Merge branch '4.8' of scm.dev.nokia.troll.no:qt/qt

Conflicts:
	doc/src/declarative/righttoleft.qdoc
	examples/draganddrop/fridgemagnets/main.cpp
	examples/script/context2d/main.cpp

1 files changed, 2 insertions, 0 deletions

diff --git a/src/opengl/qgl_qpa.cpp b/src/opengl/qgl_qpa.cpp
index bc36ced179..9ba8b75362 100644
--- a/src/opengl/qgl_qpa.cpp
+++ b/src/opengl/qgl_qpa.cpp
@@ -156,6 +156,8 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
             if (shareContext) {
                 winFormat.setSharedContext(shareContext->d_func()->platformContext);
             }
+            if (widget->testAttribute(Qt::WA_TranslucentBackground))
+                winFormat.setAlpha(true);
             winFormat.setWindowApi(QPlatformWindowFormat::OpenGL);
             winFormat.setWindowSurface(false);
             widget->setPlatformWindowFormat(winFormat);