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 ){
48 float photons, d, angle, elevation, da, de;
59 if ( sun->numSamples < 1 ) {
64 photons = sun->photons / sun->numSamples;
66 /* create the right number of suns */
67 for ( i = 0; i < sun->numSamples; i++ )
69 /* calculate sun direction */
71 VectorCopy( sun->direction, direction );
76 sun->direction[ 0 ] = cos( angle ) * cos( elevation );
77 sun->direction[ 1 ] = sin( angle ) * cos( elevation );
78 sun->direction[ 2 ] = sin( elevation );
80 xz_dist = sqrt( x*x + z*z )
81 latitude = atan2( xz_dist, y ) * RADIANS
82 longitude = atan2( x, z ) * RADIANS
85 d = sqrt( sun->direction[ 0 ] * sun->direction[ 0 ] + sun->direction[ 1 ] * sun->direction[ 1 ] );
86 angle = atan2( sun->direction[ 1 ], sun->direction[ 0 ] );
87 elevation = atan2( sun->direction[ 2 ], d );
89 /* jitter the angles (loop to keep random sample within sun->deviance steridians) */
92 da = ( Random() * 2.0f - 1.0f ) * sun->deviance;
93 de = ( Random() * 2.0f - 1.0f ) * sun->deviance;
95 while ( ( da * da + de * de ) > ( sun->deviance * sun->deviance ) );
100 //% Sys_Printf( "%d: Angle: %3.4f Elevation: %3.3f\n", sun->numSamples, (angle / Q_PI * 180.0f), (elevation / Q_PI * 180.0f) );
102 /* create new vector */
103 direction[ 0 ] = cos( angle ) * cos( elevation );
104 direction[ 1 ] = sin( angle ) * cos( elevation );
105 direction[ 2 ] = sin( elevation );
110 light = safe_malloc( sizeof( *light ) );
111 memset( light, 0, sizeof( *light ) );
112 light->next = lights;
115 /* initialize the light */
116 light->flags = LIGHT_SUN_DEFAULT;
117 light->type = EMIT_SUN;
119 light->falloffTolerance = falloffTolerance;
120 light->filterRadius = sun->filterRadius / sun->numSamples;
121 light->style = noStyles ? LS_NORMAL : sun->style;
123 /* set the light's position out to infinity */
124 VectorMA( vec3_origin, ( MAX_WORLD_COORD * 8.0f ), direction, light->origin ); /* MAX_WORLD_COORD * 2.0f */
126 /* set the facing to be the inverse of the sun direction */
127 VectorScale( direction, -1.0, light->normal );
128 light->dist = DotProduct( light->origin, light->normal );
130 /* set color and photons */
131 VectorCopy( sun->color, light->color );
132 light->photons = photons * skyScale;
136 if ( sun->next != NULL ) {
137 CreateSunLight( sun->next );
144 CreateSkyLights() - ydnar
145 simulates sky light with multiple suns
148 static void CreateSkyLights( vec3_t color, float value, int iterations, float filterRadius, int style ){
150 int angleSteps, elevationSteps;
151 float angle, elevation;
152 float angleStep, elevationStep;
157 if ( value <= 0.0f || iterations < 2 ) {
161 /* basic sun setup */
162 VectorCopy( color, sun.color );
164 sun.filterRadius = filterRadius;
166 sun.style = noStyles ? LS_NORMAL : style;
170 elevationSteps = iterations - 1;
171 angleSteps = elevationSteps * 4;
173 elevationStep = DEG2RAD( 90.0f / iterations ); /* skip elevation 0 */
174 angleStep = DEG2RAD( 360.0f / angleSteps );
176 /* calc individual sun brightness */
177 numSuns = angleSteps * elevationSteps + 1;
178 sun.photons = value / numSuns;
180 /* iterate elevation */
181 elevation = elevationStep * 0.5f;
183 for ( i = 0, elevation = elevationStep * 0.5f; i < elevationSteps; i++ )
186 for ( j = 0; j < angleSteps; j++ )
189 sun.direction[ 0 ] = cos( angle ) * cos( elevation );
190 sun.direction[ 1 ] = sin( angle ) * cos( elevation );
191 sun.direction[ 2 ] = sin( elevation );
192 CreateSunLight( &sun );
199 elevation += elevationStep;
200 angle += angleStep / elevationSteps;
203 /* create vertical sun */
204 VectorSet( sun.direction, 0.0f, 0.0f, 1.0f );
205 CreateSunLight( &sun );
215 creates lights from light entities
218 void CreateEntityLights( void ){
220 light_t *light, *light2;
226 float intensity, scale, deviance, filterRadius;
227 int spawnflags, flags, numSamples;
231 /* go throught entity list and find lights */
232 for ( i = 0; i < numEntities; i++ )
236 name = ValueForKey( e, "classname" );
238 /* ydnar: check for lightJunior */
239 if ( Q_strncasecmp( name, "lightJunior", 11 ) == 0 ) {
242 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 ) {
257 light = safe_malloc( sizeof( *light ) );
258 memset( light, 0, sizeof( *light ) );
259 light->next = lights;
262 /* handle spawnflags */
263 spawnflags = IntForKey( e, "spawnflags" );
265 /* ydnar: quake 3+ light behavior */
266 if ( wolfLight == qfalse ) {
267 /* set default flags */
268 flags = LIGHT_Q3A_DEFAULT;
270 /* linear attenuation? */
271 if ( spawnflags & 1 ) {
272 flags |= LIGHT_ATTEN_LINEAR;
273 flags &= ~LIGHT_ATTEN_ANGLE;
276 /* no angle attenuate? */
277 if ( spawnflags & 2 ) {
278 flags &= ~LIGHT_ATTEN_ANGLE;
282 /* ydnar: wolf light behavior */
285 /* set default flags */
286 flags = LIGHT_WOLF_DEFAULT;
288 /* inverse distance squared attenuation? */
289 if ( spawnflags & 1 ) {
290 flags &= ~LIGHT_ATTEN_LINEAR;
291 flags |= LIGHT_ATTEN_ANGLE;
294 /* angle attenuate? */
295 if ( spawnflags & 2 ) {
296 flags |= LIGHT_ATTEN_ANGLE;
300 /* other flags (borrowed from wolf) */
302 /* wolf dark light? */
303 if ( ( spawnflags & 4 ) || ( spawnflags & 8 ) ) {
308 if ( spawnflags & 16 ) {
309 flags &= ~LIGHT_GRID;
315 flags &= ~LIGHT_SURFACES;
318 /* vortex: unnormalized? */
319 if ( spawnflags & 32 ) {
320 flags |= LIGHT_UNNORMALIZED;
323 /* vortex: distance atten? */
324 if ( spawnflags & 64 ) {
325 flags |= LIGHT_ATTEN_DISTANCE;
328 /* store the flags */
329 light->flags = flags;
331 /* ydnar: set fade key (from wolf) */
333 if ( light->flags & LIGHT_ATTEN_LINEAR ) {
334 light->fade = FloatForKey( e, "fade" );
335 if ( light->fade == 0.0f ) {
340 /* ydnar: set angle scaling (from vlight) */
341 light->angleScale = FloatForKey( e, "_anglescale" );
342 if ( light->angleScale != 0.0f ) {
343 light->flags |= LIGHT_ATTEN_ANGLE;
347 GetVectorForKey( e, "origin", light->origin );
348 light->style = IntForKey( e, "_style" );
349 if ( light->style == LS_NORMAL ) {
350 light->style = IntForKey( e, "style" );
352 if ( light->style < LS_NORMAL || light->style >= LS_NONE ) {
353 Error( "Invalid lightstyle (%d) on entity %d", light->style, i );
356 if ( light->style != LS_NORMAL ) {
357 Sys_FPrintf( SYS_WRN, "WARNING: Styled light found targeting %s\n **", target );
360 /* set light intensity */
361 intensity = FloatForKey( e, "_light" );
362 if ( intensity == 0.0f ) {
363 intensity = FloatForKey( e, "light" );
365 if ( intensity == 0.0f ) {
369 /* ydnar: set light scale (sof2) */
370 scale = FloatForKey( e, "scale" );
371 if ( scale == 0.0f ) {
376 /* ydnar: get deviance and samples */
377 deviance = FloatForKey( e, "_deviance" );
378 if ( deviance == 0.0f ) {
379 deviance = FloatForKey( e, "_deviation" );
381 if ( deviance == 0.0f ) {
382 deviance = FloatForKey( e, "_jitter" );
384 numSamples = IntForKey( e, "_samples" );
385 if ( deviance < 0.0f || numSamples < 1 ) {
389 intensity /= numSamples;
391 /* ydnar: get filter radius */
392 filterRadius = FloatForKey( e, "_filterradius" );
393 if ( filterRadius == 0.0f ) {
394 filterRadius = FloatForKey( e, "_filteradius" );
396 if ( filterRadius == 0.0f ) {
397 filterRadius = FloatForKey( e, "_filter" );
399 if ( filterRadius < 0.0f ) {
402 light->filterRadius = filterRadius;
404 /* set light color */
405 _color = ValueForKey( e, "_color" );
406 if ( _color && _color[ 0 ] ) {
407 sscanf( _color, "%f %f %f", &light->color[ 0 ], &light->color[ 1 ], &light->color[ 2 ] );
409 light->color[0] = Image_LinearFloatFromsRGBFloat( light->color[0] );
410 light->color[1] = Image_LinearFloatFromsRGBFloat( light->color[1] );
411 light->color[2] = Image_LinearFloatFromsRGBFloat( light->color[2] );
413 if ( !( light->flags & LIGHT_UNNORMALIZED ) ) {
414 ColorNormalize( light->color, light->color );
418 light->color[ 0 ] = light->color[ 1 ] = light->color[ 2 ] = 1.0f;
421 light->extraDist = FloatForKey( e, "_extradist" );
422 if ( light->extraDist == 0.0f ) {
423 light->extraDist = extraDist;
426 light->photons = intensity;
428 light->type = EMIT_POINT;
430 /* set falloff threshold */
431 light->falloffTolerance = falloffTolerance / numSamples;
433 /* lights with a target will be spotlights */
434 target = ValueForKey( e, "target" );
443 e2 = FindTargetEntity( target );
445 Sys_Printf( "WARNING: light at (%i %i %i) has missing target\n",
446 (int) light->origin[ 0 ], (int) light->origin[ 1 ], (int) light->origin[ 2 ] );
447 light->photons *= pointScale;
451 /* not a point light */
455 /* make a spotlight */
456 GetVectorForKey( e2, "origin", dest );
457 VectorSubtract( dest, light->origin, light->normal );
458 dist = VectorNormalize( light->normal, light->normal );
459 radius = FloatForKey( e, "radius" );
466 light->radiusByDist = ( radius + 16 ) / dist;
467 light->type = EMIT_SPOT;
469 /* ydnar: wolf mods: spotlights always use nonlinear + angle attenuation */
470 light->flags &= ~LIGHT_ATTEN_LINEAR;
471 light->flags |= LIGHT_ATTEN_ANGLE;
474 /* ydnar: is this a sun? */
475 _sun = ValueForKey( e, "_sun" );
476 if ( _sun[ 0 ] == '1' ) {
477 /* not a spot light */
480 /* unlink this light */
481 lights = light->next;
484 VectorScale( light->normal, -1.0f, sun.direction );
485 VectorCopy( light->color, sun.color );
486 sun.photons = intensity;
487 sun.deviance = deviance / 180.0f * Q_PI;
488 sun.numSamples = numSamples;
