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using UnityEngine;
using UnityEditor;
using System;
namespace AmplifyShaderEditor
{
[Serializable]
[NodeAttributes( "Surface Depth", "Surface Data", "Returns the surface view depth" )]
public sealed class SurfaceDepthNode : ParentNode
{
[SerializeField]
private int m_viewSpaceInt = 0;
private readonly string[] m_viewSpaceStr = { "Eye Space", "0-1 Space" };
private readonly string[] m_vertexNameStr = { "eyeDepth", "clampDepth" };
private UpperLeftWidgetHelper m_upperLeftWidget = new UpperLeftWidgetHelper();
protected override void CommonInit( int uniqueId )
{
base.CommonInit( uniqueId );
AddInputPort( WirePortDataType.FLOAT3, false, "Vertex Position" );
AddOutputPort( WirePortDataType.FLOAT, "Depth" );
m_autoWrapProperties = true;
m_hasLeftDropdown = true;
SetAdditonalTitleText( string.Format( Constants.SubTitleSpaceFormatStr, m_viewSpaceStr[ m_viewSpaceInt ] ) );
}
public override void Destroy()
{
base.Destroy();
m_upperLeftWidget = null;
}
public override void AfterCommonInit()
{
base.AfterCommonInit();
if( PaddingTitleLeft == 0 )
{
PaddingTitleLeft = Constants.PropertyPickerWidth + Constants.IconsLeftRightMargin;
if( PaddingTitleRight == 0 )
PaddingTitleRight = Constants.PropertyPickerWidth + Constants.IconsLeftRightMargin;
}
}
public override void Draw( DrawInfo drawInfo )
{
base.Draw( drawInfo );
EditorGUI.BeginChangeCheck();
m_viewSpaceInt = m_upperLeftWidget.DrawWidget( this, m_viewSpaceInt, m_viewSpaceStr );
if( EditorGUI.EndChangeCheck() )
{
SetAdditonalTitleText( string.Format( Constants.SubTitleSpaceFormatStr, m_viewSpaceStr[ m_viewSpaceInt ] ) );
}
}
public override void DrawProperties()
{
base.DrawProperties();
EditorGUI.BeginChangeCheck();
m_viewSpaceInt = EditorGUILayoutPopup( "View Space", m_viewSpaceInt, m_viewSpaceStr );
if( EditorGUI.EndChangeCheck() )
{
SetAdditonalTitleText( string.Format( Constants.SubTitleSpaceFormatStr, m_viewSpaceStr[ m_viewSpaceInt ] ) );
}
}
public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalvar )
{
if( dataCollector.IsTemplate )
{
if( m_inputPorts[ 0 ].IsConnected )
{
string space = string.Empty;
if( m_viewSpaceInt == 1 )
space = " * _ProjectionParams.w";
string varName = "customSurfaceDepth" + OutputId;
GenerateInputInVertex( ref dataCollector, 0, varName, false );
string instruction = "-UnityObjectToViewPos( " + varName + " ).z" + space;
if( dataCollector.IsSRP )
instruction = "-TransformWorldToView(TransformObjectToWorld( " + varName + " )).z" + space;
string eyeVarName = "customEye" + OutputId;
dataCollector.TemplateDataCollectorInstance.RegisterCustomInterpolatedData( eyeVarName, WirePortDataType.FLOAT, CurrentPrecisionType, instruction );
return eyeVarName;
}
else
{
return dataCollector.TemplateDataCollectorInstance.GetEyeDepth( CurrentPrecisionType, true, MasterNodePortCategory.Fragment, m_viewSpaceInt );
}
}
if( dataCollector.PortCategory == MasterNodePortCategory.Vertex || dataCollector.PortCategory == MasterNodePortCategory.Tessellation )
{
string vertexVarName = string.Empty;
if( m_inputPorts[ 0 ].IsConnected )
{
vertexVarName = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
}
else
{
vertexVarName = Constants.VertexShaderInputStr + ".vertex.xyz";
}
string vertexSpace = m_viewSpaceInt == 1 ? " * _ProjectionParams.w" : "";
string vertexInstruction = "-UnityObjectToViewPos( " + vertexVarName + " ).z" + vertexSpace;
dataCollector.AddVertexInstruction( "float " + m_vertexNameStr[ m_viewSpaceInt ] + " = " + vertexInstruction, UniqueId );
return m_vertexNameStr[ m_viewSpaceInt ];
}
dataCollector.AddToIncludes( UniqueId, Constants.UnityShaderVariables );
if( dataCollector.TesselationActive )
{
if( m_inputPorts[ 0 ].IsConnected )
{
string space = string.Empty;
if( m_viewSpaceInt == 1 )
space = " * _ProjectionParams.w";
if( m_outputPorts[ 0 ].IsLocalValue( dataCollector.PortCategory ) )
return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
string value = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
RegisterLocalVariable( 0, string.Format( "-UnityObjectToViewPos( {0} ).z", value ) + space, ref dataCollector, "customSurfaceDepth" + OutputId );
return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
}
else
{
string eyeDepth = GeneratorUtils.GenerateScreenDepthOnFrag( ref dataCollector, UniqueId, CurrentPrecisionType );
if( m_viewSpaceInt == 1 )
{
dataCollector.AddLocalVariable( UniqueId, CurrentPrecisionType, WirePortDataType.FLOAT, m_vertexNameStr[ 1 ], eyeDepth + " * _ProjectionParams.w" );
return m_vertexNameStr[ 1 ];
}
else
{
return eyeDepth;
}
}
}
else
{
string space = string.Empty;
if( m_viewSpaceInt == 1 )
space = " * _ProjectionParams.w";
if( m_inputPorts[ 0 ].IsConnected )
{
string varName = "customSurfaceDepth" + OutputId;
GenerateInputInVertex( ref dataCollector, 0, varName, false );
dataCollector.AddToInput( UniqueId, varName, WirePortDataType.FLOAT );
string instruction = "-UnityObjectToViewPos( " + varName + " ).z" + space;
dataCollector.AddToVertexLocalVariables( UniqueId , Constants.VertexShaderOutputStr + "." + varName + " = " + instruction+";" );
return Constants.InputVarStr + "." + varName;
}
else
{
dataCollector.AddToInput( UniqueId, m_vertexNameStr[ m_viewSpaceInt ], WirePortDataType.FLOAT );
string instruction = "-UnityObjectToViewPos( " + Constants.VertexShaderInputStr + ".vertex.xyz ).z" + space;
dataCollector.AddToVertexLocalVariables( UniqueId , Constants.VertexShaderOutputStr + "." + m_vertexNameStr[ m_viewSpaceInt ] + " = " + instruction+";" );
return Constants.InputVarStr + "." + m_vertexNameStr[ m_viewSpaceInt ];
}
}
}
public override void ReadFromString( ref string[] nodeParams )
{
base.ReadFromString( ref nodeParams );
m_viewSpaceInt = Convert.ToInt32( GetCurrentParam( ref nodeParams ) );
SetAdditonalTitleText( string.Format( Constants.SubTitleSpaceFormatStr, m_viewSpaceStr[ m_viewSpaceInt ] ) );
}
public override void WriteToString( ref string nodeInfo, ref string connectionsInfo )
{
base.WriteToString( ref nodeInfo, ref connectionsInfo );
IOUtils.AddFieldValueToString( ref nodeInfo, m_viewSpaceInt );
}
}
}
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