Robert,

After running osgdem in the debugger, it is crashing in gdalrasterband.cpp
where an integer divide by zero is happening. Tracing up further, it appears
that in the method SourceData::readImage(...) in SourceData.cpp, the
variable "destWidth" is coming in as zero. Interestingly, the first pass
through the loop in that method yields a destWidth of 256. On the next time
around, it is zero which is causing the crash in GDAL.

The ".tif" file is a file that I have used before with osgdem on another
machined with no problems so I know the image file is good.

I will try to dig further to get more on what's happening...

-Shayne

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Robert
Osfield
Sent: Saturday, July 10, 2010 3:30 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] floating point exeption in VPB...

Hi Shayne,

I develop under 64bit system and haven't encountered any floating
point exceptions issues with 64bit build of VPB.

Could you please run osgdem in a debugger and see what happens.  Could
you also update to svn/trunk for OSG and VPB to see if the problem
persists.

Robert.

On Thu, Jul 8, 2010 at 11:01 PM, Tueller, Shayne R Civ USAF AFMC 519
SMXS/MXDEC <[email protected]> wrote:
> All,
>
>
>
> I'm using VPB 0.9.10 along with OSG 2.8.2 on a system that is using 64-bit
> Linux (Fadora core 10) i386. Both packages were built from source.
>
>
>
> No matter what database I try to build, I get a floating point exception
> when running osgdem. I know the DTED and imagery are good since I've built
> VPB databases with this content on a windows 32-bit system.
>
>
>
> Here is a sample command that fails: osgdem -TERRAIN -geocentric -PagedLOD
> -whole-globe -t wholeearthtexture.tif -l 10 -o output.ive
>
>
>
> My question is, has anyone else seen problems with VPB in a similar
> environment. Are there some 64-bit issues going on here? I'm at a loss as
to
> why I'm getting this floating point exception. If I use any other content
> (i.e. dted or imagery), I get the same results.
>
>
>
> Any help or input would be most appreciated.
>
> -Shayne
>
> _______________________________________________
> osg-users mailing list
> [email protected]
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
>
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