Whoops, forgot to fill this. It would be M114-M119 (6 milestones). I'm
reasonably hopeful that we can agree in the WebGPU group about this simple
integration in that time frame.

On Thu, Feb 23, 2023 at 5:27 AM Yoav Weiss <[email protected]> wrote:

>
> On Thu, Feb 23, 2023 at 12:27 AM Ken Russell <[email protected]> wrote:
>
>> To clarify the signals from Gecko and WebKit, "No signal" should be
>> considered as removed from both explanations.
>>
>> Hoping the Blink API owners approve this experiment - it's crucial in
>> order to achieve key customer use cases.
>>
>> Thanks,
>>
>> -Ken
>>
>>
>>
>> On Wed, Feb 22, 2023 at 3:20 PM Corentin Wallez <[email protected]>
>> wrote:
>>
>>> Hey all,
>>>
>>> This is an I2E for the WebGPU / WebCodecs integration point that is not
>>> part of the WebGPU v1 shipment as the WebGPU W3C group decided to remove it
>>> from the V1 milestone. However it is a critical integration point for the
>>> video applications looking to use WebGPU as part of their video processing
>>> pipeline. So we would like to start a second original trial, specifically
>>> for this feature, that developers can use to keep prototyping WebGPU video
>>> processing after WebGPU v1 is shipped. Because of the weird nature of this
>>> trial, I didn't know how to fill all the fields in ChromeStatus, so let me
>>> know if more details are needed!
>>>
>>> Contact [email protected], [email protected], [email protected]
>>>
>>> Explainerhttps://gpuweb.github.io/gpuweb/explainer/#image-input
>>> https://github.com/gpuweb/gpuweb/issues/1380
>>>
>>> Specificationhttps://gpuweb.github.io/gpuweb/#gpuexternaltexture
>>>
>>> Design docs
>>> https://github.com/gpuweb/gpuweb/issues/1380
>>>
>>> Summary
>>>
>>> WebGPU exposes an API to create opaque "external texture" objects from
>>> HTMLVideoElement. These object can be used to sample the video frames
>>> efficiently, potentially in a 0-copy way directly from the source YUV data.
>>> However the WebGPU specification for the first version of WebGPU does not
>>> allow creating GPUExternalTextures from WebCodecs VideoFrame objects. This
>>> capability is important for advanced video processing applications that are
>>> already using WebCodecs and would like to integrate WebGPU in the video
>>> processing pipeline. This features adds support for using a VideoFrame as
>>> the source for a GPUExternalTexture.
>>>
>>>
>>> Blink componentBlink>WebGPU
>>> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EWebGPU>
>>>
>>> TAG review
>>>
>>> TAG review statusPending
>>>
>>> Risks
>>>
>>>
>>> Interoperability and Compatibility
>>>
>>>
>>>
>>> *Gecko*: No signal WebCodecs is listed as "worth prototyping" which
>>> likely means this intergration is the same.
>>>
>>> *WebKit*: No signal WebCodecs is prototyped in Safari TP, so this
>>> integration is likely interesting.
>>>
>>> *Web developers*: Positive
>>>
>>> *Other signals*:
>>>
>>> Ergonomics
>>>
>>> No ergonomic risk. This API would be used at the intersection of WebGPU
>>> and WebCodec. It is designed to keep performance as high as possible by
>>> allowing o-copy sampling of YUV frame data.
>>>
>>>
>>> Security
>>>
>>> The lifetime management of VideoFrame was taken into account of this
>>> feature. No other security considerations.
>>>
>>>
>>> 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?
>>>
>>>
>>>
>>> Goals for experimentation
>>>
>>>
>>>
>>> Reason this experiment is being extended
>>>
>>>
>>>
>>> Ongoing technical constraints
>>>
>>>
>>>
>>> Debuggability
>>>
>>> No support.
>>>
>>>
>>> Will this feature be supported on all six Blink platforms (Windows, Mac,
>>> Linux, Chrome OS, Android, and Android WebView)?Yes
>>>
>>> Is this feature fully tested by web-platform-tests
>>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
>>> ?Yes
>>>
>>> DevTrial instructionshttps://github.com/gpuweb/gpuweb/issues/1380
>>>
>>> Flag name
>>>
>>> Requires code in //chrome?False
>>>
>>> Estimated milestones
>>>
>>> No milestones specified
>>>
>>
> What milestones are you planning to experiment in?
>
>
>>
>>>
>>> Link to entry on the Chrome Platform Status
>>> https://chromestatus.com/feature/5078348864159744
>>>
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>>>
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>> .
>>
>

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