Add shaders

Sources/Shaders/WavingGrass.shader

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+// Unity built-in shader source. Copyright (c) 2016 Unity Technologies. MIT license (see license.txt)
+
+Shader "Hidden/TerrainEngine/Details/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
+}
+
+SubShader {
+	Tags {
+		"Queue" = "Geometry+200"
+		"IgnoreProjector"="True"
+		"RenderType"="Grass"
+		"DisableBatching"="True"
+	}
+	Cull Off
+	LOD 200
+		
+CGPROGRAM
+#pragma surface surf StandardSpecular vertex:WavingGrassVertATG addshadow
+//exclude_path:deferred
+#include "TerrainEngine.cginc"
+
+sampler2D _MainTex;
+fixed _Cutoff;
+
+struct Input {
+	float2 uv_MainTex;
+	fixed4 color : COLOR;
+};
+
+void WavingGrassVertATG(inout appdata_full v) {
+	float waveAmount = v.color.a * _WaveAndDistance.z;
+	//v.color.rgb = fixed3(1, 1, 1);
+	v.color = TerrainWaveGrass(v.vertex, waveAmount, v.color);
+}
+
+void surf (Input IN, inout SurfaceOutputStandardSpecular o) {
+	fixed4 c = tex2D(_MainTex, IN.uv_MainTex);// * IN.color;
+	o.Albedo = c.rgb * IN.color.rgb;
+	clip (c.a * IN.color.a - _Cutoff);
+	o.Alpha = 1;
+}
+ENDCG
+}
+	Fallback Off
+}