I can see it in the "Chrome 133" column from
https://chromestatus.com/roadmap
What do you see?

On Wed, Nov 20, 2024 at 4:12 PM Daniel Bratell <bratel...@gmail.com> wrote:

> Note, this doesn't show up as "intent to ship (deprecate/remove)" in
> chromestatus so there is probably some buttons you need to press there.
>
> /Daniel
> On 2024-11-20 15:58, Daniel Bratell wrote:
>
> LGTM1 to deprecate now with full removal in M135. The amount of
> fingerprinting/tracking scripts that access this is scarily high but I
> trust those to be suitably robust.
>
> /Daniel
> On 2024-11-20 08:13, 'François Beaufort' via blink-dev wrote:
>
>
>
>
> On Wed, Nov 20, 2024 at 4:07 AM Mike Taylor <miketa...@chromium.org>
> wrote:
>
>>
>> On 11/19/24 11:55 AM, François Beaufort wrote:
>>
>> Thanks for the review Mike!
>>
>> On Tue, Nov 19, 2024 at 5:30 PM Mike Taylor <miketa...@chromium.org>
>> wrote:
>>
>>>
>>> On 11/19/24 5:21 AM, 'François Beaufort' via blink-dev wrote:
>>>
>>> Contact emails
>>>
>>> fbeauf...@google.com
>>>
>>> Explainer
>>>
>>> The maxInterStageShaderComponents limit is being removed due to a
>>> combination of factors:
>>>
>>> - Redundancy with maxInterStageShaderVariables: This limit already
>>> serves a similar purpose, controlling the amount of data passed between
>>> shader stages.
>>>
>>> - Minor discrepancies: While there are slight differences in how the two
>>> limits are calculated, these differences are minor and can be effectively
>>> managed within the maxInterStageShaderVariables limit.
>>>
>>> - Simplification: Removing maxInterStageShaderComponents streamlines the
>>> shader interface and reduces complexity for developers. Instead of managing
>>> two separate limits with subtle differences, they can focus on the more
>>> appropriately named and comprehensive maxInterStageShaderVariables.
>>>
>>> https://github.com/gpuweb/gpuweb/pull/4783
>>>
>>> Specification
>>>
>>>
>>> https://gpuweb.github.io/gpuweb/#dom-supported-limits-maxinterstageshadervariables
>>>
>>> Summary
>>>
>>> Removes the maxInterStageShaderComponents limit from WebGPU, which has
>>> been deemed to be unnecessary. This removal is a minor breaking change.
>>>
>>> Blink component
>>>
>>> Blink>WebGPU
>>> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EWebGPU>
>>>
>>> Motivation
>>>
>>> Removing maxInterStageShaderComponents eliminates unnecessary complexity
>>> and potential confusion by consolidating the functionality within the
>>> existing maxInterStageShaderVariables limit. This change promotes cleaner
>>> code and a more intuitive development experience.
>>>
>>> To clarify, are you requesting to deprecate this for some period of time
>>> (if so, I don't see a deprecation plan), and then come back to remove? Or
>>> just remove it in M133?
>>>
>>
>> This intent is for deprecating this limit for some period of time to give
>> developers enough time to migrate and eventually remove it.
>>
>> Thanks François - so what is the plan? If we send a deprecation message -
>> how long do you think doing so would be effective?
>>
>
> Regarding the deprecation plan, I suggest the following timeline as we're
> anticipating Safari and Firefox to soon support WebGPU :
> - 133: Deprecation warnings begin, recommending the use of the
> maxInterStageShaderVariables limit instead.
> - 135: Effective removal of the maxInterStageShaderComponents limit.
>
>>
>>> A search for the string "maxInterStageShaderComponents" in HTTPArchive
>>> yielded no results.
>>>
>>> There does seem to be non-test code calling this when poking around
>>> https://github.com/search?q=maxInterStageShaderComponents+language%3AJavaScript&type=code&l=JavaScript.
