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  1. Qt
  2. QTBUG-9072

Transparent parts of QPixmaps are sometimes displayed as black

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Details

    • Bug
    • Resolution: Done
    • P2: Important
    • 4.7.1
    • 4.6.2
    • Image formats
    • None
    • Linux X11
    • bcafe4a3dde9986ecfdeea43dc592b6f54134893

    Description

      Transparent parts of QPixmaps are sometimes displayed as black.
      For some pixmaps, it depends on th size they are displayed (scaling).

      I'll attach example code with two of those icons.
      The transparent parts of icon "multilink.png" are always displayed as black.

      Tested on different systems with different graphics hardware (nVidia, ATI), drivers (Closed-Source and Open-Source).
      This is regression that has been introduce between Qt 4.5.3 and 4.6.2.

      Attachments

        1. connected.png
          connected.png
          0.3 kB
        2. main.cpp
          0.7 kB
        3. multilink.png
          multilink.png
          0.1 kB
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          People

            kkalland Kim Motoyoshi Kalland (Inactive)
            schaeferf Frank Schaefer
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            Dates

              Created:
              Updated:
              Resolved:

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