37 lines
614 B
GLSL
37 lines
614 B
GLSL
uniform sampler2D colormap;
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uniform sampler2D texture;
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uniform sampler2D lightmap;
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uniform vec4 fog;
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varying vec2 tst;
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varying vec2 lst;
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varying vec4 color;
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float
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sqr (float x)
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{
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return x * x;
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}
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vec4
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fogBlend (vec4 color)
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{
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float f;
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vec4 fog_color = vec4 (fog.rgb, 1.0);
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f = exp (-sqr (fog.a / gl_FragCoord.w));
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return mix (fog_color, color, f);
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}
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void
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main (void)
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{
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float pix = texture2D (texture, tst).r;
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float light = texture2D (lightmap, lst).r;
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float col;
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vec4 c;
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c = texture2D (colormap, vec2 (pix, light * 4.0)) * color;
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gl_FragColor = fogBlend (c);
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}
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