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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( "Parallax Offset", "UV Coordinates", "Calculates UV offset for parallax normal mapping" )]
public sealed class ParallaxOffsetHlpNode : HelperParentNode
{
public readonly string[] ParallaxOffsetFunc =
{
"inline float2 ParallaxOffset( half h, half height, half3 viewDir )\n",
"{\n",
"\th = h * height - height/2.0;\n",
"\tfloat3 v = normalize( viewDir );\n",
"\tv.z += 0.42;\n",
"\treturn h* (v.xy / v.z);\n",
"}\n"
};
void OnSRPActionEvent( int outputId, ref MasterNodeDataCollector dataCollector )
{
dataCollector.AddFunction( ParallaxOffsetFunc[ 0 ], ParallaxOffsetFunc, false );
}
protected override void CommonInit( int uniqueId )
{
base.CommonInit( uniqueId );
m_funcType = "ParallaxOffset";
m_inputPorts[ 0 ].ChangeProperties( "H", WirePortDataType.FLOAT, false );
AddInputPort( WirePortDataType.FLOAT, false, "Height" );
AddInputPort( WirePortDataType.FLOAT3, false, "ViewDir (tan)" );
m_outputPorts[ 0 ].ChangeType( WirePortDataType.FLOAT2, false );
m_outputPorts[ 0 ].Name = "Out";
OnHDAction = OnSRPActionEvent;
OnLightweightAction = OnSRPActionEvent;
m_previewShaderGUID = "6085f804c6fbf354eac039c11feaa7cc";
}
protected override void OnUniqueIDAssigned()
{
base.OnUniqueIDAssigned();
m_localVarName = "paralaxOffset" + OutputId;
}
}
}
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