489 sun.style = noStyles ? LS_NORMAL : light->style;
492 /* make a sun light */
493 CreateSunLight( &sun );
495 /* free original light */
499 /* skip the rest of this love story */
504 light->photons *= spotScale;
509 light->photons *= pointScale;
512 /* jitter the light */
513 for ( j = 1; j < numSamples; j++ )
516 light2 = safe_malloc( sizeof( *light ) );
517 memcpy( light2, light, sizeof( *light ) );
518 light2->next = lights;
522 if ( light->type == EMIT_SPOT ) {
530 light2->origin[ 0 ] = light->origin[ 0 ] + ( Random() * 2.0f - 1.0f ) * deviance;
531 light2->origin[ 1 ] = light->origin[ 1 ] + ( Random() * 2.0f - 1.0f ) * deviance;
532 light2->origin[ 2 ] = light->origin[ 2 ] + ( Random() * 2.0f - 1.0f ) * deviance;
540 CreateSurfaceLights() - ydnar
541 this hijacks the radiosity code to generate surface lights for first pass
544 #define APPROX_BOUNCE 1.0f
546 void CreateSurfaceLights( void ){
548 bspDrawSurface_t *ds;
558 /* get sun shader supressor */
559 nss = ValueForKey( &entities[ 0 ], "_noshadersun" );
561 /* walk the list of surfaces */
562 for ( i = 0; i < numBSPDrawSurfaces; i++ )
564 /* get surface and other bits */
565 ds = &bspDrawSurfaces[ i ];
566 info = &surfaceInfos[ i ];
570 if ( si->sun != NULL && nss[ 0 ] != '1' ) {
571 Sys_FPrintf( SYS_VRB, "Sun: %s\n", si->shader );
572 CreateSunLight( si->sun );
573 si->sun = NULL; /* FIXME: leak! */
577 if ( si->skyLightValue > 0.0f ) {
578 Sys_FPrintf( SYS_VRB, "Sky: %s\n", si->shader );
579 CreateSkyLights( si->color, si->skyLightValue, si->skyLightIterations, si->lightFilterRadius, si->lightStyle );
580 si->skyLightValue = 0.0f; /* FIXME: hack! */
583 /* try to early out */
584 if ( si->value <= 0 ) {
588 /* autosprite shaders become point lights */
589 if ( si->autosprite ) {
590 /* create an average xyz */
591 VectorAdd( info->mins, info->maxs, origin );
592 VectorScale( origin, 0.5f, origin );
595 light = safe_malloc( sizeof( *light ) );
596 memset( light, 0, sizeof( *light ) );
597 light->next = lights;
601 light->flags = LIGHT_Q3A_DEFAULT;
602 light->type = EMIT_POINT;
603 light->photons = si->value * pointScale;
606 VectorCopy( origin, light->origin );
607 VectorCopy( si->color, light->color );
608 light->falloffTolerance = falloffTolerance;
609 light->style = si->lightStyle;
611 /* add to point light count and continue */
616 /* get subdivision amount */
617 if ( si->lightSubdivide > 0 ) {
618 subdivide = si->lightSubdivide;
621 subdivide = defaultLightSubdivide;
625 switch ( ds->surfaceType )
628 case MST_TRIANGLE_SOUP:
629 RadLightForTriangles( i, 0, info->lm, si, APPROX_BOUNCE, subdivide, &cw );
633 RadLightForPatch( i, 0, info->lm, si, APPROX_BOUNCE, subdivide, &cw );
646 find the offset values for inline models
649 void SetEntityOrigins( void ){
656 bspDrawSurface_t *ds;
659 /* ydnar: copy drawverts into private storage for nefarious purposes */
660 yDrawVerts = safe_malloc( numBSPDrawVerts * sizeof( bspDrawVert_t ) );
661 memcpy( yDrawVerts, bspDrawVerts, numBSPDrawVerts * sizeof( bspDrawVert_t ) );
663 /* set the entity origins */
664 for ( i = 0; i < numEntities; i++ )
666 /* get entity and model */
668 key = ValueForKey( e, "model" );
669 if ( key[ 0 ] != '*' ) {
672 modelnum = atoi( key + 1 );
673 dm = &bspModels[ modelnum ];
675 /* get entity origin */
676 key = ValueForKey( e, "origin" );
677 if ( key[ 0 ] == '\0' ) {
680 GetVectorForKey( e, "origin", origin );
682 /* set origin for all surfaces for this model */
683 for ( j = 0; j < dm->numBSPSurfaces; j++ )
686 ds = &bspDrawSurfaces[ dm->firstBSPSurface + j ];
689 for ( k = 0; k < ds->numVerts; k++ )
691 f = ds->firstVert + k;
692 VectorAdd( origin, bspDrawVerts[ f ].xyz, yDrawVerts[ f ].xyz );
701 PointToPolygonFormFactor()
702 calculates the area over a point/normal hemisphere a winding covers
703 ydnar: fixme: there has to be a faster way to calculate this
704 without the expensive per-vert sqrts and transcendental functions
705 ydnar 2002-09-30: added -faster switch because only 19% deviance > 10%
706 between this and the approximation
709 #define ONE_OVER_2PI 0.159154942f //% (1.0f / (2.0f * 3.141592657f))
711 float PointToPolygonFormFactor( const vec3_t point, const vec3_t normal, const winding_t *w ){
712 vec3_t triVector, triNormal;
714 vec3_t dirs[ MAX_POINTS_ON_WINDING ];
716 float dot, angle, facing;
719 /* this is expensive */
720 for ( i = 0; i < w->numpoints; i++ )
722 VectorSubtract( w->p[ i ], point, dirs[ i ] );
723 VectorFastNormalize( dirs[ i ], dirs[ i ] );
726 /* duplicate first vertex to avoid mod operation */
727 VectorCopy( dirs[ 0 ], dirs[ i ] );
729 /* calculcate relative area */
731 for ( i = 0; i < w->numpoints; i++ )
735 dot = DotProduct( dirs[ i ], dirs[ j ] );
737 /* roundoff can cause slight creep, which gives an IND from acos */
741 else if ( dot < -1.0f ) {
748 CrossProduct( dirs[ i ], dirs[ j ], triVector );
749 if ( VectorFastNormalize( triVector, triNormal ) < 0.0001f ) {
753 facing = DotProduct( normal, triNormal );
754 total += facing * angle;
756 /* ydnar: this was throwing too many errors with radiosity + crappy maps. ignoring it. */
757 if ( total > 6.3f || total < -6.3f ) {
762 /* now in the range of 0 to 1 over the entire incoming hemisphere */
763 //% total /= (2.0f * 3.141592657f);
764 total *= ONE_OVER_2PI;
771 LightContributionTosample()
772 determines the amount of light reaching a sample (luxel or vertex) from a given light
775 int LightContributionToSample( trace_t *trace ){
780 float addDeluxe = 0.0f, addDeluxeBounceScale = 0.25f;
781 qboolean angledDeluxe = qtrue;
782 float colorBrightness;
783 qboolean doAddDeluxe = qtrue;
786 light = trace->light;
789 trace->forceSubsampling = 0.0f; /* to make sure */
790 VectorClear( trace->color );
791 VectorClear( trace->colorNoShadow );
792 VectorClear( trace->directionContribution );
794 colorBrightness = RGBTOGRAY( light->color ) * ( 1.0f / 255.0f );
796 /* ydnar: early out */
797 if ( !( light->flags & LIGHT_SURFACES ) || light->envelope <= 0.0f ) {
801 /* do some culling checks */
802 if ( light->type != EMIT_SUN ) {
803 /* MrE: if the light is behind the surface */
804 if ( trace->twoSided == qfalse ) {
805 if ( DotProduct( light->origin, trace->normal ) - DotProduct( trace->origin, trace->normal ) < 0.0f ) {
810 /* ydnar: test pvs */
811 if ( !ClusterVisible( trace->cluster, light->cluster ) ) {
816 /* exact point to polygon form factor */
817 if ( light->type == EMIT_AREA ) {
822 /* project sample point into light plane */
823 d = DotProduct( trace->origin, light->normal ) - light->dist;
825 /* sample point behind plane? */
826 if ( !( light->flags & LIGHT_TWOSIDED ) && d < -1.0f ) {
830 /* sample plane coincident? */
831 if ( d > -3.0f && DotProduct( trace->normal, light->normal ) > 0.9f ) {
836 /* nudge the point so that it is clearly forward of the light */
837 /* so that surfaces meeting a light emitter don't get black edges */
838 if ( d > -8.0f && d < 8.0f ) {
839 VectorMA( trace->origin, ( 8.0f - d ), light->normal, pushedOrigin );
842 VectorCopy( trace->origin, pushedOrigin );
845 /* get direction and distance */
846 VectorCopy( light->origin, trace->end );
847 dist = SetupTrace( trace );
848 if ( dist >= light->envelope ) {
852 /* ptpff approximation */
854 /* angle attenuation */
855 angle = DotProduct( trace->normal, trace->direction );
857 /* twosided lighting */
858 if ( trace->twoSided && angle < 0 ) {
861 /* no deluxemap contribution from "other side" light */
862 doAddDeluxe = qfalse;
866 angle *= -DotProduct( light->normal, trace->direction );
867 if ( angle == 0.0f ) {
870 else if ( angle < 0.0f &&
871 ( trace->twoSided || ( light->flags & LIGHT_TWOSIDED ) ) ) {
874 /* no deluxemap contribution from "other side" light */
875 doAddDeluxe = qfalse;
878 /* clamp the distance to prevent super hot spots */
879 dist = sqrt( dist * dist + light->extraDist * light->extraDist );
880 if ( dist < 16.0f ) {
884 add = light->photons / ( dist * dist ) * angle;
887 if ( angledDeluxe ) {
888 addDeluxe = light->photons / ( dist * dist ) * angle;
891 addDeluxe = light->photons / ( dist * dist );
897 /* calculate the contribution */
898 factor = PointToPolygonFormFactor( pushedOrigin, trace->normal, light->w );
899 if ( factor == 0.0f ) {
902 else if ( factor < 0.0f ) {
903 /* twosided lighting */
904 if ( trace->twoSided || ( light->flags & LIGHT_TWOSIDED ) ) {
907 /* push light origin to other side of the plane */
908 VectorMA( light->origin, -2.0f, light->normal, trace->end );
909 dist = SetupTrace( trace );
910 if ( dist >= light->envelope ) {
914 /* no deluxemap contribution from "other side" light */
915 doAddDeluxe = qfalse;
922 /* also don't deluxe if the direction is on the wrong side */
923 if ( DotProduct( trace->normal, trace->direction ) < 0 ) {
924 /* no deluxemap contribution from "other side" light */
925 doAddDeluxe = qfalse;
928 /* ydnar: moved to here */
929 add = factor * light->add;
937 /* point/spot lights */
938 else if ( light->type == EMIT_POINT || light->type == EMIT_SPOT ) {
939 /* get direction and distance */
940 VectorCopy( light->origin, trace->end );
941 dist = SetupTrace( trace );
942 if ( dist >= light->envelope ) {
946 /* clamp the distance to prevent super hot spots */
