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167 lines
5.6 KiB
167 lines
5.6 KiB
// Amplify Shader Editor - Visual Shader Editing Tool
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// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
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using System;
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using UnityEngine;
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using UnityEditor;
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namespace AmplifyShaderEditor
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{
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public enum ViewSpace
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{
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Tangent,
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World
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}
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[Serializable]
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[NodeAttributes( "View Dir", "Camera And Screen", "View direction vector, you can select between <b>World</b> space or <b>Tangent</b> space" )]
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public sealed class ViewDirInputsCoordNode : SurfaceShaderINParentNode
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{
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private const string SpaceStr = "Space";
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private const string WorldDirVarStr = "worldViewDir";
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private const string NormalizeOptionStr = "Safe Normalize";
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[SerializeField]
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private bool m_safeNormalize = false;
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[SerializeField]
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private ViewSpace m_viewDirSpace = ViewSpace.World;
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private UpperLeftWidgetHelper m_upperLeftWidget = new UpperLeftWidgetHelper();
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protected override void CommonInit( int uniqueId )
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{
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base.CommonInit( uniqueId );
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m_currentInput = SurfaceInputs.VIEW_DIR;
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InitialSetup();
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m_textLabelWidth = 120;
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m_autoWrapProperties = true;
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m_drawPreviewAsSphere = true;
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m_hasLeftDropdown = true;
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UpdateTitle();
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m_previewShaderGUID = "07b57d9823df4bd4d8fe6dcb29fca36a";
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}
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private void UpdateTitle()
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{
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m_additionalContent.text = string.Format( Constants.SubTitleSpaceFormatStr, m_viewDirSpace.ToString() );
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m_sizeIsDirty = true;
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}
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public override void Draw( DrawInfo drawInfo )
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{
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base.Draw( drawInfo );
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m_upperLeftWidget.DrawWidget<ViewSpace>( ref m_viewDirSpace, this, OnWidgetUpdate );
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}
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private readonly Action<ParentNode> OnWidgetUpdate = ( x ) =>
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{
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( x as ViewDirInputsCoordNode ).UpdateTitle();
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};
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public override void DrawProperties()
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{
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//base.DrawProperties();
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EditorGUI.BeginChangeCheck();
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m_viewDirSpace = (ViewSpace)EditorGUILayoutEnumPopup( SpaceStr, m_viewDirSpace );
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if( EditorGUI.EndChangeCheck() )
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{
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UpdateTitle();
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}
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m_safeNormalize = EditorGUILayoutToggle( NormalizeOptionStr, m_safeNormalize );
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EditorGUILayout.HelpBox( "Having safe normalize ON makes sure your view vector is not zero even if you are using your shader with no cameras.", MessageType.None );
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}
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public override void SetPreviewInputs()
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{
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base.SetPreviewInputs();
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if( m_viewDirSpace == ViewSpace.World )
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m_previewMaterialPassId = 0;
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else if( m_viewDirSpace == ViewSpace.Tangent )
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m_previewMaterialPassId = 1;
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}
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public override void PropagateNodeData( NodeData nodeData, ref MasterNodeDataCollector dataCollector )
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{
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base.PropagateNodeData( nodeData, ref dataCollector );
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if( m_viewDirSpace == ViewSpace.Tangent )
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dataCollector.DirtyNormal = true;
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if( m_safeNormalize )
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dataCollector.SafeNormalizeViewDir = true;
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}
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public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalVar )
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{
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if( dataCollector.IsTemplate )
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{
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string varName = ( m_viewDirSpace == ViewSpace.World ) ? dataCollector.TemplateDataCollectorInstance.GetViewDir(true,MasterNodePortCategory.Fragment, m_safeNormalize?NormalizeType.Safe:NormalizeType.Regular) :
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dataCollector.TemplateDataCollectorInstance.GetTangentViewDir( m_currentPrecisionType ,true,MasterNodePortCategory.Fragment, m_safeNormalize ? NormalizeType.Safe : NormalizeType.Regular );
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return GetOutputVectorItem( 0, outputId, varName );
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}
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if( dataCollector.PortCategory == MasterNodePortCategory.Vertex || dataCollector.PortCategory == MasterNodePortCategory.Tessellation )
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{
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string result = GeneratorUtils.GenerateViewDirection( ref dataCollector, UniqueId, m_viewDirSpace );
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return GetOutputVectorItem( 0, outputId, result );
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}
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else
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{
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if( m_viewDirSpace == ViewSpace.World )
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{
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if( dataCollector.DirtyNormal || m_safeNormalize )
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{
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dataCollector.AddToInput( UniqueId, SurfaceInputs.WORLD_POS );
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string result = GeneratorUtils.GenerateViewDirection( ref dataCollector, UniqueId );
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return GetOutputVectorItem( 0, outputId, result );
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}
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else
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{
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dataCollector.AddToInput( UniqueId, SurfaceInputs.VIEW_DIR, PrecisionType.Float );
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return GetOutputVectorItem( 0, outputId, m_currentInputValueStr );
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//return base.GenerateShaderForOutput( outputId, ref dataCollector, ignoreLocalVar );
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}
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}
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else
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{
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if( m_safeNormalize )
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{
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dataCollector.AddToInput( UniqueId, SurfaceInputs.WORLD_NORMAL, m_currentPrecisionType );
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dataCollector.AddToInput( UniqueId, SurfaceInputs.INTERNALDATA, addSemiColon: false );
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dataCollector.ForceNormal = true;
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dataCollector.AddToInput( UniqueId, SurfaceInputs.WORLD_POS );
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string result = GeneratorUtils.GenerateViewDirection( ref dataCollector, UniqueId, ViewSpace.Tangent );
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return GetOutputVectorItem( 0, outputId, result );
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}
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else
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{
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dataCollector.ForceNormal = true;
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return base.GenerateShaderForOutput( outputId, ref dataCollector, ignoreLocalVar );
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}
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}
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}
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}
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public override void ReadFromString( ref string[] nodeParams )
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{
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base.ReadFromString( ref nodeParams );
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if( UIUtils.CurrentShaderVersion() > 2402 )
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m_viewDirSpace = (ViewSpace)Enum.Parse( typeof( ViewSpace ), GetCurrentParam( ref nodeParams ) );
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if( UIUtils.CurrentShaderVersion() > 15201 )
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{
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m_safeNormalize = Convert.ToBoolean( GetCurrentParam( ref nodeParams ) );
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}
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UpdateTitle();
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}
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public override void WriteToString( ref string nodeInfo, ref string connectionsInfo )
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{
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base.WriteToString( ref nodeInfo, ref connectionsInfo );
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IOUtils.AddFieldValueToString( ref nodeInfo, m_viewDirSpace );
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IOUtils.AddFieldValueToString( ref nodeInfo, m_safeNormalize );
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}
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}
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}
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