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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the plugins 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 QEGLPLATFORMCONTEXT_H
#define QEGLPLATFORMCONTEXT_H

#include <qpa/qplatformwindow.h>
#include <qpa/qplatformopenglcontext.h>
#include <EGL/egl.h>

QT_BEGIN_NAMESPACE

class QEGLPlatformContext : public QPlatformOpenGLContext
{
public:
    QEGLPlatformContext(const QSurfaceFormat &format, QPlatformOpenGLContext *share, EGLDisplay display);
    QEGLPlatformContext(const QSurfaceFormat &format, QPlatformOpenGLContext *share, EGLDisplay display,
                        EGLConfig config);
    ~QEGLPlatformContext();

    bool makeCurrent(QPlatformSurface *surface);
    void doneCurrent();
    void swapBuffers(QPlatformSurface *surface);
    void (*getProcAddress(const QByteArray &procName)) ();

    QSurfaceFormat format() const;
    bool isSharing() const { return m_shareContext != EGL_NO_CONTEXT; }
    bool isValid() const { return m_eglContext != EGL_NO_CONTEXT; }

    EGLContext eglContext() const;
    EGLDisplay eglDisplay() const;
    EGLConfig eglConfig() const;

protected:
    virtual EGLSurface eglSurfaceForPlatformSurface(QPlatformSurface *surface) = 0;

private:
    void init(const QSurfaceFormat &format, QPlatformOpenGLContext *share);

    EGLContext m_eglContext;
    EGLContext m_shareContext;
    EGLDisplay m_eglDisplay;
    EGLConfig m_eglConfig;
    QSurfaceFormat m_format;
    int m_swapInterval;
    bool m_swapIntervalEnvChecked;
    int m_swapIntervalFromEnv;
};

QT_END_NAMESPACE

#endif //QEGLPLATFORMCONTEXT_H