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7860770232
Base normal map support has been implemented in path tracing (just geometry normal replacement). Smooth normal adaptation has been implemeneted in order to avoid black areas artefacts during path tracing. Tangent normal space calcuation has been moved to separate unified function. Tangent space orthogonalization algorithm has been changed in order to handle all orientations and combinations of UV coordinates.
36 lines
1.1 KiB
GLSL
36 lines
1.1 KiB
GLSL
//! Returns point light source attenuation factor
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float occRangedPointLightAttenuation (in float theDistance, in float theRange)
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{
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if (theDistance <= theRange)
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{
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float aResult = theDistance / theRange;
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aResult *= aResult;
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aResult *= aResult;
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aResult = 1.0 - aResult;
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aResult = clamp(aResult, 0.0, 1.0);
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aResult /= max(0.0001, theDistance * theDistance);
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return aResult;
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}
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return -1.0;
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}
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//! Returns point light source attenuation factor with quadratic attenuation in case of zero range.
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float occPointLightAttenuation (in float theDistance, in float theRange)
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{
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if (theRange == 0.0)
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{
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return 1.0 / max(0.0001, theDistance * theDistance);
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}
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return occRangedPointLightAttenuation (theDistance, theRange);
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}
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//! Returns point light source attenuation factor with linear attenuation in case of zero range.
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float occPointLightAttenuation (in float theDistance, in float theRange, in float theLinearAttenuation, in float theConstAttenuation)
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{
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if (theRange == 0.0)
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{
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return 1.0 / (theConstAttenuation + theLinearAttenuation * theDistance);
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}
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return occRangedPointLightAttenuation (theDistance, theRange);
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}
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