Unity 2018 Shaders and Effects Cookbook - Third Edition

How it works...

The way shaders allow you to communicate the rendering properties of your material to their lighting model is via their SurfaceOutput. It is basically a wrapper around all the parameters that the current lighting model needs. It should not surprise you that different lighting models have different SurfaceOutput structs. The following table shows the three main output structs used in Unity and how they can be used:

Type of shaders	Standard	Physically-Based Lighting Models
Diffuse	Any Surface Shader SurfaceOutput	Standard SurfaceOutputStandard
Specular	Any Surface Shader SurfaceOutput	Standard (Specular setup) SurfaceOutputStandardSpecular

The SurfaceOutput struct has the following properties: ...