1 /* -------------------------------------------------------------------------------
3 Copyright (C) 1999-2007 id Software, Inc. and contributors.
4 For a list of contributors, see the accompanying CONTRIBUTORS file.
6 This file is part of GtkRadiant.
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.
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.
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
22 ----------------------------------------------------------------------------------
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."
27 ------------------------------------------------------------------------------- */
42 CreateSunLight() - ydnar
43 this creates a sun light
46 static void CreateSunLight( sun_t *sun )
49 float photons, d, angle, elevation, da, de;
59 if( sun->numSamples < 1 )
63 photons = sun->photons / sun->numSamples;
65 /* create the right number of suns */
66 for( i = 0; i < sun->numSamples; i++ )
68 /* calculate sun direction */
70 VectorCopy( sun->direction, direction );
74 sun->direction[ 0 ] = cos( angle ) * cos( elevation );
75 sun->direction[ 1 ] = sin( angle ) * cos( elevation );
76 sun->direction[ 2 ] = sin( elevation );
78 xz_dist = sqrt( x*x + z*z )
79 latitude = atan2( xz_dist, y ) * RADIANS
80 longitude = atan2( x, z ) * RADIANS
83 d = sqrt( sun->direction[ 0 ] * sun->direction[ 0 ] + sun->direction[ 1 ] * sun->direction[ 1 ] );
84 angle = atan2( sun->direction[ 1 ], sun->direction[ 0 ] );
85 elevation = atan2( sun->direction[ 2 ], d );
87 /* jitter the angles (loop to keep random sample within sun->deviance steridians) */
90 da = (Random() * 2.0f - 1.0f) * sun->deviance;
91 de = (Random() * 2.0f - 1.0f) * sun->deviance;
93 while( (da * da + de * de) > (sun->deviance * sun->deviance) );
98 //% Sys_Printf( "%d: Angle: %3.4f Elevation: %3.3f\n", sun->numSamples, (angle / Q_PI * 180.0f), (elevation / Q_PI * 180.0f) );
100 /* create new vector */
101 direction[ 0 ] = cos( angle ) * cos( elevation );
102 direction[ 1 ] = sin( angle ) * cos( elevation );
103 direction[ 2 ] = sin( elevation );
108 light = safe_malloc( sizeof( *light ) );
109 memset( light, 0, sizeof( *light ) );
110 light->next = lights;
113 /* initialize the light */
114 light->flags = LIGHT_SUN_DEFAULT;
115 light->type = EMIT_SUN;
117 light->falloffTolerance = falloffTolerance;
118 light->filterRadius = sun->filterRadius / sun->numSamples;
119 light->style = noStyles ? LS_NORMAL : sun->style;
121 /* set the light's position out to infinity */
122 VectorMA( vec3_origin, (MAX_WORLD_COORD * 8.0f), direction, light->origin ); /* MAX_WORLD_COORD * 2.0f */
124 /* set the facing to be the inverse of the sun direction */
125 VectorScale( direction, -1.0, light->normal );
126 light->dist = DotProduct( light->origin, light->normal );
128 /* set color and photons */
129 VectorCopy( sun->color, light->color );
130 light->photons = photons * skyScale;
134 if( sun->next != NULL )
135 CreateSunLight( sun->next );
141 CreateSkyLights() - ydnar
142 simulates sky light with multiple suns
145 static void CreateSkyLights( vec3_t color, float value, int iterations, float filterRadius, int style )
148 int angleSteps, elevationSteps;
149 float angle, elevation;
150 float angleStep, elevationStep;
156 if( value <= 0.0f || iterations < 2 )
159 /* calculate some stuff */
160 step = 2.0f / (iterations - 1);
163 /* basic sun setup */
164 VectorCopy( color, sun.color );
166 sun.filterRadius = filterRadius;
168 sun.style = noStyles ? LS_NORMAL : style;
172 elevationSteps = iterations - 1;
173 angleSteps = elevationSteps * 4;
175 elevationStep = DEG2RAD( 90.0f / iterations ); /* skip elevation 0 */
176 angleStep = DEG2RAD( 360.0f / angleSteps );
178 /* calc individual sun brightness */
179 numSuns = angleSteps * elevationSteps + 1;
180 sun.photons = value / numSuns;
182 /* iterate elevation */
183 elevation = elevationStep * 0.5f;
185 for( i = 0, elevation = elevationStep * 0.5f; i < elevationSteps; i++ )
188 for( j = 0; j < angleSteps; j++ )
191 sun.direction[ 0 ] = cos( angle ) * cos( elevation );
192 sun.direction[ 1 ] = sin( angle ) * cos( elevation );
193 sun.direction[ 2 ] = sin( elevation );
194 CreateSunLight( &sun );
201 elevation += elevationStep;
202 angle += angleStep / elevationSteps;
205 /* create vertical sun */
206 VectorSet( sun.direction, 0.0f, 0.0f, 1.0f );
207 CreateSunLight( &sun );
217 creates lights from light entities
220 void CreateEntityLights( void )
223 light_t *light, *light2;
229 float intensity, scale, deviance, filterRadius;
230 int spawnflags, flags, numSamples;
234 /* go throught entity list and find lights */
235 for( i = 0; i < numEntities; i++ )
239 name = ValueForKey( e, "classname" );
241 /* ydnar: check for lightJunior */
242 if( Q_strncasecmp( name, "lightJunior", 11 ) == 0 )
244 else if( Q_strncasecmp( name, "light", 5 ) == 0 )
249 /* lights with target names (and therefore styles) are only parsed from BSP */
250 target = ValueForKey( e, "targetname" );
251 if( target[ 0 ] != '\0' && i >= numBSPEntities )
256 light = safe_malloc( sizeof( *light ) );
257 memset( light, 0, sizeof( *light ) );
258 light->next = lights;
261 /* handle spawnflags */
262 spawnflags = IntForKey( e, "spawnflags" );
264 /* ydnar: quake 3+ light behavior */
265 if( wolfLight == qfalse )
267 /* set default flags */
268 flags = LIGHT_Q3A_DEFAULT;
270 /* linear attenuation? */
273 flags |= LIGHT_ATTEN_LINEAR;
274 flags &= ~LIGHT_ATTEN_ANGLE;
277 /* no angle attenuate? */
279 flags &= ~LIGHT_ATTEN_ANGLE;
282 /* ydnar: wolf light behavior */
285 /* set default flags */
286 flags = LIGHT_WOLF_DEFAULT;
288 /* inverse distance squared attenuation? */
291 flags &= ~LIGHT_ATTEN_LINEAR;
292 flags |= LIGHT_ATTEN_ANGLE;
295 /* angle attenuate? */
297 flags |= LIGHT_ATTEN_ANGLE;
300 /* other flags (borrowed from wolf) */
302 /* wolf dark light? */
303 if( (spawnflags & 4) || (spawnflags & 8) )
307 if( spawnflags & 16 )
308 flags &= ~LIGHT_GRID;
314 flags &= ~LIGHT_SURFACES;
317 /* vortex: unnormalized? */
319 flags |= LIGHT_UNNORMALIZED;
321 /* vortex: distance atten? */
323 flags |= LIGHT_ATTEN_DISTANCE;
325 /* store the flags */
326 light->flags = flags;
328 /* ydnar: set fade key (from wolf) */
330 if( light->flags & LIGHT_ATTEN_LINEAR )
332 light->fade = FloatForKey( e, "fade" );
333 if( light->fade == 0.0f )
337 /* ydnar: set angle scaling (from vlight) */
338 light->angleScale = FloatForKey( e, "_anglescale" );
339 if( light->angleScale != 0.0f )
340 light->flags |= LIGHT_ATTEN_ANGLE;
343 GetVectorForKey( e, "origin", light->origin);
344 light->style = IntForKey( e, "_style" );
345 if( light->style == LS_NORMAL )
346 light->style = IntForKey( e, "style" );
347 if( light->style < LS_NORMAL || light->style >= LS_NONE )
348 Error( "Invalid lightstyle (%d) on entity %d", light->style, i );
350 if( light->style != LS_NORMAL ) {
351 Sys_FPrintf (SYS_WRN, "WARNING: Styled light found targeting %s\n **", target );
354 /* set light intensity */
355 intensity = FloatForKey( e, "_light" );
356 if( intensity == 0.0f )
357 intensity = FloatForKey( e, "light" );
358 if( intensity == 0.0f)
361 /* ydnar: set light scale (sof2) */
362 scale = FloatForKey( e, "scale" );
367 /* ydnar: get deviance and samples */
368 deviance = FloatForKey( e, "_deviance" );
369 if( deviance == 0.0f )
370 deviance = FloatForKey( e, "_deviation" );
371 if( deviance == 0.0f )
372 deviance = FloatForKey( e, "_jitter" );
373 numSamples = IntForKey( e, "_samples" );
374 if( deviance < 0.0f || numSamples < 1 )
379 intensity /= numSamples;
381 /* ydnar: get filter radius */
382 filterRadius = FloatForKey( e, "_filterradius" );
383 if( filterRadius == 0.0f )
384 filterRadius = FloatForKey( e, "_filteradius" );
385 if( filterRadius == 0.0f )
386 filterRadius = FloatForKey( e, "_filter" );
387 if( filterRadius < 0.0f )
389 light->filterRadius = filterRadius;
391 /* set light color */
392 _color = ValueForKey( e, "_color" );
393 if( _color && _color[ 0 ] )
