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// Amplify Shader Editor - Visual Shader Editing Tool
// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
namespace AmplifyShaderEditor
{
[System.Serializable]
[NodeAttributes( "Distance-based Tessellation", "Miscellaneous", "Calculates tessellation based on distance from camera" )]
public sealed class DistanceBasedTessNode : TessellationParentNode
{
private const string FunctionBody = "UnityDistanceBasedTess( v0.vertex, v1.vertex, v2.vertex, {0},{1},{2})";
protected override void CommonInit( int uniqueId )
{
base.CommonInit( uniqueId );
AddInputPort( WirePortDataType.FLOAT, false,"Factor");
AddInputPort( WirePortDataType.FLOAT, false, "Min Dist" );
AddInputPort( WirePortDataType.FLOAT, false, "Max Dist" );
AddOutputPort( WirePortDataType.FLOAT4, Constants.EmptyPortValue );
}
protected override string BuildTessellationFunction( ref MasterNodeDataCollector dataCollector )
{
return string.Format( FunctionBody,
m_inputPorts[ 1 ].GeneratePortInstructions( ref dataCollector ),
m_inputPorts[ 2 ].GeneratePortInstructions( ref dataCollector ),
m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector ) );
}
}
}
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