qt5base-lts/tests/benchmarks/gui/painting/qtracebench/tst_qtracebench.cpp
Sergio Ahumada 48e0c4df23 Update copyright year in Digia's license headers
Change-Id: Ic804938fc352291d011800d21e549c10acac66fb
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
2013-01-18 09:07:35 +01:00

262 lines
7.6 KiB
C++

/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the test suite 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qtest.h>
#include <QtGui>
#include <private/qpaintengineex_p.h>
#include <private/qpaintbuffer_p.h>
class ReplayWidget : public QWidget
{
Q_OBJECT
public:
ReplayWidget(const QString &filename);
void paintEvent(QPaintEvent *event);
void resizeEvent(QResizeEvent *event);
bool done() const { return m_done; }
qreal result() const { return m_result; }
public slots:
void updateRect();
public:
QList<QRegion> updates;
QPaintBuffer buffer;
int currentFrame;
int currentIteration;
QTime timer;
QList<uint> visibleUpdates;
QList<uint> iterationTimes;
QString filename;
bool m_done;
qreal m_result;
uint m_total;
};
void ReplayWidget::updateRect()
{
if (!visibleUpdates.isEmpty())
update(updates.at(visibleUpdates.at(currentFrame)));
}
void ReplayWidget::paintEvent(QPaintEvent *)
{
if (m_done)
return;
QPainter p(this);
// if partial updates don't work
// p.setClipRegion(frames.at(currentFrame).updateRegion);
buffer.draw(&p, visibleUpdates.at(currentFrame));
++currentFrame;
if (currentFrame >= visibleUpdates.size()) {
currentFrame = 0;
++currentIteration;
uint currentElapsed = timer.isNull() ? 0 : timer.elapsed();
timer.restart();
m_total += currentElapsed;
// warm up for at most 5 iterations or half a second
if (currentIteration >= 5 || m_total >= 500) {
iterationTimes << currentElapsed;
if (iterationTimes.size() >= 5) {
qreal mean = 0;
qreal stddev = 0;
uint min = INT_MAX;
for (int i = 0; i < iterationTimes.size(); ++i) {
mean += iterationTimes.at(i);
min = qMin(min, iterationTimes.at(i));
}
mean /= qreal(iterationTimes.size());
for (int i = 0; i < iterationTimes.size(); ++i) {
qreal delta = iterationTimes.at(i) - mean;
stddev += delta * delta;
}
stddev = qSqrt(stddev / iterationTimes.size());
qSort(iterationTimes.begin(), iterationTimes.end());
uint median = iterationTimes.at(iterationTimes.size() / 2);
stddev = 100 * stddev / mean;
// do 100 iterations, break earlier if we spend more than 5 seconds or have a low std deviation after 2 seconds
if (iterationTimes.size() >= 100 || m_total >= 5000 || (m_total >= 2000 && stddev < 4)) {
printf("%s, iterations: %d, frames: %d, min(ms): %d, median(ms): %d, stddev: %f %%, max(fps): %f\n", qPrintable(filename),
iterationTimes.size(), visibleUpdates.size(), min, median, stddev, 1000. * visibleUpdates.size() / min);
m_result = min;
m_done = true;
return;
}
}
}
}
}
void ReplayWidget::resizeEvent(QResizeEvent * /* event */)
{
visibleUpdates.clear();
QRect bounds = rect();
for (int i = 0; i < updates.size(); ++i) {
if (updates.at(i).intersects(bounds))
visibleUpdates << i;
}
if (visibleUpdates.size() != updates.size())
printf("Warning: skipped %d frames due to limited resolution\n", updates.size() - visibleUpdates.size());
}
ReplayWidget::ReplayWidget(const QString &filename_)
: currentFrame(0)
, currentIteration(0)
, filename(filename_)
, m_done(false)
, m_result(0)
, m_total(0)
{
setWindowTitle(filename);
QFile file(filename);
if (!file.open(QIODevice::ReadOnly)) {
printf("Failed to load input file '%s'\n", qPrintable(filename_));
return;
}
QDataStream in(&file);
in.setVersion(QDataStream::Qt_4_7);
char *data;
uint size;
in.readBytes(data, size);
bool isTraceFile = size >= 7 && qstrncmp(data, "qttrace", 7) == 0;
uint version = 0;
if (size == 9 && qstrncmp(data, "qttraceV2", 9) == 0) {
in.setFloatingPointPrecision(QDataStream::SinglePrecision);
in >> version;
}
delete [] data;
if (!isTraceFile) {
printf("File '%s' is not a trace file\n", qPrintable(filename_));
return;
}
in >> buffer >> updates;
resize(buffer.boundingRect().size().toSize());
setAutoFillBackground(false);
setAttribute(Qt::WA_NoSystemBackground);
}
class tst_QTraceBench : public QObject
{
Q_OBJECT
private slots:
void trace();
void trace_data();
};
static const QLatin1String prefix(":/traces/");
void tst_QTraceBench::trace_data()
{
QTest::addColumn<QString>("filename");
QTest::newRow("basicdrawing") << (prefix + "basicdrawing.trace");
QTest::newRow("webkit") << (prefix + "webkit.trace");
QTest::newRow("creator") << (prefix + "creator.trace");
QTest::newRow("textedit") << (prefix + "textedit.trace");
QTest::newRow("qmlphoneconcept") << (prefix + "qmlphoneconcept.trace");
QTest::newRow("qmlsamegame") << (prefix + "qmlsamegame.trace");
}
void tst_QTraceBench::trace()
{
QFETCH(QString, filename);
QFile file(filename);
if (!file.exists()) {
qWarning() << "Missing file" << filename;
return;
}
ReplayWidget widget(filename);
if (widget.updates.isEmpty()) {
qWarning() << "No trace updates" << filename;
return;
}
widget.show();
QTest::qWaitForWindowShown(&widget);
while (!widget.done()) {
widget.updateRect();
QApplication::processEvents();
}
QTest::setBenchmarkResult(widget.result(), QTest::WalltimeMilliseconds);
}
QTEST_MAIN(tst_QTraceBench)
#include "tst_qtracebench.moc"