KtoA 4.2.4.1 - Arnold for Katana
18 October 2023
KtoA 4.2.4.1 uses Arnold 7.2.4.1 and is a bug-fix release.
Installation
Download Arnold for Katana from your Autodesk Account. See Download Arnold for more information about downloading KtoA from your Autodesk Account.
Follow these installation instructions
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
- KTOA-918 - double attributes are not converted to float user data
- KTOA-926 - curve wrap parameter is ignored with UsdIn
- KTOA-937 - texture_auto_generate_tx different default from core missing in renderer info plugin
- ARNOLD-9773 - Exorbitant rays/pixel reported for first % progress report
- ARNOLD-13909 - Crash with extreme numbers of overlapping volumes
- ARNOLD-14068 - Incorrect smart opaque when a shader is assigned to an instancer
- ARNOLD-14087 - Crash when writing a scene without a valid render session
- ARNOLD-14110 - GPU crash when attempting to read an EXR/TX file that isn't present
- ARNOLD-14138 - Round up initial progress stat in log so it reports 1% and not 0%
- ARNOLD-14180 - Profiler uses too much memory in very long running renders
- usd#1678 - Add support for Arnold shaders with multiple outputs
- usd#1711 - Fix duplicated Arnold user data introduced in 7.2.3.0
- usd#1728 - Fix Cryptomatte compatibility with Nuke.
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 525.89 or higher drivers on Linux and 528.49, or higher on Windows. See Arnold GPU for more information.
- For GPU rendering, the cache also needs to be re-populated after installing a new Arnold version, updating to a new NVIDIA driver, or changing the hardware configuration of GPUs on the system. More information can be found here.
- OptiX™ denoiser requires an NVIDIA GPU with CUDA™ Compute Capability 5.0 and above.
- Katana Katana 4.0v1 or newer, Katana 4.5v3 or newer, Katana 5.0v3 or newer, or Katana 6.0v1 or newer.