The Ship information does not appear to have been updated in chromestatus 
yet.
https://chromestatus.com/feature/5162372125818880

在2025年10月24日星期五 UTC+8 21:40:12<[email protected]> 写道:

> LGTM3
> On 10/24/25 3:22 a.m., 'Philip Jägenstedt' via blink-dev wrote:
>
> Great, thank you Chris!
>
> On Fri, Oct 24, 2025 at 9:03 AM Christopher Cameron <[email protected]> 
> wrote:
>
>> I've updated the CSS gradient tests for this here: 
>> https://chromium-review.googlesource.com/c/chromium/src/+/7077316
>>
>> There are also canvas gradient WPT tests (which is a feature that hasn't 
>> made it into the spec yet). I've updated the tests and our (speculative) 
>> implementation to include display-p3-linear.
>>
>>
>> On Thu, Oct 23, 2025 at 8:07 AM Philip Jägenstedt <[email protected]> 
>> wrote:
>>
>>> Good catch, gradients in linear color space is a very plausible use case 
>>> that we should test. Chris, can you add a test for this? I presume there 
>>> are other tests that can be copied.
>>>
>>> Den tors 23 okt. 2025 06:00一丝 <[email protected]> skrev:
>>>
>>>> It appears the new color space in WPT still lacks testing for CSS 
>>>> gradients. Could this be added?
>>>>
>>>> e.g.
>>>>
>>>> `background-image: linear-gradient(to right in display-p3-linear, red, 
>>>> blue);`
>>>>
>>>>
>>>>
>>>> 在2025年10月22日星期三 UTC+8 23:22:36<Chris Harrelson> 写道:
>>>>
>>>>> LGTM2
>>>>>
>>>>> On Wed, Oct 22, 2025 at 7:08 AM 'Philip Jägenstedt' via blink-dev <
>>>>> [email protected]> wrote:
>>>>>
>>>>>> I had a chat with Chris about this. 
>>>>>>
>>>>>> https://chromestatus.com/feature/5162372125818880 has been updated 
>>>>>> to link to the spec, and a standards position for Mozilla was filed:
>>>>>> https://drafts.csswg.org/css-color/#predefined-display-p3-linear
>>>>>> https://github.com/mozilla/standards-positions/issues/1311
>>>>>>
>>>>>> This already landed in WebKit:
>>>>>>
>>>>>> https://github.com/WebKit/WebKit/commit/40fca09d9ff83420031aa4cda7e0553e3b7a13fc
>>>>>>
>>>>>> https://wpt.fyi/results/css/css-color?label=master&label=experimental&aligned&q=display-p3-linear
>>>>>>  
>>>>>> (the failure of display-p3-linear-006.html is only off by 1 for a bunch 
>>>>>> of 
>>>>>> pixels)
>>>>>>
>>>>>> So I think this is quite a straightforward case, LGTM1!
>>>>>>
>>>>>> On Wed, Oct 22, 2025 at 3:06 PM Daniel Bratell <[email protected]> 
>>>>>> wrote:
>>>>>>
>>>>>>> The page at 
>>>>>>> https://www.chromium.org/blink/guidelines/web-platform-changes-guidelines
>>>>>>>  
>>>>>>> lists most of the things we want to know before sending a feature out 
>>>>>>> into 
>>>>>>> the wild wild world.
>>>>>>>
>>>>>>> One of the main questions regards compatibility. We want what we do 
>>>>>>> to end up in a web where browsers agree on how something should be 
>>>>>>> rendered 
>>>>>>> which is why we typically require new features to probe Mozilla and 
>>>>>>> WebKit 
>>>>>>> through their web standards positions (unless they have already 
>>>>>>> shipped).
>>>>>>>
>>>>>>> Another aspect of compatibility, and risk, is about web 
>>>>>>> compatibility. Will this change break things? Are we really, really 
>>>>>>> sure? 
>>>>>>> That is why we typically require every feature to have a finch flag so 
>>>>>>> that 
>>>>>>> at least Google Chrome can turn off something that causes unexpected 
>>>>>>> problems. 
>>>>>>>
>>>>>>> When I say "typical", it's because no rule fits all, but then we 
>>>>>>> instead need to know why a certain rule does not apply. 
>>>>>>>
>>>>>>> You will also see that we ask for some info texts, explainer, 
>>>>>>> specification, that many implementers consider obvious. Often it is not 
>>>>>>> obvious for other people though, and these texts end up in official 
>>>>>>> blog 
>>>>>>> posts and in other external communication.
>>>>>>>
>>>>>>> /Daniel
>>>>>>> On 2025-10-22 12:41, Christopher Cameron wrote:
>>>>>>>
>>>>>>> Let me know what questions you have. 
>>>>>>>
>>>>>>> Indeed, almost everything is N/A (I've filled them out in the 
>>>>>>> feature if you want to look).
>>>>>>>
>>>>>>> On Wed, Oct 22, 2025 at 12:20 PM Daniel Bratell <[email protected]> 
>>>>>>> wrote:
>>>>>>>
>>>>>>>> The form seems fields seem to be mostly left empty. I don't think 
>>>>>>>> anything should be empty (though a N/A may fit some things). I have 
>>>>>>>> questions, but they would mostly be answered by filling in the form 
>>>>>>>> and 
>>>>>>>> re-posting it.
>>>>>>>>
>>>>>>>> /Daniel
>>>>>>>> On 2025-10-22 11:58, 'Christopher Cameron' via blink-dev wrote:
>>>>>>>>
>>>>>>>> Hello blink-dev!
