WaveDoublePass

Shader "Custom/WavingDoublePass"
{
    Properties
    {
        _WavingTint("Fade Color", Color) = (.7,.6,.5, 0)
        _MainTex("Base (RGB) Alpha (A)", 2D) = "white" {}
        _WaveAndDistance("Wave and distance", Vector) = (12, 3.6, 1, 1)
        _Cutoff("Cutoff", float) = 0.5
        _Cutoff2("Cutoff2", float) = 0.5
    }

    SubShader
    {
        Tags
        {
            "Queue" = "Geometry+200"
            "IgnoreProjector" = "True"
            "RenderType" = "Grass"
        }
        Cull Off
        LOD 200
        ColorMask RGB

        CGPROGRAM
#pragma surface surf Lambert vertex:WavingGrassVert addshadow alphatest:_Cutoff2
#pragma exclude_renderers flash
#include "TerrainEngine.cginc"

        sampler2D _MainTex;
        fixed _Cutoff;

        struct Input
        {
            float2 uv_MainTex;
            fixed4 color : COLOR;
        };

        void surf(Input IN, inout SurfaceOutput o)
        {
            fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * IN.color;
            fixed4 d = tex2D(_MainTex, IN.uv_MainTex);
            o.Albedo = c.rgb;
            o.Alpha = d.a;
            clip(o.Alpha - _Cutoff);
        }
        ENDCG
    }

    SubShader
    {
        Tags
        {
            "Queue" = "Geometry+200"
            "IgnoreProjector" = "True"
            "RenderType" = "Grass"
        }
        Cull Off
        LOD 200
        ColorMask RGB

        Pass
        {
            Tags{ "LightMode" = "Vertex" }
            Material
            {
                Diffuse(1,1,1,1)
                Ambient(1,1,1,1)
            }
            Lighting On
            ColorMaterial AmbientAndDiffuse
            AlphaTest Greater[_Cutoff]
            SetTexture[_MainTex]{ combine texture * primary DOUBLE, texture }
        }
        Pass
        {
            Tags { "LightMode" = "VertexLMRGBM" }
            AlphaTest Greater[_Cutoff]
            BindChannels
            {
                Bind "Vertex", vertex
                Bind "texcoord1", texcoord0 // lightmap uses 2nd uv
                Bind "texcoord", texcoord1 // main uses 1st uv
            }
            SetTexture[unity_Lightmap]
            {
                matrix[unity_LightmapMatrix]
                combine texture * texture alpha DOUBLE
            }
            SetTexture[_MainTex]{ combine texture * previous QUAD, texture }
        }
    }
    Fallback Off
}