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Comparing different sampling methods for GGX IBL
I have made a demo that shades a sphere with an environment map. I wanted to compare 3 different ways of sampling the environment.
Uniform sampling.
Importance sampling with the NDF as suggested in ...
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Problem sampling uniformly envmap with GGX
I have made a program that samples uniformly an environment map and computes the lighting using the GGX BRDF.
I have made a small example that reproduces the issue I'm having. You can check it out ...