[Mesa-dev] [BUG] Large slowdown with RADV / Warcraft with latest Mesa from Git.
michel at daenzer.net
Fri Jan 8 18:02:02 UTC 2021
On 2021-01-08 6:16 p.m., Michel Dänzer wrote:
> On 2021-01-08 5:54 p.m., Chris Rankin wrote:
>> I've just noticed a large drop in FPS (from 60 down to 15) when
>> playing World of Warcraft with the latest Mesa from Git.
>> A quick git bisect has identified this commit:
>> 4292fb2139282e6906d4ad2a8be2fd81ed7ca8af is the first bad commit
>> commit 4292fb2139282e6906d4ad2a8be2fd81ed7ca8af
>> Author: Michel Dänzer <mdaenzer at redhat.com>
>> Date: Mon Dec 21 15:41:56 2020 +0100
>> wsi/x11: Use PresentOptionAsync for MAILBOX present mode with
>> This allows Xwayland to forward buffers to the Wayland compositor
>> for fullscreen / undecorated windows, which in turn allows true
>> behaviour in the Wayland compositor.
>> Without this, Xwayland has to emulate the mailbox behaviour itself,
>> which it cannot do as well as the Wayland compositor by design.
>> Reviewed-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
>> src/vulkan/wsi/wsi_common_x11.c | 7 +++++++
>> 1 file changed, 7 insertions(+)
>> I am playing WoW with this release of Wine:
>> And this version of DXVK:
>> Curiously, I am using Xorg rather than Wayland, and so don't
>> understand why this commit should affect me.
> Does the attached patch fix it?
Actually, that would only make a difference if your X server didn't
support the RANDR extension, which seems unlikely.
I found two more bugs:
Still not sure how that could have caused a drop from 60 to 15 fps, but
hopefully this will fix it.
Earthling Michel Dänzer | https://redhat.com
Libre software enthusiast | Mesa and X developer
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