Re: [fxtf-drafts] [compositing-2] 'lighter' vs 'plus-lighter' (#446)

> By HDR you mean an image that has colours outside the colour space rather than, say, rec2020? I thought it was rec2020 it'd still be 0-1, but in another space.

If you convert HDR `rec-2100` to `rec-2020` (which uses the same primaries and whitepoint) you will get some colors with slightly negative, or greater than unity, components.

For example `color(rec2100pq 0.71 0.78 0.67)` would be `color(rec2020 1.796 2.431 1.505)` all the components are over 1.

> I remember asking the same question to the CSS group and they said it was valid for a color to be over 1. 

It is.

-- 
GitHub Notification of comment by svgeesus
Please view or discuss this issue at https://github.com/w3c/fxtf-drafts/issues/446#issuecomment-981817329 using your GitHub account


-- 
Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config

Received on Monday, 29 November 2021 16:48:45 UTC