[meta-freescale] qt5 xcb gles2

[Juha Vuolle]

After a small hiatus I returned to this and got the qt5 + gles2 + xcb
combination working.
Just to let people know that it is possible. I can now run QtQuick2
apps QGLWidgets etc. hellogl_es2 seems to go closer to 300 FPS.
As an additional cherry on top the x11vnc works with them too.

I took the latest master-nexts of everything, compiled Qt myself and
put a small bruteforce hack into Qt relating to the "incompatable
color depths".
Note: you may have to force the hard floats on in the Qt compilation,
I added "DISTRO_OPTS += hard-float" to the "linux-imx6-g++/qmake.conf
". If you don't do this the likely first symptom is that all Qt's
configure tests fail.

Juha


2013/8/27 Juha Vuolle <juvuolle at gmail.com>:
>> > some polish
>> > If you can try it and provide feedback that would help to get xcb into
>> > master.
>>
>> Thanks appreciated.
>
> Can't yet comment on the real XCB patch as it's still baking, have to
> get back to that later.
>
> In the meanwhile I thought I'd mention I managed to manually compile
> qt5 with xcb support against the master.
> There were some hurdles on the way but I got at least the Qt widget
> applications running on the X (run in the default matchbox window
> manager of my image).
>
> The QtQuick2 and consequently EGL/gles2 didn't at least yet work so great:
>
> root at nitrogen6x:~/helloworld# DISPLAY=:0 ./helloworld
> Qt Warning: Could not find a location of the system's Compose files.
> Consider setting the QTCOMPOSE environment variable.
> Warning: EGL suggested using X Visual ID 33 (RGB565) for EGL config 28
> (RGB444), but this is incompatable
> Unable to find an X11 visual which matches EGL config 28
> Could not initialize EGL
> Aborted
>
> cheers,
> Juha
>
>> > Thanks,
>> > Eric