2024-08-12

Owned by Carol Payne
Last updated: Aug 13, 2024
2 min read

August 12, 2024

Host: Carol Payne, Doug Walker

Secretary: Carol Payne 

Attendees: 

Doug Walker 
Carol Payne 
Mark Boorer
Joseph Goldstone
Thomas Mansencal
Barry Dempsey
Michael Root
Martin Davies
Matthias Scharfenberg

 

ASWF Color Interop Forum Meeting Notes

  • Color Space Encodings for Texture Assets and CG Rendering Whitepaper Review

    • Additions: CIE-XYZ-D65 Scene-Referred

      • Helpful interchange space for colorimetry that needs converted to the rendering space

    • Removals: ProPhoto and Linear ProPhoto

      • Requires a non-standard and slope-limited power function

      • Heavy implementation cost

    • Naming:

      • Is "sRGB - Scene-referred" too confusing for artists?

      • Scene-referred in this case is meant to replace the use of "texture" in previous workflows.

      • Matthias - yes, could see how this could be confusing for artists. Is scene-referred strictly necessary?

      • Thomas - scene is often conflated with linear by artist by default. It's in documentation around rendering everywhere.

      • Mark - Are we adding it just for the sake of symmetry? Is just having it on the display enough?

      • Joseph - should scene-referred be at the end of all the other spaces too? i.e. acescg?

      • Joseph - sRGB encoded strikes me as odd here and lots of words that a lot of artists might not be familiar with, a hover tooltip with more info might be really great UI wise here

      • Mark - similar to using the "description" part of an OCIO colorspace.

      • Display P3 vs sRGB Encoded P3-D65?

        • Joseph: OK that we don't also have DCI-P3? Group: yes, it's not used for texturing/rendering

        • Matthias - don't like the Display P3 name, but most people do know what it is. Is that a good trade off?

        • Matthias - what about sRGB Display P3? That's what's in the compact name

        • Mark - fine with that or just Display P3

      • Pass-through vs. Data?

        • No consensus that Pass-through would be an improvement, so leaving as Data for now

    • App handling of "Unknown" color space

      • Doug created an issue to discuss 

  • SIGGRAPH Feedback

    • General feedback was positive

    • Clarity is necessary around where all these initiatives fit, and the progress within them and what the goals are (CIF, NanoColor, full OCIO, etc)

  • For next meeting:

    • Please WRITE DOWN thoughts on naming issues:

      • sRGB - Scene-referred

      • sRGB Ecoded P3-D65

      • Anything else

    • Write thoughts in Slack, Github Issue, or on Whitepaper in comments, please.

    • Only written down opinions will be considered next meeting in order to make final decisions.