SelectDecalMap3.shader

Shader "SelectDecalMap3" {
	Properties {
		_MainTex ("RenderTex", 2D) = "white" {}
		_GrandTex ("_GrandTex", 2D) = "white" {}
		_DecalATex ("_DecalATex", 2D) = "white" {}
		_DecalBTex ("_DecalBTex", 2D) = "white" {}
		_DecalCTex ("_DecalCTex", 2D) = "white" {}

	}
	SubShader {
		Tags { "RenderType" = "Opaque" }
		CGPROGRAM
		#pragma surface surf Lambert
		struct Input {
			float3 worldPos;
			float2 uv_MainTex;
		};
		sampler2D _MainTex;
		sampler2D _GrandTex;
		sampler2D _DecalATex;
		sampler2D _DecalBTex;
		sampler2D _DecalCTex;
		void surf (Input In, inout SurfaceOutput o) {
			float3 tmp = (In.worldPos + float3(5,0,5)) * 0.1f;// 位置をUV空間に　フィールドが原点配置10x10のため
			float2 uv_Field = float2(tmp.x,tmp.z);
			float3 renderTexColG = tex2D (_MainTex, uv_Field).rrr;
			float3 renderTexColA = tex2D (_MainTex, uv_Field).rrr;
			float3 renderTexColB = tex2D (_MainTex, uv_Field).ggg;
			float3 renderTexColC = tex2D (_MainTex, uv_Field).bbb;
			float3 decalGCol = tex2D (_GrandTex, In.uv_MainTex).rgb;
			float3 decalACol = tex2D (_DecalATex, In.uv_MainTex).rgb;
			float3 decalBCol = tex2D (_DecalBTex, In.uv_MainTex).rgb;
			float3 decalCCol = tex2D (_DecalCTex, In.uv_MainTex).rgb;
			float3 dG=(decalGCol*(1-renderTexColG));//(decalACol*renderTexColG);
			float3 dA=(decalACol*renderTexColA);
			float3 dB=(decalACol*renderTexColB);
			float3 dC=(decalACol*renderTexColC);   //(decalGCol*(1-renderTexColG));

			o.Albedo =(dA+dB+dC)/3+dG;
			//o.Albedo =(decalACol*renderTexColA)  + (decalGCol*(1-renderTexColG));
		}
		ENDCG
	} 
}