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_malloc0( sizeof( *light ) );
111 light->next = lights;
114 /* initialize the light */
115 light->flags = LIGHT_SUN_DEFAULT;
116 light->type = EMIT_SUN;
118 light->falloffTolerance = falloffTolerance;
119 light->filterRadius = sun->filterRadius / sun->numSamples;
120 light->style = noStyles ? LS_NORMAL : sun->style;
122 /* set the light's position out to infinity */
123 VectorMA( vec3_origin, ( MAX_WORLD_COORD * 8.0f ), direction, light->origin ); /* MAX_WORLD_COORD * 2.0f */
125 /* set the facing to be the inverse of the sun direction */
126 VectorScale( direction, -1.0, light->normal );
127 light->dist = DotProduct( light->origin, light->normal );
129 /* set color and photons */
130 VectorCopy( sun->color, light->color );
131 light->photons = photons * skyScale;
135 if ( sun->next != NULL ) {
136 CreateSunLight( sun->next );
143 CreateSkyLights() - ydnar
144 simulates sky light with multiple suns
147 static void CreateSkyLights( vec3_t color, float value, int iterations, float filterRadius, int style ){
149 int angleSteps, elevationSteps;
150 float angle, elevation;
151 float angleStep, elevationStep;
156 if ( value <= 0.0f || iterations < 2 ) {
160 /* basic sun setup */
161 VectorCopy( color, sun.color );
163 sun.filterRadius = filterRadius;
165 sun.style = noStyles ? LS_NORMAL : style;
169 elevationSteps = iterations - 1;
170 angleSteps = elevationSteps * 4;
172 elevationStep = DEG2RAD( 90.0f / iterations ); /* skip elevation 0 */
173 angleStep = DEG2RAD( 360.0f / angleSteps );
175 /* calc individual sun brightness */
176 numSuns = angleSteps * elevationSteps + 1;
177 sun.photons = value / numSuns;
179 /* iterate elevation */
180 elevation = elevationStep * 0.5f;
182 for ( i = 0, elevation = elevationStep * 0.5f; i < elevationSteps; i++ )
185 for ( j = 0; j < angleSteps; j++ )
188 sun.direction[ 0 ] = cos( angle ) * cos( elevation );
189 sun.direction[ 1 ] = sin( angle ) * cos( elevation );
190 sun.direction[ 2 ] = sin( elevation );
191 CreateSunLight( &sun );
198 elevation += elevationStep;
199 angle += angleStep / elevationSteps;
202 /* create vertical sun */
203 VectorSet( sun.direction, 0.0f, 0.0f, 1.0f );
204 CreateSunLight( &sun );
214 creates lights from light entities
217 void CreateEntityLights( void ){
219 light_t *light, *light2;
225 float intensity, scale, deviance, filterRadius;
226 int spawnflags, flags, numSamples;
230 /* go throught entity list and find lights */
231 for ( i = 0; i < numEntities; i++ )
235 name = ValueForKey( e, "classname" );
237 /* ydnar: check for lightJunior */
238 if ( Q_strncasecmp( name, "lightJunior", 11 ) == 0 ) {
241 else if ( Q_strncasecmp( name, "light", 5 ) == 0 ) {
248 /* lights with target names (and therefore styles) are only parsed from BSP */
249 target = ValueForKey( e, "targetname" );
250 if ( target[ 0 ] != '\0' && i >= numBSPEntities ) {
256 light = safe_malloc0( sizeof( *light ) );
257 light->next = lights;
260 /* handle spawnflags */
261 spawnflags = IntForKey( e, "spawnflags" );
263 /* ydnar: quake 3+ light behavior */
264 if ( wolfLight == qfalse ) {
265 /* set default flags */
266 flags = LIGHT_Q3A_DEFAULT;
268 /* linear attenuation? */
269 if ( spawnflags & 1 ) {
270 flags |= LIGHT_ATTEN_LINEAR;
271 flags &= ~LIGHT_ATTEN_ANGLE;
274 /* no angle attenuate? */
275 if ( spawnflags & 2 ) {
276 flags &= ~LIGHT_ATTEN_ANGLE;
280 /* ydnar: wolf light behavior */
283 /* set default flags */
284 flags = LIGHT_WOLF_DEFAULT;
286 /* inverse distance squared attenuation? */
287 if ( spawnflags & 1 ) {
288 flags &= ~LIGHT_ATTEN_LINEAR;
289 flags |= LIGHT_ATTEN_ANGLE;
292 /* angle attenuate? */
293 if ( spawnflags & 2 ) {
294 flags |= LIGHT_ATTEN_ANGLE;
298 /* other flags (borrowed from wolf) */
300 /* wolf dark light? */
301 if ( ( spawnflags & 4 ) || ( spawnflags & 8 ) ) {
306 if ( spawnflags & 16 ) {
307 flags &= ~LIGHT_GRID;
313 flags &= ~LIGHT_SURFACES;
316 /* vortex: unnormalized? */
317 if ( spawnflags & 32 ) {
318 flags |= LIGHT_UNNORMALIZED;
321 /* vortex: distance atten? */
322 if ( spawnflags & 64 ) {
323 flags |= LIGHT_ATTEN_DISTANCE;
326 /* store the flags */
327 light->flags = flags;
329 /* ydnar: set fade key (from wolf) */
331 if ( light->flags & LIGHT_ATTEN_LINEAR ) {
332 light->fade = FloatForKey( e, "fade" );
333 if ( light->fade == 0.0f ) {
338 /* ydnar: set angle scaling (from vlight) */
339 light->angleScale = FloatForKey( e, "_anglescale" );
340 if ( light->angleScale != 0.0f ) {
341 light->flags |= LIGHT_ATTEN_ANGLE;
345 GetVectorForKey( e, "origin", light->origin );
346 light->style = IntForKey( e, "_style" );
347 if ( light->style == LS_NORMAL ) {
348 light->style = IntForKey( e, "style" );
350 if ( light->style < LS_NORMAL || light->style >= LS_NONE ) {
351 Error( "Invalid lightstyle (%d) on entity %d", light->style, i );
354 if ( light->style != LS_NORMAL ) {
355 Sys_FPrintf( SYS_WRN, "WARNING: Styled light found targeting %s\n **", target );
358 /* set light intensity */
359 intensity = FloatForKey( e, "_light" );
360 if ( intensity == 0.0f ) {
361 intensity = FloatForKey( e, "light" );
363 if ( intensity == 0.0f ) {
367 /* ydnar: set light scale (sof2) */
368 scale = FloatForKey( e, "scale" );
369 if ( scale == 0.0f ) {
374 /* ydnar: get deviance and samples */
375 deviance = FloatForKey( e, "_deviance" );
376 if ( deviance == 0.0f ) {
377 deviance = FloatForKey( e, "_deviation" );
379 if ( deviance == 0.0f ) {
380 deviance = FloatForKey( e, "_jitter" );
382 numSamples = IntForKey( e, "_samples" );
383 if ( deviance < 0.0f || numSamples < 1 ) {
387 intensity /= numSamples;
389 /* ydnar: get filter radius */
390 filterRadius = FloatForKey( e, "_filterradius" );
391 if ( filterRadius == 0.0f ) {
392 filterRadius = FloatForKey( e, "_filteradius" );
394 if ( filterRadius == 0.0f ) {
395 filterRadius = FloatForKey( e, "_filter" );
397 if ( filterRadius < 0.0f ) {
400 light->filterRadius = filterRadius;
402 /* set light color */
403 _color = ValueForKey( e, "_color" );
404 if ( _color && _color[ 0 ] ) {
405 sscanf( _color, "%f %f %f", &light->color[ 0 ], &light->color[ 1 ], &light->color[ 2 ] );
407 light->color[0] = Image_LinearFloatFromsRGBFloat( light->color[0] );
408 light->color[1] = Image_LinearFloatFromsRGBFloat( light->color[1] );
409 light->color[2] = Image_LinearFloatFromsRGBFloat( light->color[2] );
411 if ( !( light->flags & LIGHT_UNNORMALIZED ) ) {
412 ColorNormalize( light->color, light->color );
416 light->color[ 0 ] = light->color[ 1 ] = light->color[ 2 ] = 1.0f;
419 light->extraDist = FloatForKey( e, "_extradist" );
420 if ( light->extraDist == 0.0f ) {
421 light->extraDist = extraDist;
424 light->photons = intensity;
426 light->type = EMIT_POINT;
428 /* set falloff threshold */
429 light->falloffTolerance = falloffTolerance / numSamples;
431 /* lights with a target will be spotlights */
432 target = ValueForKey( e, "target" );
441 e2 = FindTargetEntity( target );
443 Sys_FPrintf( SYS_WRN, "WARNING: light at (%i %i %i) has missing target\n",
444 (int) light->origin[ 0 ], (int) light->origin[ 1 ], (int) light->origin[ 2 ] );
445 light->photons *= pointScale;
449 /* not a point light */
453 /* make a spotlight */
454 GetVectorForKey( e2, "origin", dest );
455 VectorSubtract( dest, light->origin, light->normal );
456 dist = VectorNormalize( light->normal, light->normal );
457 radius = FloatForKey( e, "radius" );
464 light->radiusByDist = ( radius + 16 ) / dist;
465 light->type = EMIT_SPOT;
467 /* ydnar: wolf mods: spotlights always use nonlinear + angle attenuation */
468 light->flags &= ~LIGHT_ATTEN_LINEAR;
469 light->flags |= LIGHT_ATTEN_ANGLE;
472 /* ydnar: is this a sun? */
473 _sun = ValueForKey( e, "_sun" );
474 if ( _sun[ 0 ] == '1' ) {
475 /* not a spot light */
478 /* unlink this light */
479 lights = light->next;
482 VectorScale( light->normal, -1.0f, sun.direction );
483 VectorCopy( light->color, sun.color );
484 sun.photons = intensity;
485 sun.deviance = deviance / 180.0f * Q_PI;
486 sun.numSamples = numSamples;
487 sun.style = noStyles ? LS_NORMAL : light->style;
490 /* make a sun light */
491 CreateSunLight( &sun );
493 /* free original light */
497 /* skip the rest of this love story */
502 light->photons *= spotScale;
507 light->photons *= pointScale;
510 /* jitter the light */
511 for ( j = 1; j < numSamples; j++ )
514 light2 = safe_malloc( sizeof( *light ) );
515 memcpy( light2, light, sizeof( *light ) );
516 light2->next = lights;
520 if ( light->type == EMIT_SPOT ) {
528 light2->origin[ 0 ] = light->origin[ 0 ] + ( Random() * 2.0f - 1.0f ) * deviance;
529 light2->origin[ 1 ] = light->origin[ 1 ] + ( Random() * 2.0f - 1.0f ) * deviance;
530 light2->origin[ 2 ] = light->origin[ 2 ] + ( Random() * 2.0f - 1.0f ) * deviance;
538 CreateSurfaceLights() - ydnar
539 this hijacks the radiosity code to generate surface lights for first pass
542 #define APPROX_BOUNCE 1.0f
544 void CreateSurfaceLights( void ){
546 bspDrawSurface_t *ds;
556 /* get sun shader supressor */
557 nss = ValueForKey( &entities[ 0 ], "_noshadersun" );
559 /* walk the list of surfaces */
560 for ( i = 0; i < numBSPDrawSurfaces; i++ )
