ACM TRANSACTIONS ON GRAPHICS 29（4）,2010
Hair is a vital element for the virtual characters in computer animations and games. Due to the complexity of hair geometry, rendering of hair has been a long stand difficult problem in computer graphics. We propose a novel interactive technique to render hair under environmental lighting, which decomposes the lighting and shading computation and accelerates complex integration via pre-computation. Experiments show our technique is able to generate, at interactive frame rates, high quality results comparable to those produced by existing offline method.
