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• XPU now automatically adjusts the texture and ptexture reserved cache allocation size to be the minimum of the requested texture memory limit option, and the actual size needed to store all the highest mipmap level texture tiles in the scene. In cases where there are very few textures in the scene and the requested texture memory limit has been set very high, this can be a substantial memory reduction.

Volumes

• XPU's performance on aggregate volumes when rendering with the GPU has been significantly improved. (CONFIRM WITH JFONG AND ETHANJ THAT THIS HAS BEEN BACKPATCHED. WE ALSO NEED TO TRACK THE RELEASE DATE FOR LEGAL PURPOSES.)

RIS

Volumes

• Added caching to OpenVDB, which improves memory and speed performance in cases where the same VDB grid is used many times. (XPU already has a memory-focused variant of this optimization.) RMAN-21922

Texturing

• The RixTexture::TextureDerivatives() call has been restored to its former functionality. (In R26.0 it returned RixTexture::InvalidFile for non-texture-atlas files.)