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OpenPBR material support #404
Description
Is your feature request related to a problem? Please describe.
Supporting a standard material implementation.
Describe the solution you'd like
OpenPBR is becoming more widely adopted. It would be good to have materials translate seamlessly between DCCs. Blender has already implemented OpenPBR.
Describe alternatives you've considered
None
Additional context
OpenPBR official repo with specifications: https://github.com/AcademySoftwareFoundation/OpenPBR
MaterialX official repo that describes the .mtlx format, which is used to import .mtlx and map them into OpenPBR parameters. https://github.com/AcademySoftwareFoundation/MaterialX
Activity
michaelsakharov commentedon Oct 3, 2026
First time hearing about this, I'll have to look into it! thanks for bringing it to my attention!
yosimba2000 commentedon Oct 3, 2026
Sure thing :)
The MaterialX repo does have a mostly complete rasterized implementation of OpenPBR materials, but I don't think it provides any behavior for refraction, thin walls, etc. Basically optics stuff it mostly ignores.
OpenPBR repo does provide the behavior/expectation for all the material features, but not the implementation. So raytracing, rasterization, etc is up to the user.
michaelsakharov commentedon Nov 1, 2026
This is fully implemented now!