else
light->color[ 0 ] = light->color[ 1 ] = light->color[ 2 ] = 1.0f;
+ light->extraDist = FloatForKey( e, "_extradist" );
+ if(light->extraDist == 0.0f)
+ light->extraDist = extraDist;
+
intensity = intensity * pointScale;
light->photons = intensity;
float angle;
float add;
float dist;
-
+ float addDeluxe = 0.0f, addDeluxeBounceScale = 0.25f;
+ qboolean angledDeluxe = qfalse;
+ float colorBrightness;
/* get light */
light = trace->light;
/* clear color */
VectorClear( trace->color );
VectorClear( trace->colorNoShadow );
+ VectorClear( trace->directionContribution );
+
+ colorBrightness = RGBTOGRAY( light->color ) * ( 1.0f/255.0f );
/* ydnar: early out */
if( !(light->flags & LIGHT_SURFACES) || light->envelope <= 0.0f )
}
/* nudge the point so that it is clearly forward of the light */
- /* so that surfaces meeting a light emiter don't get black edges */
+ /* so that surfaces meeting a light emitter don't get black edges */
if( d > -8.0f && d < 8.0f )
VectorMA( trace->origin, (8.0f - d), light->normal, pushedOrigin );
else
else if( angle < 0.0f &&
(trace->twoSided || (light->flags & LIGHT_TWOSIDED)) )
angle = -angle;
+
+ /* clamp the distance to prevent super hot spots */
+ dist = sqrt(dist * dist + light->extraDist * light->extraDist);
+ if( dist < 16.0f )
+ dist = 16.0f;
+
add = light->photons / (dist * dist) * angle;
+
+ if( deluxemap )
+ {
+ if( angledDeluxe )
+ addDeluxe = light->photons / (dist * dist) * angle;
+ else
+ addDeluxe = light->photons / (dist * dist);
+ }
}
else
{
/* ydnar: moved to here */
add = factor * light->add;
+
+ if( deluxemap )
+ addDeluxe = add;
}
}
dist = SetupTrace( trace );
if( dist >= light->envelope )
return 0;
-
+
/* clamp the distance to prevent super hot spots */
+ dist = sqrt(dist * dist + light->extraDist * light->extraDist);
if( dist < 16.0f )
dist = 16.0f;
-
+
/* angle attenuation */
- angle = (light->flags & LIGHT_ATTEN_ANGLE) ? DotProduct( trace->normal, trace->direction ) : 1.0f;
+ if( light->flags & LIGHT_ATTEN_ANGLE )
+ {
+ /* standard Lambert attenuation */
+ float dot = DotProduct( trace->normal, trace->direction );
+
+ /* twosided lighting */
+ if( trace->twoSided )
+ dot = fabs( dot );
+
+ /* jal: optional half Lambert attenuation (http://developer.valvesoftware.com/wiki/Half_Lambert) */
+ if( lightAngleHL )
+ {
+ if( dot > 0.001f ) // skip coplanar
+ {
+ if( dot > 1.0f ) dot = 1.0f;
+ dot = ( dot * 0.5f ) + 0.5f;
+ dot *= dot;
+ }
+ else
+ dot = 0;
+ }
+
+ angle = dot;
+ }
+ else
+ angle = 1.0f;
+
if( light->angleScale != 0.0f )
{
angle /= light->angleScale;
angle = 1.0f;
}
- /* twosided lighting */
- if( trace->twoSided )
- angle = fabs( angle );
-
/* attenuate */
if( light->flags & LIGHT_ATTEN_LINEAR )
{
add = angle * light->photons * linearScale - (dist * light->fade);
if( add < 0.0f )
add = 0.0f;
+
+ if( deluxemap )
+ {
+ if( angledDeluxe )
+ addDeluxe = angle * light->photons * linearScale - (dist * light->fade);
+ else
+ addDeluxe = light->photons * linearScale - (dist * light->fade);
+
+ if( addDeluxe < 0.0f )
+ addDeluxe = 0.0f;
+ }
}
else
- add = light->photons / (dist * dist) * angle;
+ {
+ add = (light->photons / (dist * dist)) * angle;
