float angle;
float add;
float dist;
-
+ float addDeluxe = 0.0f, addDeluxeBounceScale = 0.25f;
+ qboolean angledDeluxe = qtrue;
+ float colorBrightness;
+ qboolean doAddDeluxe = qtrue;
/* get light */
light = trace->light;
/* clear color */
+ trace->forceSubsampling = 0.0f; /* to make sure */
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
angle = DotProduct( trace->normal, trace->direction );
/* twosided lighting */
- if( trace->twoSided )
- angle = fabs( angle );
+ if( trace->twoSided && angle < 0 )
+ {
+ angle = -angle;
+
+ /* no deluxemap contribution from "other side" light */
+ doAddDeluxe = qfalse;
+ }
/* attenuate */
angle *= -DotProduct( light->normal, trace->direction );
return 0;
else if( angle < 0.0f &&
(trace->twoSided || (light->flags & LIGHT_TWOSIDED)) )
+ {
angle = -angle;
+ /* no deluxemap contribution from "other side" light */
+ doAddDeluxe = qfalse;
+ }
+
/* 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
{
dist = SetupTrace( trace );
if( dist >= light->envelope )
return 0;
+
+ /* no deluxemap contribution from "other side" light */
+ doAddDeluxe = qfalse;
}
else
return 0;
}
+
+ /* also don't deluxe if the direction is on the wrong side */
+ if(DotProduct(trace->normal, trace->direction) < 0)
+ {
+ /* no deluxemap contribution from "other side" light */
+ doAddDeluxe = qfalse;
+ }
/* ydnar: moved to here */
add = factor * light->add;
+
+ if( deluxemap )
+ addDeluxe = add;
}
}
float dot = DotProduct( trace->normal, trace->direction );
/* twosided lighting */
- if( trace->twoSided )
- dot = fabs( dot );
+ if( trace->twoSided && dot < 0 )
+ {
+ dot = -dot;
+
+ /* no deluxemap contribution from "other side" light */
+ doAddDeluxe = qfalse;
+ }
/* jal: optional half Lambert attenuation (http://developer.valvesoftware.com/wiki/Half_Lambert) */
if( lightAngleHL )
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;
+ 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;
+ }
}
}
float dot = DotProduct( trace->normal, trace->direction );
/* twosided lighting */
- if( trace->twoSided )
- dot = fabs( dot );
+ if( trace->twoSided && dot < 0 )
+ {
+ dot = -dot;
+
+ /* no deluxemap contribution from "other side" light */
+ doAddDeluxe = qfalse;
+ }
/* jal: optional half Lambert attenuation (http://developer.valvesoftware.com/wiki/Half_Lambert) */
if( lightAngleHL )
/* 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;
{
/* trace */
TraceLine( trace );
+ trace->forceSubsampling *= add;
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;
+ /* better NOT increase it beyond the original value
+ if( addDeluxe < 0.00390625f )
+ addDeluxe = 0.00390625f;
+ */
+ }
+
+ if(doAddDeluxe)
+ {
+ VectorScale( trace->direction, addDeluxe, trace->directionContribution );
+ }
/* setup trace */
trace->testAll = qfalse;
/* raytrace */
TraceLine( trace );
+ trace->forceSubsampling *= add;
if( trace->passSolid || trace->opaque )
{
VectorClear( trace->color );
+ VectorClear( trace->directionContribution );
+
return -1;
}
{
vec3_t dir;
vec3_t color;
+ vec3_t ambient;
int style;
}
contribution_t;
/* 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)
+ 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;
+ int k;
+ float addSize, f;
+ vec3_t dir = { 0, 0, 1 };
+ float ambientFrac = 0.25f;
trace.testOcclusion = qtrue;
trace.forceSunlight = qfalse;
trace.inhibitRadius = DEFAULT_INHIBIT_RADIUS;
trace.testAll = qtrue;
- for (q=0;q<2;q++)
+ for( k = 0; k < 2; k++ )
{
- if (q==0) //upper hemisphere
+ if( k == 0 ) // upper hemisphere
{
- trace.normal[0]=0;
- trace.normal[1]=0;
- trace.normal[2]=1;
+ 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;
+ trace.normal[0] = 0;
+ trace.normal[1] = 0;
+ trace.normal[2] = -1;
}
- f = FloodLightForSample(&trace, floodlightDistance, floodlight_lowquality);
+ f = FloodLightForSample( &trace, floodlightDistance, floodlight_lowquality );
+
+ /* add a fraction as pure ambient, half as top-down direction */
+ contributions[ numCon ].color[0]= floodlightRGB[0] * floodlightIntensity * f * ( 1.0f - ambientFrac );
+ contributions[ numCon ].color[1]= floodlightRGB[1] * floodlightIntensity * f * ( 1.0f - ambientFrac );
+ contributions[ numCon ].color[2]= floodlightRGB[2] * floodlightIntensity * f * ( 1.0f - ambientFrac );
- contributions[ numCon ].color[0]=col[0]*f;
- contributions[ numCon ].color[1]=col[1]*f;
- contributions[ numCon ].color[2]=col[2]*f;
+ contributions[ numCon ].ambient[0]= floodlightRGB[0] * floodlightIntensity * f * ambientFrac;
+ contributions[ numCon ].ambient[1]= floodlightRGB[1] * floodlightIntensity * f * ambientFrac;
+ contributions[ numCon ].ambient[2]= floodlightRGB[2] * floodlightIntensity * f * ambientFrac;
- contributions[ numCon ].dir[0]=dir[0];
- contributions[ numCon ].dir[1]=dir[1];
- contributions[ numCon ].dir[2]=dir[2];
+ 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 );
+ addSize = VectorLength( contributions[ numCon ].color );
VectorMA( gp->dir, addSize, dir, gp->dir );
+
+ numCon++;
}
}
/////////////////////
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
i++;
}
+ else if( !strcmp( argv[ i ], "-samplessearchboxsize" ) )
+ {
+ lightSamplesSearchBoxSize = atoi( argv[ i + 1 ] );
+ if( lightSamplesSearchBoxSize <= 0 )
+ lightSamplesSearchBoxSize = 1;
+ if( lightSamplesSearchBoxSize > 4 )
+ lightSamplesSearchBoxSize = 4; /* more makes no sense */
+ else if( lightSamplesSearchBoxSize != 1 )
+ Sys_Printf( "Adaptive supersampling uses %f times the normal search box size\n", lightSamplesSearchBoxSize );
+ i++;
+ }
+
else if( !strcmp( argv[ i ], "-filter" ) )
{
filter = qtrue;
projects / xonotic / netradiant.git / blobdiff