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68 lines
2.1 KiB
68 lines
2.1 KiB
// Amplify Shader Editor - Visual Shader Editing Tool
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// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
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using System;
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namespace AmplifyShaderEditor
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{
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[NodeAttributes( "Unpack Scale Normal", "Textures", "Applies UnpackNormal/UnpackScaleNormal function" )]
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[Serializable]
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public class UnpackScaleNormalNode : ParentNode
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{
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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.FLOAT4, false, "Value" );
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AddInputPort( WirePortDataType.FLOAT, false, "Scale" );
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m_inputPorts[ 1 ].FloatInternalData = 1;
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AddOutputVectorPorts( WirePortDataType.FLOAT3, "XYZ" );
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m_useInternalPortData = true;
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m_previewShaderGUID = "8b0ae05e25d280c45af81ded56f8012e";
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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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string src = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
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bool isScaledNormal = false;
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if ( m_inputPorts[ 1 ].IsConnected )
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{
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isScaledNormal = true;
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}
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else
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{
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if ( m_inputPorts[ 1 ].FloatInternalData != 1 )
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{
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isScaledNormal = true;
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}
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}
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string normalMapUnpackMode = string.Empty;
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string scaleValue = isScaledNormal?m_inputPorts[ 1 ].GeneratePortInstructions( ref dataCollector ):"1.0";
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normalMapUnpackMode = string.Format( TemplateHelperFunctions.CreateUnpackNormalStr( dataCollector, isScaledNormal, scaleValue ), src);
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if( isScaledNormal && !( dataCollector.IsTemplate && dataCollector.IsSRP ) )
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{
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dataCollector.AddToIncludes( UniqueId, Constants.UnityStandardUtilsLibFuncs );
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}
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int outputUsage = 0;
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for ( int i = 0; i < m_outputPorts.Count; i++ )
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{
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if ( m_outputPorts[ i ].IsConnected )
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outputUsage += 1;
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}
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if ( outputUsage > 1 )
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{
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string varName = "localUnpackNormal" + UniqueId;
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dataCollector.AddLocalVariable( UniqueId, "float3 " + varName + " = " + normalMapUnpackMode + ";" );
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return GetOutputVectorItem( 0, outputId, varName );
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}
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else
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{
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return GetOutputVectorItem( 0, outputId, normalMapUnpackMode );
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}
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}
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}
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}
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