1 files changed, 85 insertions, 0 deletions
diff --git a/src/plugins/platforms/eglfs/qeglfsoffscreenwindow.cpp b/src/plugins/platforms/eglfs/qeglfsoffscreenwindow.cpp
new file mode 100644
index 0000000000..7bf53ef351
--- /dev/null
+++ b/src/plugins/platforms/eglfs/qeglfsoffscreenwindow.cpp
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qeglfsoffscreenwindow.h"
+#include "qeglfshooks.h"
+#include <QtGui/QOffscreenSurface>
+#include <QtPlatformSupport/private/qeglconvenience_p.h>
+
+QT_BEGIN_NAMESPACE
+
+/*
+    In some cases pbuffers are not available. Triggering QtGui's built-in
+    fallback for a hidden QWindow is not suitable for eglfs since this would be
+    treated as an attempt to create multiple top-level, native windows.
+
+    Therefore this class is provided as an alternative to QEGLPbuffer.
+
+    This class requires the hooks to implement createNativeOffscreenWindow().
+*/
+
+QEglFSOffscreenWindow::QEglFSOffscreenWindow(EGLDisplay display, const QSurfaceFormat &format, QOffscreenSurface *offscreenSurface)
+    : QPlatformOffscreenSurface(offscreenSurface)
+    , m_format(format)
+    , m_display(display)
+    , m_surface(EGL_NO_SURFACE)
+    , m_window(0)
+{
+    m_window = qt_egl_device_integration()->createNativeOffscreenWindow(format);
+    if (!m_window) {
+        qWarning("QEglFSOffscreenWindow: Failed to create native window");
+        return;
+    }
+    EGLConfig config = q_configFromGLFormat(m_display, m_format);
+    m_surface = eglCreateWindowSurface(m_display, config, m_window, 0);
+    if (m_surface != EGL_NO_SURFACE)
+        m_format = q_glFormatFromConfig(m_display, config);
+}
+
+QEglFSOffscreenWindow::~QEglFSOffscreenWindow()
+{
+    if (m_surface != EGL_NO_SURFACE)
+        eglDestroySurface(m_display, m_surface);
+    if (m_window)
+        qt_egl_device_integration()->destroyNativeWindow(m_window);
+}
+
+QT_END_NAMESPACE