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Energy conservation improvements for generated GLSL #402

Merged
merged 1 commit into from Apr 9, 2020
Merged

Energy conservation improvements for generated GLSL #402

merged 1 commit into from Apr 9, 2020

Commits on Apr 8, 2020

  1. Energy conservation improvements for generated GLSL 

    - Add mx_microfacet_ggx_directional_albedo for computing a directional albedo for the GGX/Smith/Schlick BRDF.
- Replace mirror Fresnel with directional albedo for BSDF layering.
- Move Fresnel computation into the lighting integral for filtered importance sampling.
- Add mx_average_roughness for converting from anisotropic to isotropic roughness.
    @jstone-lucasfilm
    jstone-lucasfilm committed Apr 8, 2020
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