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DropShadow doesn't display on Embedded

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  • W Offline
    W Offline
    While_e
    wrote on last edited by While_e
    #1

    So I'm running 5.12 on BBB with an HDMI display, using the linuxfb platform. When I build and run the app on my desktop the QML DropShadow looks perfect. When I cross-compile and run it on the BBB, it runs, no errors or warning about missing libraries or plugins, however the drop shadow doesn't display at all?

    Any insight here? I would expect if it was a library/plugin issue I would at least get a warning in console about it. So the only starting point I have is maybe the linuxfb can't support it for some odd reason? Any workarounds?

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    • W Offline
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      While_e
      wrote on last edited by
      #2

      Suspicions have been confirmed, if I used XCB dropshadow works as expected. So for some using the linuxfb platform is causing the issue.

      raven-worxR 1 Reply Last reply
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      • W While_e

        Suspicions have been confirmed, if I used XCB dropshadow works as expected. So for some using the linuxfb platform is causing the issue.

        raven-worxR Offline
        raven-worxR Offline
        raven-worx
        Moderators
        wrote on last edited by
        #3

        @While_e
        the linuxfb platform plugin doesn't support OpenGL (ES), which is mandatory for the QtGraphicsEffects plugin
        Are you bound to linuxfb? EGLFS would work if you can use it.

        --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
        If you have a question please use the forum so others can benefit from the solution in the future

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        • W Offline
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          While_e
          wrote on last edited by
          #4

          Excellent, thank you for the confirmation. I may try to use eglfs, just don't currently have supporting libraries built just yet. If it becomes an issue that I absolutely have to have graphical effects, I'll head down that road.

          Do you know performance wise how eglfs stands up to linuxfb in the embedded world? I imagine fairly similar. I just know something like xcb is horrifically slow when I tried it the first time.

          raven-worxR 1 Reply Last reply
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          • W While_e

            Excellent, thank you for the confirmation. I may try to use eglfs, just don't currently have supporting libraries built just yet. If it becomes an issue that I absolutely have to have graphical effects, I'll head down that road.

            Do you know performance wise how eglfs stands up to linuxfb in the embedded world? I imagine fairly similar. I just know something like xcb is horrifically slow when I tried it the first time.

            raven-worxR Offline
            raven-worxR Offline
            raven-worx
            Moderators
            wrote on last edited by raven-worx
            #5

            @While_e said in DropShadow doesn't display on Embedded:

            Do you know performance wise how eglfs stands up to linuxfb in the embedded world?

            thats exactly it's purpose. Bring graphics acceleration to embedded devices without much overhead ;)

            Just one note: due to the nature of EGLFS there can only be exactly one window in your application. Just to keep this considered. QtQuickControls2 works just fine, where QtQuickControls1 does not.

            --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
            If you have a question please use the forum so others can benefit from the solution in the future

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