Feodor Volguine FeodorVolguine
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| //Normal distribution function (Trowbridge-Reitz GGX) | |
| float DistributionGGX(float NdotH, float alpha2) | |
| { | |
| float f = (NdotH * alpha2 - NdotH) * NdotH + 1.0f; | |
| return alpha2 / (f * f * PI); | |
| } | |
| //Height-correlated Smith-GGX visibility function | |
| float VisibilitySmithGGX(float NdotL, float NdotV, float alpha2) | |
| { |