https://bugs.kde.org/show_bug.cgi?id=507501
Bug ID: 507501
Summary: Feature suggestion: Implement a less demanding fake
blur, e.g. by pre-blurring the desktop wallpaper as a
static texture
Classification: Plasma
Product: kwin
Version First 6.4.2
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: wishlist
Priority: NOR
Component: aurorae
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
On some devices like the Raspberry Pi 5, the blur seems to be a too demanding
effect that leads to extreme lag. However, some themes that use blur seem not
prepared to handle it well if it's disabled, leading e.g. to impossible to read
text in title bars. It would therefore be nice if there was an alternative blur
implementation that was less demanding, based on e.g. pre-blurring the desktop
wallpaper as a static texture and then simply showing parts of that pre-blurred
texture for the blurred areas.
STEPS TO REPRODUCE
1. Use Raspberry Pi 5
2. Enable blur effects for transparent window decoration parts
3. See that it lags and there's no way to have some sort of blur-like
alternative effect that is fast
OBSERVED RESULT
Built-in blur is very demanding on some hardware, there doesn't seem to be some
"low demand blur" which would be nice
EXPECTED RESULT
It would be nice to have some alternate blur variant that is less accurate (by
e.g. just blurring the wallpaper) and less demanding.
SOFTWARE/OS VERSIONS
Windows:
macOS:
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma:
KDE Plasma Version: 6.4.2
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1
ADDITIONAL INFORMATION
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