This document describes my implementation of the fakefur method as a Renderman shader. The fakefur method is a probabilistic lighting model for thin coats of fur over skin. It was originally developed by Dan B Goldman at Industrial Light and Magic and has been used in films such as 101 Dalmatians and Mars Attacks. The method approximates visual characteristics of fur, such as glossy sheen and soft illumination, at image resolutions where individual hairs are not visible. A bidirectional reflectance distribution function, BRDF, subsurface shading model is used as the lighting model for the underlying skin, which shows through when the fur is thin.

Read the report (pdf): fakefur.pdf