395 sscanf( _color, "%f %f %f", &light->color[ 0 ], &light->color[ 1 ], &light->color[ 2 ] );
396 if (!(light->flags & LIGHT_UNNORMALIZED))
398 ColorNormalize( light->color, light->color );
402 light->color[ 0 ] = light->color[ 1 ] = light->color[ 2 ] = 1.0f;
404 intensity = intensity * pointScale;
405 light->photons = intensity;
407 light->type = EMIT_POINT;
409 /* set falloff threshold */
410 light->falloffTolerance = falloffTolerance / numSamples;
412 /* lights with a target will be spotlights */
413 target = ValueForKey( e, "target" );
423 e2 = FindTargetEntity( target );
426 Sys_Printf( "WARNING: light at (%i %i %i) has missing target\n",
427 (int) light->origin[ 0 ], (int) light->origin[ 1 ], (int) light->origin[ 2 ] );
431 /* not a point light */
435 /* make a spotlight */
436 GetVectorForKey( e2, "origin", dest );
437 VectorSubtract( dest, light->origin, light->normal );
438 dist = VectorNormalize( light->normal, light->normal );
439 radius = FloatForKey( e, "radius" );
444 light->radiusByDist = (radius + 16) / dist;
445 light->type = EMIT_SPOT;
447 /* ydnar: wolf mods: spotlights always use nonlinear + angle attenuation */
448 light->flags &= ~LIGHT_ATTEN_LINEAR;
449 light->flags |= LIGHT_ATTEN_ANGLE;
452 /* ydnar: is this a sun? */
453 _sun = ValueForKey( e, "_sun" );
454 if( _sun[ 0 ] == '1' )
456 /* not a spot light */
459 /* unlink this light */
460 lights = light->next;
463 VectorScale( light->normal, -1.0f, sun.direction );
464 VectorCopy( light->color, sun.color );
465 sun.photons = (intensity / pointScale);
466 sun.deviance = deviance / 180.0f * Q_PI;
467 sun.numSamples = numSamples;
468 sun.style = noStyles ? LS_NORMAL : light->style;
471 /* make a sun light */
472 CreateSunLight( &sun );
474 /* free original light */
478 /* skip the rest of this love story */
484 /* jitter the light */
485 for( j = 1; j < numSamples; j++ )
488 light2 = safe_malloc( sizeof( *light ) );
489 memcpy( light2, light, sizeof( *light ) );
490 light2->next = lights;
494 if( light->type == EMIT_SPOT )
500 light2->origin[ 0 ] = light->origin[ 0 ] + (Random() * 2.0f - 1.0f) * deviance;
501 light2->origin[ 1 ] = light->origin[ 1 ] + (Random() * 2.0f - 1.0f) * deviance;
502 light2->origin[ 2 ] = light->origin[ 2 ] + (Random() * 2.0f - 1.0f) * deviance;
510 CreateSurfaceLights() - ydnar
511 this hijacks the radiosity code to generate surface lights for first pass
514 #define APPROX_BOUNCE 1.0f
516 void CreateSurfaceLights( void )
519 bspDrawSurface_t *ds;
529 /* get sun shader supressor */
530 nss = ValueForKey( &entities[ 0 ], "_noshadersun" );
532 /* walk the list of surfaces */
533 for( i = 0; i < numBSPDrawSurfaces; i++ )
535 /* get surface and other bits */
536 ds = &bspDrawSurfaces[ i ];
537 info = &surfaceInfos[ i ];
541 if( si->sun != NULL && nss[ 0 ] != '1' )
543 Sys_FPrintf( SYS_VRB, "Sun: %s\n", si->shader );
544 CreateSunLight( si->sun );
545 si->sun = NULL; /* FIXME: leak! */
549 if( si->skyLightValue > 0.0f )
551 Sys_FPrintf( SYS_VRB, "Sky: %s\n", si->shader );
552 CreateSkyLights( si->color, si->skyLightValue, si->skyLightIterations, si->lightFilterRadius, si->lightStyle );
553 si->skyLightValue = 0.0f; /* FIXME: hack! */
556 /* try to early out */
560 /* autosprite shaders become point lights */
563 /* create an average xyz */
564 VectorAdd( info->mins, info->maxs, origin );
565 VectorScale( origin, 0.5f, origin );
568 light = safe_malloc( sizeof( *light ) );
569 memset( light, 0, sizeof( *light ) );
570 light->next = lights;
574 light->flags = LIGHT_Q3A_DEFAULT;
575 light->type = EMIT_POINT;
576 light->photons = si->value * pointScale;
579 VectorCopy( origin, light->origin );
580 VectorCopy( si->color, light->color );
581 light->falloffTolerance = falloffTolerance;
582 light->style = si->lightStyle;
584 /* add to point light count and continue */
589 /* get subdivision amount */
590 if( si->lightSubdivide > 0 )
591 subdivide = si->lightSubdivide;
593 subdivide = defaultLightSubdivide;
596 switch( ds->surfaceType )
599 case MST_TRIANGLE_SOUP:
600 RadLightForTriangles( i, 0, info->lm, si, APPROX_BOUNCE, subdivide, &cw );
604 RadLightForPatch( i, 0, info->lm, si, APPROX_BOUNCE, subdivide, &cw );
617 find the offset values for inline models
620 void SetEntityOrigins( void )
628 bspDrawSurface_t *ds;
631 /* ydnar: copy drawverts into private storage for nefarious purposes */
632 yDrawVerts = safe_malloc( numBSPDrawVerts * sizeof( bspDrawVert_t ) );
633 memcpy( yDrawVerts, bspDrawVerts, numBSPDrawVerts * sizeof( bspDrawVert_t ) );
635 /* set the entity origins */
636 for( i = 0; i < numEntities; i++ )
638 /* get entity and model */
640 key = ValueForKey( e, "model" );
641 if( key[ 0 ] != '*' )
643 modelnum = atoi( key + 1 );
644 dm = &bspModels[ modelnum ];
646 /* get entity origin */
647 key = ValueForKey( e, "origin" );
648 if( key[ 0 ] == '\0' )
650 GetVectorForKey( e, "origin", origin );
652 /* set origin for all surfaces for this model */
653 for( j = 0; j < dm->numBSPSurfaces; j++ )
656 ds = &bspDrawSurfaces[ dm->firstBSPSurface + j ];
659 for( k = 0; k < ds->numVerts; k++ )
661 f = ds->firstVert + k;
662 VectorAdd( origin, bspDrawVerts[ f ].xyz, yDrawVerts[ f ].xyz );
671 PointToPolygonFormFactor()
672 calculates the area over a point/normal hemisphere a winding covers
673 ydnar: fixme: there has to be a faster way to calculate this
674 without the expensive per-vert sqrts and transcendental functions
675 ydnar 2002-09-30: added -faster switch because only 19% deviance > 10%
676 between this and the approximation
679 #define ONE_OVER_2PI 0.159154942f //% (1.0f / (2.0f * 3.141592657f))
681 float PointToPolygonFormFactor( const vec3_t point, const vec3_t normal, const winding_t *w )
683 vec3_t triVector, triNormal;
685 vec3_t dirs[ MAX_POINTS_ON_WINDING ];
687 float dot, angle, facing;
690 /* this is expensive */
691 for( i = 0; i < w->numpoints; i++ )
693 VectorSubtract( w->p[ i ], point, dirs[ i ] );
694 VectorNormalize( dirs[ i ], dirs[ i ] );
697 /* duplicate first vertex to avoid mod operation */
698 VectorCopy( dirs[ 0 ], dirs[ i ] );
700 /* calculcate relative area */
702 for( i = 0; i < w->numpoints; i++ )
706 dot = DotProduct( dirs[ i ], dirs[ j ] );
708 /* roundoff can cause slight creep, which gives an IND from acos */
711 else if( dot < -1.0f )
717 CrossProduct( dirs[ i ], dirs[ j ], triVector );
718 if( VectorNormalize( triVector, triNormal ) < 0.0001f )
721 facing = DotProduct( normal, triNormal );
722 total += facing * angle;
724 /* ydnar: this was throwing too many errors with radiosity + crappy maps. ignoring it. */
725 if( total > 6.3f || total < -6.3f )
729 /* now in the range of 0 to 1 over the entire incoming hemisphere */
730 //% total /= (2.0f * 3.141592657f);
731 total *= ONE_OVER_2PI;
738 LightContributionTosample()
739 determines the amount of light reaching a sample (luxel or vertex) from a given light
742 int LightContributionToSample( trace_t *trace )
751 light = trace->light;
754 VectorClear( trace->color );
755 VectorClear( trace->colorNoShadow );
757 /* ydnar: early out */
758 if( !(light->flags & LIGHT_SURFACES) || light->envelope <= 0.0f )
761 /* do some culling checks */
762 if( light->type != EMIT_SUN )
764 /* MrE: if the light is behind the surface */
765 if( trace->twoSided == qfalse )
766 if( DotProduct( light->origin, trace->normal ) - DotProduct( trace->origin, trace->normal ) < 0.0f )
769 /* ydnar: test pvs */
770 if( !ClusterVisible( trace->cluster, light->cluster ) )
774 /* exact point to polygon form factor */
775 if( light->type == EMIT_AREA )
781 /* project sample point into light plane */
782 d = DotProduct( trace->origin, light->normal ) - light->dist;
785 /* sample point behind plane? */
786 if( !(light->flags & LIGHT_TWOSIDED) && d < -1.0f )
789 /* sample plane coincident? */
790 if( d > -3.0f && DotProduct( trace->normal, light->normal ) > 0.9f )
794 /* nudge the point so that it is clearly forward of the light */
