On 27/12/2025 13:04, jr wrote:
> hi,
> 
> kurtz le pirate <kur### [at] freefr> wrote:
>> After trying out various sources*, I realize that anything related to
>> reading and writing in exr format on Mac does not work.
>>
>> My version is :
>> Persistence of Vision(tm) Ray Tracer Version 3.8.0-beta.2.unofficial
>> Compiler: Apple LLVM 12.0.5 (clang-1205.0.22.11)
>>
>> Is this a general bug in POVRay or is it specific to Mac?
> 
> can you please post a scene plus image ?  I don't use Apple but I'd like to try
> it here (the most "exotic" file format I have to hand is one hdr image :-)).
> 
> 
> regards, jr.
> 

Look at <https://www.lilysoft.org/CGI/SR/Spectral%20Render.htm> and 
render ColorChecker.pov by following the instructions
Setion "First Step" on the web page.

command line attributes :
+W800 +H600 +A0.1 +AM2 +R3 +FE +KI1 +KF36 +KFI38 +KFF73

+FE is exr file format.



Later, on "SpectralComposer.pov", exr format is used :

#declare F[I] = function {
  pigment {
   image_map {exr concat(FName, str(I+38,0,0))} translate -0.5
   }
  }





-- 
kurtz le pirate
compagnie de la banquise

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