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116 lines
3.9 KiB
116 lines
3.9 KiB
// 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 Grayscale
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// Donated by The Four Headed Cat - @fourheadedcat
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using UnityEngine;
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using UnityEditor;
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using System;
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namespace AmplifyShaderEditor
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{
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[Serializable]
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[NodeAttributes( "Grayscale", "Image Effects", "Convert image colors to grayscale", null, KeyCode.None, true, false, null, null, "The Four Headed Cat - @fourheadedcat" )]
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public sealed class TFHCGrayscale : ParentNode
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{
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private const string GrayscaleStyleStr = "Grayscale Style";
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[SerializeField]
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private int m_grayscaleStyle;
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[SerializeField]
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private readonly string[] m_GrayscaleStyleValues = { "Luminance", "Natural Classic", "Old School" };
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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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AddInputPort( WirePortDataType.FLOAT3, false, "RGB" );
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AddOutputPort( WirePortDataType.FLOAT, Constants.EmptyPortValue );
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m_textLabelWidth = 120;
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m_useInternalPortData = true;
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m_hasLeftDropdown = true;
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m_autoWrapProperties = true;
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SetAdditonalTitleText( string.Format( Constants.SubTitleTypeFormatStr, m_GrayscaleStyleValues[ m_grayscaleStyle ] ) );
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m_previewShaderGUID = "56781cd022be9124597f0f396a46a35f";
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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 Destroy()
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{
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base.Destroy();
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m_upperLeftWidget = null;
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}
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void UpdateFromSelected()
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{
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m_previewMaterialPassId = m_grayscaleStyle;
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SetAdditonalTitleText( string.Format( Constants.SubTitleTypeFormatStr, m_GrayscaleStyleValues[ m_grayscaleStyle ] ) );
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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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EditorGUI.BeginChangeCheck();
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m_grayscaleStyle = m_upperLeftWidget.DrawWidget( this, m_grayscaleStyle, m_GrayscaleStyleValues );
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if( EditorGUI.EndChangeCheck() )
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{
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UpdateFromSelected();
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}
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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_grayscaleStyle = EditorGUILayoutPopup( GrayscaleStyleStr, m_grayscaleStyle, m_GrayscaleStyleValues );
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if( EditorGUI.EndChangeCheck() )
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{
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UpdateFromSelected();
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}
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EditorGUILayout.HelpBox( "Grayscale Old:\n\n - In: Image to convert.\n - Grayscale Style: Select the grayscale style.\n\n - Out: Grayscale version of the image.", MessageType.None );
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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_grayscaleStyle = Convert.ToInt32( GetCurrentParam( ref nodeParams ) );
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UpdateFromSelected();
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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_grayscaleStyle );
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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 i = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
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string grayscale = string.Empty;
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switch( m_grayscaleStyle )
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{
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case 1: { grayscale = "dot(" + i + ", float3(0.299,0.587,0.114))"; } break;
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case 2: { grayscale = "(" + i + ".r + " + i + ".g + " + i + ".b) / 3"; } break;
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default: { grayscale = "Luminance(" + i + ")"; } break;
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}
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RegisterLocalVariable( 0, grayscale, ref dataCollector, "grayscale" + OutputId );
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return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
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}
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}
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}
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