Re: Strange issue with half and _toFloat array.

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
>>
>>
>
>

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