[Bf-committers] ASC-CDL test suite compliance

Julien Enche julien.enche at gmail.com
Fri May 13 20:11:52 CEST 2011


I've been working on improving the DPX/Cineon code of Blender for some
weeks now (yes, I'm a very slow coder).
With this patch, Blender is able to load every files of the
GraphicsMagick test suite (ftp://ftp.graphicsmagick.org/pub/dpx/) and
the saved DPX/Cineon now match the viewer.
I'll try to release it next week.

In the meantime, feel free to ask any questions.


Le 12/05/2011 19:15, Andrew Hunter a écrit :
> Hi Everyone,
> I'm posting this to both the blender development list and the blender
> vfx list as I think it is relevant to both.
> This package is meant to illustrate the current deficencies in Blender
> with regards to 1) DPX handling [1], 2) color management and 3)
> ASC-CDL compliance [2].
> I am a freelance cinematographer with a hobby interest in both open
> source software and post-production. I have had experience working
> with a colorist on already mature color grading solutions for Linux
> like Baselight and Davinci Resolve. I would love to see Blender's
> power and flexibility as a 3D modeling and compositing solution be
> extended to that of a colorist.
> Even before that though, Blender needs to get it's ImageIO and color
> management house in order.
> With in this package you will find as follows:
>  * Example .blend files.
>  * Screenshots of the tested setup.
>  * Reference DPX's and the .ccc list from the ASC-CDL reference
> distribution included for convenience
>  * Blender's output from the .blend files rendered as DPX
> For reference I have used the iv utility from the OpenImageIO project
> and their DPX implimentation as being correct and complete.
> OpenImageIO can be obtained from https://sites.google.com/site/openimageio/
> OpenImageIO was compiled from a recent trunk.
> If I have made any errors or omissions, please let me know. I've did
> this testing with the intent of sparking discussion.
> http://files.aehunter.net/Blender/Blender%20ASC-CDL%20Tests.tar.gz
> = Related Bug Reports =
> 27377 - Rendered DPX's do not match viewer [1]
> 27378 - ASC-CDL Color Balance Node does not allow for full range of values [2]
> [1] http://projects.blender.org/tracker/index.php?func=detail&aid=27377&group_id=9&atid=498
> [2] http://projects.blender.org/tracker/?func=detail&atid=498&aid=27378&group_id=9
> Cheers,
> Andrew
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