tools/quake3/q3map2/lightmaps_ydnar.c

   1 /* -------------------------------------------------------------------------------
   2
   3 Copyright (C) 1999-2007 id Software, Inc. and contributors.
   4 For a list of contributors, see the accompanying CONTRIBUTORS file.
   5
   6 This file is part of GtkRadiant.
   7
   8 GtkRadiant is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2 of the License, or
  11 (at your option) any later version.
  12
  13 GtkRadiant is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GtkRadiant; if not, write to the Free Software
  20 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21
  22 ----------------------------------------------------------------------------------
  23
  24 This code has been altered significantly from its original form, to support
  25 several games based on the Quake III Arena engine, in the form of "Q3Map2."
  26
  27 ------------------------------------------------------------------------------- */
  28
  29
  30
  31 /* marker */
  32 #define LIGHTMAPS_YDNAR_C
  33
  34
  35
  36 /* dependencies */
  37 #include "q3map2.h"
  38
  39
  40
  41
  42 /* -------------------------------------------------------------------------------
  43
  44 this file contains code that doe lightmap allocation and projection that
  45 runs in the -light phase.
  46
  47 this is handled here rather than in the bsp phase for a few reasons--
  48 surfaces are no longer necessarily convex polygons, patches may or may not be
  49 planar or have lightmaps projected directly onto control points.
  50
  51 also, this allows lightmaps to be calculated before being allocated and stored
  52 in the bsp. lightmaps that have little high-frequency information are candidates
  53 for having their resolutions scaled down.
  54
  55 ------------------------------------------------------------------------------- */
  56
  57 /*
  58 WriteTGA24()
  59 based on WriteTGA() from imagelib.c
  60 */
  61
  62 void WriteTGA24( char *filename, byte *data, int width, int height, qboolean flip )
  63 {
  64         int             i, c;
  65         byte    *buffer, *in;
  66         FILE    *file;
  67
  68
  69         /* allocate a buffer and set it up */
  70         buffer = safe_malloc( width * height * 3 + 18 );
  71         memset( buffer, 0, 18 );
  72         buffer[ 2 ] = 2;
  73         buffer[ 12 ] = width & 255;
  74         buffer[ 13 ] = width >> 8;
  75         buffer[ 14 ] = height & 255;
  76         buffer[ 15 ] = height >> 8;
  77         buffer[ 16 ] = 24;
  78
  79         /* swap rgb to bgr */
  80         c = (width * height * 3) + 18;
  81         for( i = 18; i < c; i += 3 )
  82         {
  83                 buffer[ i ] = data[ i - 18 + 2 ];               /* blue */
  84                 buffer[ i + 1 ] = data[ i - 18 + 1 ];   /* green */
  85                 buffer[ i + 2 ] = data[ i - 18 + 0 ];   /* red */
  86         }
  87
  88         /* write it and free the buffer */
  89         file = fopen( filename, "wb" );
  90         if( file == NULL )
  91                 Error( "Unable to open %s for writing", filename );
  92
  93         /* flip vertically? */
  94         if( flip )
  95         {
  96                 fwrite( buffer, 1, 18, file );
  97                 for( in = buffer + ((height - 1) * width * 3) + 18; in >= buffer; in -= (width * 3) )
  98                         fwrite( in, 1, (width * 3), file );
  99         }
 100         else
 101                 fwrite( buffer, 1, c, file );
 102
 103         /* close the file */
 104         fclose( file );
 105         free( buffer );
 106 }
 107
 108
 109
 110 /*
 111 ExportLightmaps()
 112 exports the lightmaps as a list of numbered tga images
 113 */
 114
 115 void ExportLightmaps( void )
 116 {
 117         int                     i;
 118         char            dirname[ 1024 ], filename[ 1024 ];
 119         byte            *lightmap;
 120
 121
 122         /* note it */
 123         Sys_FPrintf( SYS_VRB, "--- ExportLightmaps ---\n");
 124
 125         /* do some path mangling */
 126         strcpy( dirname, source );
 127         StripExtension( dirname );
 128
 129         /* sanity check */
 130         if( bspLightBytes == NULL )
 131         {
 132                 Sys_Printf( "WARNING: No BSP lightmap data\n" );
 133                 return;
 134         }
 135
 136         /* make a directory for the lightmaps */
 137         Q_mkdir( dirname );
 138
 139         /* iterate through the lightmaps */
 140         for( i = 0, lightmap = bspLightBytes; lightmap < (bspLightBytes + numBSPLightBytes); i++, lightmap += (game->lightmapSize * game->lightmapSize * 3) )
 141         {
 142                 /* write a tga image out */
 143                 sprintf( filename, "%s/lightmap_%04d.tga", dirname, i );
 144                 Sys_Printf( "Writing %s\n", filename );
 145                 WriteTGA24( filename, lightmap, game->lightmapSize, game->lightmapSize, qfalse );
 146         }
 147 }
 148
 149
 150
 151 /*
 152 ExportLightmapsMain()
 153 exports the lightmaps as a list of numbered tga images
 154 */
 155
 156 int ExportLightmapsMain( int argc, char **argv )
 157 {
 158         /* arg checking */
 159         if( argc < 1 )
 160         {
 161                 Sys_Printf( "Usage: q3map -export [-v] <mapname>\n" );
 162                 return 0;
 163         }
 164
 165         /* do some path mangling */
 166         strcpy( source, ExpandArg( argv[ argc - 1 ] ) );
 167         StripExtension( source );
 168         DefaultExtension( source, ".bsp" );
 169
 170         /* load the bsp */
 171         Sys_Printf( "Loading %s\n", source );
 172         LoadBSPFile( source );
 173
 174         /* export the lightmaps */
 175         ExportLightmaps();
 176
 177         /* return to sender */
 178         return 0;
 179 }
 180
 181
 182
 183 /*
 184 ImportLightmapsMain()
 185 imports the lightmaps from a list of numbered tga images
 186 */
 187
 188 int ImportLightmapsMain( int argc, char **argv )
 189 {
 190         int                     i, x, y, len, width, height;
 191         char            dirname[ 1024 ], filename[ 1024 ];
 192         byte            *lightmap, *buffer, *pixels, *in, *out;
 193
 194
 195         /* arg checking */
 196         if( argc < 1 )
 197         {
 198                 Sys_Printf( "Usage: q3map -import [-v] <mapname>\n" );
 199                 return 0;
 200         }
 201
 202         /* do some path mangling */
 203         strcpy( source, ExpandArg( argv[ argc - 1 ] ) );
 204         StripExtension( source );
 205         DefaultExtension( source, ".bsp" );
 206
 207         /* load the bsp */
 208         Sys_Printf( "Loading %s\n", source );
 209         LoadBSPFile( source );
 210
 211         /* note it */
 212         Sys_FPrintf( SYS_VRB, "--- ImportLightmaps ---\n");
 213
 214         /* do some path mangling */
 215         strcpy( dirname, source );
 216         StripExtension( dirname );
 217
 218         /* sanity check */
 219         if( bspLightBytes == NULL )
 220                 Error( "No lightmap data" );
 221
 222         /* make a directory for the lightmaps */
 223         Q_mkdir( dirname );
 224
 225         /* iterate through the lightmaps */
 226         for( i = 0, lightmap = bspLightBytes; lightmap < (bspLightBytes + numBSPLightBytes); i++, lightmap += (game->lightmapSize * game->lightmapSize * 3) )
 227         {
 228                 /* read a tga image */
 229                 sprintf( filename, "%s/lightmap_%04d.tga", dirname, i );
 230                 Sys_Printf( "Loading %s\n", filename );
 231                 buffer = NULL;
 232                 len = vfsLoadFile( filename, (void*) &buffer, -1 );
 233                 if( len < 0 )
 234                 {
 235                         Sys_Printf( "WARNING: Unable to load image %s\n", filename );
 236                         continue;
 237                 }
 238
 239                 /* parse file into an image */
 240                 pixels = NULL;
 241                 LoadTGABuffer( buffer, buffer + len, &pixels, &width, &height );
 242                 free( buffer );
 243
 244                 /* sanity check it */
 245                 if( pixels == NULL )
 246                 {
 247                         Sys_Printf( "WARNING: Unable to load image %s\n", filename );
 248                         continue;
 249                 }
 250                 if( width != game->lightmapSize || height != game->lightmapSize )
 251                         Sys_Printf( "WARNING: Image %s is not the right size (%d, %d) != (%d, %d)\n",
 252                                 filename, width, height, game->lightmapSize, game->lightmapSize );
 253
 254                 /* copy the pixels */
 255                 in = pixels;
 256                 for( y = 1; y <= game->lightmapSize; y++ )
 257                 {
 258                         out = lightmap + ((game->lightmapSize - y) * game->lightmapSize * 3);
 259                         for( x = 0; x < game->lightmapSize; x++, in += 4, out += 3 )
 260                                 VectorCopy( in, out );
 261                 }
 262
 263                 /* free the image */
 264                 free( pixels );
 265         }
 266
 267         /* write the bsp */
 268         Sys_Printf( "writing %s\n", source );
 269         WriteBSPFile( source );
 270
 271         /* return to sender */
 272         return 0;
 273 }
 274
 275
 276
 277 /* -------------------------------------------------------------------------------
 278
 279 this section deals with projecting a lightmap onto a raw drawsurface
 280
 281 ------------------------------------------------------------------------------- */
 282
 283 /*
 284 CompareLightSurface()
 285 compare function for qsort()
 286 */
 287
 288 static int CompareLightSurface( const void *a, const void *b )
 289 {
 290         shaderInfo_t    *asi, *bsi;
 291
 292
 293         /* get shaders */
 294         asi = surfaceInfos[ *((int*) a) ].si;
 295         bsi = surfaceInfos[ *((int*) b) ].si;
 296
 297         /* dummy check */
 298         if( asi == NULL )
 299                 return -1;
 300         if( bsi == NULL )
 301                 return 1;
 302
 303         /* compare shader names */
 304         return strcmp( asi->shader, bsi->shader );
 305 }
 306
 307
 308
 309 /*
 310 FinishRawLightmap()
 311 allocates a raw lightmap's necessary buffers
 312 */
 313
 314 void FinishRawLightmap( rawLightmap_t *lm )
 315 {
 316         int                                     i, j, c, size, *sc;
 317         float                           is;
 318         surfaceInfo_t           *info;
 319
 320
 321         /* sort light surfaces by shader name */
 322         qsort( &lightSurfaces[ lm->firstLightSurface ], lm->numLightSurfaces, sizeof( int ), CompareLightSurface );
 323
 324         /* count clusters */
 325         lm->numLightClusters = 0;
 326         for( i = 0; i < lm->numLightSurfaces; i++ )
 327         {
 328                 /* get surface info */
 329                 info = &surfaceInfos[ lightSurfaces[ lm->firstLightSurface + i ] ];
 330
 331                 /* add surface clusters */
 332                 lm->numLightClusters += info->numSurfaceClusters;
 333         }
 334
 335         /* allocate buffer for clusters and copy */
 336         lm->lightClusters = safe_malloc( lm->numLightClusters * sizeof( *lm->lightClusters ) );
 337         c = 0;
 338         for( i = 0; i < lm->numLightSurfaces; i++ )
 339         {
 340                 /* get surface info */
 341                 info = &surfaceInfos[ lightSurfaces[ lm->firstLightSurface + i ] ];
 342
 343                 /* add surface clusters */
 344                 for( j = 0; j < info->numSurfaceClusters; j++ )
 345                         lm->lightClusters[ c++ ] = surfaceClusters[ info->firstSurfaceCluster + j ];
 346         }
 347
 348         /* set styles */
 349         lm->styles[ 0 ] = LS_NORMAL;
 350         for( i = 1; i < MAX_LIGHTMAPS; i++ )
 351                 lm->styles[ i ] = LS_NONE;
 352
 353         /* set supersampling size */
 354         lm->sw = lm->w * superSample;
 355         lm->sh = lm->h * superSample;
 356
 357         /* add to super luxel count */
 358         numRawSuperLuxels += (lm->sw * lm->sh);
 359
 360         /* manipulate origin/vecs for supersampling */
 361         if( superSample > 1 && lm->vecs != NULL )
 362         {
 363                 /* calc inverse supersample */
 364                 is = 1.0f / superSample;
 365
 366                 /* scale the vectors and shift the origin */
 367                 #if 1
 368                         /* new code that works for arbitrary supersampling values */
 369                         VectorMA( lm->origin, -0.5, lm->vecs[ 0 ], lm->origin );
 370                         VectorMA( lm->origin, -0.5, lm->vecs[ 1 ], lm->origin );
 371                         VectorScale( lm->vecs[ 0 ], is, lm->vecs[ 0 ] );
 372                         VectorScale( lm->vecs[ 1 ], is, lm->vecs[ 1 ] );
 373                         VectorMA( lm->origin, is, lm->vecs[ 0 ], lm->origin );
 374                         VectorMA( lm->origin, is, lm->vecs[ 1 ], lm->origin );
 375                 #else
 376                         /* old code that only worked with a value of 2 */
 377                         VectorScale( lm->vecs[ 0 ], is, lm->vecs[ 0 ] );
 378                         VectorScale( lm->vecs[ 1 ], is, lm->vecs[ 1 ] );
 379                         VectorMA( lm->origin, -is, lm->vecs[ 0 ], lm->origin );
 380                         VectorMA( lm->origin, -is, lm->vecs[ 1 ], lm->origin );
 381                 #endif
 382         }
 383
 384         /* allocate bsp lightmap storage */
 385         size = lm->w * lm->h * BSP_LUXEL_SIZE * sizeof( float );
 386         if( lm->bspLuxels[ 0 ] == NULL )
 387                 lm->bspLuxels[ 0 ] = safe_malloc( size );
 388         memset( lm->bspLuxels[ 0 ], 0, size );
 389
 390         /* allocate radiosity lightmap storage */
 391         if( bounce )
 392         {
 393                 size = lm->w * lm->h * RAD_LUXEL_SIZE * sizeof( float );
 394                 if( lm->radLuxels[ 0 ] == NULL )
 395                         lm->radLuxels[ 0 ] = safe_malloc( size );
 396                 memset( lm->radLuxels[ 0 ], 0, size );
 397         }
 398
 399         /* allocate sampling lightmap storage */
 400         size = lm->sw * lm->sh * SUPER_LUXEL_SIZE * sizeof( float );
 401         if( lm->superLuxels[ 0 ] == NULL )
 402                 lm->superLuxels[ 0 ] = safe_malloc( size );
 403         memset( lm->superLuxels[ 0 ], 0, size );
 404
 405         /* allocate origin map storage */
 406         size = lm->sw * lm->sh * SUPER_ORIGIN_SIZE * sizeof( float );
 407         if( lm->superOrigins == NULL )
 408                 lm->superOrigins = safe_malloc( size );
 409         memset( lm->superOrigins, 0, size );
 410
 411         /* allocate normal map storage */
 412         size = lm->sw * lm->sh * SUPER_NORMAL_SIZE * sizeof( float );
 413         if( lm->superNormals == NULL )
 414                 lm->superNormals = safe_malloc( size );
 415         memset( lm->superNormals, 0, size );
 416
 417         /* allocate floodlight map storage */
 418         size = lm->sw * lm->sh * SUPER_FLOODLIGHT_SIZE * sizeof( float );
 419         if( lm->superFloodLight == NULL )
 420                 lm->superFloodLight = safe_malloc( size );
 421         memset( lm->superFloodLight, 0, size );
 422
 423         /* allocate cluster map storage */
 424         size = lm->sw * lm->sh * sizeof( int );
 425         if( lm->superClusters == NULL )
 426                 lm->superClusters = safe_malloc( size );
 427         size = lm->sw * lm->sh;
 428         sc = lm->superClusters;
 429         for( i = 0; i < size; i++ )
 430                 (*sc++) = CLUSTER_UNMAPPED;
 431
 432         /* deluxemap allocation */
 433         if( deluxemap )
 434         {
 435                 /* allocate sampling deluxel storage */
 436                 size = lm->sw * lm->sh * SUPER_DELUXEL_SIZE * sizeof( float );
 437                 if( lm->superDeluxels == NULL )
 438                         lm->superDeluxels = safe_malloc( size );
 439                 memset( lm->superDeluxels, 0, size );
 440
 441                 /* allocate bsp deluxel storage */
 442                 size = lm->w * lm->h * BSP_DELUXEL_SIZE * sizeof( float );
 443                 if( lm->bspDeluxels == NULL )
 444                         lm->bspDeluxels = safe_malloc( size );
 445                 memset( lm->bspDeluxels, 0, size );
 446         }
 447
 448         /* add to count */
 449         numLuxels += (lm->sw * lm->sh);
 450 }
 451
 452
 453
 454 /*
 455 AddPatchToRawLightmap()
 456 projects a lightmap for a patch surface
 457 since lightmap calculation for surfaces is now handled in a general way (light_ydnar.c),
 458 it is no longer necessary for patch verts to fall exactly on a lightmap sample
 459 based on AllocateLightmapForPatch()
 460 */
 461
 462 qboolean AddPatchToRawLightmap( int num, rawLightmap_t *lm )
 463 {
 464         bspDrawSurface_t        *ds;
 465         surfaceInfo_t           *info;
 466         int                                     x, y;
 467         bspDrawVert_t           *verts, *a, *b;
 468         vec3_t                          delta;
 469         mesh_t                          src, *subdivided, *mesh;
 470         float                           sBasis, tBasis, s, t;
 471         float                           length, widthTable[ MAX_EXPANDED_AXIS ], heightTable[ MAX_EXPANDED_AXIS ];
 472
 473
 474         /* patches finish a raw lightmap */
 475         lm->finished = qtrue;
 476
 477         /* get surface and info  */
 478         ds = &bspDrawSurfaces[ num ];
 479         info = &surfaceInfos[ num ];
 480
 481         /* make a temporary mesh from the drawsurf */
 482         src.width = ds->patchWidth;
 483         src.height = ds->patchHeight;
 484         src.verts = &yDrawVerts[ ds->firstVert ];
 485         //%     subdivided = SubdivideMesh( src, 8, 512 );
 486         subdivided = SubdivideMesh2( src, info->patchIterations );
 487
 488         /* fit it to the curve and remove colinear verts on rows/columns */
 489         PutMeshOnCurve( *subdivided );
 490         mesh = RemoveLinearMeshColumnsRows( subdivided );
 491         FreeMesh( subdivided );
 492
 493         /* find the longest distance on each row/column */
 494         verts = mesh->verts;
 495         memset( widthTable, 0, sizeof( widthTable ) );
 496         memset( heightTable, 0, sizeof( heightTable ) );
 497         for( y = 0; y < mesh->height; y++ )
 498         {
 499                 for( x = 0; x < mesh->width; x++ )
 500                 {
 501                         /* get width */
 502                         if( x + 1 < mesh->width )
 503                         {
 504                                 a = &verts[ (y * mesh->width) + x ];
 505                                 b = &verts[ (y * mesh->width) + x + 1 ];
 506                                 VectorSubtract( a->xyz, b->xyz, delta );
 507                                 length = VectorLength( delta );
 508                                 if( length > widthTable[ x ] )
 509                                         widthTable[ x ] = length;
 510                         }
 511
 512                         /* get height */
 513                         if( y + 1 < mesh->height )
 514                         {
 515                                 a = &verts[ (y * mesh->width) + x ];
 516                                 b = &verts[ ((y + 1) * mesh->width) + x ];
 517                                 VectorSubtract( a->xyz, b->xyz, delta );
 518                                 length = VectorLength( delta );
 519                                 if( length > heightTable[ y ] )
 520                                         heightTable[ y ] = length;
 521                         }
 522                 }
 523         }
 524
 525         /* determine lightmap width */
 526         length = 0;
 527         for( x = 0; x < (mesh->width - 1); x++ )
