[Buildroot] the problem with Xorg, QT5 and imx vivant dirver

[Buildroot] the problem with Xorg, QT5 and imx vivant dirver

[Zhaozhou Meng]

Hello,

I'am new to buildroot and I'am working on the buildroot 2016.05 for a
project based on the board nitrogen6x, freescale imx6q.
I want to build the QT5 using eglfs, egl and opengl and the Xorg using the
imx vivant driver.
So I choosed :
X11 as freescale imx-gpu-viv output option ,
xf86-video-imx-viv as X11R7 driver,
QT5 Desktop Opengl as opengl support
and others necessary packages, like gstreamer 1.0 but I didn't choose the
opengl in gst1-plugins-bad.

During the building, I have always the errors with qwidget.so like
[sub-src-mak-first] error 2.

Is there any conflict between the xorg and the QT5 or it is the other
problem ?

Another question is that when I choosed the xf86-video-imx-viv as X11R7
driver, the mesa3D is choosed, it means the imx vivant driver depends on
mesa3D ?

Thanks all of you.

The output of building like this:

ln -s libQt5Widgets.so.5.6.0 libQt5Widgets.so
ln -s libQt5Widgets.so.5.6.0 libQt5Widgets.so.5
ln -s libQt5Widgets.so.5.6.0 libQt5Widgets.so.5.6
rm -f ../../lib/libQt5Widgets.so.5.6.0
mv -f libQt5Widgets.so.5.6.0  ../../lib/
rm -f ../../lib/libQt5Widgets.so
rm -f ../../lib/libQt5Widgets.so.5
rm -f ../../lib/libQt5Widgets.so.5.6
mv -f libQt5Widgets.so ../../lib/
mv -f libQt5Widgets.so.5 ../../lib/
mv -f libQt5Widgets.so.5.6 ../../lib/
Makefile:45 : la recette pour la cible ? sub-src-make_first ? a ?chou?e
make[2]: *** [sub-src-make_first] Erreur 2
package/pkg-generic.mk:195 : la recette pour la cible
? /home/plateau/Zhaozhou/buildroot-2016.05/output/build/qt5base-5.6.0/.stamp_built
?
a ?chou?e
make[1]: ***
[/home/plateau/Zhaozhou/buildroot-2016.05/output/build/qt5base-5.6.0/.stamp_built]
Erreur 2
Makefile:36 : la recette pour la cible ? _all ? a ?chou?e
make: *** [_all] Erreur 2
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[Buildroot] the problem with Xorg, QT5 and imx vivant dirver

[Thomas Petazzoni]

Hello,

On Tue, 2 Aug 2016 17:21:25 +0200, Zhaozhou Meng wrote:
> Hello,
> 
> I'am new to buildroot and I'am working on the buildroot 2016.05 for a
> project based on the board nitrogen6x, freescale imx6q.
> I want to build the QT5 using eglfs, egl and opengl and the Xorg using the
> imx vivant driver.

eglfs is about using Qt5 *without* X.org.

In Qt5, you have the following possibilities

 - linuxfb (raw framebuffer, no acceleration)
 - directfb
 - xcb (which means with X.org support, potentially with OpenGL)
 - eglfs (OpenGL ES without X.org, i.e by using EGL)

> So I choosed :
> X11 as freescale imx-gpu-viv output option ,
> xf86-video-imx-viv as X11R7 driver,
> QT5 Desktop Opengl as opengl support

I don't think you can select Qt5 Desktop OpenGL, as this depends on
full OpenGL support, while the i.MX6 GPU only provides OpenGL ES.

> Another question is that when I choosed the xf86-video-imx-viv as X11R7
> driver, the mesa3D is choosed, it means the imx vivant driver depends on
> mesa3D ?

I'm not sure to remember why Mesa3D is needed for the
xf86-video-imx-viv. Maybe Gary can chime in.

