You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
3.3 KiB
92 lines
3.3 KiB
using System;
|
|
|
|
namespace AmplifyShaderEditor
|
|
{
|
|
[Serializable]
|
|
[NodeAttributes( "RGB to HSV", "Image Effects", "Converts from RGB to HSV color space" )]
|
|
public sealed class RGBToHSVNode : ParentNode
|
|
{
|
|
public static readonly string RGBToHSVHeader = "RGBToHSV( {0} )";
|
|
public static readonly string[] RGBToHSVFunction = { "{0}3 RGBToHSV({0}3 c)\n",
|
|
"{\n",
|
|
"\t{0}4 K = {0}4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);\n",
|
|
"\t{0}4 p = lerp( {0}4( c.bg, K.wz ), {0}4( c.gb, K.xy ), step( c.b, c.g ) );\n",
|
|
"\t{0}4 q = lerp( {0}4( p.xyw, c.r ), {0}4( c.r, p.yzx ), step( p.x, c.r ) );\n",
|
|
"\t{0} d = q.x - min( q.w, q.y );\n",
|
|
"\t{0} e = 1.0e-10;\n",
|
|
"\treturn {0}3( abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);\n",
|
|
"}"
|
|
};
|
|
|
|
public static readonly bool[] RGBToHSVFlags = { true,
|
|
false,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
true,
|
|
false};
|
|
|
|
protected override void CommonInit( int uniqueId )
|
|
{
|
|
base.CommonInit( uniqueId );
|
|
AddInputPort( WirePortDataType.FLOAT3, false, "RGB" );
|
|
AddOutputPort( WirePortDataType.FLOAT3, "HSV" );
|
|
AddOutputPort( WirePortDataType.FLOAT, "Hue" );
|
|
AddOutputPort( WirePortDataType.FLOAT, "Saturation" );
|
|
AddOutputPort( WirePortDataType.FLOAT, "Value" );
|
|
m_previewShaderGUID = "0f2f09b49bf4954428aafa2dfe1a9a09";
|
|
m_useInternalPortData = true;
|
|
m_autoWrapProperties = true;
|
|
}
|
|
|
|
public override void DrawProperties()
|
|
{
|
|
base.DrawProperties();
|
|
DrawPrecisionProperty();
|
|
}
|
|
|
|
public void AddRGBToHSVFunction( ref MasterNodeDataCollector dataCollector, string precisionString )
|
|
{
|
|
if( !dataCollector.HasFunction( RGBToHSVHeader ) )
|
|
{
|
|
//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 < RGBToHSVFunction.Length; i++ )
|
|
{
|
|
finalFunction += UIUtils.ShaderIndentTabs + ( RGBToHSVFlags[ i ] ? string.Format( RGBToHSVFunction[ i ], precisionString ) : RGBToHSVFunction[ i ] );
|
|
}
|
|
UIUtils.ShaderIndentLevel--;
|
|
UIUtils.ShaderIndentLevel = currIndent;
|
|
|
|
dataCollector.AddFunction( RGBToHSVHeader, 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( m_currentPrecisionType, WirePortDataType.FLOAT );
|
|
AddRGBToHSVFunction( ref dataCollector, precisionString );
|
|
|
|
string rgbValue = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
|
|
|
|
RegisterLocalVariable( 0, string.Format( RGBToHSVHeader, rgbValue ), ref dataCollector, "hsvTorgb" + OutputId );
|
|
return GetOutputVectorItem( 0, outputId, m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory ) );
|
|
}
|
|
}
|
|
}
|