Microfacet distribution function for physically based bidirectional reflectance distribution functions

摘要

A microfacet distribution function is presented. This function can be used to calculate the microfacet distribution term in BRDF models. The function differs from other well-known microfacet distribution functions like Blinn or Beckmann distributions in that it doesn't use special functions like acos, tan, exp, pow and thus has lower computational complexity.