Suboptimal rendering of images with text on lowdpi screens
when I open a PDF file that contains images with text in them (e.g. scanned pages), the rendering is a bit "ugly" on my lowdpi screen (24", 1920x1200) at some commonly used range of zoom levels.
I only see this with Okular and qpdfview, rendering in Evince, Atril, Zathura is fine.
STEPS TO REPRODUCE
- Open attached file "test.pdf" with Okular or qpdfview.
- Set zoom level to 75% (or up to ~100%).
Text looks "rather ugly". (See also attached screenshot.)
Text looks "clearly readable". (Compare screenshot from same document opened in Evince.)
To reproduce this in a clean environment, I was booting live images of Kubuntu 20.04 and KDE Neon (neon-unstable-20200726-1102.iso).
The original bug report on the KDE bugtracker is here: https://bugs.kde.org/show_bug.cgi?id=424817
Kind regards, Jan