> The output of building like this:
> 
> ln -s libQt5Widgets.so.5.6.0 libQt5Widgets.so
> ln -s libQt5Widgets.so.5.6.0 libQt5Widgets.so.5
> ln -s libQt5Widgets.so.5.6.0 libQt5Widgets.so.5.6
> rm -f ../../lib/libQt5Widgets.so.5.6.0
> mv -f libQt5Widgets.so.5.6.0  ../../lib/
> rm -f ../../lib/libQt5Widgets.so
> rm -f ../../lib/libQt5Widgets.so.5
> rm -f ../../lib/libQt5Widgets.so.5.6
> mv -f libQt5Widgets.so ../../lib/
> mv -f libQt5Widgets.so.5 ../../lib/
> mv -f libQt5Widgets.so.5.6 ../../lib/
> Makefile:45 : la recette pour la cible ? sub-src-make_first ? a ?chou?e
> make[2]: *** [sub-src-make_first] Erreur 2
> package/pkg-generic.mk:195 : la recette pour la cible
> ? /home/plateau/Zhaozhou/buildroot-2016.05/output/build/qt5base-5.6.0/.stamp_built
> ?
> a ?chou?e
> make[1]: ***
> [/home/plateau/Zhaozhou/buildroot-2016.05/output/build/qt5base-5.6.0/.stamp_built]
> Erreur 2
> Makefile:36 : la recette pour la cible ? _all ? a ?chou?e
> make: *** [_all] Erreur 2

Please provide a longer build log: here you're not showing the
interesting message.

Alternatively, please provide the Buildroot .config file that allows to
reproduce the issue.

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

[Buildroot] the problem with Xorg, QT5 and imx vivant dirver

[Zhaozhou Meng]

Hi,

So if I want to use QT5 without Xorg:
I have to use eglfs support and OpenGL ES2 support, at the same time, can I
use the imx-gpu-viv driver for the acceleration ?
I have tried to set the Freescale imx libraries->imx-gpu-viv->output
option->Framebuffer, there is no problem during the building, but I don't
know if it will accelerate the output of QT5 ?


The second way that I have tired is to use QT5 under Xorg:
Xorg X Window Sytem -> X11R7 Drivers -> x86-video-fbdev &&
x86-video-fbturbo
Freescale imx libraries -> imx-gpu-viv -> output option -> Framebuffer
QT5 -> OpenGL API -> OpenGL ES 2.0 +
QT5 -> Xorg XCB support
QT5-> eglfs support

With the options above, there is no problems during the buidling or running
the Xorg and QT5 (-platform xcb and eglfs both work) on the nitrogen6
board. It works perfectly.

But I changed the option to this:
Xorg X Window Sytem -> X11R7 Drivers -> x86-video-imx-viv (with Mesa3D
selected automatic)
Freescale imx libraries -> imx-gpu-viv -> output option -> X11
QT5 -> OpenGL API -> OpenGL ES 2.0 +
QT5 -> Xorg XCB support
QT5-> eglfs support

With this option, I have the problem with QT Widget during the building.

I attache the config file and the infomations about build.

I didn't find the intresssting infomation in the output of building.

Thanks,

Best Regards
Zhaozhou


2016-08-02 21:30 GMT+02:00 Thomas Petazzoni <
thomas.petazzoni@free-electrons.com>:

