Award-winning authorClayton Walnum has been writing about computers for two decades. In the 80's, Clay published many computer games in Atari computer magazines and eventually became the Executive Editor of two monthly Atari magazines, ANALOG Computing and ST-Log. Over the course of his career, he has written many books on graphics and game programming, covering such technologies as Visual Basic, C++, OpenGL, and DirectX. Some of these books include Sams Teach Yourself Game Programming with Visual Basic 6 in 21 Days, Dungeons of Discovery: Writing Dazzling Windows Games with WinG, 3-D Graphics Programming with OpenGL, and Creating Turbo C++ Games. Clay holds a degree in Computer Science.