562 /* get surface and other bits */
563 ds = &bspDrawSurfaces[ i ];
564 info = &surfaceInfos[ i ];
568 if ( si->sun != NULL && nss[ 0 ] != '1' ) {
569 Sys_FPrintf( SYS_VRB, "Sun: %s\n", si->shader );
570 CreateSunLight( si->sun );
571 si->sun = NULL; /* FIXME: leak! */
575 if ( si->skyLightValue > 0.0f ) {
576 Sys_FPrintf( SYS_VRB, "Sky: %s\n", si->shader );
577 CreateSkyLights( si->color, si->skyLightValue, si->skyLightIterations, si->lightFilterRadius, si->lightStyle );
578 si->skyLightValue = 0.0f; /* FIXME: hack! */
581 /* try to early out */
582 if ( si->value <= 0 ) {
586 /* autosprite shaders become point lights */
587 if ( si->autosprite ) {
588 /* create an average xyz */
589 VectorAdd( info->mins, info->maxs, origin );
590 VectorScale( origin, 0.5f, origin );
593 light = safe_malloc0( sizeof( *light ) );
594 light->next = lights;
598 light->flags = LIGHT_Q3A_DEFAULT;
599 light->type = EMIT_POINT;
600 light->photons = si->value * pointScale;
603 VectorCopy( origin, light->origin );
604 VectorCopy( si->color, light->color );
605 light->falloffTolerance = falloffTolerance;
606 light->style = si->lightStyle;
608 /* add to point light count and continue */
613 /* get subdivision amount */
614 if ( si->lightSubdivide > 0 ) {
615 subdivide = si->lightSubdivide;
618 subdivide = defaultLightSubdivide;
622 switch ( ds->surfaceType )
625 case MST_TRIANGLE_SOUP:
626 RadLightForTriangles( i, 0, info->lm, si, APPROX_BOUNCE, subdivide, &cw );
630 RadLightForPatch( i, 0, info->lm, si, APPROX_BOUNCE, subdivide, &cw );
643 find the offset values for inline models
646 void SetEntityOrigins( void ){
653 bspDrawSurface_t *ds;
656 /* ydnar: copy drawverts into private storage for nefarious purposes */
657 yDrawVerts = safe_malloc( numBSPDrawVerts * sizeof( bspDrawVert_t ) );
658 memcpy( yDrawVerts, bspDrawVerts, numBSPDrawVerts * sizeof( bspDrawVert_t ) );
660 /* set the entity origins */
661 for ( i = 0; i < numEntities; i++ )
663 /* get entity and model */
665 key = ValueForKey( e, "model" );
666 if ( key[ 0 ] != '*' ) {
669 modelnum = atoi( key + 1 );
670 dm = &bspModels[ modelnum ];
672 /* get entity origin */
673 key = ValueForKey( e, "origin" );
674 if ( key[ 0 ] == '\0' ) {
677 GetVectorForKey( e, "origin", origin );
679 /* set origin for all surfaces for this model */
680 for ( j = 0; j < dm->numBSPSurfaces; j++ )
683 ds = &bspDrawSurfaces[ dm->firstBSPSurface + j ];
686 for ( k = 0; k < ds->numVerts; k++ )
688 f = ds->firstVert + k;
689 VectorAdd( origin, bspDrawVerts[ f ].xyz, yDrawVerts[ f ].xyz );
698 PointToPolygonFormFactor()
699 calculates the area over a point/normal hemisphere a winding covers
700 ydnar: fixme: there has to be a faster way to calculate this
701 without the expensive per-vert sqrts and transcendental functions
702 ydnar 2002-09-30: added -faster switch because only 19% deviance > 10%
703 between this and the approximation
706 #define ONE_OVER_2PI 0.159154942f //% (1.0f / (2.0f * 3.141592657f))
708 float PointToPolygonFormFactor( const vec3_t point, const vec3_t normal, const winding_t *w ){
709 vec3_t triVector, triNormal;
711 vec3_t dirs[ MAX_POINTS_ON_WINDING ];
713 float dot, angle, facing;
716 /* this is expensive */
717 for ( i = 0; i < w->numpoints; i++ )
719 VectorSubtract( w->p[ i ], point, dirs[ i ] );
720 VectorNormalize( dirs[ i ], dirs[ i ] );
723 /* duplicate first vertex to avoid mod operation */
724 VectorCopy( dirs[ 0 ], dirs[ i ] );
726 /* calculcate relative area */
728 for ( i = 0; i < w->numpoints; i++ )
732 dot = DotProduct( dirs[ i ], dirs[ j ] );
734 /* roundoff can cause slight creep, which gives an IND from acos */
738 else if ( dot < -1.0f ) {
745 CrossProduct( dirs[ i ], dirs[ j ], triVector );
746 if ( VectorNormalize( triVector, triNormal ) < 0.0001f ) {
750 facing = DotProduct( normal, triNormal );
751 total += facing * angle;
753 /* ydnar: this was throwing too many errors with radiosity + crappy maps. ignoring it. */
754 if ( total > 6.3f || total < -6.3f ) {
759 /* now in the range of 0 to 1 over the entire incoming hemisphere */
760 //% total /= (2.0f * 3.141592657f);
761 total *= ONE_OVER_2PI;
768 LightContributionTosample()
769 determines the amount of light reaching a sample (luxel or vertex) from a given light
772 int LightContributionToSample( trace_t *trace ){
777 float addDeluxe = 0.0f, addDeluxeBounceScale = 0.25f;
778 qboolean angledDeluxe = qtrue;
779 float colorBrightness;
780 qboolean doAddDeluxe = qtrue;
783 light = trace->light;
786 trace->forceSubsampling = 0.0f; /* to make sure */
787 VectorClear( trace->color );
788 VectorClear( trace->colorNoShadow );
789 VectorClear( trace->directionContribution );
791 colorBrightness = RGBTOGRAY( light->color ) * ( 1.0f / 255.0f );
793 /* ydnar: early out */
794 if ( !( light->flags & LIGHT_SURFACES ) || light->envelope <= 0.0f ) {
798 /* do some culling checks */
799 if ( light->type != EMIT_SUN ) {
800 /* MrE: if the light is behind the surface */
801 if ( trace->twoSided == qfalse ) {
802 if ( DotProduct( light->origin, trace->normal ) - DotProduct( trace->origin, trace->normal ) < 0.0f ) {
807 /* ydnar: test pvs */
808 if ( !ClusterVisible( trace->cluster, light->cluster ) ) {
813 /* exact point to polygon form factor */
814 if ( light->type == EMIT_AREA ) {
819 /* project sample point into light plane */
820 d = DotProduct( trace->origin, light->normal ) - light->dist;
822 /* sample point behind plane? */
823 if ( !( light->flags & LIGHT_TWOSIDED ) && d < -1.0f ) {
827 /* sample plane coincident? */
828 if ( d > -3.0f && DotProduct( trace->normal, light->normal ) > 0.9f ) {
833 /* nudge the point so that it is clearly forward of the light */
834 /* so that surfaces meeting a light emitter don't get black edges */
835 if ( d > -8.0f && d < 8.0f ) {
836 VectorMA( trace->origin, ( 8.0f - d ), light->normal, pushedOrigin );
839 VectorCopy( trace->origin, pushedOrigin );
842 /* get direction and distance */
843 VectorCopy( light->origin, trace->end );
844 dist = SetupTrace( trace );
845 if ( dist >= light->envelope ) {
849 /* ptpff approximation */
851 /* angle attenuation */
852 angle = DotProduct( trace->normal, trace->direction );
854 /* twosided lighting */
855 if ( trace->twoSided && angle < 0 ) {
858 /* no deluxemap contribution from "other side" light */
859 doAddDeluxe = qfalse;
863 angle *= -DotProduct( light->normal, trace->direction );
864 if ( angle == 0.0f ) {
867 else if ( angle < 0.0f &&
868 ( trace->twoSided || ( light->flags & LIGHT_TWOSIDED ) ) ) {
871 /* no deluxemap contribution from "other side" light */
872 doAddDeluxe = qfalse;
875 /* clamp the distance to prevent super hot spots */
876 dist = sqrt( dist * dist + light->extraDist * light->extraDist );
877 if ( dist < 16.0f ) {
881 add = light->photons / ( dist * dist ) * angle;
884 if ( angledDeluxe ) {
885 addDeluxe = light->photons / ( dist * dist ) * angle;
888 addDeluxe = light->photons / ( dist * dist );
894 /* calculate the contribution */
895 factor = PointToPolygonFormFactor( pushedOrigin, trace->normal, light->w );
896 if ( factor == 0.0f ) {
899 else if ( factor < 0.0f ) {
900 /* twosided lighting */
901 if ( trace->twoSided || ( light->flags & LIGHT_TWOSIDED ) ) {
904 /* push light origin to other side of the plane */
905 VectorMA( light->origin, -2.0f, light->normal, trace->end );
906 dist = SetupTrace( trace );
907 if ( dist >= light->envelope ) {
911 /* no deluxemap contribution from "other side" light */
912 doAddDeluxe = qfalse;
919 /* also don't deluxe if the direction is on the wrong side */
920 if ( DotProduct( trace->normal, trace->direction ) < 0 ) {
921 /* no deluxemap contribution from "other side" light */
922 doAddDeluxe = qfalse;
925 /* ydnar: moved to here */
926 add = factor * light->add;
934 /* point/spot lights */
935 else if ( light->type == EMIT_POINT || light->type == EMIT_SPOT ) {
936 /* get direction and distance */
937 VectorCopy( light->origin, trace->end );
938 dist = SetupTrace( trace );
939 if ( dist >= light->envelope ) {
943 /* clamp the distance to prevent super hot spots */
944 dist = sqrt( dist * dist + light->extraDist * light->extraDist );
945 if ( dist < 16.0f ) {
949 /* angle attenuation */
950 if ( light->flags & LIGHT_ATTEN_ANGLE ) {
951 /* standard Lambert attenuation */
952 float dot = DotProduct( trace->normal, trace->direction );
954 /* twosided lighting */
955 if ( trace->twoSided && dot < 0 ) {
958 /* no deluxemap contribution from "other side" light */
959 doAddDeluxe = qfalse;
962 /* jal: optional half Lambert attenuation (http://developer.valvesoftware.com/wiki/Half_Lambert) */
963 if ( lightAngleHL ) {
964 if ( dot > 0.001f ) { // skip coplanar
968 dot = ( dot * 0.5f ) + 0.5f;
982 if ( light->angleScale != 0.0f ) {
983 angle /= light->angleScale;
984 if ( angle > 1.0f ) {
990 if ( light->flags & LIGHT_ATTEN_LINEAR ) {
991 add = angle * light->photons * linearScale - ( dist * light->fade );
997 if ( angledDeluxe ) {
998 addDeluxe = angle * light->photons * linearScale - ( dist * light->fade );
1001 addDeluxe = light->photons * linearScale - ( dist * light->fade );
1004 if ( addDeluxe < 0.0f ) {
1011 add = ( light->photons / ( dist * dist ) ) * angle;
