Clear backingstore for windows with alpha channel.
authorFriedemann Kleint <Friedemann.Kleint@digia.com>
Thu, 10 Jan 2013 14:33:51 +0000 (15:33 +0100)
committerThe Qt Project <gerrit-noreply@qt-project.org>
Fri, 11 Jan 2013 08:03:59 +0000 (09:03 +0100)
commitc95b0982d5466069de3ac491ce3cbf9337060e3d
tree8c5d91d5c404a8f94ba0d43b54823f0191187320
parentffd912a51d2230a0d9d40b271a7e7f94f93b5e4e
Clear backingstore for windows with alpha channel.

Fixes painting artifacts in translucent windows.

Task-number: QTBUG-28531

Change-Id: I00a7a86f88a40d356fa3e37bd497a288b2118469
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>
src/plugins/platforms/windows/qwindowsbackingstore.cpp
src/plugins/platforms/xcb/qxcbbackingstore.cpp