+ if( add < 0.0f )
+ add = 0.0f;
+
+ if( deluxemap )
+ {
+ if( angledDeluxe )
+ addDeluxe = (light->photons / (dist * dist)) * angle;
+ else
+ addDeluxe = (light->photons / (dist * dist));
+ }
+
+ if( addDeluxe < 0.0f )
+ addDeluxe = 0.0f;
+ }
/* handle spotlights */
if( light->type == EMIT_SPOT )
/* attenuate */
if( sampleRadius > (radiusAtDist - 32.0f) )
+ {
add *= ((radiusAtDist - sampleRadius) / 32.0f);
+ if( add < 0.0f )
+ add = 0.0f;
+
+ addDeluxe *= ((radiusAtDist - sampleRadius) / 32.0f);
+
+ if( addDeluxe < 0.0f )
+ addDeluxe = 0.0f;
+ }
}
}
/* get origin and direction */
VectorAdd( trace->origin, light->origin, trace->end );
dist = SetupTrace( trace );
-
+
/* angle attenuation */
- angle = (light->flags & LIGHT_ATTEN_ANGLE)
- ? DotProduct( trace->normal, trace->direction )
- : 1.0f;
-
- /* twosided lighting */
- if( trace->twoSided )
- angle = fabs( angle );
+ if( light->flags & LIGHT_ATTEN_ANGLE )
+ {
+ /* standard Lambert attenuation */
+ float dot = DotProduct( trace->normal, trace->direction );
+
+ /* twosided lighting */
+ if( trace->twoSided )
+ dot = fabs( dot );
+
+ /* jal: optional half Lambert attenuation (http://developer.valvesoftware.com/wiki/Half_Lambert) */
+ if( lightAngleHL )
+ {
+ if( dot > 0.001f ) // skip coplanar
+ {
+ if( dot > 1.0f ) dot = 1.0f;
+ dot = ( dot * 0.5f ) + 0.5f;
+ dot *= dot;
+ }
+ else
+ dot = 0;
+ }
+
+ angle = dot;
+ }
+ else
+ angle = 1.0f;
/* attenuate */
add = light->photons * angle;
+
+ if( deluxemap )
+ {
+ if( angledDeluxe )
+ addDeluxe = light->photons * angle;
+ else
+ addDeluxe = light->photons;
+
+ if( addDeluxe < 0.0f )
+ addDeluxe = 0.0f;
+ }
+
if( add <= 0.0f )
return 0;
/* VorteX: set noShadow color */
VectorScale(light->color, add, trace->colorNoShadow);
+
+ addDeluxe *= colorBrightness;
+
+ if( bouncing )
+ {
+ addDeluxe *= addDeluxeBounceScale;
+ if( addDeluxe < 0.00390625f )
+ addDeluxe = 0.00390625f;
+ }
+
+ VectorScale( trace->direction, addDeluxe, trace->directionContribution );
/* setup trace */
trace->testAll = qtrue;
if( !(trace->compileFlags & C_SKY) || trace->opaque )
{
VectorClear( trace->color );
+ VectorClear( trace->directionContribution );
+
return -1;
}
}
/* ydnar: changed to a variable number */
if( add <= 0.0f || (add <= light->falloffTolerance && (light->flags & LIGHT_FAST_ACTUAL)) )
return 0;
+
+ addDeluxe *= colorBrightness;
+
+ /* hack land: scale down the radiosity contribution to light directionality.
+ Deluxemaps fusion many light directions into one. In a rtl process all lights
+ would contribute individually to the bump map, so several light sources together
+ would make it more directional (example: a yellow and red lights received from
+ opposing sides would light one side in red and the other in blue, adding
+ the effect of 2 directions applied. In the deluxemapping case, this 2 lights would
+ neutralize each other making it look like having no direction.
+ Same thing happens with radiosity. In deluxemapping case the radiosity contribution
+ is modifying the direction applied from directional lights, making it go closer and closer
+ to the surface normal the bigger is the amount of radiosity received.
