// Amplify Shader Editor - Visual Shader Editing Tool
// Copyright (c) Amplify Creations, Lda <info@amplify.pt>

// THIS FILE IS DEPRECATED AND SHOULD NOT BE USED

#define SHOW_TEMPLATE_HELP_BOX

using System;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

namespace AmplifyShaderEditor
{
	[Serializable]
	[NodeAttributes( "Template Master Node", "Master", "Shader Generated according to template rules", null, KeyCode.None, false, true, "Template MultiPass Master Node", typeof( TemplateMultiPassMasterNode ) )]
	public sealed class TemplateMasterNode : MasterNode
	{
		private const string WarningMessage = "Templates is a feature that is still heavily under development and users may experience some problems.\nPlease email support@amplify.pt if any issue occurs.";
		private const string CurrentTemplateLabel = "Current Template";
		private const string OpenTemplateStr = "Edit Template";

		//protected const string SnippetsFoldoutStr = " Snippets";
		//[SerializeField]
		//private bool m_snippetsFoldout = true;

		[NonSerialized]
		private TemplateData m_currentTemplate = null;

		private bool m_fireTemplateChange = false;
		private bool m_fetchMasterNodeCategory = false;
		private bool m_reRegisterTemplateData = false;

		[SerializeField]
		private string m_templateGUID = string.Empty;

		[SerializeField]
		private string m_templateName = string.Empty;

		[SerializeField]
		private TemplatesBlendModule m_blendOpHelper = new TemplatesBlendModule();

		[SerializeField]
		private TemplateAlphaToMaskModule m_alphaToMaskHelper = new TemplateAlphaToMaskModule();

		[SerializeField]
		private TemplateCullModeModule m_cullModeHelper = new TemplateCullModeModule();

		[SerializeField]
		private TemplateColorMaskModule m_colorMaskHelper = new TemplateColorMaskModule();

		[SerializeField]
		private TemplatesStencilBufferModule m_stencilBufferHelper = new TemplatesStencilBufferModule();

		[SerializeField]
		private TemplateDepthModule m_depthOphelper = new TemplateDepthModule();

		[SerializeField]
		private TemplateTagsModule m_tagsHelper = new TemplateTagsModule();

		protected override void CommonInit( int uniqueId )
		{
			base.CommonInit( uniqueId );
			m_masterNodeCategory = 1;// First Template
			m_marginPreviewLeft = 20;
			m_insideSize.y = 60;
			m_customPrecision = true;
		}

		public override void ReleaseResources()
		{
			if( m_currentTemplate != null && m_currentTemplate.AvailableShaderProperties != null )
			{
				// Unregister old template properties
				int oldPropertyCount = m_currentTemplate.AvailableShaderProperties.Count;
				for( int i = 0; i < oldPropertyCount; i++ )
				{
					UIUtils.ReleaseUniformName( UniqueId, m_currentTemplate.AvailableShaderProperties[ i ].PropertyName );
				}
			}
		}

		public override void OnEnable()
		{
			base.OnEnable();
			m_reRegisterTemplateData = true;
		}

		void FetchInfoFromTemplate()
		{
			if( m_currentTemplate.BlendData.DataCheck == TemplateDataCheck.Valid )
				m_blendOpHelper.ConfigureFromTemplateData( m_currentTemplate.BlendData );

			if( m_currentTemplate.AlphaToMaskData.DataCheck == TemplateDataCheck.Valid )
				m_alphaToMaskHelper.ConfigureFromTemplateData( m_currentTemplate.AlphaToMaskData );

			if( m_currentTemplate.CullModeData.DataCheck == TemplateDataCheck.Valid )
				m_cullModeHelper.ConfigureFromTemplateData( m_currentTemplate.CullModeData );

			if( m_currentTemplate.ColorMaskData.DataCheck == TemplateDataCheck.Valid )
				m_colorMaskHelper.ConfigureFromTemplateData( m_currentTemplate.ColorMaskData );

