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  1. Qt
  2. QTBUG-111498

QPainter::drawImage() broken on big images when OpenGL is used

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    • 55568b8c6 (dev), 84f5dcf4e (6.5)

    Description

      QPainter::drawImage(const QPointF &point, const QImage &image, const QRectF &source)

      is broken on big images when drawing to a QGraphicsView based on QOpenGLWidget.

      Use the attached example with a big image (my samples are > 8192x8192) to trigger the bug.

      Attachments

        1. opengl_bug.tar.gz
          1 kB
        2. paris_france-mercator.jpg
          paris_france-mercator.jpg
          20.04 MB
        3. screenshot-1.png
          screenshot-1.png
          173 kB

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-111499 multiple QPainter::drawImage() calls are broken when OpenGL is used

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported
          For Gerrit Dashboard: QTBUG-111498
          # Subject Branch Project Status CR V
          463023,4 Increase cache size for QOpenGLTextureCache dev qt/qtbase Status: MERGED +2 0
          463359,2 Increase cache size for QOpenGLTextureCache 6.5 qt/qtbase Status: MERGED +2 0

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            People

              kskau Kristoffer Skau
              tumic Martin Tůma
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              Dates

                Created:
                Updated:
                Resolved:

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