// ***********************************************************************
// Author           : Kimch
// Created          : 2018-7-1
// Description      : 角色Shader
// Last Modified By : Kimch
// Last Modified On : 2019-7-1
// ***********************************************************************
// <copyright file= "MY_PBS_Weapon" company="kk"></copyright>
// ***********************************************************************
Shader "MY/PBS/Weapon"
{
	Properties
	{
		_Color("Color", Color) = (1,1,1,1)
		_MainTex("Albedo (RGB)", 2D) = "white" {}
		_Control("R(metallic)G(Smooth)B(liuguang)", 2D) = "white" { }

		_Glossiness("Smoothness", Range(0,1)) = 0.5
		_Metallic("Metallic", Range(0,1)) = 0.0

	}
		SubShader
		{
			Tags { "RenderType" = "Opaque" }
			LOD 200
			CGINCLUDE
			ENDCG

			CGPROGRAM
			// Physically based Standard lighting model, and enable shadows on all light types
			#pragma surface surf Standard noforwardadd nometa nolightmap nofog nolppv noinstancing exclude_path:deferred exclude_path:prepass

			// Use shader model 3.0 target, to get nicer looking lighting
			#pragma target 3.0

			sampler2D _MainTex;
			sampler2D _Control;

			struct Input
			{
				float2 uv_MainTex;
			};

			//struct SurfaceOutputStandard
			//{
			//	fixed3 Albedo;      // base (diffuse or specular) color
			//	float3 Normal;      // tangent space normal, if written
			//	half3 Emission;
			//	half Metallic;      // 0=non-metal, 1=metal
			//	// Smoothness is the user facing name, it should be perceptual smoothness but user should not have to deal with it.
			//	// Everywhere in the code you meet smoothness it is perceptual smoothness
			//	half Smoothness;    // 0=rough, 1=smooth
			//	half Occlusion;     // occlusion (default 1)
			//	fixed Alpha;        // alpha for transparencies
			//};

			half _Glossiness;
			half _Metallic;
			fixed4 _Color;

			void surf(Input IN, inout SurfaceOutputStandard o)
			{
				// Albedo comes from a texture tinted by color
				fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
				o.Albedo = c.rgb;

				fixed4 control = tex2D(_Control, IN.uv_MainTex);

				// Metallic and smoothness come from slider variables
				o.Metallic = _Metallic * control.r;
				o.Smoothness = _Glossiness;// *control.g;
				o.Alpha = c.a;
			}
			ENDCG
		}
			FallBack "Diffuse"
}