dat shader

Assets/Materials/Background Material.mat

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Assets/Shaders/Gridshader.shader

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+Shader "Shaders101/Colored UV"
+{
+	Properties
+	{
+		_Width("Width", Range(0.0001,0.05)) = 0.001
+		_Size("Object Size", Range(0.01,1000)) = 100
+		_MiddlePoint("Middle Point", Range(0, 1)) = 0.6
+		_Background("Background Color", Color) = (.2, .2, .2, 1)
+		_Foreground("Foreground Color", Color) = (.5, .5, .5, 1)
+		_Step("Step", Int) = 5
+		_MainTex("Texture", 2D) = "white" {}
+	}
+	SubShader
+	{
+		Tags
+		{
+			"PreviewType" = "Plane"
+		}
+		Pass
+		{
+			CGPROGRAM
+
+			#pragma vertex vert
+			#pragma fragment frag
+
+			#include "UnityCG.cginc"
+
+			struct appdata
+			{
+				float4 vertex : POSITION;
+				float2 uv : TEXCOORD0;
+			};
+
+			struct v2f
+			{
+				float4 vertex : SV_POSITION;
+				float2 uv : TEXCOORD0;
+				float4 scrPos : TEXCOORD1;
+			};
+
+			sampler2D _MainTex;
+
+			v2f vert(appdata v)
+			{
+				v2f o;
+				o.vertex = UnityObjectToClipPos(v.vertex);
+				o.scrPos = ComputeScreenPos(v.vertex);
+				o.uv = v.uv;
+				return o;
+			}
+
+			float _Width;
+			float _Size;
+			float4 _Background;
+			float _MiddlePoint;
+			float4 _Foreground;
+			int _Step;
+
+			float4 frag(v2f i) : SV_Target
+			{
+				float d = length(ObjSpaceViewDir(i.scrPos));
+				float w = d * _Width;
+				i.uv *= _Size;
+
+				float k = log(d)  / log(_Step);
+				float k0 = floor(k);
+
+				float x = d / pow(_Step, k0);
+
+				float s1 = pow(_Step, k0) * .1 / _Step;
+				float c1 = clamp(_MiddlePoint * (_Step - x) / (_Step - 1), 0, 1);
+
+				float s2 = s1 * _Step;
+				float c2 = clamp((1 - _MiddlePoint) * (_Step - x) / (_Step - 1) + _MiddlePoint, 0, 1);
+
+				float s3 = s2 * _Step;
+
+				float2 uv = i.uv;
+				
+				float grid1 = clamp(1 - step(w, fmod(uv.x + w * .5, s1)) + 1 - step(w, fmod(uv.y + w * .5, s1)), 0, 1);
+				float grid2 = clamp(1 - step(w, fmod(uv.x + w * .5, s2)) + 1 - step(w, fmod(uv.y + w * .5, s2)), 0, 1);
+				float grid3 = clamp(1 - step(w, fmod(uv.x + w * .5, s3)) + 1 - step(w, fmod(uv.y + w * .5, s3)), 0, 1);
+				grid2 = clamp(grid2 - grid3, 0, 1);
+				grid1 = clamp(grid1 - grid2, 0, 1);
+
+				float a = (grid1 * c1 + grid2 * c2 + grid3);
+
+				return (1 - a) * _Background + a * _Foreground;
+			}
+			ENDCG
+		}
+	}
+}

Assets/Shaders/Gridshader.shader.meta

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