[okular] [Bug 434111] New: Different scaling of displays creates pixelated output

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=434111

            Bug ID: 434111
           Summary: Different scaling of displays creates pixelated output
           Product: okular
           Version: 20.12.2
          Platform: Microsoft Windows
                OS: Microsoft Windows
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: dueckmann.kerstin at outlook.com
  Target Milestone: ---

Created attachment 136456
  --> https://bugs.kde.org/attachment.cgi?id=136456&action=edit
What a PDF looks like in Okular on the down-scaled display

SUMMARY
As I have my laptop connected to another monitor, I set the zoom for the laptop
to 125 % and the monitor to 100 % so the elements on both screens are roughly
the same size (as both laptop and monitor have a resolution of 1920x1080).
Sadly I cannot put the Okular winodws onto the secondary display (the 100 %
scaled one) as it seems that it cannot handle downscaling.

STEPS TO REPRODUCE
1. Have 2 monitors/displays
2. Set the zoom for Texts, Apps and Elements for primary display higher than
secondary
3. Drag Okular window to secondary display (or open on secondary display
directly, that makes no difference)

OBSERVED RESULT
Text of PDF file is practically unreadable.

EXPECTED RESULT
Text of PDF file scales down with the window.

SOFTWARE/OS VERSIONS
Windows: 10
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Turning off the option in rendering to smooth the edges makes the text even
worse.

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