 528                 length += widthTable[ x ];
 529         lm->w = ceil( length / lm->sampleSize ) + 1;
 530         if( lm->w < ds->patchWidth )
 531                 lm->w = ds->patchWidth;
 532         if( lm->w > lm->customWidth )
 533                 lm->w = lm->customWidth;
 534         sBasis = (float) (lm->w - 1) / (float) (ds->patchWidth - 1);
 535
 536         /* determine lightmap height */
 537         length = 0;
 538         for( y = 0; y < (mesh->height - 1); y++ )
 539                 length += heightTable[ y ];
 540         lm->h = ceil( length / lm->sampleSize ) + 1;
 541         if( lm->h < ds->patchHeight )
 542                 lm->h = ds->patchHeight;
 543         if( lm->h > lm->customHeight )
 544                 lm->h = lm->customHeight;
 545         tBasis = (float) (lm->h - 1) / (float) (ds->patchHeight - 1);
 546
 547         /* free the temporary mesh */
 548         FreeMesh( mesh );
 549
 550         /* set the lightmap texture coordinates in yDrawVerts */
 551         lm->wrap[ 0 ] = qtrue;
 552         lm->wrap[ 1 ] = qtrue;
 553         verts = &yDrawVerts[ ds->firstVert ];
 554         for( y = 0; y < ds->patchHeight; y++ )
 555         {
 556                 t = (tBasis * y) + 0.5f;
 557                 for( x = 0; x < ds->patchWidth; x++ )
 558                 {
 559                         s = (sBasis * x) + 0.5f;
 560                         verts[ (y * ds->patchWidth) + x ].lightmap[ 0 ][ 0 ] = s * superSample;
 561                         verts[ (y * ds->patchWidth) + x ].lightmap[ 0 ][ 1 ] = t * superSample;
 562
 563                         if( y == 0 && !VectorCompare( verts[ x ].xyz, verts[ ((ds->patchHeight - 1) * ds->patchWidth) + x ].xyz ) )
 564                                 lm->wrap[ 1 ] = qfalse;
 565                 }
 566
 567                 if( !VectorCompare( verts[ (y * ds->patchWidth) ].xyz, verts[ (y * ds->patchWidth) + (ds->patchWidth - 1) ].xyz ) )
 568                         lm->wrap[ 0 ] = qfalse;
 569         }
 570
 571         /* debug code: */
 572         //%     Sys_Printf( "wrap S: %d wrap T: %d\n", lm->wrap[ 0 ], lm->wrap[ 1 ] );
 573         //% if( lm->w > (ds->lightmapWidth & 0xFF) || lm->h > (ds->lightmapHeight & 0xFF) )
 574         //%             Sys_Printf( "Patch lightmap: (%3d %3d) > (%3d, %3d)\n", lm->w, lm->h, ds->lightmapWidth & 0xFF, ds->lightmapHeight & 0xFF );
 575         //% ds->lightmapWidth = lm->w | (ds->lightmapWidth & 0xFFFF0000);
 576         //% ds->lightmapHeight = lm->h | (ds->lightmapHeight & 0xFFFF0000);
 577
 578         /* add to counts */
 579         numPatchesLightmapped++;
 580
 581         /* return */
 582         return qtrue;
 583 }
 584
 585
 586
 587 /*
 588 AddSurfaceToRawLightmap()
 589 projects a lightmap for a surface
 590 based on AllocateLightmapForSurface()
 591 */
 592
 593 qboolean AddSurfaceToRawLightmap( int num, rawLightmap_t *lm )
 594 {
 595         bspDrawSurface_t        *ds, *ds2;
 596         surfaceInfo_t           *info, *info2;
 597         int                                     num2, n, i, axisNum;
 598         float                           s, t, d, len, sampleSize;
 599         vec3_t                          mins, maxs, origin, faxis, size, exactSize, delta, normalized, vecs[ 2 ];
 600         vec4_t                          plane;
 601         bspDrawVert_t           *verts;
 602
 603
 604         /* get surface and info  */
 605         ds = &bspDrawSurfaces[ num ];
 606         info = &surfaceInfos[ num ];
 607
 608         /* add the surface to the raw lightmap */
 609         lightSurfaces[ numLightSurfaces++ ] = num;
 610         lm->numLightSurfaces++;
 611
 612         /* does this raw lightmap already have any surfaces? */
 613         if( lm->numLightSurfaces > 1 )
 614         {
 615                 /* surface and raw lightmap must have the same lightmap projection axis */
 616                 if( VectorCompare( info->axis, lm->axis ) == qfalse )
 617                         return qfalse;
 618
 619                 /* match identical attributes */
 620                 if( info->sampleSize != lm->sampleSize ||
 621                         info->entityNum != lm->entityNum ||
 622                         info->recvShadows != lm->recvShadows ||
 623                         info->si->lmCustomWidth != lm->customWidth ||
 624                         info->si->lmCustomHeight != lm->customHeight ||
 625                         info->si->lmBrightness != lm->brightness ||
 626                         info->si->lmFilterRadius != lm->filterRadius ||
 627                         info->si->splotchFix != lm->splotchFix )
 628                         return qfalse;
 629
 630                 /* surface bounds must intersect with raw lightmap bounds */
 631                 for( i = 0; i < 3; i++ )
 632                 {
 633                         if( info->mins[ i ] > lm->maxs[ i ] )
 634                                 return qfalse;
 635                         if( info->maxs[ i ] < lm->mins[ i ] )
 636                                 return qfalse;
 637                 }
 638
 639                 /* plane check (fixme: allow merging of nonplanars) */
 640                 if( info->si->lmMergable == qfalse )
 641                 {
 642                         if( info->plane == NULL || lm->plane == NULL )
 643                                 return qfalse;
 644
 645                         /* compare planes */
 646                         for( i = 0; i < 4; i++ )
 647                                 if( fabs( info->plane[ i ] - lm->plane[ i ] ) > EQUAL_EPSILON )
 648                                         return qfalse;
 649                 }
 650
 651                 /* debug code hacking */
 652                 //%     if( lm->numLightSurfaces > 1 )
 653                 //%             return qfalse;
 654         }
 655
 656         /* set plane */
 657         if( info->plane == NULL )
 658                 lm->plane = NULL;
 659
 660         /* add surface to lightmap bounds */
 661         AddPointToBounds( info->mins, lm->mins, lm->maxs );
 662         AddPointToBounds( info->maxs, lm->mins, lm->maxs );
 663
 664         /* check to see if this is a non-planar patch */
 665         if( ds->surfaceType == MST_PATCH &&
 666                 lm->axis[ 0 ] == 0.0f && lm->axis[ 1 ] == 0.0f && lm->axis[ 2 ] == 0.0f )
 667                 return AddPatchToRawLightmap( num, lm );
 668
 669         /* start with initially requested sample size */
 670         sampleSize = lm->sampleSize;
 671
 672         /* round to the lightmap resolution */
 673         for( i = 0; i < 3; i++ )
 674         {
 675                 exactSize[ i ] = lm->maxs[ i ] - lm->mins[ i ];
 676                 mins[ i ] = sampleSize * floor( lm->mins[ i ] / sampleSize );
 677                 maxs[ i ] = sampleSize * ceil( lm->maxs[ i ] / sampleSize );
 678                 size[ i ] = (maxs[ i ] - mins[ i ]) / sampleSize + 1.0f;
 679
 680                 /* hack (god this sucks) */
 681                 if( size[ i ] > lm->customWidth || size[ i ] > lm->customHeight )
 682                 {
 683                         i = -1;
 684                         sampleSize += 1.0f;
 685                 }
 686         }
 687
 688         if(sampleSize != lm->sampleSize)
 689         {
 690                 Sys_FPrintf(SYS_VRB,"WARNING: surface at (%6.0f %6.0f %6.0f) (%6.0f %6.0f %6.0f) too large for desired samplesize/lightmapsize/lightmapscale combination, increased samplesize from %d to %d\n",
 691                         info->mins[0],
 692                         info->mins[1],
 693                         info->mins[2],
 694                         info->maxs[0],
 695                         info->maxs[1],
 696                         info->maxs[2],
 697                         lm->sampleSize,
 698                         (int) sampleSize);
 699         }
 700
 701         /* set actual sample size */
 702         lm->actualSampleSize = sampleSize;
 703
 704         /* fixme: copy rounded mins/maxes to lightmap record? */
 705         if( lm->plane == NULL )
 706         {
 707                 VectorCopy( mins, lm->mins );
 708                 VectorCopy( maxs, lm->maxs );
 709                 VectorCopy( mins, origin );
 710         }
 711
 712         /* set lightmap origin */
 713         VectorCopy( lm->mins, origin );
 714
 715         /* make absolute axis */
 716         faxis[ 0 ] = fabs( lm->axis[ 0 ] );
 717         faxis[ 1 ] = fabs( lm->axis[ 1 ] );
 718         faxis[ 2 ] = fabs( lm->axis[ 2 ] );
 719
 720         /* clear out lightmap vectors */
 721         memset( vecs, 0, sizeof( vecs ) );
 722
 723         /* classify the plane (x y or z major) (ydnar: biased to z axis projection) */
 724         if( faxis[ 2 ] >= faxis[ 0 ] && faxis[ 2 ] >= faxis[ 1 ] )
 725         {
 726                 axisNum = 2;
 727                 lm->w = size[ 0 ];
 728                 lm->h = size[ 1 ];
 729                 vecs[ 0 ][ 0 ] = 1.0f / sampleSize;
 730                 vecs[ 1 ][ 1 ] = 1.0f / sampleSize;
 731         }
 732         else if( faxis[ 0 ] >= faxis[ 1 ] && faxis[ 0 ] >= faxis[ 2 ] )
 733         {
 734                 axisNum = 0;
 735                 lm->w = size[ 1 ];
 736                 lm->h = size[ 2 ];
 737                 vecs[ 0 ][ 1 ] = 1.0f / sampleSize;
 738                 vecs[ 1 ][ 2 ] = 1.0f / sampleSize;
 739         }
 740         else
 741         {
 742                 axisNum = 1;
 743                 lm->w = size[ 0 ];
 744                 lm->h = size[ 2 ];
 745                 vecs[ 0 ][ 0 ] = 1.0f / sampleSize;
 746                 vecs[ 1 ][ 2 ] = 1.0f / sampleSize;
 747         }
 748
 749         /* check for bogus axis */
 750         if( faxis[ axisNum ] == 0.0f )
 751         {
 752                 Sys_Printf( "WARNING: ProjectSurfaceLightmap: Chose a 0 valued axis\n" );
 753                 lm->w = lm->h = 0;
 754                 return qfalse;
 755         }
 756
 757         /* store the axis number in the lightmap */
 758         lm->axisNum = axisNum;
 759
 760         /* walk the list of surfaces on this raw lightmap */
 761         for( n = 0; n < lm->numLightSurfaces; n++ )
 762         {
 763                 /* get surface */
 764                 num2 = lightSurfaces[ lm->firstLightSurface + n ];
 765                 ds2 = &bspDrawSurfaces[ num2 ];
 766                 info2 = &surfaceInfos[ num2 ];
 767                 verts = &yDrawVerts[ ds2->firstVert ];
 768
 769                 /* set the lightmap texture coordinates in yDrawVerts in [0, superSample * lm->customWidth] space */
 770                 for( i = 0; i < ds2->numVerts; i++ )
 771                 {
 772                         VectorSubtract( verts[ i ].xyz, origin, delta );
 773                         s = DotProduct( delta, vecs[ 0 ] ) + 0.5f;
 774                         t = DotProduct( delta, vecs[ 1 ] ) + 0.5f;
 775                         verts[ i ].lightmap[ 0 ][ 0 ] = s * superSample;
 776                         verts[ i ].lightmap[ 0 ][ 1 ] = t * superSample;
 777
 778                         if( s > (float) lm->w || t > (float) lm->h )
 779                         {
 780                                 Sys_FPrintf( SYS_VRB, "WARNING: Lightmap texture coords out of range: S %1.4f > %3d || T %1.4f > %3d\n",
 781                                         s, lm->w, t, lm->h );
 782                         }
 783                 }
 784         }
 785
 786         /* get first drawsurface */
 787         num2 = lightSurfaces[ lm->firstLightSurface ];
 788         ds2 = &bspDrawSurfaces[ num2 ];
 789         info2 = &surfaceInfos[ num2 ];
 790         verts = &yDrawVerts[ ds2->firstVert ];
 791
 792         /* calculate lightmap origin */
 793         if( VectorLength( ds2->lightmapVecs[ 2 ] ) )
 794                 VectorCopy( ds2->lightmapVecs[ 2 ], plane );
 795         else
 796                 VectorCopy( lm->axis, plane );
 797         plane[ 3 ] = DotProduct( verts[ 0 ].xyz, plane );
 798
 799         VectorCopy( origin, lm->origin );
 800         d = DotProduct( lm->origin, plane ) - plane[ 3 ];
 801         d /= plane[ axisNum ];
 802         lm->origin[ axisNum ] -= d;
 803
 804         /* legacy support */
 805         VectorCopy( lm->origin, ds->lightmapOrigin );
 806
 807         /* for planar surfaces, create lightmap vectors for st->xyz conversion */
 808         if( VectorLength( ds->lightmapVecs[ 2 ] ) || 1 )        /* ydnar: can't remember what exactly i was thinking here... */
 809         {
 810                 /* allocate space for the vectors */
 811                 lm->vecs = safe_malloc( 3 * sizeof( vec3_t ) );
 812                 memset( lm->vecs, 0, 3 * sizeof( vec3_t ) );
 813                 VectorCopy( ds->lightmapVecs[ 2 ], lm->vecs[ 2 ] );
 814
 815                 /* project stepped lightmap blocks and subtract to get planevecs */
 816                 for( i = 0; i < 2; i++ )
 817                 {
 818                         len = VectorNormalize( vecs[ i ], normalized );
 819                         VectorScale( normalized, (1.0 / len), lm->vecs[ i ] );
 820                         d = DotProduct( lm->vecs[ i ], plane );
 821                         d /= plane[ axisNum ];
 822                         lm->vecs[ i ][ axisNum ] -= d;
 823                 }
 824         }
 825         else
 826         {
 827                 /* lightmap vectors are useless on a non-planar surface */
 828                 lm->vecs = NULL;
 829         }
 830
 831         /* add to counts */
 832         if( ds->surfaceType == MST_PATCH )
 833         {
 834                 numPatchesLightmapped++;
 835                 if( lm->plane != NULL )
 836                         numPlanarPatchesLightmapped++;
 837         }
 838         else
 839         {
 840                 if( lm->plane != NULL )
 841                         numPlanarsLightmapped++;
 842                 else
 843                         numNonPlanarsLightmapped++;
 844         }
 845
 846         /* return */
 847         return qtrue;
 848 }
 849
 850
 851
 852 /*
 853 CompareSurfaceInfo()
 854 compare function for qsort()
 855 */
 856
 857 static int CompareSurfaceInfo( const void *a, const void *b )
 858 {
 859         surfaceInfo_t   *aInfo, *bInfo;
 860         int                             i;
 861
 862
 863         /* get surface info */
 864         aInfo = &surfaceInfos[ *((int*) a) ];
 865         bInfo = &surfaceInfos[ *((int*) b) ];
 866
 867         /* model first */
 868         if( aInfo->modelindex < bInfo->modelindex )
 869                 return 1;
 870         else if( aInfo->modelindex > bInfo->modelindex )
 871                 return -1;
 872
 873         /* then lightmap status */
 874         if( aInfo->hasLightmap < bInfo->hasLightmap )
 875                 return 1;
 876         else if( aInfo->hasLightmap > bInfo->hasLightmap )
 877                 return -1;
 878
 879    /* 27: then shader! */
 880    if (aInfo->si < bInfo->si)
 881         return 1;
 882    else if (aInfo->si > bInfo->si)
 883       return -1;
 884
 885
 886         /* then lightmap sample size */
 887         if( aInfo->sampleSize < bInfo->sampleSize )
 888                 return 1;
 889         else if( aInfo->sampleSize > bInfo->sampleSize )
 890                 return -1;
 891
 892         /* then lightmap axis */
 893         for( i = 0; i < 3; i++ )
 894         {
 895                 if( aInfo->axis[ i ] < bInfo->axis[ i ] )
 896                         return 1;
 897                 else if( aInfo->axis[ i ] > bInfo->axis[ i ] )
 898                         return -1;
 899         }
 900
 901         /* then plane */
 902         if( aInfo->plane == NULL && bInfo->plane != NULL )
 903                 return 1;
 904         else if( aInfo->plane != NULL && bInfo->plane == NULL )
 905                 return -1;
 906         else if( aInfo->plane != NULL && bInfo->plane != NULL )
 907         {
 908                 for( i = 0; i < 4; i++ )
 909                 {
 910                         if( aInfo->plane[ i ] < bInfo->plane[ i ] )
 911                                 return 1;
 912                         else if( aInfo->plane[ i ] > bInfo->plane[ i ] )
 913                                 return -1;
 914                 }
 915         }
 916
 917         /* then position in world */
 918         for( i = 0; i < 3; i++ )
 919         {
 920                 if( aInfo->mins[ i ] < bInfo->mins[ i ] )
 921                         return 1;
 922                 else if( aInfo->mins[ i ] > bInfo->mins[ i ] )
 923                         return -1;
 924         }
 925
 926         /* these are functionally identical (this should almost never happen) */
 927         return 0;
 928 }
 929
 930
 931
 932 /*
 933 SetupSurfaceLightmaps()
 934 allocates lightmaps for every surface in the bsp that needs one
 935 this depends on yDrawVerts being allocated
 936 */
 937
 938 void SetupSurfaceLightmaps( void )
 939 {
 940         int                                     i, j, k, s,num, num2;
 941         bspModel_t                      *model;
 942         bspLeaf_t                       *leaf;
 943         bspDrawSurface_t        *ds, *ds2;
 944         surfaceInfo_t           *info, *info2;
 945         rawLightmap_t           *lm;
 946         qboolean                        added;
 947         vec3_t                          mapSize, entityOrigin;
 948
 949
 950         /* note it */
 951         Sys_FPrintf( SYS_VRB, "--- SetupSurfaceLightmaps ---\n");
 952
 953         /* determine supersample amount */
 954         if( superSample < 1 )
 955                 superSample = 1;
 956         else if( superSample > 8 )
 957         {
 958                 Sys_Printf( "WARNING: Insane supersampling amount (%d) detected.\n", superSample );
 959                 superSample = 8;
 960         }
 961
 962         /* clear map bounds */
 963         ClearBounds( mapMins, mapMaxs );
 964
 965         /* allocate a list of surface clusters */
 966         numSurfaceClusters = 0;
 967         maxSurfaceClusters = numBSPLeafSurfaces;
 968         surfaceClusters = safe_malloc( maxSurfaceClusters * sizeof( *surfaceClusters ) );
 969         memset( surfaceClusters, 0, maxSurfaceClusters * sizeof( *surfaceClusters ) );
 970
 971         /* allocate a list for per-surface info */
 972         surfaceInfos = safe_malloc( numBSPDrawSurfaces * sizeof( *surfaceInfos ) );
 973         memset( surfaceInfos, 0, numBSPDrawSurfaces * sizeof( *surfaceInfos ) );
 974         for( i = 0; i < numBSPDrawSurfaces; i++ )
 975                 surfaceInfos[ i ].childSurfaceNum = -1;
 976
 977         /* allocate a list of surface indexes to be sorted */
 978         sortSurfaces = safe_malloc( numBSPDrawSurfaces * sizeof( int ) );
 979         memset( sortSurfaces, 0, numBSPDrawSurfaces * sizeof( int ) );
 980
 981         /* walk each model in the bsp */
 982         for( i = 0; i < numBSPModels; i++ )
 983         {
 984                 /* get model */
 985                 model = &bspModels[ i ];
 986
 987                 /* walk the list of surfaces in this model and fill out the info structs */
 988                 for( j = 0; j < model->numBSPSurfaces; j++ )
 989                 {
 990                         /* make surface index */
 991                         num = model->firstBSPSurface + j;
 992
 993                         /* copy index to sort list */
 994                         sortSurfaces[ num ] = num;
 995
 996                         /* get surface and info */
 997                         ds = &bspDrawSurfaces[ num ];
 998                         info = &surfaceInfos[ num ];
 999
1000                         /* set entity origin */
1001                         if( ds->numVerts > 0 )
1002                                 VectorSubtract( yDrawVerts[ ds->firstVert ].xyz, bspDrawVerts[ ds->firstVert ].xyz, entityOrigin );
1003                         else
1004                                 VectorClear( entityOrigin );
1005
1006                         /* basic setup */
1007                         info->modelindex = i;
