Shader "Hidden/GetDepth"
{
    Properties
    {
    }
    SubShader
    {
        Tags { "RenderType"="Opaque" }
        LOD 100

        Cull Off
        ZWrite On
        ZTest LEqual

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag

            #include "UnityCG.cginc"

            struct appdata
            {
                float4 vertex : POSITION;
            };

            struct v2f
            {
                float4 vertex : SV_POSITION;
            };

            v2f vert (appdata v)
            {
                v2f o;
                o.vertex = UnityObjectToClipPos(v.vertex);
                return o;
            }

            float4 frag(v2f i) : SV_Target
            {

                return float4((i.vertex.z/i.vertex.w), 0, 0,1);

            }
            ENDCG
        }
    }
}