795 /* so that surfaces meeting a light emiter don't get black edges */
796 if( d > -8.0f && d < 8.0f )
797 VectorMA( trace->origin, (8.0f - d), light->normal, pushedOrigin );
799 VectorCopy( trace->origin, pushedOrigin );
801 /* get direction and distance */
802 VectorCopy( light->origin, trace->end );
803 dist = SetupTrace( trace );
804 if( dist >= light->envelope )
807 /* ptpff approximation */
810 /* angle attenuation */
811 angle = DotProduct( trace->normal, trace->direction );
813 /* twosided lighting */
814 if( trace->twoSided )
815 angle = fabs( angle );
818 angle *= -DotProduct( light->normal, trace->direction );
821 else if( angle < 0.0f &&
822 (trace->twoSided || (light->flags & LIGHT_TWOSIDED)) )
824 add = light->photons / (dist * dist) * angle;
828 /* calculate the contribution */
829 factor = PointToPolygonFormFactor( pushedOrigin, trace->normal, light->w );
832 else if( factor < 0.0f )
834 /* twosided lighting */
835 if( trace->twoSided || (light->flags & LIGHT_TWOSIDED) )
839 /* push light origin to other side of the plane */
840 VectorMA( light->origin, -2.0f, light->normal, trace->end );
841 dist = SetupTrace( trace );
842 if( dist >= light->envelope )
849 /* ydnar: moved to here */
850 add = factor * light->add;
854 /* point/spot lights */
855 else if( light->type == EMIT_POINT || light->type == EMIT_SPOT )
857 /* get direction and distance */
858 VectorCopy( light->origin, trace->end );
859 dist = SetupTrace( trace );
860 if( dist >= light->envelope )
863 /* clamp the distance to prevent super hot spots */
867 /* angle attenuation */
868 if( light->flags & LIGHT_ATTEN_ANGLE )
870 /* standard Lambert attenuation */
871 float dot = DotProduct( trace->normal, trace->direction );
873 /* twosided lighting */
874 if( trace->twoSided )
877 /* jal: optional half Lambert attenuation (http://developer.valvesoftware.com/wiki/Half_Lambert) */
880 if( dot > 0.001f ) // skip coplanar
882 if( dot > 1.0f ) dot = 1.0f;
883 dot = ( dot * 0.5f ) + 0.5f;
895 if( light->angleScale != 0.0f )
897 angle /= light->angleScale;
903 if( light->flags & LIGHT_ATTEN_LINEAR )
905 add = angle * light->photons * linearScale - (dist * light->fade);
910 add = light->photons / (dist * dist) * angle;
912 /* handle spotlights */
913 if( light->type == EMIT_SPOT )
915 float distByNormal, radiusAtDist, sampleRadius;
916 vec3_t pointAtDist, distToSample;
918 /* do cone calculation */
919 distByNormal = -DotProduct( trace->displacement, light->normal );
920 if( distByNormal < 0.0f )
922 VectorMA( light->origin, distByNormal, light->normal, pointAtDist );
923 radiusAtDist = light->radiusByDist * distByNormal;
924 VectorSubtract( trace->origin, pointAtDist, distToSample );
925 sampleRadius = VectorLength( distToSample );
927 /* outside the cone */
928 if( sampleRadius >= radiusAtDist )
932 if( sampleRadius > (radiusAtDist - 32.0f) )
933 add *= ((radiusAtDist - sampleRadius) / 32.0f);
937 /* ydnar: sunlight */
938 else if( light->type == EMIT_SUN )
940 /* get origin and direction */
941 VectorAdd( trace->origin, light->origin, trace->end );
942 dist = SetupTrace( trace );
944 /* angle attenuation */
945 if( light->flags & LIGHT_ATTEN_ANGLE )
947 /* standard Lambert attenuation */
948 float dot = DotProduct( trace->normal, trace->direction );
950 /* twosided lighting */
951 if( trace->twoSided )
954 /* jal: optional half Lambert attenuation (http://developer.valvesoftware.com/wiki/Half_Lambert) */
957 if( dot > 0.001f ) // skip coplanar
959 if( dot > 1.0f ) dot = 1.0f;
960 dot = ( dot * 0.5f ) + 0.5f;
973 add = light->photons * angle;
977 /* VorteX: set noShadow color */
978 VectorScale(light->color, add, trace->colorNoShadow);
981 trace->testAll = qtrue;
982 VectorScale( light->color, add, trace->color );
985 if( trace->testOcclusion && !trace->forceSunlight )
989 if( !(trace->compileFlags & C_SKY) || trace->opaque )
991 VectorClear( trace->color );
996 /* return to sender */
1000 /* VorteX: set noShadow color */
1001 VectorScale(light->color, add, trace->colorNoShadow);
1003 /* ydnar: changed to a variable number */
1004 if( add <= 0.0f || (add <= light->falloffTolerance && (light->flags & LIGHT_FAST_ACTUAL)) )
1008 trace->testAll = qfalse;
1009 VectorScale( light->color, add, trace->color );
1013 if( trace->passSolid || trace->opaque )
1015 VectorClear( trace->color );
1019 /* return to sender */
1027 determines the amount of light reaching a sample (luxel or vertex)
1030 void LightingAtSample( trace_t *trace, byte styles[ MAX_LIGHTMAPS ], vec3_t colors[ MAX_LIGHTMAPS ] )
1036 for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
1037 VectorClear( colors[ lightmapNum ] );
1039 /* ydnar: normalmap */
1042 colors[ 0 ][ 0 ] = (trace->normal[ 0 ] + 1.0f) * 127.5f;
1043 colors[ 0 ][ 1 ] = (trace->normal[ 1 ] + 1.0f) * 127.5f;
1044 colors[ 0 ][ 2 ] = (trace->normal[ 2 ] + 1.0f) * 127.5f;
1048 /* ydnar: don't bounce ambient all the time */
1050 VectorCopy( ambientColor, colors[ 0 ] );
1052 /* ydnar: trace to all the list of lights pre-stored in tw */
1053 for( i = 0; i < trace->numLights && trace->lights[ i ] != NULL; i++ )
1056 trace->light = trace->lights[ i ];
1059 for( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
1061 if( styles[ lightmapNum ] == trace->light->style ||
1062 styles[ lightmapNum ] == LS_NONE )
1066 /* max of MAX_LIGHTMAPS (4) styles allowed to hit a sample */
1067 if( lightmapNum >= MAX_LIGHTMAPS )
1071 LightContributionToSample( trace );
1072 if( trace->color[ 0 ] == 0.0f && trace->color[ 1 ] == 0.0f && trace->color[ 2 ] == 0.0f )
1075 /* handle negative light */
1076 if( trace->light->flags & LIGHT_NEGATIVE )
1077 VectorScale( trace->color, -1.0f, trace->color );
1080 styles[ lightmapNum ] = trace->light->style;
1083 VectorAdd( colors[ lightmapNum ], trace->color, colors[ lightmapNum ] );
1087 colors[ 0 ][ 0 ] >= 255.0f &&
1088 colors[ 0 ][ 1 ] >= 255.0f &&
1089 colors[ 0 ][ 2 ] >= 255.0f )
1097 LightContributionToPoint()
1098 for a given light, how much light/color reaches a given point in space (with no facing)
1099 note: this is similar to LightContributionToSample() but optimized for omnidirectional sampling
1102 int LightContributionToPoint( trace_t *trace )
1109 light = trace->light;
1112 VectorClear( trace->color );
1114 /* ydnar: early out */
1115 if( !(light->flags & LIGHT_GRID) || light->envelope <= 0.0f )
1118 /* is this a sun? */
1119 if( light->type != EMIT_SUN )
1126 if( !ClusterVisible( trace->cluster, light->cluster ) )
1130 /* ydnar: check origin against light's pvs envelope */
1131 if( trace->origin[ 0 ] > light->maxs[ 0 ] || trace->origin[ 0 ] < light->mins[ 0 ] ||
1132 trace->origin[ 1 ] > light->maxs[ 1 ] || trace->origin[ 1 ] < light->mins[ 1 ] ||
1133 trace->origin[ 2 ] > light->maxs[ 2 ] || trace->origin[ 2 ] < light->mins[ 2 ] )
1139 /* set light origin */
1140 if( light->type == EMIT_SUN )
1141 VectorAdd( trace->origin, light->origin, trace->end );
1143 VectorCopy( light->origin, trace->end );
1146 dist = SetupTrace( trace );
1149 if( dist > light->envelope )
1151 gridEnvelopeCulled++;
1155 /* ptpff approximation */
1156 if( light->type == EMIT_AREA && faster )
1158 /* clamp the distance to prevent super hot spots */
1163 add = light->photons / (dist * dist);
1166 /* exact point to polygon form factor */
1167 else if( light->type == EMIT_AREA )
1170 vec3_t pushedOrigin;
1173 /* see if the point is behind the light */
1174 d = DotProduct( trace->origin, light->normal ) - light->dist;
1175 if( !(light->flags & LIGHT_TWOSIDED) && d < -1.0f )
1178 /* nudge the point so that it is clearly forward of the light */
1179 /* so that surfaces meeting a light emiter don't get black edges */
1180 if( d > -8.0f && d < 8.0f )
1181 VectorMA( trace->origin, (8.0f - d), light->normal, pushedOrigin );
1183 VectorCopy( trace->origin, pushedOrigin );
1185 /* calculate the contribution (ydnar 2002-10-21: [bug 642] bad normal calc) */
1186 factor = PointToPolygonFormFactor( pushedOrigin, trace->direction, light->w );