1008                         info->lm = NULL;
1009                         info->plane = NULL;
1010                         info->firstSurfaceCluster = numSurfaceClusters;
1011
1012                         /* get extra data */
1013                         info->si = GetSurfaceExtraShaderInfo( num );
1014                         if( info->si == NULL )
1015                                 info->si = ShaderInfoForShader( bspShaders[ ds->shaderNum ].shader );
1016                         info->parentSurfaceNum = GetSurfaceExtraParentSurfaceNum( num );
1017                         info->entityNum = GetSurfaceExtraEntityNum( num );
1018                         info->castShadows = GetSurfaceExtraCastShadows( num );
1019                         info->recvShadows = GetSurfaceExtraRecvShadows( num );
1020                         info->sampleSize = GetSurfaceExtraSampleSize( num );
1021                         info->longestCurve = GetSurfaceExtraLongestCurve( num );
1022                         info->patchIterations = IterationsForCurve( info->longestCurve, patchSubdivisions );
1023                         GetSurfaceExtraLightmapAxis( num, info->axis );
1024
1025                         /* mark parent */
1026                         if( info->parentSurfaceNum >= 0 )
1027                                 surfaceInfos[ info->parentSurfaceNum ].childSurfaceNum = j;
1028
1029                         /* determine surface bounds */
1030                         ClearBounds( info->mins, info->maxs );
1031                         for( k = 0; k < ds->numVerts; k++ )
1032                         {
1033                                 AddPointToBounds( yDrawVerts[ ds->firstVert + k ].xyz, mapMins, mapMaxs );
1034                                 AddPointToBounds( yDrawVerts[ ds->firstVert + k ].xyz, info->mins, info->maxs );
1035                         }
1036
1037                         /* find all the bsp clusters the surface falls into */
1038                         for( k = 0; k < numBSPLeafs; k++ )
1039                         {
1040                                 /* get leaf */
1041                                 leaf = &bspLeafs[ k ];
1042
1043                                 /* test bbox */
1044                                 if( leaf->mins[ 0 ] > info->maxs[ 0 ] || leaf->maxs[ 0 ] < info->mins[ 0 ] ||
1045                                         leaf->mins[ 1 ] > info->maxs[ 1 ] || leaf->maxs[ 1 ] < info->mins[ 1 ] ||
1046                                         leaf->mins[ 2 ] > info->maxs[ 2 ] || leaf->maxs[ 2 ] < info->mins[ 2 ] )
1047                                         continue;
1048
1049                                 /* test leaf surfaces */
1050                                 for( s = 0; s < leaf->numBSPLeafSurfaces; s++ )
1051                                 {
1052                                         if( bspLeafSurfaces[ leaf->firstBSPLeafSurface + s ] == num )
1053                                         {
1054                                                 if( numSurfaceClusters >= maxSurfaceClusters )
1055                                                         Error( "maxSurfaceClusters exceeded" );
1056                                                 surfaceClusters[ numSurfaceClusters ] = leaf->cluster;
1057                                                 numSurfaceClusters++;
1058                                                 info->numSurfaceClusters++;
1059                                         }
1060                                 }
1061                         }
1062
1063                         /* determine if surface is planar */
1064                         if( VectorLength( ds->lightmapVecs[ 2 ] ) > 0.0f )
1065                         {
1066                                 /* make a plane */
1067                                 info->plane = safe_malloc( 4 * sizeof( float ) );
1068                                 VectorCopy( ds->lightmapVecs[ 2 ], info->plane );
1069                                 info->plane[ 3 ] = DotProduct( yDrawVerts[ ds->firstVert ].xyz, info->plane );
1070                         }
1071
1072                         /* determine if surface requires a lightmap */
1073                         if( ds->surfaceType == MST_TRIANGLE_SOUP ||
1074                                 ds->surfaceType == MST_FOLIAGE ||
1075                                 (info->si->compileFlags & C_VERTEXLIT) )
1076                                 numSurfsVertexLit++;
1077                         else
1078                         {
1079                                 numSurfsLightmapped++;
1080                                 info->hasLightmap = qtrue;
1081                         }
1082                 }
1083         }
1084
1085         /* find longest map distance */
1086         VectorSubtract( mapMaxs, mapMins, mapSize );
1087         maxMapDistance = VectorLength( mapSize );
1088
1089         /* sort the surfaces info list */
1090         qsort( sortSurfaces, numBSPDrawSurfaces, sizeof( int ), CompareSurfaceInfo );
1091
1092         /* allocate a list of surfaces that would go into raw lightmaps */
1093         numLightSurfaces = 0;
1094         lightSurfaces = safe_malloc( numSurfsLightmapped * sizeof( int ) );
1095         memset( lightSurfaces, 0, numSurfsLightmapped * sizeof( int ) );
1096
1097         /* allocate a list of raw lightmaps */
1098         numRawSuperLuxels = 0;
1099         numRawLightmaps = 0;
1100         rawLightmaps = safe_malloc( numSurfsLightmapped * sizeof( *rawLightmaps ) );
1101         memset( rawLightmaps, 0, numSurfsLightmapped * sizeof( *rawLightmaps ) );
1102
1103         /* walk the list of sorted surfaces */
1104         for( i = 0; i < numBSPDrawSurfaces; i++ )
1105         {
1106                 /* get info and attempt early out */
1107                 num = sortSurfaces[ i ];
1108                 ds = &bspDrawSurfaces[ num ];
1109                 info = &surfaceInfos[ num ];
1110                 if( info->hasLightmap == qfalse || info->lm != NULL || info->parentSurfaceNum >= 0 )
1111                         continue;
1112
1113                 /* allocate a new raw lightmap */
1114                 lm = &rawLightmaps[ numRawLightmaps ];
1115                 numRawLightmaps++;
1116
1117                 /* set it up */
1118                 lm->splotchFix = info->si->splotchFix;
1119                 lm->firstLightSurface = numLightSurfaces;
1120                 lm->numLightSurfaces = 0;
1121                 /* vortex: multiply lightmap sample size by -samplescale */
1122                 if (sampleScale > 0)
1123                         lm->sampleSize = info->sampleSize*sampleScale;
1124                 else
1125                         lm->sampleSize = info->sampleSize;
1126                 lm->actualSampleSize = lm->sampleSize;
1127                 lm->entityNum = info->entityNum;
1128                 lm->recvShadows = info->recvShadows;
1129                 lm->brightness = info->si->lmBrightness;
1130                 lm->filterRadius = info->si->lmFilterRadius;
1131                 VectorCopy(info->si->floodlightRGB, lm->floodlightRGB);
1132                 lm->floodlightDistance = info->si->floodlightDistance;
1133                 lm->floodlightIntensity = info->si->floodlightIntensity;
1134                 lm->floodlightDirectionScale = info->si->floodlightDirectionScale;
1135                 VectorCopy( info->axis, lm->axis );
1136                 lm->plane = info->plane;
1137                 VectorCopy( info->mins, lm->mins );
1138                 VectorCopy( info->maxs, lm->maxs );
1139
1140                 lm->customWidth = info->si->lmCustomWidth;
1141                 lm->customHeight = info->si->lmCustomHeight;
1142
1143                 /* add the surface to the raw lightmap */
1144                 AddSurfaceToRawLightmap( num, lm );
1145                 info->lm = lm;
1146
1147                 /* do an exhaustive merge */
1148                 added = qtrue;
1149                 while( added )
1150                 {
1151                         /* walk the list of surfaces again */
1152                         added = qfalse;
1153                         for( j = i + 1; j < numBSPDrawSurfaces && lm->finished == qfalse; j++ )
1154                         {
1155                                 /* get info and attempt early out */
1156                                 num2 = sortSurfaces[ j ];
1157                                 ds2 = &bspDrawSurfaces[ num2 ];
1158                                 info2 = &surfaceInfos[ num2 ];
1159                                 if( info2->hasLightmap == qfalse || info2->lm != NULL )
1160                                         continue;
1161
1162                                 /* add the surface to the raw lightmap */
1163                                 if( AddSurfaceToRawLightmap( num2, lm ) )
1164                                 {
1165                                         info2->lm = lm;
1166                                         added = qtrue;
1167                                 }
1168                                 else
1169                                 {
1170                                         /* back up one */
1171                                         lm->numLightSurfaces--;
1172                                         numLightSurfaces--;
1173                                 }
1174                         }
1175                 }
1176
1177                 /* finish the lightmap and allocate the various buffers */
1178                 FinishRawLightmap( lm );
1179         }
1180
1181         /* allocate vertex luxel storage */
1182         for( k = 0; k < MAX_LIGHTMAPS; k++ )
1183         {
1184                 vertexLuxels[ k ] = safe_malloc( numBSPDrawVerts * VERTEX_LUXEL_SIZE * sizeof( float ) );
1185                 memset( vertexLuxels[ k ], 0, numBSPDrawVerts * VERTEX_LUXEL_SIZE * sizeof( float ) );
1186                 radVertexLuxels[ k ] = safe_malloc( numBSPDrawVerts * VERTEX_LUXEL_SIZE * sizeof( float ) );
1187                 memset( radVertexLuxels[ k ], 0, numBSPDrawVerts * VERTEX_LUXEL_SIZE * sizeof( float ) );
1188         }
1189
1190         /* emit some stats */
1191         Sys_FPrintf( SYS_VRB, "%9d surfaces\n", numBSPDrawSurfaces );
1192         Sys_FPrintf( SYS_VRB, "%9d raw lightmaps\n", numRawLightmaps );
1193         Sys_FPrintf( SYS_VRB, "%9d surfaces vertex lit\n", numSurfsVertexLit );
1194         Sys_FPrintf( SYS_VRB, "%9d surfaces lightmapped\n", numSurfsLightmapped );
1195         Sys_FPrintf( SYS_VRB, "%9d planar surfaces lightmapped\n", numPlanarsLightmapped );
1196         Sys_FPrintf( SYS_VRB, "%9d non-planar surfaces lightmapped\n", numNonPlanarsLightmapped );
1197         Sys_FPrintf( SYS_VRB, "%9d patches lightmapped\n", numPatchesLightmapped );
1198         Sys_FPrintf( SYS_VRB, "%9d planar patches lightmapped\n", numPlanarPatchesLightmapped );
1199 }
1200
1201
1202
1203 /*
1204 StitchSurfaceLightmaps()
1205 stitches lightmap edges
1206 2002-11-20 update: use this func only for stitching nonplanar patch lightmap seams
1207 */
1208
1209 #define MAX_STITCH_CANDIDATES   32
1210 #define MAX_STITCH_LUXELS               64
1211
1212 void StitchSurfaceLightmaps( void )
1213 {
1214         int                             i, j, x, y, x2, y2, *cluster, *cluster2,
1215                                         numStitched, numCandidates, numLuxels, f, fOld, start;
1216         rawLightmap_t   *lm, *a, *b, *c[ MAX_STITCH_CANDIDATES ];
1217         float                   *luxel, *luxel2, *origin, *origin2, *normal, *normal2,
1218                                         sampleSize, average[ 3 ], totalColor, ootc, *luxels[ MAX_STITCH_LUXELS ];
1219
1220
1221         /* disabled for now */
1222         return;
1223
1224         /* note it */
1225         Sys_Printf( "--- StitchSurfaceLightmaps ---\n");
1226
1227         /* init pacifier */
1228         fOld = -1;
1229         start = I_FloatTime();
1230
1231         /* walk the list of raw lightmaps */
1232         numStitched = 0;
1233         for( i = 0; i < numRawLightmaps; i++ )
1234         {
1235                 /* print pacifier */
1236                 f = 10 * i / numRawLightmaps;
1237                 if( f != fOld )
1238                 {
1239                         fOld = f;
1240                         Sys_Printf( "%i...", f );
1241                 }
1242
1243                 /* get lightmap a */
1244                 a = &rawLightmaps[ i ];
1245
1246                 /* walk rest of lightmaps */
1247                 numCandidates = 0;
1248                 for( j = i + 1; j < numRawLightmaps && numCandidates < MAX_STITCH_CANDIDATES; j++ )
1249                 {
1250                         /* get lightmap b */
1251                         b = &rawLightmaps[ j ];
1252
1253                         /* test bounding box */
1254                         if( a->mins[ 0 ] > b->maxs[ 0 ] || a->maxs[ 0 ] < b->mins[ 0 ] ||
1255                                 a->mins[ 1 ] > b->maxs[ 1 ] || a->maxs[ 1 ] < b->mins[ 1 ] ||
1256                                 a->mins[ 2 ] > b->maxs[ 2 ] || a->maxs[ 2 ] < b->mins[ 2 ] )
1257                                 continue;
1258
1259                         /* add candidate */
1260                         c[ numCandidates++ ] = b;
1261                 }
1262
1263                 /* walk luxels */
1264                 for( y = 0; y < a->sh; y++ )
1265                 {
1266                         for( x = 0; x < a->sw; x++ )
1267                         {
1268                                 /* ignore unmapped/unlit luxels */
1269                                 lm = a;
1270                                 cluster = SUPER_CLUSTER( x, y );
1271                                 if( *cluster == CLUSTER_UNMAPPED )
1272                                         continue;
1273                                 luxel = SUPER_LUXEL( 0, x, y );
1274                                 if( luxel[ 3 ] <= 0.0f )
1275                                         continue;
1276
1277                                 /* get particulars */
1278                                 origin = SUPER_ORIGIN( x, y );
1279                                 normal = SUPER_NORMAL( x, y );
1280
1281                                 /* walk candidate list */
1282                                 for( j = 0; j < numCandidates; j++ )
1283                                 {
1284                                         /* get candidate */
1285                                         b = c[ j ];
1286                                         lm = b;
1287
1288                                         /* set samplesize to the smaller of the pair */
1289                                         sampleSize = 0.5f * (a->actualSampleSize < b->actualSampleSize ? a->actualSampleSize : b->actualSampleSize);
1290
1291                                         /* test bounding box */
1292                                         if( origin[ 0 ] < (b->mins[ 0 ] - sampleSize) || (origin[ 0 ] > b->maxs[ 0 ] + sampleSize) ||
1293                                                 origin[ 1 ] < (b->mins[ 1 ] - sampleSize) || (origin[ 1 ] > b->maxs[ 1 ] + sampleSize) ||
1294                                                 origin[ 2 ] < (b->mins[ 2 ] - sampleSize) || (origin[ 2 ] > b->maxs[ 2 ] + sampleSize) )
1295                                                 continue;
1296
1297                                         /* walk candidate luxels */
1298                                         VectorClear( average );
1299                                         numLuxels = 0;
1300                                         totalColor = 0.0f;
1301                                         for( y2 = 0; y2 < b->sh && numLuxels < MAX_STITCH_LUXELS; y2++ )
1302                                         {
1303                                                 for( x2 = 0; x2 < b->sw && numLuxels < MAX_STITCH_LUXELS; x2++ )
1304                                                 {
1305                                                         /* ignore same luxels */
1306                                                         if( a == b && abs( x - x2 ) <= 1 && abs( y - y2 ) <= 1 )
1307                                                                 continue;
1308
1309                                                         /* ignore unmapped/unlit luxels */
1310                                                         cluster2 = SUPER_CLUSTER( x2, y2 );
1311                                                         if( *cluster2 == CLUSTER_UNMAPPED )
1312                                                                 continue;
1313                                                         luxel2 = SUPER_LUXEL( 0, x2, y2 );
1314                                                         if( luxel2[ 3 ] <= 0.0f )
1315                                                                 continue;
1316
1317                                                         /* get particulars */
1318                                                         origin2 = SUPER_ORIGIN( x2, y2 );
1319                                                         normal2 = SUPER_NORMAL( x2, y2 );
1320
1321                                                         /* test normal */
1322                                                         if( DotProduct( normal, normal2 ) < 0.5f )
1323                                                                 continue;
1324
1325                                                         /* test bounds */
1326                                                         if( fabs( origin[ 0 ] - origin2[ 0 ] ) > sampleSize ||
1327                                                                 fabs( origin[ 1 ] - origin2[ 1 ] ) > sampleSize ||
1328                                                                 fabs( origin[ 2 ] - origin2[ 2 ] ) > sampleSize )
1329                                                                 continue;
1330
1331                                                         /* add luxel */
1332                                                         //%     VectorSet( luxel2, 255, 0, 255 );
1333                                                         luxels[ numLuxels++ ] = luxel2;
1334                                                         VectorAdd( average, luxel2, average );
1335                                                         totalColor += luxel2[ 3 ];
1336                                                 }
1337                                         }
1338
1339                                         /* early out */
1340                                         if( numLuxels == 0 )
1341                                                 continue;
1342
1343                                         /* scale average */
1344                                         ootc = 1.0f / totalColor;
1345                                         VectorScale( average, ootc, luxel );
1346                                         luxel[ 3 ] = 1.0f;
1347                                         numStitched++;
1348                                 }
1349                         }
1350                 }
1351         }
1352
1353         /* emit statistics */
1354         Sys_Printf( " (%i)\n", (int) (I_FloatTime() - start) );
1355         Sys_FPrintf( SYS_VRB, "%9d luxels stitched\n", numStitched );
1356 }
1357
1358
1359
1360 /*
1361 CompareBSPLuxels()
1362 compares two surface lightmaps' bsp luxels, ignoring occluded luxels
1363 */
1364
1365 #define SOLID_EPSILON           0.0625
1366 #define LUXEL_TOLERANCE         0.0025
1367 #define LUXEL_COLOR_FRAC        0.001302083     /* 1 / 3 / 256 */
1368
1369 static qboolean CompareBSPLuxels( rawLightmap_t *a, int aNum, rawLightmap_t *b, int bNum )
1370 {
1371         rawLightmap_t   *lm;
1372         int                             x, y;
1373         double                  delta, total, rd, gd, bd;
1374         float                   *aLuxel, *bLuxel;
1375
1376
1377         /* styled lightmaps will never be collapsed to non-styled lightmaps when there is _minlight */
1378         if( (minLight[ 0 ] || minLight[ 1 ] || minLight[ 2 ]) &&
