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deluxemapping: ignore light contribution from the other side of a surface

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This commit is contained in:
Rudolf Polzer 2010-09-22 07:17:33 +02:00
parent 4243255b4a
commit 1ec2aec67e
1 changed files with 31 additions and 7 deletions
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38
tools/quake3/q3map2/light.c
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@ -750,8 +750,9 @@ int LightContributionToSample( trace_t *trace )
float add;
float dist;
float addDeluxe = 0.0f, addDeluxeBounceScale = 0.25f;
qboolean angledDeluxe = qfalse;
qboolean angledDeluxe = qtrue;
float colorBrightness;
qboolean doAddDeluxe = qtrue;
/* get light */
light = trace->light;
@ -821,7 +822,12 @@ int LightContributionToSample( trace_t *trace )
/* twosided lighting */
if( trace->twoSided )
angle = fabs( angle );
{
angle = -angle;
/* no deluxemap contribution from "other side" light */
doAddDeluxe = qfalse;
}
/* attenuate */
angle *= -DotProduct( light->normal, trace->direction );
@ -864,6 +870,9 @@ int LightContributionToSample( trace_t *trace )
dist = SetupTrace( trace );
if( dist >= light->envelope )
return 0;
/* no deluxemap contribution from "other side" light */
doAddDeluxe = qfalse;
}
else
return 0;
@ -898,8 +907,13 @@ int LightContributionToSample( trace_t *trace )
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 )
@ -1010,8 +1024,13 @@ int LightContributionToSample( trace_t *trace )
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 )
@ -1108,11 +1127,16 @@ int LightContributionToSample( trace_t *trace )
if( bouncing )
{
addDeluxe *= addDeluxeBounceScale;
/* better NOT increase it beyond the original value
if( addDeluxe < 0.00390625f )
addDeluxe = 0.00390625f;
*/
}
VectorScale( trace->direction, addDeluxe, trace->directionContribution );
if(doAddDeluxe)
{
VectorScale( trace->direction, addDeluxe, trace->directionContribution );
}
/* setup trace */
trace->testAll = qfalse;