> Hello,
>
> On Tue, 2 Aug 2016 17:21:25 +0200, Zhaozhou Meng wrote:
> > Hello,
> >
> > I'am new to buildroot and I'am working on the buildroot 2016.05 for a
> > project based on the board nitrogen6x, freescale imx6q.
> > I want to build the QT5 using eglfs, egl and opengl and the Xorg using
> the
> > imx vivant driver.
>
> eglfs is about using Qt5 *without* X.org.
>
> In Qt5, you have the following possibilities
>
>  - linuxfb (raw framebuffer, no acceleration)
>  - directfb
>  - xcb (which means with X.org support, potentially with OpenGL)
>  - eglfs (OpenGL ES without X.org, i.e by using EGL)
>
> > So I choosed :
> > X11 as freescale imx-gpu-viv output option ,
> > xf86-video-imx-viv as X11R7 driver,
> > QT5 Desktop Opengl as opengl support
>
> I don't think you can select Qt5 Desktop OpenGL, as this depends on
> full OpenGL support, while the i.MX6 GPU only provides OpenGL ES.
>
> > Another question is that when I choosed the xf86-video-imx-viv as X11R7
> > driver, the mesa3D is choosed, it means the imx vivant driver depends on
> > mesa3D ?
>
> I'm not sure to remember why Mesa3D is needed for the
> xf86-video-imx-viv. Maybe Gary can chime in.
>
> > The output of building like this:
> >
> > ln -s libQt5Widgets.so.5.6.0 libQt5Widgets.so
> > ln -s libQt5Widgets.so.5.6.0 libQt5Widgets.so.5
> > ln -s libQt5Widgets.so.5.6.0 libQt5Widgets.so.5.6
> > rm -f ../../lib/libQt5Widgets.so.5.6.0
> > mv -f libQt5Widgets.so.5.6.0  ../../lib/
> > rm -f ../../lib/libQt5Widgets.so
> > rm -f ../../lib/libQt5Widgets.so.5
> > rm -f ../../lib/libQt5Widgets.so.5.6
> > mv -f libQt5Widgets.so ../../lib/
> > mv -f libQt5Widgets.so.5 ../../lib/
> > mv -f libQt5Widgets.so.5.6 ../../lib/
> > Makefile:45 : la recette pour la cible ? sub-src-make_first ? a ?chou?e
> > make[2]: *** [sub-src-make_first] Erreur 2
> > package/pkg-generic.mk:195 : la recette pour la cible
> > ?
> /home/plateau/Zhaozhou/buildroot-2016.05/output/build/qt5base-5.6.0/.stamp_built
> > ?
> > a ?chou?e
> > make[1]: ***
> >
> [/home/plateau/Zhaozhou/buildroot-2016.05/output/build/qt5base-5.6.0/.stamp_built]
> > Erreur 2
> > Makefile:36 : la recette pour la cible ? _all ? a ?chou?e
> > make: *** [_all] Erreur 2
>
> Please provide a longer build log: here you're not showing the
> interesting message.
>
> Alternatively, please provide the Buildroot .config file that allows to
> reproduce the issue.
>
> Best regards,
>
> Thomas
> --
> Thomas Petazzoni, CTO, Free Electrons
> Embedded Linux, Kernel and Android engineering
> http://free-electrons.com
>
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[Buildroot] the problem with Xorg, QT5 and imx vivant dirver

[Thomas Petazzoni]

Hello,

Cc'ing Gary, our i.MX6 expert.

On Wed, 3 Aug 2016 11:03:28 +0200, Zhaozhou Meng wrote:

> So if I want to use QT5 without Xorg:
> I have to use eglfs support and OpenGL ES2 support, at the same time, can I
> use the imx-gpu-viv driver for the acceleration ?

Well, imx-gpu-viv is precisely what provides the OpenGL ES
implementation.

> I have tried to set the Freescale imx libraries->imx-gpu-viv->output
> option->Framebuffer, there is no problem during the building, but I don't
> know if it will accelerate the output of QT5 ?

It will.

> The second way that I have tired is to use QT5 under Xorg:
> Xorg X Window Sytem -> X11R7 Drivers -> x86-video-fbdev &&
> x86-video-fbturbo

No, you need to use the Vivante X.org driver.

> Freescale imx libraries -> imx-gpu-viv -> output option -> Framebuffer

No, you need to enable the X11 output
(BR2_PACKAGE_IMX_GPU_VIV_OUTPUT_X11).

> QT5 -> OpenGL API -> OpenGL ES 2.0 +
> QT5 -> Xorg XCB support
> QT5-> eglfs support

eglfs support is not needed in this case, as far as I know.

> But I changed the option to this:
> Xorg X Window Sytem -> X11R7 Drivers -> x86-video-imx-viv (with Mesa3D
> selected automatic)
> Freescale imx libraries -> imx-gpu-viv -> output option -> X11
> QT5 -> OpenGL API -> OpenGL ES 2.0 +
> QT5 -> Xorg XCB support
> QT5-> eglfs support
> 
> With this option, I have the problem with QT Widget during the building.
> 
> I attache the config file and the infomations about build.

I'll fire up a build and see what happens. Gary, do you have an idea?

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

[Buildroot] the problem with Xorg, QT5 and imx vivant dirver

[Gary Bisson]

Hi all,

On Wed, Aug 3, 2016 at 11:53 AM, Thomas Petazzoni
<thomas.petazzoni@free-electrons.com> wrote:
> <snip>
>> But I changed the option to this:
>> Xorg X Window Sytem -> X11R7 Drivers -> x86-video-imx-viv (with Mesa3D
>> selected automatic)
>> Freescale imx libraries -> imx-gpu-viv -> output option -> X11
>> QT5 -> OpenGL API -> OpenGL ES 2.0 +
>> QT5 -> Xorg XCB support
>> QT5-> eglfs support
>>
>> With this option, I have the problem with QT Widget during the building.
>>
>> I attache the config file and the infomations about build.
>
> I'll fire up a build and see what happens. Gary, do you have an idea?

