[Bug 52660] New: chunk allocator for GL uniform buffers kills performance in World of Warships
WineHQ Bugzilla
wine-bugs at winehq.org
Sat Mar 12 16:41:02 CST 2022
https://bugs.winehq.org/show_bug.cgi?id=52660
Bug ID: 52660
Summary: chunk allocator for GL uniform buffers kills
performance in World of Warships
Product: Wine
Version: 7.4
Hardware: x86-64
URL: https://worldofwarships.eu/
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: directx-d3d
Assignee: wine-bugs at winehq.org
Reporter: janbraun at gmx.net
Regression SHA1: 86f0ae8efb17ce688986971d24c3e25840a2beef
Distribution: ---
I've found and bisected a huge performance regresssion in World Of Warships:
With 86f0ae8efb17ce688986971d24c3e25840a2beef "wined3d: Use the chunk allocator
for GL uniform buffers." applied, my framerate is around 18-20fps during
gameplay. With that patch reverted, it's back at >=60fps. The code moved around
in the meantime, but simply commenting out the "case GL_UNIFORM_BUFFER:" in
use_buffer_chunk_suballocation() restores performance on wine 7.4 (= current
git HEAD) as well.
I have the subjective impression that other games might be affected too (things
feel a bit more sluggy), but certainly nowhere as severely as WoWS. I didn't
further test/benchmark, however, because WoWS was such a nice reproducer.
Running mesa-21.3.7 on amdgpu. Please holler if you need more info.
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