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Incorrect interpretation of faceVarying normals when the orientation is left handed. #2027

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cpichard opened this issue Jul 24, 2024 · 1 comment · Fixed by #2028
Closed

Incorrect interpretation of faceVarying normals when the orientation is left handed. #2027

cpichard opened this issue Jul 24, 2024 · 1 comment · Fixed by #2028
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bug Something isn't working

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@cpichard
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Describe the bug
When a mesh has leftHanded orientation and faceVarying normals, the procedural will render a visual result that looks incorrect:
incorrect
instead of
correct

This bug is visible in Arnold 7.3.2.1.
Here is a test scene to reproduce the issue:
faceVaryingNormals.usd.zip
@cpichard cpichard added the bug Something isn't working label Jul 24, 2024
@autodesk-oss-arnold-bot
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Issue synced internally to ARNOLD-15313

@cpichard cpichard mentioned this issue Jul 24, 2024
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@github-project-automation github-project-automation bot moved this from Todo to Done in Arnold USD Jul 24, 2024
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Arnold USD
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fix interpolation of faceVarying normals when the mesh is left handed cpichard/arnold-usd
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@cpichard