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Maniphest T79674

Mac OS Graphic AMD Radeon drives not recognized by Blender 2.80 and above
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Description

System Information
Operating system: macOS Catalina Version 10.15.6 (19G73)
Processor: 2.6 GHz 6-Core Intel Core i7
Memory: 16 GB 2667 MHz DDR4
Graphics card: AMD Radeon Pro 5500M 8 GB

Blender Version
Version 2.83.0 (2.83.0 2020-06-03).

Short description of error
Blender does not recognize the graphic card drivers on the above and previous Catalina macOS versions.
Note: drivers recognized OK by Windows 10 on same machine.
This forced me to create a boot camp drive with windows 10 and switch back and forth

Exact steps for others to reproduce the error
Install Blender on Mac pro 16 inches under Catalina OS.

Hope I provided enough info to help solve the issue

Event Timeline

Carlos Q (screendot) created this task.Aug 9 2020, 10:39 PM
Carlos Q (screendot) added a comment.Aug 9 2020, 10:41 PM

Robert Guetzkow (rjg) closed this task as a duplicate of T78572: Blackmagic eGPU not reconized.Aug 9 2020, 10:42 PM
Robert Guetzkow (rjg) added a subscriber: Robert Guetzkow (rjg).EditedAug 9 2020, 10:48 PM

Unfortunately Blender 2.80 and later does not support GPU rendering with AMD GPUs on macOS due to the deprecation of OpenCL. For a more detailed explanation please check the ticket that I've merged this one in.

This may change in the future though, when Blender uses Vulkan/MoltenVK and thereby Apple's Metal API. However, until Cycles is also ported it is not possible to use GPU rendering on macOS with Cycles. Third-party render engines like AMD Radeon™ ProRender are an alternative in the meantime.

Carlos Q (screendot) added a comment.Aug 9 2020, 11:42 PM

Thanks for your quick replay. Does this also affect viewport performance? I have noticed that when my scene gets more complicated with several objects and textures, the machine slow down to a point that is impossible to keep working and I have to switch to Windows.

Robert Guetzkow (rjg) added a comment.Aug 9 2020, 11:49 PM

This particular limitation on macOS doesn't impact viewport performance.