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| author | Samuel Rødal <sroedal@trolltech.com> | 2009-05-05 13:31:10 (GMT) |
|---|---|---|
| committer | Samuel Rødal <sroedal@trolltech.com> | 2009-05-05 13:42:21 (GMT) |
| commit | d89d1eb47e69c2c2dc1121ef92fd08ef983e3e63 (patch) | |
| tree | 3b09d34e6f0a0ae2418691df7bac3e1c8a6037cb /src/gui/painting | |
| parent | 2a1eed4c718c8fa4a69351691aa466339d280126 (diff) | |
| download | Qt-d89d1eb47e69c2c2dc1121ef92fd08ef983e3e63.zip Qt-d89d1eb47e69c2c2dc1121ef92fd08ef983e3e63.tar.gz Qt-d89d1eb47e69c2c2dc1121ef92fd08ef983e3e63.tar.bz2 | |
Fixed bug where 0-opacity would cause images to be drawn fully opaque.
The bug appears in the raster paint engine and only in release mode as
the cause of the bug is in the MMX and SSE blend functions which are
disabled in debug. To prevent it simply we return early if we detect
that we have an opacity of 0.
Reviewed-by: Trond
Diffstat (limited to 'src/gui/painting')
| -rw-r--r-- | src/gui/painting/qpaintengine_raster.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gui/painting/qpaintengine_raster.cpp b/src/gui/painting/qpaintengine_raster.cpp index ba1e27c..e249b3e 100644 --- a/src/gui/painting/qpaintengine_raster.cpp +++ b/src/gui/painting/qpaintengine_raster.cpp @@ -1022,7 +1022,7 @@ void QRasterPaintEnginePrivate::drawImage(const QPointF &pt, int alpha, const QRect &sr) { - if (!clip.isValid()) + if (alpha == 0 || !clip.isValid()) return; Q_ASSERT(img.depth() >= 8); |