1187 if( factor == 0.0f )
1189 else if( factor < 0.0f )
1191 if( light->flags & LIGHT_TWOSIDED )
1197 /* ydnar: moved to here */
1198 add = factor * light->add;
1201 /* point/spot lights */
1202 else if( light->type == EMIT_POINT || light->type == EMIT_SPOT )
1204 /* clamp the distance to prevent super hot spots */
1209 if( light->flags & LIGHT_ATTEN_LINEAR )
1211 add = light->photons * linearScale - (dist * light->fade);
1216 add = light->photons / (dist * dist);
1218 /* handle spotlights */
1219 if( light->type == EMIT_SPOT )
1221 float distByNormal, radiusAtDist, sampleRadius;
1222 vec3_t pointAtDist, distToSample;
1225 /* do cone calculation */
1226 distByNormal = -DotProduct( trace->displacement, light->normal );
1227 if( distByNormal < 0.0f )
1229 VectorMA( light->origin, distByNormal, light->normal, pointAtDist );
1230 radiusAtDist = light->radiusByDist * distByNormal;
1231 VectorSubtract( trace->origin, pointAtDist, distToSample );
1232 sampleRadius = VectorLength( distToSample );
1234 /* outside the cone */
1235 if( sampleRadius >= radiusAtDist )
1239 if( sampleRadius > (radiusAtDist - 32.0f) )
1240 add *= ((radiusAtDist - sampleRadius) / 32.0f);
1244 /* ydnar: sunlight */
1245 else if( light->type == EMIT_SUN )
1248 add = light->photons;
1253 trace->testAll = qtrue;
1254 VectorScale( light->color, add, trace->color );
1256 /* trace to point */
1257 if( trace->testOcclusion && !trace->forceSunlight )
1261 if( !(trace->compileFlags & C_SKY) || trace->opaque )
1263 VectorClear( trace->color );
1268 /* return to sender */
1272 /* unknown light type */
1276 /* ydnar: changed to a variable number */
1277 if( add <= 0.0f || (add <= light->falloffTolerance && (light->flags & LIGHT_FAST_ACTUAL)) )
1281 trace->testAll = qfalse;
1282 VectorScale( light->color, add, trace->color );
1286 if( trace->passSolid )
1288 VectorClear( trace->color );
1292 /* we have a valid sample */
1300 grid samples are for quickly determining the lighting
1301 of dynamically placed entities in the world
1304 #define MAX_CONTRIBUTIONS 32768
1314 void TraceGrid( int num )
1316 int i, j, x, y, z, mod, numCon, numStyles;
1318 vec3_t baseOrigin, cheapColor, color, thisdir;
1320 bspGridPoint_t *bgp;
1321 contribution_t contributions[ MAX_CONTRIBUTIONS ];
1324 /* get grid points */
1325 gp = &rawGridPoints[ num ];
1326 bgp = &bspGridPoints[ num ];
1328 /* get grid origin */
1330 z = mod / (gridBounds[ 0 ] * gridBounds[ 1 ]);
1331 mod -= z * (gridBounds[ 0 ] * gridBounds[ 1 ]);
1332 y = mod / gridBounds[ 0 ];
1333 mod -= y * gridBounds[ 0 ];
1336 trace.origin[ 0 ] = gridMins[ 0 ] + x * gridSize[ 0 ];
1337 trace.origin[ 1 ] = gridMins[ 1 ] + y * gridSize[ 1 ];
1338 trace.origin[ 2 ] = gridMins[ 2 ] + z * gridSize[ 2 ];
1340 /* set inhibit sphere */
1341 if( gridSize[ 0 ] > gridSize[ 1 ] && gridSize[ 0 ] > gridSize[ 2 ] )
1342 trace.inhibitRadius = gridSize[ 0 ] * 0.5f;
1343 else if( gridSize[ 1 ] > gridSize[ 0 ] && gridSize[ 1 ] > gridSize[ 2 ] )
1344 trace.inhibitRadius = gridSize[ 1 ] * 0.5f;
1346 trace.inhibitRadius = gridSize[ 2 ] * 0.5f;
1348 /* find point cluster */
1349 trace.cluster = ClusterForPointExt( trace.origin, GRID_EPSILON );
1350 if( trace.cluster < 0 )
1352 /* try to nudge the origin around to find a valid point */
1353 VectorCopy( trace.origin, baseOrigin );
1354 for( step = 0; (step += 0.005) <= 1.0; )
1356 VectorCopy( baseOrigin, trace.origin );
1357 trace.origin[ 0 ] += step * (Random() - 0.5) * gridSize[0];
1358 trace.origin[ 1 ] += step * (Random() - 0.5) * gridSize[1];
1359 trace.origin[ 2 ] += step * (Random() - 0.5) * gridSize[2];
1361 /* ydnar: changed to find cluster num */
1362 trace.cluster = ClusterForPointExt( trace.origin, VERTEX_EPSILON );
1363 if( trace.cluster >= 0 )
1367 /* can't find a valid point at all */
1373 trace.testOcclusion = !noTrace;
1374 trace.forceSunlight = qfalse;
1375 trace.recvShadows = WORLDSPAWN_RECV_SHADOWS;
1376 trace.numSurfaces = 0;
1377 trace.surfaces = NULL;
1378 trace.numLights = 0;
1379 trace.lights = NULL;
1383 VectorClear( cheapColor );
1385 /* trace to all the lights, find the major light direction, and divide the
1386 total light between that along the direction and the remaining in the ambient */
1387 for( trace.light = lights; trace.light != NULL; trace.light = trace.light->next )
1393 if( !LightContributionToPoint( &trace ) )
1396 /* handle negative light */
1397 if( trace.light->flags & LIGHT_NEGATIVE )
1398 VectorScale( trace.color, -1.0f, trace.color );
1400 /* add a contribution */
1401 VectorCopy( trace.color, contributions[ numCon ].color );
1402 VectorCopy( trace.direction, contributions[ numCon ].dir );
1403 contributions[ numCon ].style = trace.light->style;
1406 /* push average direction around */
1407 addSize = VectorLength( trace.color );
1408 VectorMA( gp->dir, addSize, trace.direction, gp->dir );
1410 /* stop after a while */
1411 if( numCon >= (MAX_CONTRIBUTIONS - 1) )
1414 /* ydnar: cheap mode */
1415 VectorAdd( cheapColor, trace.color, cheapColor );
1416 if( cheapgrid && cheapColor[ 0 ] >= 255.0f && cheapColor[ 1 ] >= 255.0f && cheapColor[ 2 ] >= 255.0f )
1420 /////// Floodlighting for point //////////////////
1421 //do our floodlight ambient occlusion loop, and add a single contribution based on the brightest dir
1427 col[0]=col[1]=col[2]=floodlightIntensity;
1431 trace.testOcclusion = qtrue;
1432 trace.forceSunlight = qfalse;
1433 trace.inhibitRadius = DEFAULT_INHIBIT_RADIUS;
1434 trace.testAll = qtrue;
1438 if (q==0) //upper hemisphere
1444 else //lower hemisphere
1451 f = FloodLightForSample(&trace, floodlightDistance, floodlight_lowquality);
1453 contributions[ numCon ].color[0]=col[0]*f;
1454 contributions[ numCon ].color[1]=col[1]*f;
1455 contributions[ numCon ].color[2]=col[2]*f;
1457 contributions[ numCon ].dir[0]=dir[0];
1458 contributions[ numCon ].dir[1]=dir[1];
1459 contributions[ numCon ].dir[2]=dir[2];
1461 contributions[ numCon ].style = 0;
1463 /* push average direction around */
1464 addSize = VectorLength( col );
1465 VectorMA( gp->dir, addSize, dir, gp->dir );
1468 /////////////////////
1470 /* normalize to get primary light direction */
1471 VectorNormalize( gp->dir, thisdir );
1473 /* now that we have identified the primary light direction,
1474 go back and separate all the light into directed and ambient */
1477 for( i = 0; i < numCon; i++ )
1479 /* get relative directed strength */
1480 d = DotProduct( contributions[ i ].dir, thisdir );
1481 /* we map 1 to gridDirectionality, and 0 to gridAmbientDirectionality */
1482 d = gridAmbientDirectionality + d * (gridDirectionality - gridAmbientDirectionality);
1486 /* find appropriate style */
1487 for( j = 0; j < numStyles; j++ )
1489 if( gp->styles[ j ] == contributions[ i ].style )
1493 /* style not found? */
1494 if( j >= numStyles )
1496 /* add a new style */
1497 if( numStyles < MAX_LIGHTMAPS )
1499 gp->styles[ numStyles ] = contributions[ i ].style;
1500 bgp->styles[ numStyles ] = contributions[ i ].style;
1502 //% Sys_Printf( "(%d, %d) ", num, contributions[ i ].style );
1510 /* add the directed color */
1511 VectorMA( gp->directed[ j ], d, contributions[ i ].color, gp->directed[ j ] );
1513 /* ambient light will be at 1/4 the value of directed light */
1514 /* (ydnar: nuke this in favor of more dramatic lighting?) */
1515 /* (PM: how about actually making it work? d=1 when it got here for single lights/sun :P */
1517 /* (Hobbes: always setting it to .25 is hardly any better) */
1518 d = 0.25f * (1.0f - d);
1519 VectorMA( gp->ambient[ j ], d, contributions[ i ].color, gp->ambient[ j ] );
1523 * the total light average = ambient value + 0.25 * sum of all directional values
1524 * we can also get the total light average as 0.25 * the sum of all contributions
1526 * 0.25 * sum(contribution_i) == ambient + 0.25 * sum(d_i contribution_i)
1529 * ambient == 0.25 * sum((1 - d_i) contribution_i)
1531 * So, 0.25f * (1.0f - d) IS RIGHT. If you want to tune it, tune d BEFORE.
