Shader "Custom/OpaqueShader" {
	Properties {
		dColor ("Diffuse Color", Color) = (1.0, 1.0, 1.0, 1.0)
		sColor ("Specular Color", Color) = (1.0, 1.0, 1.0, 1.0)
		sPow ("Specular Power", Float) = 50.0
		fPow ("Fresnel Power", Float) = 10
		sStre ("Specular Strength", Float) = 20.0
		fStre ("Fresnel Strength", Float) = 10
		_MainTex ("Diffuse Texture", 2D) = "white" {}
	}
	SubShader {
		Pass {
			Tags { "LightMode" = "ForwardBase" "RenderType" = "Opaque" }
			Cull Back
			CGPROGRAM
			#pragma vertex vert
			#pragma fragment frag
			#pragma target 3.0
			#pragma glsl
			#pragma multi_compile_fwdbase
    		#include "UnityCG.cginc"
			#include "AutoLight.cginc"

			sampler2D _MainTex;

			float sPow;
			float sStre;
			float fPow;
			float fStre;

			float4 dColor;
			float4 sColor;
			float4 _LightColor0;

			struct vOut {
				float4 pos : SV_POSITION;
				float2 uv : TEXCOORD0;
				float4 pW : TEXCOORD1;
				float3 nW : TEXCOORD2;
				//float3 tW : TEXCOORD3;
				//float3 bI : TEXCOORD4;
				LIGHTING_COORDS(3,4)
			};

			vOut vert(appdata_base v){
				vOut o;

				o.nW = normalize( mul( float4(v.normal, 0.0), _World2Object).xyz);
				//o.tW = normalize( mul(_Object2World, v.tangent).xyz );
				//o.bI = normalize( cross(o.nW, o.tW) * v.tangent.w);

				o.pW = mul(_Object2World, v.vertex);
				o.pos = mul(UNITY_MATRIX_MVP, v.vertex);
				o.uv = v.texcoord.xy;

				TRANSFER_VERTEX_TO_FRAGMENT(o);

				return o;
			}

			float4 frag(vOut i) : COLOR {
				float3 l = normalize( _WorldSpaceLightPos0.xyz );
				float3 n = normalize( i.nW );
				float3 v = normalize( _WorldSpaceCameraPos.xyz - i.pW.xyz );
				float3 h = normalize(v + l);
				float at = LIGHT_ATTENUATION(i);

				float3 ndotL = _LightColor0.rgb * saturate( dot(n, l)) * dColor.rgb;
				float3 spec = (saturate( pow(dot(n, v), sPow)) * sColor.rgb) * sStre;
				float3 fres = saturate(1.0f - pow(dot(v, n), fPow)) * fStre;

				spec *= ndotL;
				fres *= ndotL;
				ndotL *= at;
				spec *= at;
				fres *= at;

				return float4(ndotL + spec + fres, 1.0);
			}

			ENDCG
		}
	}
	Fallback "Diffuse"
}