Conversion between specular exponent, specular roughness, and specular glossiness

[mathjax] Ever need to convert between specular exponent, roughness, and glossiness? for the Blinn-Phong BRDF, these three values represent the same concept. Specular Exponent is the actual value used to compute the BRDF. Let’s call that variable . The roughness and glossiness values are numbers between 0 and 1 and they are additive inverses of […]