Re: [CinePaint] OpenEXR default precission

Am 09.01.07, 14:06 -0800 schrieb Robin Rowe:

> > 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.

Just how to make it transparent to the user.

> 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.

Nice idea. Thanks.
This would solve the current 32f / 16h dilemma.

kind regards
Kai-Uwe Behrmann
--
development for color management 
www.behrmann.name + www.oyranos.org + www.cinepaint.org

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