			if( m_currentTemplate.StencilData.DataCheck == TemplateDataCheck.Valid )
				m_stencilBufferHelper.ConfigureFromTemplateData( m_currentTemplate.StencilData );

			if( m_currentTemplate.DepthData.DataCheck == TemplateDataCheck.Valid )
				m_depthOphelper.ConfigureFromTemplateData( m_currentTemplate.DepthData );

			if( m_currentTemplate.TagData.DataCheck == TemplateDataCheck.Valid )
				m_tagsHelper.ConfigureFromTemplateData( m_currentTemplate.TagData );
		}

		void FetchCurrentTemplate()
		{
			m_currentTemplate = m_containerGraph.ParentWindow.TemplatesManagerInstance.GetTemplate( m_templateGUID ) as TemplateData;
			if( m_currentTemplate == null )
			{
				m_currentTemplate = m_containerGraph.ParentWindow.TemplatesManagerInstance.GetTemplate( m_templateName ) as TemplateData;
			}

			if( m_currentTemplate != null )
			{
				if( m_inputPorts.Count != m_currentTemplate.InputDataList.Count )
				{
					DeleteAllInputConnections( true );

					List<TemplateInputData> inputDataList = m_currentTemplate.InputDataList;
					int count = inputDataList.Count;
					for( int i = 0; i < count; i++ )
					{
						AddInputPort( inputDataList[ i ].DataType, false, inputDataList[ i ].PortName, inputDataList[ i ].OrderId, inputDataList[ i ].PortCategory, inputDataList[ i ].PortUniqueId );
					}
					FetchInfoFromTemplate();
				}
				else
				{
					List<TemplateInputData> inputDataList = m_currentTemplate.InputDataList;
					int count = inputDataList.Count;
					for( int i = 0; i < count; i++ )
					{
						m_inputPorts[ i ].ChangeProperties( inputDataList[ i ].PortName, inputDataList[ i ].DataType, false );
					}
				}
			}
		}

		public override void RefreshAvailableCategories()
		{
			FetchCurrentTemplate();

			int templateCount = m_containerGraph.ParentWindow.TemplatesManagerInstance.TemplateCount;
			m_availableCategories = new MasterNodeCategoriesData[ templateCount + 1 ];
			m_availableCategoryLabels = new GUIContent[ templateCount + 1 ];

			m_availableCategories[ 0 ] = new MasterNodeCategoriesData( AvailableShaderTypes.SurfaceShader, string.Empty );
			m_availableCategoryLabels[ 0 ] = new GUIContent( "Surface" );
			if( m_currentTemplate == null )
			{
				m_masterNodeCategory = -1;
			}

			for( int i = 0; i < templateCount; i++ )
			{
				int idx = i + 1;
				TemplateData templateData = m_containerGraph.ParentWindow.TemplatesManagerInstance.GetTemplate( i ) as TemplateData;

				if( m_currentTemplate != null && m_currentTemplate.GUID.Equals( templateData.GUID ) )
					m_masterNodeCategory = idx;

				m_availableCategories[ idx ] = new MasterNodeCategoriesData( AvailableShaderTypes.Template, templateData.GUID );
				m_availableCategoryLabels[ idx ] = new GUIContent( templateData.Name );
			}
		}

		void SetCategoryIdxFromTemplate()
		{
			int templateCount = m_containerGraph.ParentWindow.TemplatesManagerInstance.TemplateCount;
			for( int i = 0; i < templateCount; i++ )
			{
				int idx = i + 1;
				TemplateData templateData = m_containerGraph.ParentWindow.TemplatesManagerInstance.GetTemplate( i ) as TemplateData;
				if( templateData != null && m_currentTemplate != null && m_currentTemplate.GUID.Equals( templateData.GUID ) )
					m_masterNodeCategory = idx;
			}
		}

		public void SetTemplate( TemplateData newTemplate, bool writeDefaultData, bool fetchMasterNodeCategory )
		{
			ReleaseResources();

			if( newTemplate == null || newTemplate.InputDataList == null )
				return;

			m_fetchMasterNodeCategory = fetchMasterNodeCategory;

