In fact I derived my application from the MFC exemple but with a
compositeViewer in place of single Viewer, and when I receive a NEW_WINDOW
event in my CView::OnInitialUpdate() I add a new view to the composite
viewer. It avoids to launch 2 times
mThreadHandle = (HANDLE)_beginthread(&cOSG::Render, 0, mOSG);
in MFC example and to have 2 single viewer.
So in my app, when I add a new view, i create a new osgViewer::View with
it's own GraphicsContext with a
osgViewer::graphicsWindowWin32::WindowData(hWnd); and add it to the
composite viewer.
2008/6/23 Robert Osfield <[EMAIL PROTECTED]>:
> Hi Alex,
>
> Does the new View share an existing graphics context, or does it have
> a new graphics context?
>
> Robert.
>
> On Mon, Jun 23, 2008 at 11:05 AM, amalric alexandre
> <[EMAIL PROTECTED]> wrote:
> > The problem is that if I do not add those lines :
> >
> > osgViewer::CompositeViewer::Windows windows;
> > m_rpCompoViewer->getWindows(windows);
> > // clear out all the previously assigned operations
> > for(osgViewer::CompositeViewer::Windows::iterator citr =
> > windows.begin();citr != windows.end();++citr)
> > {
> > if(!((*citr)->isRealizedImplementation()))
> > {
> >
> > (*citr)->realizeImplementation();
> > }
> > }
> >
> > after calling addView (for the second view I add) it crashes in
> >
> > osg::getGLVersionNumber()
> >
> > at
> >
> >
> > std::string vs( versionstring );
> >
> >
> >
> > because versionstring is NULL
> >
> > Adding those lines seems to resolve the problem.
> > Kind regards,
> > 2008/6/23 Robert Osfield <[EMAIL PROTECTED]>:
> >>
> >> Hi Alex,
> >>
> >> What we might have to do is extended the addView method so it handles
> >> situations like your more seemlessly, i.e. do the realize etc,
> >> however, one has to be careful about this as often you'll add views
> >> well before you actually want them to realize. Perhaps the best thing
> >> would to some kind of dirty mechanism that fires off a realize etc on
> >> the next frame. Just to be clear, it's the lack of realize on new
> >> windows you've added that is the problem?
> >>
> >> Robert.
> >>
> >>
> >> On Mon, Jun 23, 2008 at 10:48 AM, amalric alexandre
> >> <[EMAIL PROTECTED]> wrote:
> >> >
> >> > Hi robert,
> >> >
> >> > My composite viewer is set as :
> >> >
> >> > m_rpCompoViewer = new osgViewer::CompositeViewer;
> >> > m_rpCompoViewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);
> >> >
> >> > I've found a osg message "[osg-users] Adding Views to a Running
> >> > CompositeViewer" wich talks about the same problem as I have.
> >> >
> >> > I've juste added the code below after calling :
> >> > m_rpCompoViewer->addView(rpView.get());
> >> >
> >> > osgViewer::CompositeViewer::Windows windows;
> >> > m_rpCompoViewer->getWindows(windows);
> >> > // clear out all the previously assigned operations
> >> > for(osgViewer::CompositeViewer::Windows::iterator citr =
> >> > windows.begin();citr != windows.end();++citr)
> >> > {
> >> > if(!((*citr)->isRealizedImplementation()))
> >> > {
> >> > (*citr)->realizeImplementation();
> >> > }
> >> > }
> >> >
> >> > and everything works fine.
> >> >
> >> >
> >> > 2008/6/23 Robert Osfield <[EMAIL PROTECTED]>:
> >> >>
> >> >> HI Alex,
> >> >>
> >> >> I can't work out exactly what you mean w.r.t your setup. What
> >> >> threading model is the viewer set up as?
> >> >>
> >> >> W.r.t SingleThreaded not setting the _threadsRunning flag... well, if
> >> >> it's single threaded then no extra threads will be running, so the
> >> >> code is perfectly correct.
> >> >>
> >> >> Also if you report a crash, please make sure you provide a stack
> trace
> >> >> as this is essential for others to be able to help look for the cause
> >> >> of the problem.
> >> >>
> >> >> Robert.
> >> >>
> >> >> On Mon, Jun 23, 2008 at 10:30 AM, amalric alexandre
> >> >> <[EMAIL PROTECTED]> wrote:
> >> >> > Hi osg-users,
> >> >> >
> >> >> > I maybe found a bug on CompositeViewer::addView(osgViewer::View*
> >> >> > view)
> >> >> > in
> >> >> > OSG 2.5.2.
> >> >> >
> >> >> > I have an application wich add and remove views on a
> compositeViewer
> >> >> > embedded in MFC windows. When I try to add a new view it crashes.
> >> >> >
> >> >> > With debug information I've noticed that in addView function
> >> >> > _threadsRunning
> >> >> > variable was always false, so that stopThreading is never called.
> >> >> >
> >> >> > I've searched why _threadsRunning was false and I've found that in
> >> >> > ViewerBase::startThreading(), _threadsRunning is never set to true
> >> >> > because
> >> >> > we return before at line 269 in case we're SingleThreaded,
> otherwise
> >> >> > if
> >> >> > we're CullDrawThreadPerContext for example we just break but we
> don't
> >> >> > return. Is it normal ?
> >> >> >
> >> >> > Kind Regards,
> >> >> > _______________________________________________
> >> >> > osg-users mailing list
> >> >> > osg-users@lists.openscenegraph.org
> >> >> >
> >> >> >
> >> >> >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >> >> >
> >> >> >
> >> >> _______________________________________________
> >> >> osg-users mailing list
> >> >> osg-users@lists.openscenegraph.org
> >> >>
> >> >>
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >> >
> >> > new osgViewer::CompositeViewer;
> >> > _______________________________________________
> >> > osg-users mailing list
> >> > osg-users@lists.openscenegraph.org
> >> >
> >> >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >> >
> >> >
> >> _______________________________________________
> >> osg-users mailing list
> >> osg-users@lists.openscenegraph.org
> >>
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >
> >
> > _______________________________________________
> > osg-users mailing list
> > osg-users@lists.openscenegraph.org
> >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >
> >
> _______________________________________________
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>
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