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+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QOPENGLTEXTUREBLITTER_P_H
+#define QOPENGLTEXTUREBLITTER_P_H
+
+#include <QtGui/qopengl.h>
+#include <QtGui/QMatrix3x3>
+
+QT_BEGIN_NAMESPACE
+
+class QOpenGLTextureBlitterPrivate;
+
+
+class Q_GUI_EXPORT QOpenGLTextureBlitter
+{
+public:
+ QOpenGLTextureBlitter();
+ ~QOpenGLTextureBlitter();
+
+ enum Origin {
+ OriginBottomLeft,
+ OriginTopLeft
+ };
+
+ bool create();
+ void destroy();
+
+ void bind();
+ void release();
+
+ void setSwizzleRB(bool swizzle);
+
+ void blit(GLuint texture, const QMatrix4x4 &targetTransform, Origin sourceOrigin);
+ void blit(GLuint texture, const QMatrix4x4 &targetTransform, const QMatrix3x3 &sourceTransform);
+
+ static QMatrix4x4 targetTransform(const QRectF &target, const QRect &viewport, Origin origin);
+ static QMatrix3x3 sourceTransform(const QRectF &subTexture, const QSize &textureSize, Origin origin);
+
+private:
+ Q_DISABLE_COPY(QOpenGLTextureBlitter);
+ Q_DECLARE_PRIVATE(QOpenGLTextureBlitter);
+ QScopedPointer<QOpenGLTextureBlitterPrivate> d_ptr;
+};
+
+QT_END_NAMESPACE
+
+#endif //QOPENGLTEXTUREBLITTER_P_H