Lecture 13: Global Illumination & Path Tracing (25)
wcyjames
As is mentioned in the last lecture, BRDF Importance Sampling is supposed to perform better than uniform sampling that will generate high-variance results with a specular BRDF like Phong. I wonder how is this function defined analytically?
As is mentioned in the last lecture, BRDF Importance Sampling is supposed to perform better than uniform sampling that will generate high-variance results with a specular BRDF like Phong. I wonder how is this function defined analytically?