19 June 2024
MtoA 5.4.2.1 uses Arnold 7.3.2.1. See also the MtoA 5.4.2 release notes.
Installation
Bug Fixes
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MTOA-1988 - .bundle libraries not packaged correctly on macOS installs
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MTOA-1969 - Python error when loading MtoA before mayaUSD
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MTOA-1959 - Snapshots are removed after toggling snapshots folder on and then off
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MTOA-1914 - Incorrect UV transform translation for imported ramp shaders
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MTOA-1968 - Xgen extension fails to add Arnold attributes in Maya 2025
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ARNOLD-14365 - Fix AiNodeGetMatrix to return node matrix instead of identity after node initialization in batch renders
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ARNOLD-14779 - AtProfiledLockable not compiling on Windows in newer MSVC due to Mutex::native_handle_type
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ARNOLD-14893 - [GPU] 4MB GPU memory leak per frame
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ARNOLD-15041 - Arnold does not run on Linux distros with glibc 2.39 (RHEL 9.4)
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ARNOLD-15048 - Fix OIDN dll name clash with DCCs by renaming OIDN libraries
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ARNOLD-15060 - Arnold should not catch C++ exceptions it did not generate
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ARNOLD-15087 - uv_projection shader uses corrupt UVs for evaluating its default_color shader
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ARNOLD-15121 - [GPU] crash when CUDA error has no message
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ARNOLD-15122 - Crash destroying a light that is part of a light group
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ARNOLD-15136 - Random hang when parallel initializing scene
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ARNOLD-15169 - Crash when modifying a child node from procedural_update
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usd#1923 - Fix instance primvar indices with multiple prototypes
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usd#1929 - Ensure subdiv_iterations is not set unnecessarily during procedural updates
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usd#1932 - Fix a crash when the number of elements in a primvar is not equal to the number of points
// Stephen Blair
// Arnold Renderer Support