Yes I confirm it is not working. It has been reported by Antoine
T?nart in the past, see this thread:
http://lists.busybox.net/pipermail/buildroot/2016-March/154974.html

At the end of the thread, two solutions were offered, none has been chosen yet.

But as a summary, even if fixing the eglfs build can be done, at
runtime you wouldn't be able to use it while X11 is running. Is this
really what you want to do?

In Yocto, my understanding is that they force the '-no-eglfs'
configuration when X11 is enabled:
https://github.com/Freescale/meta-fsl-arm/blob/master/qt5-layer/recipes-qt/qt5/qtbase_%25.bbappend#L12

Regards,
Gary

[Buildroot] the problem with Xorg, QT5 and imx vivant dirver

[Zhaozhou Meng]

Thanks for the infomations that help me a lot.

Not really for using the QT eglfs under X11.
I know it will override the X11 if I do that, the elgfs is setted
fullscreen display, beside that, is there other reason that I wouldn't be
able to use it ?


Regards,
Zhaozhou

2016-08-03 14:57 GMT+02:00 Gary Bisson <gary.bisson@boundarydevices.com>:

> Hi all,
>
> On Wed, Aug 3, 2016 at 11:53 AM, Thomas Petazzoni
> <thomas.petazzoni@free-electrons.com> wrote:
> > <snip>
> >> But I changed the option to this:
> >> Xorg X Window Sytem -> X11R7 Drivers -> x86-video-imx-viv (with Mesa3D
> >> selected automatic)
> >> Freescale imx libraries -> imx-gpu-viv -> output option -> X11
> >> QT5 -> OpenGL API -> OpenGL ES 2.0 +
> >> QT5 -> Xorg XCB support
> >> QT5-> eglfs support
> >>
> >> With this option, I have the problem with QT Widget during the building.
> >>
> >> I attache the config file and the infomations about build.
> >
> > I'll fire up a build and see what happens. Gary, do you have an idea?
>
> Yes I confirm it is not working. It has been reported by Antoine
> T?nart in the past, see this thread:
> http://lists.busybox.net/pipermail/buildroot/2016-March/154974.html
>
> At the end of the thread, two solutions were offered, none has been chosen
> yet.
>
> But as a summary, even if fixing the eglfs build can be done, at
> runtime you wouldn't be able to use it while X11 is running. Is this
> really what you want to do?
>
> In Yocto, my understanding is that they force the '-no-eglfs'
> configuration when X11 is enabled:
>
> https://github.com/Freescale/meta-fsl-arm/blob/master/qt5-layer/recipes-qt/qt5/qtbase_%25.bbappend#L12
>
> Regards,
> Gary
>
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[Buildroot] the problem with Xorg, QT5 and imx vivant dirver

[Gary Bisson]

Hi,

On Wed, Aug 3, 2016 at 5:42 PM, Zhaozhou Meng <mengzhaozhou@gmail.com> wrote:
> Thanks for the infomations that help me a lot.
>
> Not really for using the QT eglfs under X11.
> I know it will override the X11 if I do that, the elgfs is setted fullscreen
> display, beside that, is there other reason that I wouldn't be able to use
> it ?

Please read the EGLFS definition from Qt documentation:
http://doc.qt.io/qt-5/embedded-linux.html

"EGLFS is a platform plugin for running Qt5 applications on top of EGL
and OpenGL ES 2.0 without an actual windowing system (like X11 or
Wayland)."

The reason is that the windowing system such as X11 leverages the
available GPU/graphics libraries (in this case the Vivante GPU3D) so
EGLFS cannot access it at the same time.

Regards,
Gary

[Buildroot] the problem with Xorg, QT5 and imx vivant dirver

[gomsis]

I have applied configuration below in buildroot 2017.08

I applied patch  https://patchwork.ozlabs.org/patch/742261/ to enable
webengine

Target packages->Hardware handling->Freescale imx libraries->imx-gpu-vi
Target packages->Graphic libraries-> QT5->opengl support and eglfs support

I disable x11 and mesa3d.
there is problem while compiling with this configuration

 when I run demobrowser from qt with eglfs it crash and says "Could not open
egl display"
 when I run it with directfb, it accupies half of the CPU so GPU does not
start.




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