[osg-users] Curious osgText crash

Vincent Bourdier vincent.bourdier at gmail.com
Mon Mar 2 06:36:40 PST 2009


Hi Kim,

I had a problem like this in the past, I solved it using a draw
callback to update the texts.

you can read this problem here :
http://thread.gmane.org/gmane.comp.graphics.openscenegraph.user/39315/focus=39408

Hopping this can help you.

Regards,
   Vincent.

2009/3/2 Kim C Bale <K.Bale at hull.ac.uk>:
> Hi all,
>
>
>
> I’m getting some odd errors in conjunction with osgText.
>
>
>
> I’m loading two font files and assigning them to various osgText drawables,
> which are in turn added to a series geodes.
>
> Each geode is then rendered to texture using individual pre render FBO
> cameras.
>
>
>
> When I set the application to single threaded all is well, however when I
> set it to AutomaticSelection
>
>
>
> It prints the error:
>
>
>
> before Font::Glyph::subload(): detected OpenGL error 'invalid operation
>
> before Font::Glyph::subload(): detected OpenGL error '
>
>
>
> Before crashing with an access violation. Last four entries on the call
> stack are at the base of the post.
>
>
>
> I’m not changing the text at any point after I’ve done the initial set up
> and I’ve tried setting the data variance on the osgText drawables to
> DYNAMIC. But it doesn’t seem to help.
>
>
>
> Anybody have any ideas what’s gone wrong here? Hopefully I’ve given enough
> information.
>
>
>
> Cheers,
>
>
>
> Kim.
>
>
>
>
>
>
>
> msvcr80d.dll!strlen(unsigned char * buf=0x0549ef78)  Line 81  Asm
>
>
>
> msvcp80d.dll!std::char_traits<char>::length(const char * _First=0x00000000)
> Line 559 + 0x9 bytes      C++
>
>
>
> osg55-osgTextd.dll!std::operator<<<std::char_traits<char>
>>(std::basic_ostream<char,std::char_traits<char> > & _Ostr={...}, const char
> * _Val=0x00000000)  Line 748 + 0xc bytes C++
>
>
>
> osg55-osgTextd.dll!std::operator<<<std::char_traits<char>
>>(std::basic_ostream<char,std::char_traits<char> > & _Ostr={...}, const
> unsigned char * _Val=0x00000000)  Line 929 + 0xd bytes C++
>
>
>
>
>
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