WhereAmITestShader.shader

Shader "Unlit/WhereAmITestShader"
{
    Properties
    {
        _MainTex ("Texture", 2D) = "white" {}
    }
    SubShader
    {
        Tags { "RenderType"="Opaque" }
        LOD 100

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag

            #include "UnityCG.cginc"

            struct appdata
            {
                float4 vertex : POSITION;
                float2 uv : TEXCOORD0;
            };

            struct v2f
            {
                float2 uv : TEXCOORD0;
                float4 vertex : SV_POSITION;    
                // Add another float4 to the object that carries the data from the verticies to the fragmet shaders. 
                float4 original_vertex : TEXCOORD1; 

            };

            v2f vert (appdata v)
            {
                v2f o;
                o.vertex = UnityObjectToClipPos(v.vertex);
                // Pass the original data through here.
                o.original_vertex = v.vertex;
                return o;
            }

            fixed4 frag (v2f i) : SV_Target
            {
                // Use the original vertex value to determine the fragment color. 
                fixed4 col = i.original_vertex;
                return col;
            }

            ENDCG
        }
    }
}