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• Shading: Fixed a known look difference between CPU and GPU portions of XPU
• BxDFs: Fixed the potential for NaNs when using the fuzz lobe of PxrSurface
• Textures: Fixed issue with primitive variable substitutions into texture filenames
• Textures: Fixed artifacts that arise in XPUGPU mode when texture cache size is small
• Textures: If the memory specified for ptex is too small, instead of emitting a warning, use 128MB and render without a warningXPU now shares the same minimum ptex and non-ptex texture cache sizes RIS.  In the case the user sets a minimum texture cache that is lower than our internal minimum we use it and do not display any warning for both ptex and non-ptex texture caches
• OSL: Robustly handle the case if memory allocation fails when setting up the color system for OSL
• Patterns: Fixed a crash that would occur if '-' was used in the name of a pattern
• Performance: Fixed cases where CPU + GPU would sometimes render slower than the GPU alone
• Geometry: Fixed a problem that could result in a crash when editing materials on curves
• Lighting: Correctly initialize default values for light parameters in XPU

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