void UpdateSpecularMetallicPorts()
{
if( m_workflow == ASEStandardSurfaceWorkflow.Specular )
m_inputPorts[ 3 ].ChangeProperties( "Specular", WirePortDataType.FLOAT3, false );
else
m_inputPorts[ 3 ].ChangeProperties( "Metallic", WirePortDataType.FLOAT, false );
}