modified maps

modified maps

Assets/NatureStarterKit2/Standard Assets/Effects/ImageEffects/Shaders/Contrast Stretch/Apply.shader

@@ -0,0 +1,57 @@
+// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
+
+// Final pass in the contrast stretch effect: apply
+// color stretch to the original image, based on currently
+// adapted to minimum/maximum luminances.
+
+Shader "Hidden/Contrast Stretch Apply" {
+Properties {
+	_MainTex ("Base (RGB)", 2D) = "white" {}
+	_AdaptTex ("Base (RGB)", 2D) = "white" {}
+}
+
+Category {
+	SubShader {
+		Pass {
+			ZTest Always Cull Off ZWrite Off
+				
+CGPROGRAM
+#pragma vertex vert
+#pragma fragment frag
+#include "UnityCG.cginc"
+
+struct v2f {
+	float4 pos		: SV_POSITION;
+	float2 uv[2]	: TEXCOORD0;
+}; 
+
+uniform sampler2D _MainTex;
+uniform sampler2D _AdaptTex;
+
+v2f vert (appdata_img v)
+{
+	v2f o;
+	o.pos = UnityObjectToClipPos (v.vertex);
+	o.uv[0] = MultiplyUV (UNITY_MATRIX_TEXTURE0, v.texcoord);
+	o.uv[1] = float2(0.5,0.5);
+	return o;
+}
+
+float4 frag (v2f i) : SV_Target
+{
+	float4 col = tex2D(_MainTex, i.uv[0]);
+	float4 adapted = tex2D(_AdaptTex, i.uv[1]);
+	float vmul = 1.0 / adapted.z;
+	float vadd = -adapted.w;
+	col.rgb = col.rgb * vmul + vadd;	
+	return col;
+}
+ENDCG
+
+		}
+	}
+}
+
+Fallback off
+
+}