AppExperiments

Shader "Portal/UnlitMasked" {
	Properties {
		_PortalMask("Portal Mask", Float) = 0
		_Color ("Color", Color) = (1,1,1,1)
		_MainTex ("Texture", 2D) = "white" {}
	}
	SubShader {
		Tags { "RenderType"="Opaque" }
		LOD 100

		Stencil{
			Ref[_PortalMask]
			ReadMask 3
			Comp equal
		}

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

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

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

			sampler2D _MainTex;
			float4 _MainTex_ST;
			fixed4 _Color;
			
			v2f vert (appdata v) {
				v2f o;
				o.vertex = UnityObjectToClipPos(v.vertex);
				o.uv = TRANSFORM_TEX(v.uv, _MainTex);
				return o;
			}
			
			fixed4 frag (v2f i) : SV_Target {
				fixed4 col = tex2D(_MainTex, i.uv);
				return _Color * col;
			}
			ENDCG
		}
	}
}