// Upgrade NOTE: replaced '_Projector' with 'unity_Projector'

// Upgrade NOTE: replaced '_ProjectorClip' with 'unity_ProjectorClip'

Shader "Projector/Multiply" {

	Properties {

		_ShadowTex ("Cookie", 2D) = "gray" {}

		_FalloffTex ("FallOff", 2D) = "white" {}

	}

	Subshader {

		Tags {"Queue"="Transparent"}

		Pass {

			ZWrite Off

			ColorMask RGB

			Blend DstColor Zero

			Offset -1, -1

			CGPROGRAM

			#pragma vertex vert

			#pragma fragment frag

			#pragma multi_compile_fog

			#include "UnityCG.cginc"

			struct v2f {

				float4 uvShadow : TEXCOORD0;

				float4 uvFalloff : TEXCOORD1;

				UNITY_FOG_COORDS(2)

				float4 pos : SV_POSITION;

			};

			float4x4 unity_Projector;

			float4x4 unity_ProjectorClip;

			v2f vert (float4 vertex : POSITION)

			{

				v2f o;

				o.pos = mul (UNITY_MATRIX_MVP, vertex);

				o.uvShadow = mul (unity_Projector, vertex);

				o.uvFalloff = mul (unity_ProjectorClip, vertex);

				UNITY_TRANSFER_FOG(o,o.pos);

				return o;

			}

			sampler2D _ShadowTex;

			sampler2D _FalloffTex;

			fixed4 frag (v2f i) : SV_Target

			{

				fixed4 texS = tex2Dproj (_ShadowTex, UNITY_PROJ_COORD(i.uvShadow));

				texS.a = 1.0-texS.a;

				fixed4 texF = tex2Dproj (_FalloffTex, UNITY_PROJ_COORD(i.uvFalloff));

				fixed4 res = lerp(fixed4(1,1,1,0), texS, texF.a);

				UNITY_APPLY_FOG_COLOR(i.fogCoord, res, fixed4(1,1,1,1));

				return res;

			}

			ENDCG

		}

	}

}