Kingdom Come: Deliverance (DXVK) has regressed in performance due to the following kernel commit, with aco-navi:
Author: Tianci.Yin <firstname.lastname@example.org>
Date: Mon Aug 19 15:30:22 2019 +0800
drm/amdgpu/psp: move TMR to cpu invisible vram region
so that more visible vram can be available for umd.
Reviewed-by: Christian König <email@example.com>.
Signed-off-by: Tianci.Yin <firstname.lastname@example.org>
Signed-off-by: Alex Deucher <email@example.com>
With 828d6fde7f57 (62 fps/79% GPU usage):
With 828d6fde7f57 reverted (79 fps, 100% GPU usage):
Tests were with aco-navi branch: https://gitlab.freedesktop.org/Venemo/mesa/tree/aco-navi
Performance with LLVM is comparable with the commit reverted or not, however. Slightly better with the commit since GPU usage is lower for the same performance:
With 828d6fde7f57 (61.4 fps/88% GPU usage):
Without 8d6fde7f57 (61.2 fps/100% GPU usage):
linux-5.4-rc4 (also tested amd-staging-drm-next)
Mesa aco-navi (e641024) and Mesa git (8dadef2ec54)
MSI Evoke 5700 XT
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