Michael Abrash's Graphics Black Book is online
Michael Abrash's Graphics Programming Black Book (also here [PDF]) is now freely available in PDF form thanks to Dr. Dobb's Journal. This book has a wealth of knowledge about graphics programming, covering both past and present hardware architectures. It may be a little out of date with today's approaches, but a lot of the principles taught will never change. Not for the faint of heart though....
Updated link to byte.com, added alternative, free link hosted by stanford.edu
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