qglxintegration.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#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 QNativeInterface::QGLXContext
{
public:
    QGLXContext(Display *display, QXcbScreen *screen, const QSurfaceFormat &format, QPlatformOpenGLContext *share);
    QGLXContext(Display *display, GLXContext context, void *visualInfo, QPlatformOpenGLContext *share);
    ~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 nativeContext() const override { return glxContext(); }
 
    GLXContext glxContext() const { return m_context; }
    GLXFBConfig glxConfig() const { return m_config; }
 
    static bool supportsThreading();
    static void queryDummyContext();
 
private:
    Display *m_display = nullptr;
    GLXFBConfig m_config = nullptr;
    GLXContext m_context = nullptr;
    GLXContext m_shareContext = nullptr;
    QSurfaceFormat m_format;
    bool m_isPBufferCurrent = false;
    bool m_ownsContext = false;
    GLenum (APIENTRY * m_getGraphicsResetStatus)() = nullptr;
    bool m_lost = false;
    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