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  1. Qt
  2. QTBUG-98122

QQuickWindow sometimes produces white flickers when resized

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Details

    • Bug
    • Resolution: Unresolved
    • P3: Somewhat important
    • None
    • 6.1.3
    • GUI: Painting, QPA: Windows
    • None
    • Windows 10 Pro 21H1 / build: 19043.1320
      CPU: Intel Core i7-8750H
      GPU: Intel UHD Graphics 630
      RAM: 16 GB
      Qt Version: 6.1.3 msvc2019_64
    • Windows

    Description

      See the attached sample project.

      It will create multiple windows, that are resized every 500ms. Some of them will show a white flicker when resized (If it is not showing the flickering increase the window count)

      To prevent the flickering uncomment the two lines marked in "TestWindow.cpp"

      It will cause the background of the window to be transparent, but the scenegraph is not affected by this change, the black rectangle defined in "main.qml" is still black.

      But I'm not sure what downside this "fix" has, maybe somebody can elaborate.

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              qt.team.quick.subscriptions Qt Quick and Widgets Team
              basti_4tiitoo Bastian Wolfgruber
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              Dates

                Created:
                Updated: