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/****************************************************************************
**
** Copyright (C) 2014 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
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 );
}
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