[Bf-committers] cineon/dxr support in Blender

[Ton Roosendaal]

Hi,

Oh, that's cool! :)

Afiak, Cineon is per-definition film-scanner format, and requires this  
logarithmic mapping to black and white, also allowing deeeep black and  
ultra white colors. Probably the cinepaint code has the formula for  
conversion from float (0-1) range to cineon range?

DPX is a generic format, which can also write 16 bits/component. For  
dpx, linear mapped colors should be possible too.

We're visiting a film facility in Amsterdam this afternoon with a  
couple of cineon and dpx test files (converted with cinepaint), and  
then can confirm whether that cineon range is hardcoded for their  
software, or just an option.

I've got to write press release stuff now... will be in irc soon!

-Ton-

On 2 Mar, 2006, at 9:05, Joe Eagar wrote:

> I've sucessfully ported cinepaint's cineon exporter to blender, and  
> will have the dxr exporter ready shortly.
>
> Whatever blessed developer wrote the cinepaint cineon/dxr plugin wrote  
> a generic exporting library, so porting it was really, really easy.  I  
> should have a patch ready within a day or two.  I need to finish dxr  
> support, and go through the code with -pedantic.  The first patch will  
> be exporter-only.
>
> I had a question though: is it desirable to have user-specifiable  
> white and black ranges?  By this, I mean that in cineon/dxr you can  
> specify where in the 0-1023 range black and white are (the standard is  
> 95 for black and 685 for white).   This is for recording the exact  
> luminance range of film, which I believe can record values above/below  
> black.
>
> The original code is GPL so there should be no licensing issues.
>
> joeedh
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Ton Roosendaal  Blender Foundation ton at blender.org  
http://www.blender.org