09 Nov 2022

C4DtoA 4.4.1 uses Arnold 7.1.3.2 and is a minor feature release bringing support for the OCIO color management changes in Cinema 4D 2023.1 and a number of bug fixes.

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.

Installation

• Download the Arnold for Cinema4D plugin
• Follow these installation instructions .

System Requirements

• Cinema 4D
  • S24.111 and above
  • R25.010 and above
  • S26.013 and above
  • 2023.0.0 and above

Important: Rosetta2 mode for M1 Macs is no longer supported since Cinema 4D S26. This means Arnold can not run on Apple Mac models with M series chips in Cinema 4D S26 and Cinema 4D 2023 at the moment. M1 support is planned in a future release.

• 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.
• CPUs need to support the SSE4.1 instruction set. Apple Mac models with M series chips are supported under Rosetta 2 mode.
• 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 495.46 or higher drivers on Linux and 511.09 (Quadro/GeForce), or higher on Windows. See Getting Started with Arnold GPU for more information.
• Optix™ denoiser requires an NVidia GPU with CUDA™ Compute Capability 5.0 and above.

Enhancements

• Support for OCIO color management changes in Cinema 4D 2023.1: Cinema 4D 2023.1 brings several bug fixes and changes to native OCIO color management, which make older plugin versions to produce incorrect output when saving to 8-bit image format (e.g. jpg, png). Now the plugin is updated to support both, 2023.0 and 2023.1 OCIO color management. (C4DTOA-2820)

  Note: Known limitations in Cinema 4D 2023.0:

  • View transform has to be baked into the output when saving to an 8-bit image format (e.g. jpeg, png).
  • Picture Viewer does not display the proper view transform when not baked in.
  • Material previews are ignoring the selected Thumbnail color space and always displayed in sRGB.

  Known limitations in Cinema 4D 2023.1:

  • View transform has to be baked into the output when saving to an 8-bit image format (e.g. jpeg, png) from Team Render and command line render.
  • Material previews are ignoring the selected Thumbnail color space and always displayed in sRGB.

• Scene export to ASCII USD format: A new option is added to the Scene Export dialog to export binary-encoded (.usd) or ASCII (.usda) USD format. (C4DTOA-2835)

Bug Fixes

• C4DTOA-2841 - IPR does not update after undo in the Node Editor
• C4DTOA-2843 - Random crash after undo in the Node Editor
• C4DTOA-2846 - Wrong output is used when auto connect a new root shader in the Node Material
• C4DTOA-2847 - Watermark in viewport previews
• C4DTOA-2850 - IPR crash in scene with nested object generators