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Make gl_FrontFacing a top level shader variable #2

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dmnsgn opened this issue Jul 1, 2021 · 0 comments
Open

Make gl_FrontFacing a top level shader variable #2

dmnsgn opened this issue Jul 1, 2021 · 0 comments
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dmnsgn commented Jul 1, 2021

Why: problems appear with gl_FrontFacing when inside a function (https://bugs.chromium.org/p/chromium/issues/detail?id=1154842).

How:

  • Declare: float frontFacing = float(gl_FrontFacing) * 2.0 - 1.0;
  • And use frontFacing in material frag/depth pre pass shaders and in normal and clear coat chunks.
@dmnsgn dmnsgn added the bug label Jul 1, 2021
@dmnsgn dmnsgn self-assigned this Jul 1, 2021
@dmnsgn dmnsgn transferred this issue from pex-gl/pex-renderer Jul 5, 2022
@dmnsgn dmnsgn removed the bug label Jan 29, 2024
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