[Webkit-unassigned] [Bug 119263] New: [Qt] Images are down-scaled badly

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Jul 30 09:06:35 PDT 2013


https://bugs.webkit.org/show_bug.cgi?id=119263

           Summary: [Qt] Images are down-scaled badly
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Qt
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: allan.jensen at digia.com


If images are scaled down more than 2x the scaled result becomes increasingly worse. This is probably caused by QPainter using bilinear sampling, see https://bugreports.qt-project.org/browse/QTBUG-30682 .

To avoid the issue we can prescale the image before sending it to QPainter.

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