947 dist = sqrt( dist * dist + light->extraDist * light->extraDist );
948 if ( dist < 16.0f ) {
952 /* angle attenuation */
953 if ( light->flags & LIGHT_ATTEN_ANGLE ) {
954 /* standard Lambert attenuation */
955 float dot = DotProduct( trace->normal, trace->direction );
957 /* twosided lighting */
958 if ( trace->twoSided && dot < 0 ) {
961 /* no deluxemap contribution from "other side" light */
962 doAddDeluxe = qfalse;
965 /* jal: optional half Lambert attenuation (http://developer.valvesoftware.com/wiki/Half_Lambert) */
966 if ( lightAngleHL ) {
967 if ( dot > 0.001f ) { // skip coplanar
971 dot = ( dot * 0.5f ) + 0.5f;
985 if ( light->angleScale != 0.0f ) {
986 angle /= light->angleScale;
987 if ( angle > 1.0f ) {
993 if ( light->flags & LIGHT_ATTEN_LINEAR ) {
994 add = angle * light->photons * linearScale - ( dist * light->fade );
1000 if ( angledDeluxe ) {
1001 addDeluxe = angle * light->photons * linearScale - ( dist * light->fade );
1004 addDeluxe = light->photons * linearScale - ( dist * light->fade );
1007 if ( addDeluxe < 0.0f ) {
1014 add = ( light->photons / ( dist * dist ) ) * angle;
1020 if ( angledDeluxe ) {
1021 addDeluxe = ( light->photons / ( dist * dist ) ) * angle;
1024 addDeluxe = ( light->photons / ( dist * dist ) );
1028 if ( addDeluxe < 0.0f ) {
1033 /* handle spotlights */
1034 if ( light->type == EMIT_SPOT ) {
1035 float distByNormal, radiusAtDist, sampleRadius;
1036 vec3_t pointAtDist, distToSample;
1038 /* do cone calculation */
1039 distByNormal = -DotProduct( trace->displacement, light->normal );
1040 if ( distByNormal < 0.0f ) {
1043 VectorMA( light->origin, distByNormal, light->normal, pointAtDist );
1044 radiusAtDist = light->radiusByDist * distByNormal;
1045 VectorSubtract( trace->origin, pointAtDist, distToSample );
1046 sampleRadius = VectorLength( distToSample );
1048 /* outside the cone */
1049 if ( sampleRadius >= radiusAtDist ) {
1054 if ( sampleRadius > ( radiusAtDist - 32.0f ) ) {
1055 add *= ( ( radiusAtDist - sampleRadius ) / 32.0f );
1060 addDeluxe *= ( ( radiusAtDist - sampleRadius ) / 32.0f );
1062 if ( addDeluxe < 0.0f ) {
1069 /* ydnar: sunlight */
1070 else if ( light->type == EMIT_SUN ) {
1071 /* get origin and direction */
1072 VectorAdd( trace->origin, light->origin, trace->end );
1073 dist = SetupTrace( trace );
1075 /* angle attenuation */
1076 if ( light->flags & LIGHT_ATTEN_ANGLE ) {
1077 /* standard Lambert attenuation */
1078 float dot = DotProduct( trace->normal, trace->direction );
1080 /* twosided lighting */
1081 if ( trace->twoSided && dot < 0 ) {
1084 /* no deluxemap contribution from "other side" light */
1085 doAddDeluxe = qfalse;
1088 /* jal: optional half Lambert attenuation (http://developer.valvesoftware.com/wiki/Half_Lambert) */
1089 if ( lightAngleHL ) {
1090 if ( dot > 0.001f ) { // skip coplanar
1094 dot = ( dot * 0.5f ) + 0.5f;
1109 add = light->photons * angle;
1112 if ( angledDeluxe ) {
1113 addDeluxe = light->photons * angle;
1116 addDeluxe = light->photons;
1119 if ( addDeluxe < 0.0f ) {
1124 if ( add <= 0.0f ) {
1128 /* VorteX: set noShadow color */
1129 VectorScale( light->color, add, trace->colorNoShadow );
1131 addDeluxe *= colorBrightness;
1134 addDeluxe *= addDeluxeBounceScale;
1135 if ( addDeluxe < 0.00390625f ) {
1136 addDeluxe = 0.00390625f;
1140 VectorScale( trace->direction, addDeluxe, trace->directionContribution );
1143 trace->testAll = qtrue;
1144 VectorScale( light->color, add, trace->color );
1146 /* trace to point */
1147 if ( trace->testOcclusion && !trace->forceSunlight ) {
1150 trace->forceSubsampling *= add;
1151 if ( !( trace->compileFlags & C_SKY ) || trace->opaque ) {
1152 VectorClear( trace->color );
1153 VectorClear( trace->directionContribution );
1159 /* return to sender */
1163 Error( "Light of undefined type!" );
1166 /* VorteX: set noShadow color */
1167 VectorScale( light->color, add, trace->colorNoShadow );
1169 /* ydnar: changed to a variable number */
1170 if ( add <= 0.0f || ( add <= light->falloffTolerance && ( light->flags & LIGHT_FAST_ACTUAL ) ) ) {
1174 addDeluxe *= colorBrightness;
1176 /* hack land: scale down the radiosity contribution to light directionality.
1177 Deluxemaps fusion many light directions into one. In a rtl process all lights
1178 would contribute individually to the bump map, so several light sources together
1179 would make it more directional (example: a yellow and red lights received from
1180 opposing sides would light one side in red and the other in blue, adding
1181 the effect of 2 directions applied. In the deluxemapping case, this 2 lights would
1182 neutralize each other making it look like having no direction.
1183 Same thing happens with radiosity. In deluxemapping case the radiosity contribution
1184 is modifying the direction applied from directional lights, making it go closer and closer
1185 to the surface normal the bigger is the amount of radiosity received.
1186 So, for preserving the directional lights contributions, we scale down the radiosity
1187 contribution. It's a hack, but there's a reason behind it */
1189 addDeluxe *= addDeluxeBounceScale;
1190 /* better NOT increase it beyond the original value
1191 if( addDeluxe < 0.00390625f )
1192 addDeluxe = 0.00390625f;
1196 if ( doAddDeluxe ) {
1197 VectorScale( trace->direction, addDeluxe, trace->directionContribution );
1201 trace->testAll = qfalse;
1202 VectorScale( light->color, add, trace->color );
1206 trace->forceSubsampling *= add;
1207 if ( trace->passSolid || trace->opaque ) {
1208 VectorClear( trace->color );
1209 VectorClear( trace->directionContribution );
1214 /* return to sender */
1222 determines the amount of light reaching a sample (luxel or vertex)
1225 void LightingAtSample( trace_t *trace, byte styles[ MAX_LIGHTMAPS ], vec3_t colors[ MAX_LIGHTMAPS ] ){
1230 for ( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
1231 VectorClear( colors[ lightmapNum ] );
1233 /* ydnar: normalmap */
1235 colors[ 0 ][ 0 ] = ( trace->normal[ 0 ] + 1.0f ) * 127.5f;
1236 colors[ 0 ][ 1 ] = ( trace->normal[ 1 ] + 1.0f ) * 127.5f;
1237 colors[ 0 ][ 2 ] = ( trace->normal[ 2 ] + 1.0f ) * 127.5f;
1241 /* ydnar: don't bounce ambient all the time */
1243 VectorCopy( ambientColor, colors[ 0 ] );
1246 /* ydnar: trace to all the list of lights pre-stored in tw */
1247 for ( i = 0; i < trace->numLights && trace->lights[ i ] != NULL; i++ )
1250 trace->light = trace->lights[ i ];
1253 for ( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
1255 if ( styles[ lightmapNum ] == trace->light->style ||
1256 styles[ lightmapNum ] == LS_NONE ) {
1261 /* max of MAX_LIGHTMAPS (4) styles allowed to hit a sample */
1262 if ( lightmapNum >= MAX_LIGHTMAPS ) {
1267 LightContributionToSample( trace );
1268 if ( trace->color[ 0 ] == 0.0f && trace->color[ 1 ] == 0.0f && trace->color[ 2 ] == 0.0f ) {
1272 /* handle negative light */
1273 if ( trace->light->flags & LIGHT_NEGATIVE ) {
1274 VectorScale( trace->color, -1.0f, trace->color );
1278 styles[ lightmapNum ] = trace->light->style;
1281 VectorAdd( colors[ lightmapNum ], trace->color, colors[ lightmapNum ] );
1285 colors[ 0 ][ 0 ] >= 255.0f &&
1286 colors[ 0 ][ 1 ] >= 255.0f &&
1287 colors[ 0 ][ 2 ] >= 255.0f ) {
1296 LightContributionToPoint()
1297 for a given light, how much light/color reaches a given point in space (with no facing)
1298 note: this is similar to LightContributionToSample() but optimized for omnidirectional sampling
1301 int LightContributionToPoint( trace_t *trace ){
1307 light = trace->light;
1310 VectorClear( trace->color );
1312 /* ydnar: early out */
1313 if ( !( light->flags & LIGHT_GRID ) || light->envelope <= 0.0f ) {
1317 /* is this a sun? */
1318 if ( light->type != EMIT_SUN ) {
1325 if ( !ClusterVisible( trace->cluster, light->cluster ) ) {
1330 /* ydnar: check origin against light's pvs envelope */
1331 if ( trace->origin[ 0 ] > light->maxs[ 0 ] || trace->origin[ 0 ] < light->mins[ 0 ] ||
1332 trace->origin[ 1 ] > light->maxs[ 1 ] || trace->origin[ 1 ] < light->mins[ 1 ] ||
1333 trace->origin[ 2 ] > light->maxs[ 2 ] || trace->origin[ 2 ] < light->mins[ 2 ] ) {
1338 /* set light origin */
1339 if ( light->type == EMIT_SUN ) {
1340 VectorAdd( trace->origin, light->origin, trace->end );
1343 VectorCopy( light->origin, trace->end );
1347 dist = SetupTrace( trace );
1350 if ( dist > light->envelope ) {
1351 gridEnvelopeCulled++;
1355 /* ptpff approximation */
1356 if ( light->type == EMIT_AREA && faster ) {
1357 /* clamp the distance to prevent super hot spots */
1358 dist = sqrt( dist * dist + light->extraDist * light->extraDist );
1359 if ( dist < 16.0f ) {
1364 add = light->photons / ( dist * dist );
1367 /* exact point to polygon form factor */
1368 else if ( light->type == EMIT_AREA ) {
1370 vec3_t pushedOrigin;
1373 /* see if the point is behind the light */
1374 d = DotProduct( trace->origin, light->normal ) - light->dist;
1375 if ( !( light->flags & LIGHT_TWOSIDED ) && d < -1.0f ) {
1379 /* nudge the point so that it is clearly forward of the light */
1380 /* so that surfaces meeting a light emiter don't get black edges */
1381 if ( d > -8.0f && d < 8.0f ) {
1382 VectorMA( trace->origin, ( 8.0f - d ), light->normal, pushedOrigin );
1385 VectorCopy( trace->origin, pushedOrigin );
1388 /* calculate the contribution (ydnar 2002-10-21: [bug 642] bad normal calc) */
