Tuesday, February 24, 2015

Irregular z-buffer revisited

A nice new paper from Wyman, Hoetzlein, and Lefohn out of NVIDIA research digs deeper into the idea of a shadow map sampled in screen space.  The paper and video are online.   This basic idea has been kicking around for over a decade and most people thought it was very promising.  This paper seems to have finally really made the idea live up to its promise (watch the video!). 

I think this will be a big paper: my biggest surprise talking to video game programmers has been how much effort they put into shadows and yet that is still the source of their most annoying dynamic artifacts.   I look forward to seeing good shadows in games!

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