410                 poly->verts[i][4] = t / fa->texinfo->texture->height;
1411
1412                 //
1413                 // lightmap texture coordinates
1414                 //
1415                 s -= fa->texturemins[0];
1416                 t -= fa->texturemins[1];
1417                 s += 8;
1418                 t += 8;
1419                 // LordHavoc: calc lightmap data offset
1420                 j = (bound(0l, (int)t>>4, fa->extents[1]>>4) * ((fa->extents[0]>>4)+1) + bound(0l, (int)s>>4, fa->extents[0]>>4)) * 3;
1421                 poly->verts[i][7] = j;
1422                 s += fa->light_s*16;
1423                 s /= BLOCK_WIDTH*16; //fa->texinfo->texture->width;
1424
1425                 t += fa->light_t*16;
1426                 t /= BLOCK_HEIGHT*16; //fa->texinfo->texture->height;
1427
1428                 poly->verts[i][5] = s;
1429                 poly->verts[i][6] = t;
1430         }
1431
1432         //
1433         // remove co-linear points - Ed
1434         //
1435         /*
1436         if (!gl_keeptjunctions.value)
1437         {
1438                 for (i = 0 ; i < lnumverts ; ++i)
1439                 {
1440                         vec3_t v1, v2;
1441                         float *prev, *this, *next;
1442
1443                         prev = poly->verts[(i + lnumverts - 1) % lnumverts];
1444                         this = poly->verts[i];
1445                         next = poly->verts[(i + 1) % lnumverts];
1446
1447                         VectorSubtract( this, prev, v1 );
1448                         VectorNormalize( v1 );
1449                         VectorSubtract( next, prev, v2 );
1450                         VectorNormalize( v2 );
1451
1452                         // skip co-linear points
1453                         #define COLINEAR_EPSILON 0.001
1454                         if ((fabs( v1[0] - v2[0] ) <= COLINEAR_EPSILON) &&
1455                                 (fabs( v1[1] - v2[1] ) <= COLINEAR_EPSILON) &&
1456                                 (fabs( v1[2] - v2[2] ) <= COLINEAR_EPSILON))
1457                         {
1458                                 int j;
1459                                 for (j = i + 1; j < lnumverts; ++j)
1460                                 {
1461                                         int k;
1462                                         for (k = 0; k < VERTEXSIZE; ++k)
1463                                                 poly->verts[j - 1][k] = poly->verts[j][k];
1464                                 }
1465                                 --lnumverts;
1466                                 ++nColinElim;
1467                                 // retry next vertex next time, which is now current vertex
1468                                 --i;
1469                         }
1470                 }
1471         }
1472         */
1473         poly->numverts = lnumverts;
1474 }
1475
1476 /*
1477 ========================
1478 GL_CreateSurfaceLightmap
1479 ========================
1480 */
1481 void GL_CreateSurfaceLightmap (msurface_t *surf)
1482 {
1483         int             smax, tmax;
1484
1485         if (surf->flags & (SURF_DRAWSKY|SURF_DRAWTURB))
1486                 return;
1487
1488         smax = (surf->extents[0]>>4)+1;
1489         tmax = (surf->extents[1]>>4)+1;
1490
1491         surf->lightmaptexturenum = AllocBlock (smax, tmax, &surf->light_s, &surf->light_t);
1492         if (nosubimage || nosubimagefragments)
1493                 return;
1494         glBindTexture(GL_TEXTURE_2D, lightmap_textures + surf->lightmaptexturenum);
1495         smax = ((surf->extents[0]>>4)+lightmapalign) & lightmapalignmask;
1496         if (lightmaprgba)
1497         {
1498                 R_BuildLightMap (surf, templight, smax * 4);
1499                 if(r_upload.value)
1500                         glTexSubImage2D(GL_TEXTURE_2D, 0, surf->light_s, surf->light_t, smax, tmax, GL_RGBA, GL_UNSIGNED_BYTE, templight);
1501         }
1502         else
1503         {
1504                 R_BuildLightMap (surf, templight, smax * 3);
1505                 if(r_upload.value)
1506                         glTexSubImage2D(GL_TEXTURE_2D, 0, surf->light_s, surf->light_t, smax, tmax, GL_RGB , GL_UNSIGNED_BYTE, templight);
1507         }
1508 }
1509
1510
1511 /*
