[osg-users] osgviewerMFC example crash in 2.1.8

[Ricko 3D]

By the way, to clarify when I wrote cOSG::InitSceneGraph ("MFC_OSG.cpp") I
meant it was in the MFC_OSG.cpp file, not that it was a parameter passed. I
didn't realize how poorly I wrote that until reading the mail again. Sorry.
That isn't the issue I'm trying to resolve.

 

From: osg-users-bounces at lists.openscenegraph.org
[mailto:osg-users-bounces at lists.openscenegraph.org] On Behalf Of Ricko 3D
Sent: Tuesday, August 28, 2007 1:19 PM
To: osg-users at lists.openscenegraph.org
Subject: [osg-users] osgviewerMFC example crash in 2.1.8

 

I'm still finding my way around OSG so I wanted to find out if this issue is
mine before I continue pulling my hair out. 

 

I downloaded and built OSG 2.1.8. I took the code from one of the examples
to test, prior to integrating OSG into my app. This is on WinXP SP2 x86 and
the dev env is VC++ in VS8.

 

- I created a new project using the code from the "osgViewerMFC" example. 

- It compiled fine in both release and debug and it launches with no issues.

- When I use the open command (from menu or toolbar) and direct it to any
test osg file, it crashes with both debug and release builds.

- I used the VS debugger to walk through and find the crash in the debug
build.

- Line 143 of "optimizer.cpp" caused an unhandled exception because node was
a NULL point.

- I walked up the call stack back into the osgViewerMFC code and found the
cause is that mModel in cOSG::InitSceneGraph ("MFC_OSG.cpp") is also NULL.

- It turns out osgDB::readNodeFile, earlier in InitSceneGraph, returned a
NULL mModel even though the filename passed was valid.

 

To verify it wasn't my settings when creating the example project from
scratch I chose another example, specifically osgShadow example. I created a
new project added the source, compiled, and both debug and release work
perfectly.

 

Is this a known issue with osgViewerMFC? If not any suggestion on what might
be causing it?

 

Thanks!

Ricko

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