Re: using openGL via SW

[Nikolay Dimitrov <picmaster@mail.bg>]

Hi Daiane,

On 08/28/2015 05:53 PM, Daiane Angolini wrote:
> On Fri, Aug 28, 2015 at 11:02 AM, Prabhu S <prabhusundar@gmail.com> wrote:
>> Thats sounds like poky bug. BSP layer should not cause problem I hope.
>
> Do you know if there is any kernel (3.14) pieces I should double check?
>
> I don't have any DRI on my DISTRO_FEATURE (because I'm using default one)
>
>
> Daiane
>>
>> On Fri, Aug 28, 2015 at 8:32 AM, Daiane Angolini <daiane.list@gmail.com>
>> wrote:
>>>
>>> On Thu, Aug 27, 2015 at 5:09 PM, Otavio Salvador
>>> <otavio.salvador@ossystems.com.br> wrote:
>>>> On Thu, Aug 27, 2015 at 4:30 PM, Daiane Angolini <daiane.list@gmail.com>
>>>> wrote:
>>>>> I'm trying to enable openGL on a not accelerated board (imx7d).  I
>>>>> thought it would be out-of-box  but it is not.
>>>>>
>>>>> I'm using imx7dsabresd machine, and  to be sure added:
>>>>>
>>>>>
>>>>> CORE_IMAGE_EXTRA_INSTALL += "mesa-demos mesa-glut glmark2"
>>>>>
>>>>> on local.conf, and this is the only change on top of master
>>>>> (core-image-x11) But when I try glmark I get an error message
>>>>>
>>>>> $ DISPLAY=:0 glmark2
>>>>> name of display: :0
>>>>> Error: couldn't find RGB GLX visual or fbconfig
>>>>>
>>>>> I get the same error if I try glxgears. But I see the X11 console on
>>>>> screen (typical core-image-x11)
>>>>>
>>>>> Am I missing something obvious?
>>>>
>>>> Try adding mesa-gl in the image.
>>>
>>> I've tried:
>>>
>>> ERROR: Multiple .bb files are due to be built which each provide
>>> virtual/mesa
>>> (/code/yocto/master/sources/poky/meta/recipes-graphics/mesa/mesa-gl_10.6.3.bb
>>>
>>> /code/yocto/master/sources/poky/meta/recipes-graphics/mesa/mesa_10.6.3.bb).
>>>   This usually means one provides something the other doesn't and should.
>>> ERROR: Multiple .bb files are due to be built which each provide
>>> virtual/libgl
>>> (/code/yocto/master/sources/poky/meta/recipes-graphics/mesa/mesa-gl_10.6.3.bb
>>>
>>> /code/yocto/master/sources/poky/meta/recipes-graphics/mesa/mesa_10.6.3.bb).
>>>   This usually means one provides something the other doesn't and should.
>>>
>>> Even if I clean tmp or  mesa
>>>
>>>
>>> Daiane

About the 1st issue - it seems that mesa and mesa-gl are pulled-in at
the same time, both providing virtual/mesa, thus the error message.

The reason is that core-image-x11 pulls-in the mesa-gl explicitly,
instead of using virtual/mesa (which I guess is the proper behavior).

You can verify this:

bitbake -g core-image-x11
grep core-image-x11 pn-depends.dot | grep mesa-gl

Regards,
Nikolay