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SL-10461 

Another attempt at getting approximage handling of projector ambiance in the alpha object shader.
This will not be a perfect match for non-transparent objects but should be close enough.
master
Graham Linden 2019-02-06 10:07:24 -08:00
parent e17756e700
commit f8171a909c
1 changed files with 4 additions and 4 deletions
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8
indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
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@ -86,9 +86,7 @@ vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 diffuse, vec3 v, vec3 n, vec
//get distance
float d = length(lv);
float da = 1.0;
vec3 col = vec3(0);
if (d > 0.0 && fa > 0.0)
@ -100,7 +98,7 @@ vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 diffuse, vec3 v, vec3 n, vec
da = max(0.0, dot(norm, lv));
//distance attenuation
float dist = d;
float dist = d/la;
float dist_atten = clamp(1.0-(dist-1.0*(1.0-fa))/fa, 0.0, 1.0);
dist_atten *= dist_atten;
dist_atten *= 2.0;
@ -109,9 +107,11 @@ vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 diffuse, vec3 v, vec3 n, vec
float spot = max(dot(-ln, lv), is_pointlight);
da *= spot*spot; // GL_SPOT_EXPONENT=2
// to match spotLight (but not multiSpotLight) *sigh*
float lit = max(da * dist_atten,0.0);
col = lit * light_col * diffuse;
float amb_da = (da*da*0.5 + 0.5) * ambiance;
float amb_da = (da*da*0.5 + 0.25) * ambiance;
amb_da *= dist_atten;
amb_da = min(amb_da, 1.0f - lit);