Fix T53217: GLSL principled BSDF black with zero clearcoat roughness.
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blender-bot
2023-02-14 08:39:23 +01:00
Referenced by issue #53683, 2.79a release Referenced by issue #53217, Principled BSDF material turns black in the viewport when Clearcoat is set to 1 and the Clearcoat Roughness is set to 0
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@ -2524,7 +2524,11 @@ float schlick_fresnel(float u)
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float GTR1(float NdotH, float a)
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{
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if (a >= 1.0) return M_1_PI;
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if (a >= 1.0) {
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return M_1_PI;
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}
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a = max(a, 0.001);
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float a2 = a*a;
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float t = 1.0 + (a2 - 1.0) * NdotH*NdotH;
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return (a2 - 1.0) / (M_PI * log(a2) * t);
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