1 files changed, 32 insertions, 0 deletions
diff --git a/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/ImageEffects/LuminanceNode.cs b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/ImageEffects/LuminanceNode.cs
new file mode 100644
index 00000000..2582a59b
--- /dev/null
+++ b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/ImageEffects/LuminanceNode.cs
@@ -0,0 +1,32 @@
+// Amplify Shader Editor - Visual Shader Editing Tool
+// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
+
+using System;
+
+namespace AmplifyShaderEditor
+{
+	[Serializable]
+	[NodeAttributes( "Luminance", "Image Effects", "Calculates Luminance value from input")]
+	public sealed class LuminanceNode : ParentNode
+	{
+		protected override void CommonInit( int uniqueId )
+		{
+			base.CommonInit( uniqueId );
+			AddInputPort( WirePortDataType.FLOAT3, false, "RGB" );
+			AddOutputPort( WirePortDataType.FLOAT, Constants.EmptyPortValue );
+			m_previewShaderGUID = "81e1d8ffeec8a4b4cabb1094bc981048";
+		}
+
+		public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalvar )
+		{
+			if( m_outputPorts[ 0 ].IsLocalValue( dataCollector.PortCategory ) )
+				return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
+
+			string value = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
+			string grayscale = "Luminance(" + value + ")";
+
+			RegisterLocalVariable( 0, grayscale, ref dataCollector, "luminance" + OutputId );
+			return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
+		}
+	}
+}