1389 factor = PointToPolygonFormFactor( pushedOrigin, trace->direction, light->w );
1390 if ( factor == 0.0f ) {
1393 else if ( factor < 0.0f ) {
1394 if ( light->flags & LIGHT_TWOSIDED ) {
1402 /* ydnar: moved to here */
1403 add = factor * light->add;
1406 /* point/spot lights */
1407 else if ( light->type == EMIT_POINT || light->type == EMIT_SPOT ) {
1408 /* clamp the distance to prevent super hot spots */
1409 dist = sqrt( dist * dist + light->extraDist * light->extraDist );
1410 if ( dist < 16.0f ) {
1415 if ( light->flags & LIGHT_ATTEN_LINEAR ) {
1416 add = light->photons * linearScale - ( dist * light->fade );
1422 add = light->photons / ( dist * dist );
1425 /* handle spotlights */
1426 if ( light->type == EMIT_SPOT ) {
1427 float distByNormal, radiusAtDist, sampleRadius;
1428 vec3_t pointAtDist, distToSample;
1431 /* do cone calculation */
1432 distByNormal = -DotProduct( trace->displacement, light->normal );
1433 if ( distByNormal < 0.0f ) {
1436 VectorMA( light->origin, distByNormal, light->normal, pointAtDist );
1437 radiusAtDist = light->radiusByDist * distByNormal;
1438 VectorSubtract( trace->origin, pointAtDist, distToSample );
1439 sampleRadius = VectorLength( distToSample );
1441 /* outside the cone */
1442 if ( sampleRadius >= radiusAtDist ) {
1447 if ( sampleRadius > ( radiusAtDist - 32.0f ) ) {
1448 add *= ( ( radiusAtDist - sampleRadius ) / 32.0f );
1453 /* ydnar: sunlight */
1454 else if ( light->type == EMIT_SUN ) {
1456 add = light->photons;
1457 if ( add <= 0.0f ) {
1462 trace->testAll = qtrue;
1463 VectorScale( light->color, add, trace->color );
1465 /* trace to point */
1466 if ( trace->testOcclusion && !trace->forceSunlight ) {
1469 if ( !( trace->compileFlags & C_SKY ) || trace->opaque ) {
1470 VectorClear( trace->color );
1475 /* return to sender */
1479 /* unknown light type */
1484 /* ydnar: changed to a variable number */
1485 if ( add <= 0.0f || ( add <= light->falloffTolerance && ( light->flags & LIGHT_FAST_ACTUAL ) ) ) {
1490 trace->testAll = qfalse;
1491 VectorScale( light->color, add, trace->color );
1495 if ( trace->passSolid ) {
1496 VectorClear( trace->color );
1500 /* we have a valid sample */
1508 grid samples are for quickly determining the lighting
1509 of dynamically placed entities in the world
1512 #define MAX_CONTRIBUTIONS 32768
1523 void TraceGrid( int num ){
1524 int i, j, x, y, z, mod, numCon, numStyles;
1526 vec3_t baseOrigin, cheapColor, color, thisdir;
1528 bspGridPoint_t *bgp;
1529 contribution_t contributions[ MAX_CONTRIBUTIONS ];
1532 /* get grid points */
1533 gp = &rawGridPoints[ num ];
1534 bgp = &bspGridPoints[ num ];
1536 /* get grid origin */
1538 z = mod / ( gridBounds[ 0 ] * gridBounds[ 1 ] );
1539 mod -= z * ( gridBounds[ 0 ] * gridBounds[ 1 ] );
1540 y = mod / gridBounds[ 0 ];
1541 mod -= y * gridBounds[ 0 ];
1544 trace.origin[ 0 ] = gridMins[ 0 ] + x * gridSize[ 0 ];
1545 trace.origin[ 1 ] = gridMins[ 1 ] + y * gridSize[ 1 ];
1546 trace.origin[ 2 ] = gridMins[ 2 ] + z * gridSize[ 2 ];
1548 /* set inhibit sphere */
1549 if ( gridSize[ 0 ] > gridSize[ 1 ] && gridSize[ 0 ] > gridSize[ 2 ] ) {
1550 trace.inhibitRadius = gridSize[ 0 ] * 0.5f;
1552 else if ( gridSize[ 1 ] > gridSize[ 0 ] && gridSize[ 1 ] > gridSize[ 2 ] ) {
1553 trace.inhibitRadius = gridSize[ 1 ] * 0.5f;
1556 trace.inhibitRadius = gridSize[ 2 ] * 0.5f;
1559 /* find point cluster */
1560 trace.cluster = ClusterForPointExt( trace.origin, GRID_EPSILON );
1561 if ( trace.cluster < 0 ) {
1562 /* try to nudge the origin around to find a valid point */
1563 VectorCopy( trace.origin, baseOrigin );
1564 for ( step = 0; ( step += 0.005 ) <= 1.0; )
1566 VectorCopy( baseOrigin, trace.origin );
1567 trace.origin[ 0 ] += step * ( Random() - 0.5 ) * gridSize[0];
1568 trace.origin[ 1 ] += step * ( Random() - 0.5 ) * gridSize[1];
1569 trace.origin[ 2 ] += step * ( Random() - 0.5 ) * gridSize[2];
1571 /* ydnar: changed to find cluster num */
1572 trace.cluster = ClusterForPointExt( trace.origin, VERTEX_EPSILON );
1573 if ( trace.cluster >= 0 ) {
1578 /* can't find a valid point at all */
1585 trace.testOcclusion = !noTrace;
1586 trace.forceSunlight = qfalse;
1587 trace.recvShadows = WORLDSPAWN_RECV_SHADOWS;
1588 trace.numSurfaces = 0;
1589 trace.surfaces = NULL;
1590 trace.numLights = 0;
1591 trace.lights = NULL;
1595 VectorClear( cheapColor );
1597 /* trace to all the lights, find the major light direction, and divide the
1598 total light between that along the direction and the remaining in the ambient */
1599 for ( trace.light = lights; trace.light != NULL; trace.light = trace.light->next )
1605 if ( !LightContributionToPoint( &trace ) ) {
1609 /* handle negative light */
1610 if ( trace.light->flags & LIGHT_NEGATIVE ) {
1611 VectorScale( trace.color, -1.0f, trace.color );
1614 /* add a contribution */
1615 VectorCopy( trace.color, contributions[ numCon ].color );
1616 VectorCopy( trace.direction, contributions[ numCon ].dir );
1617 VectorClear( contributions[ numCon ].ambient );
1618 contributions[ numCon ].style = trace.light->style;
1621 /* push average direction around */
1622 addSize = VectorLength( trace.color );
1623 VectorMA( gp->dir, addSize, trace.direction, gp->dir );
1625 /* stop after a while */
1626 if ( numCon >= ( MAX_CONTRIBUTIONS - 1 ) ) {
1630 /* ydnar: cheap mode */
1631 VectorAdd( cheapColor, trace.color, cheapColor );
1632 if ( cheapgrid && cheapColor[ 0 ] >= 255.0f && cheapColor[ 1 ] >= 255.0f && cheapColor[ 2 ] >= 255.0f ) {
1637 /////// Floodlighting for point //////////////////
1638 //do our floodlight ambient occlusion loop, and add a single contribution based on the brightest dir
1639 if ( floodlighty ) {
1642 vec3_t dir = { 0, 0, 1 };
1643 float ambientFrac = 0.25f;
1645 trace.testOcclusion = qtrue;
1646 trace.forceSunlight = qfalse;
1647 trace.inhibitRadius = DEFAULT_INHIBIT_RADIUS;
1648 trace.testAll = qtrue;
1650 for ( k = 0; k < 2; k++ )
1652 if ( k == 0 ) { // upper hemisphere
1653 trace.normal[0] = 0;
1654 trace.normal[1] = 0;
1655 trace.normal[2] = 1;
1657 else //lower hemisphere
1659 trace.normal[0] = 0;
1660 trace.normal[1] = 0;
1661 trace.normal[2] = -1;
1664 f = FloodLightForSample( &trace, floodlightDistance, floodlight_lowquality );
1666 /* add a fraction as pure ambient, half as top-down direction */
1667 contributions[ numCon ].color[0] = floodlightRGB[0] * floodlightIntensity * f * ( 1.0f - ambientFrac );
1668 contributions[ numCon ].color[1] = floodlightRGB[1] * floodlightIntensity * f * ( 1.0f - ambientFrac );
1669 contributions[ numCon ].color[2] = floodlightRGB[2] * floodlightIntensity * f * ( 1.0f - ambientFrac );
1671 contributions[ numCon ].ambient[0] = floodlightRGB[0] * floodlightIntensity * f * ambientFrac;
1672 contributions[ numCon ].ambient[1] = floodlightRGB[1] * floodlightIntensity * f * ambientFrac;
1673 contributions[ numCon ].ambient[2] = floodlightRGB[2] * floodlightIntensity * f * ambientFrac;
1675 contributions[ numCon ].dir[0] = dir[0];
1676 contributions[ numCon ].dir[1] = dir[1];
1677 contributions[ numCon ].dir[2] = dir[2];
1679 contributions[ numCon ].style = 0;
1681 /* push average direction around */
1682 addSize = VectorLength( contributions[ numCon ].color );
1683 VectorMA( gp->dir, addSize, dir, gp->dir );
1688 /////////////////////
1690 /* normalize to get primary light direction */
1691 VectorNormalize( gp->dir, thisdir );
1693 /* now that we have identified the primary light direction,
1694 go back and separate all the light into directed and ambient */
1697 for ( i = 0; i < numCon; i++ )
1699 /* get relative directed strength */
1700 d = DotProduct( contributions[ i ].dir, thisdir );
1701 /* we map 1 to gridDirectionality, and 0 to gridAmbientDirectionality */
1702 d = gridAmbientDirectionality + d * ( gridDirectionality - gridAmbientDirectionality );
1707 /* find appropriate style */
1708 for ( j = 0; j < numStyles; j++ )
1710 if ( gp->styles[ j ] == contributions[ i ].style ) {
1715 /* style not found? */
1716 if ( j >= numStyles ) {
1717 /* add a new style */
1718 if ( numStyles < MAX_LIGHTMAPS ) {
1719 gp->styles[ numStyles ] = contributions[ i ].style;
1720 bgp->styles[ numStyles ] = contributions[ i ].style;
1722 //% Sys_Printf( "(%d, %d) ", num, contributions[ i ].style );
1731 /* add the directed color */
1732 VectorMA( gp->directed[ j ], d, contributions[ i ].color, gp->directed[ j ] );
1734 /* ambient light will be at 1/4 the value of directed light */
1735 /* (ydnar: nuke this in favor of more dramatic lighting?) */
1736 /* (PM: how about actually making it work? d=1 when it got here for single lights/sun :P */
1738 /* (Hobbes: always setting it to .25 is hardly any better) */
1739 d = 0.25f * ( 1.0f - d );
1740 VectorMA( gp->ambient[ j ], d, contributions[ i ].color, gp->ambient[ j ] );
1742 VectorAdd( gp->ambient[ j ], contributions[ i ].ambient, gp->ambient[ j ] );
1746 * the total light average = ambient value + 0.25 * sum of all directional values
1747 * we can also get the total light average as 0.25 * the sum of all contributions
1749 * 0.25 * sum(contribution_i) == ambient + 0.25 * sum(d_i contribution_i)
1752 * ambient == 0.25 * sum((1 - d_i) contribution_i)
1754 * So, 0.25f * (1.0f - d) IS RIGHT. If you want to tune it, tune d BEFORE.
