- From: Florian Rivoal via GitHub <sysbot+gh@w3.org>
- Date: Fri, 30 Sep 2016 01:45:47 +0000
- To: public-css-archive@w3.org
Also, if my understanding is correct (and it very well may not be), the problem with that is that HDR luminance is an absolute scale, while SDR is a relative one (relative to a white diffuser). If we map SDR to HDR, it means we absolutize the luminance range of SDR, which leaves us with the question of what to do when the user/OS wants to adjust the screen brightness, or similarly, how to display the SDR range on screens whose peak brightness is less than the one we picked as the absolute luminance of the white diffuser. Also, this would prevent us from boosting the luminance of SDR content to view it in a bright environment. The alternative of making the HDR luminance scale relative to the white diffuser, and therefore no longer having an absolute luminance, seems to have fewer practical downsides, even if it is theoretically just as wrong. Or maybe we just let HDR fall where it should, and say that the luminance of the SDR white diffuser should be `min(peak screen brightness at current settings, 300nt)` -- GitHub Notification of comment by frivoal Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/554#issuecomment-250638560 using your GitHub account
Received on Friday, 30 September 2016 01:45:58 UTC