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// Amplify Shader Editor - Visual Shader Editing Tool
// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
using System;
namespace AmplifyShaderEditor
{
[Serializable]
[NodeAttributes( "Luminance", "Image Effects", "Calculates Luminance value from input")]
public sealed class LuminanceNode : ParentNode
{
protected override void CommonInit( int uniqueId )
{
base.CommonInit( uniqueId );
AddInputPort( WirePortDataType.FLOAT3, false, "RGB" );
AddOutputPort( WirePortDataType.FLOAT, Constants.EmptyPortValue );
m_previewShaderGUID = "81e1d8ffeec8a4b4cabb1094bc981048";
}
public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalvar )
{
if( m_outputPorts[ 0 ].IsLocalValue( dataCollector.PortCategory ) )
return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
string value = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
string grayscale = "Luminance(" + value + ")";
RegisterLocalVariable( 0, grayscale, ref dataCollector, "luminance" + OutputId );
return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
}
}
}
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