Normal Map Information

This paper on real-time normal map compression, written by J.M.P. van Waveren and Ignacio Castaño, is a great read for everybody who wants to deepen their fundamental understanding of normal maps. The paper fully explains a whole bunch of issues with normal maps that I only touched on in my 2007 GDC talk, and contains a lot of details that I didn’t know about yet. Highly recommended reading for all technical artists and grpahics programmers.