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**
** Copyright (C) 2014 NVIDIA Corporation.
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
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texture_coordinate_info coordinateSource( in int coordinateSystem, in int textureSpace )
{
  texture_coordinate_info tci;
  switch( coordinateSystem )
  {
    case texture_coordinate_object :
      tci.position = varObjPos;
      tci.tangent_u = normalize( varObjTangent );
      tci.tangent_v = normalize( varObjBinormal );
      break;
    case texture_coordinate_world :
      tci.position = varWorldPos;
      tci.tangent_u = normalize( varTangent );
      tci.tangent_v = normalize( varBinormal );
      break;
    case texture_coordinate_uvw :
    default :
      tci.position = varTexCoord0;
      tci.tangent_u = normalize( varTangent );
      tci.tangent_v = normalize( varBinormal );
      break;
  }
  return( tci );
}