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Thread: Qt5.5 screen rotation with eglfs

  1. #1
    Join Date
    May 2009
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    Default Qt5.5 screen rotation with eglfs

    I'm using Qt5.5 with eglfs acceleration. I wrote small qml application which will run onam335x hw (beaglebone black) and would like to rotate screen to 9 degrees. In Qt4 there was rotation parameter in qws but it's not true anymore for qt5. I found also bug https://bugreports.qt.io/browse/QTBUG-39959 but patch doesn't apply anymore as custom egl compositor was removed (moved to opengl compositor). I tried to apply patch to opengl compositor but it doesn't work. Any ideas how to rotate scree other way (there isn't HW rotation supported on BBB). Thanks.

    Marek

  2. #2
    Join Date
    Dec 2016
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    Default Re: Qt5.5 screen rotation with eglfs

    Hi Marek,

    Have you found a solution? I'm also having the same problem

  3. #3
    Join Date
    Mar 2017
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    Default Re: Qt5.5 screen rotation with eglfs

    Hi,

    I have the same issue. Any idea how to correctly change qopenglcompositor.cpp to get screen rotated by 90 degrees ccw?

    BR stns

  4. #4
    Join Date
    Dec 2015
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    Unix/X11 Windows

    Default Re: Qt5.5 screen rotation with eglfs

    Hi,

    ./your_aaplication_name -qws -display transformed:rot270&\

    Change the number 270 to adjust your app screen rotation.

    Kind Regards,

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