1017 if ( angledDeluxe ) {
1018 addDeluxe = ( light->photons / ( dist * dist ) ) * angle;
1021 addDeluxe = ( light->photons / ( dist * dist ) );
1025 if ( addDeluxe < 0.0f ) {
1030 /* handle spotlights */
1031 if ( light->type == EMIT_SPOT ) {
1032 float distByNormal, radiusAtDist, sampleRadius;
1033 vec3_t pointAtDist, distToSample;
1035 /* do cone calculation */
1036 distByNormal = -DotProduct( trace->displacement, light->normal );
1037 if ( distByNormal < 0.0f ) {
1040 VectorMA( light->origin, distByNormal, light->normal, pointAtDist );
1041 radiusAtDist = light->radiusByDist * distByNormal;
1042 VectorSubtract( trace->origin, pointAtDist, distToSample );
1043 sampleRadius = VectorLength( distToSample );
1045 /* outside the cone */
1046 if ( sampleRadius >= radiusAtDist ) {
1051 if ( sampleRadius > ( radiusAtDist - 32.0f ) ) {
1052 add *= ( ( radiusAtDist - sampleRadius ) / 32.0f );
1057 addDeluxe *= ( ( radiusAtDist - sampleRadius ) / 32.0f );
1059 if ( addDeluxe < 0.0f ) {
1066 /* ydnar: sunlight */
1067 else if ( light->type == EMIT_SUN ) {
1068 /* get origin and direction */
1069 VectorAdd( trace->origin, light->origin, trace->end );
1070 dist = SetupTrace( trace );
1072 /* angle attenuation */
1073 if ( light->flags & LIGHT_ATTEN_ANGLE ) {
1074 /* standard Lambert attenuation */
1075 float dot = DotProduct( trace->normal, trace->direction );
1077 /* twosided lighting */
1078 if ( trace->twoSided && dot < 0 ) {
1081 /* no deluxemap contribution from "other side" light */
1082 doAddDeluxe = qfalse;
1085 /* jal: optional half Lambert attenuation (http://developer.valvesoftware.com/wiki/Half_Lambert) */
1086 if ( lightAngleHL ) {
1087 if ( dot > 0.001f ) { // skip coplanar
1091 dot = ( dot * 0.5f ) + 0.5f;
1106 add = light->photons * angle;
1109 if ( angledDeluxe ) {
1110 addDeluxe = light->photons * angle;
1113 addDeluxe = light->photons;
1116 if ( addDeluxe < 0.0f ) {
1121 if ( add <= 0.0f ) {
1125 /* VorteX: set noShadow color */
1126 VectorScale( light->color, add, trace->colorNoShadow );
1128 addDeluxe *= colorBrightness;
1131 addDeluxe *= addDeluxeBounceScale;
1132 if ( addDeluxe < 0.00390625f ) {
1133 addDeluxe = 0.00390625f;
1137 VectorScale( trace->direction, addDeluxe, trace->directionContribution );
1140 trace->testAll = qtrue;
1141 VectorScale( light->color, add, trace->color );
1143 /* trace to point */
1144 if ( trace->testOcclusion && !trace->forceSunlight ) {
1147 trace->forceSubsampling *= add;
1148 if ( !( trace->compileFlags & C_SKY ) || trace->opaque ) {
1149 VectorClear( trace->color );
1150 VectorClear( trace->directionContribution );
1156 /* return to sender */
1160 Error( "Light of undefined type!" );
1163 /* VorteX: set noShadow color */
1164 VectorScale( light->color, add, trace->colorNoShadow );
1166 /* ydnar: changed to a variable number */
1167 if ( add <= 0.0f || ( add <= light->falloffTolerance && ( light->flags & LIGHT_FAST_ACTUAL ) ) ) {
1171 addDeluxe *= colorBrightness;
1173 /* hack land: scale down the radiosity contribution to light directionality.
1174 Deluxemaps fusion many light directions into one. In a rtl process all lights
1175 would contribute individually to the bump map, so several light sources together
1176 would make it more directional (example: a yellow and red lights received from
1177 opposing sides would light one side in red and the other in blue, adding
1178 the effect of 2 directions applied. In the deluxemapping case, this 2 lights would
1179 neutralize each other making it look like having no direction.
1180 Same thing happens with radiosity. In deluxemapping case the radiosity contribution
1181 is modifying the direction applied from directional lights, making it go closer and closer
1182 to the surface normal the bigger is the amount of radiosity received.
1183 So, for preserving the directional lights contributions, we scale down the radiosity
1184 contribution. It's a hack, but there's a reason behind it */
1186 addDeluxe *= addDeluxeBounceScale;
1187 /* better NOT increase it beyond the original value
1188 if( addDeluxe < 0.00390625f )
1189 addDeluxe = 0.00390625f;
1193 if ( doAddDeluxe ) {
1194 VectorScale( trace->direction, addDeluxe, trace->directionContribution );
1198 trace->testAll = qfalse;
1199 VectorScale( light->color, add, trace->color );
1203 trace->forceSubsampling *= add;
1204 if ( trace->passSolid || trace->opaque ) {
1205 VectorClear( trace->color );
1206 VectorClear( trace->directionContribution );
1211 /* return to sender */
1219 determines the amount of light reaching a sample (luxel or vertex)
1222 void LightingAtSample( trace_t *trace, byte styles[ MAX_LIGHTMAPS ], vec3_t colors[ MAX_LIGHTMAPS ] ){
1227 for ( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
1228 VectorClear( colors[ lightmapNum ] );
1230 /* ydnar: normalmap */
1232 colors[ 0 ][ 0 ] = ( trace->normal[ 0 ] + 1.0f ) * 127.5f;
1233 colors[ 0 ][ 1 ] = ( trace->normal[ 1 ] + 1.0f ) * 127.5f;
1234 colors[ 0 ][ 2 ] = ( trace->normal[ 2 ] + 1.0f ) * 127.5f;
1238 /* ydnar: don't bounce ambient all the time */
1240 VectorCopy( ambientColor, colors[ 0 ] );
1243 /* ydnar: trace to all the list of lights pre-stored in tw */
1244 for ( i = 0; i < trace->numLights && trace->lights[ i ] != NULL; i++ )
1247 trace->light = trace->lights[ i ];
1250 for ( lightmapNum = 0; lightmapNum < MAX_LIGHTMAPS; lightmapNum++ )
1252 if ( styles[ lightmapNum ] == trace->light->style ||
1253 styles[ lightmapNum ] == LS_NONE ) {
1258 /* max of MAX_LIGHTMAPS (4) styles allowed to hit a sample */
1259 if ( lightmapNum >= MAX_LIGHTMAPS ) {
1264 LightContributionToSample( trace );
1265 if ( trace->color[ 0 ] == 0.0f && trace->color[ 1 ] == 0.0f && trace->color[ 2 ] == 0.0f ) {
1269 /* handle negative light */
1270 if ( trace->light->flags & LIGHT_NEGATIVE ) {
1271 VectorScale( trace->color, -1.0f, trace->color );
1275 styles[ lightmapNum ] = trace->light->style;
1278 VectorAdd( colors[ lightmapNum ], trace->color, colors[ lightmapNum ] );
1282 colors[ 0 ][ 0 ] >= 255.0f &&
1283 colors[ 0 ][ 1 ] >= 255.0f &&
1284 colors[ 0 ][ 2 ] >= 255.0f ) {
1293 LightContributionToPoint()
1294 for a given light, how much light/color reaches a given point in space (with no facing)
1295 note: this is similar to LightContributionToSample() but optimized for omnidirectional sampling
1298 int LightContributionToPoint( trace_t *trace ){
1304 light = trace->light;
1307 VectorClear( trace->color );
1309 /* ydnar: early out */
1310 if ( !( light->flags & LIGHT_GRID ) || light->envelope <= 0.0f ) {
1314 /* is this a sun? */
1315 if ( light->type != EMIT_SUN ) {
1322 if ( !ClusterVisible( trace->cluster, light->cluster ) ) {
1327 /* ydnar: check origin against light's pvs envelope */
1328 if ( trace->origin[ 0 ] > light->maxs[ 0 ] || trace->origin[ 0 ] < light->mins[ 0 ] ||
1329 trace->origin[ 1 ] > light->maxs[ 1 ] || trace->origin[ 1 ] < light->mins[ 1 ] ||
1330 trace->origin[ 2 ] > light->maxs[ 2 ] || trace->origin[ 2 ] < light->mins[ 2 ] ) {
1335 /* set light origin */
1336 if ( light->type == EMIT_SUN ) {
1337 VectorAdd( trace->origin, light->origin, trace->end );
1340 VectorCopy( light->origin, trace->end );
1344 dist = SetupTrace( trace );
1347 if ( dist > light->envelope ) {
1348 gridEnvelopeCulled++;
1352 /* ptpff approximation */
1353 if ( light->type == EMIT_AREA && faster ) {
1354 /* clamp the distance to prevent super hot spots */
1355 dist = sqrt( dist * dist + light->extraDist * light->extraDist );
1356 if ( dist < 16.0f ) {
1361 add = light->photons / ( dist * dist );
1364 /* exact point to polygon form factor */
1365 else if ( light->type == EMIT_AREA ) {
1367 vec3_t pushedOrigin;
1370 /* see if the point is behind the light */
1371 d = DotProduct( trace->origin, light->normal ) - light->dist;
1372 if ( !( light->flags & LIGHT_TWOSIDED ) && d < -1.0f ) {
1376 /* nudge the point so that it is clearly forward of the light */
1377 /* so that surfaces meeting a light emiter don't get black edges */
1378 if ( d > -8.0f && d < 8.0f ) {
1379 VectorMA( trace->origin, ( 8.0f - d ), light->normal, pushedOrigin );
1382 VectorCopy( trace->origin, pushedOrigin );
1385 /* calculate the contribution (ydnar 2002-10-21: [bug 642] bad normal calc) */
1386 factor = PointToPolygonFormFactor( pushedOrigin, trace->direction, light->w );
1387 if ( factor == 0.0f ) {
1390 else if ( factor < 0.0f ) {
1391 if ( light->flags & LIGHT_TWOSIDED ) {
1399 /* ydnar: moved to here */
1400 add = factor * light->add;
1403 /* point/spot lights */
1404 else if ( light->type == EMIT_POINT || light->type == EMIT_SPOT ) {
1405 /* clamp the distance to prevent super hot spots */
1406 dist = sqrt( dist * dist + light->extraDist * light->extraDist );
1407 if ( dist < 16.0f ) {
1412 if ( light->flags & LIGHT_ATTEN_LINEAR ) {
1413 add = light->photons * linearScale - ( dist * light->fade );
1419 add = light->photons / ( dist * dist );
1422 /* handle spotlights */
1423 if ( light->type == EMIT_SPOT ) {
1424 float distByNormal, radiusAtDist, sampleRadius;
1425 vec3_t pointAtDist, distToSample;
1428 /* do cone calculation */
1429 distByNormal = -DotProduct( trace->displacement, light->normal );
