Shader terrain

// Upgrade NOTE: replaced '_Object2World' with 'unity_ObjectToWorld'

// Upgrade NOTE: replaced '_Object2World' with 'unity_ObjectToWorld'

Shader "Terrains/Terrain"
{
	Properties
	{
		_MainTex ("Texture", 2D) = "gray" {}
		_NoiseTexture ("Texture", 2D) = "white" {}
	}
	SubShader
	{
		Tags { "RenderType"="Opaque" }
		LOD 100

		Pass
		{
			CGPROGRAM
			#pragma vertex vert
			#pragma fragment frag
			// make fog work
			#pragma multi_compile_fog

			#include "UnityCG.cginc"

			struct appdata
			{
				float4 vertex : POSITION;
				float2 uv : TEXCOORD0;
				float4 worldPosition : TEXCOORD1;
			};

			struct v2f
			{
				float2 uv : TEXCOORD0;
				UNITY_FOG_COORDS(1)
				float4 vertex : SV_POSITION;
			};

			sampler2D _MainTex;
			float4 _MainTex_ST;
			sampler2D _NoiseTexture;

			v2f vert (appdata v)
			{
				v2f o;
				float3 worldPos = mul (unity_ObjectToWorld, v.vertex).xyz;
				float4 offset = float4(0,tex2Dlod(_NoiseTexture, float4( worldPos.x / 100 , worldPos.z / 100 ,0,0)).r * 15,0,0);

				o.vertex = UnityObjectToClipPos(v.vertex + offset);

				o.uv = TRANSFORM_TEX(v.uv, _MainTex);
				UNITY_TRANSFER_FOG(o,o.vertex);

				return o;
			}

			fixed4 frag (v2f i) : SV_Target
			{
				// sample the texture
				fixed4 col = tex2D(_MainTex, i.uv);
				col.b = i.vertex.y / 700;
				// apply fog
				UNITY_APPLY_FOG(i.fogCoord, col);
				return col;
			}
			ENDCG
		}
	}
}