AROcclusionShader.shader

// Virtual occlusion, hide objects behind, without being visible to the user 

// Useful with AR Utils: https://github.com/jonas-johansson/ARCoreUtils

// Shader src: https://forum.unity.com/threads/clipping-objects-behind-a-higher-plane.492147/#post-3205094

Shader "Custom/ARStencilOcclusion" {
    SubShader {
        Tags { "Queue" = "Background-1" }
        Pass {
            ColorMask 0
       
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
 
            #include "UnityCG.cginc"
 
            struct appdata
            {
               float4 vertex : POSITION;
            };
     
            struct v2f
            {
               float4 vertex : SV_POSITION;
               float size : PSIZE;
            };
         
            v2f vert (appdata v)
            {
                v2f o;
                o.vertex = UnityObjectToClipPos(v.vertex);
                o.size = 30;
                return o;
            }
         
            fixed4 frag (v2f i) : SV_Target
            {
                return fixed4(1, 1, 1, 1);
            }
            ENDCG
        }
    }
}