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  1. Qt
  2. QTBUG-62234

QtWebEngine using Qt Quick 2D Renderer displays corruption (garbage) when dragging window between monitors

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P2: Important
    • Resolution: Duplicate
    • Affects Version/s: 5.9.1
    • Fix Version/s: None
    • Component/s: WebEngine
    • Environment:
      Windows 10

      Description

      When dragging a QWebEnginePage between monitors with the OpenGL backend set to Qt Quick 2D Renderer, it renders only a transparent background if setBackgroundColor(Qt::transparent) is used (left webengineview in the project). If the background is not transparent, QWebEnginePage can sometime render garbage (right webengineview in the project). The content is then drawn correctly when manually resizing the window.

      The problem manifests itself in release and debug but in different ways. If the project is compiled in debug, both webengineview will progressively become white after each time the window is dragged between monitors. When using the default 3D rendering backend (QT_OPENGL=desktop), there is no problem.

        Attachments

        1. after_drag.PNG
          after_drag.PNG
          45 kB
        2. before_drag.PNG
          before_drag.PNG
          76 kB
        3. project.zip
          1 kB
        4. QTBUG-62234.zip
          1 kB

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              • Assignee:
                qt_webengine_team Qt WebEngine Team
                Reporter:
                mgenessegrenier Mathieu Genesse-Grenier
              • Votes:
                1 Vote for this issue
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                Dates

                • Created:
                  Updated:
                  Resolved:

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