https://bugs.kde.org/show_bug.cgi?id=447670
Bug ID: 447670
Summary: KWin Zoom effect glitches on blurry background of
applets
Product: kwin
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: m...@ratijas.tk
Target Milestone: ---
Created attachment 144947
--> https://bugs.kde.org/attachment.cgi?id=144947&action=edit
Demonstation of this zooming bug
SUMMARY
Blurry background is broken with Zoom KWin effect.
STEPS TO REPRODUCE
1. Open any applet from system tray (Show hidden icons works too)
2. Zoom in (Meta++), assuming the default "Zoom" variant — not a Magnifier, nor
a Looking Glass.
3. Move cursor around
OBSERVED RESULT
Background is misrendered: sometimes as mis-positioned blur (as if it follows
the direction opposite to the cursor's movements), in other cases it may not
even be blurred at all.
EXPECTED RESULT
Should not glitch like that.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.23.4
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2
Kernel Version: 5.15.11-arch2-1 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-6700HQ CPU @ 2.60GHz
Memory: 15.6 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 970M/PCIe/SSE2
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