1430 if ( distByNormal < 0.0f ) {
1433 VectorMA( light->origin, distByNormal, light->normal, pointAtDist );
1434 radiusAtDist = light->radiusByDist * distByNormal;
1435 VectorSubtract( trace->origin, pointAtDist, distToSample );
1436 sampleRadius = VectorLength( distToSample );
1438 /* outside the cone */
1439 if ( sampleRadius >= radiusAtDist ) {
1444 if ( sampleRadius > ( radiusAtDist - 32.0f ) ) {
1445 add *= ( ( radiusAtDist - sampleRadius ) / 32.0f );
1450 /* ydnar: sunlight */
1451 else if ( light->type == EMIT_SUN ) {
1453 add = light->photons;
1454 if ( add <= 0.0f ) {
1459 trace->testAll = qtrue;
1460 VectorScale( light->color, add, trace->color );
1462 /* trace to point */
1463 if ( trace->testOcclusion && !trace->forceSunlight ) {
1466 if ( !( trace->compileFlags & C_SKY ) || trace->opaque ) {
1467 VectorClear( trace->color );
1472 /* return to sender */
1476 /* unknown light type */
1481 /* ydnar: changed to a variable number */
1482 if ( add <= 0.0f || ( add <= light->falloffTolerance && ( light->flags & LIGHT_FAST_ACTUAL ) ) ) {
1487 trace->testAll = qfalse;
1488 VectorScale( light->color, add, trace->color );
1492 if ( trace->passSolid ) {
1493 VectorClear( trace->color );
1497 /* we have a valid sample */
1505 grid samples are for quickly determining the lighting
1506 of dynamically placed entities in the world
1509 #define MAX_CONTRIBUTIONS 32768
1520 void TraceGrid( int num ){
1521 int i, j, x, y, z, mod, numCon, numStyles;
1523 vec3_t baseOrigin, cheapColor, color, thisdir;
1525 bspGridPoint_t *bgp;
1526 contribution_t contributions[ MAX_CONTRIBUTIONS ];
1529 /* get grid points */
1530 gp = &rawGridPoints[ num ];
1531 bgp = &bspGridPoints[ num ];
1533 /* get grid origin */
1535 z = mod / ( gridBounds[ 0 ] * gridBounds[ 1 ] );
1536 mod -= z * ( gridBounds[ 0 ] * gridBounds[ 1 ] );
1537 y = mod / gridBounds[ 0 ];
1538 mod -= y * gridBounds[ 0 ];
1541 trace.origin[ 0 ] = gridMins[ 0 ] + x * gridSize[ 0 ];
1542 trace.origin[ 1 ] = gridMins[ 1 ] + y * gridSize[ 1 ];
1543 trace.origin[ 2 ] = gridMins[ 2 ] + z * gridSize[ 2 ];
1545 /* set inhibit sphere */
1546 if ( gridSize[ 0 ] > gridSize[ 1 ] && gridSize[ 0 ] > gridSize[ 2 ] ) {
1547 trace.inhibitRadius = gridSize[ 0 ] * 0.5f;
1549 else if ( gridSize[ 1 ] > gridSize[ 0 ] && gridSize[ 1 ] > gridSize[ 2 ] ) {
1550 trace.inhibitRadius = gridSize[ 1 ] * 0.5f;
1553 trace.inhibitRadius = gridSize[ 2 ] * 0.5f;
1556 /* find point cluster */
1557 trace.cluster = ClusterForPointExt( trace.origin, GRID_EPSILON );
1558 if ( trace.cluster < 0 ) {
1559 /* try to nudge the origin around to find a valid point */
1560 VectorCopy( trace.origin, baseOrigin );
1561 for ( step = 0; ( step += 0.005 ) <= 1.0; )
1563 VectorCopy( baseOrigin, trace.origin );
1564 trace.origin[ 0 ] += step * ( Random() - 0.5 ) * gridSize[0];
1565 trace.origin[ 1 ] += step * ( Random() - 0.5 ) * gridSize[1];
1566 trace.origin[ 2 ] += step * ( Random() - 0.5 ) * gridSize[2];
1568 /* ydnar: changed to find cluster num */
1569 trace.cluster = ClusterForPointExt( trace.origin, VERTEX_EPSILON );
1570 if ( trace.cluster >= 0 ) {
1575 /* can't find a valid point at all */
1582 trace.testOcclusion = !noTrace;
1583 trace.forceSunlight = qfalse;
1584 trace.recvShadows = WORLDSPAWN_RECV_SHADOWS;
1585 trace.numSurfaces = 0;
1586 trace.surfaces = NULL;
1587 trace.numLights = 0;
1588 trace.lights = NULL;
1592 VectorClear( cheapColor );
1594 /* trace to all the lights, find the major light direction, and divide the
1595 total light between that along the direction and the remaining in the ambient */
1596 for ( trace.light = lights; trace.light != NULL; trace.light = trace.light->next )
1602 if ( !LightContributionToPoint( &trace ) ) {
1606 /* handle negative light */
1607 if ( trace.light->flags & LIGHT_NEGATIVE ) {
1608 VectorScale( trace.color, -1.0f, trace.color );
1611 /* add a contribution */
1612 VectorCopy( trace.color, contributions[ numCon ].color );
1613 VectorCopy( trace.direction, contributions[ numCon ].dir );
1614 VectorClear( contributions[ numCon ].ambient );
1615 contributions[ numCon ].style = trace.light->style;
1618 /* push average direction around */
1619 addSize = VectorLength( trace.color );
1620 VectorMA( gp->dir, addSize, trace.direction, gp->dir );
1622 /* stop after a while */
1623 if ( numCon >= ( MAX_CONTRIBUTIONS - 1 ) ) {
1627 /* ydnar: cheap mode */
1628 VectorAdd( cheapColor, trace.color, cheapColor );
1629 if ( cheapgrid && cheapColor[ 0 ] >= 255.0f && cheapColor[ 1 ] >= 255.0f && cheapColor[ 2 ] >= 255.0f ) {
1634 /////// Floodlighting for point //////////////////
1635 //do our floodlight ambient occlusion loop, and add a single contribution based on the brightest dir
1636 if ( floodlighty ) {
1639 vec3_t dir = { 0, 0, 1 };
1640 float ambientFrac = 0.25f;
1642 trace.testOcclusion = qtrue;
1643 trace.forceSunlight = qfalse;
1644 trace.inhibitRadius = DEFAULT_INHIBIT_RADIUS;
1645 trace.testAll = qtrue;
1647 for ( k = 0; k < 2; k++ )
1649 if ( k == 0 ) { // upper hemisphere
1650 trace.normal[0] = 0;
1651 trace.normal[1] = 0;
1652 trace.normal[2] = 1;
1654 else //lower hemisphere
1656 trace.normal[0] = 0;
1657 trace.normal[1] = 0;
1658 trace.normal[2] = -1;
1661 f = FloodLightForSample( &trace, floodlightDistance, floodlight_lowquality );
1663 /* add a fraction as pure ambient, half as top-down direction */
1664 contributions[ numCon ].color[0] = floodlightRGB[0] * floodlightIntensity * f * ( 1.0f - ambientFrac );
1665 contributions[ numCon ].color[1] = floodlightRGB[1] * floodlightIntensity * f * ( 1.0f - ambientFrac );
1666 contributions[ numCon ].color[2] = floodlightRGB[2] * floodlightIntensity * f * ( 1.0f - ambientFrac );
1668 contributions[ numCon ].ambient[0] = floodlightRGB[0] * floodlightIntensity * f * ambientFrac;
1669 contributions[ numCon ].ambient[1] = floodlightRGB[1] * floodlightIntensity * f * ambientFrac;
1670 contributions[ numCon ].ambient[2] = floodlightRGB[2] * floodlightIntensity * f * ambientFrac;
1672 contributions[ numCon ].dir[0] = dir[0];
1673 contributions[ numCon ].dir[1] = dir[1];
1674 contributions[ numCon ].dir[2] = dir[2];
1676 contributions[ numCon ].style = 0;
1678 /* push average direction around */
1679 addSize = VectorLength( contributions[ numCon ].color );
1680 VectorMA( gp->dir, addSize, dir, gp->dir );
1685 /////////////////////
1687 /* normalize to get primary light direction */
1688 VectorNormalize( gp->dir, thisdir );
1690 /* now that we have identified the primary light direction,
1691 go back and separate all the light into directed and ambient */
1694 for ( i = 0; i < numCon; i++ )
1696 /* get relative directed strength */
1697 d = DotProduct( contributions[ i ].dir, thisdir );
1698 /* we map 1 to gridDirectionality, and 0 to gridAmbientDirectionality */
1699 d = gridAmbientDirectionality + d * ( gridDirectionality - gridAmbientDirectionality );
1704 /* find appropriate style */
1705 for ( j = 0; j < numStyles; j++ )
1707 if ( gp->styles[ j ] == contributions[ i ].style ) {
1712 /* style not found? */
1713 if ( j >= numStyles ) {
1714 /* add a new style */
1715 if ( numStyles < MAX_LIGHTMAPS ) {
1716 gp->styles[ numStyles ] = contributions[ i ].style;
1717 bgp->styles[ numStyles ] = contributions[ i ].style;
1719 //% Sys_Printf( "(%d, %d) ", num, contributions[ i ].style );
1728 /* add the directed color */
1729 VectorMA( gp->directed[ j ], d, contributions[ i ].color, gp->directed[ j ] );
1731 /* ambient light will be at 1/4 the value of directed light */
1732 /* (ydnar: nuke this in favor of more dramatic lighting?) */
1733 /* (PM: how about actually making it work? d=1 when it got here for single lights/sun :P */
1735 /* (Hobbes: always setting it to .25 is hardly any better) */
1736 d = 0.25f * ( 1.0f - d );
1737 VectorMA( gp->ambient[ j ], d, contributions[ i ].color, gp->ambient[ j ] );
1739 VectorAdd( gp->ambient[ j ], contributions[ i ].ambient, gp->ambient[ j ] );
1743 * the total light average = ambient value + 0.25 * sum of all directional values
1744 * we can also get the total light average as 0.25 * the sum of all contributions
1746 * 0.25 * sum(contribution_i) == ambient + 0.25 * sum(d_i contribution_i)
1749 * ambient == 0.25 * sum((1 - d_i) contribution_i)
1751 * So, 0.25f * (1.0f - d) IS RIGHT. If you want to tune it, tune d BEFORE.
1756 /* store off sample */
1757 for ( i = 0; i < MAX_LIGHTMAPS; i++ )
1760 /* do some fudging to keep the ambient from being too low (2003-07-05: 0.25 -> 0.125) */
1762 VectorMA( gp->ambient[ i ], 0.125f, gp->directed[ i ], gp->ambient[ i ] );
1766 /* set minimum light and copy off to bytes */
1767 VectorCopy( gp->ambient[ i ], color );
1768 for ( j = 0; j < 3; j++ )
1769 if ( color[ j ] < minGridLight[ j ] ) {
1770 color[ j ] = minGridLight[ j ];
1773 /* vortex: apply gridscale and gridambientscale here */
1774 if (gp->directed[i][0] || gp->directed[i][1] || gp->directed[i][2]) {
1776 * HACK: if there's a non-zero directed component, this
1777 * lightgrid cell is useful. However, ioq3 skips grid
1778 * cells with zero ambient. So let's force ambient to be
1779 * nonzero unless directed is zero too.
