Bug 494247

Summary: Enabling image anti-aliasing in Okular causes images and some text in the PDF to appear blurry and have ghosting artifacts.
Product: [Applications] okular Reporter: yzlevol <guiyuan_studio>
Component: generalAssignee: Okular developers <okular-devel>
Status: REPORTED ---    
Severity: normal    
Priority: NOR    
Version First Reported In: 24.08.0   
Target Milestone: ---   
Platform: Microsoft Windows   
OS: Microsoft Windows   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: pics
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Description yzlevol 2024-10-07 16:04:58 UTC
Created attachment 174506 [details]
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
Comment 1 yzlevol 2024-10-07 16:06:45 UTC
Created attachment 174507 [details]
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Comment 2 yzlevol 2024-10-07 16:07:09 UTC
Created attachment 174508 [details]
pic2