Shader "Fluvio/Mobile/Particles/Additive" {
	Properties {
		_MainTex ("Base (RGB)", 2D) = "gray" {}
		_BumpMap ("Distort (in RG channels)", 2D) = "blue" {}
		_GrabTex ("Refraction Texture", 2D) = "gray" {}
		_Distort ("Distort", Float) = 0.1
		_WaveMod ("Wave Speed (XY) Wave Strength (ZW)", Vector) = (2, 6, .02, .025)
	}
	
	CGINCLUDE
	
		#include "FluidParticleShader-Mobile.cginc"
		#include "UnityCG.cginc"
		
		uniform sampler2D _BumpMap;
		uniform fixed _Distort;
		uniform fixed4 _WaveMod;

		uniform sampler2D _GrabTex;
		
		fixed4 fragB ( v2fB i ) : COLOR
		{				
			fixed4 off = fixed4(sin(_Time.y * _WaveMod.x) * _WaveMod.z, cos(_Time.y * _WaveMod.y) * _WaveMod.w, 0.5, 0.5);
			fixed4 normal = tex2D (_BumpMap, i.uv.xy) - off - 0.5;
			i.uvScreen.xy += normal.xy * _Distort;
			
            fixed4 mainTex = tex2D (_MainTex, i.uv);
            fixed4 tint = mainTex * i.color;
			fixed4 screen = tex2D(_GrabTex, i.uvScreen.xy) + tint;
			screen.a = mainTex.a;
			
			return screen;
		}
	
	ENDCG
	
	SubShader {
		Tags {"Queue"="Transparent+100"  "RenderType"="Transparent"}
		Cull Off
		ZWrite Off
		ZTest LEqual
		Blend SrcAlpha OneMinusSrcAlpha
		Lighting Off

	Pass {

		CGPROGRAM
		
		#pragma vertex vertB
		#pragma fragment fragB
		#pragma fragmentoption ARB_precision_hint_fastest
		
		ENDCG
		 
		}				
	}
}