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EGLFS create a fullscreen QML with two monitors

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  • M Offline
    M Offline
    matzrm
    wrote on last edited by
    #1

    With EGLFS is possibile have a fullscreen app across two monitors?

    If yes, how I can achieve this.

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi,

      AFAIK, it's going to depend on the graphics card you use and its driver. If not supported out of the box, using Wayland or Xorg might also be a solution.

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

      M 1 Reply Last reply
      0
      • SGaistS SGaist

        Hi,

        AFAIK, it's going to depend on the graphics card you use and its driver. If not supported out of the box, using Wayland or Xorg might also be a solution.

        M Offline
        M Offline
        matzrm
        wrote on last edited by
        #3

        @SGaist Hi the device is raspberry pi 4 with fkms.
        In this moment I can draw on Screen 1 and on Screen 2 but I don't want this. I want create an unique Window. Do you think is possibile with EGLFS create a virtual output based on two physical display devices?

        SGaistS 1 Reply Last reply
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        • M matzrm

          @SGaist Hi the device is raspberry pi 4 with fkms.
          In this moment I can draw on Screen 1 and on Screen 2 but I don't want this. I want create an unique Window. Do you think is possibile with EGLFS create a virtual output based on two physical display devices?

          SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #4

          You can check the eglfs_kms backend.

          Interested in AI ? www.idiap.ch
          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

          M 1 Reply Last reply
          0
          • SGaistS SGaist

            You can check the eglfs_kms backend.

            M Offline
            M Offline
            matzrm
            wrote on last edited by
            #5

            @SGaist The docs doesn't talk about create a single fullscreen window for multi-screen setup, but describes how to create a window for each screen.

            Furthermore the doc speak about virtual desktop, but I think only to handle mouse pointer or touch.

            My question remains whether it is possible or not, because the doc not exclude it.

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