feat: Initial commit

Assets/Shaders/Mask.shader

@@ -0,0 +1,24 @@
+Shader "Map/Mask"
+{
+	Properties {
+		[IntRange] _Mask ("Mask", Range(0, 255)) = 0
+	}
+	SubShader {
+		Tags {
+			"RenderType" = "Opaque"
+			"Queue" = "Geometry-1"
+		}
+
+		Pass {
+			Blend Zero One
+			ZWrite Off
+
+			Stencil {
+				Ref 255
+				WriteMask [_Mask]
+				Comp Always
+				Pass Replace
+			}
+		}
+	}
+}