https://bugs.kde.org/show_bug.cgi?id=511115
Bug ID: 511115
Summary: Using super+tab keys to switch applications briefly
fades in the desktop wallpaper
Classification: Plasma
Product: kwin
Version First 6.5.0
Reported In:
Platform: openSUSE
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: effects-window-management
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
When using the super + tab key combination to switch between various
applications and their open windows, the desktop image briefly fades partially
in and out of view, even if the prior and next windows to display fill the
screen. This causes distraction, especially if the background image has a lot
of detail.
STEPS TO REPRODUCE
1. Install
https://github.com/openSUSE/wallpapers/blob/master/leap15/tower_lcp.jpg as your
wallpaper / desktop background
2. Open a few applications (this may be more obvious when switching between
applications with a light color theme)
3. Switch between applications by holding the `super` (`meta`) key and
repeatedly press the `tab` key
4. Watch the bottom of the screen
OBSERVED RESULT
The detailed images of plants in the desktop image briefly fade in and out of
view.
EXPECTED RESULT
It would be less distracting and visually smoother if the desktop background
would not show up in areas where the desktop is not visible in the new or old
window arrangement. In other words, the view ideally wouldn't fade out of the
previous window to the desktop background while the new view is fading in over
both.
The old view / rendered screen should fade directly into the new one. This can
be achieved by rendering the previous view against the desktop (which may be
partially or completely blocked by various windows) and rendering the new one
against the desktop in the same way. And then fade between those two views.
If the desktop would appear in either or both views prior to, or as a result of
releasing super+tab, then it would only be visible before and / or after in
those specific areas, otherwise, it would ideally not appear at all.
SOFTWARE/OS VERSIONS
Windows:
macOS:
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: openSUSE Tumbleweed 20251023 (kernel 6.17.4-1-default)
KDE Plasma Version: 6.50
KDE Frameworks Version: 6.19.0
Qt Version: 6.10.0
ADDITIONAL INFORMATION
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