Shader "MY/DissolveBurn"
{
	Properties
	{
		_Color("Main Color", Color) = (0.7,0.7,0.7,1)
		_Amount("Amount", Range(0, 1)) = 0.5
		_StartAmount("StartAmount", float) = 0.1
		_MainTex("Base (RGB) Gloss (A)", 2D) = "white" {}
		_AlphaTex("AlphaTex",2D) = "white"{}
		_DissolveSrc("DissolveSrc", 2D) = "white" {}
		_Cutoff("Alpha cutoff", Range(0,1)) = 0.5
	}

		SubShader
		{
			Tags {"Queue" = "AlphaTest" "IgnoreProjector" = "true"}
			CGPROGRAM


			#pragma target 3.0
			#pragma surface surf BasicDiffuse nolightmap nodirlightmap noforwardadd alphatest:_Cutoff

			sampler2D _MainTex;
			sampler2D _AlphaTex;
			sampler2D _DissolveSrc;

			fixed4 _Color;
			half _Amount;
			static fixed3 Color = fixed3(1,1,1);
			half _StartAmount;

			struct Input
			{
				half2 uv_MainTex;
				half2 uvDissolveSrc;
			};

			void surf(Input IN, inout SurfaceOutput o)
			{
				fixed4 tex = tex2D(_MainTex, IN.uv_MainTex);
				o.Albedo = tex.rgb*0.5f;

				half ClipTex = tex2D(_DissolveSrc, IN.uv_MainTex).r;
				half ClipAmount = ClipTex - _Amount;
				half Clip = 0;
				if (_Amount > 0)
				{
					if (ClipAmount < 0)
					{
						Clip = 1;
					}
					else
					{
						if (ClipAmount < _StartAmount)
						{
							Color.x = ClipAmount / _StartAmount;
							Color.y = ClipAmount / _StartAmount;
							Color.z = ClipAmount / _StartAmount;
							o.Albedo = (o.Albedo *((Color.x + Color.y + Color.z))* Color*((Color.x + Color.y + Color.z)));
						}
					}
				 }
				fixed a = tex2D(_AlphaTex, IN.uv_MainTex).r * tex.a * _Color.a;
				o.Alpha = a;
				if (Clip == 1)
					clip(-0.1);
			}

			inline fixed4 LightingBasicDiffuse(SurfaceOutput s, fixed3 lightDir, fixed atten)
			{
				fixed4 col;
				col.rgb = s.Albedo;
				col.a = s.Alpha;
				return col;
			}

			ENDCG
		}
}