Physically Based Shading, Metallic and Specular workflows
Physically based shading is more and more adopted and even if the core mechanism is pretty much always the same, the workflow may differ from an engine to another. For example let’s compare two common ones, often called Metallic and Specular. The metallic workflow uses a color input, the base color, and two scalar parameters, rouhghness and metallic. On a specular workflow there is two color inputs, an albedo and a specular, and a scalar, the roughness. ...