Vertical Fog

Assets/Shaders/Vertical Fog Unlit/VerticalFog.shader

@@ -2,16 +2,17 @@
 {
 	Properties 
 	{
+		[Header(Object Colors)]
 	    _TopColor ("Top Y Color", Color) = (.5,.5,.5,1.0)
 		_FrontColor ("Front Z Color", Color) = (.5,.5,.5,1.0)
 		_LeftColor ("Left X Color", Color) = (.5,.5,.5,1.0)
-
+		[Header(Fog Colors)]
 		_FogColor ("Fog Color Middle", Color) = (.5,.5,.5,1.0)
 		_MidleColorEnd ("Fog Color End", Color) = (.5,.5,.5,1.0)
-
-		_AlphaPoint("Siperate fog point", float) = 1.0
-		_Range("Fog Range", float) = 1.0
-		_FO("Fog Opacity Lerp", float) = 1.0
+		[Header(Fog Settings)]
+		_AlphaPoint("Siperate top-fog point", float) = 1.0
+		_Range("Fog Range Size", float) = 1.0
+		_FO("Fog Opacity Lerp", Range(0.0,3.0)) = 1.0
 	}
 	SubShader
 	{
@@ -50,15 +51,15 @@
 		       VertexOutput o;
 		       o.pos = UnityObjectToClipPos(i.vertex);
 		       o.wp = mul(unity_ObjectToWorld, i.vertex);
+				// normal direction
+		       half3 normalDir = normalize(mul(half4(i.normal, 0), unity_ObjectToWorld).xyz); 
 
-		       half3 normalDir = normalize(mul(half4(i.normal, 0), unity_ObjectToWorld).xyz);
-
-		       if (dot(normalDir, half3(0, 1, 0)) > 0.99) 
+		       if (dot(normalDir, half3(0, 1, 0)) > 0.9) // if it is upper gorund to Y direction
 			   {
 				  o.color = _TopColor;
 			   }
 			   else
-			   {
+			   {	// set X-Direction colors
 			       o.color = lerp(_FrontColor, _LeftColor, clamp(abs(dot(normalDir, half3(1, 0, 0))), 0, 1));
 			   }