[fluxus] multitexturing and frustum stuff

[Dave Griffiths]

> nice,
>
>> * (frustum top bottom left right) sets screen area, with this you can
>> set the aspect ratio for the render. defaults to -0.75 0.75 -1 1
>
> 2 questions that i figure are a logical extension of this:
> 1) is there any way to find out the size of the fluxus window?
> 2) is there a callback that one could register for window resize events?

not currently possible I'm afraid, you'll need to set it by hand.
it would be easier for me to add a mode that would retain the aspect ratio
for you when the window is resized.

cheers,

dave