https://bugs.kde.org/show_bug.cgi?id=475808
Bug ID: 475808
Summary: [FeatureRequest] Implement Explicit Sync for xwayland
Classification: Plasma
Product: kwin
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: mmboss...@gmail.com
Target Milestone: ---
SUMMARY
New NVIDIA beta drivers are unusable with xwayland apps (mainly games) on
wayland due to them kind of requiring explicit synchronization now.
Since Plasma 6 wants to be Wayland first it is paramount for explicit sync to
be implemented.
NVIDIA have the biggest market share on gaming setups, unfortunately.
STEPS TO REPRODUCE
1. Use new 545 drivers in a wayland session and a monitor with high refresh
rate (144hz+)
2. Play a demanding game that renders at 70fps
3. Open discord in xwayland mode
OBSERVED RESULT
Check all kind of weird stuff happening, like flickering on screen and old
frames being drawn.
Check discord in xwayland mode also have the famous "rubberbanding"
EXPECTED RESULT
Game is smooth
discord doesn't have the rubberbanding effect
Some links
https://forums.developer.nvidia.com/t/feature-g-sync-freesync-under-wayland-session/220822/46
https://forums.developer.nvidia.com/t/new-545-beta-only-renders-update-game-if-window-is-unfocused-otherwise-it-will-have-0-fps/269759
ADDITIONAL INFORMATION
https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/90
https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/967
https://gitlab.freedesktop.org/xorg/proto/xorgproto/-/merge_requests/59
https://gitlab.freedesktop.org/xorg/xserver/-/issues/1317
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