Hi Chris,
Are you dynamically updating the text each frame? If so set the
DataVariance to DYNAMIC.
Robert.
On Wed, Oct 8, 2008 at 6:09 PM, Chris <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I'm having semi-random crash bugs when I add an osgText drawable to my
> scene. The actual error is a mem access violation, and it occurs after I've
> added & removed the node containing the drawable from the scene a random
> number of times' (usually from 1 to 10 times)
>
> The exception occurs in the same place in the call stack, apparently
> somewhere in my open gl .dll (nvoglnt.dll). One thing that puzzles me is
> that I'm using SWIG, and from the call stack the function
> PySwigObject_Check(PyObject *op) ) seems to call into the osgUtil .dll,
> which in about 10 stack layers ends up calling nvoglnt.dll. I don't know why
> 'PySwigObject_Check' would be caling the osg .dll, (see func copied below),
> but maybe some sort of wierd thread confusion ?
>
> SWIGRUNTIMEINLINE int
> PySwigObject_Check(PyObject *op) {
> return ((op)->ob_type == PySwigObject_type())
> || (strcmp((op)->ob_type->tp_name,"PySwigObject") == 0);
> }
>
> The crash does NOT occur if I repeatedly create/delete the osgText drawable
> but don't add it to my scene. It does not crash during the render but seems
> to corrupt something that fails elsewhere (apparently in
> 'PySwigObject_Check' )
>
> While I can't be certain it's not my code, I have been running the same
> render code (which uses osg) now for a few years without problems. Note
> that I dont explictly create extra threads in my code, beyond what osg might
> be doing.
>
> I thought this looked like some thread/mutex problem, or pehaps a VC++ STL
> problem (anyone had these issues with osg Text before?) I created a new
> version of osgText that hacks out the STL-based 'String' class used to
> 'setText', but no dice.
>
> I was running on WinXP, using compiler: Visual Studio .net 2002. I just
> installed Osg 2.7.1, and Visual Studio Express 9.0; but the crash still
> occurs.
>
> TIA,
> Chris
>
> --
> www.sketch3.com
>
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>
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