[Development] QtWayland windows decoration on the Raspberry Pi

[Giulio Camuffo]

2014-12-15 15:43 GMT+02:00 Massimo Callegari <massimocallegari at yahoo.it>:
> Thanks Robin and Laszlo for the replies.
>
> So I take QtWayland is still a work in progress especially on the Pi.
>
> I personally believe QtWayland should have a special regard for the RPi
> platform, as they are abandoning the Xorg server, and looking forward to
> lighter solutions to give users a smoother UI experience. Just my personal
> opinion, don't take me wrong.

I don't think that will happen until the standard Wayland EGL platfom
is available on it, the brcm plugin is kind of a stop-gap measure.
Which shouldn't work when running on Weston, btw. As such, i don't
think you have EGL available. You should get "Using $foo" when
starting a Qt app. What is $foo?
Being a QtWidget application you don't need EGL though, so it should
be fine... unless you're using some QOpenGL* thing.


--
Giulio

>
> As far as I know, the same is not happening on desktop systems, at least not
> in a short term.
>
> If Qt can be a first class option to write applications on the RPi + Wayland
> then you guys have made bingo !
>
> So I guess my current options are to wait if someone ports decoration on the
> brcm backend or go the QtQuick way (which I already started to do)
>
> Thanks again,
> Massimo
>
>
> ________________________________
> Da: Agocs Laszlo <laszlo.agocs at theqtcompany.com>
> A: Robin Burchell <robin+qt at viroteck.net>; Massimo Callegari
> <massimocallegari at yahoo.it>
> Cc: "development at qt-project.org" <development at qt-project.org>
> Inviato: Lunedì 15 Dicembre 2014 13:19
> Oggetto: Re: [Development] QtWayland windows decoration on the Raspberry Pi
>
>
> You are most certainly using the brcm backend since you don't have
> decorations. wayland-egl (the only one that has decoration support atm) does
> not work on the Pi with the default graphics stack. Not sure about the state
> of Mesa.
>
> Cheers,
> Laszlo
>
>
> ________________________________________
>
>
>
> From: development-bounces+laszlo.agocs=theqtcompany.com at qt-project.org
> <development-bounces+laszlo.agocs=theqtcompany.com at qt-project.org> on behalf
> of Robin Burchell <robin+qt at viroteck.net>
> Sent: Monday, December 15, 2014 1:04 PM
> To: Massimo Callegari
> Cc: development at qt-project.org
> Subject: Re: [Development] QtWayland windows decoration on the Raspberry Pi
>
> On Mon, Dec 15, 2014 at 12:37 PM, Massimo Callegari
> <massimocallegari at yahoo.it> wrote:
>> So, my application runs on Maynard using "-platform wayland" but all the
>> windows are not decorated. So basically I have the same result as if I run
>> it on eglfs.
>
> See: https://codereview.qt-project.org/#/c/93128/
>
>> So, my questions to the QtWayland guys are:
>>
>> - have you people already done some tests on Weston/Maynard on the
>> Raspberry
>> Pi ?
>
> I haven't personally touched the Pi since I fried mine a year or more
> ago. I don't know of many other people working on there, either, but
> perhaps there's someone lurking that I don't know of.
>
>> - how could I check which backend the QtWayland QPA is loading ?
>
> The easiest way is probably to just make sure that you have the right
> client buffer integration plugin available. But I'm not sure if the
> regular one even works on the pi - at least I presume there's a reason
> there's a custom integration made available of it.
>
>> - is there any chance to have windows decorations (bradient ?) on the RPi
>> or
>> is it something still being evaluated/developed ?
>
> If someone does the work for it, possibly.
>
> Robin
>
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