Re: Strange issue with half and _toFloat array.
Nick <[email protected]>
| Newsgroups | gmane.comp.video.openexr.devel |
|---|---|
| Message-ID | <[email protected]> |
Name mangling changed, and CreateDLL doesn't work with newer compilers. Sent from my iPhone > On Feb 13, 2014, at 10:51, "Piotr Stanczyk" <[email protected]> wrote: > > If you have a few spare cycles, could you build using cmake? > > thanks > > Piotr > > > >> On 13 February 2014 10:40, Simon Smith <[email protected]> wrote: >> Hi Piotr, >> >> I used the version that's zipped up on the main OpenEXR website (v2.1.0). >> >> I then duplicated the vc 2010 directory to build for VS2012 (just upgrading the projects on loading etc). >> The projects there include the createDLL project and use them in the post-build steps. >> >> I'm 99% sure the issue is that it's a DLL as mentioned because statically building the libs works as expected. >> >> Best Regards, >> Simon >> >> >> >>> On 13 Feb 2014, at 17:12, Piotr Stanczyk wrote: >>> >>> Which version are you using? We should be building without the createDLL path since we made a pass at setting the visibility attributes >>> >>> Piotr >>> >>> >>> >>>> On 13 February 2014 06:03, Simon Smith <[email protected]> wrote: >>>> I've built the OpenEXR files under Windows using VS2012 from the source linked from the OpenEXR website. >>>> Everything builds OK (after a few tweaks as mentioned on this group) and the HalfTest runs OK. >>>> >>>> I was having issues with half/floats in my application, so I wrote a quick test command line app to check everything was OK. >>>> Not unsurprisingly, it was not! >>>> >>>> This was the code … >>>> >>>> float f1 = 0.0f; >>>> float f2 = 4.0f; >>>> half h1 = f1; >>>> h1 += f2; >>>> float fRes = h1; >>>> >>>> assert(fRes = 4.0f); >>>> >>>> When converting from the half to a float to get fRes I'm getting an exception reading from the _toFloat array. >>>> >>>> I'm not quite sure how or why this happens - if I debug in the testArithmetic call in the HalfTest, it all seems OK … so why would my test program not load the DLL correctly, but the HalfTest does. >>>> >>>> Pretty sure it's something dumb that I'm doing, but cannot think what it might be. >>>> >>>> I'm using VS2012, Win8.1, running Debug x64 builds and the ilmbase-2.1.0 sour code (built in VS2012 too). >>>> >>>> As a side note, when building the source I had to do the following: >>>> 1) Include config.windows to the Iex and IMath libraries >>>> 2) Manually copy the halfExport.h files over to the deploy directory. >>>> 3) Patch BaseExc to have a std::string member & change the IEX_EXPORT decorations around (as outlined in an earlier post) >>>> >>>> So, any ideas, solutions, suggestions greatly appreciated to save my sanity :) >>>> >>>> Best Regards, >>>> Simon >>>> >>>> _______________________________________________ >>>> Openexr-devel mailing list >>>> [email protected] >>>> https://lists.nongnu.org/mailman/listinfo/openexr-devel > > _______________________________________________ > Openexr-devel mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/openexr-devel _______________________________________________ Openexr-devel mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/openexr-devel _______________________________________________ Openexr-devel mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/openexr-devel