01 Dec 2022

C4DtoA 4.5.0.1 uses Arnold 7.1.4.1 and is a bugfix release, including fixes for Node Material previews and other issues.

Installation

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

Cinema 4D Compatibility

• S24.111 and above
• R25.010 and above
• S26.013 and above
• 2023.0.0 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.

Bug Fixes

• C4DTOA-1992 - Utilities menu is not displayed in the Mac menu bar

• C4DTOA-2860 - Asset browser links do not work in the Node Editor

• C4DTOA-2866 - Drag & drop texture to Node Editor hangs in Cinema 4D 2023.1

• C4DTOA-2868 - Node Material previews fail to load

• C4DTOA-2870 - Some texture type shaders render as surface in viewport previews

• C4DTOA-2871 - Dash character is not allowed in user parameter names

• C4DTOA-2873 - Occasional crashes when rendering legacy material previews

• ARNOLD-12755 - [License Manager] Diagnostics hangs on Mac

• ARNOLD-12778 - Fix rare RLM license checkout failure

• ARNOLD-12781 - Autodesk Analytics (ADP) bug fixes

• ARNOLD-12794 - Rare Apple ARM precision errors

• ARNOLD-12808 - Report whether Arnold is running natively or under Rosetta translation

• ARNOLD-12820 - Detect texture color space change without requiring texture cache flush

• ARNOLD-12821 - AutoTX: cannot create folder for TX file error

• ARNOLD-12846 - Crash when checking out license on older Windows machines without AES-NI CPU support

• usd#1357 - Add Hydra env variable to control texture_auto_generate_tx

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 Ampere, Turing, Volta, Pascal, or Maxwell architecture. We recommend using the 495.46 or higher drivers on Linux and 511.09 (Quadro), 511.09 (GeForce), or higher on Windows. See Arnold GPU for more information.
• OptiX™ denoiser requires an NVIDIA GPU with CUDA™ Compute Capability 5.0 and above.

The driver type must be set to DCH.

^{In the driver page, select "Windows Driver Type:" DCH}

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 .