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// Copyright (C) 2021 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 "qtwebenginecoreglobal_p.h"
#include <QGuiApplication>
#if QT_CONFIG(opengl)
# include <QOpenGLContext>
#ifdef Q_OS_MACOS
#include <sys/types.h>
#include <sys/sysctl.h>
#include <QOffscreenSurface>
#include "macos_context_type_helper.h"
#endif
#endif
#include <QThread>
#include <QQuickWindow>
#include "web_engine_context.h"
#if QT_CONFIG(opengl)
QT_BEGIN_NAMESPACE
Q_GUI_EXPORT void qt_gl_set_global_share_context(QOpenGLContext *context);
Q_GUI_EXPORT QOpenGLContext *qt_gl_global_share_context();
QT_END_NAMESPACE
#endif
#if QT_CONFIG(opengl)
#ifdef Q_OS_MACOS
static bool needsOfflineRendererWorkaround()
{
size_t hwmodelsize = 0;
if (sysctlbyname("hw.model", nullptr, &hwmodelsize, nullptr, 0) == -1)
return false;
char hwmodel[hwmodelsize];
if (sysctlbyname("hw.model", &hwmodel, &hwmodelsize, nullptr, 0) == -1)
return false;
return QString::fromLatin1(hwmodel) == QLatin1String("MacPro6,1");
}
#endif
#endif
namespace QtWebEngineCore {
#if QT_CONFIG(opengl)
static QOpenGLContext *shareContext;
static void deleteShareContext()
{
if (qt_gl_global_share_context() == shareContext)
qt_gl_set_global_share_context(nullptr);
delete shareContext;
shareContext = 0;
}
#endif
// ### Qt 6: unify this logic and Qt::AA_ShareOpenGLContexts.
// QtWebEngineQuick::initialize was introduced first and meant to be called
// after the QGuiApplication creation, when AA_ShareOpenGLContexts fills
// the same need but the flag has to be set earlier.
Q_WEBENGINECORE_PRIVATE_EXPORT void initialize()
{
#if QT_CONFIG(opengl)
#ifdef Q_OS_WIN32
qputenv("QT_D3DCREATE_MULTITHREADED", "1");
#endif
#ifdef Q_OS_MACOS
if (needsOfflineRendererWorkaround())
qputenv("QT_MAC_PRO_WEBENGINE_WORKAROUND", "1");
#endif
// No need to override the shared context if QApplication already set one (e.g with Qt::AA_ShareOpenGLContexts).
if (!qt_gl_global_share_context()) {
QCoreApplication *app = QCoreApplication::instance();
if (!app) {
qFatal("QtWebEngineQuick::initialize() but no core application instance.");
return;
}
// Bail out silently if the user did not construct a QGuiApplication.
if (!qobject_cast<QGuiApplication *>(app))
return;
if (app->thread() != QThread::currentThread()) {
qFatal("QtWebEngineQuick::initialize() must be called from the Qt gui thread.");
return;
}
if (shareContext)
return;
shareContext = new QOpenGLContext;
QSurfaceFormat format = QSurfaceFormat::defaultFormat();
#if defined(Q_OS_MACOS)
if (format == QSurfaceFormat()) {
QOpenGLContext testContext;
// Chromium turns off OpenGL for CoreProfiles with versions < 4.1
// The newest Mac that only supports 3.3 was released in Mid 2011,
// so it should be safe to request 4.1, but we still double check it
// works in order not to set an invalid default surface format.
format.setVersion(4, 1);
format.setProfile(QSurfaceFormat::CoreProfile);
testContext.setFormat(format);
if (testContext.create()) {
QOffscreenSurface surface;
surface.setFormat(format);
surface.create();
if (testContext.makeCurrent(&surface)) {
// The Cocoa QPA integration allows sharing between OpenGL 3.2 and 4.1 contexts,
// which means even though we requested a 4.1 context, if we only get a 3.2
// context, it will still work an Chromium will not black list it.
if (testContext.format().version() >= qMakePair(3, 2)
&& testContext.format().profile() == QSurfaceFormat::CoreProfile
&& !isCurrentContextSoftware()) {
QSurfaceFormat::setDefaultFormat(format);
} else {
qWarning("The available OpenGL surface format was either not version 3.2 "
"or higher or not a Core Profile.\n"
"Chromium on macOS will fall back to software rendering in this "
"case.\n"
"Hardware acceleration and features such as WebGL will not be "
"available.");
format = QSurfaceFormat::defaultFormat();
}
testContext.doneCurrent();
}
surface.destroy();
}
} else {
// The user explicitly requested a specific surface format that does not fit Chromium's
// requirements. Warn them about this.
if (format.version() < qMakePair(3, 2)
|| format.profile() != QSurfaceFormat::CoreProfile) {
qWarning("An OpenGL surfcace format was requested that is either not version 3.2 "
"or higher or a not Core Profile.\n"
"Chromium on macOS will fall back to software rendering in this case.\n"
"Hardware acceleration and features such as WebGL will not be available.");
}
}
#endif
shareContext->setFormat(format);
shareContext->create();
qAddPostRoutine(deleteShareContext);
qt_gl_set_global_share_context(shareContext);
// Classes like QOpenGLWidget check for the attribute
app->setAttribute(Qt::AA_ShareOpenGLContexts);
}
#if defined(Q_OS_MACOS)
// Check that the default QSurfaceFormat OpenGL profile is compatible with the global OpenGL
// shared context profile, otherwise this could lead to a nasty crash.
QSurfaceFormat sharedFormat = qt_gl_global_share_context()->format();
QSurfaceFormat defaultFormat = QSurfaceFormat::defaultFormat();
if (defaultFormat.profile() != sharedFormat.profile()
&& defaultFormat.profile() == QSurfaceFormat::CoreProfile
&& defaultFormat.version() >= qMakePair(3, 2)) {
qFatal("QWebEngine: Default QSurfaceFormat OpenGL profile is not compatible with the "
"global shared context OpenGL profile. Please make sure you set a compatible "
"QSurfaceFormat before the QtGui application instance is created.");
}
#endif
#endif // QT_CONFIG(opengl)
}
bool closingDown()
{
return WebEngineContext::closingDown();
}
} // namespace QtWebEngineCore
#if defined(Q_OS_WIN)
namespace QtWebEngineSandbox {
sandbox::SandboxInterfaceInfo *staticSandboxInterfaceInfo(sandbox::SandboxInterfaceInfo *info)
{
static sandbox::SandboxInterfaceInfo *g_info = nullptr;
if (info) {
Q_ASSERT(g_info == nullptr);
g_info = info;
}
return g_info;
}
} //namespace
#endif
static void initialize()
{
#if QT_CONFIG(opengl)
if (QCoreApplication::instance()) {
// On window/ANGLE, calling QtWebEngineQuick::initialize from DllMain will result in a crash.
if (!qt_gl_global_share_context()) {
qWarning("Qt WebEngine seems to be initialized from a plugin. Please "
"set Qt::AA_ShareOpenGLContexts using QCoreApplication::setAttribute and "
"QSGRendererInterface::OpenGLRhi using QQuickWindow::setGraphicsApi "
"before constructing QGuiApplication.");
}
return;
}
// QCoreApplication is not yet instantiated, ensuring the call will be deferred
qAddPreRoutine(QtWebEngineCore::initialize);
QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGLRhi);
#endif // QT_CONFIG(opengl)
}
Q_CONSTRUCTOR_FUNCTION(initialize)
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