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// Copyright (C) 2015 Paul Lemire
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <QtTest/QTest>
#include <QSemaphore>
#include <QThread>
#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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