>>> Have you looked at that yet?
>>>
>>
>> Yes. Those are mostly libraries that handle getting
>> the maxInterStageShaderComponents limit, but not "real" apps actually
>> requiring the limit when the limit is not high enough for their use case.
>>
>>>
>>> As of November 16th, 2024, usage of the maxInterStageShaderComponents
>>> limit within GPUAdapter and GPUDevice reached a peak of 0.3163% of page
>>> loads. Additionally, its usage in requiredLimits when called through
>>> requestDevice reached 0.0004% on the same day. These metrics are tracked in
>>> the ChromeStatus dashboard through
>>> https://chromestatus.com/metrics/feature/timeline/popularity/5110 and
>>> https://chromestatus.com/metrics/feature/timeline/popularity/5111.
>>>
>>> Can you help a non-expert understand the difference between these two
>>> metrics? ~0.32% is quite high.
>>>
>>
>> The first one happens when a web app calls the GPUSupportedLimits
>> attribute getter adapter.limits.maxInterStageShaderComponents for instance.
>> The high usage is due to scripts using this for analytics/bot
>> protection/fingerprinting.
>> The second one is the one we care the most. It is web apps that actually
>> require a maxInterStageShaderComponents GPU limit when requesting a GPU
>> device. We don't want to break those, and that's why we'll add deprecation
>> warnings so that they can use the maxInterStageShaderVariables limit
>> instead.
>>
>> Also, what about https://github.com/gpuweb/gpuweb/pull/4781 - do we ship
>>> this behavior in Chromium?
>>>
>> I'm actually working on this as we speak. It's not in Chromium yet.
>>
>>>
>>>
>>> Initial public proposal
>>>
>>> None
>>>
>>> TAG review
>>>
>>> None
>>>
>>> TAG review status
>>>
>>> Not applicable as we're simply removing a WebGPU limit.
>>>
>>> Risks
>>>
>>> Interoperability and Compatibility
>>>
>>> When WebGPU eventually launches in Safari and Firefox, websites will use
>>> exclusively the maxInterStageShaderVariables limit.
>>>
>>> We anticipate Safari and Firefox will soon support WebGPU, but won't
>>> include the non-standard maxInterStageShaderComponents limit. Therefore,
>>> the sooner Chromium implements the Deprecate and Remove process, the less
>>> likely it is that content will work in Chromium but not in other browsers.
>>>
>>> Gecko: No signal - Firefox representative agreed during team meeting to
>>> remove the limit from the spec:
>>> https://github.com/gpuweb/gpuweb/wiki/GPU-Web-2024-08-28#added-late-ok-to-defer-if-necessary-maxinterstageshadercomponents-seems-to-overlap-with-maxinterstageshadervariables-4688
>>>
>>> WebKit: No signal Apple representative strongly suggested removing the
>>> limit from the spec:
>>> https://github.com/gpuweb/gpuweb/issues/4688#issuecomment-2218446444
>>>
>>> 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?
>>>
>>> None
>>>
>>>
>>> Debuggability
>>>
>>> None
>>>
>>> Flag name on chrome://flags
>>>
>>> None
>>>
>>> Finch feature name
>>>
>>> WebGPUMaxInterStageShaderComponentsLimit
>>>
>>> Non-finch justification
>>>
>>> None
>>>
>>> Requires code in //chrome?
>>>
>>> False
>>>
>>> Tracking bug
>>>
>>> https://issues.chromium.org/issues/364338810
>>>
>>> Estimated milestones
>>>
>>> Shipping on desktop
>>>
>>> 133
>>>
>>> Shipping on Android
>>>
>>> 133
>>>
>>>
>>> Link to entry on the Chrome Platform Status
>>>
>>> https://chromestatus.com/feature/4853767735083008?gate=5110989125844992
>>>
>>> This intent message was generated by Chrome Platform Status
>>> <https://chromestatus.com/>.
>>>
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