On Wed, Oct 15, 2025 at 3:46 PM Daniel Bratell <[email protected]> wrote:

> Judging from what you write, the explainer must be slightly dated, but as
> it is, it clearly states that this must not ship. Someone (TM) should
> update that text.
>

Thanks for flagging this issue. Someone (a nice person) has just sent a PR:
https://github.com/gpuweb/gpuweb/pull/5388

The signals from other vendors become a bit unclear when everything "post
> initial release" is bundled together. The positive signal from WebKit is a
> year old and I assume this particular feature did not exist back then.
>

The Webkit representative who published this signal has also approved
the feature PR:
https://github.com/gpuweb/gpuweb/pull/5361#pullrequestreview-3325251580
Note that meeting notes linked show that both Mozilla and Safari agreed on
this feature.


> Otherwise it seems like a small straightforward change.
>

Agree ;)


> /Daniel
>
>
> On 2025-10-14 21:03, 'François Beaufort' via blink-dev wrote:
>
> *Contact emails*
> [email protected]
>
> *Explainer*
>
> https://github.com/gpuweb/gpuweb/blob/main/proposals/texture-component-swizzle.md
>
> *Specification*
>
> https://gpuweb.github.io/gpuweb/#dom-gpufeaturename-texture-component-swizzle
>
> *Summary*
> Functionality added to the WebGPU spec after its first shipment in a
> browser.
>
> Allows GPUTextureViews to rearrange or replace the color components from
> texture's red/green/blue/alpha channels when accessed by a shader.
>
> *Blink component*
> Blink>WebGPU
> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EWebGPU%22>
>
> *Web Feature ID*
> webgpu <https://webstatus.dev/features/webgpu>
>
> *TAG review*
> None
>
> *TAG review status*
> Pending
>
> *Risks*
>
>
> *Interoperability and Compatibility*
> This feature has not yet been implemented yet in any browser. It has been
> approved by the GPU for the Web Community Group, with representatives from
> Chrome, Firefox, and Safari. See minutes at
> https://github.com/gpuweb/gpuweb/wiki/GPU-Web-2025%E2%80%9010-08#should-texture-swizzle-move-usage-restrictions-from-createview-to-createbindgroupbeginrenderpass-5298
> ,
> https://github.com/gpuweb/gpuweb/wiki/GPU-Web-2025%E2%80%9010-01#should-texture-swizzle-move-usage-restrictions-from-createview-to-createbindgroupbeginrenderpass-5298,
> and
> https://github.com/gpuweb/gpuweb/wiki/GPU-Web-2024-09-F2F#finalize-texture-swizzle
>
> *Gecko*: No signal (
> https://github.com/mozilla/standards-positions/issues/1205#issuecomment-3312534193
> )
>
> *WebKit*: Positive (
> 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?
> None
>
>
> *Debuggability*
> None
>
> *Will this feature be supported on all six Blink platforms (Windows, Mac,
> Linux, ChromeOS, Android, and Android WebView)?*
> All platforms will eventually have support. Will immediately be available
> on Android, Android WebView, ChromeOS, Mac, and Windows, since those
> platforms already support WebGPU. 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
> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?*
> 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. All the tests about this feature in WebGPU CTS
> can be found at https://github.com/gpuweb/cts/pull/4427
>
> *Flag name on about://flags*
> Enable Unsafe WebGPU
>
> *Finch feature name*
> WebGPUTextureComponentSwizzle
>
> *Rollout plan*
> Will ship enabled for all users
>
> *Requires code in //chrome?*
> False
>
> *Tracking bug*
> https://issues.chromium.org/issues/414312052
>
> *Estimated milestones*
> DevTrial on desktop 142
> DevTrial on Android 142
>
> *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).
> None
>
> *Link to entry on the Chrome Platform Status*
> https://chromestatus.com/feature/5110223547269120?gate=5339076953767936
>
> This intent message was generated by Chrome Platform Status
> <https://chromestatus.com/>.
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> .
>
>

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