Re: Client hints: Add support for hinting Display Gamut / Color Profile

Mark Nottingham <mnot@mnot.net> Mon, 21 November 2016 03:59 UTC

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From: Mark Nottingham <mnot@mnot.net>
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Date: Mon, 21 Nov 2016 14:54:34 +1100
Cc: HTTP Working Group <ietf-http-wg@w3.org>, Ilya Grigorik <igrigorik@google.com>
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To: "Gunther, Brunner" <gunther_brunner@cyberagent.co.jp>
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Subject: Re: Client hints: Add support for hinting Display Gamut / Color Profile
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Hi Gunther,

Thanks for bringing it up. 

What do people think about this? Note the discussion on the issue Gunther raised:
  https://github.com/httpwg/http-extensions/issues/263

My .02 -- If we're not sure that we can get this into the spec quickly, it may make more sense to do it as a separate draft. It doesn't need to be in the same draft as CH; putting the headers you see there together was only for convenience.

Cheers,


> On 8 Nov. 2016, at 7:54 pm, Gunther, Brunner <gunther_brunner@cyberagent.co.jp> wrote:
> 
> Hi, my name is Gunther Brunner and I work for CyberAgent, Ltd.
> We are building a real-time image processing service.
> 
> 
> I would like to discuss adding client hints support for the following Display related Header Fields:
> 
> Viewport-Color-Gamut
> https://drafts.csswg.org/mediaqueries-4/#color-gamut
> 
> Viewport-Color-Profile
> https://www.w3.org/TR/css-color-4/#at-ruledef-profile
> 
> 
> The reason for this request is that recently, there has been a huge market increase in Displays that are non-sRGB (In particular DCI-P3 and AdobeRGB displays).
> 
> As an example: iPhone 7, Galaxy S7, MacBook Pro, Surface Studio, all of them support DCI-P3 wide color.
> 
> However since the “color-gamut” it’s a display thing the only way to detect for wide-color support from server side would be Client Hints since its not even possible with UA-sniffing (for most cases).
> 
> I know the spec is past WGLC, 
> but still would like to discuss this further, and its feasibility.
> 
> Thank you.
> 
> Regards,
> Gunther Brunner
> 
> 

--
Mark Nottingham   https://www.mnot.net/