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- XPU currently only outputs EXR or TIFF frames
- PxrCamera not supported yet.
- Adaptive sampling is yet to be implemented
- Motion blur has not been fully implemented
- Trace Subsets have not been implemented. This then impacts the subsurfaceSubset feature of PxrSurface
- Volumes not yet implemented
- User defined AOVs or LPEs not yet implemented
- Only some geometric built-in AOVs are available under the same name they are available for RIS
- Holdouts, shadow collectors not yet implemented
- Deep Output. Coming soon.
- Multi-camera, multi-frame are not yet supported
- PxrOcclusion, PxrVisualizer, PxrUnified integrators are not supported.
- The built-in curvature calculation different is different to RIS, which results in differences in specular mollification.
- The "weighted" option for the pixelfiltermode parameter to the Hider is not yet supported.
- Procedurals not supported. However, if you are using the latest XGen in Maya, you should get renders of your data.
- Baking - either at the pattern level via PxrBakeTexture or at the renderer level to bake global illumination is not yet supported.