1759 /* store off sample */
1760 for ( i = 0; i < MAX_LIGHTMAPS; i++ )
1763 /* do some fudging to keep the ambient from being too low (2003-07-05: 0.25 -> 0.125) */
1765 VectorMA( gp->ambient[ i ], 0.125f, gp->directed[ i ], gp->ambient[ i ] );
1769 /* set minimum light and copy off to bytes */
1770 VectorCopy( gp->ambient[ i ], color );
1771 for ( j = 0; j < 3; j++ )
1772 if ( color[ j ] < minGridLight[ j ] ) {
1773 color[ j ] = minGridLight[ j ];
1776 /* vortex: apply gridscale and gridambientscale here */
1777 ColorToBytes( color, bgp->ambient[ i ], gridScale * gridAmbientScale );
1778 ColorToBytes( gp->directed[ i ], bgp->directed[ i ], gridScale );
1783 //% Sys_FPrintf( SYS_VRB, "%10d %10d %10d ", &gp->ambient[ 0 ][ 0 ], &gp->ambient[ 0 ][ 1 ], &gp->ambient[ 0 ][ 2 ] );
1784 Sys_FPrintf( SYS_VRB, "%9d Amb: (%03.1f %03.1f %03.1f) Dir: (%03.1f %03.1f %03.1f)\n",
1786 gp->ambient[ 0 ][ 0 ], gp->ambient[ 0 ][ 1 ], gp->ambient[ 0 ][ 2 ],
1787 gp->directed[ 0 ][ 0 ], gp->directed[ 0 ][ 1 ], gp->directed[ 0 ][ 2 ] );
1790 /* store direction */
1791 NormalToLatLong( thisdir, bgp->latLong );
1798 calculates the size of the lightgrid and allocates memory
1801 void SetupGrid( void ){
1803 vec3_t maxs, oldGridSize;
1808 /* don't do this if not grid lighting */
1809 if ( noGridLighting ) {
1813 /* ydnar: set grid size */
1814 value = ValueForKey( &entities[ 0 ], "gridsize" );
1815 if ( value[ 0 ] != '\0' ) {
1816 sscanf( value, "%f %f %f", &gridSize[ 0 ], &gridSize[ 1 ], &gridSize[ 2 ] );
1820 VectorCopy( gridSize, oldGridSize );
1821 for ( i = 0; i < 3; i++ )
1822 gridSize[ i ] = gridSize[ i ] >= 8.0f ? floor( gridSize[ i ] ) : 8.0f;
1824 /* ydnar: increase gridSize until grid count is smaller than max allowed */
1825 numRawGridPoints = MAX_MAP_LIGHTGRID + 1;
1827 while ( numRawGridPoints > MAX_MAP_LIGHTGRID )
1829 /* get world bounds */
1830 for ( i = 0; i < 3; i++ )
1832 gridMins[ i ] = gridSize[ i ] * ceil( bspModels[ 0 ].mins[ i ] / gridSize[ i ] );
1833 maxs[ i ] = gridSize[ i ] * floor( bspModels[ 0 ].maxs[ i ] / gridSize[ i ] );
1834 gridBounds[ i ] = ( maxs[ i ] - gridMins[ i ] ) / gridSize[ i ] + 1;
1838 numRawGridPoints = gridBounds[ 0 ] * gridBounds[ 1 ] * gridBounds[ 2 ];
1840 /* increase grid size a bit */
1841 if ( numRawGridPoints > MAX_MAP_LIGHTGRID ) {
1842 gridSize[ j++ % 3 ] += 16.0f;
1847 Sys_Printf( "Grid size = { %1.0f, %1.0f, %1.0f }\n", gridSize[ 0 ], gridSize[ 1 ], gridSize[ 2 ] );
1850 if ( !VectorCompare( gridSize, oldGridSize ) ) {
1851 sprintf( temp, "%.0f %.0f %.0f", gridSize[ 0 ], gridSize[ 1 ], gridSize[ 2 ] );
1852 SetKeyValue( &entities[ 0 ], "gridsize", (const char*) temp );
1853 Sys_FPrintf( SYS_VRB, "Storing adjusted grid size\n" );
1856 /* 2nd variable. fixme: is this silly? */
1857 numBSPGridPoints = numRawGridPoints;
1859 /* allocate lightgrid */
1860 rawGridPoints = safe_malloc( numRawGridPoints * sizeof( *rawGridPoints ) );
1861 memset( rawGridPoints, 0, numRawGridPoints * sizeof( *rawGridPoints ) );
1863 if ( bspGridPoints != NULL ) {
1864 free( bspGridPoints );
1866 bspGridPoints = safe_malloc( numBSPGridPoints * sizeof( *bspGridPoints ) );
1867 memset( bspGridPoints, 0, numBSPGridPoints * sizeof( *bspGridPoints ) );
1869 /* clear lightgrid */
1870 for ( i = 0; i < numRawGridPoints; i++ )
1872 VectorCopy( ambientColor, rawGridPoints[ i ].ambient[ j ] );
1873 rawGridPoints[ i ].styles[ 0 ] = LS_NORMAL;
1874 bspGridPoints[ i ].styles[ 0 ] = LS_NORMAL;
1875 for ( j = 1; j < MAX_LIGHTMAPS; j++ )
1877 rawGridPoints[ i ].styles[ j ] = LS_NONE;
1878 bspGridPoints[ i ].styles[ j ] = LS_NONE;
1883 Sys_Printf( "%9d grid points\n", numRawGridPoints );
1890 does what it says...
1893 void LightWorld( qboolean fastAllocate ){
1897 qboolean minVertex, minGrid;
1901 /* ydnar: smooth normals */
1903 Sys_Printf( "--- SmoothNormals ---\n" );
1907 /* determine the number of grid points */
1908 Sys_Printf( "--- SetupGrid ---\n" );
1911 /* find the optional minimum lighting values */
1912 GetVectorForKey( &entities[ 0 ], "_color", color );
1914 color[0] = Image_LinearFloatFromsRGBFloat( color[0] );
1915 color[1] = Image_LinearFloatFromsRGBFloat( color[1] );
1916 color[2] = Image_LinearFloatFromsRGBFloat( color[2] );
1918 if ( VectorLength( color ) == 0.0f ) {
1919 VectorSet( color, 1.0, 1.0, 1.0 );
1923 f = FloatForKey( &entities[ 0 ], "_ambient" );
1925 f = FloatForKey( &entities[ 0 ], "ambient" );
1927 VectorScale( color, f, ambientColor );
1929 /* minvertexlight */
1931 value = ValueForKey( &entities[ 0 ], "_minvertexlight" );
1932 if ( value[ 0 ] != '\0' ) {
1935 VectorScale( color, f, minVertexLight );
1940 value = ValueForKey( &entities[ 0 ], "_mingridlight" );
1941 if ( value[ 0 ] != '\0' ) {
1944 VectorScale( color, f, minGridLight );
1948 value = ValueForKey( &entities[ 0 ], "_minlight" );
1949 if ( value[ 0 ] != '\0' ) {
1951 VectorScale( color, f, minLight );
1952 if ( minVertex == qfalse ) {
1953 VectorScale( color, f, minVertexLight );
1955 if ( minGrid == qfalse ) {
1956 VectorScale( color, f, minGridLight );
1960 /* create world lights */
1961 Sys_FPrintf( SYS_VRB, "--- CreateLights ---\n" );
1962 CreateEntityLights();
1963 CreateSurfaceLights();
1964 Sys_Printf( "%9d point lights\n", numPointLights );
1965 Sys_Printf( "%9d spotlights\n", numSpotLights );
1966 Sys_Printf( "%9d diffuse (area) lights\n", numDiffuseLights );
1967 Sys_Printf( "%9d sun/sky lights\n", numSunLights );
1969 /* calculate lightgrid */
1970 if ( !noGridLighting ) {
1971 /* ydnar: set up light envelopes */
1972 SetupEnvelopes( qtrue, fastgrid );
1974 Sys_Printf( "--- TraceGrid ---\n" );
1976 RunThreadsOnIndividual( numRawGridPoints, qtrue, TraceGrid );
1978 Sys_Printf( "%d x %d x %d = %d grid\n",
1979 gridBounds[ 0 ], gridBounds[ 1 ], gridBounds[ 2 ], numBSPGridPoints );
1981 /* ydnar: emit statistics on light culling */
1982 Sys_FPrintf( SYS_VRB, "%9d grid points envelope culled\n", gridEnvelopeCulled );
1983 Sys_FPrintf( SYS_VRB, "%9d grid points bounds culled\n", gridBoundsCulled );
1986 /* slight optimization to remove a sqrt */
1987 subdivideThreshold *= subdivideThreshold;
1989 /* map the world luxels */
1990 Sys_Printf( "--- MapRawLightmap ---\n" );
1991 RunThreadsOnIndividual( numRawLightmaps, qtrue, MapRawLightmap );
1992 Sys_Printf( "%9d luxels\n", numLuxels );
1993 Sys_Printf( "%9d luxels mapped\n", numLuxelsMapped );
1994 Sys_Printf( "%9d luxels occluded\n", numLuxelsOccluded );
1998 Sys_Printf( "--- DirtyRawLightmap ---\n" );
1999 RunThreadsOnIndividual( numRawLightmaps, qtrue, DirtyRawLightmap );
2002 /* floodlight pass */
2003 FloodlightRawLightmaps();
2005 /* ydnar: set up light envelopes */
2006 SetupEnvelopes( qfalse, fast );
2008 /* light up my world */
2009 lightsPlaneCulled = 0;
2010 lightsEnvelopeCulled = 0;
2011 lightsBoundsCulled = 0;
2012 lightsClusterCulled = 0;
2014 Sys_Printf( "--- IlluminateRawLightmap ---\n" );
2015 RunThreadsOnIndividual( numRawLightmaps, qtrue, IlluminateRawLightmap );
2016 Sys_Printf( "%9d luxels illuminated\n", numLuxelsIlluminated );
2018 StitchSurfaceLightmaps();
2020 Sys_Printf( "--- IlluminateVertexes ---\n" );
2021 RunThreadsOnIndividual( numBSPDrawSurfaces, qtrue, IlluminateVertexes );
2022 Sys_Printf( "%9d vertexes illuminated\n", numVertsIlluminated );
2024 /* ydnar: emit statistics on light culling */
2025 Sys_FPrintf( SYS_VRB, "%9d lights plane culled\n", lightsPlaneCulled );
2026 Sys_FPrintf( SYS_VRB, "%9d lights envelope culled\n", lightsEnvelopeCulled );
2027 Sys_FPrintf( SYS_VRB, "%9d lights bounds culled\n", lightsBoundsCulled );
2028 Sys_FPrintf( SYS_VRB, "%9d lights cluster culled\n", lightsClusterCulled );
2033 while ( bounce > 0 )
2035 /* store off the bsp between bounces */
2036 StoreSurfaceLightmaps( fastAllocate );
2038 Sys_Printf( "Writing %s\n", source );
2039 WriteBSPFile( source );
2042 Sys_Printf( "\n--- Radiosity (bounce %d of %d) ---\n", b, bt );
2046 VectorClear( ambientColor );
2047 floodlighty = qfalse;
2049 /* generate diffuse lights */
2051 RadCreateDiffuseLights();
2053 /* setup light envelopes */
2054 SetupEnvelopes( qfalse, fastbounce );
2055 if ( numLights == 0 ) {
2056 Sys_Printf( "No diffuse light to calculate, ending radiosity.\n" );
2060 /* add to lightgrid */
2062 gridEnvelopeCulled = 0;
2063 gridBoundsCulled = 0;
2065 Sys_Printf( "--- BounceGrid ---\n" );
2067 RunThreadsOnIndividual( numRawGridPoints, qtrue, TraceGrid );
2069 Sys_FPrintf( SYS_VRB, "%9d grid points envelope culled\n", gridEnvelopeCulled );
