Shader "MY/PBR/PlayerV2"
{
	Properties
	{
		_Color("Color", Color) = (1,1,1,1)
		_MainTex("Albedo (RGB)", 2D) = "white" {}
		_Glossiness("Smoothness", Range(0,1)) = 0.5

		_SpecTex("Specular (R 高光 G 自发光 B Detail)", 2D) = "black" {}
		_SpecColor("高光颜色", Color) = (0,0,0,1)
		_SpecPower("高光强度", Range(0,2)) = 1
		_RimColor("边光颜色", Color) = (0,0,0,1)
		_RimPower("边光强度", Range(0,2)) = 1
		_RimRange("边光范围", Range(1,10)) = 1.8
		_EmissionColor("自发光颜色", Color) = (0,0,0)
		_EmissionPower("自发光强度", Range(0,5)) = 1
		[HDR]_DetailColor("细节颜色", Color) = (0,0,0)
	}

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

			CGPROGRAM
			// Physically based Standard lighting model, and enable shadows on all light types
			#pragma surface surf StandardSpecular fullforwardshadows finalcolor:mycolor exclude_path:deferred exclude_path:prepass nometa nolightmap nofog 

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


			sampler2D _MainTex;

			struct Input
			{
				float2 uv_MainTex;
				float3 viewDir;
				float3 worldNormal;
			};

			half _Glossiness;
			fixed4 _Color;
			sampler2D _SpecTex;
			//fixed3 _SpecColor;
			half _SpecPower;
			fixed3 _RimColor;
			half _RimPower;
			half _RimRange;
			fixed3 _EmissionColor;
			half _EmissionPower;
			fixed3 _DetailColor;
			// Add instancing support for this shader. You need to check 'Enable Instancing' on materials that use the shader.
			// See https://docs.unity3d.com/Manual/GPUInstancing.html for more information about instancing.
			// #pragma instancing_options assumeuniformscaling
			UNITY_INSTANCING_BUFFER_START(Props)
				// put more per-instance properties here
			UNITY_INSTANCING_BUFFER_END(Props)

				//struct SurfaceOutputStandardSpecular
				//{
				//	fixed3 Albedo;      // diffuse color
				//	fixed3 Specular;    // specular color
				//	float3 Normal;      // tangent space normal, if written
				//	half3 Emission;
				//	half Smoothness;    // 0=rough, 1=smooth
				//	half Occlusion;     // occlusion (default 1)
				//	fixed Alpha;        // alpha for transparencies
				//};

				//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
				//};

		/*	half3 LerpWhiteTo(half3 b, half t)
			{
				half oneMinusT = 1 - t;
				return half3(oneMinusT, oneMinusT, oneMinusT) + b * t;
			}*/
			//void vert(inout appdata_full v, out Input o)
			//{
			//	UNITY_INITIALIZE_OUTPUT(Input, o);
			//}

			void surf(Input IN, inout SurfaceOutputStandardSpecular o)
			{
				// Albedo comes from a texture tinted by color
				fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
				fixed4 specGloss = tex2D(_SpecTex, IN.uv_MainTex);
				fixed3 detailAlbedo = _DetailColor;//tex2D(_DetailAlbedoMap, IN.uv_MainTex);

				o.Albedo = c.rgb;
				half mask = specGloss.b;
				//#if _DETAIL_MULX2
				//				o.Albedo *= LerpWhiteTo(detailAlbedo * unity_ColorSpaceDouble.rgb, mask);
				//#elif _DETAIL_MUL
								//o.Albedo *= LerpWhiteTo(detailAlbedo, mask);
				//#elif _DETAIL_ADD
								o.Albedo += detailAlbedo * mask;
								//#elif _DETAIL_LERP
								//				o.Albedo = lerp(albedo, detailAlbedo, mask);
								//#endif
												//o.Albedo = c.rgb;
												// Specular and smoothness come from slider variables
												o.Specular = _SpecColor * specGloss.r * _SpecPower;
												o.Smoothness = _Glossiness;
												//o.Emission = specGloss.g * _EmissionPower * _EmissionColor;
												o.Alpha = 1;//c.a;
											}

											void mycolor(Input IN, SurfaceOutputStandardSpecular o, inout fixed4 color)
											{
												fixed3 rim = _RimColor * _RimPower * saturate(1 - saturate(dot(IN.worldNormal, IN.viewDir)) * _RimRange);
												color.rgb += rim;
											}

											ENDCG
		}
			FallBack "Diffuse"
}