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We have deprecated the C++ out-of-the-box patterns in favor of an equivalent set of OSL patterns.  The new patterns have the same names and functionality as the old patterns, so no changes to your networks are necessary.  We now provide OSL patterns because they run in both XPU and RIS, whereas the C++ patterns only worked with RIS.

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Known Limitations

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Installation + Licensing

• macOS 11 or 12 (Big Sur or Monterey): The installer can download the packages from Pixar, but can't run them to get them unpacked on macOS 11 or 12 (Big Sur or Monterey).  You must manually double-click on the .pkg files that the installer leaves in the Downloads folder.
• The License Server can fail on macOS 11 or 12 (Big Sur or Monterey): The License Server can fail.  Restarting it should make it work again.

Denoiser

• Only supported on Linux. MacOS and Windows platforms will be supported in 25.0 Release. 
• Cannot yet denoise images generated from XPUmacOS/Apple Silicon: The denoiser is not supported on Apple Silicon, even with Rosetta.

RIS and XPU

• Color Management: Although we have upgraded to the VFX Reference Platform 2021, there are still color management limitations:
  • IT does not support OCIO 2.0 configs yet.If you use OCIO with the ACES config, there's a known issue with a crash when you try to use PxrBlackBody.

RIS

• Some parameters in the set of the MaterialX Lama nodes have changed their name. Specifically, the "color" and "normal" names have been renamed to avoid conflict with some OSL keywords. The parameter "newParamNames" has been added to the MaterialX Lama nodes to be able to swap between the old and the new parameter names. This will allow users the ability of using lama networks created with the old param set and still properly rendered in 25. In 26, only the new parameter names will be supported and the newParamNames parameter will disappear.

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