+ So, for preserving the directional lights contributions, we scale down the radiosity
+ contribution. It's a hack, but there's a reason behind it */
+ if( bouncing )
+ {
+ addDeluxe *= addDeluxeBounceScale;
+ if( addDeluxe < 0.00390625f )
+ addDeluxe = 0.00390625f;
+ }
+
+ VectorScale( trace->direction, addDeluxe, trace->directionContribution );
/* setup trace */
trace->testAll = qfalse;
if( trace->passSolid || trace->opaque )
{
VectorClear( trace->color );
+ VectorClear( trace->directionContribution );
+
return -1;
}
if( light->type == EMIT_AREA && faster )
{
/* clamp the distance to prevent super hot spots */
+ dist = sqrt(dist * dist + light->extraDist * light->extraDist);
if( dist < 16.0f )
dist = 16.0f;
-
+
/* attenuate */
add = light->photons / (dist * dist);
}
else if( light->type == EMIT_POINT || light->type == EMIT_SPOT )
{
/* clamp the distance to prevent super hot spots */
+ dist = sqrt(dist * dist + light->extraDist * light->extraDist);
if( dist < 16.0f )
dist = 16.0f;
of dynamically placed entities in the world
*/
-#define MAX_CONTRIBUTIONS 1024
+#define MAX_CONTRIBUTIONS 32768
typedef struct
{
vec3_t dir;
vec3_t color;
+ vec3_t ambient;
int style;
}
contribution_t;
void TraceGrid( int num )
{
- int i, j, x, y, z, mod, step, numCon, numStyles;
- float d;
- vec3_t baseOrigin, cheapColor, color;
+ int i, j, x, y, z, mod, numCon, numStyles;
+ float d, step;
+ vec3_t baseOrigin, cheapColor, color, thisdir;
rawGridPoint_t *gp;
bspGridPoint_t *bgp;
contribution_t contributions[ MAX_CONTRIBUTIONS ];
trace_t trace;
-
/* get grid points */
gp = &rawGridPoints[ num ];
bgp = &bspGridPoints[ num ];
{
/* try to nudge the origin around to find a valid point */
VectorCopy( trace.origin, baseOrigin );
- for( step = 9; step <= 18; step += 9 )
+ for( step = 0; (step += 0.005) <= 1.0; )
{
- for( i = 0; i < 8; i++ )
- {
- VectorCopy( baseOrigin, trace.origin );
- if( i & 1 )
- trace.origin[ 0 ] += step;
- else
- trace.origin[ 0 ] -= step;
+ VectorCopy( baseOrigin, trace.origin );
+ trace.origin[ 0 ] += step * (Random() - 0.5) * gridSize[0];
+ trace.origin[ 1 ] += step * (Random() - 0.5) * gridSize[1];
+ trace.origin[ 2 ] += step * (Random() - 0.5) * gridSize[2];
- if( i & 2 )
- trace.origin[ 1 ] += step;
- else
- trace.origin[ 1 ] -= step;
-
- if( i & 4 )
- trace.origin[ 2 ] += step;
- else
- trace.origin[ 2 ] -= step;
-
- /* ydnar: changed to find cluster num */
- trace.cluster = ClusterForPointExt( trace.origin, VERTEX_EPSILON );
- if( trace.cluster >= 0 )
- break;
- }
-
- if( i != 8 )
+ /* ydnar: changed to find cluster num */
+ trace.cluster = ClusterForPointExt( trace.origin, VERTEX_EPSILON );
+ if( trace.cluster >= 0 )
break;
}
/* can't find a valid point at all */
- if( step > 18 )
+ if( step > 1.0 )
return;
}
/* add a contribution */
VectorCopy( trace.color, contributions[ numCon ].color );
VectorCopy( trace.direction, contributions[ numCon ].dir );
+ VectorClear( contributions[ numCon ].ambient );
contributions[ numCon ].style = trace.light->style;
numCon++;
/////// Floodlighting for point //////////////////
//do our floodlight ambient occlusion loop, and add a single contribution based on the brightest dir
- if (floodlighty)
- {
- int q;
- float addSize,f;
- vec3_t col,dir;
- col[0]=col[1]=col[2]=floodlightIntensity;
- dir[0]=dir[1]=0;
- dir[2]=1;
-
- trace.testOcclusion = qtrue;
- trace.forceSunlight = qfalse;
- trace.inhibitRadius = DEFAULT_INHIBIT_RADIUS;
- trace.testAll = qtrue;
-
- for (q=0;q<2;q++)
- {
- if (q==0) //upper hemisphere
- {
- trace.normal[0]=0;
- trace.normal[1]=0;
- trace.normal[2]=1;
- }
- else //lower hemisphere
