CopyDepth2Color.shader

Shader "Hidden/CopyDepth2Color" {
	Properties {
		_MainTex ("Texture", 2D) = "white" {}
	}
	SubShader {
		Cull Off ZWrite On ZTest Always

		Pass {
			CGPROGRAM
			#pragma vertex vert
			#pragma fragment CopyDepthBufferFragmentShader
			
			#include "UnityCG.cginc"

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

			struct v2f {
				float2 uv : TEXCOORD0;
				float4 vertex : SV_POSITION;
			};

			v2f vert (appdata v) {
				v2f o;
				o.vertex = UnityObjectToClipPos(v.vertex);
				o.uv = v.uv;
				return o;
			}
			
			sampler2D_float _MainTex;

			float CopyDepthBufferFragmentShader(v2f i) : COLOR {
                float depth = SAMPLE_DEPTH_TEXTURE(_MainTex, i.uv);
                depth = Linear01Depth(depth);
                return depth;
			}

			ENDCG
		}
	}
}