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Qt5 - vsync problems (tearing)

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  • Q Offline
    Q Offline
    qtd1d1
    wrote on last edited by
    #1

    Hi,

    The vsync problems in Qt 5 Alpha are still there. I am using the eglfs plugin on an i.MX board.
    Although the performance is ok, tearing is visible. The new threading model of scenegraph was supposed to fix this, wasn't it?

    Is this maybe a eglfs plugin problem?

    Best regards

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    • P Offline
      P Offline
      pritamghanghas
      wrote on last edited by
      #2

      this is most likely plugin related. Ask on qt irc or mailing list, people from qt graphics team are very helpful in getting these things resolved.

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      • M Offline
        M Offline
        miskol
        wrote on last edited by
        #3

        I don't know if it solve your problem too
        But it looks like on mali400 eglSwapInterval(egl_display, 1);
        must be after eglMakeCurrent call

        I simply set up eglSwapInterval in
        qtbase/src/platformsupport/eglconvenience/qeglplatformcontext.cpp

        and all works fine

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