Unity Normal Shader Template

NormalShader.shader

Shader "MatthewShaders/NormalShader"
{
    Properties
    {
        //Setting the default color to be green:
        _MainTint ("Diffuse Tint", Color) = (0,1,0,1)

        //"bump map" is a synonym for normal map- we are telling Unity that this will contain normal data:
        _NormalTex ("Normal Map", 2D) = "bump" {}

        //Intensity of the normal map:
        _NormalMapIntensity ("Normal Intensity", Range(0,3)) = 1
    }
    SubShader
    {
        Tags { "RenderType"="Opaque" }
        LOD 200

        CGPROGRAM
        // Physically based Standard lighting model, and enable shadows on all light types
        #pragma surface surf Standard fullforwardshadows

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

        sampler2D _NormalTex;
        float4 _MainTint;

        struct Input
        {
            float2 uv_NormalTex;
        };

        float _NormalMapIntensity;
        fixed4 _Color;

        // Add instancing support for this shader. You need to check 'Enable Instancing' on materials that use the shader.
        // See https://docs.unity3d.com/Manual/GPUInstancing.html for more information about instancing.
        // #pragma instancing_options assumeuniformscaling
        UNITY_INSTANCING_BUFFER_START(Props)
            // put more per-instance properties here
        UNITY_INSTANCING_BUFFER_END(Props)

        void surf (Input IN, inout SurfaceOutputStandard o)
        {
            //Use the tint provided as the base color for the material:
            o.Albedo = _MainTint;

            //Get the normal data out of the normal map texture using:
            float3 normalMap = UnpackNormal(
                tex2D(
                    _NormalTex,
                    IN.uv_NormalTex
                )
            );

            //Apply intensity:
            normalMap.x *= _NormalMapIntensity;
            normalMap.y *= _NormalMapIntensity;

            //Apply the new normal to the lighting model
            o.Normal = 
                normalize(
                    normalMap.rgb
                );

        }
        ENDCG
    }
    FallBack "Diffuse"
}