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.
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.
Otherwise it seems like a small straightforward change.
/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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