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[Precompute BRDF] Calcualte preintegrated BRDF for IBL/... in a compute pre-pass #464

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T-rvw opened this issue Feb 7, 2024 · 0 comments

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T-rvw commented Feb 7, 2024 •

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bgfx implementation is similar to what we did in PBR sky. You can also have a look at https://github.com/pezcode/Cluster/blob/master/src/Renderer/Shaders/pbr.sh.

IBL brdf can refer to https://github.com/DiligentGraphics/DiligentFX/blob/1c1a425d114e8f581267f22b0f02b32b2739cbf9/Shaders/PBR/private/PrecomputeBRDF.psh.

Then you can define an BRDF type enum to support multiple kinds of BRDF functions to use.

T-rvw assigned roeas

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