OpenColorIO Files

This is the main new feature release for this year and is the base version for the CY2025 VFX Reference Platform (which specifies 2.4.x).

The headline feature this year is a Preview Release of ACES 2 Output Transform support. This is a work-in-progress and we anticipate that both the processing results and the API will likely change somewhat before it is finalized. Our goal is to do that by the end of the year in a 2.4.x release.

Ideally, application developers will introduce 2.4.0 into their testing programs now and then update to the latest 2.4.x release available before shipping next year.

This documentation page explains the new features in this release.

Major new features:

PR [#1983], ACES 2 Output Transforms PR [#2039], Add updated CG and Studio configs for ACES 1.3 PR [#1941], Builtin Transform for Apple Log PR [#1914], OCIOView: Chromaticities inspector PR [#1932], Add AVX512 accelerated LUT1D and LUT3D PR [#2029], Add new FixedFunction and Builtin Transforms

Bug fixes and minor enhancements:

PR [#1988], Add NamedTransform support for ocioconvert PR [#2051], Add DCDM displays and improve HLG OOTF implementation PR [#2052], Add Wheels for Python 3.13 PR [#2006], OCIOView: App mode, tests, color space menus, bug fixes PR [#1966], OCIOView: Updates & fixes PR [#1985], OCIOView: Fix color_space_to_rgb_colourspace function usage PR [#1962], Add function to check if an extension is supported by FileTransform PR [#2059], Add hasAlias method to ColorSpace and NamedTransform PR [#2038], Add bit-depth flag to ocioconvert PR [#1981], Modify half-domain LUT1D GPU shader to improve zero handling PR [#1976], Allow read and write of file rules without color space validation PR [#2026], Update supported apps info for Photoshop and After Effects PR [#2022], Add Photoshop Beta support section to documentation PR [#2025], Remove legacy Photoshop and After Effects plug-ins PR [#2062], Add Python usage example for viewing pipeline on CPU PR [#2037], Add TouchDesigner to supported apps list PR [#2024], Fix typo in documentation PR [#1989], Improve GradingPrimary documentation PR [#2020], Allow building with gcc-15 PR [#2019], Harden test temp folder handling PR [#1987], Use the correct locale include for Darwin PR [#1977], TSC & Committer update, add Mark & Cuneyt, create an emeritus section PR [#1961], Replaced deprecated Carbon framework with ColorSync and CoreGraphics PR [#1960], Add ociocpuinfo utility PR [#1950], Fix CPU unit test failures on recent macOS ARM platforms PR [#2060], Update documentation for 2.4 release

Build process enhancements:

PR [#2053], Add Docker images for VFX Platform 2024 to CI PR [#2058], Fix Platform Latest CI PR [#2028], Add config file to fix ReadTheDocs builds PR [#1990], Fix for GitHub Actions node.js glibc issue PR [#1986], Improve minizip-ng installer CMake PR [#1945], Various CI workflow fixes PR [#1980], Improve Windows batch files to find installed Visual Studio location

Many thanks to the following contributors:

@remia, @cozdas, @KelSolaar, @zachlewis, @michdolan, @carolalynn, @JGoldstone, @markreidvfx, @num3ric, @KevinJW, @kingsawyer, @nick-shaw, @pennelee, @meimchu, @annieln, @AlexSchwank, @amyspark, @chandyn, @heshpdx, @SlawekNowy, @shaneantrim, @alinaka, @sumana-2705, and @doug-walker