Contact emails
[email protected]

Explainer
No information provided


Specification
https://github.com/gpuweb/gpuweb/pull/5389


Summary
Add a language feature to WGSL, `texture_and_sampler_let` that adds the ability 
to store texture and sampler objects into a let declaration in WGSL.


Blink component
Blink>WebGPU


Web Feature ID
webgpu


Motivation
To allow storing texture and samples in WGSL shaders into lets. This allows 
creating local names for what are usually global objects.


Initial public proposal
https://github.com/gpuweb/gpuweb/issues/5339


TAG review
No information provided


TAG review status
Pending


Risks




Interoperability and Compatibility
This feature has been approved in W3C GPU for the Web WG meetings including 
participants from Safari and Firefox. Meeting minutes: 
https://docs.google.com/document/d/1kTmVO9okQZOotWtCNDzRaF-rPXgyIVJ-u5PEe7rnjQc/edit?tab=t.0#bookmark=id.u8bh2sfreh45

Gecko: No signal Mozilla members have approved 
https://github.com/gpuweb/gpuweb/pull/5389 and requested during weekly 
standardization meetings that we postpone filing standard positions until we 
reach Candidate Recommendation (CR) status in Q4.

WebKit: Closed Without a Position 
(https://github.com/WebKit/standards-positions/issues/294#issuecomment-1877411933)

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
All platforms will eventually have support. Will immediately be available on 
Android, Android WebView, ChromeOS, Mac, and Windows, where hardware support is 
available. Linux is planned to have WebGPU support in the future, so this 
feature will become available when WebGPU does.


Is this feature fully tested by web-platform-tests?
Yes
WebGPU/WGSL have a conformance test suite (https://github.com/gpuweb/cts) that 
is regularly pulled into Chromium and part of the testing of Dawn/Tint in 
Chromium. While the CTS can be embedded in WPT, the WebGPU team opted to keep 
it separate in Chromium testing to use a customized harness for robustness and 
performance. CTS: https://github.com/gpuweb/cts/pull/4490


Flag name on about://flags
No information provided


Finch feature name
UnsafeWGSLFeatures


Rollout plan
Will ship enabled for all users


Requires code in //chrome?
False


Tracking bug
https://crbug.com/459500757


Estimated milestones


Shipping on desktop 146

Shipping on Android 146

Shipping on WebView 146




Anticipated spec changes

Open questions about a feature may be a source of future web compat or interop 
issues. Please list open issues (eg links to known github issues in the project 
for the feature specification) whose resolution may introduce web 
compat/interop risk (eg, 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/5102334940151808?gate=6582632798355456


This intent message was generated by Chrome Platform Status.

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