feat: Initial commit

Assets/Shaders/Masked.shader

@@ -0,0 +1,55 @@
+Shader "Map/Masked" {
+	Properties {
+		_Color ("Color", Color) = (1, 1, 1, 1)
+		_MainTex ("Texture", 2D) = "white" { }
+		[IntRange] _Mask ("Mask", Range(0, 255)) = 0
+	}
+	SubShader {
+		Tags { "RenderType" = "Opaque" }
+		LOD 100
+
+		Blend SrcAlpha OneMinusSrcAlpha
+
+		Pass {
+			Stencil {
+				Ref 0
+				ReadMask [_Mask]
+				Comp Equal
+			}
+
+			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) * _Color;
+				clip(col.a - 0.5);
+				return col;
+			}
+			ENDCG
+		}
+	}
+}