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  1. Qt
  2. QTBUG-5636

Low text rendering quality with Graphics View using OpenGL viewport

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    Description

      When using graphic items in a QGraphicsView with an OpenGL viewport, text rendering quality is very low (not to say lousy) with Qt 4.6 beta. This was not the case with Qt 4.5.x under the same hardware/system setup. See attached demo program and screenshots. Detected using QGraphicProxyWidget, but also affects other QGraphicItems which do render text.

      Hardware configuration:

      • Windows XP SP2
      • ATI FireGL V3400
      • Driver Packaging Version 8.583
      • OpenGL Driver Version 6.14.10.8501

      Attachments

        1. diagramscene.zip
          28 kB
        2. GraphicsViewLabelGL.cpp
          0.5 kB
        3. GraphicsViewLabelGL-452.png
          GraphicsViewLabelGL-452.png
          9 kB
        4. GraphicsViewLabelGL-460beta.png
          GraphicsViewLabelGL-460beta.png
          8 kB
        5. testhinting.qml
          0.9 kB

        Issue Links

          replaces

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-8940 distorted fonts on QGraphicsView under opengl

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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              qt.team.quick.subscriptions Qt Quick and Widgets Team
              thomas.epting Thomas Epting
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              Dates

                Created:
                Updated:
                Resolved:

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