Add shaders

Sources/Shaders/DiffuseBase.shader

@@ -0,0 +1,39 @@
+// Unity built-in shader source. Copyright (c) 2016 Unity Technologies. MIT license (see license.txt)
+
+Shader "GlobalSnow/Excluded Terrain/Diffuse-Base" {
+Properties {
+    _Color ("Main Color", Color) = (1,1,1,1)
+    _MainTex ("Base (RGB)", 2D) = "white" {}
+}
+SubShader {
+    Tags { "RenderType"="Opaque" }
+    LOD 200
+Stencil {
+    Ref 8
+    WriteMask 8
+    Comp Always
+    Pass replace
+}
+CGPROGRAM
+#pragma surface surf Lambert vertex:SplatmapVert addshadow fullforwardshadows
+#pragma instancing_options assumeuniformscaling nomatrices nolightprobe nolightmap forwardadd
+
+#define TERRAIN_BASE_PASS
+#include "TerrainSplatmapCommon.cginc"
+
+sampler2D _MainTex;
+fixed4 _Color;
+
+void surf (Input IN, inout SurfaceOutput o) {
+    fixed4 c = tex2D(_MainTex, IN.tc.xy) * _Color;
+    o.Albedo = c.rgb;
+    o.Alpha = c.a;
+}
+ENDCG
+
+UsePass "Hidden/Nature/Terrain/Utilities/PICKING"
+UsePass "Hidden/Nature/Terrain/Utilities/SELECTION"
+}
+
+Fallback "Legacy Shaders/VertexLit"
+}