https://bugs.freedesktop.org/show_bug.cgi?id=111340
Bug ID: 111340
Summary: [LLVM] DIRT 3 horrible performance when Shadows set to
very high
Product: Mesa
Version: git
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/Vulkan/radeon
Assignee: mesa-dev@lists.freedesktop.org
Reporter: gr.mue...@gmail.com
QA Contact: mesa-dev@lists.freedesktop.org
Once you set Shadows to very high in the Options Menu the game slows down. You
have to use DXVK to run the game, version doesnt matter.
I already reported this last year when I was still using my Radeon HD 7970:
https://github.com/doitsujin/dxvk/issues/67#issuecomment-421925690
The game takes a nose dive from 134 to 29 fps once you switch the settings.
I tried today with my new Vega 56 and ACO:
with LLVM: 72,5 fps
with ACO: 206,3 fps
So we finally have the proof that LLVM is causing this. This might be the same
problem we have with the long standing and still valid bug:
https://bugs.freedesktop.org/show_bug.cgi?id=100069
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