The recording and notes from meeting #175 are now available.
Thanks for the recording of Jan. 8, 2025 meeting… and thanks to Kevin for all that work. A question did come to my mind… and in relation to what Kevin discusses at about 21:30 regarding CPUs and using old vs new compilers. Will these particular issues of timing be the same or differ with the DCTL language?.. also how would this timing be effected using Apple Silicon? (thinking of the M4)
I also like the idea of researching alternatives for calculation of POWF, and if needed some of the other functions, especially where these occur in loops or arrays.
I also missed the new time slot (what is it?), and are the meetings still at Launch Meeting - Zoom ?
Yes, the meetings are using the same Zoom link as previously, but are an hour earlier. See the calendar here (where you can also subscribe to it).
I obviously can’t speak for the Resolve team in terms of how they will implement ACES 2.0, but I wouldn’t necessarily expect a GPU implementation such as Resolve to have the same issues as the CPU does. There might be different issues, of course.
A thought as to the feedback from Corey Martinez and changing Blue saturation.
The Blues look to be a bit toward Cyan rather than straight to the primary Blue. The saturation of Cyans will not get as large as the saturation of the primary Blue due to the limitations of the color space used. Even though the eye can detect many Cyans (and Greens) even Rec.2020 cuts many of them off, and P3 more and Rec.709 even more. Since part of ACES 2 compresses the colors outside of the target display color space these saturation will seem to be lowered. (and compresses inside part of the space as well)
What is demonstrated in Corey’s video seems as might be expected from the compression. If the shift in saturation due to compression is not desirable maybe the hue can be shifted toward the primary (that is, if a shift in hue would be acceptable. Always a trade off it seems.) These shifts in saturation may be even more noticeable in HDR where more of the color and saturation can occur over the luminance range.