28 lines
802 B
GLSL
28 lines
802 B
GLSL
// imitation of the Unreal Engine 1.x ambient glow effect
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// plus brightmapping
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vec4 ProcessLight( vec4 color )
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{
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float bright = texture(brighttex,vTexCoord.st).x;
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vec2 gs = texture(ambglow,vec2(.5)).xy;
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if ( gs.x > .5 ) return vec4(min(color.rgb+vec3(bright),1.),color.a);
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if ( gs.y > .5 )
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{
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float glow = max(0.,sin(timer*4.)-.5);
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return vec4(min(color.rgb+vec3(bright)+vec3(glow),1.),color.a);
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}
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float glow = .25+.2*sin(timer*8.);
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return vec4(min(color.rgb+vec3(bright)+vec3(glow),1.),color.a);
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}
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vec4 ProcessTexel()
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{
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vec2 gs = texture(ambglow,vec2(.5)).xy;
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if ( gs.x > .5 ) getTexel(vTexCoord.st);
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if ( gs.y > .5 )
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{
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float glow = max(0.,sin(timer*4.)-.5);
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vec4 col = getTexel(vTexCoord.st);
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return vec4(min(col.rgb+vec3(glow),1.),col.a);
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}
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return getTexel(vTexCoord.st);
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}
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