Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-98122

QQuickWindow sometimes produces white flickers when resized

    XMLWordPrintable

    Details

    • Type: Bug
    • Status: Reported
    • Priority: P3: Somewhat important
    • Resolution: Unresolved
    • Affects Version/s: 6.1.3
    • Fix Version/s: None
    • Component/s: GUI: Painting, QPA: Windows
    • Labels:
      None
    • Environment:
      Windows 10 Pro 21H1 / build: 19043.1320
      CPU: Intel Core i7-8750H
      GPU: Intel UHD Graphics 630
      RAM: 16 GB
      Qt Version: 6.1.3 msvc2019_64
    • Platform/s:
      Windows

      Description

      See the attached sample project.

      It will create multiple windows, that are resized every 500ms. Some of them will show a white flicker when resized (If it is not showing the flickering increase the window count)

      To prevent the flickering uncomment the two lines marked in "TestWindow.cpp"

      It will cause the background of the window to be transparent, but the scenegraph is not affected by this change, the black rectangle defined in "main.qml" is still black.

      But I'm not sure what downside this "fix" has, maybe somebody can elaborate.

        Attachments

        No reviews matched the request. Check your Options in the drop-down menu of this sections header.

          Activity

            People

            Assignee:
            qt.team.quick.subscriptions Qt Quick and Widgets Team
            Reporter:
            basti_4tiitoo Bastian Wolfgruber
            Votes:
            3 Vote for this issue
            Watchers:
            5 Start watching this issue

              Dates

              Created:
              Updated:

                Gerrit Reviews

                There are no open Gerrit changes