Re: [Openexr-devel] Writing FLOAT framebuffer to HALF file

[Florian Kainz]

Arne Schmitz wrote:
> I am trying to write a FLOAT framebuffer to a HALF file and I don't want to 
> convert the framebuffer manually before. Is there any chance I can do this? 
> If I specify the channels in the header as HALF and the slices in the FB as 
> FLOAT, the program aborts. I thought this would work, because reading a HALF 
> image into a FLOAT buffer works very well in a similar way.
>
> Arne
>
>
>
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Hi Arne,

the IlmImf library performs automatic conversion between pixel data
types only for input files.  For output files, data types of the frame buffer 
slices agree with the channels in the file; otherwise the library throws an 
Iex::ArgExc exception.  (Your program shouldn't simply abort, though.  If it 
does, you may be missing a try/catch block.)

Florian