1 files changed, 87 insertions, 0 deletions
diff --git a/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/ImageEffects/HSVToRGBNode.cs b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/ImageEffects/HSVToRGBNode.cs
new file mode 100644
index 00000000..a30c69aa
--- /dev/null
+++ b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/Editor/Nodes/ImageEffects/HSVToRGBNode.cs
@@ -0,0 +1,87 @@
+using System;
+
+namespace AmplifyShaderEditor
+{
+	[Serializable]
+	[NodeAttributes( "HSV to RGB", "Image Effects", "Converts from HSV to RGB color space" )]
+	public sealed class HSVToRGBNode : ParentNode
+	{
+		public static readonly string HSVToRGBHeader = "HSVToRGB( {0}3({1},{2},{3}) )";
+		public static readonly string[] HSVToRGBFunction = {	"{0}3 HSVToRGB( {0}3 c )\n",
+																"{\n",
+																"\t{0}4 K = {0}4( 1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0 );\n",
+																"\t{0}3 p = abs( frac( c.xxx + K.xyz ) * 6.0 - K.www );\n",
+																"\treturn c.z * lerp( K.xxx, saturate( p - K.xxx ), c.y );\n",
+																"}\n"};
+		public static readonly bool[] HSVToRGBFlags = {	true,
+														false,
+														true,
+														true,
+														false,
+														false};
+
+		protected override void CommonInit( int uniqueId )
+		{
+			base.CommonInit( uniqueId );
+			AddInputPort( WirePortDataType.FLOAT, false, "Hue" );
+			AddInputPort( WirePortDataType.FLOAT, false, "Saturation" );
+			AddInputPort( WirePortDataType.FLOAT, false, "Value" );
+			AddOutputColorPorts( "RGB", false );
+			m_previewShaderGUID = "fab445eb945d63047822a7a6b81b959d";
+			m_useInternalPortData = true;
+			m_autoWrapProperties = true;
+			m_customPrecision = true;
+		}
+
+		public override void DrawProperties()
+		{
+			base.DrawProperties();
+			DrawPrecisionProperty();
+		}
+
+		public static void AddHSVToRGBFunction( ref MasterNodeDataCollector dataCollector , string precisionString )
+		{
+			if( !dataCollector.HasFunction( HSVToRGBHeader ) )
+			{
+				//Hack to be used util indent is properly used
+				int currIndent = UIUtils.ShaderIndentLevel;
+				if( dataCollector.MasterNodeCategory == AvailableShaderTypes.Template )
+				{
+					UIUtils.ShaderIndentLevel = 0;
+				}
+				else
+				{
+					UIUtils.ShaderIndentLevel = 1;
+					UIUtils.ShaderIndentLevel++;
+				}
+
+				string finalFunction = string.Empty;
+				for( int i = 0; i < HSVToRGBFunction.Length; i++ )
+				{
+					finalFunction += UIUtils.ShaderIndentTabs + ( HSVToRGBFlags[ i ] ? string.Format( HSVToRGBFunction[ i ], precisionString ) : HSVToRGBFunction[ i ] );
+				}
+
+				UIUtils.ShaderIndentLevel = currIndent;
+
+				dataCollector.AddFunction( HSVToRGBHeader, finalFunction );
+			}
+		}
+
+		public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalvar )
+		{
+			if ( m_outputPorts[ 0 ].IsLocalValue( dataCollector.PortCategory ) )
+				return GetOutputVectorItem( 0, outputId, m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory ) );
+
+			string precisionString = UIUtils.PrecisionWirePortToCgType( CurrentPrecisionType, WirePortDataType.FLOAT );
+
+			AddHSVToRGBFunction( ref dataCollector , precisionString );
+
+			string hue = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
+			string saturation = m_inputPorts[ 1 ].GeneratePortInstructions( ref dataCollector );
+			string value = m_inputPorts[ 2 ].GeneratePortInstructions( ref dataCollector );
+			
+			RegisterLocalVariable( 0, string.Format( HSVToRGBHeader, precisionString, hue, saturation, value ), ref dataCollector, "hsvTorgb" + OutputId );
+			return GetOutputVectorItem( 0, outputId, m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory ) );
+		}
+	}
+}