water

Shader "Custom/Water"
{
    Properties
    {
        
        _BumpMap ("Normal Map", 2D) = "white" {}
        _Cube ("Cube", Cube) = ""{}
    }
    SubShader
    {
        Tags { "RenderType"="Transparent" "Queue"="Transparent" }
        
        CGPROGRAM
        
        #pragma surface surf Lambert alpha:premul

        sampler2D _BumpMap;
        samplerCUBE _Cube;

        struct Input
        {
            float2 uv_BumpMap;
            float3 worldRefl;
            float3 viewDir;
            INTERNAL_DATA
        };

        void surf (Input i, inout SurfaceOutput o)
        {
            float3 normal1 = UnpackNormal(tex2D (_BumpMap, i.uv_BumpMap + _Time.x * 0.1));
            float3 normal2 = UnpackNormal(tex2D (_BumpMap, i.uv_BumpMap - _Time.x * 0.1));

            o.Normal =  (normal1 + normal2)/2;

            float3 refColor = texCUBE(_Cube, WorldReflectionVector(i, o.Normal));

            float rim = saturate(dot(o.Normal, i.viewDir));
            rim = pow(1-rim, 1.5);
            o.Emission = refColor * rim * 2;
            //o.Emission = refColor;
            //o.Alpha = 0.2;
            o.Alpha = saturate(rim +0.5);

        }
        ENDCG
    }
    FallBack "Lagacy Shaders/Transparent/VertexLit"
}