gluUnproject is too slow for getting the frustum.
I'm currently using the frustum plane extraction code by Mark Morley.
But this only gives me 6 planes.
But I also need the 8 verts for my project
I heard that there is an opengl extension for extracting the frustum?
Maybe that one could help me ?
Anyway, if you could direct me to a 3x plane intersection code example, that would get me on my way