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  1. Qt
  2. QTBUG-52419

Regression: QGraphicsView using QOpenGLWidget as viewport not updated correctly

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Details

    • Bug
    • Resolution: Done
    • P2: Important
    • 5.6.2
    • 5.6.0
    • GUI: OpenGL
    • None
    • OS X 10.11.4 and Arch Linux
    • 61521b64a4b9fc1046e0d16cb84c6181ae85493c

    Description

      It's very simple to reproduce - see attached sources and screenshots. When QGraphicsView using a QOpenGLWidget as a viewport has at least one scrollbar visible, the QGraphicsView contents are often rendered incorrectly.

      I have verified that this does not occur with Qt 5.5.0.

      Attachments

        1. bad.png
          bad.png
          79 kB
        2. good.png
          good.png
          74 kB
        3. gv_glw_flicker_test_case.pro
          0.3 kB
        4. main.cpp
          0.4 kB
        5. qt_fix.patch
          3 kB
        6. qtbug52419.zip
          2 kB

        Issue Links

          resulted from

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-49466 Unwanted QOpenGLWidget updates when docking a widget into same main window

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

              lagocs Laszlo Agocs
              ehvatum Erik Hvatum
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              Dates

                Created:
                Updated:
                Resolved:

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