2070 Sys_FPrintf( SYS_VRB, "%9d grid points bounds culled\n", gridBoundsCulled );
2073 /* light up my world */
2074 lightsPlaneCulled = 0;
2075 lightsEnvelopeCulled = 0;
2076 lightsBoundsCulled = 0;
2077 lightsClusterCulled = 0;
2079 Sys_Printf( "--- IlluminateRawLightmap ---\n" );
2080 RunThreadsOnIndividual( numRawLightmaps, qtrue, IlluminateRawLightmap );
2081 Sys_Printf( "%9d luxels illuminated\n", numLuxelsIlluminated );
2082 Sys_Printf( "%9d vertexes illuminated\n", numVertsIlluminated );
2084 StitchSurfaceLightmaps();
2086 Sys_Printf( "--- IlluminateVertexes ---\n" );
2087 RunThreadsOnIndividual( numBSPDrawSurfaces, qtrue, IlluminateVertexes );
2088 Sys_Printf( "%9d vertexes illuminated\n", numVertsIlluminated );
2090 /* ydnar: emit statistics on light culling */
2091 Sys_FPrintf( SYS_VRB, "%9d lights plane culled\n", lightsPlaneCulled );
2092 Sys_FPrintf( SYS_VRB, "%9d lights envelope culled\n", lightsEnvelopeCulled );
2093 Sys_FPrintf( SYS_VRB, "%9d lights bounds culled\n", lightsBoundsCulled );
2094 Sys_FPrintf( SYS_VRB, "%9d lights cluster culled\n", lightsClusterCulled );
2106 main routine for light processing
2109 int LightMain( int argc, char **argv ){
2112 char mapSource[ 1024 ];
2114 int lightmapMergeSize = 0;
2115 qboolean lightSamplesInsist = qfalse;
2116 qboolean fastAllocate = qtrue;
2120 Sys_Printf( "--- Light ---\n" );
2121 Sys_Printf( "--- ProcessGameSpecific ---\n" );
2123 /* set standard game flags */
2124 wolfLight = game->wolfLight;
2125 if ( wolfLight == qtrue ) {
2126 Sys_Printf( " lightning model: wolf\n" );
2129 Sys_Printf( " lightning model: quake3\n" );
2132 lmCustomSize = game->lightmapSize;
2133 Sys_Printf( " lightmap size: %d x %d pixels\n", lmCustomSize, lmCustomSize );
2135 lightmapGamma = game->lightmapGamma;
2136 Sys_Printf( " lightning gamma: %f\n", lightmapGamma );
2138 lightmapsRGB = game->lightmapsRGB;
2139 if ( lightmapsRGB ) {
2140 Sys_Printf( " lightmap colorspace: sRGB\n" );
2143 Sys_Printf( " lightmap colorspace: linear\n" );
2146 texturesRGB = game->texturesRGB;
2147 if ( texturesRGB ) {
2148 Sys_Printf( " texture colorspace: sRGB\n" );
2151 Sys_Printf( " texture colorspace: linear\n" );
2154 colorsRGB = game->colorsRGB;
2156 Sys_Printf( " _color colorspace: sRGB\n" );
2159 Sys_Printf( " _color colorspace: linear\n" );
2162 lightmapCompensate = game->lightmapCompensate;
2163 Sys_Printf( " lightning compensation: %f\n", lightmapCompensate );
2165 lightmapExposure = game->lightmapExposure;
2166 Sys_Printf( " lightning exposure: %f\n", lightmapExposure );
2168 gridScale = game->gridScale;
2169 Sys_Printf( " lightgrid scale: %f\n", gridScale );
2171 gridAmbientScale = game->gridAmbientScale;
2172 Sys_Printf( " lightgrid ambient scale: %f\n", gridAmbientScale );
2174 lightAngleHL = game->lightAngleHL;
2175 if ( lightAngleHL ) {
2176 Sys_Printf( " half lambert light angle attenuation enabled \n" );
2179 noStyles = game->noStyles;
2180 if ( noStyles == qtrue ) {
2181 Sys_Printf( " shader lightstyles hack: disabled\n" );
2184 Sys_Printf( " shader lightstyles hack: enabled\n" );
2187 patchShadows = game->patchShadows;
2188 if ( patchShadows == qtrue ) {
2189 Sys_Printf( " patch shadows: enabled\n" );
2192 Sys_Printf( " patch shadows: disabled\n" );
2195 deluxemap = game->deluxeMap;
2196 deluxemode = game->deluxeMode;
2197 if ( deluxemap == qtrue ) {
2199 Sys_Printf( " deluxemapping: enabled with tangentspace deluxemaps\n" );
2202 Sys_Printf( " deluxemapping: enabled with modelspace deluxemaps\n" );
2206 Sys_Printf( " deluxemapping: disabled\n" );
2209 Sys_Printf( "--- ProcessCommandLine ---\n" );
2211 /* process commandline arguments */
2212 for ( i = 1; i < ( argc - 1 ); i++ )
2214 /* lightsource scaling */
2215 if ( !strcmp( argv[ i ], "-point" ) || !strcmp( argv[ i ], "-pointscale" ) ) {
2216 f = atof( argv[ i + 1 ] );
2219 Sys_Printf( "Spherical point (entity) light scaled by %f to %f\n", f, pointScale );
2220 Sys_Printf( "Spot point (entity) light scaled by %f to %f\n", f, spotScale );
2224 else if ( !strcmp( argv[ i ], "-spherical" ) || !strcmp( argv[ i ], "-sphericalscale" ) ) {
2225 f = atof( argv[ i + 1 ] );
2227 Sys_Printf( "Spherical point (entity) light scaled by %f to %f\n", f, pointScale );
2231 else if ( !strcmp( argv[ i ], "-spot" ) || !strcmp( argv[ i ], "-spotscale" ) ) {
2232 f = atof( argv[ i + 1 ] );
2234 Sys_Printf( "Spot point (entity) light scaled by %f to %f\n", f, spotScale );
2238 else if ( !strcmp( argv[ i ], "-area" ) || !strcmp( argv[ i ], "-areascale" ) ) {
2239 f = atof( argv[ i + 1 ] );
2241 Sys_Printf( "Area (shader) light scaled by %f to %f\n", f, areaScale );
2245 else if ( !strcmp( argv[ i ], "-sky" ) || !strcmp( argv[ i ], "-skyscale" ) ) {
2246 f = atof( argv[ i + 1 ] );
2248 Sys_Printf( "Sky/sun light scaled by %f to %f\n", f, skyScale );
2252 else if ( !strcmp( argv[ i ], "-vertexscale" ) ) {
2253 f = atof( argv[ i + 1 ] );
2254 vertexglobalscale *= f;
2255 Sys_Printf( "Vertexlight scaled by %f to %f\n", f, vertexglobalscale );
2259 else if ( !strcmp( argv[ i ], "-nolm" ) ) {
2261 Sys_Printf( "No lightmaps yo\n" );
2264 else if ( !strcmp( argv[ i ], "-bouncecolorratio" ) ) {
2265 f = atof( argv[ i + 1 ] );
2266 bounceColorRatio *= f;
2267 if ( bounceColorRatio > 1 ) {
2268 bounceColorRatio = 1;
2270 if ( bounceColorRatio < 0 ) {
2271 bounceColorRatio = 0;
2273 Sys_Printf( "Bounce color ratio set to %f\n", bounceColorRatio );
2277 else if ( !strcmp( argv[ i ], "-bouncescale" ) ) {
2278 f = atof( argv[ i + 1 ] );
2280 Sys_Printf( "Bounce (radiosity) light scaled by %f to %f\n", f, bounceScale );
2284 else if ( !strcmp( argv[ i ], "-scale" ) ) {
2285 f = atof( argv[ i + 1 ] );
2291 Sys_Printf( "All light scaled by %f\n", f );
2295 else if ( !strcmp( argv[ i ], "-gridscale" ) ) {
2296 f = atof( argv[ i + 1 ] );
2297 Sys_Printf( "Grid lightning scaled by %f\n", f );
2302 else if ( !strcmp( argv[ i ], "-gridambientscale" ) ) {
2303 f = atof( argv[ i + 1 ] );
2304 Sys_Printf( "Grid ambient lightning scaled by %f\n", f );
2305 gridAmbientScale *= f;
2309 else if ( !strcmp( argv[ i ], "-griddirectionality" ) ) {
2310 f = atof( argv[ i + 1 ] );
2314 if ( f < gridAmbientDirectionality ) {
2315 gridAmbientDirectionality = f;
2317 Sys_Printf( "Grid directionality is %f\n", f );
2318 gridDirectionality = f;
2322 else if ( !strcmp( argv[ i ], "-gridambientdirectionality" ) ) {
2323 f = atof( argv[ i + 1 ] );
2327 if ( f > gridDirectionality ) {
2328 gridDirectionality = f;
2330 Sys_Printf( "Grid ambient directionality is %f\n", f );
2331 gridAmbientDirectionality = f;
2335 else if ( !strcmp( argv[ i ], "-gamma" ) ) {
2336 f = atof( argv[ i + 1 ] );
2338 Sys_Printf( "Lighting gamma set to %f\n", lightmapGamma );
2342 else if ( !strcmp( argv[ i ], "-sRGBlight" ) ) {
2343 lightmapsRGB = qtrue;
2344 Sys_Printf( "Lighting is in sRGB\n" );
2347 else if ( !strcmp( argv[ i ], "-nosRGBlight" ) ) {
2348 lightmapsRGB = qfalse;
2349 Sys_Printf( "Lighting is linear\n" );
2352 else if ( !strcmp( argv[ i ], "-sRGBtex" ) ) {
2353 texturesRGB = qtrue;
2354 Sys_Printf( "Textures are in sRGB\n" );
2357 else if ( !strcmp( argv[ i ], "-nosRGBtex" ) ) {
2358 texturesRGB = qfalse;
2359 Sys_Printf( "Textures are linear\n" );
2362 else if ( !strcmp( argv[ i ], "-sRGBcolor" ) ) {
2364 Sys_Printf( "Colors are in sRGB\n" );
2367 else if ( !strcmp( argv[ i ], "-nosRGBcolor" ) ) {
2369 Sys_Printf( "Colors are linear\n" );
2372 else if ( !strcmp( argv[ i ], "-sRGB" ) ) {
2373 lightmapsRGB = qtrue;
2374 Sys_Printf( "Lighting is in sRGB\n" );
2375 texturesRGB = qtrue;
2376 Sys_Printf( "Textures are in sRGB\n" );
2378 Sys_Printf( "Colors are in sRGB\n" );
2381 else if ( !strcmp( argv[ i ], "-nosRGB" ) ) {
2382 lightmapsRGB = qfalse;
2383 Sys_Printf( "Lighting is linear\n" );
2384 texturesRGB = qfalse;
2385 Sys_Printf( "Textures are linear\n" );
2387 Sys_Printf( "Colors are linear\n" );
2390 else if ( !strcmp( argv[ i ], "-exposure" ) ) {
2391 f = atof( argv[ i + 1 ] );
2392 lightmapExposure = f;
2393 Sys_Printf( "Lighting exposure set to %f\n", lightmapExposure );
2397 else if ( !strcmp( argv[ i ], "-compensate" ) ) {
2398 f = atof( argv[ i + 1 ] );
2402 lightmapCompensate = f;
2403 Sys_Printf( "Lighting compensation set to 1/%f\n", lightmapCompensate );
2407 /* Lighting brightness */
2408 else if( !strcmp( argv[ i ], "-brightness" ) ){
2409 f = atof( argv[ i + 1 ] );
2410 lightmapBrightness = f;
2411 Sys_Printf( "Lighting brightness set to %f\n", lightmapBrightness );
