Shader "MTE/Standard/8 Textures/Bumped"
{
	Properties
	{
		_Control ("Control (RGBA)", 2D) = "red" {}
		_ControlExtra ("Control Extra (RGB)", 2D) = "black" {}
		_Splat0 ("Layer 1", 2D) = "white" {}
		_Splat1 ("Layer 2", 2D) = "white" {}
		_Splat2 ("Layer 3", 2D) = "white" {}
		_Splat3 ("Layer 4", 2D) = "white" {}
		_Splat4 ("Layer 5", 2D) = "white" {}
		_Splat5 ("Layer 6", 2D) = "white" {}
		_Splat6 ("Layer 7", 2D) = "white" {}
		_Splat7 ("Layer 8", 2D) = "white" {}

		_Normal0("Normal 1", 2D) = "bump" {}
		_Normal1("Normal 2", 2D) = "bump" {}
		_Normal2("Normal 3", 2D) = "bump" {}
		_Normal3("Normal 4", 2D) = "bump" {}

		[Gamma] _Metallic0("Metallic 1", Range(0.0, 1.0)) = 0.0
		[Gamma] _Metallic1("Metallic 2", Range(0.0, 1.0)) = 0.0
		[Gamma] _Metallic2("Metallic 3", Range(0.0, 1.0)) = 0.0
		[Gamma] _Metallic3("Metallic 4", Range(0.0, 1.0)) = 0.0
		[Gamma] _Metallic4("Metallic 5", Range(0.0, 1.0)) = 0.0
		[Gamma] _Metallic5("Metallic 6", Range(0.0, 1.0)) = 0.0
		[Gamma] _Metallic6("Metallic 7", Range(0.0, 1.0)) = 0.0
		[Gamma] _Metallic7("Metallic 8", Range(0.0, 1.0)) = 0.0
		_Smoothness0("Smoothness 1", Range(0.0, 1.0)) = 1.0
		_Smoothness1("Smoothness 2", Range(0.0, 1.0)) = 1.0
		_Smoothness2("Smoothness 3", Range(0.0, 1.0)) = 1.0
		_Smoothness3("Smoothness 4", Range(0.0, 1.0)) = 1.0
		_Smoothness4("Smoothness 5", Range(0.0, 1.0)) = 1.0
		_Smoothness5("Smoothness 6", Range(0.0, 1.0)) = 1.0
		_Smoothness6("Smoothness 7", Range(0.0, 1.0)) = 1.0
		_Smoothness7("Smoothness 8", Range(0.0, 1.0)) = 1.0
	}

	CGINCLUDE
		#pragma surface surf Standard vertex:MTE_SplatmapVert finalcolor:MTE_SplatmapFinalColor finalprepass:MTE_SplatmapFinalPrepass finalgbuffer:MTE_SplatmapFinalGBuffer
		#pragma multi_compile_fog

		struct Input
		{
			float4 tc;
			UNITY_FOG_COORDS(0)
		};

		sampler2D _Control,_ControlExtra;
		float4 _Control_ST,_ControlExtra_ST;
		sampler2D _Splat0,_Splat1,_Splat2,_Splat3,_Splat4,_Splat5,_Splat6,_Splat7;
		float4 _Splat0_ST,_Splat1_ST,_Splat2_ST,_Splat3_ST,_Splat4_ST,_Splat5_ST,_Splat6_ST,_Splat7_ST;
		sampler2D _Normal0, _Normal1, _Normal2, _Normal3;
		
		#define MTE_STANDARD_SHADER
		#include "UnityPBSLighting.cginc"
		#include "../../MTECommon.hlsl"

		half _Metallic0;
		half _Metallic1;
		half _Metallic2;
		half _Metallic3;
		half _Metallic4;
		half _Metallic5;
		half _Metallic6;
		half _Metallic7;
		half _Smoothness0;
		half _Smoothness1;
		half _Smoothness2;
		half _Smoothness3;
		half _Smoothness4;
		half _Smoothness5;
		half _Smoothness6;
		half _Smoothness7;

		void MTE_SplatmapVert(inout appdata_full v, out Input data)
		{
			UNITY_INITIALIZE_OUTPUT(Input, data);
			data.tc = v.texcoord;
			float4 pos = UnityObjectToClipPos(v.vertex);
			UNITY_TRANSFER_FOG(data, pos);

