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4.6.6.1 - Arnold for Cinema 4D

18 October 2023

C4DtoA 4.6.6.1 uses Arnold 7.2.4.1 and is a bugfix release. For the full list of features in C4DtoA 4.6.6, see the C4DtoA 4.6.6 release notes.

Installation

  • Download Arnold for Cinema 4D from your Autodesk Account. See Download Arnold for more information about downloading C4DtoA from your Autodesk Account.

  • Follow these installation instructions.

Cinema 4D Compatibility

  • R25.010 and above
  • S26.013 and above
  • 2023.0.0 and above
  • 2024.0.0 and above

Note: Known issues in the legacy Arnold Shader Network Editor since Cinema 4D S24:

  • Drag & drop nodes to the node editor does not work as expected:
    • Drag & drop an Arnold Material to create a reference. A Cinema 4D Object Operator node is created instead of an Arnold Material reference node.
    • Drag & drop an object to create an object reference. A Cinema 4D Object Operator node is created instead of an Arnold object node.
    • Drag & drop a Vertex Map to create a Vertex Map shader. A Cinema 4D Object Operator node is created instead of an Arnold Vertex Map shader.
  • Ctrl + drag a shader in the node editor in S24 creates two copies instead of one. shift + drag and Shift + Alt + drag does not work.

Note: Adding shaders to a Node Material from python crashes Cinema 4D 2024.

Bug Fixes

  • C4DTOA-3090 - Wrong IPR when soloing a shader in a Node Material which has a custom UV set
  • C4DTOA-3093 - Atmosphere volume shader preview is not visible
  • 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.
  • macOS 10.13 or later.
  • x86_64 CPUs need to support the SSE4.1 instruction set. Apple Mac models with M series chip are natively supported.
  • GPU rendering works on Windows and Linux only and requires an NVIDIA GPU of the Ada, 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.
  • 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.
Parent page: 4.6.6

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