KtoA 4.2.5.1 uses Arnold 7.2.5.1 and is a bugfix release. For the full list of features in KtoA 4.2.5.0, see the KtoA 4.2.5.0 release notes.
Installation
Katana 4.5 and 5.0 compatibility
Katana 4.5v3 and 5.0v3 introduced a change that affects the Arnold USD plugins support in Katana. This release of KtoA supports those Katana versions or newer within their release series. Katana 4.5v1, 4.5v2, 5.0v1, and 5.0v2 are not supported by this KtoA release.
Bug Fixes
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ARNOLD-13843 - Rare crash when deleting procedural
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ARNOLD-14130 - GPU/CPU discrepancy when using bump3d and component linking
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ARNOLD-14504 - [GPU] Interactive updates cause random crash in optixSbtRecordPackHeader()
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ARNOLD-14537 - Rare crash when rendering the last bucket with extremely high AA and many threads
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ARNOLD-14553 - [GPU] Fix "part or all of the requested memory range is already mapped" crash
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ARNOLD-14574 - AiBegin in Windows is slow to return
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ARNOLD-14594 - [GPU] Random crash in image shader
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usd#1776 - Fix incorrect PointInstancer instance orientations in the render delegate.
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usd#1769 - Fix curve uvs when they are vertex interpolated.
System Requirements
- Windows 10 or later, with the Visual Studio 2019 redistributable.
- Linux with at least glibc 2.17 and libstdc++ 4.8.5 (gcc 4.8.5). This is equivalent to RHEL/CentOS 7.
- x86-64 CPUs need to support the SSE4.1 instruction set.
- GPU rendering works on Windows and Linux only and requires an NVIDIA GPU of the Ampere, Turing, Volta, Pascal, or Maxwell architecture. We recommend using the 535.104 or higher drivers on Linux and 537.13, or higher on Windows. See Arnold GPU for more information.
- OptiX™ denoiser requires an NVIDIA GPU with CUDA™ Compute Capability 5.0 and above.
- Katana 4.5v3 or newer, Katana 5.0v3 or newer, Katana 6.0v1 or newer, or Katana 6.5v1 or newer.
// Stephen Blair
// Arnold Renderer Support