1379                 ((aNum == 0 && bNum != 0) || (aNum != 0 && bNum == 0)) )
1380                 return qfalse;
1381
1382         /* basic tests */
1383         if( a->customWidth != b->customWidth || a->customHeight != b->customHeight ||
1384                 a->brightness != b->brightness ||
1385                 a->solid[ aNum ] != b->solid[ bNum ] ||
1386                 a->bspLuxels[ aNum ] == NULL || b->bspLuxels[ bNum ] == NULL )
1387                 return qfalse;
1388
1389         /* compare solid color lightmaps */
1390         if( a->solid[ aNum ] && b->solid[ bNum ] )
1391         {
1392                 /* get deltas */
1393                 rd = fabs( a->solidColor[ aNum ][ 0 ] - b->solidColor[ bNum ][ 0 ] );
1394                 gd = fabs( a->solidColor[ aNum ][ 1 ] - b->solidColor[ bNum ][ 1 ] );
1395                 bd = fabs( a->solidColor[ aNum ][ 2 ] - b->solidColor[ bNum ][ 2 ] );
1396
1397                 /* compare color */
1398                 if( rd > SOLID_EPSILON || gd > SOLID_EPSILON|| bd > SOLID_EPSILON )
1399                         return qfalse;
1400
1401                 /* okay */
1402                 return qtrue;
1403         }
1404
1405         /* compare nonsolid lightmaps */
1406         if( a->w != b->w || a->h != b->h )
1407                 return qfalse;
1408
1409         /* compare luxels */
1410         delta = 0.0;
1411         total = 0.0;
1412         for( y = 0; y < a->h; y++ )
1413         {
1414                 for( x = 0; x < a->w; x++ )
1415                 {
1416                         /* increment total */
1417                         total += 1.0;
1418
1419                         /* get luxels */
1420                         lm = a; aLuxel = BSP_LUXEL( aNum, x, y );
1421                         lm = b; bLuxel = BSP_LUXEL( bNum, x, y );
1422
1423                         /* ignore unused luxels */
1424                         if( aLuxel[ 0 ] < 0 || bLuxel[ 0 ] < 0 )
1425                                 continue;
1426
1427                         /* get deltas */
1428                         rd = fabs( aLuxel[ 0 ] - bLuxel[ 0 ] );
1429                         gd = fabs( aLuxel[ 1 ] - bLuxel[ 1 ] );
1430                         bd = fabs( aLuxel[ 2 ] - bLuxel[ 2 ] );
1431
1432                         /* 2003-09-27: compare individual luxels */
1433                         if( rd > 3.0 || gd > 3.0 || bd > 3.0 )
1434                                 return qfalse;
1435
1436                         /* compare (fixme: take into account perceptual differences) */
1437                         delta += rd * LUXEL_COLOR_FRAC;
1438                         delta += gd * LUXEL_COLOR_FRAC;
1439                         delta += bd * LUXEL_COLOR_FRAC;
1440
1441                         /* is the change too high? */
1442                         if( total > 0.0 && ((delta / total) > LUXEL_TOLERANCE) )
1443                                 return qfalse;
1444                 }
1445         }
1446
1447         /* made it this far, they must be identical (or close enough) */
1448         return qtrue;
1449 }
1450
1451
1452
1453 /*
1454 MergeBSPLuxels()
1455 merges two surface lightmaps' bsp luxels, overwriting occluded luxels
1456 */
1457
1458 static qboolean MergeBSPLuxels( rawLightmap_t *a, int aNum, rawLightmap_t *b, int bNum )
1459 {
1460         rawLightmap_t   *lm;
1461         int                             x, y;
1462         float                   luxel[ 3 ], *aLuxel, *bLuxel;
1463
1464
1465         /* basic tests */
1466         if( a->customWidth != b->customWidth || a->customHeight != b->customHeight ||
1467                 a->brightness != b->brightness ||
1468                 a->solid[ aNum ] != b->solid[ bNum ] ||
1469                 a->bspLuxels[ aNum ] == NULL || b->bspLuxels[ bNum ] == NULL )
1470                 return qfalse;
1471
1472         /* compare solid lightmaps */
1473         if( a->solid[ aNum ] && b->solid[ bNum ] )
1474         {
1475                 /* average */
1476                 VectorAdd( a->solidColor[ aNum ], b->solidColor[ bNum ], luxel );
1477                 VectorScale( luxel, 0.5f, luxel );
1478
1479                 /* copy to both */
1480                 VectorCopy( luxel, a->solidColor[ aNum ] );
1481                 VectorCopy( luxel, b->solidColor[ bNum ] );
1482
1483                 /* return to sender */
1484                 return qtrue;
1485         }
1486
1487         /* compare nonsolid lightmaps */
1488         if( a->w != b->w || a->h != b->h )
1489                 return qfalse;
1490
1491         /* merge luxels */
1492         for( y = 0; y < a->h; y++ )
1493         {
1494                 for( x = 0; x < a->w; x++ )
1495                 {
1496                         /* get luxels */
1497                         lm = a; aLuxel = BSP_LUXEL( aNum, x, y );
1498                         lm = b; bLuxel = BSP_LUXEL( bNum, x, y );
1499
1500                         /* handle occlusion mismatch */
1501                         if( aLuxel[ 0 ] < 0.0f )
1502                                 VectorCopy( bLuxel, aLuxel );
1503                         else if( bLuxel[ 0 ] < 0.0f )
1504                                 VectorCopy( aLuxel, bLuxel );
1505                         else
1506                         {
1507                                 /* average */
1508                                 VectorAdd( aLuxel, bLuxel, luxel );
1509                                 VectorScale( luxel, 0.5f, luxel );
1510
1511                                 /* debugging code */
1512                                 //%     luxel[ 2 ] += 64.0f;
1513
1514                                 /* copy to both */
1515                                 VectorCopy( luxel, aLuxel );
1516                                 VectorCopy( luxel, bLuxel );
1517                         }
1518                 }
1519         }
1520
1521         /* done */
1522         return qtrue;
1523 }
1524
1525
1526
1527 /*
1528 ApproximateLuxel()
1529 determines if a single luxel is can be approximated with the interpolated vertex rgba
1530 */
1531
1532 static qboolean ApproximateLuxel( rawLightmap_t *lm, bspDrawVert_t *dv )
1533 {
1534         int             i, x, y, d, lightmapNum;
1535         float   *luxel;
1536         vec3_t  color, vertexColor;
1537         byte    cb[ 4 ], vcb[ 4 ];
1538
1539
1540         /* find luxel xy coords */
1541         x = dv->lightmap[ 0 ][ 0 ] / superSample;
1542         y = dv->lightmap[ 0 ][ 1 ] / superSample;
1543         if( x < 0 )
1544                 x = 0;
1545         else if( x >= lm->w )
1546                 x = lm->w - 1;
1547         if( y < 0 )
1548                 y = 0;
1549         else if( y >= lm->h )
1550                 y = lm->h - 1;
1551
1552         /* walk list */
1553         for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
1554         {
1555                 /* early out */
1556                 if( lm->styles[ lightmapNum ] == LS_NONE )
1557                         continue;
1558
1559                 /* get luxel */
1560                 luxel = BSP_LUXEL( lightmapNum, x, y );
1561
1562                 /* ignore occluded luxels */
1563                 if( luxel[ 0 ] < 0.0f || luxel[ 1 ] < 0.0f || luxel[ 2 ] < 0.0f )
1564                         return qtrue;
1565
1566                 /* copy, set min color and compare */
1567                 VectorCopy( luxel, color );
1568                 VectorCopy( dv->color[ 0 ], vertexColor );
1569
1570                 /* styles are not affected by minlight */
1571                 if( lightmapNum == 0 )
1572                 {
1573                         for( i = 0; i < 3; i++ )
1574                         {
1575                                 /* set min color */
1576                                 if( color[ i ] < minLight[ i ] )
1577                                         color[ i ] = minLight[ i ];
1578                                 if( vertexColor[ i ] < minLight[ i ] )  /* note NOT minVertexLight */
1579                                         vertexColor[ i ] = minLight[ i ];
1580                         }
1581                 }
1582
1583                 /* set to bytes */
1584                 ColorToBytes( color, cb, 1.0f );
1585                 ColorToBytes( vertexColor, vcb, 1.0f );
1586
1587                 /* compare */
1588                 for( i = 0; i < 3; i++ )
1589                 {
1590                         d = cb[ i ] - vcb[ i ];
1591                         if( d < 0 )
1592                                 d *= -1;
1593                         if( d > approximateTolerance )
1594                                 return qfalse;
1595                 }
1596         }
1597
1598         /* close enough for the girls i date */
1599         return qtrue;
1600 }
1601
1602
1603
1604 /*
1605 ApproximateTriangle()
1606 determines if a single triangle can be approximated with vertex rgba
1607 */
1608
1609 static qboolean ApproximateTriangle_r( rawLightmap_t *lm, bspDrawVert_t *dv[ 3 ] )
1610 {
1611         bspDrawVert_t   mid, *dv2[ 3 ];
1612         int                             max;
1613
1614
1615         /* approximate the vertexes */
1616         if( ApproximateLuxel( lm, dv[ 0 ] ) == qfalse )
1617                 return qfalse;
1618         if( ApproximateLuxel( lm, dv[ 1 ] ) == qfalse )
1619                 return qfalse;
1620         if( ApproximateLuxel( lm, dv[ 2 ] ) == qfalse )
1621                 return qfalse;
1622
1623         /* subdivide calc */
1624         {
1625                 int                     i;
1626                 float           dx, dy, dist, maxDist;
1627
1628
1629                 /* find the longest edge and split it */
1630                 max = -1;
1631                 maxDist = 0;
1632                 for( i = 0; i < 3; i++ )
1633                 {
1634                         dx = dv[ i ]->lightmap[ 0 ][ 0 ] - dv[ (i + 1) % 3 ]->lightmap[ 0 ][ 0 ];
1635                         dy = dv[ i ]->lightmap[ 0 ][ 1 ] - dv[ (i + 1) % 3 ]->lightmap[ 0 ][ 1 ];
1636                         dist = sqrt( (dx * dx) + (dy * dy) );
1637                         if( dist > maxDist )
1638                         {
1639                                 maxDist = dist;
1640                                 max = i;
1641                         }
1642                 }
1643
1644                 /* try to early out */
1645                 if( i < 0 || maxDist < subdivideThreshold )
1646                         return qtrue;
1647         }
1648
1649         /* split the longest edge and map it */
1650         LerpDrawVert( dv[ max ], dv[ (max + 1) % 3 ], &mid );
1651         if( ApproximateLuxel( lm, &mid ) == qfalse )
1652                 return qfalse;
1653
1654         /* recurse to first triangle */
1655         VectorCopy( dv, dv2 );
1656         dv2[ max ] = &mid;
1657         if( ApproximateTriangle_r( lm, dv2 ) == qfalse )
1658                 return qfalse;
1659
1660         /* recurse to second triangle */
1661         VectorCopy( dv, dv2 );
1662         dv2[ (max + 1) % 3 ] = &mid;
1663         return ApproximateTriangle_r( lm, dv2 );
1664 }
1665
1666
1667
1668 /*
1669 ApproximateLightmap()
1670 determines if a raw lightmap can be approximated sufficiently with vertex colors
1671 */
1672
1673 static qboolean ApproximateLightmap( rawLightmap_t *lm )
1674 {
1675         int                                     n, num, i, x, y, pw[ 5 ], r;
1676         bspDrawSurface_t        *ds;
1677         surfaceInfo_t           *info;
1678         mesh_t                          src, *subdivided, *mesh;
1679         bspDrawVert_t           *verts, *dv[ 3 ];
1680         qboolean                        approximated;
1681
1682
1683         /* approximating? */
1684         if( approximateTolerance <= 0 )
1685                 return qfalse;
1686
1687         /* test for jmonroe */
1688         #if 0
1689                 /* don't approx lightmaps with styled twins */
1690                 if( lm->numStyledTwins > 0 )
1691                         return qfalse;
1692
1693                 /* don't approx lightmaps with styles */
1694                 for( i = 1; i < MAX_LIGHTMAPS; i++ )
1695                 {
1696                         if( lm->styles[ i ] != LS_NONE )
1697                                 return qfalse;
1698                 }
1699         #endif
1700
1701         /* assume reduced until shadow detail is found */
1702         approximated = qtrue;
1703
1704         /* walk the list of surfaces on this raw lightmap */
1705         for( n = 0; n < lm->numLightSurfaces; n++ )
1706         {
1707                 /* get surface */
1708                 num = lightSurfaces[ lm->firstLightSurface + n ];
1709                 ds = &bspDrawSurfaces[ num ];
1710                 info = &surfaceInfos[ num ];
1711
1712                 /* assume not-reduced initially */
1713                 info->approximated = qfalse;
1714
1715                 /* bail if lightmap doesn't match up */
1716                 if( info->lm != lm )
1717                         continue;
1718
1719                 /* bail if not vertex lit */
1720                 if( info->si->noVertexLight )
1721                         continue;
1722
1723                 /* assume that surfaces whose bounding boxes is smaller than 2x samplesize will be forced to vertex */
1724                 if( (info->maxs[ 0 ] - info->mins[ 0 ]) <= (2.0f * info->sampleSize) &&
1725                         (info->maxs[ 1 ] - info->mins[ 1 ]) <= (2.0f * info->sampleSize) &&
1726                         (info->maxs[ 2 ] - info->mins[ 2 ]) <= (2.0f * info->sampleSize) )
1727                 {
1728                         info->approximated = qtrue;
1729                         numSurfsVertexForced++;
1730                         continue;
1731                 }
1732
1733                 /* handle the triangles */
1734                 switch( ds->surfaceType )
1735                 {
1736                         case MST_PLANAR:
1737                                 /* get verts */
1738                                 verts = yDrawVerts + ds->firstVert;
1739
1740                                 /* map the triangles */
1741                                 info->approximated = qtrue;
1742                                 for( i = 0; i < ds->numIndexes && info->approximated; i += 3 )
1743                                 {
1744                                         dv[ 0 ] = &verts[ bspDrawIndexes[ ds->firstIndex + i ] ];
1745                                         dv[ 1 ] = &verts[ bspDrawIndexes[ ds->firstIndex + i + 1 ] ];
1746                                         dv[ 2 ] = &verts[ bspDrawIndexes[ ds->firstIndex + i + 2 ] ];
1747                                         info->approximated = ApproximateTriangle_r( lm, dv );
1748                                 }
1749                                 break;
1750
1751                         case MST_PATCH:
1752                                 /* make a mesh from the drawsurf */
1753                                 src.width = ds->patchWidth;
1754                                 src.height = ds->patchHeight;
1755                                 src.verts = &yDrawVerts[ ds->firstVert ];
1756                                 //%     subdivided = SubdivideMesh( src, 8, 512 );
1757                                 subdivided = SubdivideMesh2( src, info->patchIterations );
1758
1759                                 /* fit it to the curve and remove colinear verts on rows/columns */
1760                                 PutMeshOnCurve( *subdivided );
1761                                 mesh = RemoveLinearMeshColumnsRows( subdivided );
1762                                 FreeMesh( subdivided );
1763
1764                                 /* get verts */
1765                                 verts = mesh->verts;
1766
1767                                 /* map the mesh quads */
1768                                 info->approximated = qtrue;
1769                                 for( y = 0; y < (mesh->height - 1) && info->approximated; y++ )
1770                                 {
1771                                         for( x = 0; x < (mesh->width - 1) && info->approximated; x++ )
1772                                         {
1773                                                 /* set indexes */
1774                                                 pw[ 0 ] = x + (y * mesh->width);
1775                                                 pw[ 1 ] = x + ((y + 1) * mesh->width);
1776                                                 pw[ 2 ] = x + 1 + ((y + 1) * mesh->width);
1777                                                 pw[ 3 ] = x + 1 + (y * mesh->width);
1778                                                 pw[ 4 ] = x + (y * mesh->width);        /* same as pw[ 0 ] */
1779
1780                                                 /* set radix */
1781                                                 r = (x + y) & 1;
1782
1783                                                 /* get drawverts and map first triangle */
1784                                                 dv[ 0 ] = &verts[ pw[ r + 0 ] ];
1785                                                 dv[ 1 ] = &verts[ pw[ r + 1 ] ];
1786                                                 dv[ 2 ] = &verts[ pw[ r + 2 ] ];
1787                                                 info->approximated = ApproximateTriangle_r( lm, dv );
1788
1789                                                 /* get drawverts and map second triangle */
1790                                                 dv[ 0 ] = &verts[ pw[ r + 0 ] ];
1791                                                 dv[ 1 ] = &verts[ pw[ r + 2 ] ];
1792                                                 dv[ 2 ] = &verts[ pw[ r + 3 ] ];
1793                                                 if( info->approximated )
1794                                                         info->approximated = ApproximateTriangle_r( lm, dv );
1795                                         }
1796                                 }
1797
1798                                 /* free the mesh */
1799                                 FreeMesh( mesh );
1800                                 break;
1801
1802                         default:
1803                                 break;
1804                 }
1805
1806                 /* reduced? */
1807                 if( info->approximated == qfalse )
1808                         approximated = qfalse;
1809                 else
1810                         numSurfsVertexApproximated++;
1811         }
1812
1813         /* return */
1814         return approximated;
1815 }
1816
1817
1818
1819 /*
1820 TestOutLightmapStamp()
1821 tests a stamp on a given lightmap for validity
1822 */
1823
1824 static qboolean TestOutLightmapStamp( rawLightmap_t *lm, int lightmapNum, outLightmap_t *olm, int x, int y )
1825 {
1826         int                     sx, sy, ox, oy, offset;
1827         float           *luxel;
1828
1829
1830         /* bounds check */
1831         if( x < 0 || y < 0 || (x + lm->w) > olm->customWidth || (y + lm->h) > olm->customHeight )
1832                 return qfalse;
1833
1834         /* solid lightmaps test a 1x1 stamp */
1835         if( lm->solid[ lightmapNum ] )
1836         {
1837                 offset = (y * olm->customWidth) + x;
1838                 if( olm->lightBits[ offset >> 3 ] & (1 << (offset & 7)) )
1839                         return qfalse;
1840                 return qtrue;
1841         }
1842
1843         /* test the stamp */
1844         for( sy = 0; sy < lm->h; sy++ )
1845         {
1846                 for( sx = 0; sx < lm->w; sx++ )
1847                 {
1848                         /* get luxel */
1849                         luxel = BSP_LUXEL( lightmapNum, sx, sy );
1850                         if( luxel[ 0 ] < 0.0f )
1851                                 continue;
1852
1853                         /* get bsp lightmap coords and test */
1854                         ox = x + sx;
1855                         oy = y + sy;
1856                         offset = (oy * olm->customWidth) + ox;
