https://bugs.kde.org/show_bug.cgi?id=446674
Bug ID: 446674
Summary: In Wayland with fractional scaling fonts and images
are washed off
Product: kwin
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: meve...@gmail.com
Target Milestone: ---
Wayland exposes to applications only integer values of scale factor, that is
the user set a scale to 1.75, and apps receive a scale factor of 2.
Then at rendering apps renders themselves at 2x and the compositor (KWin)
scales them down to 1.75, downscaling the rendering, washing off details of the
application render.
Fonts are most visible but images are concerned as well.
This is not exclusive to KWin and it is a general current shortcoming of
wayland protocols and architecture.
It is reported upstream at
https://gitlab.freedesktop.org/wayland/wayland-protocols/-/issues/47
This is a well known issue in the community:
https://www.reddit.com/r/kde/comments/lficfe/wayland_fractional_scaling_may_be_sort_of_a/
https://www.reddit.com/r/kde/comments/pfvl9j/wayland_fractional_scaling_may_be_sort_of_a/
This bug is just a bug to keep track of the issue in our bug tracker as it will
require kwin work to get fixed in plasma anyway.
https://bugs.kde.org/show_bug.cgi?id=438401 seems related.
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