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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWebEngine module 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "gl_context_qt.h"
#include <QGuiApplication>
#include <QOpenGLContext>
#include <QThread>
#include <qpa/qplatformnativeinterface.h>
#include "ui/gl/gl_context_egl.h"
#include "ui/gl/gl_implementation.h"
#if defined(USE_X11)
#include <X11/Xlib.h>
#endif
#if defined(OS_WIN)
#include "ui/gl/gl_context_wgl.h"
#endif
QT_BEGIN_NAMESPACE
Q_GUI_EXPORT QOpenGLContext *qt_gl_global_share_context();
GLContextHelper* GLContextHelper::contextHelper = 0;
namespace {
inline void *resourceForContext(const QByteArray &resource)
{
QOpenGLContext *shareContext = qt_gl_global_share_context();
if (!shareContext) {
qFatal("QWebEngine: OpenGL resource sharing is not set up in QtQuick. Please make sure to call QtWebEngine::initialize() in your main() function.");
}
return qApp->platformNativeInterface()->nativeResourceForContext(resource, shareContext);
}
inline void *resourceForIntegration(const QByteArray &resource)
{
return qApp->platformNativeInterface()->nativeResourceForIntegration(resource);
}
}
void GLContextHelper::initialize()
{
if (!contextHelper)
contextHelper = new GLContextHelper;
}
void GLContextHelper::destroy()
{
delete contextHelper;
contextHelper = 0;
}
bool GLContextHelper::initializeContextOnBrowserThread(gfx::GLContext* context, gfx::GLSurface* surface)
{
return context->Initialize(surface, gfx::PreferDiscreteGpu);
}
bool GLContextHelper::initializeContext(gfx::GLContext* context, gfx::GLSurface* surface)
{
bool ret = false;
Qt::ConnectionType connType = (QThread::currentThread() == qApp->thread()) ? Qt::DirectConnection : Qt::BlockingQueuedConnection;
QMetaObject::invokeMethod(contextHelper, "initializeContextOnBrowserThread", connType,
Q_RETURN_ARG(bool, ret),
Q_ARG(gfx::GLContext*, context),
Q_ARG(gfx::GLSurface*, surface));
return ret;
}
void* GLContextHelper::getEGLConfig()
{
QByteArray resource = QByteArrayLiteral("eglconfig");
return resourceForContext(resource);
}
void* GLContextHelper::getXConfig()
{
return resourceForContext(QByteArrayLiteral("glxconfig"));
}
void* GLContextHelper::getEGLDisplay()
{
return resourceForIntegration(QByteArrayLiteral("egldisplay"));
}
void* GLContextHelper::getXDisplay()
{
void *display = qApp->platformNativeInterface()->nativeResourceForScreen(QByteArrayLiteral("display"), qApp->primaryScreen());
#if defined(USE_X11)
if (!display) {
// XLib isn't available or has not been initialized, which is a decision we wish to
// support, for example for the GPU process.
display = XOpenDisplay(NULL);
}
#endif
return display;
}
void* GLContextHelper::getNativeDisplay()
{
return resourceForIntegration(QByteArrayLiteral("nativedisplay"));
}
QT_END_NAMESPACE
#if defined(USE_OZONE) || defined(OS_WIN)
namespace gfx {
scoped_refptr<GLContext> GLContext::CreateGLContext(GLShareGroup* share_group, GLSurface* compatible_surface, GpuPreference gpu_preference)
{
#if defined(OS_WIN)
scoped_refptr<GLContext> context;
if (GetGLImplementation() == kGLImplementationDesktopGL) {
context = new GLContextWGL(share_group);
if (!context->Initialize(compatible_surface, gpu_preference))
return nullptr;
return context;
} else {
context = new GLContextEGL(share_group);
}
#else
scoped_refptr<GLContext> context = new GLContextEGL(share_group);
#endif
if (!GLContextHelper::initializeContext(context.get(), compatible_surface))
return NULL;
return context;
}
} // namespace gfx
#endif // defined(USE_OZONE) || defined(OS_WIN)
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