Arnold 7.2.4.0

Features

• usd#1634 - Support curves orientations identically between USD and Hydra / Prevent errors due to bad curves orientations count.
• usd#1615 - add bespoke usdgenschema command to create arnold schema without python
• usd#739 - Implement the ArnoldProceduralCustom prim in hydra.
• usd#1644 - Support nodes mask in the hydra procedural
• usd#1656 - Use the same tessellation for sphere primitives as Hydra
• usd#1632 - Support custom materialx node definitions placed in a folder defined by the environment variable PXR_MTLX_STDLIB_SEARCH_PATHS
• usd#1603 - Support custom USD materialx shaders with any shader type
• usd#1586 - Support motion blur in the hydra procedural
• usd#1587 - Support object path in the hydra procedural
• usd#1664 - Support hydra procedural with a cacheID

Bug fixes

• usd#1613 - Invisible Hydra primitives should ignore arnold visibility
• usd#1641 - Ensure nodes created by the render delegate have the correct parent procedural.
• usd#1652 - Restore the schema installed files organisation.
• usd#1673 - UsdUvTexture ignores missing textures in hydra
• usd#1675 - Fix UsdUvTexture default wrap modes and uvset coordinates.
• usd#1657 - Fix a motion blur sampling bug happening when a mesh has facevarying indexed normals and different number of indices per key frame.
• usd#1693 - Fix geometry light not rendering in recent version.
• usd#1696 - Fix cryptomatte render by restoring previous filter assignment to the default filter.

Build

• usd#1648 - Fix schemas generation issue that was intermittently failing