diff options
author | Samuel Rødal <samuel.rodal@nokia.com> | 2011-04-13 10:15:06 +0200 |
---|---|---|
committer | Olivier Goffart <olivier.goffart@nokia.com> | 2011-05-10 12:54:45 +0200 |
commit | e05443367f60e591556ae8854ecb634a7cf6ea33 (patch) | |
tree | dbc1a06cb4d7e76f25c0b1ca6f7d79ea7daf4f5e /tests/auto | |
parent | db5803959182f891259b457b5bac2ed54785b709 (diff) |
Improved gradient table generation performance for two-stop gradients.
Two stops is a fairly common case so we gain quite a bit by special
casing it. Improves performance by 10 % in parcycle benchmark, and
by 90 % in a synthetic benchmark.
Reviewed-by: Andreas Kling
(cherry picked from commit 5b74a70ac630073582be56f8a0539624a1080185)
Diffstat (limited to 'tests/auto')
-rw-r--r-- | tests/auto/qpainter/tst_qpainter.cpp | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/tests/auto/qpainter/tst_qpainter.cpp b/tests/auto/qpainter/tst_qpainter.cpp index c21514b9c6..fa80635cdc 100644 --- a/tests/auto/qpainter/tst_qpainter.cpp +++ b/tests/auto/qpainter/tst_qpainter.cpp @@ -77,6 +77,7 @@ # define SRCDIR "." #endif +Q_DECLARE_METATYPE(QGradientStops) Q_DECLARE_METATYPE(QLine) Q_DECLARE_METATYPE(QRect) Q_DECLARE_METATYPE(QSize) @@ -189,6 +190,7 @@ private slots: void fillRect_stretchToDeviceMode(); void monoImages(); + void linearGradientSymmetry_data(); void linearGradientSymmetry(); void gradientInterpolation(); @@ -3983,8 +3985,39 @@ static QLinearGradient inverseGradient(QLinearGradient g) return g2; } +void tst_QPainter::linearGradientSymmetry_data() +{ + QTest::addColumn<QGradientStops>("stops"); + + { + QGradientStops stops; + stops << qMakePair(qreal(0.0), QColor(Qt::blue)); + stops << qMakePair(qreal(0.2), QColor(220, 220, 220, 0)); + stops << qMakePair(qreal(0.6), QColor(Qt::red)); + stops << qMakePair(qreal(0.9), QColor(220, 220, 220, 255)); + stops << qMakePair(qreal(1.0), QColor(Qt::black)); + QTest::newRow("multiple stops") << stops; + } + + { + QGradientStops stops; + stops << qMakePair(qreal(0.0), QColor(Qt::blue)); + stops << qMakePair(qreal(1.0), QColor(Qt::black)); + QTest::newRow("two stops") << stops; + } + + { + QGradientStops stops; + stops << qMakePair(qreal(0.3), QColor(Qt::blue)); + stops << qMakePair(qreal(0.6), QColor(Qt::black)); + QTest::newRow("two stops 2") << stops; + } +} + void tst_QPainter::linearGradientSymmetry() { + QFETCH(QGradientStops, stops); + QImage a(64, 8, QImage::Format_ARGB32_Premultiplied); QImage b(64, 8, QImage::Format_ARGB32_Premultiplied); @@ -3992,11 +4025,7 @@ void tst_QPainter::linearGradientSymmetry() b.fill(0); QLinearGradient gradient(QRectF(b.rect()).topLeft(), QRectF(b.rect()).topRight()); - gradient.setColorAt(0.0, Qt::blue); - gradient.setColorAt(0.2, QColor(220, 220, 220, 0)); - gradient.setColorAt(0.6, Qt::red); - gradient.setColorAt(0.9, QColor(220, 220, 220, 255)); - gradient.setColorAt(1.0, Qt::black); + gradient.setStops(stops); QPainter pa(&a); pa.fillRect(a.rect(), gradient); |