			DeleteAllInputConnections( true );
			m_currentTemplate = newTemplate;
			m_currentShaderData = newTemplate.Name;

			List<TemplateInputData> inputDataList = newTemplate.InputDataList;
			int count = inputDataList.Count;
			for( int i = 0; i < count; i++ )
			{
				AddInputPort( inputDataList[ i ].DataType, false, inputDataList[ i ].PortName, inputDataList[ i ].OrderId, inputDataList[ i ].PortCategory, inputDataList[ i ].PortUniqueId );
			}

			if( writeDefaultData )
			{
				ShaderName = newTemplate.DefaultShaderName;
			}

			RegisterProperties();
			m_fireTemplateChange = true;
			m_templateGUID = newTemplate.GUID;
			m_templateName = newTemplate.DefaultShaderName;
			FetchInfoFromTemplate();
		}

		void RegisterProperties()
		{
			if( m_currentTemplate != null )
			{
				m_reRegisterTemplateData = false;
				// Register old template properties
				int newPropertyCount = m_currentTemplate.AvailableShaderProperties.Count;
				for( int i = 0; i < newPropertyCount; i++ )
				{
					int nodeId = UIUtils.CheckUniformNameOwner( m_currentTemplate.AvailableShaderProperties[ i ].PropertyName );
					if( nodeId > -1 )
					{
						ParentNode node = m_containerGraph.GetNode( nodeId );
						if( node != null )
						{
							UIUtils.ShowMessage( string.Format( "Template requires property name {0} which is currently being used by {1}. Please rename it and reload template.", m_currentTemplate.AvailableShaderProperties[ i ].PropertyName, node.Attributes.Name ) );
						}
						else
						{
							UIUtils.ShowMessage( string.Format( "Template requires property name {0} which is currently being on your graph. Please rename it and reload template.", m_currentTemplate.AvailableShaderProperties[ i ].PropertyName ) );
						}
					}
					else
					{
						UIUtils.RegisterUniformName( UniqueId, m_currentTemplate.AvailableShaderProperties[ i ].PropertyName );
					}
				}
			}
		}

		public override void DrawProperties()
		{
			if( m_currentTemplate == null )
				return;

			base.DrawProperties();

			bool generalIsVisible = ContainerGraph.ParentWindow.InnerWindowVariables.ExpandedGeneralShaderOptions;
			NodeUtils.DrawPropertyGroup( ref generalIsVisible, GeneralFoldoutStr, DrawGeneralOptions );
			ContainerGraph.ParentWindow.InnerWindowVariables.ExpandedGeneralShaderOptions = generalIsVisible;

			if( m_currentTemplate.AlphaToMaskData.DataCheck == TemplateDataCheck.Valid )
				m_alphaToMaskHelper.Draw( this );

			if( m_currentTemplate.BlendData.DataCheck == TemplateDataCheck.Valid )
				m_blendOpHelper.Draw( this );


			if( m_currentTemplate.StencilData.DataCheck == TemplateDataCheck.Valid )
			{
				CullMode cullMode = ( m_currentTemplate.CullModeData.DataCheck == TemplateDataCheck.Valid ) ? m_cullModeHelper.CurrentCullMode : CullMode.Back;
				m_stencilBufferHelper.Draw( this, cullMode );
			}

			if( m_currentTemplate.DepthData.DataCheck == TemplateDataCheck.Valid )
				m_depthOphelper.Draw( this );

			if( m_currentTemplate.TagData.DataCheck == TemplateDataCheck.Valid )
				m_tagsHelper.Draw( this );

			DrawMaterialInputs( UIUtils.MenuItemToolbarStyle );

