modified maps

modified maps

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

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+Shader "Hidden/Sepiatone Effect" {
+Properties {
+	_MainTex ("Base (RGB)", 2D) = "white" {}
+}
+
+SubShader {
+	Pass {
+		ZTest Always Cull Off ZWrite Off
+				
+CGPROGRAM
+#pragma vertex vert_img
+#pragma fragment frag
+#include "UnityCG.cginc"
+
+uniform sampler2D _MainTex;
+
+fixed4 frag (v2f_img i) : SV_Target
+{	
+	fixed4 original = tex2D(_MainTex, i.uv);
+	
+	// get intensity value (Y part of YIQ color space)
+	fixed Y = dot (fixed3(0.299, 0.587, 0.114), original.rgb);
+
+	// Convert to Sepia Tone by adding constant
+	fixed4 sepiaConvert = float4 (0.191, -0.054, -0.221, 0.0);
+	fixed4 output = sepiaConvert + Y;
+	output.a = original.a;
+	
+	return output;
+}
+ENDCG
+
+	}
+}
+
+Fallback off
+
+}