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Re: dual screen OpenGL

by "jbwest" <jbwest@[EMAIL PROTECTED] > Jun 8, 2008 at 09:40 AM

"Serve Lau" <nihao@[EMAIL PROTECTED]
> wrote in message 
news:65fd9$484b8843$541fc2ec$22861@[EMAIL PROTECTED]
>
> "Serve Lau" <nihao@[EMAIL PROTECTED]
> schreef in bericht 
> news:d0f3a$484b876b$541fc2ec$21379@[EMAIL PROTECTED]
>>
>> "jbwest" <jbwest@[EMAIL PROTECTED]
> schreef in bericht 
>> news:856dnX8n5OXaFNXVnZ2dnUVZ_hninZ2d@[EMAIL PROTECTED]
>>> Well, I suggest you dig deeper. The builders may not realize that 
>>> Xinerama and OpenGL often don't get along well, or at all. What this 
>>> means then, is, either No acclerated OpenGL (ugh, useless) with
Xinerama 
>>> on or, any plain old X window on screen 0 CANNOT be moved to screen 1 
>>> with Xinerama off (very, well, old-fa****oned & primitive). Many apps 
>>> don't understand multiple screens & visuals. An app running on screen
0 
>>> can't just simply create another window on screen 1 -- you have to be 
>>> careful to match XVisual's & use a different root & etc. PITA, trust
me.
>>
>> Sounds kinky. At this point in time I can't confirm that as I dont have

>> the hardware to play around with.
>> But do we have to use Xinerama on linux? We could create our own system

>> right?
>
> nevermind I looked it up
>
> http://en.wikipedia.org/wiki/Xinerama
>
> This is not what I need. The 2 graphic cards will not be making one
large 
> display they will be working independently or well, sometimes an
animation 
> starting on one screen can sometimes continue on the other but then they

> are still indpendant
>
>>
>>>
>>> -jbw
>>>
>>>
>>
>


That's my point. you cannot move an opengl context from one framebuffer to

another, you'll have to completely create a new context,  new everything
to 
"continue an animation". You'd better find out. Assuming what you are 
writing now will work on a 2-card system is probably wrong. Multiple X11 
visuals is not simple.

jbw
 




 11 Posts in Topic:
dual screen OpenGL
"Serve Lau" <  2008-06-04 13:11:38 
Re: dual screen OpenGL
Wolfgang Draxinger <wd  2008-06-04 13:15:31 
Re: dual screen OpenGL
"Serve Lau" <  2008-06-04 14:36:51 
Re: dual screen OpenGL
Wolfgang Draxinger <wd  2008-06-04 16:11:16 
Re: dual screen OpenGL
"jbwest" <jb  2008-06-04 17:43:27 
Re: dual screen OpenGL
"Serve Lau" <  2008-06-05 08:51:22 
Re: dual screen OpenGL
"jbwest" <jb  2008-06-05 17:50:31 
Re: dual screen OpenGL
"Serve Lau" <  2008-06-08 09:16:55 
Re: dual screen OpenGL
"Serve Lau" <  2008-06-08 09:20:30 
Re: dual screen OpenGL
"jbwest" <jb  2008-06-08 09:40:06 
Re: dual screen OpenGL
fungus <openglMYSOCKS@  2008-06-08 06:37:58 

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