Unity 2018 Shaders and Effects Cookbook - Third Edition

How to do it...

For this recipe, we will write a mobile-friendly shader from scratch and discuss the elements that make it more mobile friendly:

1. Let's first populate our Properties block with the textures required. In this case, we are going to use a single _Diffuse texture with the gloss map in its alpha channel, Normal map, and a slider for specular intensity:

Properties {  _Diffuse ("Base (RGB) Specular Amount (A)", 2D) = "white" {}  _SpecIntensity ("Specular Width", Range(0.01, 1)) = 0.5  _NormalMap ("Normal Map", 2D) = "bump"{}}

2. Our next task is to set up our #pragma declarations. This will simply turn certain features of the Surface Shader on and off, ultimately making the shader cheaper or more expensive:

CGPROGRAM#pragma surface ...