I began writing my own deferred renderer in XNA about two years ago. There were a few excellent resources on ZiggyWare, Catalin Zima's site and Riemer Grootjan's site regarding deferred rendering. They helped me quickly get a working renderer written but I still didn't understand much of the maths and concepts behind it.. I just thought it looked cool.

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I've spent the last few days reworking some of the core shaders in my XNA games and in particular working on the shaders that render the cars in our racing game Shadow Racers.

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