Bug 397631

Summary: Full-screen applications (e.g. games) are incorrectly scaled in Wayland
Product: [Plasma] kwin Reporter: Ken Vermette <vermette>
Component: wayland-genericAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED FIXED    
Severity: normal CC: kde
Priority: NOR    
Version First Reported In: 5.13.3   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Left is incorrect scale, right is expected result.

Description Ken Vermette 2018-08-19 15:54:20 UTC
Created attachment 114503 [details]
Left is incorrect scale, right is expected result.

When launching a fullscreen (xwayland?) application on a 2x scaled Wayland session, the application will render at native resolution then be upscaled, making only a corner of the application visible. 

This is most apparent in games, applications such as Firefox or VLC are not affected.
Comment 1 David Edmundson 2018-08-19 21:21:57 UTC
Fixed in next kwin (XdgOutput)