Unity 2018 Shaders and Effects Cookbook

Understanding the metallic setup

Unity provides three different types of PBR shaders; they are referred to in the drop-down menu of the material's Inspector tab as Standard, Standard (Roughness Setup), and Standard (Specular setup). The main difference is that Standard and Standard (Roughness Setup) expose the Metallic property, but Standard contains a Smoothness property while the second replaces Smoothness with Roughness. Standard (Specular setup) contains Smoothness, but replaces the Metallic property with Specular. Smoothness and Roughness are opposites of each other, so a 1 Smoothness means 0 Roughness and vice versa. You can generally get the same result no matter which shader you use, so it mostly comes down to personal preference. ...