Just a follow up email...the fix that Bernardt proposed in SourceData.cpp of the VPB code, seems to have fixed the problem. I don't have any issues building my database with VPB 0.9.10 now. This seems like a pretty blatant problem so I'm somewhat surprised that this problem hasn't come on the radar screen of the OSG community in general...
-Shayne -----Original Message----- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Tueller,Shayne R Civ USAF AFMC 519 SMXS/MXDEC Sent: Tuesday, July 13, 2010 10:01 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Fwd: Re: floating point exeption in VPB... Bernardt, Thanks much for that input. I definitely ruled out that my problem was due to the 64-bit architecture because I was able to reproduce it on 32-bit Linux using VPB 0.9.10. Using the same tif file, I did not see this problem using VPB 0.9.7. I will try your fix to see if that works for my situation. I will report the results. Your contribution is most appreciated... Regards, -Shayne -----Original Message----- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Bernardt Duvenhage Sent: Tuesday, July 13, 2010 7:07 AM To: osg-users@lists.openscenegraph.org Subject: Re: [osg-users] Fwd: Re: floating point exeption in VPB... Hi Shayne I'm experiencing a similar problem. The SourceData::readImage(...) method in \src\vpb\SourceData.cpp gives a destWidth and readWidth of zero which results in a tempImage of zero size (tempImage = new unsigned char[readWidth*readHeight*pixelSpace]). This is due to (I think) a failure of the two pass 360-degree shift test for intersection of the destination and source bounding boxes. The intersection is tested for 'valid()', but might still be of zero size. I adapted the 'if (!intersect_bb.valid())' test as shown below and it seems to work now. if ((!intersect_bb.valid()) || (intersect_bb.xMin()==intersect_bb.xMax()) ) { log(osg::INFO,"Reading image but it does not intersect destination - ignoring"); continue; } I'm building a simple terrain with BMNG data only. The destination bb is therefore (-180,180]. The intersection test however generates a valid intersection for the B1 tiff which is at (-270,-180] at some stage in the two pass test. The generated intersection is valid, but of zero size and hence the added condition in the above if. I attach my SourceData.cpp as reference. Regards, Bernardt >> "J.P. Delport" <jpdelp...@csir.co.za> 07/13/10 2:37 PM ===================== Bernardt Duvenhage Senior Researcher: Optronic Sensor Systems South African Council for Scientific and Industrial Research (CSIR) Tel: +27 12 841 2414 >>> -------- Original Message -------- Subject: Re: [osg-users] floating point exeption in VPB... Date: Mon, 12 Jul 2010 11:05:19 -0600 From: Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC <shayne.tuel...@hill.af.mil> Reply-To: OpenSceneGraph Users <osg-users@lists.openscenegraph.org> To: OpenSceneGraph Users <osg-users@lists.openscenegraph.org> 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: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] 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 <shayne.tuel...@hill.af.mil> 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 > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph. > org > > _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. 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