Hi,
> Antonio Bleile wrote:
> > Hi,
> >
> > I'm currently writing a library which uses some OpenSG stuff.
> > The library is static and within the library I create FBO's.
> > I took my tested code from my small stand-alone application
> > and pasted it into the library code, so the code itself should
> > be ok.
> > The problem now is, when I use the library I get wild crashes
> > inside the OSGSystem library. I'm suspicious about the fact
> > that I'm creating a static windows library. I have successfully
> > used dll libraries which used OpenSG so far. I'm using VS.NET
> > 2005 and a recent OpenSG dailybuild. Here are my compiler flags
> > for the library:
> >
> >
> [snip]
> > Do you have any ideas what might be wrong???
> >
> Be aware that unreferenced compilation units are optimized away when
> using static libraries. This does not happen with dlls/exes. (So if you
> have a cpp file that only registers itself in a factory, it might not be
> executed unless there is a call from main() into the function itself.)
> There is a pattern called NiftyCounter that works around that.
Interesting to know but that wasn't the problem.
> There could also be a few similar issues with initalization order. Are
> you sure that you don't call anything (important) in OpenSG before
> osgInit()?
Wasn't this either ;)
> There might be something else too, do you have a call stack?
It turns out that the problem was something very different.
I figured that I can't render the fbo viewport without
issuing a render on the SimpleSceneManager. The tutorial
states a comment:
// make sure the window is setup before rendering to the FBO
mgr->redraw();
If you remove this redraw from the tutorial sample (29FBOTexture),
it crashes. Would be nice if that could be avoided as it a little
bit dirty. I don't know how complicated it is though.
Thank you and regards,
Toni
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