Custom Unity Shaders

Glass.shader

Shader "PACKT/Glass" {

  // Custom glass shader by Dana Muise
  // Mutli pass functions provide transparent effects on both sides of geometry.
  
	Properties {
		_Color ("Color", Color) = (1,1,1,1)
		_MainTex ("Albedo (RGB)", 2D) = "white" {}
		_Glossiness ("Smoothness", Range(0,1)) = 0.5
		_Metallic ("Metallic", Range(0,1)) = 0.0
		_Thickness ("Thicknes", Range(-1, 1)) = 0.5
	}
	SubShader {
		Tags { "RenderType"="Transparent" }
		LOD 200
		Cull Back
		
		CGPROGRAM
		// Physically based Standard lighting model, and enable shadows on all light types
		#pragma surface surf Standard fullforwardshadows alpha

		// Use shader model 3.0 target, to get nicer looking lighting
		#pragma target 3.0

		sampler2D _MainTex;

		struct Input {
			float2 uv_MainTex;
		};

		half _Glossiness;
		half _Metallic;
		fixed4 _Color;

		void surf (Input IN, inout SurfaceOutputStandard o) {
			// Albedo comes from a texture tinted by color
			fixed4 c = tex2D (_MainTex, IN.uv_MainTex) * _Color;
			o.Albedo = c.rgb;
			// Metallic and smoothness come from slider variables
			o.Metallic = _Metallic;
			o.Smoothness = _Glossiness;
			o.Alpha = c.a;
		}
		ENDCG

		Cull Front
		CGPROGRAM
		#pragma surface surf Standard fullforwardshadows alpha vertext: vert

		struct Input {
			float2 uv_MainTex;
		};

		float _Thickness;

		//move the coordinates of the verts out by distance "Thickness"
		void vert (inout appdata_full v) {
			v.vertex.xyz += v.normal * _Thickness;
		}
		//the rest is the same as the previous Cg, just inset to appear as if inside the mesh has it's own shader
		sampler2D _MainTex;
		half _Glossiness;
		half _Metallic;
		fixed4 _Color;

		void surf (Input IN, inout SurfaceOutputStandard o) {
			fixed4 c = tex2D (_MainTex, IN.uv_MainTex) * _Color;
			o.Albedo = c.rgb;
			o.Metallic = _Metallic;
			o.Smoothness = _Glossiness;
			o.Alpha = c.a;
		}
		ENDCG
	}
	FallBack "Diffuse"
}