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  1. Qt
  2. QTBUG-48235

window synchronisation issues on resize

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Details

    • Bug
    • Resolution: Duplicate
    • P3: Somewhat important
    • None
    • 5.5.0
    • QPA: Windows
    • None

    Description

      attached projects show some drawing glitches of QOpenGLWindow/QOpenGLWidget:

      in one case, we have a QOpenGLWindow as central widget of a QMainWindow, in the second case, we have a QOpenGLWidget as top-level QWidget.

      it provides two ways to resize the window: via the window handle of the operating system and programmatically (via mouse dragging in the red ogl window content)

      two observations:

      • the first case (QOpenGLWindow in QMainWindow), the content is not in sync with the window decorator, but white glitches can be seen on the right and bottom when resizing
      • in the second case, we see the same white glitches when resizing the QOpenGLWidget via the window handle. when resizing it programatically, the content is not updated, showing black background

      btw, the white glitches can also be seen when resizing qtcreator.

      Attachments

        1. qtbug48235.zip
          11 kB
          Friedemann Kleint
        2. QTBUG-48235.zip
          5 kB
          Jan Arve
        3. resize.gif
          225 kB
          Damien Courtois
        4. resize-flickering.zip
          6 kB
          tim blechmann

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-45105 Resizing Qt applications causes flickering

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

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-46074 QML window application resize not smooth anymore

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

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-55185 Fullscreen QML application flickers if dialog is shown

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-114032 qml application will have ugly dark

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-45105 Resizing Qt applications causes flickering

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

            People

              smd Jan Arve
              timblechmann tim blechmann
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              Dates

                Created:
                Updated:
                Resolved:

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