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| author | Laszlo Agocs <laszlo.p.agocs@nokia.com> | 2011-06-15 15:27:55 (GMT) |
|---|---|---|
| committer | Laszlo Agocs <laszlo.p.agocs@nokia.com> | 2011-06-16 08:15:03 (GMT) |
| commit | 6afe7a233e66f0cae803590d536b4d379b7c1625 (patch) | |
| tree | 9885124e37367b7fb2ec967db3c4c4fbdfdcab07 /src/gui/image/qvolatileimage_p.h | |
| parent | 5e35452ad8420886f54df89d19205acb88ebb363 (diff) | |
| download | Qt-6afe7a233e66f0cae803590d536b4d379b7c1625.zip Qt-6afe7a233e66f0cae803590d536b4d379b7c1625.tar.gz Qt-6afe7a233e66f0cae803590d536b4d379b7c1625.tar.bz2 | |
Handle QVolatileImage-backed pixmaps optimally in drawPixmap().
When drawing such pixmaps (used by both the openvg and opengl graphics
systems) onto another pixmap or to a QImage, the performance was
sub-optimal due to missing and accidentally disabled support
specific to QVolatileImage. This is now fixed and drawing pixmaps into
a QImage is also made optimal by using the QS60PaintEngine for
QImage too. This will cause a 5-7x (or even up to 12x on certain
hardware and platform) increase in offscreen pixmap drawing
performance.
Task-number: QTBUG-19880
Reviewed-by: Jani Hautakangas
Diffstat (limited to 'src/gui/image/qvolatileimage_p.h')
| -rw-r--r-- | src/gui/image/qvolatileimage_p.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/gui/image/qvolatileimage_p.h b/src/gui/image/qvolatileimage_p.h index 97d6ea6..bed2e91 100644 --- a/src/gui/image/qvolatileimage_p.h +++ b/src/gui/image/qvolatileimage_p.h @@ -87,6 +87,7 @@ public: bool ensureFormat(QImage::Format format); QImage toImage() const; QImage &imageRef(); + const QImage &constImageRef() const; QPaintEngine *paintEngine(); void setAlphaChannel(const QPixmap &alphaChannel); void fill(uint pixelValue); |