			//	NodeUtils.DrawPropertyGroup( ref m_snippetsFoldout, SnippetsFoldoutStr, DrawSnippetOptions );
			if( GUILayout.Button( OpenTemplateStr ) && m_currentTemplate != null )
			{
				try
				{
					string pathname = AssetDatabase.GUIDToAssetPath( m_currentTemplate.GUID );
					if( !string.IsNullOrEmpty( pathname ) )
					{
						Shader selectedTemplate = AssetDatabase.LoadAssetAtPath<Shader>( pathname );
						if( selectedTemplate != null )
						{
							AssetDatabase.OpenAsset( selectedTemplate, 1 );
						}
					}
				}
				catch( Exception e )
				{
					Debug.LogException( e );
				}
			}

#if SHOW_TEMPLATE_HELP_BOX
			EditorGUILayout.HelpBox( WarningMessage, MessageType.Warning );
#endif

		}

		public void DrawGeneralOptions()
		{
			DrawShaderName();
			DrawCurrentShaderType();
			EditorGUI.BeginChangeCheck();
			DrawPrecisionProperty( false );
			if( EditorGUI.EndChangeCheck() )
				ContainerGraph.CurrentPrecision = m_currentPrecisionType;

			DrawSamplingMacros();

			if( m_currentTemplate.CullModeData.DataCheck == TemplateDataCheck.Valid )
				m_cullModeHelper.Draw( this );

			if( m_currentTemplate.ColorMaskData.DataCheck == TemplateDataCheck.Valid )
				m_colorMaskHelper.Draw( this );
		}

		//public void DrawSnippetOptions()
		//{
		//    m_currentTemplate.DrawSnippetProperties( this );
		//}

		bool CreateInstructionsForList( ref List<InputPort> ports, ref string shaderBody, ref List<string> vertexInstructions, ref List<string> fragmentInstructions )
		{
			if( ports.Count == 0 )
				return true;

			bool isValid = true;
			UIUtils.CurrentWindow.CurrentGraph.ResetNodesLocalVariables();
			for( int i = 0; i < ports.Count; i++ )
			{
				TemplateInputData inputData = m_currentTemplate.InputDataFromId( ports[ i ].PortId );
				if( ports[ i ].IsConnected )
				{
					m_currentDataCollector.ResetInstructions();
					m_currentDataCollector.ResetVertexInstructions();

					m_currentDataCollector.PortCategory = ports[ i ].Category;
					string newPortInstruction = ports[ i ].GeneratePortInstructions( ref m_currentDataCollector );


					if( m_currentDataCollector.DirtySpecialLocalVariables )
					{
						string cleanVariables = m_currentDataCollector.SpecialLocalVariables.Replace( "\t", string.Empty );
						m_currentDataCollector.AddInstructions( cleanVariables, false );
						m_currentDataCollector.ClearSpecialLocalVariables();
					}

					if( m_currentDataCollector.DirtyVertexVariables )
					{
						string cleanVariables = m_currentDataCollector.VertexLocalVariables.Replace( "\t", string.Empty );
						m_currentDataCollector.AddVertexInstruction( cleanVariables, UniqueId, false );
						m_currentDataCollector.ClearVertexLocalVariables();
					}

					// fill functions 
					for( int j = 0; j < m_currentDataCollector.InstructionsList.Count; j++ )
					{
						fragmentInstructions.Add( m_currentDataCollector.InstructionsList[ j ].PropertyName );
					}

					for( int j = 0; j < m_currentDataCollector.VertexDataList.Count; j++ )
					{
						vertexInstructions.Add( m_currentDataCollector.VertexDataList[ j ].PropertyName );
					}

					isValid = m_currentTemplate.FillTemplateBody( inputData.TagId, ref shaderBody, newPortInstruction ) && isValid;
				}
				else
				{
					isValid = m_currentTemplate.FillTemplateBody( inputData.TagId, ref shaderBody, inputData.DefaultValue ) && isValid;
				}
			}
			return isValid;
		}

		public override void Draw( DrawInfo drawInfo )
		{
			base.Draw( drawInfo );

			if( m_currentTemplate == null )
			{
				FetchCurrentTemplate();
			}

			if( m_reRegisterTemplateData )
			{
				RegisterProperties();
			}

			if( m_containerGraph.IsInstancedShader )
			{
				DrawInstancedIcon( drawInfo );
			}