- {
- trace.normal[0]=0;
- trace.normal[1]=0;
- trace.normal[2]=-1;
- }
-
- f = FloodLightForSample(&trace, floodlightDistance, floodlight_lowquality);
-
- contributions[ numCon ].color[0]=col[0]*f;
- contributions[ numCon ].color[1]=col[1]*f;
- contributions[ numCon ].color[2]=col[2]*f;
-
- contributions[ numCon ].dir[0]=dir[0];
- contributions[ numCon ].dir[1]=dir[1];
- contributions[ numCon ].dir[2]=dir[2];
-
- contributions[ numCon ].style = 0;
- numCon++;
- /* push average direction around */
- addSize = VectorLength( col );
- VectorMA( gp->dir, addSize, dir, gp->dir );
- }
+ if( floodlighty )\r
+ {\r
+ int k;\r
+ float addSize, f;\r
+ vec3_t dir = { 0, 0, 1 };\r
+ float ambientFrac = 0.25f;\r
+\r
+ trace.testOcclusion = qtrue;\r
+ trace.forceSunlight = qfalse;\r
+ trace.inhibitRadius = DEFAULT_INHIBIT_RADIUS;\r
+ trace.testAll = qtrue;\r
+\r
+ for( k = 0; k < 2; k++ )\r
+ {\r
+ if( k == 0 ) // upper hemisphere\r
+ {\r
+ trace.normal[0] = 0;\r
+ trace.normal[1] = 0;\r
+ trace.normal[2] = 1;\r
+ }\r
+ else //lower hemisphere\r
+ {\r
+ trace.normal[0] = 0;\r
+ trace.normal[1] = 0;\r
+ trace.normal[2] = -1;\r
+ }\r
+\r
+ f = FloodLightForSample( &trace, floodlightDistance, floodlight_lowquality );\r
+\r
+ /* add a fraction as pure ambient, half as top-down direction */\r
+ contributions[ numCon ].color[0]= floodlightRGB[0] * floodlightIntensity * f * ( 1.0f - ambientFrac );\r
+ contributions[ numCon ].color[1]= floodlightRGB[1] * floodlightIntensity * f * ( 1.0f - ambientFrac );\r
+ contributions[ numCon ].color[2]= floodlightRGB[2] * floodlightIntensity * f * ( 1.0f - ambientFrac );\r
+\r
+ contributions[ numCon ].ambient[0]= floodlightRGB[0] * floodlightIntensity * f * ambientFrac;\r
+ contributions[ numCon ].ambient[1]= floodlightRGB[1] * floodlightIntensity * f * ambientFrac;\r
+ contributions[ numCon ].ambient[2]= floodlightRGB[2] * floodlightIntensity * f * ambientFrac;\r
+\r
+ contributions[ numCon ].dir[0] = dir[0];\r
+ contributions[ numCon ].dir[1] = dir[1];\r
+ contributions[ numCon ].dir[2] = dir[2];\r
+\r
+ contributions[ numCon ].style = 0;\r
+\r
+ /* push average direction around */\r
+ addSize = VectorLength( contributions[ numCon ].color );\r
+ VectorMA( gp->dir, addSize, dir, gp->dir );\r
+\r
+ numCon++;\r
+ }\r
}
/////////////////////
/* normalize to get primary light direction */
- VectorNormalize( gp->dir, gp->dir );
+ VectorNormalize( gp->dir, thisdir );
/* now that we have identified the primary light direction,
go back and separate all the light into directed and ambient */
+
numStyles = 1;
for( i = 0; i < numCon; i++ )
{
/* get relative directed strength */
- d = DotProduct( contributions[ i ].dir, gp->dir );
+ d = DotProduct( contributions[ i ].dir, thisdir );
+ /* we map 1 to gridDirectionality, and 0 to gridAmbientDirectionality */
+ d = gridAmbientDirectionality + d * (gridDirectionality - gridAmbientDirectionality);
if( d < 0.0f )
d = 0.0f;
/* (Hobbes: always setting it to .25 is hardly any better) */
d = 0.25f * (1.0f - d);
VectorMA( gp->ambient[ j ], d, contributions[ i ].color, gp->ambient[ j ] );
+
+ VectorAdd( gp->ambient[ j ], contributions[ i ].ambient, gp->ambient[ j ] );
+
+/*
+ * div0:
+ * the total light average = ambient value + 0.25 * sum of all directional values
+ * we can also get the total light average as 0.25 * the sum of all contributions
+ *
+ * 0.25 * sum(contribution_i) == ambient + 0.25 * sum(d_i contribution_i)
+ *
+ * THIS YIELDS:
+ * ambient == 0.25 * sum((1 - d_i) contribution_i)
+ *
+ * So, 0.25f * (1.0f - d) IS RIGHT. If you want to tune it, tune d BEFORE.
