Shader "Hidden/LightweightPipeline/CopyDepth"
{
    SubShader
    {
        Tags { "RenderType" = "Opaque" "RenderPipeline" = "LightiweightPipeline"}

        Pass
        {
            ColorMask 0
            ZTest Always
            ZWrite On

            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag

            sampler2D_float _CameraDepthTexture;

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

            struct VertexOutput
            {
                float4 position : SV_POSITION;
                float2 uv       : TEXCOORD0;
            };

            VertexOutput vert(VertexInput i)
            {
                VertexOutput o;
                o.uv = i.uv;
                o.position = UnityObjectToClipPos(i.vertex);
                return o;
            }

            float frag(VertexOutput i) : SV_Depth
            {
                return tex2D(_CameraDepthTexture, i.uv).r;
            }
            ENDCG
        }
    }
}