1857                         if( olm->lightBits[ offset >> 3 ] & (1 << (offset & 7)) )
1858                                 return qfalse;
1859                 }
1860         }
1861
1862         /* stamp is empty */
1863         return qtrue;
1864 }
1865
1866
1867
1868 /*
1869 SetupOutLightmap()
1870 sets up an output lightmap
1871 */
1872
1873 static void SetupOutLightmap( rawLightmap_t *lm, outLightmap_t *olm )
1874 {
1875         /* dummy check */
1876         if( lm == NULL || olm == NULL )
1877                 return;
1878
1879         /* is this a "normal" bsp-stored lightmap? */
1880         if( (lm->customWidth == game->lightmapSize && lm->customHeight == game->lightmapSize) || externalLightmaps )
1881         {
1882                 olm->lightmapNum = numBSPLightmaps;
1883                 numBSPLightmaps++;
1884
1885                 /* lightmaps are interleaved with light direction maps */
1886                 if( deluxemap )
1887                         numBSPLightmaps++;
1888         }
1889         else
1890                 olm->lightmapNum = -3;
1891
1892         /* set external lightmap number */
1893         olm->extLightmapNum = -1;
1894
1895         /* set it up */
1896         olm->numLightmaps = 0;
1897         olm->customWidth = lm->customWidth;
1898         olm->customHeight = lm->customHeight;
1899         olm->freeLuxels = olm->customWidth * olm->customHeight;
1900         olm->numShaders = 0;
1901
1902         /* allocate buffers */
1903         olm->lightBits = safe_malloc( (olm->customWidth * olm->customHeight / 8) + 8 );
1904         memset( olm->lightBits, 0, (olm->customWidth * olm->customHeight / 8) + 8 );
1905         olm->bspLightBytes = safe_malloc( olm->customWidth * olm->customHeight * 3 );
1906         memset( olm->bspLightBytes, 0, olm->customWidth * olm->customHeight * 3 );
1907         if( deluxemap )
1908         {
1909                 olm->bspDirBytes = safe_malloc( olm->customWidth * olm->customHeight * 3 );
1910                 memset( olm->bspDirBytes, 0, olm->customWidth * olm->customHeight * 3 );
1911         }
1912 }
1913
1914
1915
1916 /*
1917 FindOutLightmaps()
1918 for a given surface lightmap, find output lightmap pages and positions for it
1919 */
1920
1921 #define LIGHTMAP_RESERVE_COUNT 1
1922 static void FindOutLightmaps( rawLightmap_t *lm )
1923 {
1924         int                                     i, j, k, lightmapNum, xMax, yMax, x, y, sx, sy, ox, oy, offset, temp;
1925         outLightmap_t           *olm;
1926         surfaceInfo_t           *info;
1927         float                           *luxel, *deluxel;
1928         vec3_t                          color, direction;
1929         byte                            *pixel;
1930         qboolean                        ok;
1931
1932
1933         /* set default lightmap number (-3 = LIGHTMAP_BY_VERTEX) */
1934         for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
1935                 lm->outLightmapNums[ lightmapNum ] = -3;
1936
1937         /* can this lightmap be approximated with vertex color? */
1938         if( ApproximateLightmap( lm ) )
1939                 return;
1940
1941         /* walk list */
1942         for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
1943         {
1944                 /* early out */
1945                 if( lm->styles[ lightmapNum ] == LS_NONE )
1946                         continue;
1947
1948                 /* don't store twinned lightmaps */
1949                 if( lm->twins[ lightmapNum ] != NULL )
1950                         continue;
1951
1952                 /* if this is a styled lightmap, try some normalized locations first */
1953                 ok = qfalse;
1954                 if( lightmapNum > 0 && outLightmaps != NULL )
1955                 {
1956                         /* loop twice */
1957                         for( j = 0; j < 2; j++ )
1958                         {
1959                                 /* try identical position */
1960                                 for( i = 0; i < numOutLightmaps; i++ )
1961                                 {
1962                                         /* get the output lightmap */
1963                                         olm = &outLightmaps[ i ];
1964
1965                                         /* simple early out test */
1966                                         if( olm->freeLuxels < lm->used )
1967                                                 continue;
1968
1969                                         /* don't store non-custom raw lightmaps on custom bsp lightmaps */
1970                                         if( olm->customWidth != lm->customWidth ||
1971                                                 olm->customHeight != lm->customHeight )
1972                                                 continue;
1973
1974                                         /* try identical */
1975                                         if( j == 0 )
1976                                         {
1977                                                 x = lm->lightmapX[ 0 ];
1978                                                 y = lm->lightmapY[ 0 ];
1979                                                 ok = TestOutLightmapStamp( lm, lightmapNum, olm, x, y );
1980                                         }
1981
1982                                         /* try shifting */
1983                                         else
1984                                         {
1985                                                 for( sy = -1; sy <= 1; sy++ )
1986                                                 {
1987                                                         for( sx = -1; sx <= 1; sx++ )
1988                                                         {
1989                                                                 x = lm->lightmapX[ 0 ] + sx * (olm->customWidth >> 1);  //%     lm->w;
1990                                                                 y = lm->lightmapY[ 0 ] + sy * (olm->customHeight >> 1); //%     lm->h;
1991                                                                 ok = TestOutLightmapStamp( lm, lightmapNum, olm, x, y );
1992
1993                                                                 if( ok )
1994                                                                         break;
1995                                                         }
1996
1997                                                         if( ok )
1998                                                                 break;
1999                                                 }
2000                                         }
2001
2002                                         if( ok )
2003                                                 break;
2004                                 }
2005
2006                                 if( ok )
2007                                         break;
2008                         }
2009                 }
2010
2011                 /* try normal placement algorithm */
2012                 if( ok == qfalse )
2013                 {
2014                         /* reset origin */
2015                         x = 0;
2016                         y = 0;
2017
2018                         /* walk the list of lightmap pages */
2019                         for( i = ((noLightmapSearch && numOutLightmaps >= LIGHTMAP_RESERVE_COUNT) ? (numOutLightmaps - LIGHTMAP_RESERVE_COUNT) : 0); i < numOutLightmaps; i++ )
2020                         {
2021                                 /* get the output lightmap */
2022                                 olm = &outLightmaps[ i ];
2023
2024                                 /* simple early out test */
2025                                 if( olm->freeLuxels < lm->used )
2026                                         continue;
2027
2028                                 /* don't store non-custom raw lightmaps on custom bsp lightmaps */
2029                                 if( olm->customWidth != lm->customWidth ||
2030                                         olm->customHeight != lm->customHeight )
2031                                         continue;
2032
2033                                 /* set maxs */
2034                                 if( lm->solid[ lightmapNum ] )
2035                                 {
2036                                         xMax = olm->customWidth;
2037                                         yMax = olm->customHeight;
2038                                 }
2039                                 else
2040                                 {
2041                                         xMax = (olm->customWidth - lm->w) + 1;
2042                                         yMax = (olm->customHeight - lm->h) + 1;
2043                                 }
2044
2045                                 /* walk the origin around the lightmap */
2046                                 for( y = 0; y < yMax; y++ )
2047                                 {
2048                                         for( x = 0; x < xMax; x++ )
2049                                         {
2050                                                 /* find a fine tract of lauhnd */
2051                                                 ok = TestOutLightmapStamp( lm, lightmapNum, olm, x, y );
2052
2053                                                 if( ok )
2054                                                         break;
2055                                         }
2056
2057                                         if( ok )
2058                                                 break;
2059                                 }
2060
2061                                 if( ok )
2062                                         break;
2063
2064                                 /* reset x and y */
2065                                 x = 0;
2066                                 y = 0;
2067                         }
2068                 }
2069
2070                 /* no match? */
2071                 if( ok == qfalse )
2072                 {
2073                         /* allocate LIGHTMAP_RESERVE_COUNT new output lightmaps */
2074                         numOutLightmaps += LIGHTMAP_RESERVE_COUNT;
2075                         olm = safe_malloc( numOutLightmaps * sizeof( outLightmap_t ) );
2076                         if( outLightmaps != NULL && numOutLightmaps > LIGHTMAP_RESERVE_COUNT )
2077                         {
2078                                 memcpy( olm, outLightmaps, (numOutLightmaps - 2) * sizeof( outLightmap_t ) );
2079                                 free( outLightmaps );
2080                         }
2081                         outLightmaps = olm;
2082
2083                         /* initialize both out lightmaps */
2084                         for(k = numOutLightmaps - LIGHTMAP_RESERVE_COUNT; k < numOutLightmaps; ++k)
2085                                 SetupOutLightmap( lm, &outLightmaps[ k ] );
2086
2087                         /* set out lightmap */
2088                         i = numOutLightmaps - LIGHTMAP_RESERVE_COUNT;
2089                         olm = &outLightmaps[ i ];
2090
2091                         /* set stamp xy origin to the first surface lightmap */
2092                         if( lightmapNum > 0 )
2093                         {
2094                                 x = lm->lightmapX[ 0 ];
2095                                 y = lm->lightmapY[ 0 ];
2096                         }
2097                 }
2098
2099                 /* if this is a style-using lightmap, it must be exported */
2100                 if( lightmapNum > 0 && game->load != LoadRBSPFile )
2101                         olm->extLightmapNum = 0;
2102
2103                 /* add the surface lightmap to the bsp lightmap */
2104                 lm->outLightmapNums[ lightmapNum ] = i;
2105                 lm->lightmapX[ lightmapNum ] = x;
2106                 lm->lightmapY[ lightmapNum ] = y;
2107                 olm->numLightmaps++;
2108
2109                 /* add shaders */
2110                 for( i = 0; i < lm->numLightSurfaces; i++ )
2111                 {
2112                         /* get surface info */
2113                         info = &surfaceInfos[ lightSurfaces[ lm->firstLightSurface + i ] ];
2114
2115                         /* test for shader */
2116                         for( j = 0; j < olm->numShaders; j++ )
2117                         {
2118                                 if( olm->shaders[ j ] == info->si )
2119                                         break;
2120                         }
2121
2122                         /* if it doesn't exist, add it */
2123                         if( j >= olm->numShaders && olm->numShaders < MAX_LIGHTMAP_SHADERS )
2124                         {
2125                                 olm->shaders[ olm->numShaders ] = info->si;
2126                                 olm->numShaders++;
2127                                 numLightmapShaders++;
2128                         }
2129                 }
2130
2131                 /* set maxs */
2132                 if( lm->solid[ lightmapNum ] )
2133                 {
2134                         xMax = 1;
2135                         yMax = 1;
2136                 }
2137                 else
2138                 {
2139                         xMax = lm->w;
2140                         yMax = lm->h;
2141                 }
2142
2143                 /* mark the bits used */
2144                 for( y = 0; y < yMax; y++ )
2145                 {
2146                         for( x = 0; x < xMax; x++ )
2147                         {
2148                                 /* get luxel */
2149                                 luxel = BSP_LUXEL( lightmapNum, x, y );
2150                                 deluxel = BSP_DELUXEL( x, y );
2151                                 if( luxel[ 0 ] < 0.0f && !lm->solid[ lightmapNum ])
2152                                         continue;
2153
2154                                 /* set minimum light */
2155                                 if( lm->solid[ lightmapNum ] )
2156                                 {
2157                                         if( debug )
2158                                                 VectorSet( color, 255.0f, 0.0f, 0.0f );
2159                                         else
2160                                                 VectorCopy( lm->solidColor[ lightmapNum ], color );
2161                                 }
2162                                 else
2163                                         VectorCopy( luxel, color );
2164
2165                                 /* styles are not affected by minlight */
2166                                 if( lightmapNum == 0 )
2167                                 {
2168                                         for( i = 0; i < 3; i++ )
2169                                         {
2170                                                 if( color[ i ] < minLight[ i ] )
2171                                                         color[ i ] = minLight[ i ];
2172                                         }
2173                                 }
2174
2175                                 /* get bsp lightmap coords  */
2176                                 ox = x + lm->lightmapX[ lightmapNum ];
2177                                 oy = y + lm->lightmapY[ lightmapNum ];
2178                                 offset = (oy * olm->customWidth) + ox;
2179
2180                                 /* flag pixel as used */
2181                                 olm->lightBits[ offset >> 3 ] |= (1 << (offset & 7));
2182                                 olm->freeLuxels--;
2183
2184                                 /* store color */
2185                                 pixel = olm->bspLightBytes + (((oy * olm->customWidth) + ox) * 3);
2186                                 ColorToBytes( color, pixel, lm->brightness );
2187
2188                                 /* store direction */
2189                                 if( deluxemap )
2190                                 {
2191                                         /* normalize average light direction */
2192                                         if( VectorNormalize( deluxel, direction ) )
2193                                         {
2194                                                 /* encode [-1,1] in [0,255] */
2195                                                 pixel = olm->bspDirBytes + (((oy * olm->customWidth) + ox) * 3);
2196                                                 for( i = 0; i < 3; i++ )
2197                                                 {
2198                                                         temp = (direction[ i ] + 1.0f) * 127.5f;
2199                                                         if( temp < 0 )
2200                                                                 pixel[ i ] = 0;
2201                                                         else if( temp > 255 )
2202                                                                 pixel[ i ] = 255;
2203                                                         else
2204                                                                 pixel[ i ] = temp;
2205                                                 }
2206                                         }
2207                                 }
2208                         }
2209                 }
2210         }
2211 }
2212
2213
2214
2215 /*
2216 CompareRawLightmap()
2217 compare function for qsort()
2218 */
2219
2220 static int CompareRawLightmap( const void *a, const void *b )
2221 {
2222         rawLightmap_t   *alm, *blm;
2223         surfaceInfo_t   *aInfo, *bInfo;
2224         int                             i, min, diff;
2225
2226
2227         /* get lightmaps */
2228         alm = &rawLightmaps[ *((int*) a) ];
2229         blm = &rawLightmaps[ *((int*) b) ];
2230
2231         /* get min number of surfaces */
2232         min = (alm->numLightSurfaces < blm->numLightSurfaces ? alm->numLightSurfaces : blm->numLightSurfaces);
2233
2234         /* iterate */
2235         for( i = 0; i < min; i++ )
2236         {
2237                 /* get surface info */
2238                 aInfo = &surfaceInfos[ lightSurfaces[ alm->firstLightSurface + i ] ];
2239                 bInfo = &surfaceInfos[ lightSurfaces[ blm->firstLightSurface + i ] ];
2240
2241                 /* compare shader names */
2242                 diff = strcmp( aInfo->si->shader, bInfo->si->shader );
2243                 if( diff != 0 )
2244                         return diff;
2245         }
2246
2247         /* test style count */
2248         diff = 0;
2249         for( i = 0; i < MAX_LIGHTMAPS; i++ )
2250                 diff += blm->styles[ i ] - alm->styles[ i ];
2251         if( diff )
2252                 return diff;
2253
2254         /* compare size */
2255         diff = (blm->w * blm->h) - (alm->w * alm->h);
2256         if( diff != 0 )
2257                 return diff;
2258
2259         /* must be equivalent */
2260         return 0;
2261 }
2262
2263
2264
2265 /*
2266 StoreSurfaceLightmaps()
2267 stores the surface lightmaps into the bsp as byte rgb triplets
2268 */
2269
2270 void StoreSurfaceLightmaps( void )
2271 {
2272         int                                     i, j, k, x, y, lx, ly, sx, sy, *cluster, mappedSamples;
2273         int                                     style, size, lightmapNum, lightmapNum2;
2274         float                           *normal, *luxel, *bspLuxel, *bspLuxel2, *radLuxel, samples, occludedSamples;
2275         vec3_t                          sample, occludedSample, dirSample, colorMins, colorMaxs;
2276         float                           *deluxel, *bspDeluxel, *bspDeluxel2;
2277         byte                            *lb;
2278         int                                     numUsed, numTwins, numTwinLuxels, numStored;
2279         float                           lmx, lmy, efficiency;
2280         vec3_t                          color;
2281         bspDrawSurface_t        *ds, *parent, dsTemp;
2282         surfaceInfo_t           *info;
2283         rawLightmap_t           *lm, *lm2;
2284         outLightmap_t           *olm;
2285         bspDrawVert_t           *dv, *ydv, *dvParent;