1536 /* store off sample */
1537 for( i = 0; i < MAX_LIGHTMAPS; i++ )
1540 /* do some fudging to keep the ambient from being too low (2003-07-05: 0.25 -> 0.125) */
1542 VectorMA( gp->ambient[ i ], 0.125f, gp->directed[ i ], gp->ambient[ i ] );
1545 /* set minimum light and copy off to bytes */
1546 VectorCopy( gp->ambient[ i ], color );
1547 for( j = 0; j < 3; j++ )
1548 if( color[ j ] < minGridLight[ j ] )
1549 color[ j ] = minGridLight[ j ];
1551 /* vortex: apply gridscale and gridambientscale here */
1552 ColorToBytes( color, bgp->ambient[ i ], gridScale*gridAmbientScale );
1553 ColorToBytes( gp->directed[ i ], bgp->directed[ i ], gridScale );
1558 //% Sys_FPrintf( SYS_VRB, "%10d %10d %10d ", &gp->ambient[ 0 ][ 0 ], &gp->ambient[ 0 ][ 1 ], &gp->ambient[ 0 ][ 2 ] );
1559 Sys_FPrintf( SYS_VRB, "%9d Amb: (%03.1f %03.1f %03.1f) Dir: (%03.1f %03.1f %03.1f)\n",
1561 gp->ambient[ 0 ][ 0 ], gp->ambient[ 0 ][ 1 ], gp->ambient[ 0 ][ 2 ],
1562 gp->directed[ 0 ][ 0 ], gp->directed[ 0 ][ 1 ], gp->directed[ 0 ][ 2 ] );
1565 /* store direction */
1566 NormalToLatLong( thisdir, bgp->latLong );
1573 calculates the size of the lightgrid and allocates memory
1576 void SetupGrid( void )
1579 vec3_t maxs, oldGridSize;
1584 /* don't do this if not grid lighting */
1585 if( noGridLighting )
1588 /* ydnar: set grid size */
1589 value = ValueForKey( &entities[ 0 ], "gridsize" );
1590 if( value[ 0 ] != '\0' )
1591 sscanf( value, "%f %f %f", &gridSize[ 0 ], &gridSize[ 1 ], &gridSize[ 2 ] );
1594 VectorCopy( gridSize, oldGridSize );
1595 for( i = 0; i < 3; i++ )
1596 gridSize[ i ] = gridSize[ i ] >= 8.0f ? floor( gridSize[ i ] ) : 8.0f;
1598 /* ydnar: increase gridSize until grid count is smaller than max allowed */
1599 numRawGridPoints = MAX_MAP_LIGHTGRID + 1;
1601 while( numRawGridPoints > MAX_MAP_LIGHTGRID )
1603 /* get world bounds */
1604 for( i = 0; i < 3; i++ )
1606 gridMins[ i ] = gridSize[ i ] * ceil( bspModels[ 0 ].mins[ i ] / gridSize[ i ] );
1607 maxs[ i ] = gridSize[ i ] * floor( bspModels[ 0 ].maxs[ i ] / gridSize[ i ] );
1608 gridBounds[ i ] = (maxs[ i ] - gridMins[ i ]) / gridSize[ i ] + 1;
1612 numRawGridPoints = gridBounds[ 0 ] * gridBounds[ 1 ] * gridBounds[ 2 ];
1614 /* increase grid size a bit */
1615 if( numRawGridPoints > MAX_MAP_LIGHTGRID )
1616 gridSize[ j++ % 3 ] += 16.0f;
1620 Sys_Printf( "Grid size = { %1.0f, %1.0f, %1.0f }\n", gridSize[ 0 ], gridSize[ 1 ], gridSize[ 2 ] );
1623 if( !VectorCompare( gridSize, oldGridSize ) )
1625 sprintf( temp, "%.0f %.0f %.0f", gridSize[ 0 ], gridSize[ 1 ], gridSize[ 2 ] );
1626 SetKeyValue( &entities[ 0 ], "gridsize", (const char*) temp );
1627 Sys_FPrintf( SYS_VRB, "Storing adjusted grid size\n" );
1630 /* 2nd variable. fixme: is this silly? */
1631 numBSPGridPoints = numRawGridPoints;
1633 /* allocate lightgrid */
1634 rawGridPoints = safe_malloc( numRawGridPoints * sizeof( *rawGridPoints ) );
1635 memset( rawGridPoints, 0, numRawGridPoints * sizeof( *rawGridPoints ) );
1637 if( bspGridPoints != NULL )
1638 free( bspGridPoints );
1639 bspGridPoints = safe_malloc( numBSPGridPoints * sizeof( *bspGridPoints ) );
1640 memset( bspGridPoints, 0, numBSPGridPoints * sizeof( *bspGridPoints ) );
1642 /* clear lightgrid */
1643 for( i = 0; i < numRawGridPoints; i++ )
1645 VectorCopy( ambientColor, rawGridPoints[ i ].ambient[ j ] );
1646 rawGridPoints[ i ].styles[ 0 ] = LS_NORMAL;
1647 bspGridPoints[ i ].styles[ 0 ] = LS_NORMAL;
1648 for( j = 1; j < MAX_LIGHTMAPS; j++ )
1650 rawGridPoints[ i ].styles[ j ] = LS_NONE;
1651 bspGridPoints[ i ].styles[ j ] = LS_NONE;
1656 Sys_Printf( "%9d grid points\n", numRawGridPoints );
1663 does what it says...
1666 void LightWorld( void )
1671 qboolean minVertex, minGrid, ps;
1675 /* ydnar: smooth normals */
1678 Sys_Printf( "--- SmoothNormals ---\n" );
1682 /* determine the number of grid points */
1683 Sys_Printf( "--- SetupGrid ---\n" );
1686 /* find the optional minimum lighting values */
1687 GetVectorForKey( &entities[ 0 ], "_color", color );
1688 if( VectorLength( color ) == 0.0f )
1689 VectorSet( color, 1.0, 1.0, 1.0 );
1692 f = FloatForKey( &entities[ 0 ], "_ambient" );
1694 f = FloatForKey( &entities[ 0 ], "ambient" );
1695 VectorScale( color, f, ambientColor );
1697 /* minvertexlight */
1699 value = ValueForKey( &entities[ 0 ], "_minvertexlight" );
1700 if( value[ 0 ] != '\0' )
1704 VectorScale( color, f, minVertexLight );
1709 value = ValueForKey( &entities[ 0 ], "_mingridlight" );
1710 if( value[ 0 ] != '\0' )
1714 VectorScale( color, f, minGridLight );
1718 value = ValueForKey( &entities[ 0 ], "_minlight" );
1719 if( value[ 0 ] != '\0' )
1722 VectorScale( color, f, minLight );
1723 if( minVertex == qfalse )
1724 VectorScale( color, f, minVertexLight );
1725 if( minGrid == qfalse )
1726 VectorScale( color, f, minGridLight );
1729 /* create world lights */
1730 Sys_FPrintf( SYS_VRB, "--- CreateLights ---\n" );
1731 CreateEntityLights();
1732 CreateSurfaceLights();
1733 Sys_Printf( "%9d point lights\n", numPointLights );
1734 Sys_Printf( "%9d spotlights\n", numSpotLights );
1735 Sys_Printf( "%9d diffuse (area) lights\n", numDiffuseLights );
1736 Sys_Printf( "%9d sun/sky lights\n", numSunLights );
1738 /* calculate lightgrid */
1739 if( !noGridLighting )
1741 /* ydnar: set up light envelopes */
1742 SetupEnvelopes( qtrue, fastgrid );
1744 Sys_Printf( "--- TraceGrid ---\n" );
1746 RunThreadsOnIndividual( numRawGridPoints, qtrue, TraceGrid );
1748 Sys_Printf( "%d x %d x %d = %d grid\n",
1749 gridBounds[ 0 ], gridBounds[ 1 ], gridBounds[ 2 ], numBSPGridPoints );
1751 /* ydnar: emit statistics on light culling */
1752 Sys_FPrintf( SYS_VRB, "%9d grid points envelope culled\n", gridEnvelopeCulled );
1753 Sys_FPrintf( SYS_VRB, "%9d grid points bounds culled\n", gridBoundsCulled );
1756 /* slight optimization to remove a sqrt */
1757 subdivideThreshold *= subdivideThreshold;
1759 /* map the world luxels */
1760 Sys_Printf( "--- MapRawLightmap ---\n" );
1761 RunThreadsOnIndividual( numRawLightmaps, qtrue, MapRawLightmap );
1762 Sys_Printf( "%9d luxels\n", numLuxels );
1763 Sys_Printf( "%9d luxels mapped\n", numLuxelsMapped );
1764 Sys_Printf( "%9d luxels occluded\n", numLuxelsOccluded );
1769 Sys_Printf( "--- DirtyRawLightmap ---\n" );
1774 RunThreadsOnIndividual( numRawLightmaps, qtrue, DirtyRawLightmap );
1777 /* floodlight pass */
1778 FloodlightRawLightmaps();
1780 /* ydnar: set up light envelopes */
1781 SetupEnvelopes( qfalse, fast );
1783 /* light up my world */
1784 lightsPlaneCulled = 0;
1785 lightsEnvelopeCulled = 0;
1786 lightsBoundsCulled = 0;
1787 lightsClusterCulled = 0;
1789 Sys_Printf( "--- IlluminateRawLightmap ---\n" );
1790 RunThreadsOnIndividual( numRawLightmaps, qtrue, IlluminateRawLightmap );
1791 Sys_Printf( "%9d luxels illuminated\n", numLuxelsIlluminated );
1793 StitchSurfaceLightmaps();
