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

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