https://bugs.kde.org/show_bug.cgi?id=389448
Nate Graham <n...@kde.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Width and height of the |Width and height of the
|window doesn't set |window doesn't set
|correctly on HiDPI screen |correctly on HiDPI screen
|after upgrade to plasma |when using Plasma Qt
|5.12 |scaling on X11
Blocks| |356446
--- Comment #30 from Nate Graham <n...@kde.org> ---
Yes, it makes sense. When using PLASMA_USE_QT_SCALING=1, there's a mismatch in
resolutions because Plasma uses the logical (scaled) resolution while KWin and
KWindowSystem still speak in physical (unscaled) resolutions. This doesn't
happen on Wayland because both of them use the logical resolution there.
As far as I can tell, it's not super feasible to teach KWin to speak logical
resolutions, so we need to convert between the two, probbly by having Yaukaue
multiply the resolution it gets back from KWindowSystem by the device pixel
ratio.
Referenced Bugs:
https://bugs.kde.org/show_bug.cgi?id=356446
[Bug 356446] plasmashell does not respect QT_DEVICE_PIXEL_RATIO on X
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