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****************************************************************************/

#ifndef QGLXINTEGRATION_H
#define QGLXINTEGRATION_H

#include "qxcbwindow.h"
#include "qxcbscreen.h"

#include <qpa/qplatformopenglcontext.h>
#include <qpa/qplatformoffscreensurface.h>
#include <QtGui/QSurfaceFormat>

#include <QtCore/QMutex>

#include <GL/glx.h>

QT_BEGIN_NAMESPACE

class QGLXContext : public QPlatformOpenGLContext
{
public:
    QGLXContext(QXcbScreen *screen, const QSurfaceFormat &format, QPlatformOpenGLContext *share,
                const QVariant &nativeHandle);
    ~QGLXContext();

    bool makeCurrent(QPlatformSurface *surface) override;
    void doneCurrent() override;
    void swapBuffers(QPlatformSurface *surface) override;
    QFunctionPointer getProcAddress(const char *procName) override;

    QSurfaceFormat format() const override;
    bool isSharing() const override;
    bool isValid() const override;

    GLXContext glxContext() const { return m_context; }
    GLXFBConfig glxConfig() const { return m_config; }

    QVariant nativeHandle() const;

    static bool supportsThreading();
    static void queryDummyContext();

private:
    void init(QXcbScreen *screen, QPlatformOpenGLContext *share);
    void init(QXcbScreen *screen, QPlatformOpenGLContext *share, const QVariant &nativeHandle);

    Display *m_display;
    GLXFBConfig m_config;
    GLXContext m_context;
    GLXContext m_shareContext;
    QSurfaceFormat m_format;
    bool m_isPBufferCurrent;
    bool m_ownsContext;
    GLenum (APIENTRY * m_getGraphicsResetStatus)();
    bool m_lost;
    static bool m_queriedDummyContext;
    static bool m_supportsThreading;
};


class QGLXPbuffer : public QPlatformOffscreenSurface
{
public:
    explicit QGLXPbuffer(QOffscreenSurface *offscreenSurface);
    ~QGLXPbuffer();

    QSurfaceFormat format() const override { return m_format; }
    bool isValid() const override { return m_pbuffer != 0; }

    GLXPbuffer pbuffer() const { return m_pbuffer; }

private:
    QXcbScreen *m_screen;
    QSurfaceFormat m_format;
    Display *m_display;
    GLXPbuffer m_pbuffer;
};

QT_END_NAMESPACE

#endif