2286         char                            dirname[ 1024 ], filename[ 1024 ];
2287         shaderInfo_t            *csi;
2288         char                            lightmapName[ 128 ];
2289         char                            *rgbGenValues[ 256 ];
2290         char                            *alphaGenValues[ 256 ];
2291
2292
2293         /* note it */
2294         Sys_Printf( "--- StoreSurfaceLightmaps ---\n");
2295
2296         /* setup */
2297         if(lmCustomDir)
2298         {
2299                 strcpy( dirname, lmCustomDir );
2300         }
2301         else
2302         {
2303                 strcpy( dirname, source );
2304                 StripExtension( dirname );
2305         }
2306         memset( rgbGenValues, 0, sizeof( rgbGenValues ) );
2307         memset( alphaGenValues, 0, sizeof( alphaGenValues ) );
2308
2309         /* -----------------------------------------------------------------
2310            average the sampled luxels into the bsp luxels
2311            ----------------------------------------------------------------- */
2312
2313         /* note it */
2314         Sys_Printf( "Subsampling..." );
2315
2316         /* walk the list of raw lightmaps */
2317         numUsed = 0;
2318         numTwins = 0;
2319         numTwinLuxels = 0;
2320         numSolidLightmaps = 0;
2321         for( i = 0; i < numRawLightmaps; i++ )
2322         {
2323                 /* get lightmap */
2324                 lm = &rawLightmaps[ i ];
2325
2326                 /* walk individual lightmaps */
2327                 for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
2328                 {
2329                         /* early outs */
2330                         if( lm->superLuxels[ lightmapNum ] == NULL )
2331                                 continue;
2332
2333                         /* allocate bsp luxel storage */
2334                         if( lm->bspLuxels[ lightmapNum ] == NULL )
2335                         {
2336                                 size = lm->w * lm->h * BSP_LUXEL_SIZE * sizeof( float );
2337                                 lm->bspLuxels[ lightmapNum ] = safe_malloc( size );
2338                                 memset( lm->bspLuxels[ lightmapNum ], 0, size );
2339                         }
2340
2341                         /* allocate radiosity lightmap storage */
2342                         if( bounce )
2343                         {
2344                                 size = lm->w * lm->h * RAD_LUXEL_SIZE * sizeof( float );
2345                                 if( lm->radLuxels[ lightmapNum ] == NULL )
2346                                         lm->radLuxels[ lightmapNum ] = safe_malloc( size );
2347                                 memset( lm->radLuxels[ lightmapNum ], 0, size );
2348                         }
2349
2350                         /* average supersampled luxels */
2351                         for( y = 0; y < lm->h; y++ )
2352                         {
2353                                 for( x = 0; x < lm->w; x++ )
2354                                 {
2355                                         /* subsample */
2356                                         samples = 0.0f;
2357                                         occludedSamples = 0.0f;
2358                                         mappedSamples = 0;
2359                                         VectorClear( sample );
2360                                         VectorClear( occludedSample );
2361                                         VectorClear( dirSample );
2362                                         for( ly = 0; ly < superSample; ly++ )
2363                                         {
2364                                                 for( lx = 0; lx < superSample; lx++ )
2365                                                 {
2366                                                         /* sample luxel */
2367                                                         sx = x * superSample + lx;
2368                                                         sy = y * superSample + ly;
2369                                                         luxel = SUPER_LUXEL( lightmapNum, sx, sy );
2370                                                         deluxel = SUPER_DELUXEL( sx, sy );
2371                                                         normal = SUPER_NORMAL( sx, sy );
2372                                                         cluster = SUPER_CLUSTER( sx, sy );
2373
2374                                                         /* sample deluxemap */
2375                                                         if( deluxemap && lightmapNum == 0 )
2376                                                                 VectorAdd( dirSample, deluxel, dirSample );
2377
2378                                                         /* keep track of used/occluded samples */
2379                                                         if( *cluster != CLUSTER_UNMAPPED )
2380                                                                 mappedSamples++;
2381
2382                                                         /* handle lightmap border? */
2383                                                         if( lightmapBorder && (sx == 0 || sx == (lm->sw - 1) || sy == 0 || sy == (lm->sh - 1) ) && luxel[ 3 ] > 0.0f )
2384                                                         {
2385                                                                 VectorSet( sample, 255.0f, 0.0f, 0.0f );
2386                                                                 samples += 1.0f;
2387                                                         }
2388
2389                                                         /* handle debug */
2390                                                         else if( debug && *cluster < 0 )
2391                                                         {
2392                                                                 if( *cluster == CLUSTER_UNMAPPED )
2393                                                                         VectorSet( luxel, 255, 204, 0 );
2394                                                                 else if( *cluster == CLUSTER_OCCLUDED )
2395                                                                         VectorSet( luxel, 255, 0, 255 );
2396                                                                 else if( *cluster == CLUSTER_FLOODED )
2397                                                                         VectorSet( luxel, 0, 32, 255 );
2398                                                                 VectorAdd( occludedSample, luxel, occludedSample );
2399                                                                 occludedSamples += 1.0f;
2400                                                         }
2401
2402                                                         /* normal luxel handling */
2403                                                         else if( luxel[ 3 ] > 0.0f )
2404                                                         {
2405                                                                 /* handle lit or flooded luxels */
2406                                                                 if( *cluster > 0 || *cluster == CLUSTER_FLOODED )
2407                                                                 {
2408                                                                         VectorAdd( sample, luxel, sample );
2409                                                                         samples += luxel[ 3 ];
2410                                                                 }
2411
2412                                                                 /* handle occluded or unmapped luxels */
2413                                                                 else
2414                                                                 {
2415                                                                         VectorAdd( occludedSample, luxel, occludedSample );
2416                                                                         occludedSamples += luxel[ 3 ];
2417                                                                 }
2418
2419                                                                 /* handle style debugging */
2420                                                                 if( debug && lightmapNum > 0 && x < 2 && y < 2 )
2421                                                                 {
2422                                                                         VectorCopy( debugColors[ 0 ], sample );
2423                                                                         samples = 1;
2424                                                                 }
2425                                                         }
2426                                                 }
2427                                         }
2428
2429                                         /* only use occluded samples if necessary */
2430                                         if( samples <= 0.0f )
2431                                         {
2432                                                 VectorCopy( occludedSample, sample );
2433                                                 samples = occludedSamples;
2434                                         }
2435
2436                                         /* get luxels */
2437                                         luxel = SUPER_LUXEL( lightmapNum, x, y );
2438                                         deluxel = SUPER_DELUXEL( x, y );
2439
2440                                         /* store light direction */
2441                                         if( deluxemap && lightmapNum == 0 )
2442                                                 VectorCopy( dirSample, deluxel );
2443
2444                                         /* store the sample back in super luxels */
2445                                         if( samples > 0.01f )
2446                                         {
2447                                                 VectorScale( sample, (1.0f / samples), luxel );
2448                                                 luxel[ 3 ] = 1.0f;
2449                                         }
2450
2451                                         /* if any samples were mapped in any way, store ambient color */
2452                                         else if( mappedSamples > 0 )
2453                                         {
2454                                                 if( lightmapNum == 0 )
2455                                                         VectorCopy( ambientColor, luxel );
2456                                                 else
2457                                                         VectorClear( luxel );
2458                                                 luxel[ 3 ] = 1.0f;
2459                                         }
2460
2461                                         /* store a bogus value to be fixed later */
2462                                         else
2463                                         {
2464                                                 VectorClear( luxel );
2465                                                 luxel[ 3 ] = -1.0f;
2466                                         }
2467                                 }
2468                         }
2469
2470                         /* setup */
2471                         lm->used = 0;
2472                         ClearBounds( colorMins, colorMaxs );
2473
2474                         /* clean up and store into bsp luxels */
2475                         for( y = 0; y < lm->h; y++ )
2476                         {
2477                                 for( x = 0; x < lm->w; x++ )
2478                                 {
2479                                         /* get luxels */
2480                                         luxel = SUPER_LUXEL( lightmapNum, x, y );
2481                                         deluxel = SUPER_DELUXEL( x, y );
2482
2483                                         /* copy light direction */
2484                                         if( deluxemap && lightmapNum == 0 )
2485                                                 VectorCopy( deluxel, dirSample );
2486
2487                                         /* is this a valid sample? */
2488                                         if( luxel[ 3 ] > 0.0f )
2489                                         {
2490                                                 VectorCopy( luxel, sample );
2491                                                 samples = luxel[ 3 ];
2492                                                 numUsed++;
2493                                                 lm->used++;
2494
2495                                                 /* fix negative samples */
2496                                                 for( j = 0; j < 3; j++ )
2497                                                 {
2498                                                         if( sample[ j ] < 0.0f )
2499                                                                 sample[ j ] = 0.0f;
2500                                                 }
2501                                         }
2502                                         else
2503                                         {
2504                                                 /* nick an average value from the neighbors */
2505                                                 VectorClear( sample );
2506                                                 VectorClear( dirSample );
2507                                                 samples = 0.0f;
2508
2509                                                 /* fixme: why is this disabled?? */
2510                                                 for( sy = (y - 1); sy <= (y + 1); sy++ )
2511                                                 {
2512                                                         if( sy < 0 || sy >= lm->h )
2513                                                                 continue;
2514
2515                                                         for( sx = (x - 1); sx <= (x + 1); sx++ )
2516                                                         {
2517                                                                 if( sx < 0 || sx >= lm->w || (sx == x && sy == y) )
2518                                                                         continue;
2519
2520                                                                 /* get neighbor's particulars */
2521                                                                 luxel = SUPER_LUXEL( lightmapNum, sx, sy );
2522                                                                 if( luxel[ 3 ] < 0.0f )
2523                                                                         continue;
2524                                                                 VectorAdd( sample, luxel, sample );
2525                                                                 samples += luxel[ 3 ];
2526                                                         }
2527                                                 }
2528
2529                                                 /* no samples? */
2530                                                 if( samples == 0.0f )
2531                                                 {
2532                                                         VectorSet( sample, -1.0f, -1.0f, -1.0f );
2533                                                         samples = 1.0f;
2534                                                 }
2535                                                 else
2536                                                 {
2537                                                         numUsed++;
2538                                                         lm->used++;
2539
2540                                                         /* fix negative samples */
2541                                                         for( j = 0; j < 3; j++ )
2542                                                         {
2543                                                                 if( sample[ j ] < 0.0f )
2544                                                                         sample[ j ] = 0.0f;
2545                                                         }
2546                                                 }
2547                                         }
2548
2549                                         /* scale the sample */
2550                                         VectorScale( sample, (1.0f / samples), sample );
2551
2552                                         /* store the sample in the radiosity luxels */
2553                                         if( bounce > 0 )
2554                                         {
2555                                                 radLuxel = RAD_LUXEL( lightmapNum, x, y );
2556                                                 VectorCopy( sample, radLuxel );
2557
2558                                                 /* if only storing bounced light, early out here */
2559                                                 if( bounceOnly && !bouncing )
2560                                                         continue;
2561                                         }
2562
2563                                         /* store the sample in the bsp luxels */
2564                                         bspLuxel = BSP_LUXEL( lightmapNum, x, y );
2565                                         bspDeluxel = BSP_DELUXEL( x, y );
2566
2567                                         VectorAdd( bspLuxel, sample, bspLuxel );
2568                                         if( deluxemap && lightmapNum == 0 )
2569                                                 VectorAdd( bspDeluxel, dirSample, bspDeluxel );
2570
2571                                         /* add color to bounds for solid checking */
2572                                         if( samples > 0.0f )
2573                                                 AddPointToBounds( bspLuxel, colorMins, colorMaxs );
2574                                 }
2575                         }
2576
2577                         /* set solid color */
2578                         lm->solid[ lightmapNum ] = qfalse;
2579                         VectorAdd( colorMins, colorMaxs, lm->solidColor[ lightmapNum ] );
2580                         VectorScale( lm->solidColor[ lightmapNum ], 0.5f, lm->solidColor[ lightmapNum ] );
2581
2582                         /* nocollapse prevents solid lightmaps */
2583                         if( noCollapse == qfalse )
2584                         {
2585                                 /* check solid color */
2586                                 VectorSubtract( colorMaxs, colorMins, sample );
2587                                 if( (sample[ 0 ] <= SOLID_EPSILON && sample[ 1 ] <= SOLID_EPSILON && sample[ 2 ] <= SOLID_EPSILON) ||
2588                                         (lm->w <= 2 && lm->h <= 2) )    /* small lightmaps get forced to solid color */
2589                                 {
2590                                         /* set to solid */
2591                                         VectorCopy( colorMins, lm->solidColor[ lightmapNum ] );
2592                                         lm->solid[ lightmapNum ] = qtrue;
2593                                         numSolidLightmaps++;
2594                                 }
2595
2596                                 /* if all lightmaps aren't solid, then none of them are solid */
2597                                 if( lm->solid[ lightmapNum ] != lm->solid[ 0 ] )
2598                                 {
2599                                         for( y = 0; y < MAX_LIGHTMAPS; y++ )
2600                                         {
2601                                                 if( lm->solid[ y ] )
2602                                                         numSolidLightmaps--;
2603                                                 lm->solid[ y ] = qfalse;
2604                                         }
