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55 lines
2.2 KiB
55 lines
2.2 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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namespace AmplifyShaderEditor
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{
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[Serializable]
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[NodeAttributes( "Simple Contrast", "Image Effects", "Simple contrast matrix multiplication" )]
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public sealed class SimpleContrastOpNode : ParentNode
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{
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private const string InputTypeStr = "Contrast";
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private const string FunctionHeader = "CalculateContrast({0},{1})";
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private readonly string[] m_functionBody = { "float4 CalculateContrast( float contrastValue, float4 colorTarget )\n",
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"{\n",
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"\tfloat t = 0.5 * ( 1.0 - contrastValue );\n",
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"\treturn mul( float4x4( contrastValue,0,0,t, 0,contrastValue,0,t, 0,0,contrastValue,t, 0,0,0,1 ), colorTarget );\n",
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"}"};
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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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AddPorts();
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m_textLabelWidth = 70;
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m_useInternalPortData = true;
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m_previewShaderGUID = "8d76799413f9f0547ac9b1de7ba798f1";
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}
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void AddPorts()
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{
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AddInputPort( WirePortDataType.COLOR, false, "RGBA", -1, MasterNodePortCategory.Fragment, 1 );
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AddInputPort( WirePortDataType.FLOAT, false, "Value", -1, MasterNodePortCategory.Fragment, 0 );
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AddOutputPort( WirePortDataType.COLOR, Constants.EmptyPortValue );
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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 contrastValue = m_inputPorts[ 1 ].GeneratePortInstructions( ref dataCollector );
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string colorTarget = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
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string result = dataCollector.AddFunctions( FunctionHeader, m_functionBody, false, contrastValue, colorTarget );
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return CreateOutputLocalVariable( 0, result, 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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if( UIUtils.CurrentShaderVersion() < 5004 )
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{
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m_inputPorts[ 1 ].FloatInternalData = Convert.ToSingle( GetCurrentParam( ref nodeParams ) );
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}
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}
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}
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}
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