ShaderChunk: Workaround for Adreno GPUs gl_FrontFacing bug. #21202
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The test model in #11438 also looks correct:
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Instead of: isFrontFacing = dot( normal, normalize( cross( fdx, fdy ) ) ) > 0.0;
normal = normal * ( float( isFrontFacing ) * 2.0 - 1.0 );I think we can just do: faceDirection = sign( dot( normal, normalize( cross( fdx, fdy ) ) ) );
normal = normal * faceDirection;I'll leave it for another PR. |
This was referenced Feb 4, 2021
This was referenced Dec 30, 2021
Merged
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Related issue: #10331 #15850 #17158 #17586 #17958 #20997
Description
Adreno drivers do not handle gl_FrontFacing properly so we need a workaround.
I've made sure that the models in #17804 look correct.