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37 lines
782 B
GLSL
37 lines
782 B
GLSL
layout(location=2) in vec4 pixelpos;
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layout(location=0) out vec4 FragColor;
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#ifdef GBUFFER_PASS
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layout(location=1) out vec4 FragFog;
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layout(location=2) out vec4 FragNormal;
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#endif
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//===========================================================================
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//
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// Main shader routine
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//
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//===========================================================================
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void main()
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{
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float fogdist;
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float fogfactor;
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//
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// calculate fog factor
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//
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if (uFogEnabled == -1)
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{
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fogdist = pixelpos.w;
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}
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else
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{
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fogdist = max(16.0, distance(pixelpos.xyz, uCameraPos.xyz));
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}
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fogfactor = exp2 (uFogDensity * fogdist);
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FragColor = vec4(uFogColor.rgb, 1.0 - fogfactor);
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#ifdef GBUFFER_PASS
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FragFog = vec4(0.0, 0.0, 0.0, 1.0);
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FragNormal = vec4(0.5, 0.5, 0.5, 1.0);
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#endif
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}
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