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  1. Qt
  2. QTBUG-121779

No alpha channel support for QWindow on XCB

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Details

    • Bug
    • Resolution: Unresolved
    • P2: Important
    • None
    • Some future release
    • QPA: X11/XCB
    • None
    • Linux/X11

    Description

      We seemingly don't have a way to do QWindows with an alpha channel (ie arbitrary opacity, not just per window uniform opacity) on XCB. See https://bugreports.qt.io/browse/QTBUG-116183?focusedId=739850&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-739850

      We do have some trick in the system tray implementation to copy the content from the underlying window, but it's unclear if that can work for GL/Vulkan as well.

       

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          Technical task - A technical task. QTBUG-116183 Investigate QPA/QtGui enablers for window embedding

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              liaqi Liang Qi
              vestbo Tor Arne Vestbø
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                Created:
                Updated:

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