1 files changed, 120 insertions, 0 deletions
diff --git a/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/Vertex/TangentVertexDataNode.cs b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/Vertex/TangentVertexDataNode.cs
new file mode 100644
index 00000000..da6d25ff
--- /dev/null
+++ b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/Vertex/TangentVertexDataNode.cs
@@ -0,0 +1,120 @@
+// Amplify Shader Editor - Visual Shader Editing Tool
+// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
+using System;
+using UnityEditor;
+using UnityEngine;
+
+namespace AmplifyShaderEditor
+{
+	[Serializable]
+	[NodeAttributes( "Vertex Tangent", "Vertex Data", "Vertex tangent vector in object space, can be used in both local vertex offset and fragment outputs" )]
+	public sealed class TangentVertexDataNode : VertexDataNode
+	{
+		private const string PropertyLabel = "Size";
+		private readonly string[] SizeLabels = { "XYZ", "XYZW" };
+
+		[SerializeField]
+		private int m_sizeOption = 0;
+
+		private UpperLeftWidgetHelper m_upperLeftWidget = new UpperLeftWidgetHelper();
+
+		protected override void CommonInit( int uniqueId )
+		{
+			base.CommonInit( uniqueId );
+			m_currentVertexData = "tangent";
+			ChangeOutputProperties( 0, "XYZ", WirePortDataType.FLOAT3 );
+			m_outputPorts[ 4 ].Visible = false;
+			m_drawPreviewAsSphere = true;
+			m_hasLeftDropdown = true;
+			m_previewShaderGUID = "0a44bb521d06d6143a4acbc3602037f8";
+		}
+
+		public override void Destroy()
+		{
+			base.Destroy();
+			m_upperLeftWidget = null;
+		}
+
+		public override void Draw( DrawInfo drawInfo )
+		{
+			base.Draw( drawInfo );
+			EditorGUI.BeginChangeCheck();
+			m_sizeOption = m_upperLeftWidget.DrawWidget( this, m_sizeOption, SizeLabels );
+			if( EditorGUI.EndChangeCheck() )
+			{
+				UpdatePorts();
+			}
+		}
+
+		public override void DrawProperties()
+		{
+			EditorGUI.BeginChangeCheck();
+			m_sizeOption = EditorGUILayoutPopup( PropertyLabel, m_sizeOption, SizeLabels );
+			if( EditorGUI.EndChangeCheck() )
+			{
+				UpdatePorts();
+			}
+		}
+
+		void UpdatePorts()
+		{
+			if( m_sizeOption == 0 )
+			{
+				ChangeOutputProperties( 0, SizeLabels[ 0 ], WirePortDataType.FLOAT3, false );
+				m_outputPorts[ 4 ].Visible = false;
+			}
+			else
+			{
+				ChangeOutputProperties( 0, SizeLabels[ 1 ], WirePortDataType.FLOAT4, false );
+				m_outputPorts[ 4 ].Visible = true;
+			}
+		}
+
+		public override void PropagateNodeData( NodeData nodeData, ref MasterNodeDataCollector dataCollector )
+		{
+			base.PropagateNodeData( nodeData, ref dataCollector );
+			dataCollector.DirtyNormal = true;
+		}
+
+		public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalVar )
+		{
+			string vertexTangent = string.Empty;
+			if ( dataCollector.MasterNodeCategory == AvailableShaderTypes.Template )
+			{
+				vertexTangent = dataCollector.TemplateDataCollectorInstance.GetVertexTangent( WirePortDataType.FLOAT4, CurrentPrecisionType );
+				if( m_sizeOption == 0 )
+					vertexTangent += ".xyz";
+
+				return GetOutputVectorItem( 0, outputId, vertexTangent );
+			}
+
+			if ( dataCollector.PortCategory == MasterNodePortCategory.Fragment || dataCollector.PortCategory == MasterNodePortCategory.Debug )
+			{
+				dataCollector.ForceNormal = true;
+				dataCollector.AddToInput( UniqueId, SurfaceInputs.WORLD_NORMAL, CurrentPrecisionType );
+				dataCollector.AddToInput( UniqueId, SurfaceInputs.INTERNALDATA, addSemiColon: false );
+			}
+
+			WirePortDataType sizeType = m_sizeOption == 0 ? WirePortDataType.FLOAT3 : WirePortDataType.FLOAT4;
+
+			vertexTangent = GeneratorUtils.GenerateVertexTangent( ref dataCollector, UniqueId, CurrentPrecisionType, sizeType  );
+			return GetOutputVectorItem( 0, outputId, vertexTangent );
+		}
+
+		public override void ReadFromString( ref string[] nodeParams )
+		{
+			base.ReadFromString( ref nodeParams );
+			if( UIUtils.CurrentShaderVersion() > 16100 )
+			{
+				m_sizeOption = Convert.ToInt32( GetCurrentParam( ref nodeParams ) );
+				UpdatePorts();
+			}
+		}
+
+		public override void WriteToString( ref string nodeInfo, ref string connectionsInfo )
+		{
+			base.WriteToString( ref nodeInfo, ref connectionsInfo );
+			IOUtils.AddFieldValueToString( ref nodeInfo, m_sizeOption );
+		}
+	}
+}