This release introduces improvements and some fixes to the previous release.
The release of 21.8 is designed to correct for bugs and performance in the core of RenderMan 21.8. Please visit the release notes for more information.
Known Limitations
RenderMan for Maya
Modifying light visibility while in IPR mode does not change light visibility
Maya fluids will currently only render if you add RenderMan volume controls. Select the fluid shape and in the AE, do Attributes->RenderMan->Add Volume Controls
Creating a mesh light during IPR will retain the old geometry (non-mesh light). A refreshed IPR session will remove the old geometry.
Prior versions of RenderMan for Maya are not compatible with RenderMan 21.0. Trying to load the version 20.0 plugin with RenderMan Pro Server 21 installed will cause the following warnings: "rfm Warning: skipping unknown Slim keyword: requires" when loaded. The 20.X plugin will not function correctly.