Re: [PyOpenGL-Users] Building on OSMesa

[Yuan Xu <xuy...@gm...>]

Hi Alejandro,

Thank you very much for your suggestion. I am using PyQt,
but I have digged into PyOpenGL, and find a solution: create a platform
plugin for osmesa.
I put my patch in github (https://github.com/xuyuan/PyOSMesa), maybe others
are interested in it.

I will also take a look at QGLPixelBuffer if I have time.


On Fri, Jan 6, 2012 at 11:21 PM, Alejandro Segovia <as...@gm...>wrote:

> Hello,
>
> I remember I struggled with a similar situation back in 2008. It was a
> commercial project in C++ and the client had the exact same requirement.
>
> I ended up solving the issue using Qt, which we were already using anyway.
> I believe the class that did the trick was QGLPixelBuffer, but don't take
> my word for it, since I've forgotten the details since then.
>
> If using Qt (PySide/PyQt) is an option for you, I would recommend you have
> a look at it.
>
> Good luck,
> Alejandro.-
>
> 2012/1/6 Yuan Xu <xuy...@gm...>
>
>> Hi Ian,
>>
>> Thanks for your reply.
>>
>> My problem is how to set up OpenGL context without X, because the target
>> application will run on a headless Linux server, and generating pictures
>> without window.
>>
>> I think if I have PyOpenGL use Mesa only, then my problem can be solved.
>>
>> On Fri, Jan 6, 2012 at 12:41 AM, Ian Mallett <geo...@gm...>wrote:
>>
>>>  On Thu, Jan 5, 2012 at 9:31 AM, Yuan Xu <xuy...@gm...> wrote:
>>>
>>>> Hi all,
>>>>
>>>> I am trying to use PyOpenGL for off-screen rendering (generating
>>>> pictures), AFAIK, OSMesa is the easy (only?) way for this.
>>>>
>>>> I tried to access OSMesa from python via ctypes, the functions in
>>>> OSMesa can be called, but PyOpenGL can not use OSMesaContext, I guess the
>>>> problem is my PyOpenGL (from ubuntu rep) was not build on mesa.
>>>>
>>>> So, my question is how to build PyOpenGL on OSMesa, since I didn't find
>>>> any instruction for configuring building.
>>>>
>>>> Thanks in advance!
>>>>
>>>> --
>>>> Best Regards,
>>>>
>>>> Xu, Yuan
>>>
>>> I'm afraid I can't help with the actual question, but I'd like to remind
>>> you that using FBOs for offscren rendering is easier and faster (although
>>> you *do* need an OpenGL context to set it up).
>>>  Ian
>>>
>>
>>
>>
>> --
>> Best Regards,
>>
>> Xu, Yuan
>>
>>
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>
>
> --
> http://alejandrosegovia.net
>
>


-- 
Best Regards,

Xu, Yuan