When AA_ShareOpenGLContexts is not set, docking or undocking
will lead to changing the associated top-level window. This
leads to changing the OpenGL context, and tearing down and
then recreating all OpenGL resources (assuming a well written
application). The problem is, there are no paint events after
the Show, meaning the user code's paintGL is often not invoked,
which leads to showing an empty QOpenGLWidget until something
else triggers a paint event. To remedy this, send a paint event
upon Show, which should be harmless enough, while fixing the
case of docking/undocking.
Pick-to: 6.0 5.15
Fixes: QTBUG-89812
Change-Id: I3c4560f8f069d86645a6314bf7ad1b4ee8e2c716
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
Fix warning about requestedFormat not being initialized in sequence.
Change-Id: I7b948cb356b65ea2953424a700eb1a70cd1802f9
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Static builds can not rely on a constructor function in the QtOpenGL
library, as that will be linked out unless something in the application
pulls it in.
Instead we export a helper function that clients that depend on
OpenGL support in QPlatformBackingStore can use to bring it it.
Change-Id: Ic54058bf413a476287884c78df5624b862f97695
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
QGLWidget doesn't exist any more, and has been legacy for a long time, so we
shouldn't try to explain what QOpenGLWidget is in terms of QGLWidget any more.
Task-number: QTBUG-74409
Change-Id: I87ff6c35dfed1303bd6d74621b244e1ed84ceafe
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
Same pattern as QtQuickWidgets. Gets rid of QtOpenGL's dependency on QtWidgets.
Task-number: QTBUG-74409
Change-Id: I4f9b55c23e25a1e0519734037b768a16e870c7d2
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Laszlo Agocs
Volker Hilsheimer
Morten Johan Sørvig
Tor Arne Vestbø
Paul Wicking
Johan Klokkhammer Helsing