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  1. Qt
  2. QTBUG-95957

Scaled pixmap with ellipse clipping leaves lines in output

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Details

    • Bug
    • Resolution: Done
    • P3: Somewhat important
    • 6.2.5, 6.3.0 Beta3, 6.4.0 Beta1
    • 6.1.2
    • GUI: High-DPI
    • None
    • Windows 10, QT 6.1.2
    • Windows
    • 423b650938 (qt/qtbase/dev) 423b650938 (qt/tqtc-qtbase/dev) 5db7260975 (qt/qtbase/6.3) 5db7260975 (qt/tqtc-qtbase/6.3) 5db7260975 (qt/tqtc-qtbase/6.3.0) 3127e73bd6 (qt/tqtc-qtbase/6.2)

    Description

      Drawing a scaled-down pixmap with a circular clipping on windows with window scaling of 125 % does not cover the complete area. Lines within the area a drawn with the background.

      100% and 150% scaling seem to be fine.

      Screenshot attached to illustrate problem. Source code attached as well.

      Attachments

        1. Overscale.zip
          8 kB
        2. screenshot.PNG
          screenshot.PNG
          24 kB

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-99369 Garbage white lines using QPainter::fillRect() with QWidget::setMask(..., QRegion::Ellipse) at 175% DPI

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Activity

            People

              sorvig Morten Sørvig
              jsundermeyer Jan Sundermeyer
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              Dates

                Created:
                Updated:
                Resolved: