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Unity 3D Water

gannonroader
polycounter lvl 8
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gannonroader polycounter lvl 8
Hey guys, I was hoping someone could help me with this.

I'm looking to tweak the existing night time water shader within unity to allow it to reflect (probably faked) and allow for a bit of depth. As in, you can see what is a foot or two beneath the surface before it turns opaque. I ran a search and couldn't find anything that relates to this, but I may have missed it. Here's a look at their shader
Shader "FX/Water (simple)" {
Properties {
_horizonColor ("Horizon color", COLOR) = ( .172 , .463 , .435 , 0)
_WaveScale ("Wave scale", Range (0.02,0.15)) = .07
_ColorControl ("Reflective color (RGB) fresnel (A) ", 2D) = "" { }
_ColorControlCube ("Reflective color cube (RGB) fresnel (A) ", Cube) = "" { TexGen CubeReflect }
_BumpMap ("Waves Normalmap ", 2D) = "" { }
_WaveSpeed ("Wave speed (map1 x,y; map2 x,y)", Vector) = (19,9,-16,-7)
_MainTex ("Fallback texture", 2D) = "" { }
}

CGINCLUDE
//
// This section is included in all program sections below

#include "UnityCG.cginc"

uniform float4 _horizonColor;

uniform float4 WaveSpeed;
uniform float _WaveScale;
uniform float4 _WaveOffset;

struct appdata {
float4 vertex : POSITION;
float3 normal : NORMAL;
};

struct v2f {
float4 pos : SV_POSITION;
float2 bumpuv[2] : TEXCOORD0;
float3 viewDir : TEXCOORD2;
};

v2f vert(appdata v)
{
v2f o;
float4 s;

o.pos = mul (UNITY_MATRIX_MVP, v.vertex);

// scroll bump waves
float4 temp;
temp.xyzw = v.vertex.xzxz * _WaveScale / unity_Scale.w + _WaveOffset;
o.bumpuv[0] = temp.xy * float2(.4, .45);
o.bumpuv[1] = temp.wz;

// object space view direction
o.viewDir.xzy = normalize( ObjSpaceViewDir(v.vertex) );

return o;
}

ENDCG

//
// Fragment program




Subshader {
Tags { "RenderType"="Opaque" }
Pass {

CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma fragmentoption ARB_precision_hint_fastest

sampler2D _BumpMap;
sampler2D _ColorControl;

half4 frag( v2f i ) : COLOR
{
half3 bump1 = UnpackNormal(tex2D( _BumpMap, i.bumpuv[0] )).rgb;
half3 bump2 = UnpackNormal(tex2D( _BumpMap, i.bumpuv[1] )).rgb;
half3 bump = (bump1 + bump2) * 0.5;

half fresnel = dot( i.viewDir, bump );
half4 water = tex2D( _ColorControl, float2(fresnel,fresnel) );

half4 col;
col.rgb = lerp( water.rgb, _horizonColor.rgb, water.a );
col.a = _horizonColor.a;
return col;
}
ENDCG
}
}

//
// Old cards

// three texture, cubemaps
Subshader {
Tags { "RenderType"="Opaque" }
Pass {
Color (0.5,0.5,0.5,0.5)
SetTexture [_MainTex] {
Matrix [_WaveMatrix]
combine texture * primary
}
SetTexture [_MainTex] {
Matrix [_WaveMatrix2]
combine texture * primary + previous
}
SetTexture [_ColorControlCube] {
combine texture +- previous, primary
Matrix [_Reflection]
}
}
}

// dual texture, cubemaps
Subshader {
Tags { "RenderType"="Opaque" }
Pass {
Color (0.5,0.5,0.5,0.5)
SetTexture [_MainTex] {
Matrix [_WaveMatrix]
combine texture
}
SetTexture [_ColorControlCube] {
combine texture +- previous, primary
Matrix [_Reflection]
}
}
}

// single texture
Subshader {
Tags { "RenderType"="Opaque" }
Pass {
Color (0.5,0.5,0.5,0)
SetTexture [_MainTex] {
Matrix [_WaveMatrix]
combine texture, primary
}
}
}

}




Any help would be so awesome.


Thanks in advance.
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