Bug 475642 - Transparent XWayland Windows can have strange artifacts, demonstrated with Oneko and Neko98.
Summary: Transparent XWayland Windows can have strange artifacts, demonstrated with On...
Status: CONFIRMED
Alias: None
Product: kwin
Classification: Plasma
Component: compositing (other bugs)
Version First Reported In: 5.27.8
Platform: Fedora RPMs Linux
: NOR minor
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-10-15 01:13 UTC by Sarah B.
Modified: 2024-01-22 23:50 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

Attachments
A screenshot of both Oneko and Neko98 with identical artifacting. (2.19 KB, image/png)
2023-10-15 01:13 UTC, Sarah B. 		Details
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Description Sarah B. 2023-10-15 01:13:14 UTC 
Created attachment 162314 [details]
A screenshot of both Oneko and Neko98 with identical artifacting.

SUMMARY
On Fedora, running Oneko from the repos, from Flathub, or running Neko98 through Wine results in overlapping frames of animation. They look just fine on the standalone X11 session.

I had a friend of mine running Gnome 44 on NixOS attempt to install and run Oneko, and it looked just fine on Wayland, so I'm guessing this is a KDE specific issue.

I've managed to reproduce it both on my laptop with an AMD CPU/GPU, and on my tablet with an Intel CPU/GPU.

STEPS TO REPRODUCE
1. Run Oneko on KDE Wayland

OBSERVED RESULT
I've attached a screenshot, they look very wrong.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 38, KDE 5.27.8
Comment 1 Zamundaaa 2024-01-22 23:50:31 UTC 
Can confirm. It looks as if the window reported being opaque when it isn't