this post was submitted on 22 Nov 2023
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Linux Gaming

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Steam using CPU to process vulkan shaders instead of GPU? (kbin.social)
submitted 11 months ago by [email protected] to c/[email protected]
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Hey all, I have a RTX 3060 and a Ryzen 5600G and I'm on Ubuntu 22.04. Since Steam has shader pre-processing on Linux I thought I'd ask on a Linux gaming community about this. I noticed that when Steam processes Vulkan shaders, it uses the CPU (my CPU heats up a lot and the process manager shows CPU being used while GPU is not used at all). Is there a way to make Steam use the GPU to process Vulkan shaders instead, or am I wrong and Vulkan shaders have to be processed on CPU? I'd presume that things like shaders would process faster on a GPU (it takes a long time for them to process on the CPU). Anyone know anything about this?

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[–] [email protected] 27 points 11 months ago (1 children)

I don't believe that there's a shader compiler that runs on the GPU.

[–] [email protected] 0 points 11 months ago (1 children)

Valve created the ACO shader compiler, but it's only for AMD GPUs.

[–] [email protected] 17 points 11 months ago (1 children)

ACO runs on the CPU.

The output it produces is for AMD GPUs.

[–] [email protected] 1 points 11 months ago

Oh, my bad. I think I misremembered.