Unity 2018 Shaders and Effects Cookbook

How to do it...

Open up the SimpleDiffuse shader you've created and make the following changes:

1. In the Properties section, remove all of the variables except for _Color:

  Properties   {    _Color ("Color", Color) = (1,1,1,1)  }

2. From the SubShader{} section, remove the _MainTex, _Glossiness, and _Metallic variables. You should not remove the reference to uv_MainTex as Cg does not allow the Input struct to be empty. The value will simply be ignored.
3. Also, remove the UNITY_INSTANCING_BUFFER_START/END macros and the comments used with them.

4. Remove the content of the surf() function and replace it with the following:

void surf (Input IN, inout SurfaceOutputStandard o) {  o.Albedo = _Color.rgb; }

5. Your shader should look as follows:

Shader "CookbookShaders/Chapter03/SimpleDiffuse" ...