[Interest] running directfb on desktop

[Mandeep Sandhu]

During Qt 4 days, you could use qvfb (Q Virtual Frambuffer) for running
applications built for Qt embedded. I'm not sure if it's still valid as Qt5
required openGL support.

Maybe it's possible via the DirectFB openGL extension - DirectFBGL.

HTH,
-mandeep



On Tue, Aug 6, 2013 at 2:14 PM, Juha Vuolle <juvuolle at gmail.com> wrote:

> Hi,
>
> was wondering if it is possible to run qt applications with directfb QPA
> on deskop?
>
> I just tried it but I seem to get segfault at directfb qpa backingstore
> constructor
> IDirectFBWindow *dfbWindow = static_cast<QDirectFbWindow
> *>(window->handle())->dfbWindow();
> where window->handle() is null.
>
> Other than that there are not much errors in the startup logs (some
> joystick related warnings). I see a window flashing quickly.
> I was wondering if I'm missing some obvious stuff I need to setup for this
> to work?
>
> (My setup: lubuntu 13.04, self-compiled about 3 weeks old Qt 5)
>
> any hints appreciated,
> Juha
>
> if its any use:
>
> > ./analogclock -platform directfb
>    ~~~~~~~~~~~~~~~~~~~~~~~~~~| DirectFB 1.2.10 |~~~~~~~~~~~~~~~~~~~~~~~~~~
>         (c) 2001-2008  The world wide DirectFB Open Source Community
>         (c) 2000-2004  Convergence (integrated media) GmbH
>       ----------------------------------------------------------------
>
> (*) DirectFB/Core: Single Application Core. (2012-05-21 06:43)
> (*) Direct/Thread: Started 'VT Switcher' (-1) [CRITICAL OTHER/OTHER 0/0]
> <8388608>...
> (*) Direct/Thread: Started 'Linux Input' (-1) [INPUT OTHER/OTHER 0/0]
> <8388608>...
> (*) DirectFB/Input: Power Button (1) 0.1 (directfb.org)
> (*) Direct/Thread: Started 'Linux Input' (-1) [INPUT OTHER/OTHER 0/0]
> <8388608>...
> (*) DirectFB/Input: Sleep Button (2) 0.1 (directfb.org)
> (*) Direct/Thread: Started 'Linux Input' (-1) [INPUT OTHER/OTHER 0/0]
> <8388608>...
> (*) DirectFB/Input: AT Translated Set 2 keyboard (3) 0.1 (directfb.org)
> (*) Direct/Thread: Started 'Linux Input' (-1) [INPUT OTHER/OTHER 0/0]
> <8388608>...
> (*) DirectFB/Input: VirtualBox USB Tablet (4) 0.1 (directfb.org)
> (*) Direct/Thread: Started 'Linux Input' (-1) [INPUT OTHER/OTHER 0/0]
> <8388608>...
> (*) DirectFB/Input: VirtualBox mouse integration (5) 0.1 (directfb.org)
> (*) Direct/Thread: Started 'Linux Input' (-1) [INPUT OTHER/OTHER 0/0]
> <8388608>...
> (*) DirectFB/Input: ImExPS/2 Generic Explorer Mouse (6) 0.1 (directfb.org)
> (*) Direct/Thread: Started 'Keyboard Input' (-1) [INPUT OTHER/OTHER 0/0]
> <8388608>...
> (*) DirectFB/Input: Keyboard 0.9 (directfb.org)
> (*) Direct/Thread: Started 'Joystick Input' (-1) [INPUT OTHER/OTHER 0/0]
> <8388608>...
>  (!!!)  *** ONCE [Joystick sends JS_EVENT_INIT events, make sure it has
> been calibrated using 'jscal -c'
> ] *** [../../../inputdrivers/joystick/joystick.c:99 in
> joystick_handle_event()]
> (*) DirectFB/Input: Joystick (1) 0.9 (directfb.org)
>  (!!!)  *** WARNING [out of memory] *** [../../../src/core/input.c:1133 in
> init_axes()]
> (*) Direct/Thread: Started 'Joystick Input' (-1) [INPUT OTHER/OTHER 0/0]
> <8388608>...
> (*) DirectFB/Input: Joystick (2) 0.9 (directfb.org)
>  (!!!)  *** WARNING [out of memory] *** [../../../src/core/input.c:1133 in
> init_axes()]
> (*) Direct/Thread: Started 'PS/2 Input' (-1) [INPUT OTHER/OTHER 0/0]
> <8388608>...
> (*) DirectFB/Input: IMPS/2 Mouse (1) 1.0 (directfb.org)
> (*) Direct/Thread: Started 'PS/2 Input' (-1) [INPUT OTHER/OTHER 0/0]
> <8388608>...
> (*) DirectFB/Input: IMPS/2 Mouse (2) 1.0 (directfb.org)
> (*) DirectFB/Genefx: MMX detected and enabled
> (*) DirectFB/Graphics: MMX Software Rasterizer 0.6 (directfb.org)
> (*) DirectFB/Core/WM: Default 0.3 (directfb.org)
> (*) FBDev/Surface: Allocated 640x480 32 bit LUT8 buffer (index 0) at
> offset 0 and pitch 2560.
> (!) [11851:    0.000] --> Caught signal 11 (at 0x10, invalid address) <--
>
>
>
>
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