			if( m_fetchMasterNodeCategory )
			{
				if( m_availableCategories != null )
				{
					m_fetchMasterNodeCategory = false;
					SetCategoryIdxFromTemplate();
				}
			}

			if( m_fireTemplateChange )
			{
				m_fireTemplateChange = false;
				m_containerGraph.FireMasterNodeReplacedEvent();
			}
		}

		public override void UpdateFromShader( Shader newShader )
		{
			if( m_currentMaterial != null )
			{
				m_currentMaterial.shader = newShader;
			}
			CurrentShader = newShader;
		}

		public override void UpdateMasterNodeMaterial( Material material )
		{
			m_currentMaterial = material;
			FireMaterialChangedEvt();
		}

		public override Shader Execute( string pathname, bool isFullPath )
		{
			if( m_currentTemplate == null )
				return m_currentShader;

			//Create data collector
			ForceReordering();
			base.Execute( pathname, isFullPath );

			SetupNodeCategories();

			m_currentDataCollector.TemplateDataCollectorInstance.BuildFromTemplateData( m_currentDataCollector, m_currentTemplate );
			int shaderPropertiesAmount = m_currentTemplate.AvailableShaderProperties.Count;
			for( int i = 0; i < shaderPropertiesAmount; i++ )
			{
				m_currentDataCollector.SoftRegisterUniform( m_currentTemplate.AvailableShaderProperties[ i ] );
			}
			m_containerGraph.CheckPropertiesAutoRegister( ref m_currentDataCollector );

			//Sort ports by both 
			List<InputPort> fragmentPorts = new List<InputPort>();
			List<InputPort> vertexPorts = new List<InputPort>();
			SortInputPorts( ref vertexPorts, ref fragmentPorts );

			string shaderBody = m_currentTemplate.TemplateBody;

			List<string> vertexInstructions = new List<string>();
			List<string> fragmentInstructions = new List<string>();

			bool validBody = true;

			validBody = CreateInstructionsForList( ref fragmentPorts, ref shaderBody, ref vertexInstructions, ref fragmentInstructions ) && validBody;
			ContainerGraph.ResetNodesLocalVariablesIfNot( MasterNodePortCategory.Vertex );
			validBody = CreateInstructionsForList( ref vertexPorts, ref shaderBody, ref vertexInstructions, ref fragmentInstructions ) && validBody;

			m_currentTemplate.ResetTemplateUsageData();

			// Fill vertex interpolators assignment
			for( int i = 0; i < m_currentDataCollector.VertexInterpDeclList.Count; i++ )
			{
				vertexInstructions.Add( m_currentDataCollector.VertexInterpDeclList[ i ] );
			}

			vertexInstructions.AddRange( m_currentDataCollector.TemplateDataCollectorInstance.GetInterpUnusedChannels() );
			//Fill common local variables and operations

			validBody = m_currentTemplate.FillVertexInstructions( ref shaderBody, vertexInstructions.ToArray() ) && validBody;
			validBody = m_currentTemplate.FillFragmentInstructions( ref shaderBody, fragmentInstructions.ToArray() ) && validBody;

			// Add Instanced Properties
			if( m_containerGraph.IsInstancedShader )
			{
				m_currentDataCollector.TabifyInstancedVars();
				m_currentDataCollector.InstancedPropertiesList.Insert( 0, new PropertyDataCollector( -1, string.Format( IOUtils.InstancedPropertiesBegin, UIUtils.RemoveInvalidCharacters( m_shaderName ) ) ) );
				m_currentDataCollector.InstancedPropertiesList.Add( new PropertyDataCollector( -1, IOUtils.InstancedPropertiesEnd ) );
				m_currentDataCollector.UniformsList.AddRange( m_currentDataCollector.InstancedPropertiesList );
			}

			//Add Functions
			m_currentDataCollector.UniformsList.AddRange( m_currentDataCollector.FunctionsList );