1512 ==================
1513 GL_BuildLightmaps
1514
1515 Builds the lightmap texture
1516 with all the surfaces from all brush models
1517 ==================
1518 */
1519 void GL_BuildLightmaps (void)
1520 {
1521         int             i, j;
1522         model_t *m;
1523
1524         memset (allocated, 0, sizeof(allocated));
1525
1526         r_framecount = 1;               // no dlightcache
1527
1528         if (gl_nosubimagefragments.value)
1529                 nosubimagefragments = 1;
1530         else
1531                 nosubimagefragments = 0;
1532
1533         if (gl_nosubimage.value)
1534                 nosubimage = 1;
1535         else
1536                 nosubimage = 0;
1537
1538         if (gl_lightmaprgba.value)
1539         {
1540                 lightmaprgba = true;
1541                 lightmapbytes = 4;
1542         }
1543         else
1544         {
1545                 lightmaprgba = false;
1546                 lightmapbytes = 3;
1547         }
1548
1549         // LordHavoc: NVIDIA seems to have a broken glTexSubImage2D,
1550         //            it needs to be aligned on 4 pixel boundaries...
1551         //            so I implemented an adjustable lightmap alignment
1552         if (gl_lightmapalign.value < 1)
1553                 gl_lightmapalign.value = 1;
1554         if (gl_lightmapalign.value > 16)
1555                 gl_lightmapalign.value = 16;
1556         lightmapalign = 1;
1557         while (lightmapalign < gl_lightmapalign.value)
1558                 lightmapalign <<= 1;
1559         gl_lightmapalign.value = lightmapalign;
1560         lightmapalignmask = ~(lightmapalign - 1);
1561         if (nosubimagefragments || nosubimage)
1562         {
1563                 lightmapalign = 1;
1564                 lightmapalignmask = ~0;
1565         }
1566
1567         if (!lightmap_textures)
1568                 lightmap_textures = R_GetTextureSlots(MAX_LIGHTMAPS);
1569
1570         for (j=1 ; j<MAX_MODELS ; j++)
1571         {
1572                 m = cl.model_precache[j];
1573                 if (!m)
1574                         break;
1575                 if (m->name[0] == '*')
1576                         continue;
1577                 r_pcurrentvertbase = m->vertexes;
1578                 currentmodel = m;
1579                 for (i=0 ; i<m->numsurfaces ; i++)
1580                 {
1581                         if ( m->surfaces[i].flags & SURF_DRAWTURB )
1582                                 continue;
1583                         if ( m->surfaces[i].flags & SURF_DRAWSKY )
1584                                 continue;
1585                         GL_CreateSurfaceLightmap (m->surfaces + i);
1586                         BuildSurfaceDisplayList (m->surfaces + i);
1587                 }
1588         }
1589
1590         if (nosubimage || nosubimagefragments)
1591         {
1592                 if(r_upload.value)
1593                         if (gl_mtexable)
1594                                 qglSelectTexture(gl_mtex_enum+1);
1595                 for (i = 0;i < MAX_LIGHTMAPS;i++)
1596                 {
1597                         if (!allocated[i][0])
1598                                 break;
1599                         lightmapupdate[i][0] = BLOCK_HEIGHT;
1600                         lightmapupdate[i][1] = 0;
1601                         if(r_upload.value)
1602                         {
1603                                 glBindTexture(GL_TEXTURE_2D, lightmap_textures + i);
1604                                 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
1605                                 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
1606                                 if (lightmaprgba)
1607                                         glTexImage2D(GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE, lightmaps[i]);
1608                                 else
1609                                         glTexImage2D(GL_TEXTURE_2D, 0, 3, BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, lightmaps[i]);
1610                         }
1611                 }
1612                 if(r_upload.value)
1613                         if (gl_mtexable)
1614                                 qglSelectTexture(gl_mtex_enum+0);
1615         }
1616 }
1617