1781 ColorToBytesNonZero(color, bgp->ambient[i], gridScale * gridAmbientScale);
1783 ColorToBytes(color, bgp->ambient[i], gridScale * gridAmbientScale);
1785 ColorToBytes( gp->directed[ i ], bgp->directed[ i ], gridScale );
1790 //% Sys_FPrintf( SYS_VRB, "%10d %10d %10d ", &gp->ambient[ 0 ][ 0 ], &gp->ambient[ 0 ][ 1 ], &gp->ambient[ 0 ][ 2 ] );
1791 Sys_FPrintf( SYS_VRB, "%9d Amb: (%03.1f %03.1f %03.1f) Dir: (%03.1f %03.1f %03.1f)\n",
1793 gp->ambient[ 0 ][ 0 ], gp->ambient[ 0 ][ 1 ], gp->ambient[ 0 ][ 2 ],
1794 gp->directed[ 0 ][ 0 ], gp->directed[ 0 ][ 1 ], gp->directed[ 0 ][ 2 ] );
1797 /* store direction */
1798 NormalToLatLong( thisdir, bgp->latLong );
1805 calculates the size of the lightgrid and allocates memory
1808 void SetupGrid( void ){
1810 vec3_t maxs, oldGridSize;
1815 /* don't do this if not grid lighting */
1816 if ( noGridLighting ) {
1820 /* ydnar: set grid size */
1821 value = ValueForKey( &entities[ 0 ], "gridsize" );
1822 if ( value[ 0 ] != '\0' ) {
1823 sscanf( value, "%f %f %f", &gridSize[ 0 ], &gridSize[ 1 ], &gridSize[ 2 ] );
1827 VectorCopy( gridSize, oldGridSize );
1828 for ( i = 0; i < 3; i++ )
1829 gridSize[ i ] = gridSize[ i ] >= 8.0f ? floor( gridSize[ i ] ) : 8.0f;
1831 /* ydnar: increase gridSize until grid count is smaller than max allowed */
1832 numRawGridPoints = MAX_MAP_LIGHTGRID + 1;
1834 while ( numRawGridPoints > MAX_MAP_LIGHTGRID )
1836 /* get world bounds */
1837 for ( i = 0; i < 3; i++ )
1839 gridMins[ i ] = gridSize[ i ] * ceil( bspModels[ 0 ].mins[ i ] / gridSize[ i ] );
1840 maxs[ i ] = gridSize[ i ] * floor( bspModels[ 0 ].maxs[ i ] / gridSize[ i ] );
1841 gridBounds[ i ] = ( maxs[ i ] - gridMins[ i ] ) / gridSize[ i ] + 1;
1845 numRawGridPoints = gridBounds[ 0 ] * gridBounds[ 1 ] * gridBounds[ 2 ];
1847 /* increase grid size a bit */
1848 if ( numRawGridPoints > MAX_MAP_LIGHTGRID ) {
1849 gridSize[ j++ % 3 ] += 16.0f;
1854 Sys_Printf( "Grid size = { %1.0f, %1.0f, %1.0f }\n", gridSize[ 0 ], gridSize[ 1 ], gridSize[ 2 ] );
1857 if ( !VectorCompare( gridSize, oldGridSize ) ) {
1858 sprintf( temp, "%.0f %.0f %.0f", gridSize[ 0 ], gridSize[ 1 ], gridSize[ 2 ] );
1859 SetKeyValue( &entities[ 0 ], "gridsize", (const char*) temp );
1860 Sys_FPrintf( SYS_VRB, "Storing adjusted grid size\n" );
1863 /* 2nd variable. fixme: is this silly? */
1864 numBSPGridPoints = numRawGridPoints;
1866 /* allocate lightgrid */
1867 rawGridPoints = safe_malloc0( numRawGridPoints * sizeof( *rawGridPoints ) );
1869 if ( bspGridPoints != NULL ) {
1870 free( bspGridPoints );
1872 bspGridPoints = safe_malloc0( numBSPGridPoints * sizeof( *bspGridPoints ) );
1874 /* clear lightgrid */
1875 for ( i = 0; i < numRawGridPoints; i++ )
1877 VectorCopy( ambientColor, rawGridPoints[ i ].ambient[ j ] );
1878 rawGridPoints[ i ].styles[ 0 ] = LS_NORMAL;
1879 bspGridPoints[ i ].styles[ 0 ] = LS_NORMAL;
1880 for ( j = 1; j < MAX_LIGHTMAPS; j++ )
1882 rawGridPoints[ i ].styles[ j ] = LS_NONE;
1883 bspGridPoints[ i ].styles[ j ] = LS_NONE;
1888 Sys_Printf( "%9d grid points\n", numRawGridPoints );
1895 does what it says...
1898 void LightWorld( const char *BSPFilePath, qboolean fastAllocate, qboolean noBounceStore ){
1902 qboolean minVertex, minGrid;
1905 /* ydnar: smooth normals */
1907 Sys_Printf( "--- SmoothNormals ---\n" );
1911 /* determine the number of grid points */
1912 Sys_Printf( "--- SetupGrid ---\n" );
1915 /* find the optional minimum lighting values */
1916 GetVectorForKey( &entities[ 0 ], "_color", color );
1917 if ( VectorLength( color ) == 0.0f ) {
1918 VectorSet( color, 1.0, 1.0, 1.0 );
1922 color[0] = Image_LinearFloatFromsRGBFloat( color[0] );
1923 color[1] = Image_LinearFloatFromsRGBFloat( color[1] );
1924 color[2] = Image_LinearFloatFromsRGBFloat( color[2] );
1928 f = FloatForKey( &entities[ 0 ], "_ambient" );
1930 f = FloatForKey( &entities[ 0 ], "ambient" );
1932 VectorScale( color, f, ambientColor );
1934 /* minvertexlight */
1936 value = ValueForKey( &entities[ 0 ], "_minvertexlight" );
1937 if ( value[ 0 ] != '\0' ) {
1940 VectorScale( color, f, minVertexLight );
1945 value = ValueForKey( &entities[ 0 ], "_mingridlight" );
1946 if ( value[ 0 ] != '\0' ) {
1949 VectorScale( color, f, minGridLight );
1953 value = ValueForKey( &entities[ 0 ], "_minlight" );
1954 if ( value[ 0 ] != '\0' ) {
1956 VectorScale( color, f, minLight );
1957 if ( minVertex == qfalse ) {
1958 VectorScale( color, f, minVertexLight );
1960 if ( minGrid == qfalse ) {
1961 VectorScale( color, f, minGridLight );
1965 /* create world lights */
1966 Sys_FPrintf( SYS_VRB, "--- CreateLights ---\n" );
1967 CreateEntityLights();
1968 CreateSurfaceLights();
1969 Sys_Printf( "%9d point lights\n", numPointLights );
1970 Sys_Printf( "%9d spotlights\n", numSpotLights );
1971 Sys_Printf( "%9d diffuse (area) lights\n", numDiffuseLights );
1972 Sys_Printf( "%9d sun/sky lights\n", numSunLights );
1974 /* calculate lightgrid */
1975 if ( !noGridLighting ) {
1976 /* ydnar: set up light envelopes */
1977 SetupEnvelopes( qtrue, fastgrid );
1979 Sys_Printf( "--- TraceGrid ---\n" );
1981 RunThreadsOnIndividual( numRawGridPoints, qtrue, TraceGrid );
1983 Sys_Printf( "%d x %d x %d = %d grid\n",
1984 gridBounds[ 0 ], gridBounds[ 1 ], gridBounds[ 2 ], numBSPGridPoints );
1986 /* ydnar: emit statistics on light culling */
1987 Sys_FPrintf( SYS_VRB, "%9d grid points envelope culled\n", gridEnvelopeCulled );
1988 Sys_FPrintf( SYS_VRB, "%9d grid points bounds culled\n", gridBoundsCulled );
1991 /* slight optimization to remove a sqrt */
1992 subdivideThreshold *= subdivideThreshold;
1994 /* map the world luxels */
1995 Sys_Printf( "--- MapRawLightmap ---\n" );
1996 RunThreadsOnIndividual( numRawLightmaps, qtrue, MapRawLightmap );
1997 Sys_Printf( "%9d luxels\n", numLuxels );
1998 Sys_Printf( "%9d luxels mapped\n", numLuxelsMapped );
1999 Sys_Printf( "%9d luxels occluded\n", numLuxelsOccluded );
2003 Sys_Printf( "--- DirtyRawLightmap ---\n" );
2004 RunThreadsOnIndividual( numRawLightmaps, qtrue, DirtyRawLightmap );
2007 /* floodlight pass */
2008 FloodlightRawLightmaps();
2010 /* ydnar: set up light envelopes */
2011 SetupEnvelopes( qfalse, fast );
2013 /* light up my world */
2014 lightsPlaneCulled = 0;
2015 lightsEnvelopeCulled = 0;
2016 lightsBoundsCulled = 0;
2017 lightsClusterCulled = 0;
2019 Sys_Printf( "--- IlluminateRawLightmap ---\n" );
2020 RunThreadsOnIndividual( numRawLightmaps, qtrue, IlluminateRawLightmap );
2021 Sys_Printf( "%9d luxels illuminated\n", numLuxelsIlluminated );
2023 StitchSurfaceLightmaps();
2025 Sys_Printf( "--- IlluminateVertexes ---\n" );
2026 RunThreadsOnIndividual( numBSPDrawSurfaces, qtrue, IlluminateVertexes );
2027 Sys_Printf( "%9d vertexes illuminated\n", numVertsIlluminated );
2029 /* ydnar: emit statistics on light culling */
2030 Sys_FPrintf( SYS_VRB, "%9d lights plane culled\n", lightsPlaneCulled );
2031 Sys_FPrintf( SYS_VRB, "%9d lights envelope culled\n", lightsEnvelopeCulled );
2032 Sys_FPrintf( SYS_VRB, "%9d lights bounds culled\n", lightsBoundsCulled );
2033 Sys_FPrintf( SYS_VRB, "%9d lights cluster culled\n", lightsClusterCulled );
2039 while ( bounce > 0 )
2041 qboolean storeForReal = !noBounceStore;
2043 /* store off the bsp between bounces */
2044 StoreSurfaceLightmaps( fastAllocate, storeForReal );
2047 if ( storeForReal ) {
2048 Sys_Printf( "Writing %s\n", BSPFilePath );
2049 WriteBSPFile( BSPFilePath );
2053 Sys_Printf( "\n--- Radiosity (bounce %d of %d) ---\n", b, bt );
2057 VectorClear( ambientColor );
2058 floodlighty = qfalse;
2060 /* generate diffuse lights */
2062 RadCreateDiffuseLights();
2064 /* setup light envelopes */
2065 SetupEnvelopes( qfalse, fastbounce );
2066 if ( numLights == 0 ) {
2067 Sys_Printf( "No diffuse light to calculate, ending radiosity.\n" );
2068 if ( noBounceStore ) {
2074 /* add to lightgrid */
2076 gridEnvelopeCulled = 0;
2077 gridBoundsCulled = 0;
2079 Sys_Printf( "--- BounceGrid ---\n" );
2081 RunThreadsOnIndividual( numRawGridPoints, qtrue, TraceGrid );
2083 Sys_FPrintf( SYS_VRB, "%9d grid points envelope culled\n", gridEnvelopeCulled );
2084 Sys_FPrintf( SYS_VRB, "%9d grid points bounds culled\n", gridBoundsCulled );
2087 /* light up my world */
