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26 lines
693 B
GLSL
26 lines
693 B
GLSL
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uniform sampler2D myTexture;
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uniform vec4 skyBgColor;
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uniform float fogDistance;
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varying vec3 vPosition;
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void main (void)
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{
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//vec4 col = vec4(1.0, 0.0, 0.0, 1.0);
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vec4 col = texture2D(myTexture, vec2(gl_TexCoord[0]));
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float a = col.a;
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col *= gl_Color;
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col = col * col; // SRGB -> Linear
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col *= 1.8;
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col.r = 1.0 - exp(1.0 - col.r) / exp(1.0);
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col.g = 1.0 - exp(1.0 - col.g) / exp(1.0);
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col.b = 1.0 - exp(1.0 - col.b) / exp(1.0);
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col = sqrt(col); // Linear -> SRGB
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if(fogDistance != 0.0){
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float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
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col = mix(col, skyBgColor, d);
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}
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gl_FragColor = vec4(col.r, col.g, col.b, a);
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}
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