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• The roughness parameter in LamaHairChiang has been reparameterized to produce a more linear response.
• The default longitudinal roughness values in LamaHairChiang have changed from 0.2 0.3 0.3 to 0.13 0.27 0.27.  (The azimuthal roughness is unchanged at 0.35).
• 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.

Changes in Behavior

• Aggregate Volumes are now the default in RIS, and the only supported volume workflow in XPU.  Each of our integrations in the DCCs has been enhanced to automatically add volumes to the global volume aggregate.  You can create different volume aggregate groups manually.

Deprecations

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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