/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtOpenGL module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef QGLBUFFER_H+
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#define QGLBUFFER_H+
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+
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#include <QtCore/qscopedpointer.h>+
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#include <QtOpenGL/qgl.h>+
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+
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QT_BEGIN_HEADER+
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+
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QT_BEGIN_NAMESPACE+
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+
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QT_MODULE(OpenGL)+
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+
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class QGLBufferPrivate;+
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+
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class Q_OPENGL_EXPORT QGLBuffer+
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{+
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public:+
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    enum Type+
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    {+
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        VertexBuffer        = 0x8892, // GL_ARRAY_BUFFER+
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        IndexBuffer         = 0x8893, // GL_ELEMENT_ARRAY_BUFFER+
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        PixelPackBuffer     = 0x88EB, // GL_PIXEL_PACK_BUFFER+
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        PixelUnpackBuffer   = 0x88EC  // GL_PIXEL_UNPACK_BUFFER+
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    };+
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+
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    QGLBuffer();+
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    explicit QGLBuffer(QGLBuffer::Type type);+
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    QGLBuffer(const QGLBuffer &other);+
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    ~QGLBuffer();+
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+
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    QGLBuffer &operator=(const QGLBuffer &other);+
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+
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    enum UsagePattern+
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    {+
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        StreamDraw          = 0x88E0, // GL_STREAM_DRAW+
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        StreamRead          = 0x88E1, // GL_STREAM_READ+
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        StreamCopy          = 0x88E2, // GL_STREAM_COPY+
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        StaticDraw          = 0x88E4, // GL_STATIC_DRAW+
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        StaticRead          = 0x88E5, // GL_STATIC_READ+
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        StaticCopy          = 0x88E6, // GL_STATIC_COPY+
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        DynamicDraw         = 0x88E8, // GL_DYNAMIC_DRAW+
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        DynamicRead         = 0x88E9, // GL_DYNAMIC_READ+
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        DynamicCopy         = 0x88EA  // GL_DYNAMIC_COPY+
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    };+
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+
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    enum Access+
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    {+
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        ReadOnly            = 0x88B8, // GL_READ_ONLY+
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        WriteOnly           = 0x88B9, // GL_WRITE_ONLY+
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        ReadWrite           = 0x88BA  // GL_READ_WRITE+
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    };+
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+
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    QGLBuffer::Type type() const;+
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+
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    QGLBuffer::UsagePattern usagePattern() const;+
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    void setUsagePattern(QGLBuffer::UsagePattern value);+
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+
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    bool create();+
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    bool isCreated() const;+
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+
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    void destroy();+
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+
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    bool bind();+
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    void release();+
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+
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    static void release(QGLBuffer::Type type);+
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+
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    GLuint bufferId() const;+
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+
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    int size() const;+
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+
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    bool read(int offset, void *data, int count);+
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    void write(int offset, const void *data, int count);+
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+
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    void allocate(const void *data, int count);+
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    inline void allocate(int count) { allocate(0, count); }+
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+
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    void *map(QGLBuffer::Access access);+
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    bool unmap();+
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+
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private:+
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    QGLBufferPrivate *d_ptr;+
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+
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    Q_DECLARE_PRIVATE(QGLBuffer)+
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};+
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+
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QT_END_NAMESPACE+
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+
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QT_END_HEADER+
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+
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#endif+
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