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Cycles: Disable OpenImageDenoise support for AMD GPUs in Blender 4.1 #119476

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Brecht Van Lommel merged 1 commits from brecht/blender:disable-oidn-hip into blender-v4.1-release 2024-03-14 18:18:28 +01:00
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Brecht Van Lommel commented 2024-03-14 17:04:16 +01:00
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In older drivers with an integrated GPU, this may crash. This not only
affects HIP, but also can crash when using Cycles with an NVIDIA or
Intel GPU in combination with an AMD CPU.

Fixes for this are expected to be coming, but there will not be enough
time for user testing, and it is difficult to be certain that the fix
is complete.

So to be careful, this is postponed until it has had more testing.

In older drivers with an integrated GPU, this may crash. This not only affects HIP, but also can crash when using Cycles with an NVIDIA or Intel GPU in combination with an AMD CPU. Fixes for this are expected to be coming, but there will not be enough time for user testing, and it is difficult to be certain that the fix is complete. So to be careful, this is postponed until it has had more testing.
Brecht Van Lommel added 1 commit 2024-03-14 17:04:26 +01:00
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a8cdae41eb Cycles: Disable OpenImageDenoise support for AMD GPUs in Blender 4.1 
In older drivers with an integrated GPU, this may crash. This not only
affects HIP, but also can crash when using Cycles with an NVIDIA or
Intel GPU in combination with an AMD CPU.

Fixes for this are expected to be coming, but there will not be enough
time for user testing, and it is difficult to be certain that the fix
is complete.

So to be careful, this is postponed until it has had more testing.
Brecht Van Lommel commented 2024-03-14 17:04:57 +01:00
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Blender Bot commented 2024-03-14 17:05:00 +01:00
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Package build started. Download here when ready.

Package build started. [Download here](https://builder.blender.org/download/patch/PR119476) when ready.
Brecht Van Lommel requested review from Sergey Sharybin 2024-03-14 17:05:20 +01:00
Sergey Sharybin approved these changes 2024-03-14 18:09:48 +01:00
Sergey Sharybin left a comment
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TL;DR: LGTM

I don't have any AMD machines handy, so tested on what I had at hands, mainly looking at the correctness of the OIDN picking up the environment variables. Tested on:

  • M2 macOS
  • Windows with A770

I modified the code a bit to

#ifdef _WIN32
    _putenv_s("OIDN_DEVICE_HIP", "0");
    _putenv_s("OIDN_DEVICE_SYCL", "0");
    _putenv_s("OIDN_DEVICE_METAL", "0");
#else
    setenv("OIDN_DEVICE_HIP", "0", true);
    setenv("OIDN_DEVICE_SYCL", "0", true);
    setenv("OIDN_DEVICE_METAL", "0", true);
#endif

Before adding those environment variables the "Use GPU" option was available, after the changes it became grayed out. So think the code will do what it is supposed to for HIP.

TL;DR: LGTM I don't have any AMD machines handy, so tested on what I had at hands, mainly looking at the correctness of the OIDN picking up the environment variables. Tested on: - M2 macOS - Windows with A770 I modified the code a bit to ``` #ifdef _WIN32 _putenv_s("OIDN_DEVICE_HIP", "0"); _putenv_s("OIDN_DEVICE_SYCL", "0"); _putenv_s("OIDN_DEVICE_METAL", "0"); #else setenv("OIDN_DEVICE_HIP", "0", true); setenv("OIDN_DEVICE_SYCL", "0", true); setenv("OIDN_DEVICE_METAL", "0", true); #endif ``` Before adding those environment variables the "Use GPU" option was available, after the changes it became grayed out. So think the code will do what it is supposed to for HIP.
Brecht Van Lommel merged commit 335ff6efab into blender-v4.1-release 2024-03-14 18:18:28 +01:00
Brecht Van Lommel deleted branch disable-oidn-hip 2024-03-14 18:18:31 +01:00
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