qsgsoftwareadaptation.cpp

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// 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 "qsgsoftwareadaptation_p.h"
#include "qsgsoftwarecontext_p.h"
#include "qsgsoftwarerenderloop_p.h"
#include "qsgsoftwarethreadedrenderloop_p.h"
 
#include <private/qguiapplication_p.h>
#include <qpa/qplatformintegration.h>
 
QT_BEGIN_NAMESPACE
 
QSGSoftwareAdaptation::QSGSoftwareAdaptation(QObject *parent)
    : QSGContextPlugin(parent)
{
}
 
QStringList QSGSoftwareAdaptation::keys() const
{
    return QStringList() << QLatin1String("software") << QLatin1String("softwarecontext");
}
 
QSGContext *QSGSoftwareAdaptation::create(const QString &) const
{
    if (!instance)
        instance = new QSGSoftwareContext();
    return instance;
}
 
QSGContextFactoryInterface::Flags QSGSoftwareAdaptation::flags(const QString &) const
{
    // Claim we support adaptable shader effects, then return null for the
    // shader effect node. The result is shader effects not being rendered,
    // with the application working fine in all other respects.
    return QSGContextFactoryInterface::SupportsShaderEffectNode;
}
 
QSGRenderLoop *QSGSoftwareAdaptation::createWindowManager()
{
#if QT_CONFIG(thread)
    static bool threaded = false;
    static bool envChecked = false;
    if (!envChecked) {
        envChecked = true;
        threaded = qgetenv("QSG_RENDER_LOOP") == "threaded";
    }
 
    if (threaded)
        return new QSGSoftwareThreadedRenderLoop;
#endif
 
    return new QSGSoftwareRenderLoop();
}
 
QSGSoftwareContext *QSGSoftwareAdaptation::instance = nullptr;
 
QT_END_NAMESPACE