mixing functions from different graphics cards? G965 + ivtv

Tiago Vignatti vignatti at c3sl.ufpr.br
Thu Mar 22 07:47:40 PDT 2007

Csillag Kristof escreveu:
> Hi!
> I have a weird idea, and I am not familiar enough with graphics hardware 
> to decide
> whether it's possible or not. So, the question is the following:
> is it possible to use one graphics chip-set to generate image
> (ie. to render OpenGl, etc), and an other chip-set to output
> the image to a physical device?
> To be more specific, if I add a pvr-350 to my box, then I will have
>   - the integrated 965G, which has abilities, but no working tv-out, and
>   - the ivtv chip on the PVR card, which has a nice tv out, but no 
> acceleration.
> I know that new cards can do all kinds of off-screen rendering, so it 
> might not
> be impossible to use one chip-set to render the stuff, and then transfer 
> the image
> to the frame-buffer of the other card.
> Is this physically possible?
> If yes, how can this be done? Do I have to write a special driver
> to "combine" the two devices, or can this be done from user-space?

Something like VirtualGL [1,2]?

[1] http://en.wikipedia.org/wiki/VirtualGL
[2] http://www.virtualgl.org/

>    Kristof Csillag

Tiago Vignatti
C3SL - Centro de Computação Científica e Software Livre

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