I'm looking for a comprehensive and up-to-date reference (preferably in book form) on OpenGL. I'd like to find something that covers OpenGL 3.0 but also need information on OpenGL 2.1 for older hardware (my understanding is that DirectX 10 level hardware is necessary for OpenGL 3 functionality).
I'm strongly considering the OpenGL SuperBible but it appears that this only covers up to OpenGL 2.1.
Any suggestions?
I don't know of a single, good book that covers 3.0 (or 3.2) which has been published yet.
I would recommend the OpenGL SuperBible (even though it's only 2.1, it's quite good), and then just refer to the OpenGL Reference Pages for 3.x.
Well, if you want a reference, then http://www.amazon.ca/OpenGL-Programming-Guide-Official-Learning/dp/0321552628/ref=pd%5Fsim%5Fb%5F3/177-2117560-4949667 (AKA "The Red Book") will get you covered. Looks like this edition covers OpenGL 3.0 and 3.1
I suggest the latest official specification document from Khronos. You can't get more authoritative than that! You can even create a nice spiral-bound "book" out of it at Kinko's. With great pride, I make a new hard copy every few years, and it works well for me.