2605                                 }
2606                         }
2607
2608                         /* wrap bsp luxels if necessary */
2609                         if( lm->wrap[ 0 ] )
2610                         {
2611                                 for( y = 0; y < lm->h; y++ )
2612                                 {
2613                                         bspLuxel = BSP_LUXEL( lightmapNum, 0, y );
2614                                         bspLuxel2 = BSP_LUXEL( lightmapNum, lm->w - 1, y );
2615                                         VectorAdd( bspLuxel, bspLuxel2, bspLuxel );
2616                                         VectorScale( bspLuxel, 0.5f, bspLuxel );
2617                                         VectorCopy( bspLuxel, bspLuxel2 );
2618                                         if( deluxemap && lightmapNum == 0 )
2619                                         {
2620                                                 bspDeluxel = BSP_DELUXEL( 0, y );
2621                                                 bspDeluxel2 = BSP_DELUXEL( lm->w - 1, y );
2622                                                 VectorAdd( bspDeluxel, bspDeluxel2, bspDeluxel );
2623                                                 VectorScale( bspDeluxel, 0.5f, bspDeluxel );
2624                                                 VectorCopy( bspDeluxel, bspDeluxel2 );
2625                                         }
2626                                 }
2627                         }
2628                         if( lm->wrap[ 1 ] )
2629                         {
2630                                 for( x = 0; x < lm->w; x++ )
2631                                 {
2632                                         bspLuxel = BSP_LUXEL( lightmapNum, x, 0 );
2633                                         bspLuxel2 = BSP_LUXEL( lightmapNum, x, lm->h - 1 );
2634                                         VectorAdd( bspLuxel, bspLuxel2, bspLuxel );
2635                                         VectorScale( bspLuxel, 0.5f, bspLuxel );
2636                                         VectorCopy( bspLuxel, bspLuxel2 );
2637                                         if( deluxemap && lightmapNum == 0 )
2638                                         {
2639                                                 bspDeluxel = BSP_DELUXEL( x, 0 );
2640                                                 bspDeluxel2 = BSP_DELUXEL( x, lm->h - 1 );
2641                                                 VectorAdd( bspDeluxel, bspDeluxel2, bspDeluxel );
2642                                                 VectorScale( bspDeluxel, 0.5f, bspDeluxel );
2643                                                 VectorCopy( bspDeluxel, bspDeluxel2 );
2644                                         }
2645                                 }
2646                         }
2647                 }
2648         }
2649
2650         /* -----------------------------------------------------------------
2651            convert modelspace deluxemaps to tangentspace
2652            ----------------------------------------------------------------- */
2653         /* note it */
2654         if( !bouncing )
2655         {
2656                 if( deluxemap && deluxemode == 1)
2657                 {
2658                         vec3_t  worldUp, myNormal, myTangent, myBinormal;
2659                         float dist;
2660
2661                         Sys_Printf( "converting..." );
2662
2663                         for( i = 0; i < numRawLightmaps; i++ )
2664                         {
2665                                 /* get lightmap */
2666                                 lm = &rawLightmaps[ i ];
2667
2668                                 /* walk lightmap samples */
2669                                 for( y = 0; y < lm->sh; y++ )
2670                                 {
2671                                         for( x = 0; x < lm->sw; x++ )
2672                                         {
2673                                                 /* get normal and deluxel */
2674                                                 normal = SUPER_NORMAL(x, y);
2675                                                 cluster = SUPER_CLUSTER(x, y);
2676                                                 bspDeluxel = BSP_DELUXEL( x, y );
2677                                                 deluxel = SUPER_DELUXEL( x, y );
2678
2679                                                 /* get normal */
2680                                                 VectorSet( myNormal, normal[0], normal[1], normal[2] );
2681
2682                                                 /* get tangent vectors */
2683                                                 if( myNormal[ 0 ] == 0.0f && myNormal[ 1 ] == 0.0f )
2684                                                 {
2685                                                         if( myNormal[ 2 ] == 1.0f )
2686                                                         {
2687                                                                 VectorSet( myTangent, 1.0f, 0.0f, 0.0f );
2688                                                                 VectorSet( myBinormal, 0.0f, 1.0f, 0.0f );
2689                                                         }
2690                                                         else if( myNormal[ 2 ] == -1.0f )
2691                                                         {
2692                                                                 VectorSet( myTangent, -1.0f, 0.0f, 0.0f );
2693                                                                 VectorSet( myBinormal,  0.0f, 1.0f, 0.0f );
2694                                                         }
2695                                                 }
2696                                                 else
2697                                                 {
2698                                                         VectorSet( worldUp, 0.0f, 0.0f, 1.0f );
2699                                                         CrossProduct( myNormal, worldUp, myTangent );
2700                                                         VectorNormalize( myTangent, myTangent );
2701                                                         CrossProduct( myTangent, myNormal, myBinormal );
2702                                                         VectorNormalize( myBinormal, myBinormal );
2703                                                 }
2704
2705                                                 /* project onto plane */
2706                                                 dist = -DotProduct(myTangent, myNormal);
2707                                                 VectorMA(myTangent, dist, myNormal, myTangent);
2708                                                 dist = -DotProduct(myBinormal, myNormal);
2709                                                 VectorMA(myBinormal, dist, myNormal, myBinormal);
2710
2711                                                 /* renormalize */
2712                                                 VectorNormalize( myTangent, myTangent );
2713                                                 VectorNormalize( myBinormal, myBinormal );
2714
2715                                                 /* convert modelspace deluxel to tangentspace */
2716                                                 dirSample[0] = bspDeluxel[0];
2717                                                 dirSample[1] = bspDeluxel[1];
2718                                                 dirSample[2] = bspDeluxel[2];
2719                                                 VectorNormalize(dirSample, dirSample);
2720
2721                                                 /* fix tangents to world matrix */
2722                                                 if (myNormal[0] > 0 || myNormal[1] < 0 || myNormal[2] < 0)
2723                                                         VectorNegate(myTangent, myTangent);
2724
2725                                                 /* build tangentspace vectors */
2726                                                 bspDeluxel[0] = DotProduct(dirSample, myTangent);
2727                                                 bspDeluxel[1] = DotProduct(dirSample, myBinormal);
2728                                                 bspDeluxel[2] = DotProduct(dirSample, myNormal);
2729                                         }
2730                                 }
2731                         }
2732                 }
2733         }
2734
2735         /* -----------------------------------------------------------------
2736            blend lightmaps
2737            ----------------------------------------------------------------- */
2738
2739 #ifdef sdfsdfwq312323
2740         /* note it */
2741         Sys_Printf( "blending..." );
2742
2743         for( i = 0; i < numRawLightmaps; i++ )
2744         {
2745                 vec3_t  myColor;
2746                 float myBrightness;
2747
2748                 /* get lightmap */
2749                 lm = &rawLightmaps[ i ];
2750
2751                 /* walk individual lightmaps */
2752                 for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
2753                 {
2754                         /* early outs */
2755                         if( lm->superLuxels[ lightmapNum ] == NULL )
2756                                 continue;
2757
2758                         /* walk lightmap samples */
2759                         for( y = 0; y < lm->sh; y++ )
2760                         {
2761                                 for( x = 0; x < lm->sw; x++ )
2762                                 {
2763                                         /* get luxel */
2764                                         bspLuxel = BSP_LUXEL( lightmapNum, x, y );
2765
2766                                         /* get color */
2767                                         VectorNormalize(bspLuxel, myColor);
2768                                         myBrightness = VectorLength(bspLuxel);
2769                                         myBrightness *= (1 / 127.0f);
2770                                         myBrightness = myBrightness*myBrightness;
2771                                         myBrightness *= 127.0f;
2772                                         VectorScale(myColor, myBrightness, bspLuxel);
2773                                 }
2774                         }
2775                 }
2776         }
2777 #endif
2778
2779         /* -----------------------------------------------------------------
2780            collapse non-unique lightmaps
2781            ----------------------------------------------------------------- */
2782
2783         if( noCollapse == qfalse && deluxemap == qfalse )
2784         {
2785                 /* note it */
2786                 Sys_Printf( "collapsing..." );
2787
2788                 /* set all twin refs to null */
2789                 for( i = 0; i < numRawLightmaps; i++ )
2790                 {
2791                         for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
2792                         {
2793                                 rawLightmaps[ i ].twins[ lightmapNum ] = NULL;
2794                                 rawLightmaps[ i ].twinNums[ lightmapNum ] = -1;
2795                                 rawLightmaps[ i ].numStyledTwins = 0;
2796                         }
2797                 }
2798
2799                 /* walk the list of raw lightmaps */
2800                 for( i = 0; i < numRawLightmaps; i++ )
2801                 {
2802                         /* get lightmap */
2803                         lm = &rawLightmaps[ i ];
2804
2805                         /* walk lightmaps */
2806                         for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
2807                         {
2808                                 /* early outs */
2809                                 if( lm->bspLuxels[ lightmapNum ] == NULL ||
2810                                         lm->twins[ lightmapNum ] != NULL )
2811                                         continue;
2812
2813                                 /* find all lightmaps that are virtually identical to this one */
2814                                 for( j = i + 1; j < numRawLightmaps; j++ )
2815                                 {
2816                                         /* get lightmap */
2817                                         lm2 = &rawLightmaps[ j ];
2818
2819                                         /* walk lightmaps */
2820                                         for( lightmapNum2 = 0; lightmapNum2 < MAX_LIGHTMAPS; lightmapNum2++ )
2821                                         {
2822                                                 /* early outs */
2823                                                 if( lm2->bspLuxels[ lightmapNum2 ] == NULL ||
2824                                                         lm2->twins[ lightmapNum2 ] != NULL )
2825                                                         continue;
2826
2827                                                 /* compare them */
2828                                                 if( CompareBSPLuxels( lm, lightmapNum, lm2, lightmapNum2 ) )
2829                                                 {
2830                                                         /* merge and set twin */
2831                                                         if( MergeBSPLuxels( lm, lightmapNum, lm2, lightmapNum2 ) )
2832                                                         {
2833                                                                 lm2->twins[ lightmapNum2 ] = lm;
2834                                                                 lm2->twinNums[ lightmapNum2 ] = lightmapNum;
2835                                                                 numTwins++;
2836                                                                 numTwinLuxels += (lm->w * lm->h);
2837
2838                                                                 /* count styled twins */
2839                                                                 if( lightmapNum > 0 )
2840                                                                         lm->numStyledTwins++;
2841                                                         }
2842                                                 }
2843                                         }
2844                                 }
2845                         }
2846                 }
2847         }
2848
2849         /* -----------------------------------------------------------------
2850            sort raw lightmaps by shader
2851            ----------------------------------------------------------------- */
2852
2853         /* note it */
2854         Sys_Printf( "sorting..." );
2855
2856         /* allocate a new sorted list */
2857         if( sortLightmaps == NULL )
2858                 sortLightmaps = safe_malloc( numRawLightmaps * sizeof( int ) );
2859
2860         /* fill it out and sort it */
2861         for( i = 0; i < numRawLightmaps; i++ )
2862                 sortLightmaps[ i ] = i;
2863         qsort( sortLightmaps, numRawLightmaps, sizeof( int ), CompareRawLightmap );
2864
2865         /* -----------------------------------------------------------------
2866            allocate output lightmaps
2867            ----------------------------------------------------------------- */
2868
2869         /* note it */
2870         Sys_Printf( "allocating..." );
2871
2872         /* kill all existing output lightmaps */
2873         if( outLightmaps != NULL )
2874         {
2875                 for( i = 0; i < numOutLightmaps; i++ )
2876                 {
2877                         free( outLightmaps[ i ].lightBits );
2878                         free( outLightmaps[ i ].bspLightBytes );
2879                 }
2880                 free( outLightmaps );
2881                 outLightmaps = NULL;
2882         }
2883
2884         numLightmapShaders = 0;
2885         numOutLightmaps = 0;
2886         numBSPLightmaps = 0;
2887         numExtLightmaps = 0;
2888
2889         /* find output lightmap */
2890         for( i = 0; i < numRawLightmaps; i++ )
2891         {
2892                 lm = &rawLightmaps[ sortLightmaps[ i ] ];
2893                 FindOutLightmaps( lm );
2894         }
2895
2896         /* set output numbers in twinned lightmaps */
2897         for( i = 0; i < numRawLightmaps; i++ )
2898         {
2899                 /* get lightmap */
2900                 lm = &rawLightmaps[ sortLightmaps[ i ] ];
2901
2902                 /* walk lightmaps */
2903                 for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
2904                 {
2905                         /* get twin */
2906                         lm2 = lm->twins[ lightmapNum ];
2907                         if( lm2 == NULL )
2908                                 continue;
2909                         lightmapNum2 = lm->twinNums[ lightmapNum ];
2910
2911                         /* find output lightmap from twin */
2912                         lm->outLightmapNums[ lightmapNum ] = lm2->outLightmapNums[ lightmapNum2 ];
2913                         lm->lightmapX[ lightmapNum ] = lm2->lightmapX[ lightmapNum2 ];
2914                         lm->lightmapY[ lightmapNum ] = lm2->lightmapY[ lightmapNum2 ];
2915                 }
2916         }
2917
2918         /* -----------------------------------------------------------------
2919            store output lightmaps
2920            ----------------------------------------------------------------- */
2921
2922         /* note it */
2923         Sys_Printf( "storing..." );
2924
2925         /* count the bsp lightmaps and allocate space */
2926         if( bspLightBytes != NULL )
2927                 free( bspLightBytes );
2928         if( numBSPLightmaps == 0 || externalLightmaps )
2929         {
2930                 numBSPLightBytes = 0;
2931                 bspLightBytes = NULL;
2932         }
2933         else
2934         {
2935                 numBSPLightBytes = (numBSPLightmaps * game->lightmapSize * game->lightmapSize * 3);
2936                 bspLightBytes = safe_malloc( numBSPLightBytes );
2937                 memset( bspLightBytes, 0, numBSPLightBytes );
2938         }
2939
2940         /* walk the list of output lightmaps */
2941         for( i = 0; i < numOutLightmaps; i++ )
2942         {
2943                 /* get output lightmap */
2944                 olm = &outLightmaps[ i ];
2945
2946                 /* is this a valid bsp lightmap? */
2947                 if( olm->lightmapNum >= 0 && !externalLightmaps )
2948                 {
2949                         /* copy lighting data */
2950                         lb = bspLightBytes + (olm->lightmapNum * game->lightmapSize * game->lightmapSize * 3);
2951                         memcpy( lb, olm->bspLightBytes, game->lightmapSize * game->lightmapSize * 3 );
2952
2953                         /* copy direction data */
2954                         if( deluxemap )
2955                         {
2956                                 lb = bspLightBytes + ((olm->lightmapNum + 1) * game->lightmapSize * game->lightmapSize * 3);
2957                                 memcpy( lb, olm->bspDirBytes, game->lightmapSize * game->lightmapSize * 3 );
2958                         }
2959                 }
2960
2961                 /* external lightmap? */
2962                 if( olm->lightmapNum < 0 || olm->extLightmapNum >= 0 || externalLightmaps )
2963                 {
2964                         /* make a directory for the lightmaps */
2965                         Q_mkdir( dirname );
2966
2967                         /* set external lightmap number */
2968                         olm->extLightmapNum = numExtLightmaps;
2969
2970                         /* write lightmap */
2971                         sprintf( filename, "%s/" EXTERNAL_LIGHTMAP, dirname, numExtLightmaps );
2972                         Sys_FPrintf( SYS_VRB, "\nwriting %s", filename );
2973                         WriteTGA24( filename, olm->bspLightBytes, olm->customWidth, olm->customHeight, qtrue );
2974                         numExtLightmaps++;
2975
