'OpenCL' + 'rx580' + 'Version v2.83+' = Borked #91032

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opened 1 year ago by jiriks74 · 7 comments

System Information
Operating system: Arch Linux, OpenCL drivers: opencl-mesa, rocm-opencl-runtime
Graphics card: XFX Radeon rx580 8GB

Blender Version
Broken: v2.83.0, v2.83.1, v2.83.9, v2.90.0, v2.93.3
Worked: 2.82

Short description of error
When rendering with openCL on rx580, blender creates a ton of artifacts and as the render goes, it creates even more, making the render not useful at all (see screenshots)

blender.png

blender2.png

blender3.png

blender4.png

Exact steps for others to reproduce the error
bmw27_gpu.blend
Go Edit, Preferences, under System choose OpenCL and choose Ellsemere [Radeon RX 470/480/570/570X/580/580X/590].
Open the BMW gpu file and render it. You will see artifacts

**System Information** Operating system: Arch Linux, OpenCL drivers: `opencl-mesa`, `rocm-opencl-runtime` Graphics card: XFX Radeon rx580 8GB **Blender Version** Broken: v2.83.0, v2.83.1, v2.83.9, v2.90.0, v2.93.3 Worked: 2.82 **Short description of error** When rendering with openCL on rx580, blender creates a ton of artifacts and as the render goes, it creates even more, making the render not useful at all (see screenshots) ![blender.png](https://archive.blender.org/developer/F10349076/blender.png) ![blender2.png](https://archive.blender.org/developer/F10349077/blender2.png) ![blender3.png](https://archive.blender.org/developer/F10349078/blender3.png) ![blender4.png](https://archive.blender.org/developer/F10349079/blender4.png) **Exact steps for others to reproduce the error** [bmw27_gpu.blend](https://archive.blender.org/developer/F10349034/bmw27_gpu.blend) Go `Edit`, `Preferences`, under `System` choose `OpenCL` and choose `Ellsemere [Radeon RX 470/480/570/570X/580/580X/590]`. Open the BMW gpu file and render it. You will see artifacts
Poster

Added subscriber: @jiriks74

Added subscriber: @jiriks74
Grady commented 1 year ago

Added subscriber: @Grady

Added subscriber: @Grady
jiriks74 changed title from OpenCL + rx580 + Version v2.83+ = Borked to 'OpenCL' + 'rx580' + 'Version v2.83+' = Borked 1 year ago
Poster

This happens with v2.93 and opencl-amd (AMDGPU PRO) driver, which has OpenCL 2.0
blender5.png

This happens with v2.93 and `opencl-amd` (AMDGPU PRO) driver, which has OpenCL 2.0 ![blender5.png](https://archive.blender.org/developer/F10349349/blender5.png)
Poster

Downgrading opencl-amd to 20.10.x.. solved the issue for now. Is the problem on blender side or amd side?

Downgrading `opencl-amd` to `20.10.x..` solved the issue for now. Is the problem on blender side or amd side?
Owner

Added subscriber: @ThomasDinges

Added subscriber: @ThomasDinges
Owner

Changed status from 'Needs Triage' to: 'Archived'

Changed status from 'Needs Triage' to: 'Archived'
ThomasDinges closed this issue 1 year ago
Owner

OpenCL rendering support was removed in Blender 3.0.
The combination of the limited Cycles kernel implementation, driver bugs, and stalled OpenCL standard
has made maintenance too difficult. Thanks for your report, but it's unlikely that there will be further fixes for OpenCL.

For AMD GPUs, there is a new backend based on the HIP platform.
In Blender 3.0, this is supported on Windows with RDNA and RDNA2 generation discrete graphics cards.
It includes Radeon RX 5000 and RX 6000 series GPUs. Driver version Radeon Pro 21.Q4 or newer is required.

https://wiki.blender.org/wiki/Reference/Release_Notes/3.0/Cycles
https://code.blender.org/2021/11/next-level-support-for-amd-gpus/

OpenCL rendering support was removed in Blender 3.0. The combination of the limited Cycles kernel implementation, driver bugs, and stalled OpenCL standard has made maintenance too difficult. Thanks for your report, but it's unlikely that there will be further fixes for OpenCL. For AMD GPUs, there is a new backend based on the HIP platform. In Blender 3.0, this is supported on Windows with RDNA and RDNA2 generation discrete graphics cards. It includes Radeon RX 5000 and RX 6000 series GPUs. Driver version Radeon Pro 21.Q4 or newer is required. https://wiki.blender.org/wiki/Reference/Release_Notes/3.0/Cycles https://code.blender.org/2021/11/next-level-support-for-amd-gpus/
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Reference: blender/blender#91032
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