I posted this in the beginners section, but maybe I'll get more response here.
I've been trying to get this answer for a while now .
I want to render a 3D scene, save it (on the card's memory somewhere), and then recall it. In between I may want to render a different scene, and later recall that one too. I also want to manage the whole thing: I want to know how much more resources I have, so I don't overwrite previous scenes.
I thought about using textures, i.e. render a scene and then copy it to a texture (glCopyTexImage), thus managing an array of textures. This is not great, because my scenes are 3D (I need the depth component as well).
This is very frustrating, because this task seems very useful (in games for example), if you have a complex scene, and you want to do the complex rendering only once, but displaying many times.
And by the way, aux buffers and pbuffers didn't look very attractive to me either.
Thanks for any help.