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  1. Qt
  2. QTBUG-55162

Flickering artifacts with EGLFS in RGBA8888 mode

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    Description

      When I launch the QML application which contains an animations, then the screen sometimes flickers with an polygons artifacts on whole screen (please see attached screenshoot).

      I have reproduced this even with the standard demo QML application, called as "Samegame", e.g. from the /home/builder/Projects/qt5/qtdeclarative/examples/quick/demos/samegame/ path.

      Also it reprocuces with the Clocks QML application.

      This artifacts appeared only with the RGBA8888 mode (when QT_QPA_EGLFS_FORCE888 is enabled).

      Also I have added some debug output with QSG_INFO=1 (please, see in attachment too).

      Attachments

        1. opengl-bug.png
          opengl-bug.png
          539 kB
        2. sg-log.txt
          2 kB
        3. flickering2.png
          flickering2.png
          550 kB
        4. flickering.png
          flickering.png
          282 kB
        5. qopenglwindow-artefacts.png
          qopenglwindow-artefacts.png
          524 kB
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            lagocs Laszlo Agocs
            kuzulis Denis Shienkov
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              Updated:
              Resolved:

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