2088 lightsPlaneCulled = 0;
2089 lightsEnvelopeCulled = 0;
2090 lightsBoundsCulled = 0;
2091 lightsClusterCulled = 0;
2093 Sys_Printf( "--- IlluminateRawLightmap ---\n" );
2094 RunThreadsOnIndividual( numRawLightmaps, qtrue, IlluminateRawLightmap );
2095 Sys_Printf( "%9d luxels illuminated\n", numLuxelsIlluminated );
2096 Sys_Printf( "%9d vertexes illuminated\n", numVertsIlluminated );
2098 StitchSurfaceLightmaps();
2100 Sys_Printf( "--- IlluminateVertexes ---\n" );
2101 RunThreadsOnIndividual( numBSPDrawSurfaces, qtrue, IlluminateVertexes );
2102 Sys_Printf( "%9d vertexes illuminated\n", numVertsIlluminated );
2104 /* ydnar: emit statistics on light culling */
2105 Sys_FPrintf( SYS_VRB, "%9d lights plane culled\n", lightsPlaneCulled );
2106 Sys_FPrintf( SYS_VRB, "%9d lights envelope culled\n", lightsEnvelopeCulled );
2107 Sys_FPrintf( SYS_VRB, "%9d lights bounds culled\n", lightsBoundsCulled );
2108 Sys_FPrintf( SYS_VRB, "%9d lights cluster culled\n", lightsClusterCulled );
2115 /* ydnar: store off lightmaps */
2116 StoreSurfaceLightmaps( fastAllocate, qtrue );
2123 added by spoon to get back the changed surfaceflags
2127 void LoadSurfaceFlags( char *filename ) {
2130 for( i = 0; i < numBSPShaders; i++ ) {
2133 si = ShaderInfoForShader( bspShaders[i].shader );
2135 bspShaders[ i ].surfaceFlags = si->surfaceFlags;
2143 main routine for light processing
2146 int LightMain( int argc, char **argv ){
2149 char BSPFilePath[ 1024 ];
2150 char surfaceFilePath[ 1024 ];
2152 surfaceFilePath[0] = 0;
2154 int lightmapMergeSize = 0;
2155 qboolean lightSamplesInsist = qfalse;
2156 qboolean fastAllocate = qfalse;
2157 qboolean noBounceStore = qfalse;
2160 Sys_Printf( "--- Light ---\n" );
2161 Sys_Printf( "--- ProcessGameSpecific ---\n" );
2163 /* set standard game flags */
2164 wolfLight = game->wolfLight;
2165 if ( wolfLight == qtrue ) {
2166 Sys_Printf( " lightning model: wolf\n" );
2169 Sys_Printf( " lightning model: quake3\n" );
2172 lmCustomSize = game->lightmapSize;
2173 Sys_Printf( " lightmap size: %d x %d pixels\n", lmCustomSize, lmCustomSize );
2175 lightmapGamma = game->lightmapGamma;
2176 Sys_Printf( " lightning gamma: %f\n", lightmapGamma );
2178 lightmapsRGB = game->lightmapsRGB;
2179 if ( lightmapsRGB ) {
2180 Sys_Printf( " lightmap colorspace: sRGB\n" );
2183 Sys_Printf( " lightmap colorspace: linear\n" );
2186 texturesRGB = game->texturesRGB;
2187 if ( texturesRGB ) {
2188 Sys_Printf( " texture colorspace: sRGB\n" );
2191 Sys_Printf( " texture colorspace: linear\n" );
2194 colorsRGB = game->colorsRGB;
2196 Sys_Printf( " _color colorspace: sRGB\n" );
2199 Sys_Printf( " _color colorspace: linear\n" );
2202 lightmapCompensate = game->lightmapCompensate;
2203 Sys_Printf( " lightning compensation: %f\n", lightmapCompensate );
2205 lightmapExposure = game->lightmapExposure;
2206 Sys_Printf( " lightning exposure: %f\n", lightmapExposure );
2208 gridScale = game->gridScale;
2209 Sys_Printf( " lightgrid scale: %f\n", gridScale );
2211 gridAmbientScale = game->gridAmbientScale;
2212 Sys_Printf( " lightgrid ambient scale: %f\n", gridAmbientScale );
2214 lightAngleHL = game->lightAngleHL;
2215 if ( lightAngleHL ) {
2216 Sys_Printf( " half lambert light angle attenuation enabled \n" );
2219 noStyles = game->noStyles;
2220 if ( noStyles == qtrue ) {
2221 Sys_Printf( " shader lightstyles hack: disabled\n" );
2224 Sys_Printf( " shader lightstyles hack: enabled\n" );
2227 patchShadows = game->patchShadows;
2228 if ( patchShadows == qtrue ) {
2229 Sys_Printf( " patch shadows: enabled\n" );
2232 Sys_Printf( " patch shadows: disabled\n" );
2235 deluxemap = game->deluxeMap;
2236 deluxemode = game->deluxeMode;
2237 if ( deluxemap == qtrue ) {
2239 Sys_Printf( " deluxemapping: enabled with tangentspace deluxemaps\n" );
2242 Sys_Printf( " deluxemapping: enabled with modelspace deluxemaps\n" );
2246 Sys_Printf( " deluxemapping: disabled\n" );
2249 Sys_Printf( "--- ProcessCommandLine ---\n" );
2251 /* process commandline arguments */
2252 for ( i = 1; i < ( argc - 1 ); i++ )
2254 /* lightsource scaling */
2255 if ( !strcmp( argv[ i ], "-point" ) || !strcmp( argv[ i ], "-pointscale" ) ) {
2256 f = atof( argv[ i + 1 ] );
2259 Sys_Printf( "Spherical point (entity) light scaled by %f to %f\n", f, pointScale );
2260 Sys_Printf( "Spot point (entity) light scaled by %f to %f\n", f, spotScale );
2264 else if ( !strcmp( argv[ i ], "-spherical" ) || !strcmp( argv[ i ], "-sphericalscale" ) ) {
2265 f = atof( argv[ i + 1 ] );
2267 Sys_Printf( "Spherical point (entity) light scaled by %f to %f\n", f, pointScale );
2271 else if ( !strcmp( argv[ i ], "-spot" ) || !strcmp( argv[ i ], "-spotscale" ) ) {
2272 f = atof( argv[ i + 1 ] );
2274 Sys_Printf( "Spot point (entity) light scaled by %f to %f\n", f, spotScale );
2278 else if ( !strcmp( argv[ i ], "-area" ) || !strcmp( argv[ i ], "-areascale" ) ) {
2279 f = atof( argv[ i + 1 ] );
2281 Sys_Printf( "Area (shader) light scaled by %f to %f\n", f, areaScale );
2285 else if ( !strcmp( argv[ i ], "-sky" ) || !strcmp( argv[ i ], "-skyscale" ) ) {
2286 f = atof( argv[ i + 1 ] );
2288 Sys_Printf( "Sky/sun light scaled by %f to %f\n", f, skyScale );
2292 else if ( !strcmp( argv[ i ], "-bouncescale" ) ) {
2293 f = atof( argv[ i + 1 ] );
2295 Sys_Printf( "Bounce (radiosity) light scaled by %f to %f\n", f, bounceScale );
2299 else if ( !strcmp( argv[ i ], "-scale" ) ) {
2300 f = atof( argv[ i + 1 ] );
2306 Sys_Printf( "All light scaled by %f\n", f );
2310 else if ( !strcmp( argv[ i ], "-gridscale" ) ) {
2311 f = atof( argv[ i + 1 ] );
2312 Sys_Printf( "Grid lightning scaled by %f\n", f );
2317 else if ( !strcmp( argv[ i ], "-gridambientscale" ) ) {
2318 f = atof( argv[ i + 1 ] );
2319 Sys_Printf( "Grid ambient lightning scaled by %f\n", f );
2320 gridAmbientScale *= f;
2324 else if ( !strcmp( argv[ i ], "-griddirectionality" ) ) {
2325 f = atof( argv[ i + 1 ] );
2329 if ( f < gridAmbientDirectionality ) {
2330 gridAmbientDirectionality = f;
2332 Sys_Printf( "Grid directionality is %f\n", f );
2333 gridDirectionality = f;
2337 else if ( !strcmp( argv[ i ], "-gridambientdirectionality" ) ) {
2338 f = atof( argv[ i + 1 ] );
2342 if ( f > gridDirectionality ) {
2343 gridDirectionality = f;
2345 Sys_Printf( "Grid ambient directionality is %f\n", f );
2346 gridAmbientDirectionality = f;
2350 else if ( !strcmp( argv[ i ], "-gamma" ) ) {
2351 f = atof( argv[ i + 1 ] );
2353 Sys_Printf( "Lighting gamma set to %f\n", lightmapGamma );
2357 else if ( !strcmp( argv[ i ], "-sRGBlight" ) ) {
2358 lightmapsRGB = qtrue;
2359 Sys_Printf( "Lighting is in sRGB\n" );
2362 else if ( !strcmp( argv[ i ], "-nosRGBlight" ) ) {
2363 lightmapsRGB = qfalse;
2364 Sys_Printf( "Lighting is linear\n" );
2367 else if ( !strcmp( argv[ i ], "-sRGBtex" ) ) {
2368 texturesRGB = qtrue;
2369 Sys_Printf( "Textures are in sRGB\n" );
2372 else if ( !strcmp( argv[ i ], "-nosRGBtex" ) ) {
2373 texturesRGB = qfalse;
2374 Sys_Printf( "Textures are linear\n" );
2377 else if ( !strcmp( argv[ i ], "-sRGBcolor" ) ) {
2379 Sys_Printf( "Colors are in sRGB\n" );
2382 else if ( !strcmp( argv[ i ], "-nosRGBcolor" ) ) {
2384 Sys_Printf( "Colors are linear\n" );
2387 else if ( !strcmp( argv[ i ], "-sRGB" ) ) {
2388 lightmapsRGB = qtrue;
2389 Sys_Printf( "Lighting is in sRGB\n" );
2390 texturesRGB = qtrue;
2391 Sys_Printf( "Textures are in sRGB\n" );
2393 Sys_Printf( "Colors are in sRGB\n" );
2396 else if ( !strcmp( argv[ i ], "-nosRGB" ) ) {
2397 lightmapsRGB = qfalse;
2398 Sys_Printf( "Lighting is linear\n" );
2399 texturesRGB = qfalse;
2400 Sys_Printf( "Textures are linear\n" );
2402 Sys_Printf( "Colors are linear\n" );
2405 else if ( !strcmp( argv[ i ], "-exposure" ) ) {
2406 f = atof( argv[ i + 1 ] );
2407 lightmapExposure = f;
2408 Sys_Printf( "Lighting exposure set to %f\n", lightmapExposure );
2412 else if ( !strcmp( argv[ i ], "-compensate" ) ) {
2413 f = atof( argv[ i + 1 ] );
2417 lightmapCompensate = f;
2418 Sys_Printf( "Lighting compensation set to 1/%f\n", lightmapCompensate );
2422 /* ydnar switches */
2423 else if ( !strcmp( argv[ i ], "-bounce" ) ) {
2424 bounce = atoi( argv[ i + 1 ] );
2428 else if ( bounce > 0 ) {
