// Amplify Shader Editor - Visual Shader Editing Tool
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// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
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//
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// Custom Node Swizzle
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// Donated by Tobias Pott - @ Tobias Pott
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// www.tobiaspott.de
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using System;
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using UnityEditor;
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using UnityEngine;
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namespace AmplifyShaderEditor
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{
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[Serializable]
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[NodeAttributes( "Swizzle", "Vector Operators", "Swizzle components of vector types", null, KeyCode.Z, true, false, null, null, "Tobias Pott - @TobiasPott" )]
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public sealed class SwizzleNode : SingleInputOp
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{
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private const string OutputTypeStr = "Output type";
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[SerializeField]
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private WirePortDataType m_selectedOutputType = WirePortDataType.FLOAT4;
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[SerializeField]
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private int m_selectedOutputTypeInt = 3;
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[SerializeField]
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private int[] m_selectedOutputSwizzleTypes = new int[] { 0, 1, 2, 3 };
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[SerializeField]
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private int m_maskId;
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[SerializeField]
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private Vector4 m_maskValue = Vector4.one;
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private readonly string[] SwizzleVectorChannels = { "x", "y", "z", "w" };
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private readonly string[] SwizzleColorChannels = { "r", "g", "b", "a" };
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private readonly string[] SwizzleChannelLabels = { "Channel 0", "Channel 1", "Channel 2", "Channel 3" };
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private readonly string[] m_outputValueTypes ={ "Float",
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"Vector 2",
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"Vector 3",
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"Vector 4"};
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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_inputPorts[ 0 ].CreatePortRestrictions( WirePortDataType.FLOAT,
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WirePortDataType.FLOAT2,
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WirePortDataType.FLOAT3,
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WirePortDataType.FLOAT4,
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WirePortDataType.COLOR,
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WirePortDataType.INT );
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m_inputPorts[ 0 ].DataType = WirePortDataType.FLOAT4;
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m_outputPorts[ 0 ].DataType = m_selectedOutputType;
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m_textLabelWidth = 90;
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m_autoWrapProperties = true;
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m_autoUpdateOutputPort = false;
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m_hasLeftDropdown = true;
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m_previewShaderGUID = "d20531704ce28b14bafb296f291f6608";
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SetAdditonalTitleText( "Value( XYZW )" );
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CalculatePreviewData();
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}
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public override void OnEnable()
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{
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base.OnEnable();
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m_maskId = Shader.PropertyToID( "_Mask" );
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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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PreviewMaterial.SetVector( m_maskId, m_maskValue );
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}
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void CalculatePreviewData()
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{
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switch( m_outputPorts[ 0 ].DataType )
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{
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default: m_maskValue = Vector4.zero; break;
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case WirePortDataType.INT:
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case WirePortDataType.FLOAT: m_maskValue = new Vector4( 1, 0, 0, 0 ); break;
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case WirePortDataType.FLOAT2: m_maskValue = new Vector4( 1, 1, 0, 0 ); break;
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case WirePortDataType.FLOAT3: m_maskValue = new Vector4( 1, 1, 1, 0 ); break;
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case WirePortDataType.FLOAT4:
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case WirePortDataType.COLOR: m_maskValue = Vector4.one; break;
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}
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m_previewMaterialPassId = -1;
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float passValue = 0;
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for( int i = 3; i > -1; i-- )
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{
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if( m_selectedOutputSwizzleTypes[ i ] > 0 )
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{
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passValue += Mathf.Pow( 4, 3 - i ) * m_selectedOutputSwizzleTypes[ i ];
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}
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}
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m_previewMaterialPassId = (int)passValue;
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if( m_previewMaterialPassId == -1 )
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{
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m_previewMaterialPassId = 0;
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if( DebugConsoleWindow.DeveloperMode )
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{
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UIUtils.ShowMessage( "Could not find pass ID for swizzle", MessageSeverity.Error );
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}
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}
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}
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public override void AfterCommonInit()
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{
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base.AfterCommonInit();
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if ( PaddingTitleLeft == 0 )
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{
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PaddingTitleLeft = Constants.PropertyPickerWidth + Constants.IconsLeftRightMargin;
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if ( PaddingTitleRight == 0 )
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PaddingTitleRight = Constants.PropertyPickerWidth + Constants.IconsLeftRightMargin;
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}
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}
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public override void OnConnectedOutputNodeChanges( int outputPortId, int otherNodeId, int otherPortId, string name, WirePortDataType type )
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{
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base.OnConnectedOutputNodeChanges( outputPortId, otherNodeId, otherPortId, name, type );
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UpdatePorts();
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}
