scott nous illumina en ce 2009-04-16 03:06 -->
>> Here lies your main issue. The suitable format. For Pov.
> 
> For BMP, JPEG, PNG etc I don't think you are allowed negative values so 
> POV would have to clip them before writing.  I don't know if the HDR 
> formats allow negative colour values or not.
> 
>> If you really want to work in another colorspace, you might want to 
>> specify some
>> information as a spectral sampling
> 
> Most functions in POV don't need that information, they don't need to 
> know what R,G and B actually are at all.  It would be a huge effort and 
> make rendering really much slower if you were to work on spectral 
> information, the only gain being things like dispersion being slightly 
> more accurate and being able to model fluorescent materials correctly.  
> I don't think it is worth it.
> 
> 
No ordinary graphic format support negative values.
Some HDRs may suport it.

-- 
Alain
-------------------------------------------------
You know you've been raytracing too long when...
you start thinking up your own "You know you've been raytracing too long 
when..." sigs (I did).
-Johnny D

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