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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( "Diffuse And Specular From Metallic", "Miscellaneous", "Gets Diffuse and Specular values from Metallic. Uses DiffuseAndSpecularFromMetallic function from UnityStandardUtils." )]
public class DiffuseAndSpecularFromMetallicNode : ParentNode
{
//half3 DiffuseAndSpecularFromMetallic (half3 albedo, half metallic, out half3 specColor, out half oneMinusReflectivity)
private const string FuncFormat = "DiffuseAndSpecularFromMetallic({0},{1},{2},{3})";
protected override void CommonInit( int uniqueId )
{
base.CommonInit( uniqueId );
AddInputPort( WirePortDataType.FLOAT3, false, "Albedo" );
AddInputPort( WirePortDataType.FLOAT, false, "Metallic" );
AddOutputPort( WirePortDataType.FLOAT3, "Out" );
AddOutputPort( WirePortDataType.FLOAT3, "Spec Color" );
AddOutputPort( WirePortDataType.FLOAT, "One Minus Reflectivity" );
m_previewShaderGUID = "c7c4485750948a045b5dab0985896e17";
}
public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalvar )
{
if( dataCollector.IsSRP )
{
UIUtils.ShowMessage( UniqueId, "Diffuse And Specular From Metallic Node not compatible with SRP" );
return m_outputPorts[0].ErrorValue;
}
if( m_outputPorts[ outputId ].IsLocalValue( dataCollector.PortCategory ) )
{
return m_outputPorts[ outputId ].LocalValue( dataCollector.PortCategory );
}
dataCollector.AddToIncludes( UniqueId, Constants.UnityStandardUtilsLibFuncs );
string albedo = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
string metallic = m_inputPorts[ 1 ].GeneratePortInstructions( ref dataCollector );
string specColorVar = "specColor" + OutputId;
string oneMinusReflectivityVar = "oneMinusReflectivity" + OutputId;
string varName = "diffuseAndSpecularFromMetallic" + OutputId;
dataCollector.AddLocalVariable( UniqueId, PrecisionType.Half, WirePortDataType.FLOAT3, specColorVar, "(0).xxx" );
dataCollector.AddLocalVariable( UniqueId, PrecisionType.Half, WirePortDataType.FLOAT, oneMinusReflectivityVar, "0" );
string varValue = string.Format( FuncFormat, albedo, metallic, specColorVar, oneMinusReflectivityVar );
dataCollector.AddLocalVariable( UniqueId, PrecisionType.Half, WirePortDataType.FLOAT3, varName, varValue );
m_outputPorts[ 0 ].SetLocalValue( varName, dataCollector.PortCategory );
m_outputPorts[ 1 ].SetLocalValue( specColorVar, dataCollector.PortCategory );
m_outputPorts[ 2 ].SetLocalValue( oneMinusReflectivityVar, dataCollector.PortCategory );
return m_outputPorts[ outputId ].LocalValue( dataCollector.PortCategory );
}
}
}
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