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178 lines
6.2 KiB
178 lines
6.2 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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using UnityEngine;
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namespace AmplifyShaderEditor
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{
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[Serializable]
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[NodeAttributes( "World Normal", "Surface Data", "Per pixel world normal vector, accepts a <b>Normal</b> vector in tangent space (ie: normalmap)" )]
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public sealed class WorldNormalVector : ParentNode
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{
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private const string NormalVecValStr = "newWorldNormal";
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private const string NormalVecDecStr = "float3 {0} = {1};";
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private const string NormalizeOptionStr = "Normalize";
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private const string NormalizeFunc = "normalize( {0} )";
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[SerializeField]
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private bool m_normalize = 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.FLOAT3, false, "Normal" );
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AddOutputVectorPorts( WirePortDataType.FLOAT3, "XYZ" );
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m_inputPorts[ 0 ].Vector3InternalData = Vector3.forward;
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m_previewShaderGUID = "5f55f4841abb61e45967957788593a9d";
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m_drawPreviewAsSphere = true;
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m_autoWrapProperties = true;
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m_textLabelWidth = 80;
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}
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public override void SetPreviewInputs()
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{
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base.SetPreviewInputs();
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if( m_inputPorts[ 0 ].IsConnected )
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m_previewMaterialPassId = 1;
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else
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m_previewMaterialPassId = 0;
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}
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public override void PropagateNodeData( NodeData nodeData, ref MasterNodeDataCollector dataCollector )
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{
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base.PropagateNodeData( nodeData, ref dataCollector );
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if( m_inputPorts[ 0 ].IsConnected )
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dataCollector.DirtyNormal = 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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m_normalize = EditorGUILayoutToggle( NormalizeOptionStr, m_normalize );
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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( dataCollector.IsTemplate )
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{
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if( m_inputPorts[ 0 ].IsConnected )
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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 value = dataCollector.TemplateDataCollectorInstance.GetWorldNormal( UniqueId, m_currentPrecisionType, m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector ), OutputId );
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if( m_normalize )
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{
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value = string.Format( NormalizeFunc, value );
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}
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RegisterLocalVariable( 0, value, ref dataCollector, "worldNormal" + OutputId );
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return GetOutputVectorItem( 0, outputId, m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory ) );
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}
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else
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{
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string value = dataCollector.TemplateDataCollectorInstance.GetWorldNormal( m_currentPrecisionType );
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string name;
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if( m_normalize )
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{
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name = "normalizedWorldNormal";
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value = string.Format( NormalizeFunc, value );
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RegisterLocalVariable( 0, value, ref dataCollector, name );
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}
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else
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{
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name = value;
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}
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return GetOutputVectorItem( 0, outputId, name );
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}
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}
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if( dataCollector.PortCategory == MasterNodePortCategory.Fragment || dataCollector.PortCategory == MasterNodePortCategory.Debug )
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{
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dataCollector.AddToInput( UniqueId, SurfaceInputs.WORLD_NORMAL, m_currentPrecisionType );
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string result = string.Empty;
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if( m_inputPorts[ 0 ].IsConnected )
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{
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dataCollector.AddToInput( UniqueId, SurfaceInputs.INTERNALDATA, addSemiColon: false );
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dataCollector.ForceNormal = true;
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result = "(WorldNormalVector( " + Constants.InputVarStr + " , " + m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector ) + " ))";
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if( m_normalize )
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{
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result = string.Format( NormalizeFunc, result );
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}
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int connCount = 0;
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for( int i = 0; i < m_outputPorts.Count; i++ )
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{
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connCount += m_outputPorts[ i ].ConnectionCount;
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}
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if( connCount > 1 )
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{
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dataCollector.AddToLocalVariables( UniqueId, string.Format( NormalVecDecStr, NormalVecValStr + OutputId, result ) );
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return GetOutputVectorItem( 0, outputId, NormalVecValStr + OutputId );
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}
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}
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else
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{
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if( !dataCollector.DirtyNormal )
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{
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result = GeneratorUtils.GenerateWorldNormal( ref dataCollector, UniqueId, m_normalize );
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}
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else
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{
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dataCollector.AddToInput( UniqueId, SurfaceInputs.INTERNALDATA, addSemiColon: false );
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result = GeneratorUtils.GenerateWorldNormal( ref dataCollector, UniqueId, m_normalize );
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dataCollector.ForceNormal = true;
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}
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}
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return GetOutputVectorItem( 0, outputId, result );
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}
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else
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{
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if( m_inputPorts[ 0 ].IsConnected )
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{
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string inputTangent = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
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string normal = GeneratorUtils.GenerateWorldNormal( ref dataCollector, UniqueId );
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string tangent = GeneratorUtils.GenerateWorldTangent( ref dataCollector, UniqueId );
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dataCollector.AddToVertexLocalVariables( UniqueId, "float3x3 tangentToWorld = CreateTangentToWorldPerVertex( " + normal + ", " + tangent + ", " + Constants.VertexShaderInputStr + ".tangent.w );" );
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dataCollector.AddToVertexLocalVariables( UniqueId, "float3 tangentNormal" + OutputId + " = " + inputTangent + ";" );
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string result = "(tangentToWorld[0] * tangentNormal" + OutputId + ".x + tangentToWorld[1] * tangentNormal" + OutputId + ".y + tangentToWorld[2] * tangentNormal" + OutputId + ".z)";
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if( m_normalize )
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{
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result = string.Format( NormalizeFunc, result );
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}
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dataCollector.AddToVertexLocalVariables( UniqueId, "float3 modWorldNormal" + OutputId + " = " + result + ";" );
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return GetOutputVectorItem( 0, outputId, "modWorldNormal" + OutputId );
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}
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else
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{
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string result = GeneratorUtils.GenerateWorldNormal( ref dataCollector, UniqueId, m_normalize );
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return GetOutputVectorItem( 0, outputId, result );
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}
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}
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}
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public override void ReadFromString( ref string[] nodeParams )
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{
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base.ReadFromString( ref nodeParams );
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if( UIUtils.CurrentShaderVersion() > 14202 )
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{
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m_normalize = Convert.ToBoolean( GetCurrentParam( ref nodeParams ) );
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}
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}
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public override void WriteToString( ref string nodeInfo, ref string connectionsInfo )
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{
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base.WriteToString( ref nodeInfo, ref connectionsInfo );
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IOUtils.AddFieldValueToString( ref nodeInfo, m_normalize );
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}
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}
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}
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