LGTM2 On 5/18/26 2:43 p.m., Alex Russell wrote:
LGTM1On Thursday, May 14, 2026 at 1:24:51 AM UTC-7 Chromestatus wrote: *Contact emails* [email protected] *Explainer* https://github.com/gpuweb/gpuweb/blob/main/proposals/immediate-data.md <https://github.com/gpuweb/gpuweb/blob/main/proposals/immediate-data.md> *Specification* https://github.com/gpuweb/gpuweb/pull/5423 <https://github.com/gpuweb/gpuweb/pull/5423> *Summary* Functionality added to the WebGPU spec after its first shipment in a browser. Adds a new immediate address space in WGSL and a setImmediateData() method on render pass, compute pass, and render bundle encoders that allows passing small amounts of frequently-updated data directly to shaders without creating GPU buffer objects or bind groups. This is particularly useful for applications that need to update per-draw parameters such as object indices, material indices, or transformation matrices every draw call, enabling significant performance improvements by avoiding buffer and bind group management overhead. *Blink component* Blink>WebGPU <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EWebGPU%22> *Web Feature ID* webgpu <https://webstatus.dev/features/webgpu> *Motivation* This is particularly useful for applications that need to update per-draw parameters such as object indices, material indices, or transformation matrices every draw call, enabling significant performance improvements by avoiding buffer and bind group management overhead *Initial public proposal* https://github.com/gpuweb/gpuweb/pull/5423 <https://github.com/gpuweb/gpuweb/pull/5423> *TAG review* /No information provided/ *TAG review status* Pending *Goals for experimentation* None *Risks* *Interoperability and Compatibility* This feature has been approved in W3C GPU for the Web WG meetings including participants from WebKit and Firefox: https://github.com/gpuweb/gpuweb/pull/5423 <https://github.com/gpuweb/gpuweb/pull/5423> /Gecko/: Positive (https://github.com/gpuweb/gpuweb/pull/5423#pullrequestreview-42388072000 <https://github.com/gpuweb/gpuweb/pull/5423#pullrequestreview-42388072000>) Approved related WebGPU spec PR. /WebKit/: Positive (https://github.com/gpuweb/gpuweb/pull/5423#issuecomment-3499601340 <https://github.com/gpuweb/gpuweb/pull/5423#issuecomment-3499601340>) (Link above is to near-final review.) Specification approval constitutes a positive signal, per https://github.com/WebKit/standards-positions/issues/294#issuecomment-1877411933 <https://github.com/WebKit/standards-positions/issues/294#issuecomment-1877411933> /Web developers/: Positive https://github.com/gpuweb/gpuweb/issues/75#issuecomment-1092445344 <https://github.com/gpuweb/gpuweb/issues/75#issuecomment-1092445344> /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 <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. https://github.com/gpuweb/cts/pulls?q=is%3Apr+is%3Aclosed+immediates <https://github.com/gpuweb/cts/pulls?q=is%3Apr+is%3Aclosed+immediates> *Flag name on about://flags* /No information provided/ *Finch feature name* UnsafeFeatures *Rollout plan* Will ship enabled for all users *Requires code in //chrome?* False *Tracking bug* https://issues.chromium.org/issues/366291600 <https://issues.chromium.org/issues/366291600> *Availability expectation* 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. *Estimated milestones* No milestones specified *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). /No information provided/ *Link to entry on the Chrome Platform Status* https://chromestatus.com/feature/5199437611794432?gate=6420569794936832 <https://chromestatus.com/feature/5199437611794432?gate=6420569794936832> This intent message was generated by Chrome Platform Status <https://chromestatus.com>. --You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/55f6c341-6dc1-4b39-905d-41e4d2058992n%40chromium.org <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/55f6c341-6dc1-4b39-905d-41e4d2058992n%40chromium.org?utm_medium=email&utm_source=footer>.
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