Added trace replayer benchmark.

Now we can easily add trace files generated with -graphicssystem
trace for
benchmarking on all relevant platforms.

Reviewed-by: Gunnar Sletta

8 files changed, 275 insertions, 1 deletions

diff --git a/tests/benchmarks/gui/painting/painting.pro b/tests/benchmarks/gui/painting/painting.pro
index 878567d..2c042b5 100644
--- a/tests/benchmarks/gui/painting/painting.pro
+++ b/tests/benchmarks/gui/painting/painting.pro
@@ -2,4 +2,5 @@ TEMPLATE = subdirs
 SUBDIRS = \
         qpainter \
         qregion \
-        qtransform
+        qtransform \
+        qtracebench
diff --git a/tests/benchmarks/gui/painting/qtracebench/qtracebench.pro b/tests/benchmarks/gui/painting/qtracebench/qtracebench.pro
new file mode 100644
index 0000000..56ec8bb
--- /dev/null
+++ b/tests/benchmarks/gui/painting/qtracebench/qtracebench.pro
@@ -0,0 +1,10 @@
+load(qttest_p4)
+TEMPLATE = app
+TARGET = tst_qtracebench
+
+INCLUDEPATH += . $$QT_SOURCE_TREE/src/3rdparty/harfbuzz/src
+
+RESOURCES += qtracebench.qrc
+
+SOURCES += tst_qtracebench.cpp
+
diff --git a/tests/benchmarks/gui/painting/qtracebench/qtracebench.qrc b/tests/benchmarks/gui/painting/qtracebench/qtracebench.qrc
new file mode 100644
index 0000000..cea0e2f
--- /dev/null
+++ b/tests/benchmarks/gui/painting/qtracebench/qtracebench.qrc
@@ -0,0 +1,8 @@
+<RCC>
+    <qresource>
+        <file>traces/basicdrawing.trace</file>
+        <file>traces/webkit.trace</file>
+        <file>traces/textedit.trace</file>
+        <file>traces/creator.trace</file>
+    </qresource>
+</RCC>
diff --git a/tests/benchmarks/gui/painting/qtracebench/traces/basicdrawing.trace b/tests/benchmarks/gui/painting/qtracebench/traces/basicdrawing.trace
new file mode 100644
index 0000000..0241d08
--- /dev/null
+++ b/tests/benchmarks/gui/painting/qtracebench/traces/basicdrawing.trace
diff --git a/tests/benchmarks/gui/painting/qtracebench/traces/creator.trace b/tests/benchmarks/gui/painting/qtracebench/traces/creator.trace
new file mode 100644
index 0000000..55ee9e1
--- /dev/null
+++ b/tests/benchmarks/gui/painting/qtracebench/traces/creator.trace
diff --git a/tests/benchmarks/gui/painting/qtracebench/traces/textedit.trace b/tests/benchmarks/gui/painting/qtracebench/traces/textedit.trace
new file mode 100644
index 0000000..998716d
--- /dev/null
+++ b/tests/benchmarks/gui/painting/qtracebench/traces/textedit.trace
diff --git a/tests/benchmarks/gui/painting/qtracebench/traces/webkit.trace b/tests/benchmarks/gui/painting/qtracebench/traces/webkit.trace
new file mode 100644
index 0000000..43e752d
--- /dev/null
+++ b/tests/benchmarks/gui/painting/qtracebench/traces/webkit.trace
diff --git a/tests/benchmarks/gui/painting/qtracebench/tst_qtracebench.cpp b/tests/benchmarks/gui/painting/qtracebench/tst_qtracebench.cpp
new file mode 100644
index 0000000..c3afffa
--- /dev/null
+++ b/tests/benchmarks/gui/painting/qtracebench/tst_qtracebench.cpp
@@ -0,0 +1,255 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qtest.h>
+
+#include <QtGui>
+
+#include <private/qpaintengineex_p.h>
+#include <private/qpaintbuffer_p.h>
+
+//TESTED_FILES=
+
+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);
+
+    char *data;
+    uint size;
+    in.readBytes(data, size);
+    bool isTraceFile = size == 7 && qstrncmp(data, "qttrace", 7) == 0;
+    delete [] data;
+    if (!isTraceFile) {
+        printf("File '%s' is not a trace file\n", qPrintable(filename_));
+        return;
+    }
+
+    in >> buffer >> updates;
+    printf("Read paint buffer with %d frames\n", buffer.numFrames());
+
+    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");
+}
+
+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"