BTW, is there a reason why you aren't just using a single context and a FBO RTT Camera?
On 9/11/07, Robert Osfield <[EMAIL PROTECTED]> wrote: > Hi John, > > I can only guess that you first need to realize the window before you > can share it. > > For an example of sharing contexts see src/osg/GraphicsContext.cpp and > look for the createCompileContext() code segment. > > Robert. > > On 9/11/07, John Donovan <[EMAIL PROTECTED]> wrote: > > > > Robert Osfield wrote: > > > If you wish to reuse texture objects generated by one context then you > > > need to share the various contexts with each other. You can set this > > > via the GraphicsContext::Traits::sharedContext variable. > > > > > > Ah! OK, that makes sense. But I am having problems with it... > > I have the following: > > ref_ptr<GraphicsContext::Traits> traits_rtt = new GraphicsContext::Traits; > > traits_rtt->x = 500; > > traits_rtt->y = 880; > > traits_rtt->width = totalWidth; > > traits_rtt->height = vpHeight; > > traits_rtt->windowDecoration = false; > > traits_rtt->doubleBuffer = true; > > traits_rtt->sharedContext = 0; > > ref_ptr<GraphicsContext> gc_rtt = > > GraphicsContext::createGraphicsContext(traits_rtt.get()); > > > > ref_ptr<GraphicsContext::Traits> traits_view = new GraphicsContext::Traits; > > traits_view->x = 500; > > traits_view->y = 800; > > traits_view->width = totalWidth; > > traits_view->height = vpHeight; > > traits_view->windowDecoration = true; > > traits_view->doubleBuffer = true; > > traits_view->sharedContext = gc_rtt.get(); > > ref_ptr<GraphicsContext> gc_view = > > GraphicsContext::createGraphicsContext(traits_view.get()); > > > > Then I have a viewer with a camera rendering to a texture, and a viewer > > rendering a textured quad to a window. > > But when I call Viewer::frame() on the viewer that renders to the window, I > > get > > the following error messages: > > > > Windows Error #170: [Screen #0] > > GraphicsWindowWin32::realizeImplementation() - > > Unable to share OpenGL context. Reason: The requested resource is in use. > > > > Error: [Screen #0] GraphicsWindowWin32::makeCurrentImplementation() - Window > > not realized; cannot do makeCurrent. > > > > Are there any examples I can work off? I've tried a search for > > sharedContext in > > the OSG project, but I just get the implementation code, not any example > > code. > > Incidentally, I've upgraded to 2.1.9 without a hitch. > > > > -J > > > > > > > > ______________________________________________________________________ > > This email has been scanned by the MessageLabs Email Security System. > > For more information please visit http://www.messagelabs.com/email > > ______________________________________________________________________ > > _______________________________________________ > > osg-users mailing list > > [email protected] > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
