From d482805856a83f39fdab32c76f10cf7d7d5e2112 Mon Sep 17 00:00:00 2001 From: Laszlo Agocs Date: Thu, 4 Feb 2016 10:15:59 +0100 Subject: Do not change depth for the backingstore's underlying image The depth cannot change. This means that RGB16 cannot be upgraded to 8565 for example as that would be a 24 bit format whereas the backingstores and the underlying platform may expect a 16 bit format. Task-number: QTBUG-50869 Change-Id: I648b39287d43a80fae8097a33bbf3b8bbdcb8816 Reviewed-by: Friedemann Kleint Reviewed-by: Andreas Holzammer Reviewed-by: Allan Sandfeld Jensen --- src/gui/image/qimage_p.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'src/gui/image/qimage_p.h') diff --git a/src/gui/image/qimage_p.h b/src/gui/image/qimage_p.h index f9ad6c0ac0..0c0653e8ab 100644 --- a/src/gui/image/qimage_p.h +++ b/src/gui/image/qimage_p.h @@ -189,6 +189,12 @@ inline QImage::Format qt_alphaVersion(QImage::Format format) return QImage::Format_ARGB32_Premultiplied; } +inline QImage::Format qt_maybeAlphaVersionWithSameDepth(QImage::Format format) +{ + const QImage::Format toFormat = qt_alphaVersion(format); + return qt_depthForFormat(format) == qt_depthForFormat(toFormat) ? toFormat : format; +} + inline QImage::Format qt_alphaVersionForPainting(QImage::Format format) { QImage::Format toFormat = qt_alphaVersion(format); -- cgit v1.2.3