			// Fill common tags
			m_currentDataCollector.IncludesList.AddRange( m_currentDataCollector.PragmasList );

			validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.ShaderNameId, ref shaderBody, string.Format( TemplatesManager.NameFormatter, m_shaderName ) ) && validBody;
			validBody = m_currentTemplate.FillTemplateBody( TemplatesManager.TemplatePassTag, ref shaderBody, m_currentDataCollector.GrabPassList ) && validBody;
			validBody = m_currentTemplate.FillTemplateBody( TemplatesManager.TemplatePragmaTag, ref shaderBody, m_currentDataCollector.IncludesList ) && validBody;
			//validBody = m_currentTemplate.FillTemplateBody( TemplatesManager.TemplateTagsTag, ref shaderBody, m_currentDataCollector.TagsList ) && validBody;
			validBody = m_currentTemplate.FillTemplateBody( TemplatesManager.TemplatePropertyTag, ref shaderBody, m_currentDataCollector.BuildUnformatedPropertiesStringArr() ) && validBody;
			validBody = m_currentTemplate.FillTemplateBody( TemplatesManager.TemplateGlobalsTag, ref shaderBody, m_currentDataCollector.UniformsList ) && validBody;
			validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.VertexDataId, ref shaderBody, m_currentDataCollector.VertexInputList.ToArray() ) && validBody;
			validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.InterpDataId, ref shaderBody, m_currentDataCollector.InterpolatorList.ToArray() ) && validBody;

			if( m_currentTemplate.BlendData.ValidBlendMode )
			{
				validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.BlendData.BlendModeId, ref shaderBody, m_blendOpHelper.CurrentBlendFactor ) && validBody;
			}

			if( m_currentTemplate.BlendData.ValidBlendOp )
			{
				validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.BlendData.BlendOpId, ref shaderBody, m_blendOpHelper.CurrentBlendOp ) && validBody;
			}

			if( m_currentTemplate.AlphaToMaskData.DataCheck == TemplateDataCheck.Valid )
			{
				validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.AlphaToMaskData.AlphaToMaskId, ref shaderBody, m_alphaToMaskHelper.GenerateShaderData( false ) ) && validBody;
			}

			if( m_currentTemplate.DepthData.ValidZWrite )
			{
				validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.DepthData.ZWriteModeId, ref shaderBody, m_depthOphelper.CurrentZWriteMode ) && validBody;
			}

			if( m_currentTemplate.DepthData.ValidZTest )
			{
				validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.DepthData.ZTestModeId, ref shaderBody, m_depthOphelper.CurrentZTestMode ) && validBody;
			}

			if( m_currentTemplate.DepthData.ValidOffset )
			{
				validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.DepthData.OffsetId, ref shaderBody, m_depthOphelper.CurrentOffset ) && validBody;
			}

			if( m_currentTemplate.CullModeData.DataCheck == TemplateDataCheck.Valid )
			{
				validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.CullModeData.CullModeId, ref shaderBody, m_cullModeHelper.GenerateShaderData(false) ) && validBody;
			}

			if( m_currentTemplate.ColorMaskData.DataCheck == TemplateDataCheck.Valid )
			{
				validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.ColorMaskData.ColorMaskId, ref shaderBody, m_colorMaskHelper.GenerateShaderData( false ) ) && validBody;
			}

			if( m_currentTemplate.StencilData.DataCheck == TemplateDataCheck.Valid )
			{
				CullMode cullMode = ( m_currentTemplate.CullModeData.DataCheck == TemplateDataCheck.Valid ) ? m_cullModeHelper.CurrentCullMode : CullMode.Back;
				validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.StencilData.StencilBufferId, ref shaderBody, m_stencilBufferHelper.CreateStencilOp( cullMode ) ) && validBody;
			}

			if( m_currentTemplate.TagData.DataCheck == TemplateDataCheck.Valid )
			{
				validBody = m_currentTemplate.FillTemplateBody( m_currentTemplate.TagData.TagsId, ref shaderBody, m_tagsHelper.GenerateTags() ) && validBody;
			}

