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33 lines
737 B
Plaintext
33 lines
737 B
Plaintext
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#ifndef LIB_UTIL_DISTORTION
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#define LIB_UTIL_DISTORTION
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vec4 applyDistortion(in vec4 color, in float strength, in float pixelDepth, in float sceneDepth)
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{
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vec4 distortion = color;
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float invOcclusion = 1.0;
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// TODO: Investigate me. Alpha-clipping is enabled for refraction for what seems an arbitrary threshold, even when
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// there are no associated NIF properties.
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if (distortion.a < 0.1)
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discard;
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distortion.b = 0.0;
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#if @reverseZ
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if (pixelDepth < sceneDepth)
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#else
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if (pixelDepth > sceneDepth)
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#endif
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{
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invOcclusion = 0.0;
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distortion.b = 1.0;
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}
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distortion.rg = color.rg * 2.0 - 1.0;
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distortion.rg *= invOcclusion * strength;
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return distortion;
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}
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#endif
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