modified maps

modified maps

Assets/NatureStarterKit2/Standard Assets/Effects/ImageEffects/Shaders/FisheyeShader.shader

@@ -0,0 +1,60 @@
+// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
+
+Shader "Hidden/FisheyeShader" {
+	Properties {
+		_MainTex ("Base (RGB)", 2D) = "" {}
+	}
+	
+	// Shader code pasted into all further CGPROGRAM blocks
+	CGINCLUDE
+	
+	#include "UnityCG.cginc"
+	
+	struct v2f {
+		float4 pos : SV_POSITION;
+		float2 uv : TEXCOORD0;
+	};
+	
+	sampler2D _MainTex;
+	
+	float2 intensity;
+	
+	v2f vert( appdata_img v ) 
+	{
+		v2f o;
+		o.pos = UnityObjectToClipPos(v.vertex);
+		o.uv = v.texcoord.xy;
+		return o;
+	} 
+	
+	half4 frag(v2f i) : SV_Target 
+	{
+		half2 coords = i.uv;
+		coords = (coords - 0.5) * 2.0;		
+		
+		half2 realCoordOffs;
+		realCoordOffs.x = (1-coords.y * coords.y) * intensity.y * (coords.x); 
+		realCoordOffs.y = (1-coords.x * coords.x) * intensity.x * (coords.y);
+		
+		half4 color = tex2D (_MainTex, i.uv - realCoordOffs);	 
+		
+		return color;
+	}
+
+	ENDCG 
+	
+Subshader {
+ Pass {
+	  ZTest Always Cull Off ZWrite Off
+
+      CGPROGRAM
+      #pragma vertex vert
+      #pragma fragment frag
+      ENDCG
+  }
+  
+}
+
+Fallback off
+	
+} // shader