Metallic(메탈릭) Smoothness(스무스니스)

Shader "Custom/SurfaceShader" {
	Properties {
		_MainTex ("Albedo (RGB)", 2D) = "white" {}
		_Metallic("Metallic", Range(0, 1)) = 0
		_Smoothness("Smoothness", Range(0, 1)) = 0
	}
	SubShader {
		Tags { "RenderType"="Opaque" }		
		CGPROGRAM
		#pragma surface surf Standard

		sampler2D _MainTex;
		float _Metallic;
		float _Smoothness;

		struct Input {
			float2 uv_MainTex;
		};


		UNITY_INSTANCING_BUFFER_START(Props)
		UNITY_INSTANCING_BUFFER_END(Props)

		void surf (Input IN, inout SurfaceOutputStandard o) {
			fixed4 c = tex2D (_MainTex, IN.uv_MainTex);
			o.Albedo = c.rgb;
			o.Metallic = _Metallic;
			o.Smoothness = _Smoothness;
			o.Alpha = c.a;
		}
		ENDCG
	}
	FallBack "Diffuse"
}