1795 Sys_Printf( "--- IlluminateVertexes ---\n" );
1796 RunThreadsOnIndividual( numBSPDrawSurfaces, qtrue, IlluminateVertexes );
1797 Sys_Printf( "%9d vertexes illuminated\n", numVertsIlluminated );
1799 /* ydnar: emit statistics on light culling */
1800 Sys_FPrintf( SYS_VRB, "%9d lights plane culled\n", lightsPlaneCulled );
1801 Sys_FPrintf( SYS_VRB, "%9d lights envelope culled\n", lightsEnvelopeCulled );
1802 Sys_FPrintf( SYS_VRB, "%9d lights bounds culled\n", lightsBoundsCulled );
1803 Sys_FPrintf( SYS_VRB, "%9d lights cluster culled\n", lightsClusterCulled );
1810 /* store off the bsp between bounces */
1811 StoreSurfaceLightmaps();
1813 Sys_Printf( "Writing %s\n", source );
1814 WriteBSPFile( source );
1817 Sys_Printf( "\n--- Radiosity (bounce %d of %d) ---\n", b, bt );
1821 VectorClear( ambientColor );
1822 floodlighty = qfalse;
1824 /* generate diffuse lights */
1826 RadCreateDiffuseLights();
1828 /* setup light envelopes */
1829 SetupEnvelopes( qfalse, fastbounce );
1830 if( numLights == 0 )
1832 Sys_Printf( "No diffuse light to calculate, ending radiosity.\n" );
1836 /* add to lightgrid */
1839 gridEnvelopeCulled = 0;
1840 gridBoundsCulled = 0;
1842 Sys_Printf( "--- BounceGrid ---\n" );
1844 RunThreadsOnIndividual( numRawGridPoints, qtrue, TraceGrid );
1846 Sys_FPrintf( SYS_VRB, "%9d grid points envelope culled\n", gridEnvelopeCulled );
1847 Sys_FPrintf( SYS_VRB, "%9d grid points bounds culled\n", gridBoundsCulled );
1850 /* light up my world */
1851 lightsPlaneCulled = 0;
1852 lightsEnvelopeCulled = 0;
1853 lightsBoundsCulled = 0;
1854 lightsClusterCulled = 0;
1856 Sys_Printf( "--- IlluminateRawLightmap ---\n" );
1857 RunThreadsOnIndividual( numRawLightmaps, qtrue, IlluminateRawLightmap );
1858 Sys_Printf( "%9d luxels illuminated\n", numLuxelsIlluminated );
1859 Sys_Printf( "%9d vertexes illuminated\n", numVertsIlluminated );
1861 StitchSurfaceLightmaps();
1863 Sys_Printf( "--- IlluminateVertexes ---\n" );
1864 RunThreadsOnIndividual( numBSPDrawSurfaces, qtrue, IlluminateVertexes );
1865 Sys_Printf( "%9d vertexes illuminated\n", numVertsIlluminated );
1867 /* ydnar: emit statistics on light culling */
1868 Sys_FPrintf( SYS_VRB, "%9d lights plane culled\n", lightsPlaneCulled );
1869 Sys_FPrintf( SYS_VRB, "%9d lights envelope culled\n", lightsEnvelopeCulled );
1870 Sys_FPrintf( SYS_VRB, "%9d lights bounds culled\n", lightsBoundsCulled );
1871 Sys_FPrintf( SYS_VRB, "%9d lights cluster culled\n", lightsClusterCulled );
1883 main routine for light processing
1886 int LightMain( int argc, char **argv )
1890 char mapSource[ 1024 ];
1892 int lightmapMergeSize = 0;
1896 Sys_Printf( "--- Light ---\n" );
1897 Sys_Printf( "--- ProcessGameSpecific ---\n" );
1899 /* set standard game flags */
1900 wolfLight = game->wolfLight;
1901 if (wolfLight == qtrue)
1902 Sys_Printf( " lightning model: wolf\n" );
1904 Sys_Printf( " lightning model: quake3\n" );
1906 lmCustomSize = game->lightmapSize;
1907 Sys_Printf( " lightmap size: %d x %d pixels\n", lmCustomSize, lmCustomSize );
1909 lightmapGamma = game->lightmapGamma;
1910 Sys_Printf( " lightning gamma: %f\n", lightmapGamma );
1912 lightmapCompensate = game->lightmapCompensate;
1913 Sys_Printf( " lightning compensation: %f\n", lightmapCompensate );
1915 lightmapExposure = game->lightmapExposure;
1916 Sys_Printf( " lightning exposure: %f\n", lightmapExposure );
1918 gridScale = game->gridScale;
1919 Sys_Printf( " lightgrid scale: %f\n", gridScale );
1921 gridAmbientScale = game->gridAmbientScale;
1922 Sys_Printf( " lightgrid ambient scale: %f\n", gridAmbientScale );
1924 lightAngleHL = game->lightAngleHL;
1926 Sys_Printf( " half lambert light angle attenuation enabled \n" );
1928 noStyles = game->noStyles;
1929 if (noStyles == qtrue)
1930 Sys_Printf( " shader lightstyles hack: disabled\n" );
1932 Sys_Printf( " shader lightstyles hack: enabled\n" );
1934 keepLights = game->keepLights;
1935 if (keepLights == qtrue)
1936 Sys_Printf( " keep lights: enabled\n" );
1938 Sys_Printf( " keep lights: disabled\n" );
1940 patchShadows = game->patchShadows;
1941 if (patchShadows == qtrue)
1942 Sys_Printf( " patch shadows: enabled\n" );
1944 Sys_Printf( " patch shadows: disabled\n" );
1946 deluxemap = game->deluxeMap;
1947 deluxemode = game->deluxeMode;
1948 if (deluxemap == qtrue)
1951 Sys_Printf( " deluxemapping: enabled with tangentspace deluxemaps\n" );
1953 Sys_Printf( " deluxemapping: enabled with modelspace deluxemaps\n" );
1956 Sys_Printf( " deluxemapping: disabled\n" );
1958 Sys_Printf( "--- ProcessCommandLine ---\n" );
1960 /* process commandline arguments */
1961 for( i = 1; i < (argc - 1); i++ )
1963 /* lightsource scaling */
1964 if( !strcmp( argv[ i ], "-point" ) || !strcmp( argv[ i ], "-pointscale" ) )
1966 f = atof( argv[ i + 1 ] );
1968 Sys_Printf( "Point (entity) light scaled by %f to %f\n", f, pointScale );
1972 else if( !strcmp( argv[ i ], "-area" ) || !strcmp( argv[ i ], "-areascale" ) )
1974 f = atof( argv[ i + 1 ] );
1976 Sys_Printf( "Area (shader) light scaled by %f to %f\n", f, areaScale );
1980 else if( !strcmp( argv[ i ], "-sky" ) || !strcmp( argv[ i ], "-skyscale" ) )
1982 f = atof( argv[ i + 1 ] );
1984 Sys_Printf( "Sky/sun light scaled by %f to %f\n", f, skyScale );
1988 else if( !strcmp( argv[ i ], "-bouncescale" ) )
1990 f = atof( argv[ i + 1 ] );
1992 Sys_Printf( "Bounce (radiosity) light scaled by %f to %f\n", f, bounceScale );
1996 else if( !strcmp( argv[ i ], "-scale" ) )
1998 f = atof( argv[ i + 1 ] );
2003 Sys_Printf( "All light scaled by %f\n", f );
2007 else if( !strcmp( argv[ i ], "-gridscale" ) )
2009 f = atof( argv[ i + 1 ] );
2010 Sys_Printf( "Grid lightning scaled by %f\n", f );
2015 else if( !strcmp( argv[ i ], "-gridambientscale" ) )
2017 f = atof( argv[ i + 1 ] );
2018 Sys_Printf( "Grid ambient lightning scaled by %f\n", f );
2019 gridAmbientScale *= f;
2023 else if( !strcmp( argv[ i ], "-griddirectionality" ) )
2025 f = atof( argv[ i + 1 ] );
2027 if(f > gridAmbientDirectionality) f = gridAmbientDirectionality;
2028 Sys_Printf( "Grid directionality is %f\n", f );
2029 gridDirectionality *= f;
2033 else if( !strcmp( argv[ i ], "-gridambientdirectionality" ) )
2035 f = atof( argv[ i + 1 ] );
2036 if(f > gridDirectionality) f = gridDirectionality;
2038 Sys_Printf( "Grid ambient directionality is %f\n", f );
2039 gridAmbientDirectionality *= f;
2043 else if( !strcmp( argv[ i ], "-gamma" ) )
2045 f = atof( argv[ i + 1 ] );
2047 Sys_Printf( "Lighting gamma set to %f\n", lightmapGamma );
2051 else if( !strcmp( argv[ i ], "-exposure" ) )
2053 f = atof( argv[ i + 1 ] );
2054 lightmapExposure = f;
2055 Sys_Printf( "Lighting exposure set to %f\n", lightmapExposure );
2059 else if( !strcmp( argv[ i ], "-compensate" ) )
2061 f = atof( argv[ i + 1 ] );
2064 lightmapCompensate = f;
