[okular] [Bug 494247] New: Enabling image anti-aliasing in Okular causes images and some text in the PDF to appear blurry and have ghosting artifacts.

[yzlevol]

https://bugs.kde.org/show_bug.cgi?id=494247

            Bug ID: 494247
           Summary: Enabling image anti-aliasing in Okular causes images
                    and some text in the PDF to appear blurry and have
                    ghosting artifacts.
    Classification: Applications
           Product: okular
           Version: 24.08.0
          Platform: Microsoft Windows
                OS: Microsoft Windows
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: guiyuan_studio at 163.com
  Target Milestone: ---

Created attachment 174506
  --> https://bugs.kde.org/attachment.cgi?id=174506&action=edit
pics

SUMMARY
Enabling image anti-aliasing in Okular causes images and some text in the PDF
to appear blurry and have ghosting artifacts, Chinese text in bold appears
unclear, while other content is displayed normally.


STEPS TO REPRODUCE
1. Open Okular and load a PDF file with images and text.
2. Go to Settings -> Configure Okular -> Performance and enable Image
Anti-Aliasing.
3. Observe the PDF content, especially images and certain text areas.

OBSERVED RESULT
Images and some text appear blurry, and ghosting artifacts are visible.

EXPECTED RESULT
Images and text should appear clear and sharp without any ghosting artifacts
after enabling image anti-aliasing.

SOFTWARE/OS VERSIONS
Windows: Win11 24H2
KDE Frameworks Version: 6.6.0
Qt Version: 6.7.2

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