			v.tangent.xyz = cross(v.normal, float3(0,0,1));
			v.tangent.w = -1;
		}

		void MTE_SplatmapMix(Input IN, half4 smoothness0, half4 smoothness1, out half4 splat_control, out half4 splat_control_extra, out half weight, out fixed4 mixedDiffuse, inout fixed3 mixedNormal)
		{
			float2 uvControl = TRANSFORM_TEX(IN.tc.xy, _Control);
			float2 uvControlExtra = TRANSFORM_TEX(IN.tc.xy, _ControlExtra);
			float2 uvSplat0 = TRANSFORM_TEX(IN.tc.xy, _Splat0);
			float2 uvSplat1 = TRANSFORM_TEX(IN.tc.xy, _Splat1);
			float2 uvSplat2 = TRANSFORM_TEX(IN.tc.xy, _Splat2);
			float2 uvSplat3 = TRANSFORM_TEX(IN.tc.xy, _Splat3);
			float2 uvSplat4 = TRANSFORM_TEX(IN.tc.xy, _Splat4);
			float2 uvSplat5 = TRANSFORM_TEX(IN.tc.xy, _Splat5);
			float2 uvSplat6 = TRANSFORM_TEX(IN.tc.xy, _Splat6);
			float2 uvSplat7 = TRANSFORM_TEX(IN.tc.xy, _Splat7);

			splat_control = tex2D(_Control, uvControl);
			splat_control_extra = tex2D(_ControlExtra, uvControlExtra);
			weight = dot(splat_control, half4(1, 1, 1, 1));
			weight += dot(splat_control_extra, half4(1, 1, 1, 1));
			splat_control /= (weight + 1e-3f);
			splat_control_extra /= (weight + 1e-3f);

			mixedDiffuse = 0;
			mixedDiffuse += splat_control.r       * tex2D(_Splat0, uvSplat0) * half4(1.0, 1.0, 1.0, smoothness0.r);
			mixedDiffuse += splat_control.g       * tex2D(_Splat1, uvSplat1) * half4(1.0, 1.0, 1.0, smoothness0.g);
			mixedDiffuse += splat_control.b       * tex2D(_Splat2, uvSplat2) * half4(1.0, 1.0, 1.0, smoothness0.b);
			mixedDiffuse += splat_control.a       * tex2D(_Splat3, uvSplat3) * half4(1.0, 1.0, 1.0, smoothness0.a);
			mixedDiffuse += splat_control_extra.r * tex2D(_Splat4, uvSplat4) * half4(1.0, 1.0, 1.0, smoothness1.r);
			mixedDiffuse += splat_control_extra.g * tex2D(_Splat5, uvSplat5) * half4(1.0, 1.0, 1.0, smoothness1.g);
			mixedDiffuse += splat_control_extra.b * tex2D(_Splat6, uvSplat6) * half4(1.0, 1.0, 1.0, smoothness1.b);
			mixedDiffuse += splat_control_extra.a * tex2D(_Splat7, uvSplat7) * half4(1.0, 1.0, 1.0, smoothness1.a);

			fixed4 nrm = 0.0f;
			nrm += splat_control.r       * tex2D(_Normal0, uvSplat0);
			nrm += splat_control.g       * tex2D(_Normal1, uvSplat1);
			nrm += splat_control.b       * tex2D(_Normal2, uvSplat2);
			nrm += splat_control.a       * tex2D(_Normal3, uvSplat3);
			nrm += splat_control_extra.r * fixed4(0.5, 0.5, 1, 0.5);
			nrm += splat_control_extra.g * fixed4(0.5, 0.5, 1, 0.5);
			nrm += splat_control_extra.b * fixed4(0.5, 0.5, 1, 0.5);
			nrm += splat_control_extra.a * fixed4(0.5, 0.5, 1, 0.5);
			mixedNormal = UnpackNormal(nrm);
		}

		void surf(Input IN, inout SurfaceOutputStandard o)
		{
			half4 splat_control, splat_control_extra;
			fixed4 mixedDiffuse;
			half weight;
			half4 defaultSmoothness0 = half4(_Smoothness0, _Smoothness1, _Smoothness2, _Smoothness3);
			half4 defaultSmoothness1 = half4(_Smoothness4, _Smoothness5, _Smoothness6, _Smoothness7);
			MTE_SplatmapMix(IN, defaultSmoothness0, defaultSmoothness1, splat_control, splat_control_extra, weight, mixedDiffuse, o.Normal);
			o.Albedo = mixedDiffuse.rgb;
			o.Alpha = weight;
			o.Smoothness = mixedDiffuse.a;
			o.Metallic = dot(splat_control, half4(_Metallic0, _Metallic1, _Metallic2, _Metallic3)) + dot(splat_control_extra, half4(_Metallic4, _Metallic5, _Metallic6, _Metallic7));
		}
	ENDCG
	
	Category
	{
		Tags
		{
			"Queue" = "Geometry-99"
			"RenderType" = "Opaque"
		}
		SubShader//for target 3.0+
		{
			CGPROGRAM
				#pragma target 3.0
			ENDCG
		}
	}

	Fallback "MTE/Standard/8 Textures/Diffuse"
	CustomEditor "MTE.MTEShaderGUI"
}