* amplify shader editor

1 files changed, 49 insertions, 0 deletions

diff --git a/Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_TFHCRemap.shader b/Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_TFHCRemap.shader
new file mode 100644
index 00000000..bf10c8a1
--- /dev/null
+++ b/Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_TFHCRemap.shader
@@ -0,0 +1,49 @@
+Shader "Hidden/TFHCRemap"
+{
+	Properties
+	{
+		_A ("_Value", 2D) = "white" {}
+		_B ("_MinOld", 2D) = "white" {}
+		_C ("_MaxOld", 2D) = "white" {}
+		_D ("_MinNew", 2D) = "white" {}
+		_E ("_MaxNew", 2D) = "white" {}
+	}
+	SubShader
+	{
+		Pass
+		{
+			CGPROGRAM
+			#include "UnityCG.cginc"
+			#pragma vertex vert_img
+			#pragma fragment frag
+
+			sampler2D _A;
+			sampler2D _B;
+			sampler2D _C;
+			sampler2D _D;
+			sampler2D _E;
+
+			float4 frag(v2f_img i) : SV_Target
+			{
+				float4 value = tex2D( _A, i.uv );
+				float4 minold = tex2D( _B, i.uv );
+				float4 maxold = tex2D( _C, i.uv );
+				float4 minnew = tex2D( _D, i.uv );
+				float4 maxnew = tex2D( _E, i.uv );
+
+				float4 denom = maxold - minold;
+				if(denom.x == 0)
+					denom.x = 0.000001;
+				if(denom.y == 0)
+					denom.y = 0.000001;
+				if(denom.z == 0)
+					denom.z = 0.000001;
+				if(denom.w == 0)
+					denom.w = 0.000001;
+
+				return (minnew + (value - minold) * (maxnew - minnew) / denom);
+			}
+			ENDCG
+		}
+	}
+}