Shader "Fluvio/Particles/Multiply" {
	Properties {
		_TintColor("Tint Color", Color) = (1, 1, 1, 1)
		_Intensity ("Intensity", Float) = 2.2
		_MainTex ("Base (RGB)", 2D) = "white" {}
		_BumpMap ("Distort (in RG channels)", 2D) = "blue" {}
		_Distort ("Distort", Float) = 0.1
		_WaveMod ("Wave Speed (XY) Wave Strength (ZW)", Vector) = (2, 6, .02, .025)
		_InvFade ("Soft Particles Factor", Range(0.01,3.0)) = 1.0
	}
	
	CGINCLUDE
	
		#include "FluidParticleShader.cginc"
		#include "UnityCG.cginc"
		
		uniform half4 _TintColor;
		uniform half _Intensity;
		uniform sampler2D _BumpMap;
		uniform half _Distort;
		uniform half4 _WaveMod;

		sampler2D _GrabTex;
		
	
		half4 fragB ( v2fB i ) : COLOR
		{	
			#ifdef SOFTPARTICLES_ON
			float sceneZ = LinearEyeDepth (UNITY_SAMPLE_DEPTH(tex2Dproj(_CameraDepthTexture, UNITY_PROJ_COORD(i.uvScreen))));
			float partZ = i.uvScreen.z;
			float fade = saturate (_InvFade * (sceneZ-partZ));
			#endif
			
			half4 off = half4(sin(_Time.y * _WaveMod.x) * _WaveMod.z, cos(_Time.y * _WaveMod.y) * _WaveMod.w, 0.5, 0.5);
			half4 normal = tex2D (_BumpMap, i.uv) - off - 0.5;
			i.uvScreen.xy += half2(normal.x, normal.y) * _Distort;
			
			half4 mainTex = tex2D (_MainTex, i.uv);
            half4 tint = mainTex * _TintColor;
			half4 screen = tex2Dproj (_GrabTex, UNITY_PROJ_COORD (i.uvScreen)) * (tint * i.color * tint.a * _Intensity);
			screen.a = mainTex.a * i.color.a;
			
			#ifdef SOFTPARTICLES_ON
			screen.a *= fade;
			#endif
			
			return screen;
		}
	
	ENDCG
	
	SubShader {
		Tags {"Queue"="Transparent+100"  "RenderType"="Transparent"}
		Cull Off
		ZWrite Off
		ZTest LEqual
		Blend SrcAlpha OneMinusSrcAlpha
		
	GrabPass { "_GrabTex" }
		
	Pass {
		
		CGPROGRAM
		
		#pragma vertex vertB
		#pragma fragment fragB
		#pragma fragmentoption ARB_precision_hint_fastest
		#pragma multi_compile_particles
		
		ENDCG
		 
		}
				
	}
	Fallback "Fluvio/Particles/No GrabPass/Multiply"
}