Contact [email protected], [email protected]

Explainerhttps://gpuweb.github.io/gpuweb/explainer/

Specificationhttps://www.w3.org/TR/webgpu

Design docs
https://gpuweb.github.io/gpuweb
https://gpuweb.github.io/gpuweb/wgsl
https://gpuweb.github.io/gpuweb/explainer

Summary
This Intent to Ship is specifically for enabling WebGPU by default on
Android. WebGPU previously launched on Windows, MacOS, and ChromeOS in
M113. See https://chromestatus.com/feature/6213121689518080 for details.

WebGPU has been available on Android behind a flag since M111, during which
time we have gathered feedback from developers, partners, and Chrome's
testing infrastructure to find and address issues on multiple mobile GPU
architectures.

WebGPU is the successor to the WebGL and WebGL 2 graphics APIs for the Web.
It provides modern features such as “GPU compute” as well as lower overhead
access to GPU hardware and better, more predictable performance. WebGPU is
developed by the “GPU for the Web” W3C community group.


Blink componentBlink>WebGPU
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EWebGPU>

TAG reviewhttps://github.com/w3ctag/design-reviews/issues/626

TAG review statusIssues addressed

Risks


Interoperability and Compatibility

With positive signals (and at least WIP implementations) from all browsers
and few unresolved issues in the spec repo, the compatibility risk is low
and mostly if other implementers find bugs in the spec as they flesh out
their WebGPU implementation.


*Gecko*: Positive (https://mozilla.github.io/standards-positions/#webgpu)

*WebKit*: In development (
https://github.com/WebKit/WebKit/tree/main/Source/WebGPU/WebGPU) Standards
position issue: https://github.com/WebKit/standards-positions/issues/107

*Web developers*: Strongly positive

Security

See detailed security explainer:
https://gpuweb.github.io/gpuweb/#malicious-use


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

Warnings and errors are exposed via dev tools. Specialized tools can be
built directly in JavaScript, integrated in applications or as devtools
extensions.


Will this feature be supported on all six Blink platforms (Windows, Mac,
Linux, Chrome OS, Android, and Android WebView)?No

Once enabled on Android, the only Blink platform where WebGPU will not be
enabled by default yet is Linux.


Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
?Yes

The WebGPU Conformance Test Suite is being built at
https://github.com/gpuweb/cts and can be integrated as a subdirectory of
WPT. It is already integreated into the Chromium CI infrastructure.

DevTrial instructions
https://github.com/gpuweb/gpuweb/wiki/Implementation-Status#chromium-chrome-edge-etc

Flag name on chrome://flags--enable-unsafe-webgpu

Finch feature nameWebGPUService

Requires code in //chrome?False

Availability expectationFeature will initially be enabled for Adreno and
Mali GPUs (the majority of the mobile market) on Android 12+, with other
hardware and OS versions added in the future as additional testing and bug
fixes allow. More broadly while there is no timeline commitment from
Firefox or Safari both browsers are known to be actively implementing
WebGPU and are anticipated to ship once their implementations are
sufficiently conformant.

Sample links
https://github.com/austinEng/webgpu-samples

Estimated milestones
Shipped on desktop 113
OriginTrial desktop last 114
OriginTrial desktop first 94
Shipping on Android 121
DevTrial on Android 111

Anticipated spec changesDiscussion on the core WebGPU and WGSL
specification has been minimal since the API was shipped on desktop, with
most ongoing discussion centered around additional features that can be
layered onto the API. While we are still open to minor spec bug fixes at
this point the overwhelming majority of the spec should see no behavioral
changes.

Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5119617865613312

Links to previous Intent discussionsIntent to prototype:
https://groups.google.com/a/chromium.org/g/blink-dev/c/dxqWTSvyhDg/m/1UDaFD17AQAJ

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