2976                         /* write deluxemap */
2977                         if( deluxemap )
2978                         {
2979                                 sprintf( filename, "%s/" EXTERNAL_LIGHTMAP, dirname, numExtLightmaps );
2980                                 Sys_FPrintf( SYS_VRB, "\nwriting %s", filename );
2981                                 WriteTGA24( filename, olm->bspDirBytes, olm->customWidth, olm->customHeight, qtrue );
2982                                 numExtLightmaps++;
2983
2984                                 if( debugDeluxemap )
2985                                         olm->extLightmapNum++;
2986                         }
2987                 }
2988         }
2989
2990         if( numExtLightmaps > 0 )
2991                 Sys_Printf( "\n" );
2992
2993         /* delete unused external lightmaps */
2994         for( i = numExtLightmaps; i; i++ )
2995         {
2996                 /* determine if file exists */
2997                 sprintf( filename, "%s/" EXTERNAL_LIGHTMAP, dirname, i );
2998                 if( !FileExists( filename ) )
2999                         break;
3000
3001                 /* delete it */
3002                 remove( filename );
3003         }
3004
3005         /* -----------------------------------------------------------------
3006            project the lightmaps onto the bsp surfaces
3007            ----------------------------------------------------------------- */
3008
3009         /* note it */
3010         Sys_Printf( "projecting..." );
3011
3012         /* walk the list of surfaces */
3013         for( i = 0; i < numBSPDrawSurfaces; i++ )
3014         {
3015                 /* get the surface and info */
3016                 ds = &bspDrawSurfaces[ i ];
3017                 info = &surfaceInfos[ i ];
3018                 lm = info->lm;
3019                 olm = NULL;
3020
3021                 /* handle surfaces with identical parent */
3022                 if( info->parentSurfaceNum >= 0 )
3023                 {
3024                         /* preserve original data and get parent */
3025                         parent = &bspDrawSurfaces[ info->parentSurfaceNum ];
3026                         memcpy( &dsTemp, ds, sizeof( *ds ) );
3027
3028                         /* overwrite child with parent data */
3029                         memcpy( ds, parent, sizeof( *ds ) );
3030
3031                         /* restore key parts */
3032                         ds->fogNum = dsTemp.fogNum;
3033                         ds->firstVert = dsTemp.firstVert;
3034                         ds->firstIndex = dsTemp.firstIndex;
3035                         memcpy( ds->lightmapVecs, dsTemp.lightmapVecs, sizeof( dsTemp.lightmapVecs ) );
3036
3037                         /* set vertex data */
3038                         dv = &bspDrawVerts[ ds->firstVert ];
3039                         dvParent = &bspDrawVerts[ parent->firstVert ];
3040                         for( j = 0; j < ds->numVerts; j++ )
3041                         {
3042                                 memcpy( dv[ j ].lightmap, dvParent[ j ].lightmap, sizeof( dv[ j ].lightmap ) );
3043                                 memcpy( dv[ j ].color, dvParent[ j ].color, sizeof( dv[ j ].color ) );
3044                         }
3045
3046                         /* skip the rest */
3047                         continue;
3048                 }
3049
3050                 /* handle vertex lit or approximated surfaces */
3051                 else if( lm == NULL || lm->outLightmapNums[ 0 ] < 0 )
3052                 {
3053                         for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
3054                         {
3055                                 ds->lightmapNum[ lightmapNum ] = -3;
3056                                 ds->lightmapStyles[ lightmapNum ] = ds->vertexStyles[ lightmapNum ];
3057                         }
3058                 }
3059
3060                 /* handle lightmapped surfaces */
3061                 else
3062                 {
3063                         /* walk lightmaps */
3064                         for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
3065                         {
3066                                 /* set style */
3067                                 ds->lightmapStyles[ lightmapNum ] = lm->styles[ lightmapNum ];
3068
3069                                 /* handle unused style */
3070                                 if( lm->styles[ lightmapNum ] == LS_NONE || lm->outLightmapNums[ lightmapNum ] < 0 )
3071                                 {
3072                                         ds->lightmapNum[ lightmapNum ] = -3;
3073                                         continue;
3074                                 }
3075
3076                                 /* get output lightmap */
3077                                 olm = &outLightmaps[ lm->outLightmapNums[ lightmapNum ] ];
3078
3079                                 /* set bsp lightmap number */
3080                                 ds->lightmapNum[ lightmapNum ] = olm->lightmapNum;
3081
3082                                 /* deluxemap debugging makes the deluxemap visible */
3083                                 if( deluxemap && debugDeluxemap && lightmapNum == 0 )
3084                                         ds->lightmapNum[ lightmapNum ]++;
3085
3086                                 /* calc lightmap origin in texture space */
3087                                 lmx = (float) lm->lightmapX[ lightmapNum ] / (float) olm->customWidth;
3088                                 lmy = (float) lm->lightmapY[ lightmapNum ] / (float) olm->customHeight;
3089
3090                                 /* calc lightmap st coords */
3091                                 dv = &bspDrawVerts[ ds->firstVert ];
3092                                 ydv = &yDrawVerts[ ds->firstVert ];
3093                                 for( j = 0; j < ds->numVerts; j++ )
3094                                 {
3095                                         if( lm->solid[ lightmapNum ] )
3096                                         {
3097                                                 dv[ j ].lightmap[ lightmapNum ][ 0 ] = lmx + (0.5f / (float) olm->customWidth);
3098                                                 dv[ j ].lightmap[ lightmapNum ][ 1 ] = lmy + (0.5f / (float) olm->customWidth);
3099                                         }
3100                                         else
3101                                         {
3102                                                 dv[ j ].lightmap[ lightmapNum ][ 0 ] = lmx + (ydv[ j ].lightmap[ 0 ][ 0 ] / (superSample * olm->customWidth));
3103                                                 dv[ j ].lightmap[ lightmapNum ][ 1 ] = lmy + (ydv[ j ].lightmap[ 0 ][ 1 ] / (superSample * olm->customHeight));
3104                                         }
3105                                 }
3106                         }
3107                 }
3108
3109                 /* store vertex colors */
3110                 dv = &bspDrawVerts[ ds->firstVert ];
3111                 for( j = 0; j < ds->numVerts; j++ )
3112                 {
3113                         /* walk lightmaps */
3114                         for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
3115                         {
3116                                 /* handle unused style */
3117                                 if( ds->vertexStyles[ lightmapNum ] == LS_NONE )
3118                                         VectorClear( color );
3119                                 else
3120                                 {
3121                                         /* get vertex color */
3122                                         luxel = VERTEX_LUXEL( lightmapNum, ds->firstVert + j );
3123                                         VectorCopy( luxel, color );
3124
3125                                         /* set minimum light */
3126                                         if( lightmapNum == 0 )
3127                                         {
3128                                                 for( k = 0; k < 3; k++ )
3129                                                         if( color[ k ] < minVertexLight[ k ] )
3130                                                                 color[ k ] = minVertexLight[ k ];
3131                                         }
3132                                 }
3133
3134                                 /* store to bytes */
3135                                 if( !info->si->noVertexLight )
3136                                         ColorToBytes( color, dv[ j ].color[ lightmapNum ], info->si->vertexScale );
3137                         }
3138                 }
3139
3140                 /* surfaces with styled lightmaps and a style marker get a custom generated shader (fixme: make this work with external lightmaps) */
3141                 if( olm != NULL && lm != NULL && lm->styles[ 1 ] != LS_NONE && game->load != LoadRBSPFile )     //%     info->si->styleMarker > 0 )
3142                 {
3143                         qboolean        dfEqual;
3144                         char            key[ 32 ], styleStage[ 512 ], styleStages[ 4096 ], rgbGen[ 128 ], alphaGen[ 128 ];
3145
3146
3147                         /* setup */
3148                         sprintf( styleStages, "\n\t// Q3Map2 custom lightstyle stage(s)\n" );
3149                         dv = &bspDrawVerts[ ds->firstVert ];
3150
3151                         /* depthFunc equal? */
3152                         if( info->si->styleMarker == 2 || info->si->implicitMap == IM_MASKED )
3153                                 dfEqual = qtrue;
3154                         else
3155                                 dfEqual = qfalse;
3156
3157                         /* generate stages for styled lightmaps */
3158                         for( lightmapNum = 1; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
3159                         {
3160                                 /* early out */
3161                                 style = lm->styles[ lightmapNum ];
3162                                 if( style == LS_NONE || lm->outLightmapNums[ lightmapNum ] < 0 )
3163                                         continue;
3164
3165                                 /* get output lightmap */
3166                                 olm = &outLightmaps[ lm->outLightmapNums[ lightmapNum ] ];
3167
3168                                 /* lightmap name */
3169                                 if( lm->outLightmapNums[ lightmapNum ] == lm->outLightmapNums[ 0 ] )
3170                                         strcpy( lightmapName, "$lightmap" );
3171                                 else
3172                                         sprintf( lightmapName, "maps/%s/" EXTERNAL_LIGHTMAP, mapName, olm->extLightmapNum );
3173
3174                                 /* get rgbgen string */
3175                                 if( rgbGenValues[ style ] == NULL )
3176                                 {
3177                                         sprintf( key, "_style%drgbgen", style );
3178                                         rgbGenValues[ style ] = (char*) ValueForKey( &entities[ 0 ], key );
3179                                         if( rgbGenValues[ style ][ 0 ] == '\0' )
3180                                                 rgbGenValues[ style ] = "wave noise 0.5 1 0 5.37";
3181                                 }
3182                                 rgbGen[ 0 ] = '\0';
3183                                 if( rgbGenValues[ style ][ 0 ] != '\0' )
3184                                         sprintf( rgbGen, "\t\trgbGen %s // style %d\n", rgbGenValues[ style ], style );
3185                                 else
3186                                         rgbGen[ 0 ] = '\0';
3187
3188                                 /* get alphagen string */
3189                                 if( alphaGenValues[ style ] == NULL )
3190                                 {
3191                                         sprintf( key, "_style%dalphagen", style );
3192                                         alphaGenValues[ style ] = (char*) ValueForKey( &entities[ 0 ], key );
3193                                 }
3194                                 if( alphaGenValues[ style ][ 0 ] != '\0' )
3195                                         sprintf( alphaGen, "\t\talphaGen %s // style %d\n", alphaGenValues[ style ], style );
3196                                 else
3197                                         alphaGen[ 0 ] = '\0';
3198
3199                                 /* calculate st offset */
3200                                 lmx = dv[ 0 ].lightmap[ lightmapNum ][ 0 ] - dv[ 0 ].lightmap[ 0 ][ 0 ];
3201                                 lmy = dv[ 0 ].lightmap[ lightmapNum ][ 1 ] - dv[ 0 ].lightmap[ 0 ][ 1 ];
3202
3203                                 /* create additional stage */
3204                                 if( lmx == 0.0f && lmy == 0.0f )
3205                                 {
3206                                         sprintf( styleStage,    "\t{\n"
3207                                                                                         "\t\tmap %s\n"                                                                          /* lightmap */
3208                                                                                         "\t\tblendFunc GL_SRC_ALPHA GL_ONE\n"
3209                                                                                         "%s"                                                                                            /* depthFunc equal */
3210                                                                                         "%s"                                                                                            /* rgbGen */
3211                                                                                         "%s"                                                                                            /* alphaGen */
3212                                                                                         "\t\ttcGen lightmap\n"
3213                                                                                         "\t}\n",
3214                                                 lightmapName,
3215                                                 (dfEqual ? "\t\tdepthFunc equal\n" : ""),
3216                                                 rgbGen,
3217                                                 alphaGen );
3218                                 }
3219                                 else
3220                                 {
3221                                         sprintf( styleStage,    "\t{\n"
3222                                                                                         "\t\tmap %s\n"                                                                          /* lightmap */
3223                                                                                         "\t\tblendFunc GL_SRC_ALPHA GL_ONE\n"
3224                                                                                         "%s"                                                                                            /* depthFunc equal */
3225                                                                                         "%s"                                                                                            /* rgbGen */
3226                                                                                         "%s"                                                                                            /* alphaGen */
3227                                                                                         "\t\ttcGen lightmap\n"
3228                                                                                         "\t\ttcMod transform 1 0 0 1 %1.5f %1.5f\n"                     /* st offset */
3229                                                                                         "\t}\n",
3230                                                 lightmapName,
3231                                                 (dfEqual ? "\t\tdepthFunc equal\n" : ""),
3232                                                 rgbGen,
3233                                                 alphaGen,
3234                                                 lmx, lmy );
3235
3236                                 }
3237
3238                                 /* concatenate */
3239                                 strcat( styleStages, styleStage );
3240                         }
3241
3242                         /* create custom shader */
3243                         if( info->si->styleMarker == 2 )
3244                                 csi = CustomShader( info->si, "q3map_styleMarker2", styleStages );
3245                         else
3246                                 csi = CustomShader( info->si, "q3map_styleMarker", styleStages );
3247
3248                         /* emit remap command */
3249                         //%     EmitVertexRemapShader( csi->shader, info->si->shader );
3250
3251                         /* store it */
3252                         //%     Sys_Printf( "Emitting: %s (%d", csi->shader, strlen( csi->shader ) );
3253                         ds->shaderNum = EmitShader( csi->shader, &bspShaders[ ds->shaderNum ].contentFlags, &bspShaders[ ds->shaderNum ].surfaceFlags );
3254                         //%     Sys_Printf( ")\n" );
3255                 }
3256
3257                 /* devise a custom shader for this surface (fixme: make this work with light styles) */
3258                 else if( olm != NULL && lm != NULL && !externalLightmaps &&
3259                         (olm->customWidth != game->lightmapSize || olm->customHeight != game->lightmapSize) )
3260                 {
3261                         /* get output lightmap */
3262                         olm = &outLightmaps[ lm->outLightmapNums[ 0 ] ];
3263
3264                         /* do some name mangling */
3265                         sprintf( lightmapName, "maps/%s/" EXTERNAL_LIGHTMAP, mapName, olm->extLightmapNum );
3266
3267                         /* create custom shader */
3268                         csi = CustomShader( info->si, "$lightmap", lightmapName );
3269
3270                         /* store it */
3271                         //%     Sys_Printf( "Emitting: %s (%d", csi->shader, strlen( csi->shader ) );
3272                         ds->shaderNum = EmitShader( csi->shader, &bspShaders[ ds->shaderNum ].contentFlags, &bspShaders[ ds->shaderNum ].surfaceFlags );
3273                         //%     Sys_Printf( ")\n" );
3274                 }
3275
3276                 /* use the normal plain-jane shader */
3277                 else
3278                         ds->shaderNum = EmitShader( info->si->shader, &bspShaders[ ds->shaderNum ].contentFlags, &bspShaders[ ds->shaderNum ].surfaceFlags );
3279         }
3280
3281         /* finish */
3282         Sys_Printf( "done.\n" );
3283
3284         /* calc num stored */
3285         numStored = numBSPLightBytes / 3;
3286         efficiency = (numStored <= 0)
3287                 ? 0
3288                 : (float) numUsed / (float) numStored;
3289
3290         /* print stats */
3291         Sys_Printf( "%9d luxels used\n", numUsed );
3292         Sys_Printf( "%9d luxels stored (%3.2f percent efficiency)\n", numStored, efficiency * 100.0f );
3293         Sys_Printf( "%9d solid surface lightmaps\n", numSolidLightmaps );
3294         Sys_Printf( "%9d identical surface lightmaps, using %d luxels\n", numTwins, numTwinLuxels );
3295         Sys_Printf( "%9d vertex forced surfaces\n", numSurfsVertexForced );
3296         Sys_Printf( "%9d vertex approximated surfaces\n", numSurfsVertexApproximated );
3297         Sys_Printf( "%9d BSP lightmaps\n", numBSPLightmaps );
3298         Sys_Printf( "%9d total lightmaps\n", numOutLightmaps );
3299         Sys_Printf( "%9d unique lightmap/shader combinations\n", numLightmapShaders );
3300
3301         /* write map shader file */
3302         WriteMapShaderFile();
3303 }
3304
3305
3306
3307