Add shaders

Sources/Shaders/GridProjectorMultiply.shader

@@ -0,0 +1,48 @@
+Shader "AdvancedTerrainGrass/GridProjector" {
+	Properties {
+		_MainTex ("Cookie", 2D) = "gray" {}
+	}
+	Subshader {
+		Tags {"Queue"="Transparent"}
+		Pass {
+			ZWrite Off
+			ColorMask RGB
+			Blend DstColor Zero
+			Offset -1, -1
+
+			CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+			#pragma multi_compile_fog
+			#include "UnityCG.cginc"
+			
+			struct v2f {
+				float4 uv : TEXCOORD0;
+				float4 pos : SV_POSITION;
+			};
+			
+			float4x4 unity_Projector;
+			float4x4 unity_ProjectorClip;
+
+			float4 _MainTex_ST;
+			
+			v2f vert (float4 vertex : POSITION)
+			{
+				v2f o;
+				o.pos = UnityObjectToClipPos(vertex);
+				o.uv = mul (unity_Projector, vertex    );
+				return o;
+			}
+			
+			sampler2D _MainTex;
+			
+			fixed4 frag (v2f i) : SV_Target
+			{
+				fixed4 tex = tex2D (_MainTex, i.uv * _MainTex_ST.xx - float2(0.5, 0.5) );
+				tex = saturate( tex + 0.35);
+				return tex;
+			}
+			ENDCG
+		}
+	}
+}