Hi Andrew,
I am using Visual Studio 2005 SP1, and using the standard toolset.
There is not a problem with compilation - it is a linking problem. The problem only occurs when
- My code has a class derived from osg::Camera::DrawCallBack
- Linked in release mode.
That means the issue would be encountered only rarely. Obviously it is some
kind of obscure Windows compile/link issue, but it is real.
Your issue is really weird. We use Visual Studio 2005 SP1, and use
camera DrawCallbacks occasionally, and we've never had that kind of
problem.
Camera DrawCallbacks are used in various places in OSG and in its
examples. For example, the ScreenCaptureHandler that is standard with
osgViewer uses a camera DrawCallback to do its work. So as a sanity
check, you can try to compile a recent version of OSG (with the
osgviewer application) with your compiler in Release mode. Then run
"osgviewer cow.osg" and press 'c'. That will use the DrawCallback to
capture a screen shot to the file "screen_shot_0.jpg" (by default) in
the current directory. If this works, then the problem must be in your
application or your project settings or something similar...
I just tested this and it works on my machine (with OSG SVN compiled at
midnight last night, on VC++ 2005 SP1).
Are you sure you're not passing your DrawCallback by value somewhere,
thus slicing off its vtbl? Or is something else in your usage peculiar?
I don't really know what to tell you to look for, it's just a bizarre
problem...
Hope this helps,
J-S
--
______________________________________________________
Jean-Sebastien Guay [email protected]
http://www.cm-labs.com/
http://whitestar02.webhop.org/
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