Microfacet distribution function for physically based bidirectional reflectance distribution functions
Олександр Романюк, Sergii Pavlov, Rostyslav Y. Dovhaliuk, N. Babyuk, M. D. Obidnyk, Piotr Kisała, Batyrbek Suleimenov · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2013
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.