2065 Sys_Printf( "Lighting compensation set to 1/%f\n", lightmapCompensate );
2069 /* ydnar switches */
2070 else if( !strcmp( argv[ i ], "-bounce" ) )
2072 bounce = atoi( argv[ i + 1 ] );
2075 else if( bounce > 0 )
2076 Sys_Printf( "Radiosity enabled with %d bounce(s)\n", bounce );
2080 else if( !strcmp( argv[ i ], "-supersample" ) || !strcmp( argv[ i ], "-super" ) )
2082 superSample = atoi( argv[ i + 1 ] );
2083 if( superSample < 1 )
2085 else if( superSample > 1 )
2086 Sys_Printf( "Ordered-grid supersampling enabled with %d sample(s) per lightmap texel\n", (superSample * superSample) );
2090 else if( !strcmp( argv[ i ], "-samples" ) )
2092 lightSamples = atoi( argv[ i + 1 ] );
2093 if( lightSamples < 1 )
2095 else if( lightSamples > 1 )
2096 Sys_Printf( "Adaptive supersampling enabled with %d sample(s) per lightmap texel\n", lightSamples );
2100 else if( !strcmp( argv[ i ], "-filter" ) )
2103 Sys_Printf( "Lightmap filtering enabled\n" );
2106 else if( !strcmp( argv[ i ], "-dark" ) )
2109 Sys_Printf( "Dark lightmap seams enabled\n" );
2112 else if( !strcmp( argv[ i ], "-shadeangle" ) )
2114 shadeAngleDegrees = atof( argv[ i + 1 ] );
2115 if( shadeAngleDegrees < 0.0f )
2116 shadeAngleDegrees = 0.0f;
2117 else if( shadeAngleDegrees > 0.0f )
2120 Sys_Printf( "Phong shading enabled with a breaking angle of %f degrees\n", shadeAngleDegrees );
2125 else if( !strcmp( argv[ i ], "-thresh" ) )
2127 subdivideThreshold = atof( argv[ i + 1 ] );
2128 if( subdivideThreshold < 0 )
2129 subdivideThreshold = DEFAULT_SUBDIVIDE_THRESHOLD;
2131 Sys_Printf( "Subdivision threshold set at %.3f\n", subdivideThreshold );
2135 else if( !strcmp( argv[ i ], "-approx" ) )
2137 approximateTolerance = atoi( argv[ i + 1 ] );
2138 if( approximateTolerance < 0 )
2139 approximateTolerance = 0;
2140 else if( approximateTolerance > 0 )
2141 Sys_Printf( "Approximating lightmaps within a byte tolerance of %d\n", approximateTolerance );
2144 else if( !strcmp( argv[ i ], "-deluxe" ) || !strcmp( argv[ i ], "-deluxemap" ) )
2147 Sys_Printf( "Generating deluxemaps for average light direction\n" );
2149 else if( !strcmp( argv[ i ], "-deluxemode" ))
2151 deluxemode = atoi( argv[ i + 1 ] );
2152 if (deluxemode == 0 || deluxemode > 1 || deluxemode < 0)
2154 Sys_Printf( "Generating modelspace deluxemaps\n" );
2158 Sys_Printf( "Generating tangentspace deluxemaps\n" );
2161 else if( !strcmp( argv[ i ], "-nodeluxe" ) || !strcmp( argv[ i ], "-nodeluxemap" ) )
2164 Sys_Printf( "Disabling generating of deluxemaps for average light direction\n" );
2166 else if( !strcmp( argv[ i ], "-external" ) )
2168 externalLightmaps = qtrue;
2169 Sys_Printf( "Storing all lightmaps externally\n" );
2172 else if( !strcmp( argv[ i ], "-lightmapsize" ) )
2174 lmCustomSize = atoi( argv[ i + 1 ] );
2176 /* must be a power of 2 and greater than 2 */
2177 if( ((lmCustomSize - 1) & lmCustomSize) || lmCustomSize < 2 )
2179 Sys_Printf( "WARNING: Lightmap size must be a power of 2, greater or equal to 2 pixels.\n" );
2180 lmCustomSize = game->lightmapSize;
2183 Sys_Printf( "Default lightmap size set to %d x %d pixels\n", lmCustomSize, lmCustomSize );
2185 /* enable external lightmaps */
2186 if( lmCustomSize != game->lightmapSize )
2188 externalLightmaps = qtrue;
2189 Sys_Printf( "Storing all lightmaps externally\n" );
2193 else if( !strcmp( argv[ i ], "-rawlightmapsizelimit" ) )
2195 lmLimitSize = atoi( argv[ i + 1 ] );
2198 Sys_Printf( "Raw lightmap size limit set to %d x %d pixels\n", lmLimitSize, lmLimitSize );
2201 else if( !strcmp( argv[ i ], "-lightmapdir" ) )
2203 lmCustomDir = argv[i + 1];
2205 Sys_Printf( "Lightmap directory set to %s\n", lmCustomDir );
2206 externalLightmaps = qtrue;
2207 Sys_Printf( "Storing all lightmaps externally\n" );
2210 /* ydnar: add this to suppress warnings */
2211 else if( !strcmp( argv[ i ], "-custinfoparms") )
2213 Sys_Printf( "Custom info parms enabled\n" );
2214 useCustomInfoParms = qtrue;
2217 else if( !strcmp( argv[ i ], "-wolf" ) )
2219 /* -game should already be set */
2221 Sys_Printf( "Enabling Wolf lighting model (linear default)\n" );
2224 else if( !strcmp( argv[ i ], "-q3" ) )
2226 /* -game should already be set */
2228 Sys_Printf( "Enabling Quake 3 lighting model (nonlinear default)\n" );
2231 else if( !strcmp( argv[ i ], "-sunonly" ) )
2234 Sys_Printf( "Only computing sunlight\n" );
2237 else if( !strcmp( argv[ i ], "-bounceonly" ) )
2240 Sys_Printf( "Storing bounced light (radiosity) only\n" );
2243 else if( !strcmp( argv[ i ], "-nocollapse" ) )
2246 Sys_Printf( "Identical lightmap collapsing disabled\n" );
2249 else if( !strcmp( argv[ i ], "-nolightmapsearch" ) )
2251 lightmapSearchBlockSize = 1;
2252 Sys_Printf( "No lightmap searching - all lightmaps will be sequential\n" );
2255 else if( !strcmp( argv[ i ], "-lightmapsearchpower" ) )
2257 lightmapMergeSize = (game->lightmapSize << atoi(argv[i+1]));
2259 Sys_Printf( "Restricted lightmap searching enabled - optimize for lightmap merge power %d (size %d)\n", atoi(argv[i]), lightmapMergeSize );
2262 else if( !strcmp( argv[ i ], "-lightmapsearchblocksize" ) )
2264 lightmapSearchBlockSize = atoi(argv[i+1]);
2266 Sys_Printf( "Restricted lightmap searching enabled - block size set to %d\n", lightmapSearchBlockSize );
2269 else if( !strcmp( argv[ i ], "-shade" ) )
2272 Sys_Printf( "Phong shading enabled\n" );
2275 else if( !strcmp( argv[ i ], "-bouncegrid") )
2279 Sys_Printf( "Grid lighting with radiosity enabled\n" );
2282 else if( !strcmp( argv[ i ], "-smooth" ) )
2284 lightSamples = EXTRA_SCALE;
2285 Sys_Printf( "The -smooth argument is deprecated, use \"-samples 2\" instead\n" );
2288 else if( !strcmp( argv[ i ], "-fast" ) )
2293 Sys_Printf( "Fast mode enabled\n" );
2296 else if( !strcmp( argv[ i ], "-faster" ) )
2302 Sys_Printf( "Faster mode enabled\n" );
2305 else if( !strcmp( argv[ i ], "-fastgrid" ) )
2308 Sys_Printf( "Fast grid lighting enabled\n" );
2311 else if( !strcmp( argv[ i ], "-fastbounce" ) )
2314 Sys_Printf( "Fast bounce mode enabled\n" );
2317 else if( !strcmp( argv[ i ], "-cheap" ) )
2321 Sys_Printf( "Cheap mode enabled\n" );
2324 else if( !strcmp( argv[ i ], "-cheapgrid" ) )
2327 Sys_Printf( "Cheap grid mode enabled\n" );
2330 else if( !strcmp( argv[ i ], "-normalmap" ) )
2333 Sys_Printf( "Storing normal map instead of lightmap\n" );
2336 else if( !strcmp( argv[ i ], "-trisoup" ) )
2339 Sys_Printf( "Converting brush faces to triangle soup\n" );
2342 else if( !strcmp( argv[ i ], "-debug" ) )
2345 Sys_Printf( "Lightmap debugging enabled\n" );
2348 else if( !strcmp( argv[ i ], "-debugsurfaces" ) || !strcmp( argv[ i ], "-debugsurface" ) )
2350 debugSurfaces = qtrue;
2351 Sys_Printf( "Lightmap surface debugging enabled\n" );
2354 else if( !strcmp( argv[ i ], "-debugunused" ) )
2356 debugUnused = qtrue;
2357 Sys_Printf( "Unused luxel debugging enabled\n" );
