HtoA 6.3.3.1 - Arnold for Houdini
9 August 2024
HtoA 6.3.3.1 is a bugfix release using Arnold 7.3.3.1.
Installation
Download Arnold for Houdini from your Autodesk Account. See Download Arnold for more information about downloading HtoA from your Autodesk Account.
Follow these installation instructions
Known Issues
- HTOA-2698 - The new ramp shaders aren't translating properly in Solaris. As a workaround, you can manually change the asset type to the v1 version of the node. This will be fixed in an upcoming release
![](https://help.autodesk.com/cloudhelp/ENU/AR-Houdini/images/solaris_v2_ramp_workaround.png)
Bug Fixes
- ARNOLD-15321 - Hang when
force_update
metadata is used - ARNOLD-15322 - Rare hang in deep_exr driver
- ARNOLD-15339 -
AiNodeAddDependency()
does not work for render session options node - ARNOLD-15343 - Toon contour_filter produces lighter lines with interactive renders
- usd#1989 - Support mixed half/float channels when using the render delegate in batch mode with husk.
- usd#1610 - Proper support of arnold:visibility primvar in hydra
System Requirements
- Houdini, Houdini FX, Houdini Indie and Houdini Education
- 19.5.805
- 20.0.751
- 20.5.278
- Linux with at least glibc 2.28 and libstdc++ 9.3.1 (gcc 9.3.1) for Houdini 19.5, 20 and 20.5. This is equivalent to RHEL/CentOS 7.
- Linux with at least glibc 2.17 and libstdc++ 11.2.1 (gcc 11.2.1) for Houdini 20/20.5. This is equivalent to Rocky 8.
- macOS 10.13 or later, macOS 11 or later for Houdini 19.5
- Apple Mac models with M series chips:
- Natively supported by Arnold for Houdini 19.5
- Supported under Rosetta 2 mode for older versions of Houdini
- x86-64 CPUs need to support the SSE4.1 instruction set. Apple Mac models with M series chip are supported natively mode.
- GPU rendering and OptiX denoising work on Windows and Linux only, and require an NVIDIA GPU with the Maxwell architecture or later.
- On Linux, we recommend 535.104 or higher drivers.
- On Windows, we recommend 537.13 or higher drivers.
- Intel OIDN GPU support is limited to:
- MacOS
- Apple native CPUs (M1 and newer)
- Windows
- Intel Xe dedicated and integrated GPUs
- NVIDIA GPUs using Turing or newer architectures
- AMD GPUs with RDNA2 (Navi 21 only) and RDNA3 (Navi 3x) architectures
- MacOS