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 <si...@lightmap.co.uk> 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
> Openexr-devel@nongnu.org
> https://lists.nongnu.org/mailman/listinfo/openexr-devel
> 
> 

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