Hello,
This little problem popped up again with the latest daily build preventing
our active stereo cluster windows to work. I just had to add a range check back
to hasExtension() in OSGWindow.inl and change the "vector<bool>" found in
OSGWindow to "vector<UInt8>". Can someone add this to the trunk so it gets
included in any future builds of 1.8? (even though we should all be moving to
2.0 at this point)
inline bool Window::hasExtension(UInt32 id)
{
+ if(id >= _availExtensions.size())
+ return false;
+
return _availExtensions[id];
}
Thanks
E.
---
Eric Maslowski
Research Computer Specialist
University of Michigan 3D Lab
email: [EMAIL PROTECTED]
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Carsten Neumann
Sent: Wednesday, September 05, 2007 19:26
To: [email protected]
Subject: Re: [Opensg-users] vector <x> iterator not dereferencable - OSG 1.8,VS
2005, Run-time Error
Hello Eric,
On Tue, 2007-09-04 at 09:35 -0400, Eric Maslowski wrote:
> Hello,
> Replacing the "vector<bool>" with a "vector<Uint8>" fixed that
> issue, but ran into another semi-related one. (see below) First, just
> want to point out that there were a few instances of vector<bool> scattered
> about. Some were:
> vector <bool > for formatting purposes. (just in case this gets added to
> the standard release)
>
> As for the other issue, I'm getting a vector out of range now in
> RenderAction::start(id). Digging a little deeper shows that it's
> actually coming from the "window->hasExtension(_arbOcclusionQuery)."
> inside hasExtension(), _arbOcclusionQuery has id of 35, when total
> count of entries in list (_availExtensions) is 35. Thus, causing out
> of range error. This only seems to happen in a clustered application
> when using more than one osg::viewport. (e.g. for stereo rendering)
hm, it might be a problem with concurrent access to the extension handling, but
this is just a guess. I'll take a look at the extension handling from that
angle.
> Unfortunately, I don't know enough about how OpenSG handles extensions
> to be of much help here, but if someone has a work around/fix, I would
> really appreciate it.
I imagine it would be possible to paper over the problem, by either finding out
how to disable the range checks in the MS STL or use the attached patch (but
that might disable an extension, although it is actually available), to get
things going.
> OpenSG 1.8 (daily build: Sep 2, 2007)
> NVIDIA Quadro 5600 (latest drivers)
> WinXP 64
Thanks,
Carsten
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