			if( m_currentDataCollector.TemplateDataCollectorInstance.HasVertexInputParams )
			{
				validBody = m_currentTemplate.FillTemplateBody( TemplatesManager.TemplateInputsVertParamsTag, ref shaderBody, m_currentDataCollector.TemplateDataCollectorInstance.VertexInputParamsStr ) && validBody;
			}

			if( m_currentDataCollector.TemplateDataCollectorInstance.HasFragmentInputParams )
			{
				validBody = m_currentTemplate.FillTemplateBody( TemplatesManager.TemplateInputsFragParamsTag, ref shaderBody, m_currentDataCollector.TemplateDataCollectorInstance.FragInputParamsStr ) && validBody;
			}

			m_currentTemplate.FillEmptyTags( ref shaderBody );

			//m_currentTemplate.InsertSnippets( ref shaderBody );

			vertexInstructions.Clear();
			vertexInstructions = null;

			fragmentInstructions.Clear();
			fragmentInstructions = null;
			if( validBody )
			{
				UpdateShaderAsset( ref pathname, ref shaderBody, isFullPath );
			}

			return m_currentShader;
		}

		public override void ReadFromString( ref string[] nodeParams )
		{
			base.ReadFromString( ref nodeParams );
			try
			{
				ShaderName = GetCurrentParam( ref nodeParams );
				if( m_shaderName.Length > 0 )
					ShaderName = UIUtils.RemoveShaderInvalidCharacters( ShaderName );

				string templateGUID = GetCurrentParam( ref nodeParams );
				string templateShaderName = string.Empty;
				if( UIUtils.CurrentShaderVersion() > 13601 )
				{
					templateShaderName = GetCurrentParam( ref nodeParams );
				}

				TemplateData template = m_containerGraph.ParentWindow.TemplatesManagerInstance.GetTemplate( templateGUID ) as TemplateData;
				if( template != null )
				{
					SetTemplate( template, false, true );
				}
				else
				{
					template = m_containerGraph.ParentWindow.TemplatesManagerInstance.GetTemplateByName( templateShaderName ) as TemplateData;
					if( template != null )
					{
						SetTemplate( template, false, true );
					}
					else
					{
						m_masterNodeCategory = -1;
					}
				}

				if( UIUtils.CurrentShaderVersion() > 13902 )
				{
					//BLEND MODULE
					if( m_currentTemplate.BlendData.ValidBlendMode )
					{
						m_blendOpHelper.ReadBlendModeFromString( ref m_currentReadParamIdx, ref nodeParams );
					}

					if( m_currentTemplate.BlendData.ValidBlendOp )
					{
						m_blendOpHelper.ReadBlendOpFromString( ref m_currentReadParamIdx, ref nodeParams );
					}

					//CULL MODE
					if( m_currentTemplate.CullModeData.DataCheck == TemplateDataCheck.Valid )
					{
						m_cullModeHelper.ReadFromString( ref m_currentReadParamIdx, ref nodeParams );
					}

					//COLOR MASK
					if( m_currentTemplate.ColorMaskData.DataCheck == TemplateDataCheck.Valid )
					{
						m_colorMaskHelper.ReadFromString( ref m_currentReadParamIdx, ref nodeParams );
					}

					//STENCIL BUFFER
					if( m_currentTemplate.StencilData.DataCheck == TemplateDataCheck.Valid )
					{
						m_stencilBufferHelper.ReadFromString( ref m_currentReadParamIdx, ref nodeParams );
					}
				}

				if( UIUtils.CurrentShaderVersion() > 14202 )
				{
					//DEPTH OPTIONS
					if( m_currentTemplate.DepthData.ValidZWrite )
					{
						m_depthOphelper.ReadZWriteFromString( ref m_currentReadParamIdx, ref nodeParams );
					}

					if( m_currentTemplate.DepthData.ValidZTest )
					{
						m_depthOphelper.ReadZTestFromString( ref m_currentReadParamIdx, ref nodeParams );
					}

					if( m_currentTemplate.DepthData.ValidOffset )
					{
						m_depthOphelper.ReadOffsetFromString( ref m_currentReadParamIdx, ref nodeParams );
					}
				}

