Re: [CinePaint] OpenEXR default precission

Robin Rowe <[email protected]>
Newsgroups gmane.comp.video.cinepaint.user
Message-ID <[email protected]>
Kai-Uwe,

> I am working on the OpenEXR plug-in to support layered images for a 
> animation/modelling application (blender).

OpenEXR supports mixed 32-bit float, 16-bit half, and 32-bit integer 
channels. As I recall, 32-bit integer OpenEXR support is intended for 
Z-buffers.

You're right that you don't want to crush from 32f to 16h. Setting 
everything to 32f isn't the best answer either. The plug-in needs to 
detect which channel type it is in the file and open the right type in 
CinePaint.

Since CinePaint doesn't support Half as a type that seems a problem, but 
not really. Support for the obsolete 16-bit chopped float RnH format 
could be dropped and simply replaced with Half. At least one studio has 
customized CinePaint to do that. I don't think we've gotten the patch, 
but I think it's mostly just changing the 16rnh macros.

Robin




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