diff options
Diffstat (limited to 'src/gui/painting/qdrawhelper.cpp')
| -rw-r--r-- | src/gui/painting/qdrawhelper.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp index 5207e861e6..5ec570a5db 100644 --- a/src/gui/painting/qdrawhelper.cpp +++ b/src/gui/painting/qdrawhelper.cpp @@ -5572,6 +5572,8 @@ static void qt_alphamapblit_generic(QRasterBuffer *rasterBuffer, int start = qMax<int>(x, clip.x); int end = qMin<int>(x + mapWidth, clip.x + clip.len); + if (end <= start) + continue; Q_ASSERT(end - start <= buffer_size); QRgba64 *dest = destFetch64((QRgba64*)buffer, rasterBuffer, start, clip.y, end - start); @@ -5845,6 +5847,8 @@ static void qt_alphargbblit_generic(QRasterBuffer *rasterBuffer, int start = qMax<int>(x, clip.x); int end = qMin<int>(x + mapWidth, clip.x + clip.len); + if (end <= start) + continue; Q_ASSERT(end - start <= buffer_size); QRgba64 *dest = destFetch64((QRgba64*)buffer, rasterBuffer, start, clip.y, end - start); |