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  1. Qt
  2. QTBUG-131923

[macOS] CompositionMode_Source shows transparent pixels white

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Details

    • macOS

    Description

      QPainter paints transparent pixels white on macOS with composition mode CompositionMode_Source and image format QImage::Format_RGBX64 (as shown in macos.png). On Windows the pixels are painted black (windows.png).

      The attached example can be used to reproduce the issue.

      Attachments

        1. macos.png
          macos.png
          278 kB
        2. windows.png
          windows.png
          33 kB
        3. sourceComposition.zip
          43 kB
        4. iconcol.zip
          1.0 kB
        5. iconcol_linux.png
          iconcol_linux.png
          15 kB
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            vgt Eirik Aavitsland
            tiheikka Titta Heikkala
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            Dates

              Created:
              Updated:

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