diff options
Diffstat (limited to 'src/platformsupport/graphics/qrasterbackingstore.cpp')
| -rw-r--r-- | src/platformsupport/graphics/qrasterbackingstore.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/platformsupport/graphics/qrasterbackingstore.cpp b/src/platformsupport/graphics/qrasterbackingstore.cpp index 325c98b93d..ef26edc494 100644 --- a/src/platformsupport/graphics/qrasterbackingstore.cpp +++ b/src/platformsupport/graphics/qrasterbackingstore.cpp @@ -39,6 +39,7 @@ #include "qrasterbackingstore_p.h" +#include <QtGui/qbackingstore.h> #include <QtGui/qpainter.h> QT_BEGIN_NAMESPACE @@ -104,6 +105,10 @@ bool QRasterBackingStore::scroll(const QRegion ®ion, int dx, int dy) void QRasterBackingStore::beginPaint(const QRegion ®ion) { + // Keep backing store device pixel ratio in sync with window + if (m_image.devicePixelRatio() != window()->devicePixelRatio()) + resize(backingStore()->size(), backingStore()->staticContents()); + if (!m_image.hasAlphaChannel()) return; |