Crazy Image Question

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From: Larry E. Ramey (ramey++at++vrco.com)
Date: 01/04/2001 09:41:22

I suspect this is impossible as I want to do it, but I'll give it a
swing anyway.

Imagine two windows. 4 viewports. (OK, It's a CAVE)

I know how to take a dump from the walls of the cave (since they are
simply the framebuffer)

What if I want a rgb file that is NOT co-planer with the FrameBuffer?

Call the FrameBuffer normal := fn
My Plane := mp

if (fn == mp){

    imageout = glReadPixels(); // it is a LITTLE more complicated than
this, but not much.
}
else{
    ?
    ?
    ?
}

Is there some way to use the texture matrix to fool the computer into
thinking that mp=fn? I mean apply a reverse projection of something, so
the plane that I wish to make an image of, is magically lined up with
the framebuffer? 

--
"At the sickbed of Cuchulainn, we'll kneel and say a prayer" -Pogues
Larry E. Ramey
ramey++at++vrco.com

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