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public override void OnInputPortConnected( int portId, int otherNodeId, int otherPortId, bool activateNode = true )
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{
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base.OnInputPortConnected( portId, otherNodeId, otherPortId, activateNode );
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UpdatePorts();
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}
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public override void OnInputPortDisconnected( int portId )
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{
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base.OnInputPortDisconnected( portId );
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UpdatePorts();
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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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if ( m_dropdownEditing )
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{
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EditorGUI.BeginChangeCheck();
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m_selectedOutputTypeInt = EditorGUIPopup( m_dropdownRect, m_selectedOutputTypeInt, m_outputValueTypes, UIUtils.PropertyPopUp );
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if ( EditorGUI.EndChangeCheck() )
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{
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switch ( m_selectedOutputTypeInt )
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{
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case 0: m_selectedOutputType = WirePortDataType.FLOAT; break;
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case 1: m_selectedOutputType = WirePortDataType.FLOAT2; break;
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case 2: m_selectedOutputType = WirePortDataType.FLOAT3; break;
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case 3: m_selectedOutputType = WirePortDataType.FLOAT4; break;
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}
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UpdatePorts();
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m_dropdownEditing = false;
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}
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}
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}
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public override void DrawProperties()
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{
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EditorGUILayout.BeginVertical();
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EditorGUI.BeginChangeCheck();
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m_selectedOutputTypeInt = EditorGUILayoutPopup( OutputTypeStr, m_selectedOutputTypeInt, m_outputValueTypes );
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if ( EditorGUI.EndChangeCheck() )
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{
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switch ( m_selectedOutputTypeInt )
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{
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case 0: m_selectedOutputType = WirePortDataType.FLOAT; break;
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case 1: m_selectedOutputType = WirePortDataType.FLOAT2; break;
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case 2: m_selectedOutputType = WirePortDataType.FLOAT3; break;
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case 3: m_selectedOutputType = WirePortDataType.FLOAT4; break;
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}
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UpdatePorts();
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}
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EditorGUILayout.EndVertical();
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// Draw base properties
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base.DrawProperties();
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EditorGUILayout.BeginVertical();
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int count = 0;
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switch ( m_selectedOutputType )
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{
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case WirePortDataType.FLOAT4:
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case WirePortDataType.COLOR:
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count = 4;
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break;
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case WirePortDataType.FLOAT3:
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count = 3;
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break;
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case WirePortDataType.FLOAT2:
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count = 2;
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break;
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case WirePortDataType.INT:
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case WirePortDataType.FLOAT:
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count = 1;
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break;
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case WirePortDataType.OBJECT:
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case WirePortDataType.FLOAT3x3:
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case WirePortDataType.FLOAT4x4:
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break;
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}
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EditorGUI.BeginChangeCheck();
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if ( m_inputPorts[ 0 ].DataType == WirePortDataType.COLOR )
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{
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for ( int i = 0; i < count; i++ )
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{
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m_selectedOutputSwizzleTypes[ i ] = EditorGUILayoutPopup( SwizzleChannelLabels[ i ], m_selectedOutputSwizzleTypes[ i ], SwizzleColorChannels );
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}
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}
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else
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{
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for ( int i = 0; i < count; i++ )
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{
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m_selectedOutputSwizzleTypes[ i ] = EditorGUILayoutPopup( SwizzleChannelLabels[ i ], m_selectedOutputSwizzleTypes[ i ], SwizzleVectorChannels );
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}
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}
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if ( EditorGUI.EndChangeCheck() )
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{
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UpdatePorts();
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}
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EditorGUILayout.EndVertical();
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}
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void UpdatePorts()
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{
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ChangeOutputType( m_selectedOutputType, false );
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int count = 0;
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switch ( m_selectedOutputType )
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{
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case WirePortDataType.FLOAT4:
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case WirePortDataType.COLOR:
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count = 4;
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break;
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case WirePortDataType.FLOAT3:
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count = 3;
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break;
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case WirePortDataType.FLOAT2:
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count = 2;
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break;
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case WirePortDataType.INT:
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case WirePortDataType.FLOAT:
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count = 1;
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break;
