0030700: Visualization, TKOpenGl - support PBR Metallic-Roughness shading model
[occt.git] / src / Shaders / Shaders_PBRDistribution_glsl.pxx
CommitLineData
67312b79 1// This file has been automatically generated from resource file src/Shaders/PBRDistribution.glsl
2
3static const char Shaders_PBRDistribution_glsl[] =
4 "//! Calculates micro facet normals distribution.\n"
5 "float occPBRDistribution (in float theCosH,\n"
6 " in float theRoughness)\n"
7 "{\n"
8 " float aDistribution = theRoughness * theRoughness;\n"
9 " aDistribution = aDistribution / (theCosH * theCosH * (aDistribution * aDistribution - 1.0) + 1.0);\n"
10 " aDistribution = INV_PI * aDistribution * aDistribution;\n"
11 " return aDistribution;\n"
12 "}\n";