https://bugs.kde.org/show_bug.cgi?id=527335
Bug ID: 527335
Summary: Icons look pixelated with third-party styles
Classification: Frameworks and Libraries
Product: frameworks-qqc2-desktop-style
Version First 6.30.0
Reported In:
Platform: NixOS
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected]
Target Milestone: ---
Created attachment 197279
--> https://bugs.kde.org/attachment.cgi?id=197279&action=edit
Broken icon rendering
DESCRIPTION
Icons in QML apps look very broken, look at the screenshot
STEPS TO REPRODUCE
1. Use Kvantum
2. Use fractional scaling or multiple screens with different scaling so that
QApplication::devicePixelRatio != QWindow::devicePixelRatio
OBSERVED RESULT
Icons in QML apps look broken while widget apps look good
EXPECTED RESULT
Both look good
SOFTWARE/OS VERSIONS
Operating System: NixOS 26.11
KDE Plasma Version: 6.7.5
KDE Frameworks Version: 6.30.0
Qt Version: 6.11.2
Kernel Version: 6.12.111 (64-bit)
Graphics Platform: Wayland
ADDITIONAL INFORMATION
Widget apps aren't affected since Qt uses SmoothPixmapTransform for real
widgets since 6.4:
https://github.com/qt/qtbase/commit/c78ec505293ed576779c0ee7342746cde39281d6. I
believe qqc2-desktop-style better do the same as what Qt does since the point
of its existing is emulating how Qt renders the style as far as I understand.
I tried to ask Kvantum to render with the right DPR but he made it in a way so
that only real widget apps get the fix:
https://github.com/tsujan/Kvantum/issues/976#issuecomment-6235535173
Someone already tried to make it for Oxygen but then fixed in Oxygen instead:
https://invent.kde.org/frameworks/qqc2-desktop-style/-/merge_requests/527. I
could re-submit it if that's acceptable.
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