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case WirePortDataType.OBJECT:
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case WirePortDataType.FLOAT3x3:
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case WirePortDataType.FLOAT4x4:
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break;
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}
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int inputMaxChannelId = 0;
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switch ( m_inputPorts[ 0 ].DataType )
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{
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case WirePortDataType.FLOAT4:
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case WirePortDataType.COLOR:
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inputMaxChannelId = 3;
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break;
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case WirePortDataType.FLOAT3:
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inputMaxChannelId = 2;
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break;
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case WirePortDataType.FLOAT2:
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inputMaxChannelId = 1;
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break;
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case WirePortDataType.INT:
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case WirePortDataType.FLOAT:
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inputMaxChannelId = 0;
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break;
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case WirePortDataType.OBJECT:
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case WirePortDataType.FLOAT3x3:
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case WirePortDataType.FLOAT4x4:
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break;
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}
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for ( int i = 0; i < count; i++ )
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{
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m_selectedOutputSwizzleTypes[ i ] = Mathf.Clamp( m_selectedOutputSwizzleTypes[ i ], 0, inputMaxChannelId );
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}
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// Update Title
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string additionalText = string.Empty;
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for ( int i = 0; i < count; i++ )
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{
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additionalText += GetSwizzleComponentForChannel( m_selectedOutputSwizzleTypes[ i ] ).ToUpper();
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}
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if ( additionalText.Length > 0 )
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SetAdditonalTitleText( "Value( " + additionalText + " )" );
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else
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SetAdditonalTitleText( string.Empty );
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CalculatePreviewData();
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m_sizeIsDirty = true;
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}
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public string GetSwizzleComponentForChannel( int channel )
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{
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if ( m_inputPorts[ 0 ].DataType == WirePortDataType.COLOR )
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{
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return SwizzleColorChannels[ channel ];
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}
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else
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{
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return SwizzleVectorChannels[ channel ];
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}
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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 ( m_outputPorts[ 0 ].IsLocalValue( dataCollector.PortCategory ) )
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return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
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string value = string.Format( "({0}).", m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector ) );
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int count = 0;
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switch ( m_selectedOutputType )
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{
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case WirePortDataType.FLOAT4:
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case WirePortDataType.COLOR:
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count = 4;
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break;
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case WirePortDataType.FLOAT3:
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count = 3;
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break;
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case WirePortDataType.FLOAT2:
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count = 2;
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break;
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case WirePortDataType.INT:
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case WirePortDataType.FLOAT:
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count = 1;
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break;
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case WirePortDataType.OBJECT:
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case WirePortDataType.FLOAT3x3:
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case WirePortDataType.FLOAT4x4:
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break;
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}
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for ( int i = 0; i < count; i++ )
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{
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value += GetSwizzleComponentForChannel( m_selectedOutputSwizzleTypes[ i ] );
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}
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return CreateOutputLocalVariable( 0, value, ref dataCollector );
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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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m_selectedOutputType = ( WirePortDataType ) Enum.Parse( typeof( WirePortDataType ), GetCurrentParam( ref nodeParams ) );
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switch ( m_selectedOutputType )
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{
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case WirePortDataType.FLOAT: m_selectedOutputTypeInt = 0; break;
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case WirePortDataType.FLOAT2: m_selectedOutputTypeInt = 1; break;
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case WirePortDataType.FLOAT3: m_selectedOutputTypeInt = 2; break;
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case WirePortDataType.COLOR:
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case WirePortDataType.FLOAT4: m_selectedOutputTypeInt = 3; break;
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}
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for ( int i = 0; i < m_selectedOutputSwizzleTypes.Length; i++ )
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{
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m_selectedOutputSwizzleTypes[ i ] = Convert.ToInt32( GetCurrentParam( ref nodeParams ) );
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}
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UpdatePorts();
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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_selectedOutputType );
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for ( int i = 0; i < m_selectedOutputSwizzleTypes.Length; i++ )
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{
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IOUtils.AddFieldValueToString( ref nodeInfo, m_selectedOutputSwizzleTypes[ i ] );
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}
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}
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}
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}
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