35 lines
1.3 KiB
GLSL
35 lines
1.3 KiB
GLSL
/**
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* @file sumLightsV.glsl
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*
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* Copyright (c) 2005-$CurrentYear$, Linden Research, Inc.
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* $License$
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*/
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float calcDirectionalLight(vec3 n, vec3 l);
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float calcPointLight(vec3 v, vec3 n, vec4 lp, float la);
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vec3 atmosAmbient(vec3 light);
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vec3 atmosAffectDirectionalLight(float lightIntensity);
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vec3 scaleDownLight(vec3 light);
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vec4 sumLights(vec3 pos, vec3 norm, vec4 color, vec4 baseLight)
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{
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vec4 col = vec4(0.0, 0.0, 0.0, color.a);
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// Collect normal lights (need to be divided by two, as we later multiply by 2)
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col.rgb += gl_LightSource[1].diffuse.rgb * calcDirectionalLight(norm, gl_LightSource[1].position.xyz);
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col.rgb += gl_LightSource[2].diffuse.rgb * calcPointLight(pos, norm, gl_LightSource[2].position, gl_LightSource[2].linearAttenuation);
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col.rgb += gl_LightSource[3].diffuse.rgb * calcPointLight(pos, norm, gl_LightSource[3].position, gl_LightSource[3].linearAttenuation);
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//col.rgb += gl_LightSource[4].diffuse.rgb * calcPointLight(pos, norm, gl_LightSource[4].position, gl_LightSource[4].linearAttenuation);
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col.rgb = scaleDownLight(col.rgb);
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// Add windlight lights
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col.rgb += atmosAmbient(baseLight.rgb);
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col.rgb += atmosAffectDirectionalLight(calcDirectionalLight(norm, gl_LightSource[0].position.xyz));
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col.rgb = min(col.rgb*color.rgb, 1.0);
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return col;
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}
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