2415 /* Lighting contrast */
2416 else if( !strcmp( argv[ i ], "-contrast" ) ){
2417 f = atof( argv[ i + 1 ] );
2418 lightmapContrast = f;
2419 if( lightmapContrast > 255 ){
2420 lightmapContrast = 255;
2422 else if( lightmapContrast < -255 ){
2423 lightmapContrast = -255;
2425 Sys_Printf( "Lighting contrast set to %f\n", lightmapContrast );
2427 /* change to factor in range of 0 to 129.5 */
2428 lightmapContrast = ( 259 * ( lightmapContrast + 255 ) ) / ( 255 * ( 259 - lightmapContrast ) );
2431 /* ydnar switches */
2432 else if ( !strcmp( argv[ i ], "-bounce" ) ) {
2433 bounce = atoi( argv[ i + 1 ] );
2437 else if ( bounce > 0 ) {
2438 Sys_Printf( "Radiosity enabled with %d bounce(s)\n", bounce );
2443 else if ( !strcmp( argv[ i ], "-supersample" ) || !strcmp( argv[ i ], "-super" ) ) {
2444 superSample = atoi( argv[ i + 1 ] );
2445 if ( superSample < 1 ) {
2448 else if ( superSample > 1 ) {
2449 Sys_Printf( "Ordered-grid supersampling enabled with %d sample(s) per lightmap texel\n", ( superSample * superSample ) );
2454 else if ( !strcmp( argv[ i ], "-randomsamples" ) ) {
2455 lightRandomSamples = qtrue;
2456 Sys_Printf( "Random sampling enabled\n", lightRandomSamples );
2459 else if ( !strcmp( argv[ i ], "-samples" ) ) {
2460 if ( *argv[i + 1] == '+' ) {
2461 lightSamplesInsist = qtrue;
2464 lightSamplesInsist = qfalse;
2466 lightSamples = atoi( argv[ i + 1 ] );
2467 if ( lightSamples < 1 ) {
2470 else if ( lightSamples > 1 ) {
2471 Sys_Printf( "Adaptive supersampling enabled with %d sample(s) per lightmap texel\n", lightSamples );
2476 else if ( !strcmp( argv[ i ], "-samplessearchboxsize" ) ) {
2477 lightSamplesSearchBoxSize = atoi( argv[ i + 1 ] );
2478 if ( lightSamplesSearchBoxSize <= 0 ) {
2479 lightSamplesSearchBoxSize = 1;
2481 if ( lightSamplesSearchBoxSize > 4 ) {
2482 lightSamplesSearchBoxSize = 4; /* more makes no sense */
2484 else if ( lightSamplesSearchBoxSize != 1 ) {
2485 Sys_Printf( "Adaptive supersampling uses %f times the normal search box size\n", lightSamplesSearchBoxSize );
2490 else if ( !strcmp( argv[ i ], "-filter" ) ) {
2492 Sys_Printf( "Lightmap filtering enabled\n" );
2495 else if ( !strcmp( argv[ i ], "-dark" ) ) {
2497 Sys_Printf( "Dark lightmap seams enabled\n" );
2500 else if ( !strcmp( argv[ i ], "-shadeangle" ) ) {
2501 shadeAngleDegrees = atof( argv[ i + 1 ] );
2502 if ( shadeAngleDegrees < 0.0f ) {
2503 shadeAngleDegrees = 0.0f;
2505 else if ( shadeAngleDegrees > 0.0f ) {
2507 Sys_Printf( "Phong shading enabled with a breaking angle of %f degrees\n", shadeAngleDegrees );
2512 else if ( !strcmp( argv[ i ], "-thresh" ) ) {
2513 subdivideThreshold = atof( argv[ i + 1 ] );
2514 if ( subdivideThreshold < 0 ) {
2515 subdivideThreshold = DEFAULT_SUBDIVIDE_THRESHOLD;
2518 Sys_Printf( "Subdivision threshold set at %.3f\n", subdivideThreshold );
2523 else if ( !strcmp( argv[ i ], "-approx" ) ) {
2524 approximateTolerance = atoi( argv[ i + 1 ] );
2525 if ( approximateTolerance < 0 ) {
2526 approximateTolerance = 0;
2528 else if ( approximateTolerance > 0 ) {
2529 Sys_Printf( "Approximating lightmaps within a byte tolerance of %d\n", approximateTolerance );
2533 else if ( !strcmp( argv[ i ], "-deluxe" ) || !strcmp( argv[ i ], "-deluxemap" ) ) {
2535 Sys_Printf( "Generating deluxemaps for average light direction\n" );
2537 else if ( !strcmp( argv[ i ], "-deluxemode" ) ) {
2538 deluxemode = atoi( argv[ i + 1 ] );
2539 if ( deluxemode == 0 || deluxemode > 1 || deluxemode < 0 ) {
2540 Sys_Printf( "Generating modelspace deluxemaps\n" );
2544 Sys_Printf( "Generating tangentspace deluxemaps\n" );
2548 else if ( !strcmp( argv[ i ], "-nodeluxe" ) || !strcmp( argv[ i ], "-nodeluxemap" ) ) {
2550 Sys_Printf( "Disabling generating of deluxemaps for average light direction\n" );
2552 else if ( !strcmp( argv[ i ], "-external" ) ) {
2553 externalLightmaps = qtrue;
2554 Sys_Printf( "Storing all lightmaps externally\n" );
2557 else if ( !strcmp( argv[ i ], "-lightmapsize" ) ) {
2558 lmCustomSize = atoi( argv[ i + 1 ] );
2560 /* must be a power of 2 and greater than 2 */
2561 if ( ( ( lmCustomSize - 1 ) & lmCustomSize ) || lmCustomSize < 2 ) {
2562 Sys_Printf( "WARNING: Lightmap size must be a power of 2, greater or equal to 2 pixels.\n" );
2563 lmCustomSize = game->lightmapSize;
2566 Sys_Printf( "Default lightmap size set to %d x %d pixels\n", lmCustomSize, lmCustomSize );
2568 /* enable external lightmaps */
2569 if ( lmCustomSize != game->lightmapSize ) {
2570 externalLightmaps = qtrue;
2571 Sys_Printf( "Storing all lightmaps externally\n" );
2575 else if ( !strcmp( argv[ i ], "-rawlightmapsizelimit" ) ) {
2576 lmLimitSize = atoi( argv[ i + 1 ] );
2579 Sys_Printf( "Raw lightmap size limit set to %d x %d pixels\n", lmLimitSize, lmLimitSize );
2582 else if ( !strcmp( argv[ i ], "-lightmapdir" ) ) {
2583 lmCustomDir = argv[i + 1];
2585 Sys_Printf( "Lightmap directory set to %s\n", lmCustomDir );
2586 externalLightmaps = qtrue;
2587 Sys_Printf( "Storing all lightmaps externally\n" );
2590 /* ydnar: add this to suppress warnings */
2591 else if ( !strcmp( argv[ i ], "-custinfoparms" ) ) {
2592 Sys_Printf( "Custom info parms enabled\n" );
2593 useCustomInfoParms = qtrue;
2596 else if ( !strcmp( argv[ i ], "-wolf" ) ) {
2597 /* -game should already be set */
2599 Sys_Printf( "Enabling Wolf lighting model (linear default)\n" );
2602 else if ( !strcmp( argv[ i ], "-q3" ) ) {
2603 /* -game should already be set */
2605 Sys_Printf( "Enabling Quake 3 lighting model (nonlinear default)\n" );
2608 else if ( !strcmp( argv[ i ], "-extradist" ) ) {
2609 extraDist = atof( argv[ i + 1 ] );
2610 if ( extraDist < 0 ) {
2614 Sys_Printf( "Default extra radius set to %f units\n", extraDist );
2617 else if ( !strcmp( argv[ i ], "-sunonly" ) ) {
2619 Sys_Printf( "Only computing sunlight\n" );
2622 else if ( !strcmp( argv[ i ], "-bounceonly" ) ) {
2624 Sys_Printf( "Storing bounced light (radiosity) only\n" );
2627 else if ( !strcmp( argv[ i ], "-nocollapse" ) ) {
2629 Sys_Printf( "Identical lightmap collapsing disabled\n" );
2632 else if ( !strcmp( argv[ i ], "-nolightmapsearch" ) ) {
2633 lightmapSearchBlockSize = 1;
2634 Sys_Printf( "No lightmap searching - all lightmaps will be sequential\n" );
2637 else if ( !strcmp( argv[ i ], "-lightmapsearchpower" ) ) {
2638 lightmapMergeSize = ( game->lightmapSize << atoi( argv[i + 1] ) );
2640 Sys_Printf( "Restricted lightmap searching enabled - optimize for lightmap merge power %d (size %d)\n", atoi( argv[i] ), lightmapMergeSize );
2643 else if ( !strcmp( argv[ i ], "-lightmapsearchblocksize" ) ) {
2644 lightmapSearchBlockSize = atoi( argv[i + 1] );
2646 Sys_Printf( "Restricted lightmap searching enabled - block size set to %d\n", lightmapSearchBlockSize );
2649 else if ( !strcmp( argv[ i ], "-shade" ) ) {
2651 Sys_Printf( "Phong shading enabled\n" );
2654 else if ( !strcmp( argv[ i ], "-bouncegrid" ) ) {
2657 Sys_Printf( "Grid lighting with radiosity enabled\n" );
2661 else if ( !strcmp( argv[ i ], "-smooth" ) ) {
2662 lightSamples = EXTRA_SCALE;
2663 Sys_Printf( "The -smooth argument is deprecated, use \"-samples 2\" instead\n" );
2666 else if ( !strcmp( argv[ i ], "-nofastpoint" ) ) {
2668 Sys_Printf( "Automatic fast mode for point lights disabled\n" );
2671 else if ( !strcmp( argv[ i ], "-fast" ) ) {
2675 Sys_Printf( "Fast mode enabled for all area lights\n" );
2678 else if ( !strcmp( argv[ i ], "-faster" ) ) {
2683 Sys_Printf( "Faster mode enabled\n" );
2686 // else if ( !strcmp( argv[ i ], "-fastallocate" ) ) {
2687 // fastAllocate = qtrue;
2688 // Sys_Printf( "Fast allocation mode enabled\n" );
2690 else if ( !strcmp( argv[ i ], "-slowallocate" ) ) {
2691 fastAllocate = qfalse;
2692 Sys_Printf( "Slow allocation mode enabled\n" );
2695 else if ( !strcmp( argv[ i ], "-fastgrid" ) ) {
2697 Sys_Printf( "Fast grid lighting enabled\n" );
2700 else if ( !strcmp( argv[ i ], "-fastbounce" ) ) {
2702 Sys_Printf( "Fast bounce mode enabled\n" );
2705 else if ( !strcmp( argv[ i ], "-cheap" ) ) {
2708 Sys_Printf( "Cheap mode enabled\n" );
2711 else if ( !strcmp( argv[ i ], "-cheapgrid" ) ) {
2713 Sys_Printf( "Cheap grid mode enabled\n" );
2716 else if ( !strcmp( argv[ i ], "-normalmap" ) ) {
2718 Sys_Printf( "Storing normal map instead of lightmap\n" );
2721 else if ( !strcmp( argv[ i ], "-trisoup" ) ) {
2723 Sys_Printf( "Converting brush faces to triangle soup\n" );
2726 else if ( !strcmp( argv[ i ], "-debug" ) ) {
2728 Sys_Printf( "Lightmap debugging enabled\n" );
