1 files changed, 59 insertions, 0 deletions
diff --git a/src/webenginequick/api/qtwebenginequickglobal.cpp b/src/webenginequick/api/qtwebenginequickglobal.cpp
new file mode 100644
index 000000000..e24ef643b
--- /dev/null
+++ b/src/webenginequick/api/qtwebenginequickglobal.cpp
@@ -0,0 +1,59 @@
+// 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
+
+#include <QtCore/qcoreapplication.h>
+#include <QtQuick/qquickwindow.h>
+#include <QtWebEngineQuick/qtwebenginequickglobal.h>
+
+namespace QtWebEngineCore
+{
+    extern void initialize();
+}
+
+QT_BEGIN_NAMESPACE
+
+namespace QtWebEngineQuick {
+
+/*!
+    \namespace QtWebEngineQuick
+    \inmodule QtWebEngineQuick
+    \ingroup qtwebengine-namespaces
+    \keyword QtWebEngine Namespace
+
+    \brief Helper functions for the \QWE (Qt Quick) module.
+
+    The \l[CPP]{QtWebEngineQuick} namespace is part of the \QWE module.
+*/
+
+/*!
+    \fn QtWebEngineQuick::initialize()
+
+    Sets up an OpenGL Context that can be shared between threads. This has to be done before
+    QGuiApplication is created and before window's QPlatformOpenGLContext is created.
+
+    This has the same effect as setting the Qt::AA_ShareOpenGLContexts
+    attribute with QCoreApplication::setAttribute before constructing
+    QGuiApplication.
+*/
+void initialize()
+{
+    auto api = QQuickWindow::graphicsApi();
+    if (!QCoreApplication::startingUp()) {
+        if (api == QSGRendererInterface::OpenGL || (api != QSGRendererInterface::Vulkan
+                && api != QSGRendererInterface::Metal && api != QSGRendererInterface::Direct3D11)) {
+            qWarning("QtWebEngineQuick::initialize() called with QCoreApplication object already created and should be call before. "\
+                     "This is depreciated and may fail in the future.");
+        }
+        QtWebEngineCore::initialize();
+        return;
+    }
+
+    // call initialize the same way as widgets do
+    qAddPreRoutine(QtWebEngineCore::initialize);
+    if (api != QSGRendererInterface::OpenGL && api != QSGRendererInterface::Vulkan
+            && api != QSGRendererInterface::Metal && api != QSGRendererInterface::Direct3D11)
+        QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGL);
+}
+} // namespace QtWebEngineQuick
+
+QT_END_NAMESPACE