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/****************************************************************************
**
** Copyright (C) 2015 Paul Lemire
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** 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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <Qt3DRender/private/vsyncframeadvanceservice_p.h>
class FakeRenderThread final : public QThread
{
public:
FakeRenderThread(Qt3DRender::Render::VSyncFrameAdvanceService *tickService)
: m_tickService(tickService)
, m_running(1)
, m_submitCount(0)
{
}
int submitCount() const { return m_submitCount; }
void stopRunning()
{
m_running.fetchAndStoreOrdered(0);
m_submitSemaphore.release(1);
}
void enqueueRenderView()
{
m_submitSemaphore.release(1);
}
protected:
// QThread interface
void run() final
{
m_tickService->proceedToNextFrame();
while (true) {
if (!isReadyToSubmit())
break;
++m_submitCount;
m_tickService->proceedToNextFrame();
}
}
private:
bool isReadyToSubmit()
{
m_submitSemaphore.acquire(1);
return m_running.loadRelaxed() == 1;
}
Qt3DRender::Render::VSyncFrameAdvanceService *m_tickService;
QAtomicInt m_running;
QSemaphore m_submitSemaphore;
int m_submitCount;
};
class tst_VSyncFrameAdvanceService : public QObject
{
Q_OBJECT
private Q_SLOTS:
void checkSynchronisation()
{
// GIVEN
Qt3DRender::Render::VSyncFrameAdvanceService tickService(true);
FakeRenderThread renderThread(&tickService);
// WHEN
renderThread.start();
for (int i = 0; i < 10; ++i) {
tickService.waitForNextFrame();
renderThread.enqueueRenderView();
}
tickService.waitForNextFrame();
renderThread.stopRunning();
renderThread.wait();
// THEN
QCOMPARE(renderThread.submitCount(), 10);
}
};
QTEST_MAIN(tst_VSyncFrameAdvanceService)
#include "tst_vsyncframeadvanceservice.moc"
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