2731 else if ( !strcmp( argv[ i ], "-debugsurfaces" ) || !strcmp( argv[ i ], "-debugsurface" ) ) {
2732 debugSurfaces = qtrue;
2733 Sys_Printf( "Lightmap surface debugging enabled\n" );
2736 else if ( !strcmp( argv[ i ], "-debugunused" ) ) {
2737 debugUnused = qtrue;
2738 Sys_Printf( "Unused luxel debugging enabled\n" );
2741 else if ( !strcmp( argv[ i ], "-debugaxis" ) ) {
2743 Sys_Printf( "Lightmap axis debugging enabled\n" );
2746 else if ( !strcmp( argv[ i ], "-debugcluster" ) ) {
2747 debugCluster = qtrue;
2748 Sys_Printf( "Luxel cluster debugging enabled\n" );
2751 else if ( !strcmp( argv[ i ], "-debugorigin" ) ) {
2752 debugOrigin = qtrue;
2753 Sys_Printf( "Luxel origin debugging enabled\n" );
2756 else if ( !strcmp( argv[ i ], "-debugdeluxe" ) ) {
2758 debugDeluxemap = qtrue;
2759 Sys_Printf( "Deluxemap debugging enabled\n" );
2762 else if ( !strcmp( argv[ i ], "-export" ) ) {
2763 exportLightmaps = qtrue;
2764 Sys_Printf( "Exporting lightmaps\n" );
2767 else if ( !strcmp( argv[ i ], "-notrace" ) ) {
2769 Sys_Printf( "Shadow occlusion disabled\n" );
2771 else if ( !strcmp( argv[ i ], "-patchshadows" ) ) {
2772 patchShadows = qtrue;
2773 Sys_Printf( "Patch shadow casting enabled\n" );
2775 else if ( !strcmp( argv[ i ], "-extra" ) ) {
2776 superSample = EXTRA_SCALE; /* ydnar */
2777 Sys_Printf( "The -extra argument is deprecated, use \"-super 2\" instead\n" );
2779 else if ( !strcmp( argv[ i ], "-extrawide" ) ) {
2780 superSample = EXTRAWIDE_SCALE; /* ydnar */
2781 filter = qtrue; /* ydnar */
2782 Sys_Printf( "The -extrawide argument is deprecated, use \"-filter [-super 2]\" instead\n" );
2784 else if ( !strcmp( argv[ i ], "-samplesize" ) ) {
2785 sampleSize = atoi( argv[ i + 1 ] );
2786 if ( sampleSize < 1 ) {
2790 Sys_Printf( "Default lightmap sample size set to %dx%d units\n", sampleSize, sampleSize );
2792 else if ( !strcmp( argv[ i ], "-minsamplesize" ) ) {
2793 minSampleSize = atoi( argv[ i + 1 ] );
2794 if ( minSampleSize < 1 ) {
2798 Sys_Printf( "Minimum lightmap sample size set to %dx%d units\n", minSampleSize, minSampleSize );
2800 else if ( !strcmp( argv[ i ], "-samplescale" ) ) {
2801 sampleScale = atoi( argv[ i + 1 ] );
2803 Sys_Printf( "Lightmaps sample scale set to %d\n", sampleScale );
2805 else if ( !strcmp( argv[ i ], "-debugsamplesize" ) ) {
2806 debugSampleSize = 1;
2807 Sys_Printf( "debugging Lightmaps SampleSize\n" );
2809 else if ( !strcmp( argv[ i ], "-novertex" ) ) {
2810 noVertexLighting = 1;
2811 if ( ( atof( argv[ i + 1 ] ) != 0 ) && ( atof( argv[ i + 1 ] )) < 1 ) {
2812 noVertexLighting = ( atof( argv[ i + 1 ] ) );
2814 Sys_Printf( "Setting vertex lighting globally to %f\n", noVertexLighting );
2817 Sys_Printf( "Disabling vertex lighting\n" );
2820 else if ( !strcmp( argv[ i ], "-nogrid" ) ) {
2821 noGridLighting = qtrue;
2822 Sys_Printf( "Disabling grid lighting\n" );
2824 else if ( !strcmp( argv[ i ], "-border" ) ) {
2825 lightmapBorder = qtrue;
2826 Sys_Printf( "Adding debug border to lightmaps\n" );
2828 else if ( !strcmp( argv[ i ], "-nosurf" ) ) {
2830 Sys_Printf( "Not tracing against surfaces\n" );
2832 else if ( !strcmp( argv[ i ], "-dump" ) ) {
2834 Sys_Printf( "Dumping radiosity lights into numbered prefabs\n" );
2836 else if ( !strcmp( argv[ i ], "-lomem" ) ) {
2838 Sys_Printf( "Enabling low-memory (potentially slower) lighting mode\n" );
2840 else if ( !strcmp( argv[ i ], "-lightanglehl" ) ) {
2841 if ( ( atoi( argv[ i + 1 ] ) != 0 ) != lightAngleHL ) {
2842 lightAngleHL = ( atoi( argv[ i + 1 ] ) != 0 );
2843 if ( lightAngleHL ) {
2844 Sys_Printf( "Enabling half lambert light angle attenuation\n" );
2847 Sys_Printf( "Disabling half lambert light angle attenuation\n" );
2852 else if ( !strcmp( argv[ i ], "-nostyle" ) || !strcmp( argv[ i ], "-nostyles" ) ) {
2854 Sys_Printf( "Disabling lightstyles\n" );
2856 else if ( !strcmp( argv[ i ], "-style" ) || !strcmp( argv[ i ], "-styles" ) ) {
2858 Sys_Printf( "Enabling lightstyles\n" );
2860 else if ( !strcmp( argv[ i ], "-cpma" ) ) {
2862 Sys_Printf( "Enabling Challenge Pro Mode Asstacular Vertex Lighting Mode (tm)\n" );
2864 else if ( !strcmp( argv[ i ], "-floodlight" ) ) {
2865 floodlighty = qtrue;
2866 Sys_Printf( "FloodLighting enabled\n" );
2868 else if ( !strcmp( argv[ i ], "-debugnormals" ) ) {
2869 debugnormals = qtrue;
2870 Sys_Printf( "DebugNormals enabled\n" );
2872 else if ( !strcmp( argv[ i ], "-lowquality" ) ) {
2873 floodlight_lowquality = qtrue;
2874 Sys_Printf( "Low Quality FloodLighting enabled\n" );
2877 /* r7: dirtmapping */
2878 else if ( !strcmp( argv[ i ], "-dirty" ) ) {
2880 Sys_Printf( "Dirtmapping enabled\n" );
2882 else if ( !strcmp( argv[ i ], "-dirtdebug" ) || !strcmp( argv[ i ], "-debugdirt" ) ) {
2884 Sys_Printf( "Dirtmap debugging enabled\n" );
2886 else if ( !strcmp( argv[ i ], "-dirtmode" ) ) {
2887 dirtMode = atoi( argv[ i + 1 ] );
2888 if ( dirtMode != 0 && dirtMode != 1 ) {
2891 if ( dirtMode == 1 ) {
2892 Sys_Printf( "Enabling randomized dirtmapping\n" );
2895 Sys_Printf( "Enabling ordered dirtmapping\n" );
2899 else if ( !strcmp( argv[ i ], "-dirtdepth" ) ) {
2900 dirtDepth = atof( argv[ i + 1 ] );
2901 if ( dirtDepth <= 0.0f ) {
2904 Sys_Printf( "Dirtmapping depth set to %.1f\n", dirtDepth );
2907 else if ( !strcmp( argv[ i ], "-dirtscale" ) ) {
2908 dirtScale = atof( argv[ i + 1 ] );
2909 if ( dirtScale <= 0.0f ) {
2912 Sys_Printf( "Dirtmapping scale set to %.1f\n", dirtScale );
2915 else if ( !strcmp( argv[ i ], "-dirtgain" ) ) {
2916 dirtGain = atof( argv[ i + 1 ] );
2917 if ( dirtGain <= 0.0f ) {
2920 Sys_Printf( "Dirtmapping gain set to %.1f\n", dirtGain );
2923 else if ( !strcmp( argv[ i ], "-trianglecheck" ) ) {
2924 lightmapTriangleCheck = qtrue;
2926 else if ( !strcmp( argv[ i ], "-extravisnudge" ) ) {
2927 lightmapExtraVisClusterNudge = qtrue;
2929 else if ( !strcmp( argv[ i ], "-fill" ) ) {
2930 lightmapFill = qtrue;
2931 Sys_Printf( "Filling lightmap colors from surrounding pixels to improve JPEG compression\n" );
2933 /* unhandled args */
2936 Sys_Printf( "WARNING: Unknown argument \"%s\"\n", argv[ i ] );
2941 /* fix up falloff tolerance for sRGB */
2942 if ( lightmapsRGB ) {
2943 falloffTolerance = Image_LinearFloatFromsRGBFloat( falloffTolerance * ( 1.0 / 255.0 ) ) * 255.0;
2946 /* fix up samples count */
2947 if ( lightRandomSamples ) {
2948 if ( !lightSamplesInsist ) {
2949 /* approximately match -samples in quality */
2950 switch ( lightSamples )
2956 Sys_Printf( "Adaptive supersampling preset enabled with %d random sample(s) per lightmap texel\n", lightSamples );
2962 Sys_Printf( "Adaptive supersampling preset enabled with %d random sample(s) per lightmap texel\n", lightSamples );
2968 Sys_Printf( "Adaptive supersampling preset enabled with %d random sample(s) per lightmap texel\n", lightSamples );
2976 /* fix up lightmap search power */
2977 if ( lightmapMergeSize ) {
2978 lightmapSearchBlockSize = ( lightmapMergeSize / lmCustomSize ) * ( lightmapMergeSize / lmCustomSize );
2979 if ( lightmapSearchBlockSize < 1 ) {
2980 lightmapSearchBlockSize = 1;
2983 Sys_Printf( "Restricted lightmap searching enabled - block size adjusted to %d\n", lightmapSearchBlockSize );
2986 /* clean up map name */
2987 strcpy( source, ExpandArg( argv[ i ] ) );
2988 StripExtension( source );
2989 DefaultExtension( source, ".bsp" );
2990 strcpy( mapSource, ExpandArg( argv[ i ] ) );
2991 StripExtension( mapSource );
2992 DefaultExtension( mapSource, ".map" );
2994 /* ydnar: set default sample size */
2995 SetDefaultSampleSize( sampleSize );
2997 /* ydnar: handle shaders */
2998 BeginMapShaderFile( source );
3002 Sys_Printf( "Loading %s\n", source );
3004 /* ydnar: load surface file */
3005 LoadSurfaceExtraFile( source );
3008 LoadBSPFile( source );
3010 /* parse bsp entities */
3013 /* inject command line parameters */
3014 InjectCommandLine( argv, 0, argc - 1 );
3017 value = ValueForKey( &entities[ 0 ], "_keepLights" );
3018 if ( value[ 0 ] != '1' ) {
3019 LoadMapFile( mapSource, qtrue, qfalse );
3022 /* set the entity/model origins and init yDrawVerts */
3025 /* ydnar: set up optimization */
3029 SetupSurfaceLightmaps();
3031 /* initialize the surface facet tracing */
3034 /* light the world */
3035 LightWorld( fastAllocate );
3037 /* ydnar: store off lightmaps */
3038 StoreSurfaceLightmaps( fastAllocate );
3040 /* write out the bsp */
3042 Sys_Printf( "Writing %s\n", source );
3043 WriteBSPFile( source );
3045 /* ydnar: export lightmaps */
3046 if ( exportLightmaps && !externalLightmaps ) {
3050 /* return to sender */