Hi Carsten,

the patch allows me to write and save osb with OpenSG1.8. When I try to load the resulting osb with 2.0 it seems to fail as I do not get any visible results. I'm not in my office right now, but the console output was something like this:
Unknown/missing fieldcontainer [0x0000000000].
The issue seems to be related to the attachment fix as I was able to load the same dataset produced using the unfixed osb exporter. The only thing I recognized yesterday was that the 2.0 importer was complaining about an unknown field container type which is including in our 1.8 extension library and was not ported to 2.0 yet. That message is gone now, so I guess the internal attachment export was prohibited as expected. But may be with some drawbacks...

Hope that helps, otherwise I may be able produce some harmless test data.

Thanks,
Michael

Am 18.10.2011 00:05, schrieb Carsten Neumann:
    Hello Michael,

On 10/17/2011 07:34 AM, Michael Raab wrote:
while testing OpenSG 1.8-2.0 compatibility the issue of not exporting internal attachments to OSB came back to life. I tested your proposed patch and unfortunately it doesn't seem to work well. I looked at the topic in a little bit more detail and did some addition to your previous patch, which is attached. Unfortunately it still does not work. I would guess there's a bit work to do in file OSGNFIOBase.cpp writeFCFields line 809. I think the value calculated and written for attachment map size is wrong if there are internal attachments that are not written to file. So the loader gets confused...

yeah, that sounds correct. Can you try the attached patch please (only very lightly tested here)?

    Cheers,
        Carsten


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