Hi Giulio,

Could you please support questions like this on osg-users rather than
osg-submissions as this list is purely for code submissions.

Thanks,
Robert.

On Mon, Apr 11, 2011 at 9:08 AM, Giulio De Vecchi
<[email protected]> wrote:
> Hi all,
>    in my application I have a couple of strange effects I cannot explain.
> In a few words:
> It is a C# application in which a user defined control:
>    class MyControl : UserControl
> create an osg viewer via C++/CLI:
>    _MyControl_Interop.Init(this.Handle);
> On the C++ side we have standard stuff:
>    p_hWND = reinterpret_cast<HWND> (wnd);
>    traits->inheritedWindowData = new 
> osgViewer::GraphicsWindowWin32::WindowData(p_hWND);
>    etc, etc.
>
> On the C++ side I don't have a rendering loop but I call "myViewer->frame()" 
> only when needed.
> The two strange effects are:
> 1) When the application loses the focus, all the objects and the background 
> layer often disappear and all I see is the clear color (i.e. the color set 
> with "MyViewer->getCamera()->setClearColor(...)"). Then I need to set the 
> focus on the panel again and do another call to "myViewer->frame()" to 
> restore the correct view. Is this normal? How can I avoid this?
> 2) After a few calls to "myViewer->frame()", the projection matrix become 
> corrupted (even if I didn't change anything in the scene), and I need to 
> reset it. I read this article: 
> "http://chadaustin.me/2009/02/ind-and-qnan-with-fpfast/": is it right? Do I 
> need to recompile osg? (currently I'm using precompiled libraries).
>
> Best regards.
> Giulio
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=38390#38390
>
>
>
>
>
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