Physically Based Rendering by Acerola A demonstration of multiple popular brdfs in the graphics industry and an implementation of Disney's Principled BRDF. Lambertian Diffuse Blinn-Phong Disney's Principled BRDF Disney's Principled BRDF w/ indirect lighting sample References https://media.disneyanimation.com/uploads/production/publication_asset/48/asset/s2012_pbs_disney_brdf_notes_v3.pdf https://boksajak.github.io/files/CrashCourseBRDF.pdf https://github.com/wdas/brdf/blob/main/src/brdfs/disney.brdf