Unity Depth Clear Shader

Shader "Mask/DepthClear"
{
    SubShader
    {
        Tags { "RenderType" = "Opaque" "PerformanceChecks" = "False" "Queue" = "Geometry" }

        Offset 0, 2047483640 // Offset back as much as possible
        ZTest Always
        ZWrite On
        ColorMask 0

        Pass
        {
        }
    }

    FallBack Off
}