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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 <QtGui/private/qtgui-config_p.h>
#include <qpa/qplatformnativeinterface.h>
#include "ui/gl/gl_context_egl.h"
#include "ui/gl/gl_implementation.h"
#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 = nullptr;
namespace {
inline void *resourceForContext(const QByteArray &resource)
{
#if QT_CONFIG(opengl)
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 QtWebEngineCore::initialize() in your main() function.");
}
return qApp->platformNativeInterface()->nativeResourceForContext(resource, shareContext);
#else
return nullptr;
#endif
}
inline void *resourceForIntegration(const QByteArray &resource)
{
return qApp->platformNativeInterface()->nativeResourceForIntegration(resource);
}
}
void GLContextHelper::initialize()
{
if (!contextHelper)
contextHelper = new GLContextHelper;
#if QT_CONFIG(opengl)
if (QGuiApplication::platformName() == QLatin1String("offscreen")){
contextHelper->m_robustness = false;
return;
}
if (QOpenGLContext *context = qt_gl_global_share_context())
contextHelper->m_robustness = context->format().testOption(QSurfaceFormat::ResetNotification);
#endif
}
void GLContextHelper::destroy()
{
delete contextHelper;
contextHelper = nullptr;
}
bool GLContextHelper::initializeContextOnBrowserThread(gl::GLContext* context, gl::GLSurface* surface, gl::GLContextAttribs attribs)
{
return context->Initialize(surface, attribs);
}
bool GLContextHelper::initializeContext(gl::GLContext* context, gl::GLSurface* surface, gl::GLContextAttribs attribs)
{
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(gl::GLContext*, context),
Q_ARG(gl::GLSurface*, surface),
Q_ARG(gl::GLContextAttribs, attribs));
return ret;
}
void* GLContextHelper::getEGLConfig()
{
QByteArray resource = QByteArrayLiteral("eglconfig");
return resourceForContext(resource);
}
void* GLContextHelper::getGlXConfig()
{
QByteArray resource = QByteArrayLiteral("glxconfig");
return resourceForContext(resource);
}
void* GLContextHelper::getEGLDisplay()
{
#ifdef Q_OS_WIN
// Windows QPA plugin does not implement resourceForIntegration for "egldisplay".
// Use resourceForContext instead.
return resourceForContext(QByteArrayLiteral("egldisplay"));
#else
return resourceForIntegration(QByteArrayLiteral("egldisplay"));
#endif
}
void* GLContextHelper::getXDisplay()
{
#if QT_CONFIG(xcb)
auto *x11app = qGuiApp->nativeInterface<QNativeInterface::QX11Application>();
return x11app ? x11app->display() : nullptr;
#else
return nullptr;
#endif
}
void* GLContextHelper::getNativeDisplay()
{
return resourceForIntegration(QByteArrayLiteral("nativedisplay"));
}
QFunctionPointer GLContextHelper::getGlXGetProcAddress()
{
QFunctionPointer get_proc_address = nullptr;
#if QT_CONFIG(xcb_glx)
if (QOpenGLContext *context = qt_gl_global_share_context()) {
get_proc_address = context->getProcAddress("glXGetProcAddress");
}
#endif
return get_proc_address;
}
QFunctionPointer GLContextHelper::getEglGetProcAddress()
{
QFunctionPointer get_proc_address = nullptr;
#if QT_CONFIG(opengl)
if (QOpenGLContext *context = qt_gl_global_share_context()) {
get_proc_address = context->getProcAddress("eglGetProcAddress");
}
#endif
return get_proc_address;
}
void *GLContextHelper::getGlxPlatformInterface()
{
#if QT_CONFIG(xcb_glx)
if (QOpenGLContext *context = qt_gl_global_share_context())
return context->nativeInterface<QNativeInterface::QGLXContext>();
#endif
return nullptr;
}
void *GLContextHelper::getEglPlatformInterface()
{
#if QT_CONFIG(opengl) && QT_CONFIG(egl)
if (QOpenGLContext *context = qt_gl_global_share_context())
return context->nativeInterface<QNativeInterface::QEGLContext>();
#endif
return nullptr;
}
bool GLContextHelper::isCreateContextRobustnessSupported()
{
return contextHelper->m_robustness;
}
QT_END_NAMESPACE
#if defined(OS_WIN)
namespace gl {
namespace init {
scoped_refptr<GLContext> CreateGLContext(GLShareGroup* share_group,
GLSurface* compatible_surface,
const GLContextAttribs& attribs)
{
scoped_refptr<GLContext> context;
if (GetGLImplementation() == kGLImplementationDesktopGL) {
context = new GLContextWGL(share_group);
if (!context->Initialize(compatible_surface, attribs))
return nullptr;
return context;
} else {
context = new GLContextEGL(share_group);
}
if (!GLContextHelper::initializeContext(context.get(), compatible_surface, attribs))
return nullptr;
return context;
}
} // namespace init
} // namespace gl
#endif // defined(OS_WIN)
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