2429 Sys_Printf( "Radiosity enabled with %d bounce(s)\n", bounce );
2434 else if ( !strcmp( argv[ i ], "-supersample" ) || !strcmp( argv[ i ], "-super" ) ) {
2435 superSample = atoi( argv[ i + 1 ] );
2436 if ( superSample < 1 ) {
2439 else if ( superSample > 1 ) {
2440 Sys_Printf( "Ordered-grid supersampling enabled with %d sample(s) per lightmap texel\n", ( superSample * superSample ) );
2445 else if ( !strcmp( argv[ i ], "-randomsamples" ) ) {
2446 lightRandomSamples = qtrue;
2447 Sys_Printf( "Random sampling enabled\n", lightRandomSamples );
2450 else if ( !strcmp( argv[ i ], "-samples" ) ) {
2451 if ( *argv[i + 1] == '+' ) {
2452 lightSamplesInsist = qtrue;
2455 lightSamplesInsist = qfalse;
2457 lightSamples = atoi( argv[ i + 1 ] );
2458 if ( lightSamples < 1 ) {
2461 else if ( lightSamples > 1 ) {
2462 Sys_Printf( "Adaptive supersampling enabled with %d sample(s) per lightmap texel\n", lightSamples );
2467 else if ( !strcmp( argv[ i ], "-samplessearchboxsize" ) ) {
2468 lightSamplesSearchBoxSize = atoi( argv[ i + 1 ] );
2469 if ( lightSamplesSearchBoxSize <= 0 ) {
2470 lightSamplesSearchBoxSize = 1;
2472 if ( lightSamplesSearchBoxSize > 4 ) {
2473 lightSamplesSearchBoxSize = 4; /* more makes no sense */
2475 else if ( lightSamplesSearchBoxSize != 1 ) {
2476 Sys_Printf( "Adaptive supersampling uses %f times the normal search box size\n", lightSamplesSearchBoxSize );
2481 else if ( !strcmp( argv[ i ], "-filter" ) ) {
2483 Sys_Printf( "Lightmap filtering enabled\n" );
2486 else if ( !strcmp( argv[ i ], "-dark" ) ) {
2488 Sys_Printf( "Dark lightmap seams enabled\n" );
2491 else if ( !strcmp( argv[ i ], "-shadeangle" ) ) {
2492 shadeAngleDegrees = atof( argv[ i + 1 ] );
2493 if ( shadeAngleDegrees < 0.0f ) {
2494 shadeAngleDegrees = 0.0f;
2496 else if ( shadeAngleDegrees > 0.0f ) {
2498 Sys_Printf( "Phong shading enabled with a breaking angle of %f degrees\n", shadeAngleDegrees );
2503 else if ( !strcmp( argv[ i ], "-thresh" ) ) {
2504 subdivideThreshold = atof( argv[ i + 1 ] );
2505 if ( subdivideThreshold < 0 ) {
2506 subdivideThreshold = DEFAULT_SUBDIVIDE_THRESHOLD;
2509 Sys_Printf( "Subdivision threshold set at %.3f\n", subdivideThreshold );
2514 else if ( !strcmp( argv[ i ], "-approx" ) ) {
2515 approximateTolerance = atoi( argv[ i + 1 ] );
2516 if ( approximateTolerance < 0 ) {
2517 approximateTolerance = 0;
2519 else if ( approximateTolerance > 0 ) {
2520 Sys_Printf( "Approximating lightmaps within a byte tolerance of %d\n", approximateTolerance );
2525 else if ( !strcmp( argv[ i ], "-deluxe" ) || !strcmp( argv[ i ], "-deluxemap" ) ) {
2527 Sys_Printf( "Generating deluxemaps for average light direction\n" );
2529 else if ( !strcmp( argv[ i ], "-deluxemode" ) ) {
2530 deluxemode = atoi( argv[ i + 1 ] );
2531 if ( deluxemode == 0 || deluxemode > 1 || deluxemode < 0 ) {
2532 Sys_Printf( "Generating modelspace deluxemaps\n" );
2536 Sys_Printf( "Generating tangentspace deluxemaps\n" );
2540 else if ( !strcmp( argv[ i ], "-nodeluxe" ) || !strcmp( argv[ i ], "-nodeluxemap" ) ) {
2542 Sys_Printf( "Disabling generating of deluxemaps for average light direction\n" );
2544 else if ( !strcmp( argv[ i ], "-external" ) ) {
2545 externalLightmaps = qtrue;
2546 Sys_Printf( "Storing all lightmaps externally\n" );
2549 else if ( !strcmp( argv[ i ], "-externalnames" ) ) {
2550 externalLightmaps = qtrue;
2551 externalLightmapNames = qtrue;
2552 Sys_Printf( "Writing lightstyle shader using external lightmap names\n" );
2555 else if ( !strcmp( argv[ i ], "-lightmapsize" ) ) {
2556 lmCustomSize = atoi( argv[ i + 1 ] );
2558 /* must be a power of 2 and greater than 2 */
2559 if ( ( ( lmCustomSize - 1 ) & lmCustomSize ) || lmCustomSize < 2 ) {
2560 Sys_FPrintf( SYS_WRN, "WARNING: Lightmap size must be a power of 2, greater or equal to 2 pixels.\n" );
2561 lmCustomSize = game->lightmapSize;
2564 Sys_Printf( "Default lightmap size set to %d x %d pixels\n", lmCustomSize, lmCustomSize );
2566 /* enable external lightmaps */
2567 if ( lmCustomSize != game->lightmapSize ) {
2568 externalLightmaps = qtrue;
2569 Sys_Printf( "Storing all lightmaps externally\n" );
2573 else if ( !strcmp( argv[ i ], "-rawlightmapsizelimit" ) ) {
2574 lmLimitSize = atoi( argv[ i + 1 ] );
2577 Sys_Printf( "Raw lightmap size limit set to %d x %d pixels\n", lmLimitSize, lmLimitSize );
2580 else if ( !strcmp( argv[ i ], "-lightmapdir" ) ) {
2581 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 ], "-nobouncestore" ) ) {
2628 noBounceStore = qtrue;
2629 Sys_Printf( "Do not store BSP, lightmap and shader files between bounces\n" );
2632 else if ( !strcmp( argv[ i ], "-nocollapse" ) ) {
2634 Sys_Printf( "Identical lightmap collapsing disabled\n" );
2637 else if ( !strcmp( argv[ i ], "-nolightmapsearch" ) ) {
2638 lightmapSearchBlockSize = 1;
2639 Sys_Printf( "No lightmap searching - all lightmaps will be sequential\n" );
2642 else if ( !strcmp( argv[ i ], "-lightmapsearchpower" ) ) {
2643 lightmapMergeSize = ( game->lightmapSize << atoi( argv[i + 1] ) );
2645 Sys_Printf( "Restricted lightmap searching enabled - optimize for lightmap merge power %d (size %d)\n", atoi( argv[i] ), lightmapMergeSize );
2648 else if ( !strcmp( argv[ i ], "-lightmapsearchblocksize" ) ) {
2649 lightmapSearchBlockSize = atoi( argv[i + 1] );
2651 Sys_Printf( "Restricted lightmap searching enabled - block size set to %d\n", lightmapSearchBlockSize );
2654 else if ( !strcmp( argv[ i ], "-shade" ) ) {
2656 Sys_Printf( "Phong shading enabled\n" );
2659 else if ( !strcmp( argv[ i ], "-bouncegrid" ) ) {
2662 Sys_Printf( "Grid lighting with radiosity enabled\n" );
2666 else if ( !strcmp( argv[ i ], "-smooth" ) ) {
2667 lightSamples = EXTRA_SCALE;
2668 Sys_Printf( "The -smooth argument is deprecated, use \"-samples 2\" instead\n" );
2671 else if ( !strcmp( argv[ i ], "-nofastpoint" ) ) {
2673 Sys_Printf( "Automatic fast mode for point lights disabled\n" );
2676 else if ( !strcmp( argv[ i ], "-fast" ) ) {
2680 Sys_Printf( "Fast mode enabled for all area lights\n" );
2683 else if ( !strcmp( argv[ i ], "-faster" ) ) {
2688 Sys_Printf( "Faster mode enabled\n" );
2691 else if ( !strcmp( argv[ i ], "-fastallocate" ) || !strcmp( argv[ i ], "-fastlightmapsearch" ) ) {
2692 fastAllocate = qtrue;
2694 if ( !strcmp( argv[ i ], "-fastlightmapsearch" ) ) {
2695 Sys_Printf( "The -fastlightmapsearch argument is deprecated, use \"-fastallocate\" instead\n" );
2698 Sys_Printf( "Fast lightmap allocation mode enabled\n" );
2702 else if ( !strcmp( argv[ i ], "-slowallocate" ) ) {
2703 fastAllocate = qfalse;
2704 Sys_Printf( "Slow lightmap allocation mode enabled (default)\n" );
2707 else if ( !strcmp( argv[ i ], "-fastgrid" ) ) {
2709 Sys_Printf( "Fast grid lighting enabled\n" );
2712 else if ( !strcmp( argv[ i ], "-fastbounce" ) ) {
2714 Sys_Printf( "Fast bounce mode enabled\n" );
2717 else if ( !strcmp( argv[ i ], "-cheap" ) ) {
2720 Sys_Printf( "Cheap mode enabled\n" );
2723 else if ( !strcmp( argv[ i ], "-cheapgrid" ) ) {
2725 Sys_Printf( "Cheap grid mode enabled\n" );
2728 else if ( !strcmp( argv[ i ], "-normalmap" ) ) {
2730 Sys_Printf( "Storing normal map instead of lightmap\n" );
2733 else if ( !strcmp( argv[ i ], "-trisoup" ) ) {
2735 Sys_Printf( "Converting brush faces to triangle soup\n" );
2738 else if ( !strcmp( argv[ i ], "-debug" ) ) {
2740 Sys_Printf( "Lightmap debugging enabled\n" );
2743 else if ( !strcmp( argv[ i ], "-debugsurfaces" ) || !strcmp( argv[ i ], "-debugsurface" ) ) {
2744 debugSurfaces = qtrue;
2745 Sys_Printf( "Lightmap surface debugging enabled\n" );
2748 else if ( !strcmp( argv[ i ], "-debugunused" ) ) {
2749 debugUnused = qtrue;
2750 Sys_Printf( "Unused luxel debugging enabled\n" );
2753 else if ( !strcmp( argv[ i ], "-debugaxis" ) ) {
2755 Sys_Printf( "Lightmap axis debugging enabled\n" );
2758 else if ( !strcmp( argv[ i ], "-debugcluster" ) ) {
2759 debugCluster = qtrue;
2760 Sys_Printf( "Luxel cluster debugging enabled\n" );
2763 else if ( !strcmp( argv[ i ], "-debugorigin" ) ) {
2764 debugOrigin = qtrue;
2765 Sys_Printf( "Luxel origin debugging enabled\n" );
2768 else if ( !strcmp( argv[ i ], "-debugdeluxe" ) ) {
2770 debugDeluxemap = qtrue;
2771 Sys_Printf( "Deluxemap debugging enabled\n" );
