depthshader

depth.shader

Shader "Custom/MyTestShader"
{
    Properties
    {

    }
    SubShader
    {
        // Draw ourselves after all opaque geometry
        Tags { "Queue" = "Overlay" "DisableBatching" = "True" }
        Cull Off

        GrabPass { "_GrabTexture" }
        Pass {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #include "UnityCG.cginc"

            sampler2D _GrabTexture,_CameraDepthTexture;

            struct appdata
            {
                float4 vertex : POSITION;
            };

            struct v2f
            {
                float4 grabPos : TEXCOORD0;
                float4 vertex : SV_POSITION;
                bool isCam : TEXCOORD1;
            };
            
            
            v2f vert (appdata v)
            {
                v2f o;
                o.vertex = UnityObjectToClipPos(v.vertex);
                o.grabPos = ComputeGrabScreenPos(o.vertex);
                return o;
            }
            
            fixed4 frag (v2f i) : SV_Target
            {
                //return tex2Dproj(_GrabTexture,i.grabPos);
                fixed4 transparent = tex2Dproj(_GrabTexture,i.grabPos);
                //fixed4 depth = SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, i.uv);
                half depth = LinearEyeDepth(tex2Dproj(_CameraDepthTexture,i.grabPos))/10;
                fixed4 color = depth;
                return color;
            }
            

            ENDCG
        }
    }
}