>>>>>>>>
>>>>>>>> This very simple feature adds display-p3-linear as a CSS color 
>>>>>>>> space. This has been added to the CSS specification and has a 
>>>>>>>> bazillion WPT 
>>>>>>>> tests from:
>>>>>>>> https://github.com/w3c/csswg-drafts/issues/12596
>>>>>>>> It has been requested as a candidate for interop 2026:
>>>>>>>> https://github.com/web-platform-tests/interop/issues/1167
>>>>>>>>
>>>>>>>> More relevant to the topics close to my heart are the fact that 
>>>>>>>> this is a very good space for physically based rendering and high 
>>>>>>>> dynamic 
>>>>>>>> range. Adding this space to the list of canvas spaces is a separate 
>>>>>>>> feature 
>>>>>>>> over at:
>>>>>>>> https://chromestatus.com/feature/5122501071994880
>>>>>>>>
>>>>>>>>
>>>>>>>> *Contact emails*
>>>>>>>> [email protected]
>>>>>>>>
>>>>>>>> *Specification*
>>>>>>>> *No information provided*
>>>>>>>>
>>>>>>>> *Summary*
>>>>>>>> Add display-p3-linear CSS color space
>>>>>>>>
>>>>>>>> *Blink component*
>>>>>>>> Blink>CSS 
>>>>>>>> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3ECSS%22>
>>>>>>>>
>>>>>>>> *Web Feature ID*
>>>>>>>> color-function <https://webstatus.dev/features/color-function>
>>>>>>>>
>>>>>>>> *Motivation*
>>>>>>>> *No information provided*
>>>>>>>>
>>>>>>>> *Initial public proposal*
>>>>>>>> *No information provided*
>>>>>>>>
>>>>>>>> *TAG review*
>>>>>>>> *No information provided*
>>>>>>>>
>>>>>>>> *TAG review status*
>>>>>>>> Not applicable
>>>>>>>>
>>>>>>>> *Risks*
>>>>>>>>
>>>>>>>>
>>>>>>>> *Interoperability and Compatibility*
>>>>>>>> *No information provided*
>>>>>>>>
>>>>>>>> *Gecko*: No signal
>>>>>>>>
>>>>>>>> *WebKit*: No signal
>>>>>>>>
>>>>>>>> *Web developers*: No signals
>>>>>>>>
>>>>>>>> *Other signals*:
>>>>>>>>
>>>>>>>> *WebView application risks*
>>>>>>>>
>>>>>>>> Does this intent deprecate or change behavior of existing APIs, 
>>>>>>>> such that it has potentially high risk for Android WebView-based 
>>>>>>>> applications?
>>>>>>>> *No information provided*
>>>>>>>>
>>>>>>>>
>>>>>>>> *Debuggability*
>>>>>>>> *No information provided*
>>>>>>>>
>>>>>>>> *Will this feature be supported on all six Blink platforms 
>>>>>>>> (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?*
>>>>>>>> No
>>>>>>>>
>>>>>>>> *Is this feature fully tested by web-platform-tests 
>>>>>>>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?*
>>>>>>>> No
>>>>>>>>
>>>>>>>>
>>>>>>>> *Flag name on about://flags*
>>>>>>>> *No information provided*
>>>>>>>>
>>>>>>>> *Finch feature name*
>>>>>>>> *No information provided*
>>>>>>>>
>>>>>>>> *Non-finch justification*
>>>>>>>> *No information provided*
>>>>>>>>
>>>>>>>> *Rollout plan*
>>>>>>>> Will ship enabled for all users
>>>>>>>>
>>>>>>>> *Requires code in //chrome?*
>>>>>>>> False
>>>>>>>>
>>>>>>>> *Estimated milestones*
>>>>>>>>
>>>>>>>> No milestones specified
>>>>>>>>
>>>>>>>>
>>>>>>>> *Anticipated spec changes*
>>>>>>>>
>>>>>>>> Open questions about a feature may be a source of future web compat 
>>>>>>>> or interop issues. Please list open issues (e.g. links to known github 
>>>>>>>> issues in the project for the feature specification) whose resolution 
>>>>>>>> may 
>>>>>>>> introduce web compat/interop risk (e.g., changing to naming or 
>>>>>>>> structure of 
>>>>>>>> the API in a non-backward-compatible way).
>>>>>>>> *No information provided*
>>>>>>>>
>>>>>>>> *Link to entry on the Chrome Platform Status*
>>>>>>>>
>>>>>>>> https://chromestatus.com/feature/5162372125818880?gate=4761603400663040
>>>>>>>>
>>>>>>>> This intent message was generated by Chrome Platform Status 
>>>>>>>> <https://chromestatus.com/>.
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>>>>>>>>  
>>>>>>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAGnfxj9fo12y5zfJ_TosXUU6LaQ6CAcRSX6nqBGnMUWvHZST9w%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>>>>>>> .
>>>>>>>>
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>>>>> To view this discussion visit 
>>>>>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAARdPYe7BS72Ua6q9gXt7OxqS%3DCEV%2BhxtMSknXzaAZhu1N_Fpg%40mail.gmail.com
>>>>>>  
>>>>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAARdPYe7BS72Ua6q9gXt7OxqS%3DCEV%2BhxtMSknXzaAZhu1N_Fpg%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>>>>> .
>>>>>>
>>>>> -- 
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