2774 else if ( !strcmp( argv[ i ], "-export" ) ) {
2775 exportLightmaps = qtrue;
2776 Sys_Printf( "Exporting lightmaps\n" );
2779 else if ( !strcmp( argv[ i ], "-notrace" ) ) {
2781 Sys_Printf( "Shadow occlusion disabled\n" );
2783 else if ( !strcmp( argv[ i ], "-patchshadows" ) ) {
2784 patchShadows = qtrue;
2785 Sys_Printf( "Patch shadow casting enabled\n" );
2787 else if ( !strcmp( argv[ i ], "-extra" ) ) {
2788 superSample = EXTRA_SCALE; /* ydnar */
2789 Sys_Printf( "The -extra argument is deprecated, use \"-super 2\" instead\n" );
2791 else if ( !strcmp( argv[ i ], "-extrawide" ) ) {
2792 superSample = EXTRAWIDE_SCALE; /* ydnar */
2793 filter = qtrue; /* ydnar */
2794 Sys_Printf( "The -extrawide argument is deprecated, use \"-filter [-super 2]\" instead\n" );
2796 else if ( !strcmp( argv[ i ], "-samplesize" ) ) {
2797 sampleSize = atoi( argv[ i + 1 ] );
2798 if ( sampleSize < 1 ) {
2802 Sys_Printf( "Default lightmap sample size set to %dx%d units\n", sampleSize, sampleSize );
2804 else if ( !strcmp( argv[ i ], "-minsamplesize" ) ) {
2805 minSampleSize = atoi( argv[ i + 1 ] );
2806 if ( minSampleSize < 1 ) {
2810 Sys_Printf( "Minimum lightmap sample size set to %dx%d units\n", minSampleSize, minSampleSize );
2812 else if ( !strcmp( argv[ i ], "-samplescale" ) ) {
2813 sampleScale = atoi( argv[ i + 1 ] );
2815 Sys_Printf( "Lightmaps sample scale set to %d\n", sampleScale );
2817 else if ( !strcmp( argv[ i ], "-novertex" ) ) {
2818 noVertexLighting = qtrue;
2819 Sys_Printf( "Disabling vertex lighting\n" );
2821 else if ( !strcmp( argv[ i ], "-nogrid" ) ) {
2822 noGridLighting = qtrue;
2823 Sys_Printf( "Disabling grid lighting\n" );
2825 else if ( !strcmp( argv[ i ], "-border" ) ) {
2826 lightmapBorder = qtrue;
2827 Sys_Printf( "Adding debug border to lightmaps\n" );
2829 else if ( !strcmp( argv[ i ], "-nosurf" ) ) {
2831 Sys_Printf( "Not tracing against surfaces\n" );
2833 else if ( !strcmp( argv[ i ], "-dump" ) ) {
2835 Sys_Printf( "Dumping radiosity lights into numbered prefabs\n" );
2837 else if ( !strcmp( argv[ i ], "-lomem" ) ) {
2839 Sys_Printf( "Enabling low-memory (potentially slower) lighting mode\n" );
2841 else if ( !strcmp( argv[ i ], "-lightsubdiv" ) ) {
2842 defaultLightSubdivide = atoi( argv[ i + 1 ] );
2843 if ( defaultLightSubdivide < 1 ) {
2844 defaultLightSubdivide = 1;
2847 Sys_Printf( "Default light subdivision set to %d\n", defaultLightSubdivide );
2849 else if ( !strcmp( argv[ i ], "-lightanglehl" ) ) {
2850 if ( ( atoi( argv[ i + 1 ] ) != 0 ) != lightAngleHL ) {
2851 lightAngleHL = ( atoi( argv[ i + 1 ] ) != 0 );
2852 if ( lightAngleHL ) {
2853 Sys_Printf( "Enabling half lambert light angle attenuation\n" );
2856 Sys_Printf( "Disabling half lambert light angle attenuation\n" );
2861 else if ( !strcmp( argv[ i ], "-nostyle" ) || !strcmp( argv[ i ], "-nostyles" ) ) {
2863 Sys_Printf( "Disabling lightstyles\n" );
2865 else if ( !strcmp( argv[ i ], "-style" ) || !strcmp( argv[ i ], "-styles" ) ) {
2867 Sys_Printf( "Enabling lightstyles\n" );
2869 else if ( !strcmp( argv[ i ], "-cpma" ) ) {
2871 Sys_Printf( "Enabling Challenge Pro Mode Asstacular Vertex Lighting Mode (tm)\n" );
2873 else if ( !strcmp( argv[ i ], "-floodlight" ) ) {
2874 floodlighty = qtrue;
2875 Sys_Printf( "FloodLighting enabled\n" );
2877 else if ( !strcmp( argv[ i ], "-debugnormals" ) ) {
2878 debugnormals = qtrue;
2879 Sys_Printf( "DebugNormals enabled\n" );
2881 else if ( !strcmp( argv[ i ], "-lowquality" ) ) {
2882 floodlight_lowquality = qtrue;
2883 Sys_Printf( "Low Quality FloodLighting enabled\n" );
2886 /* r7: dirtmapping */
2887 else if ( !strcmp( argv[ i ], "-dirty" ) ) {
2889 Sys_Printf( "Dirtmapping enabled\n" );
2891 else if ( !strcmp( argv[ i ], "-dirtdebug" ) || !strcmp( argv[ i ], "-debugdirt" ) ) {
2893 Sys_Printf( "Dirtmap debugging enabled\n" );
2895 else if ( !strcmp( argv[ i ], "-dirtmode" ) ) {
2896 dirtMode = atoi( argv[ i + 1 ] );
2897 if ( dirtMode != 0 && dirtMode != 1 ) {
2900 if ( dirtMode == 1 ) {
2901 Sys_Printf( "Enabling randomized dirtmapping\n" );
2904 Sys_Printf( "Enabling ordered dir mapping\n" );
2908 else if ( !strcmp( argv[ i ], "-dirtdepth" ) ) {
2909 dirtDepth = atof( argv[ i + 1 ] );
2910 if ( dirtDepth <= 0.0f ) {
2913 Sys_Printf( "Dirtmapping depth set to %.1f\n", dirtDepth );
2916 else if ( !strcmp( argv[ i ], "-dirtscale" ) ) {
2917 dirtScale = atof( argv[ i + 1 ] );
2918 if ( dirtScale <= 0.0f ) {
2921 Sys_Printf( "Dirtmapping scale set to %.1f\n", dirtScale );
2924 else if ( !strcmp( argv[ i ], "-dirtgain" ) ) {
2925 dirtGain = atof( argv[ i + 1 ] );
2926 if ( dirtGain <= 0.0f ) {
2929 Sys_Printf( "Dirtmapping gain set to %.1f\n", dirtGain );
2932 else if ( !strcmp( argv[ i ], "-trianglecheck" ) ) {
2933 lightmapTriangleCheck = qtrue;
2935 else if ( !strcmp( argv[ i ], "-extravisnudge" ) ) {
2936 lightmapExtraVisClusterNudge = qtrue;
2938 else if ( !strcmp( argv[ i ], "-fill" ) ) {
2939 lightmapFill = qtrue;
2940 Sys_Printf( "Filling lightmap colors from surrounding pixels to improve JPEG compression\n" );
2942 else if ( !strcmp( argv[ i ], "-bspfile" ) )
2944 strcpy( BSPFilePath, argv[i + 1] );
2948 Sys_Printf( "Use %s as bsp file\n", BSPFilePath );
2950 else if ( !strcmp( argv[ i ], "-srffile" ) )
2952 strcpy( surfaceFilePath, argv[i + 1] );
2956 Sys_Printf( "Use %s as surface file\n", surfaceFilePath );
2958 /* unhandled args */
2961 Sys_FPrintf( SYS_WRN, "WARNING: Unknown argument \"%s\"\n", argv[ i ] );
2966 /* fix up falloff tolerance for sRGB */
2967 if ( lightmapsRGB ) {
2968 falloffTolerance = Image_LinearFloatFromsRGBFloat( falloffTolerance * ( 1.0 / 255.0 ) ) * 255.0;
2971 /* fix up samples count */
2972 if ( lightRandomSamples ) {
2973 if ( !lightSamplesInsist ) {
2974 /* approximately match -samples in quality */
2975 switch ( lightSamples )
2981 Sys_Printf( "Adaptive supersampling preset enabled with %d random sample(s) per lightmap texel\n", lightSamples );
2987 Sys_Printf( "Adaptive supersampling preset enabled with %d random sample(s) per lightmap texel\n", lightSamples );
2993 Sys_Printf( "Adaptive supersampling preset enabled with %d random sample(s) per lightmap texel\n", lightSamples );
3001 /* fix up lightmap search power */
3002 if ( lightmapMergeSize ) {
3003 lightmapSearchBlockSize = ( lightmapMergeSize / lmCustomSize ) * ( lightmapMergeSize / lmCustomSize );
3004 if ( lightmapSearchBlockSize < 1 ) {
3005 lightmapSearchBlockSize = 1;
3008 Sys_Printf( "Restricted lightmap searching enabled - block size adjusted to %d\n", lightmapSearchBlockSize );
3012 if ( i != ( argc - 1 ) ) {
3013 Error( "usage: q3map -light [options] <bspfile>" );
3016 strcpy( source, ExpandArg( argv[ i ] ) );
3017 StripExtension( source );
3018 DefaultExtension( source, ".map" );
3020 if (!BSPFilePath[0]) {
3021 strcpy( BSPFilePath, ExpandArg( argv[ i ] ) );
3022 StripExtension( BSPFilePath );
3023 DefaultExtension( BSPFilePath, ".bsp" );
3026 if (!surfaceFilePath[0]) {
3027 strcpy( surfaceFilePath, ExpandArg( argv[ i ] ) );
3028 StripExtension( surfaceFilePath );
3029 DefaultExtension( surfaceFilePath, ".srf" );
3032 /* ydnar: set default sample size */
3033 SetDefaultSampleSize( sampleSize );
3035 /* ydnar: handle shaders */
3036 BeginMapShaderFile( BSPFilePath );
3040 Sys_Printf( "Loading %s\n", source );
3042 /* ydnar: load surface file */
3043 LoadSurfaceExtraFile( surfaceFilePath );
3046 LoadBSPFile( BSPFilePath );
3048 /* parse bsp entities */
3051 /* inject command line parameters */
3052 InjectCommandLine( argv, 0, argc - 1 );
3055 value = ValueForKey( &entities[ 0 ], "_keepLights" );
3056 if ( value[ 0 ] != '1' ) {
3057 LoadMapFile( source, qtrue, qfalse );
3060 /* set the entity/model origins and init yDrawVerts */
3063 /* ydnar: set up optimization */
3067 SetupSurfaceLightmaps();
3069 /* initialize the surface facet tracing */
3072 /* light the world */
3073 LightWorld( BSPFilePath, fastAllocate, noBounceStore );
3075 /* write out the bsp */
3077 Sys_Printf( "Writing %s\n", BSPFilePath );
3078 WriteBSPFile( BSPFilePath );
3080 /* ydnar: export lightmaps */
3081 if ( exportLightmaps && !externalLightmaps ) {
3085 /* return to sender */