Thanks Giulio,
Our app has an render thread which use opengl api to draw something like map on 
eglsurface.
So I was thinking about to use  a QGLWidget to render it , just call 
glwidget->makeCurrent() when the render thread ready to draw a frame.
I don't need to embed a QGLWidget to another waylandwindow, just new a 
QGLWidget which is a child of our app mainwindow(qt mainwindow).
I tried to do it ,but got errors like this: "Cannot make QOpenGLContext current 
in a different thread" and crash .
Is my solution theoretically make sense?

Thanks and Best Regards
Steve Zhou


-----Original Message-----
From: Giulio Camuffo [mailto:giuliocamu...@gmail.com] 
Sent: Friday, August 08, 2014 2:54 PM
To: Steve (YiLiang) Zhou
Cc: Filip Piechocki; interest@qt-project.org
Subject: Re: [Interest] Help!! app qt4 upgrade to qt5 for wayland on tizen ivi, 
can't get the QDialog's window handle which can cast to EGLNativeWindowType

2014-08-08 7:52 GMT+03:00 Steve (YiLiang) Zhou <sz...@telecomsys.com>:
> Hi Filip,
>
> I got what you mean, so if I use QGLWidget to get the wl_suface and 
> createeglwindow , it can work theoretically ,right?

You're not supposed to get the wl_surface or anything like that, QGLWidgets 
abstracts it away.
Anyway, this is kinda a moot discussion because currently you can't embed a 
QGLWidget in another window on wayland, the qpa plugin lacks support for it, 
and then the compositor may too (Weston is fine but QtCompositor wouldn't 
support it yet).

So you're out of luck, if you want it working now. Maybe if you say exactly 
what you want to achieve on a high level we can find another way to do it.

--
Giulio


>
>
>
> Thanks and Best Regards
>
> Steve Zhou
>
>
>
> From: Filip Piechocki [mailto:fpiecho...@gmail.com]
> Sent: Friday, August 08, 2014 12:40 PM
> To: Steve (YiLiang) Zhou
> Cc: interest@qt-project.org Interest
>
>
> Subject: Re: [Interest] Help!! app qt4 upgrade to qt5 for wayland on 
> tizen ivi, can't get the QDialog's window handle which can cast to 
> EGLNativeWindowType
>
>
>
> Hi,
> As Giulio wrote, it is not clear what you want to achieve. If you want 
> to draw with OpenGL on a Qt widget, there is a QGLWidget which is 
> supposed for that (or its actual replacement - QOpenGLWidget, but it 
> will be introduced in 5.4 if I'm not wrong here, you can try the 
> latest snapshot). QDialog is not supposed for that.
>
> BR,
> Filip
>
> On Aug 8, 2014 3:57 AM, "Steve (YiLiang) Zhou" <sz...@telecomsys.com> wrote:
>
> Hi Thiago,
> Thanks for your  reply, Giulio did give me some advices to try , but 
> I'm not so familiar with qt and wayland ,so I post the help request 
> here too.
> Can you or Giulio give me some sample codes so that I can get this work?
> Anyway thank you guys very much for your replys.
>
>
>
> Thanks and Best Regards
> Steve Zhou
>
> -----Original Message-----
> From: Thiago Macieira [mailto:thiago.macie...@intel.com]
> Sent: Thursday, August 07, 2014 10:19 PM
> To: interest@qt-project.org
> Cc: Steve (YiLiang) Zhou
> Subject: Re: [Interest] Help!! app qt4 upgrade to qt5 for wayland on 
> tizen ivi, can't get the QDialog's window handle which can cast to 
> EGLNativeWindowType
>
> On Thursday 07 August 2014 15:51:31 Steve  Zhou wrote:
>> Dear all,
>
> Hi Steve
>
> Didn't Giulio reply to you on this very subject on the wayland mailing 
> list?
> Giulio is Qt Wayland's co-maintainer, so his answer there is the best 
> you're going to get.
>
> Is there anything new?
> --
> Thiago Macieira - thiago.macieira (AT) intel.com
>   Software Architect - Intel Open Source Technology Center
>
>
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