				//TAGS
				if( UIUtils.CurrentShaderVersion() > 14301 )
				{
					if( m_currentTemplate.TagData.DataCheck == TemplateDataCheck.Valid )
						m_tagsHelper.ReadFromString( ref m_currentReadParamIdx, ref nodeParams );
				}

				if( UIUtils.CurrentShaderVersion() > 18302 )
					SamplingMacros = Convert.ToBoolean( GetCurrentParam( ref nodeParams ) );
				else
					SamplingMacros = false;
			}
			catch( Exception e )
			{
				Debug.LogException( e, this );
			}
			m_containerGraph.CurrentCanvasMode = NodeAvailability.TemplateShader;
			m_containerGraph.CurrentPrecision = m_currentPrecisionType;
		}

		public override void WriteToString( ref string nodeInfo, ref string connectionsInfo )
		{
			base.WriteToString( ref nodeInfo, ref connectionsInfo );
			IOUtils.AddFieldValueToString( ref nodeInfo, m_shaderName );
			IOUtils.AddFieldValueToString( ref nodeInfo, ( m_currentTemplate != null ) ? m_currentTemplate.GUID : string.Empty );
			IOUtils.AddFieldValueToString( ref nodeInfo, ( m_currentTemplate != null ) ? m_currentTemplate.DefaultShaderName : string.Empty );

			//BLEND MODULE
			if( m_currentTemplate.BlendData.ValidBlendMode )
			{
				m_blendOpHelper.WriteBlendModeToString( ref nodeInfo );
			}

			if( m_currentTemplate.BlendData.ValidBlendOp )
			{
				m_blendOpHelper.WriteBlendOpToString( ref nodeInfo );
			}

			//CULL MODULE
			if( m_currentTemplate.CullModeData.DataCheck == TemplateDataCheck.Valid )
			{
				m_cullModeHelper.WriteToString( ref nodeInfo );
			}

			//COLOR MASK MODULE
			if( m_currentTemplate.ColorMaskData.DataCheck == TemplateDataCheck.Valid )
			{
				m_colorMaskHelper.WriteToString( ref nodeInfo );
			}

			//STENCIL BUFFER MODULE
			if( m_currentTemplate.StencilData.DataCheck == TemplateDataCheck.Valid )
			{
				m_stencilBufferHelper.WriteToString( ref nodeInfo );
			}

			//DEPTH MODULE
			if( m_currentTemplate.DepthData.ValidZWrite )
			{
				m_depthOphelper.WriteZWriteToString( ref nodeInfo );
			}

			if( m_currentTemplate.DepthData.ValidZTest )
			{
				m_depthOphelper.WriteZTestToString( ref nodeInfo );
			}

			if( m_currentTemplate.DepthData.ValidOffset )
			{
				m_depthOphelper.WriteOffsetToString( ref nodeInfo );
			}

			//TAGS
			if( m_currentTemplate.TagData.DataCheck == TemplateDataCheck.Valid )
			{
				m_tagsHelper.WriteToString( ref nodeInfo );
			}

			IOUtils.AddFieldValueToString( ref nodeInfo, m_samplingMacros );
		}

		public override void Destroy()
		{
			base.Destroy();
			m_currentTemplate = null;
			m_blendOpHelper = null;
			m_alphaToMaskHelper = null;
			m_cullModeHelper = null;
			m_colorMaskHelper.Destroy();
			m_colorMaskHelper = null;
			m_stencilBufferHelper.Destroy();
			m_stencilBufferHelper = null;
			m_tagsHelper.Destroy();
			m_tagsHelper = null;

		}

		public TemplateData CurrentTemplate { get { return m_currentTemplate; } }
	}
}