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KtoA 4.2.5.2 - Arnold for Katana

13 February 2024

KtoA 4.2.5.2 uses Arnold 7.2.5.2 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

  • 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-888 - UsdIn shader parameters sometimes not set correctly

  • KTOA-936 - UsdIn: Wrong port connections for bump and displacement

  • KTOA-975 - Check update notification works

  • KTOA-978 - UsdIn: imported material has wrong ports and connections

  • KTOA-982 - Scenegraph iterators still not freeing Katana geolib cache properly

  • ARNOLD-9734 - Cache and texture flush requests were ignored

  • ARNOLD-14660 - Crash changing imager parameter after disconnecting from driver

  • ARNOLD-14644 - Autobump goes away at extreme magnification

  • ARNOLD-14287 - Rare crash when compiling OSL shaders during IPR

  • ARNOLD-14650 - [GPU] OptiX denoiser renders black when using more than one GPU

  • ARNOLD-14631 - [GPU] Random crash with textures

  • ARNOLD-10216 - [GPU] Log should report why a GPU is not matching requirements

  • usd#1812 - Fix a startup time regression introduced in 7.2.4.0.

  • usd#1753 - Fix a problem with Yeti where the transforms of the ArnoldProceduralCustom were not taken into account in kick and USD procedural.

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.

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