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86 lines
3.2 KiB
86 lines
3.2 KiB
using System;
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namespace AmplifyShaderEditor
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{
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[Serializable]
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[NodeAttributes( "HSV to RGB", "Image Effects", "Converts from HSV to RGB color space" )]
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public sealed class HSVToRGBNode : ParentNode
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{
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public static readonly string HSVToRGBHeader = "HSVToRGB( {0}3({1},{2},{3}) )";
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public static readonly string[] HSVToRGBFunction = { "{0}3 HSVToRGB( {0}3 c )\n",
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"{\n",
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"\t{0}4 K = {0}4( 1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0 );\n",
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"\t{0}3 p = abs( frac( c.xxx + K.xyz ) * 6.0 - K.www );\n",
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"\treturn c.z * lerp( K.xxx, saturate( p - K.xxx ), c.y );\n",
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"}\n"};
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public static readonly bool[] HSVToRGBFlags = { true,
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false,
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true,
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true,
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false,
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false};
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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.FLOAT, false, "Hue" );
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AddInputPort( WirePortDataType.FLOAT, false, "Saturation" );
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AddInputPort( WirePortDataType.FLOAT, false, "Value" );
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AddOutputColorPorts( "RGB", false );
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m_previewShaderGUID = "fab445eb945d63047822a7a6b81b959d";
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m_useInternalPortData = true;
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m_autoWrapProperties = true;
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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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DrawPrecisionProperty();
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}
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public static void AddHSVToRGBFunction( ref MasterNodeDataCollector dataCollector , string precisionString )
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{
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if( !dataCollector.HasFunction( HSVToRGBHeader ) )
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{
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//Hack to be used util indent is properly used
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int currIndent = UIUtils.ShaderIndentLevel;
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if( dataCollector.MasterNodeCategory == AvailableShaderTypes.Template )
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{
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UIUtils.ShaderIndentLevel = 0;
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}
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else
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{
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UIUtils.ShaderIndentLevel = 1;
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UIUtils.ShaderIndentLevel++;
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}
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string finalFunction = string.Empty;
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for( int i = 0; i < HSVToRGBFunction.Length; i++ )
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{
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finalFunction += UIUtils.ShaderIndentTabs + ( HSVToRGBFlags[ i ] ? string.Format( HSVToRGBFunction[ i ], precisionString ) : HSVToRGBFunction[ i ] );
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}
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UIUtils.ShaderIndentLevel = currIndent;
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dataCollector.AddFunction( HSVToRGBHeader, finalFunction );
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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 GetOutputVectorItem( 0, outputId, m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory ) );
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string precisionString = UIUtils.FinalPrecisionWirePortToCgType( m_currentPrecisionType, WirePortDataType.FLOAT );
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AddHSVToRGBFunction( ref dataCollector , precisionString );
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string hue = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
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string saturation = m_inputPorts[ 1 ].GeneratePortInstructions( ref dataCollector );
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string value = m_inputPorts[ 2 ].GeneratePortInstructions( ref dataCollector );
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RegisterLocalVariable( 0, string.Format( HSVToRGBHeader, precisionString, hue, saturation, value ), ref dataCollector, "hsvTorgb" + OutputId );
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return GetOutputVectorItem( 0, outputId, m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory ) );
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}
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}
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}
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