[gl2ps] additional 3D export formats?

[Andreas Micheler]

Hi Christophe,
> Are the texture coordinates passed through the OpenGL feedback buffer?
>
> When I looked at this a few years ago I thought they were not... But if
> they are, I would encourage you to change GL2PS to keep track of them:
> it's a much requested feature.
>
> Let us know what you find out...
>   
Ok, I have the texture coordinates now in my .obj output from gl2ps!
So I have rendered a landscape fractal generated in aUCBLogo by 
POVRay!!! :-D
It works for ONE texture, but I don't know how to get to know the 
textures changes.
So I can NOT export complex scenes consisting out of several objects,
each textured with another texture maybe.

This is my next question:
How can I find out the change in texture?
It would be sufficient to get a texture number, but how to find it out?

Cheers,
Andreas