gluPerspective Question

[cass]

Originally posted by Devulon:
Come on Cass you know that gluPerspective is completely valid for any matrix mode. Imagine the scene geometry (or texture coords for that matter) taking on perspective !!! Ahhh my head hurts trying to picture that. ( :

Devulon

Certainly gluPerspective is completely valid for any matrix stack. It's used regularly in the texture matrix for projective texture mapping, for example.

What I wanted to make clear is that it's fine (and almost certainly most common) to have gluPerspective in the PROJECTION matrix.

Thanks -
Cass

[Stack Overflow]

Devulon, you may want to check out the Red Book to refer to the examples. Most of them seem to use glOrtho or gluPerspective in the PROJECTION Matrix Mode. Red Book

Chapter 3: Viewing

- VC6-OGL