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Assets/MeatKit/Tools/IconAssets/Shaders/BlackWhiteEffect.shader

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+Shader "Image/BlackWhiteEffect"
+{
+	Properties
+	{
+		_MainTex ("Texture", 2D) = "white" {}
+		_MinBrightness("Min Brightness", Float) = 0
+		_MaxBrightness("Max Brightness", Float) = 1
+		_ColorBands("Color Bands", Float) = 1000
+		_DarkColor("Dark Color", Color) = (0, 0, 0, 1)
+		_BrightColor("Bright Color", Color) = (1, 1, 1, 1)
+		_LightToNormalFactor("Light To Normal Factor", Range(0, 1)) = 1
+	}
+	SubShader
+	{
+		// No culling or depth
+		Cull Off ZWrite Off ZTest Always
+
+		Pass
+		{
+			CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+			
+			#include "UnityCG.cginc"
+
+			struct appdata
+			{
+				float4 vertex : POSITION;
+				float2 uv : TEXCOORD0;
+			};
+
+			struct v2f
+			{
+				float2 uv : TEXCOORD0;
+				float4 vertex : SV_POSITION;
+			};
+			
+			float remap(float value, float from1, float to1, float from2, float to2) {
+				return (value - from1) / (to1 - from1) * (to2 - from2) + from2;
+			}
+
+
+			v2f vert (appdata v)
+			{
+				v2f o;
+				o.vertex = UnityObjectToClipPos(v.vertex);
+				o.uv = v.uv;
+				return o;
+			}
+			
+			sampler2D _MainTex, _CameraDepthNormalsTexture;
+			float _MinBrightness, _MaxBrightness, _ColorBands, _LightToNormalFactor;
+			fixed4 _DarkColor, _BrightColor;
+			
+			fixed4 frag (v2f i) : SV_Target
+			{
+				float4 depthnormal = tex2D(_CameraDepthNormalsTexture, i.uv);
+				fixed4 col = tex2D(_MainTex, i.uv);
+
+				//decode depthnormal
+				float3 normal;
+				float depth;
+				DecodeDepthNormal(depthnormal, depth, normal);
+
+				//Get the luminance and process it
+				fixed normalLuminance = Luminance(fixed3(normal.b, normal.b, normal.b));
+				fixed lightLuminance = Luminance(fixed3(col.r, col.g, col.b));
+
+				fixed luminance = lerp(normalLuminance, lightLuminance, _LightToNormalFactor);
+
+				luminance = remap(luminance, 0, 1, _MinBrightness, _MaxBrightness);
+				luminance = floor(luminance * _ColorBands) / _ColorBands;
+
+				float depthFactor = 1 - step(1, depth);
+				fixed4 output = lerp(_DarkColor, _BrightColor, luminance);
+				output = fixed4(output.r, output.g, output.b, depthFactor);
+
+				return output;
+			}
+			ENDCG
+		}
+	}
+}

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