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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] 37 points 11 months ago (1 children)

Your CPU compiles shaders, the GPU runs them. Vulkan shader pre-processing is a form of pre-compiling all the possible shaders your GPU might need before it runs the game (to avoid stutters and freezes later). This is done on the CPU.

[–] [email protected] 3 points 11 months ago

Thanks! Makes sense. I saw "shaders" and linked it to the GPU.