2360 else if( !strcmp( argv[ i ], "-debugaxis" ) )
2363 Sys_Printf( "Lightmap axis debugging enabled\n" );
2366 else if( !strcmp( argv[ i ], "-debugcluster" ) )
2368 debugCluster = qtrue;
2369 Sys_Printf( "Luxel cluster debugging enabled\n" );
2372 else if( !strcmp( argv[ i ], "-debugorigin" ) )
2374 debugOrigin = qtrue;
2375 Sys_Printf( "Luxel origin debugging enabled\n" );
2378 else if( !strcmp( argv[ i ], "-debugdeluxe" ) )
2381 debugDeluxemap = qtrue;
2382 Sys_Printf( "Deluxemap debugging enabled\n" );
2385 else if( !strcmp( argv[ i ], "-export" ) )
2387 exportLightmaps = qtrue;
2388 Sys_Printf( "Exporting lightmaps\n" );
2391 else if( !strcmp(argv[ i ], "-notrace" ))
2394 Sys_Printf( "Shadow occlusion disabled\n" );
2396 else if( !strcmp(argv[ i ], "-patchshadows" ) )
2398 patchShadows = qtrue;
2399 Sys_Printf( "Patch shadow casting enabled\n" );
2401 else if( !strcmp( argv[ i ], "-extra" ) )
2403 superSample = EXTRA_SCALE; /* ydnar */
2404 Sys_Printf( "The -extra argument is deprecated, use \"-super 2\" instead\n" );
2406 else if( !strcmp( argv[ i ], "-extrawide" ) )
2408 superSample = EXTRAWIDE_SCALE; /* ydnar */
2409 filter = qtrue; /* ydnar */
2410 Sys_Printf( "The -extrawide argument is deprecated, use \"-filter [-super 2]\" instead\n");
2412 else if( !strcmp( argv[ i ], "-samplesize" ) )
2414 sampleSize = atoi( argv[ i + 1 ] );
2415 if( sampleSize < 1 )
2418 Sys_Printf( "Default lightmap sample size set to %dx%d units\n", sampleSize, sampleSize );
2420 else if( !strcmp( argv[ i ], "-minsamplesize" ) )
2422 minSampleSize = atoi( argv[ i + 1 ] );
2423 if( minSampleSize < 1 )
2426 Sys_Printf( "Minimum lightmap sample size set to %dx%d units\n", minSampleSize, minSampleSize );
2428 else if( !strcmp( argv[ i ], "-samplescale" ) )
2430 sampleScale = atoi( argv[ i + 1 ] );
2432 Sys_Printf( "Lightmaps sample scale set to %d\n", sampleScale);
2434 else if( !strcmp( argv[ i ], "-novertex" ) )
2436 noVertexLighting = qtrue;
2437 Sys_Printf( "Disabling vertex lighting\n" );
2439 else if( !strcmp( argv[ i ], "-nogrid" ) )
2441 noGridLighting = qtrue;
2442 Sys_Printf( "Disabling grid lighting\n" );
2444 else if( !strcmp( argv[ i ], "-border" ) )
2446 lightmapBorder = qtrue;
2447 Sys_Printf( "Adding debug border to lightmaps\n" );
2449 else if( !strcmp( argv[ i ], "-nosurf" ) )
2452 Sys_Printf( "Not tracing against surfaces\n" );
2454 else if( !strcmp( argv[ i ], "-dump" ) )
2457 Sys_Printf( "Dumping radiosity lights into numbered prefabs\n" );
2459 else if( !strcmp( argv[ i ], "-lomem" ) )
2462 Sys_Printf( "Enabling low-memory (potentially slower) lighting mode\n" );
2464 else if( !strcmp( argv[ i ], "-lightanglehl" ) )
2466 if( ( atoi( argv[ i + 1 ] ) != 0 ) != lightAngleHL )
2468 lightAngleHL = ( atoi( argv[ i + 1 ] ) != 0 );
2470 Sys_Printf( "Enabling half lambert light angle attenuation\n" );
2472 Sys_Printf( "Disabling half lambert light angle attenuation\n" );
2475 else if( !strcmp( argv[ i ], "-nostyle" ) || !strcmp( argv[ i ], "-nostyles" ) )
2478 Sys_Printf( "Disabling lightstyles\n" );
2480 else if( !strcmp( argv[ i ], "-style" ) || !strcmp( argv[ i ], "-styles" ) )
2483 Sys_Printf( "Enabling lightstyles\n" );
2485 else if( !strcmp( argv[ i ], "-keeplights" ))
2488 Sys_Printf( "Leaving light entities on map after compile\n" );
2490 else if( !strcmp( argv[ i ], "-cpma" ) )
2493 Sys_Printf( "Enabling Challenge Pro Mode Asstacular Vertex Lighting Mode (tm)\n" );
2495 else if( !strcmp( argv[ i ], "-floodlight" ) )
2497 floodlighty = qtrue;
2498 Sys_Printf( "FloodLighting enabled\n" );
2500 else if( !strcmp( argv[ i ], "-debugnormals" ) )
2502 debugnormals = qtrue;
2503 Sys_Printf( "DebugNormals enabled\n" );
2505 else if( !strcmp( argv[ i ], "-lowquality" ) )
2507 floodlight_lowquality = qtrue;
2508 Sys_Printf( "Low Quality FloodLighting enabled\n" );
2511 /* r7: dirtmapping */
2512 else if( !strcmp( argv[ i ], "-dirty" ) )
2515 Sys_Printf( "Dirtmapping enabled\n" );
2517 else if( !strcmp( argv[ i ], "-dirtdebug" ) || !strcmp( argv[ i ], "-debugdirt" ) )
2520 Sys_Printf( "Dirtmap debugging enabled\n" );
2522 else if( !strcmp( argv[ i ], "-dirtmode" ) )
2524 dirtMode = atoi( argv[ i + 1 ] );
2525 if( dirtMode != 0 && dirtMode != 1 )
2528 Sys_Printf( "Enabling randomized dirtmapping\n" );
2530 Sys_Printf( "Enabling ordered dir mapping\n" );
2533 else if( !strcmp( argv[ i ], "-dirtdepth" ) )
2535 dirtDepth = atof( argv[ i + 1 ] );
2536 if( dirtDepth <= 0.0f )
2538 Sys_Printf( "Dirtmapping depth set to %.1f\n", dirtDepth );
2541 else if( !strcmp( argv[ i ], "-dirtscale" ) )
2543 dirtScale = atof( argv[ i + 1 ] );
2544 if( dirtScale <= 0.0f )
2546 Sys_Printf( "Dirtmapping scale set to %.1f\n", dirtScale );
2549 else if( !strcmp( argv[ i ], "-dirtgain" ) )
2551 dirtGain = atof( argv[ i + 1 ] );
2552 if( dirtGain <= 0.0f )
2554 Sys_Printf( "Dirtmapping gain set to %.1f\n", dirtGain );
2557 else if( !strcmp( argv[ i ], "-trianglecheck" ) )
2559 lightmapTriangleCheck = qtrue;
2561 else if( !strcmp( argv[ i ], "-extravisnudge" ) )
2563 lightmapExtraVisClusterNudge = qtrue;
2565 /* unhandled args */
2568 Sys_Printf( "WARNING: Unknown argument \"%s\"\n", argv[ i ] );
2573 /* fix up lightmap search power */
2574 if(lightmapMergeSize)
2576 lightmapSearchBlockSize = (lightmapMergeSize / lmCustomSize) * (lightmapMergeSize / lmCustomSize);
2577 if(lightmapSearchBlockSize < 1)
2578 lightmapSearchBlockSize = 1;
2580 Sys_Printf( "Restricted lightmap searching enabled - block size adjusted to %d\n", lightmapSearchBlockSize );
2583 /* clean up map name */
2584 strcpy( source, ExpandArg( argv[ i ] ) );
2585 StripExtension( source );
2586 DefaultExtension( source, ".bsp" );
2587 strcpy( mapSource, ExpandArg( argv[ i ] ) );
2588 StripExtension( mapSource );
2589 DefaultExtension( mapSource, ".map" );
2591 /* ydnar: set default sample size */
2592 SetDefaultSampleSize( sampleSize );
2594 /* ydnar: handle shaders */
2595 BeginMapShaderFile( source );
2599 Sys_Printf( "Loading %s\n", source );
2601 /* ydnar: load surface file */
2602 LoadSurfaceExtraFile( source );
2605 LoadBSPFile( source );
2607 /* parse bsp entities */
2610 /* inject command line parameters */
2611 InjectCommandLine(argv, 0, argc - 1);
2614 value = ValueForKey( &entities[ 0 ], "_keepLights" );
2615 if( value[ 0 ] != '1' )
2616 LoadMapFile( mapSource, qtrue );
2618 /* set the entity/model origins and init yDrawVerts */
2621 /* ydnar: set up optimization */
2625 SetupSurfaceLightmaps();
2627 /* initialize the surface facet tracing */
2630 /* light the world */
2633 /* ydnar: store off lightmaps */
2634 StoreSurfaceLightmaps();
2636 /* write out the bsp */
2638 Sys_Printf( "Writing %s\n", source );
2639 WriteBSPFile( source );
2641 /* ydnar: export lightmaps */
2642 if( exportLightmaps && !externalLightmaps )
2645 /* return to sender */