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- Dynamic String construction in your own patterns is not supported
- There is no support for custom plugins
- PxrSeExpr not supported
- PxrDirt & PxrCurvature require the trace() OSL call, which is not yet supported.
Support for a single level of recursion will be added in a future release. - Point clouds not supported
- PxrBakeTexture and PxrBakePointCloud not supported
- Dynamic path construction in your own patterns is not supported, but please note that we do support the following path tokens <UDIM>, <u>, <v>, <U>, <V> and <primstr:varname> that will result in a "dynamic" path to your textures. <primstr:varname> can be used to reference the value in a constant primvar or user attribute to build a dynamic path. Also note that <primstr:varname> is not in beta1 for XPU, but will be in a later beta.
- XPU samples textures at one MIP level coarser than RIS so that it may store more textures in limited GPU memory. This results in slightly blurrier renders from XPU than RIS.
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Geometry
- Needs info here
- and here
- and here
- Catmull-Clark Subdivision
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