iMX6 Qt / EGLFS

iMX6 Qt / EGLFS

[Bell, Andrew [Allen & Heath UK]]

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Hi All

Could someone tell me the current state of next branch for iMX6 solo / dual lite for EGLFS support ?

I'm trying to get Qt 5 with opengl compiled externally against my Yocto generated rootfs - as recommended in a few other threads.

I've removed X11 and wayland from poky.conf then bitbaked the lsb-sdk.

When I point the qt build at the rootfs generated by the SDK, it fails as the the EGL includes / libraries are missing.

I've then transplanted the EGL headers / libraries from the wandboard-dual sysroot within the yocto build tree into the SDK generated sysroot and it gets further but still fails ...

obj/release-shared/qeglfshooks_imx6.o: In function `QEglFSImx6Hooks::createNativeWindow(QSize const&, QSurfaceFormat const&)':
eglfshooks_imx6.cpp:(.text+0x38): undefined reference to `fbCreateWindow'

I've tracked down some conditional code within recipes-graphics in gpu-viv-bin-mx6q which suggests the variant of libEGL.so may be conditional on X11 / Wayland defines to the build.

Does anyone know what library provides the fbCreateWindow create above - do I need a libEGL-fb.so variant ?

There's also hints that I may have to define USE_X11=no to get this conditional EGL build behavior, if so where does this define need to be placed.

Finally does the gpu-viv-bin-mx6q only apply to the quad core version or is this relevant to the solo / dual lite variants ?

Any help appreciated !

Thanks

Andrew.



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Re: iMX6 Qt / EGLFS

[Thomas Senyk]

On Wednesday, 25 September, 2013 14:55:51 Bell, Andrew [Allen & Heath UK] 
wrote:
> Hi All
> 
> Could someone tell me the current state of next branch for iMX6 solo / dual
> lite for EGLFS support ?

It's working flawlessly :)

> 
> I'm trying to get Qt 5 with opengl compiled externally against my Yocto
> generated rootfs - as recommended in a few other threads.
> 
> I've removed X11 and wayland from poky.conf then bitbaked the lsb-sdk.
> 
> When I point the qt build at the rootfs generated by the SDK, it fails as
> the the EGL includes / libraries are missing.
> 
> I've then transplanted the EGL headers / libraries from the wandboard-dual
> sysroot within the yocto build tree into the SDK generated sysroot and it
> gets further but still fails ...

I've added IMAGE_INSTALL += "gpu-viv-bin-mx6q"
 to my image .. you can also use CORE_IMAGE_EXTRA_INSTALL in your local.conf
to make sure it's built and deployed.

> 
> obj/release-shared/qeglfshooks_imx6.o: In function
> `QEglFSImx6Hooks::createNativeWindow(QSize const&, QSurfaceFormat const&)':
> eglfshooks_imx6.cpp:(.text+0x38): undefined reference to `fbCreateWindow'

sounds like you got the wront libEGL.so .. you're sure you don't have X11 in 
your DISTRO_FEATURES?
objdump -x libEGL.so.1  should give you some idea which version it is.


> 
> I've tracked down some conditional code within recipes-graphics in
> gpu-viv-bin-mx6q which suggests the variant of libEGL.so may be conditional
> on X11 / Wayland defines to the build.

yes! Different versions are packaged depening on the DISTRO_FEATURES variable.

> 
> Does anyone know what library provides the fbCreateWindow create above - do
> I need a libEGL-fb.so variant ?

libEGL-fb.so or libEGL-wl.so will do.
libEGL-x11 won't.

> 
> There's also hints that I may have to define USE_X11=no to get this
> conditional EGL build behavior, if so where does this define need to be
> placed.

If you have no X11 in DISTRO_FEATURES then the gpu-viv-bin-mx6q will take the 
right versions!

> 
> Finally does the gpu-viv-bin-mx6q only apply to the quad core version or is
> this relevant to the solo / dual lite variants ?

No, to all of them.
I've running the same binaries on wandboard-solo

> 
> Any help appreciated !
> 
> Thanks
> 
> Andrew.

Re: iMX6 Qt / EGLFS

[Juha Vuolle]

2013/9/27 Thomas Senyk <thomas.senyk@pelagicore.com>:
> On Wednesday, 25 September, 2013 14:55:51 Bell, Andrew [Allen & Heath UK]
> wrote:
>> Hi All
>>
>> Could someone tell me the current state of next branch for iMX6 solo / dual
>> lite for EGLFS support ?
>
> It's working flawlessly :)

Confirm that, beautiful and performant :-)

I had the same issue with EGL library. I didn't look for proper
solution at that point in time but hacked.

If you feel like hacking too:
look for libEGL-fb.so and GAL library under your yocto build directory
and copy them to the sysroot (IIRC  /usr/lib) --> linking should now
pass.
Then do the same on the device to be able to run apps.

Should work.

>
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