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  1. Qt
  2. QTBUG-52419

Regression: QGraphicsView using QOpenGLWidget as viewport not updated correctly

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

      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.

        1. qtbug52419.zip
          2 kB
        2. qt_fix.patch
          3 kB
        3. main.cpp
          0.4 kB
        4. gv_glw_flicker_test_case.pro
          0.3 kB
        5. good.png
          good.png
          74 kB
        6. bad.png
          bad.png
          79 kB
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            lagocs Laszlo Agocs
            ehvatum Erik Hvatum
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              Created:
              Updated:
              Resolved:

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