qtbase/src/plugins/platforms/eglfs/qeglfsbackingstore.cpp

/****************************************************************************
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** Contact: http://www.qt-project.org/
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** This file is part of the plugins of the Qt Toolkit.
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#include "qeglfsbackingstore.h"

#include <QtGui/QOpenGLContext>
#include <QtGui/QOpenGLPaintDevice>

QT_BEGIN_NAMESPACE

QEglFSBackingStore::QEglFSBackingStore(QWindow *window)
    : QPlatformBackingStore(window)
    , m_context(new QOpenGLContext)
{
    m_context->setFormat(window->requestedFormat());
    m_context->setScreen(window->screen());
    m_context->create();
}

QEglFSBackingStore::~QEglFSBackingStore()
{
    delete m_context;
}

QPaintDevice *QEglFSBackingStore::paintDevice()
{
    return m_device;
}

void QEglFSBackingStore::flush(QWindow *window, const QRegion &region, const QPoint &offset)
{
    Q_UNUSED(region);
    Q_UNUSED(offset);

#ifdef QEGL_EXTRA_DEBUG
    qWarning("QEglBackingStore::flush %p", window);
#endif

    m_context->swapBuffers(window);
}

void QEglFSBackingStore::beginPaint(const QRegion &)
{
    // needed to prevent QOpenGLContext::makeCurrent() from failing
    window()->setSurfaceType(QSurface::OpenGLSurface);

    m_context->makeCurrent(window());
    m_device = new QOpenGLPaintDevice(window()->size());
}

void QEglFSBackingStore::endPaint()
{
    delete m_device;
}

void QEglFSBackingStore::resize(const QSize &size, const QRegion &staticContents)
{
    Q_UNUSED(size);
    Q_UNUSED(staticContents);
}

QT_END_NAMESPACE