Bug 453604 - Blur glitches on draw call of invisible window (X11 + Wayland).
Summary: Blur glitches on draw call of invisible window (X11 + Wayland).
Status: REPORTED
Alias: None
Product: kwin
Classification: Plasma
Component: effects-various (show other bugs)
Version: 5.24.5
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-05-09 22:33 UTC by Vladislav
Modified: 2022-07-07 01:12 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:

Attachments
bug record (463.65 KB, video/mp4)
2022-05-09 22:33 UTC, Vladislav 		Details
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Description Vladislav 2022-05-09 22:33:49 UTC 
Created attachment 148693 [details]
bug record

*Bug recording attached*

STEPS TO REPRODUCE
1. Have blur enabled.
2. Open following windows:
* 1) Window with frequent draw calls (works with gears from extra/mesa-demos on Arch Linux and mvp) (it also need to be not too big)
* 2) Some fully maximized window (Dolphin works)
* 3) Window with background transparency (works with themed Konsole)
3. Stack (only) those windows in that order, so (1) will be covered with (3)

OBSERVED RESULT
Blur "blinks" in places where on (1) called draw

EXPECTED RESULT
Normal blur

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.24.5
KDE Frameworks Version: 5.93.0
Qt Version: 5.15.3
Kernel Version: 5.17.5-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 12 × AMD Ryzen 5 4600H with Radeon Graphics
Memory: 7,2 GiB of RAM
Graphics Processor: AMD RENOIR
Comment 1 Vladislav 2022-07-02 12:16:43 UTC 
Plasma 5.25.2 update:
Now it's harder to reproduce and looks different.