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  1. Qt
  2. QTBUG-52672

OpenGL paintengine with cosmetic pens and scaling

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Details

    • Bug
    • Resolution: Unresolved
    • P2: Important
    • None
    • 5.6.0
    • GUI: OpenGL
    • None
    • OpenSuse 13.2

    Description

      When having a transformation matrix ( scaling ) for drawing a painter path with a cosmetic pen, curves ( circles, ellipses ... ) are interpolated wrong.

      The attached code demonstrates the problem, the attached screenshot shows what's going wrong.

      The same issue happens when drawing to an FBO, what indicates a problem of the OpenGL2 paint engine.

      Attachments

        1. glbug.cpp
          1 kB
        2. glbug.png
          glbug.png
          9 kB
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          People

            qt.team.graphics.and.multimedia Qt Graphics Team
            uwe Uwe Rathmann
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            Dates

              Created:
              Updated:

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