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// Helper function for anisotropy |
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//----------------------------------------------------------------------------- |
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// Ref: http://blog.selfshadow.com/publications/s2012-shading-course/burley/s2012_pbs_disney_brdf_notes_v3.pdf (in addenda) |
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// Convert anisotropic ratio (0->no isotropic; 1->full anisotropy in tangent direction) to roughness |
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void ConvertAnisotropyToRoughness(float roughness, float anisotropy, out float roughnessT, out float roughnessB) |
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{ |
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// Use the parametrization of Sony Imageworks. |
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sebastienlagarde