2025-09-15 TSC Meeting notes

Additions to 2.5 milestone list

• Active display/view list

  • https://github.com/AcademySoftwareFoundation/OpenColorIO/pull/2186

  • Ran into this issue in Flame. Lists are comma separated. API only allows you to access the list as one long string

  • Commas are legal values in colorspaces, displays and views, which can cause issues

  • New functions simplify this workflow for applications

• New categories default

  • https://github.com/AcademySoftwareFoundation/OpenColorIO/pull/2189

  • What do we do by default when a color space does not have a category

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Interop ID PR

• https://github.com/AcademySoftwareFoundation/OpenColorIO/pull/2165

• Needed to unblock Thomas, please review ASAP

• In regard to the interop_id specifically, we have made the decision to simplify the PR this time around.

• We had some functions to try to figure out the interop ID from aliases, and split out the namespace, but we have removed them for this release.

Vulkan PR

https://github.com/AcademySoftwareFoundation/OpenColorIO/pull/2176

• Eric Renaude-Houde will review on Friday

• Has been extensively reviewed at Autodesk by multiple folks and is pretty solid.

Config merging PR

https://github.com/AcademySoftwareFoundation/OpenColorIO/pull/2179

• Remi provided some feedback, thanks, still need official reviews

• Proposal to mark this feature as a “preview release” and then mark it final in 2.5.1 - Remi and Carol agree

• Removed the ability to use the ociom file as a config to respond to the TSC feedback

PRs still to come

• Update min third-party versions

  • Cuneyt is working on these, one or more PRs

• Actions fixes - Doug is working on these

• Built-in ACES 2 configs

2.5.0 built-in configs progress

• https://github.com/AcademySoftwareFoundation/OpenColorIO-Config-ACES/pull/160

• File rules for ACES config

  • Proposing adding default rules for stills, movies, etc

  • Changing of default from ACES-2065-1 to sRGB - Display

  • Kevin - should the rules be different between configs?

  • Mark - if the file rules are a last resort, how does a config author enforce them?

  • Carol - we should definitely look into ideal workflows and documentation after this release, and talk more about mechanics and enforcement

• Viewing rules for ACES config

  • Will be adding another column in the config spreadsheet to generate

  • Allows apps to use a non-aces view transform on media that is already display-referred

  • Remi - how is it different than un-tone-mapped? Doug: not much if the default view is un-tone-mapped, but very different if it isn’t.

• Interop IDs for ACES config

  • Proposal to use “OCIO” for the namespace

  • TSC thinks column/option 2 for consistency, clarity, future proofing.

  • Please review the names and comment in the spreadsheet

• AMF IDs in configs

  • Now pulling from the JSON file in the ACES repo

  • Has both current and previous equivalents - should we have only the current?

  • Carol: maybe all in the reference config, only the current in the studio and CG

  • TSC decides at least for the built-in library config, only put in the current ID