+ */
}
/* store off sample */
for( i = 0; i < MAX_LIGHTMAPS; i++ )
{
+#if 0
/* do some fudging to keep the ambient from being too low (2003-07-05: 0.25 -> 0.125) */
if( !bouncing )
VectorMA( gp->ambient[ i ], 0.125f, gp->directed[ i ], gp->ambient[ i ] );
+#endif
/* set minimum light and copy off to bytes */
VectorCopy( gp->ambient[ i ], color );
#endif
/* store direction */
- if( !bouncing )
- NormalToLatLong( gp->dir, bgp->latLong );
+ NormalToLatLong( thisdir, bgp->latLong );
}
vec3_t color;
float f;
int b, bt;
- qboolean minVertex, minGrid;
+ qboolean minVertex, minGrid, ps;
const char *value;
SetupEnvelopes( qtrue, fastgrid );
Sys_Printf( "--- TraceGrid ---\n" );
+ inGrid = qtrue;
RunThreadsOnIndividual( numRawGridPoints, qtrue, TraceGrid );
+ inGrid = qfalse;
Sys_Printf( "%d x %d x %d = %d grid\n",
gridBounds[ 0 ], gridBounds[ 1 ], gridBounds[ 2 ], numBSPGridPoints );
if( dirty )
{
Sys_Printf( "--- DirtyRawLightmap ---\n" );
-
-
-
-
RunThreadsOnIndividual( numRawLightmaps, qtrue, DirtyRawLightmap );
}
gridBoundsCulled = 0;
Sys_Printf( "--- BounceGrid ---\n" );
+ inGrid = qtrue;
RunThreadsOnIndividual( numRawGridPoints, qtrue, TraceGrid );
+ inGrid = qfalse;
Sys_FPrintf( SYS_VRB, "%9d grid points envelope culled\n", gridEnvelopeCulled );
Sys_FPrintf( SYS_VRB, "%9d grid points bounds culled\n", gridBoundsCulled );
}
gridAmbientScale = game->gridAmbientScale;
Sys_Printf( " lightgrid ambient scale: %f\n", gridAmbientScale );
+ lightAngleHL = game->lightAngleHL;
+ if( lightAngleHL )
+ Sys_Printf( " half lambert light angle attenuation enabled \n" );
+
noStyles = game->noStyles;
if (noStyles == qtrue)
Sys_Printf( " shader lightstyles hack: disabled\n" );
gridAmbientScale *= f;
i++;
}
+
+ else if( !strcmp( argv[ i ], "-griddirectionality" ) )
+ {
+ f = atof( argv[ i + 1 ] );
+ if(f < 0) f = 0;
+ if(f > gridAmbientDirectionality) f = gridAmbientDirectionality;
+ Sys_Printf( "Grid directionality is %f\n", f );
+ gridDirectionality *= f;
+ i++;
+ }
+
+ else if( !strcmp( argv[ i ], "-gridambientdirectionality" ) )
+ {
+ f = atof( argv[ i + 1 ] );
+ if(f > gridDirectionality) f = gridDirectionality;
+ if(f > 1) f = 1;
+ Sys_Printf( "Grid ambient directionality is %f\n", f );
+ gridAmbientDirectionality *= f;
+ i++;
+ }
else if( !strcmp( argv[ i ], "-gamma" ) )
{
wolfLight = qfalse;
Sys_Printf( "Enabling Quake 3 lighting model (nonlinear default)\n" );
}
+
+ else if( !strcmp( argv[ i ], "-extradist" ) )
+ {
+ extraDist = atof( argv[ i + 1 ] );
+ if( extraDist < 0 )
+ extraDist = 0;
+ i++;
+ Sys_Printf( "Default extra radius set to %f units\n", extraDist );
+ }
else if( !strcmp( argv[ i ], "-sunonly" ) )
{
loMem = qtrue;
Sys_Printf( "Enabling low-memory (potentially slower) lighting mode\n" );
}
+ else if( !strcmp( argv[ i ], "-lightanglehl" ) )
+ {
+ if( ( atoi( argv[ i + 1 ] ) != 0 ) != lightAngleHL )
+ {
+ lightAngleHL = ( atoi( argv[ i + 1 ] ) != 0 );
+ if( lightAngleHL )
+ Sys_Printf( "Enabling half lambert light angle attenuation\n" );
+ else
+ Sys_Printf( "Disabling half lambert light angle attenuation\n" );
+ }
+ }
else if( !strcmp( argv[ i ], "-nostyle" ) || !strcmp( argv[ i ], "-nostyles" ) )
{
noStyles = qtrue;
projects / xonotic / netradiant.git / blobdiff