[meta-freescale] X11 is not working on IMX.6

Fri Nov 29 09:32:02 PST 2013

Hi Sebastien,

Thanks for adding this information, I didn´t work with the OpenCV OCL module yet, as I only see CUDA in the OpenCV cmake config, I thought it only used CUDA.

What is the issues you mentioned in the Vivante OCL driver ? We do have some limitations like size of the kernel (limited number of instructions), but I am not aware of these various issues you mentioned.

Regards,
Andre

From: Sébastien Taylor [mailto:sebastientaylor at gmail.com] On Behalf Of Sébastien Taylor
Sent: Friday, November 29, 2013 3:29 PM
To: Silva Andre-B22958
Cc: Fikret Alim; meta-freescale at yoctoproject.org; Otavio Salvador
Subject: Re: [meta-freescale] X11 is not working on IMX.6

Just to clarify, the OpenCV OCL module is OpenCL not CUDA though they also have a GPU module which is CUDA.  The issue with the OpenCL module on the i.MX6 is that it requires Full Profile.  Many of the algorithms could conceivably be ported to Embedded Profile, but the various issues with the Vivante OpenCL driver would first need to be fixed.

On Nov 29, 2013, at 10:01 AM, Andre Silva <Andre.Silva at freescale.com<mailto:Andre.Silva at freescale.com>> wrote:

Hi Friket,

You are right, the OCL module in OpenCV is CUDA based, it doesn´t work for us. Using OpenCL in this case, you can base on OpenCL embedded profile tutorials you can find in the web also, I created a simple OCL SDK, that provides you a quick start for opencl application, unfortunately it is not available outside Freescale yet, there are some samples there (IP filtering) that you could use, I just need to check if I can share right now.

Regards,
Andre

From: Fikret Alim [mailto:fikret.alim at gmail.com]
Sent: Friday, November 29, 2013 1:14 PM
To: Silva Andre-B22958
Cc: Otavio Salvador; meta-freescale at yoctoproject.org<mailto:meta-freescale at yoctoproject.org>
Subject: Re: [meta-freescale] X11 is not working on IMX.6

Dear Andre,

When I run gesture demo, I get the following console output now;

root at imx6qsabrelite:~/gpu_samp/bin# ./gesture

Using: min: 15, max: 40, val: -1

Yellow: ./gesture 15 40 -1
Skin: ./gesture 5 30 20

Loading netweights...OK

Insufficient buffer memory on /dev/video0 -- decreaseing buffers
Insufficient buffer memory on /dev/video0 -- decreaseing buffers
Insufficient buffer memory on /dev/video0 -- decreaseing buffers
Insufficient buffer memory on /dev/video0 -- decreaseing buffers
Initializing OpenCV...OK
Initializing OGLES2...OK
Creating the Stage...OK
Creating the Theater...OK
Creating the Status Panel...OKError: Resource not found.
Error: Resource not found.

Control Disabled

Now, the application is running, but I can only see black screen on the monitor. There is an error message as seen above, but I didn't have time to check from the software. Do you have an idea about the error message?

I have one more question: Actually I am not interested in OpenGL, because we want to perform image processing. So, OpenCL will be more suitable for us, but I couldn't find any examples other than hello world for IMX.6. I searched if we can use OpenCV OCL module on IMX.6, but I learned that it is not possible. So, if you know a way to use GPU for image processing, please recommend a way to me (such as an example using both OpenCV and OpenCL)

Thanks&Best Regards,
Fikret

On Fri, Nov 29, 2013 at 2:49 PM, Andre Silva <Andre.Silva at freescale.com<mailto:Andre.Silva at freescale.com>> wrote:
Hi Friket,

I was about to ask you about the galcore module, as I always use it as built-in I thought you were using this way too. I´m glad it worked.

About the gesture recognition demo, what is going on ? what kind of errors are you getting ?

Regards,
andre

From: Fikret Alim [mailto:fikret.alim at gmail.com<mailto:fikret.alim at gmail.com>]
Sent: Friday, November 29, 2013 10:19 AM
To: Silva Andre-B22958
Cc: Otavio Salvador; meta-freescale at yoctoproject.org<mailto:meta-freescale at yoctoproject.org>

Subject: Re: [meta-freescale] X11 is not working on IMX.6

Hi again,

Thank you for your answers. I have solved the problems by starting the GPU module

$ modprobe galcore

and with the display setting
$ export DISPLAY=:0.0

By this way I can run the X11 samples on Yocto, but I have still problems with Andre's gesture recognition example :)

I can not compile anything with softfp, because the compiler can not find stubs_soft.h. In Yocto, there is only stubs.h and stubs_hard.h

Best Regards,
Fikret
On Thu, Nov 28, 2013 at 5:47 PM, Andre Silva <Andre.Silva at freescale.com<mailto:Andre.Silva at freescale.com>> wrote:
Hi Guys,

I will need to check that. One question: if you let it as softfp, does it work ?

Regards,
Andre

-----Original Message-----
From: otavio.salvador at gmail.com<mailto:otavio.salvador at gmail.com> [mailto:otavio.salvador at gmail.com<mailto:otavio.salvador at gmail.com>] On Behalf Of Otavio Salvador
Sent: Thursday, November 28, 2013 12:02 PM
To: Fikret Alim; Silva Andre-B22958
Cc: meta-freescale at yoctoproject.org<mailto:meta-freescale at yoctoproject.org>
Subject: Re: [meta-freescale] X11 is not working on IMX.6

Hello Fikret,

On Wed, Nov 27, 2013 at 5:05 AM, Fikret Alim <fikret.alim at gmail.com<mailto:fikret.alim at gmail.com>> wrote:
> I am trying to run X11 examples included in gpu_sdk_v1.00 package. I
> am using Yocto fsl-gui-image. I have tried to run 06_Texturing example
> under
> GLES2.0 folder. I have only modified -mfloat-abi variable in the
> Makefile from softfp to hard. Then I have compiled the code, but
> unfortunately it is not running on IMX.6 board. I got the following
> error message when I try to run ./06_Texturing;
>
> 06_Texturing: ../common/src/fsl_egl.c:51 fsl_getNativeDisplay:
> Assertion 'eglNativeDisplayType != ((void *)0)' failed
>
> Aborted.
>
> What can be wrong? It seems that there is a problem at XOpenDisplay
> function which is called by fsl_getNativeDisplay function. Is there
> anything to be done to enable X11? I checked that the libraries are
> loaded under /usr/libç What should I do?

Andre, do you have any clue?

--
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br<http://www.ossystems.com.br/>        http://code.ossystems.com.br<http://code.ossystems.com.br/>
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