Bug 44536 - [r300g] bisected - performance regression on 0ad
Summary: [r300g] bisected - performance regression on 0ad
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/Gallium/r300 (show other bugs)
Version: git
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Default DRI bug account
QA Contact:
Depends on:
Reported: 2012-01-06 09:18 UTC by Fabio Pedretti
Modified: 2019-09-18 18:50 UTC (History)
3 users (show)

See Also:
i915 platform:
i915 features:


Description Fabio Pedretti 2012-01-06 09:18:46 UTC
This commit [1] lowers 0 A.D. performance from ~28 fps to ~20 fps, confirmed with LIBGL_SHOW_FPS=1 mesa variable and with in game FPS counter. This is on 0ad alpha 8 on default Oasis map. Tested with current mesa git up to e60daf7 with and without the [1] commit reverted.

The card is:
r300: DRM version: 2.9.0, Name: ATI RV530, ID: 0x71c5, GB: 1, Z: 2
r300: GART size: 509 MB, VRAM size: 256 MB
r300: AA compression RAM: YES, Z compression RAM: YES, HiZ RAM: YES

[1] http://cgit.freedesktop.org/mesa/mesa/commit/?id=93f4e3cb6c1ca303ee1f5c2a2491a8eff33f2633

commit 93f4e3cb6c1ca303ee1f5c2a2491a8eff33f2633
Author: Marek Olšák <maraeo@gmail.com>
Date:   Sat Dec 24 08:15:40 2011 +0100

    winsys/radeon: move managing GEM domains back to drivers
    This partially reverts commit 363ff844753c46ac9c13866627e096b091ea81f8.
    It caused severe performance drops in Nexuiz. Reported by Phoronix.
    Tested by me on r300g and by IRC people on r600g.
Comment 1 Marek Olšák 2012-01-06 13:54:57 UTC
If I revert that commit, Nexuiz will be slow again. I can't do that.
Comment 2 Fabio Pedretti 2012-01-07 03:51:35 UTC
That's fair. But would be eventually possible to improve it to get max performance on both games?
Comment 3 GitLab Migration User 2019-09-18 18:50:38 UTC
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