Tri-Planar Bumped.shader

Shader "Tri-Planar Bumped" {
  Properties {
		_Side("Side", 2D) = "white" {}
		_BumpMap ("Bumpmap", 2D) = "bump" {}
		_Top("Top", 2D) = "white" {}
		_SideScale("Side Scale", Float) = 2
		_TopScale("Top Scale", Float) = 2
	}
	
	SubShader {
		Tags {
			"RenderType"="Opaque"
		}
		
		CGPROGRAM

		#pragma target 3.0
		#pragma surface surf Lambert
		
		sampler2D _Side;
		sampler2D _Top;
		sampler2D _BumpMap;
		float _SideScale, _TopScale;
		
		struct Input {
			float3 worldPos;
			float3 worldNormal;
		};

		void surf (Input IN, inout SurfaceOutput o) {
			half3 blendWeights = abs( IN.worldNormal.xyz );

			//Sample textures
			half4 colourSide = tex2D(_Side, (IN.worldPos.yz * _SideScale));
			half4 colourTop = tex2D(_Top, (IN.worldPos.zx * _TopScale));
			half4 colourBottom = tex2D(_Side, (IN.worldPos.xy * _SideScale));
			
			half4 final;
			final = colourSide;
			
			o.Albedo = final.rgb;
			o.Normal = UnpackNormal (tex2D (_BumpMap, IN.worldPos.yz * _SideScale));
		}

		ENDCG
	}
	Fallback "Diffuse"
}