LGTM2 On Wed, Jun 24, 2026 at 10:28 AM Alex Russell <[email protected]> wrote:
> LGTM1 > > On Wednesday, June 24, 2026 at 1:37:02 AM UTC-7 Chromestatus wrote: > >> *Contact emails* >> [email protected] >> >> *Explainer* >> *No information provided* >> >> *Specification* >> https://github.com/gpuweb/gpuweb/pull/5578 >> >> *Summary* >> Adds the optional GPU feature "subgroup-size-control" that allows >> explicitly setting the subgroup size in a compute shader. This technique is >> particularly useful for the applications that need to optimize the >> performance of the compute shader using subgroup operations with specifc >> subgroup size on certain platforms, such as the AI workloads. >> >> *Blink component* >> Blink>WebGPU >> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EWebGPU%22> >> >> *Web Feature ID* >> Missing feature >> >> *Motivation* >> Adds the optional GPU feature "subgroup-size-control" that allows >> explicitly setting the subgroup size in a compute shader. This technique is >> particularly useful for the applications that need to optimize the >> performance of the compute shader using subgroup operations with specifc >> subgroup size on certain platforms, such as the AI workloads. >> >> *Initial public proposal* >> *No information provided* >> >> *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 Safari and Firefox: >> https://github.com/gpuweb/gpuweb/wiki/GPU-Web-2026%E2%80%9006%E2%80%9023-WGSL#add-extension-subgroup-size-control-5578 >> >> *Gecko*: Positive (https://github.com/gpuweb/gpuweb/pull/5578) "Feedback >> indicated via WebGPU standardization process." >> >> *WebKit*: Positive (https://github.com/gpuweb/gpuweb/pull/5578) >> "Specification >> approval constitutes a positive signal, per >> 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 >> Will immediately be available on Android, Android WebView, ChromeOS, >> Linux and Windows, where hardware support is available. >> >> *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/issues/4640 >> >> *Flag name on about://flags* >> *No information provided* >> >> *Finch feature name* >> *No information provided* >> >> *Non-finch justification* >> *No information provided* >> >> *Rollout plan* >> Will ship enabled for all users >> >> *Requires code in //chrome?* >> False >> >> *Tracking bug* >> https://issues.chromium.org/issues/463721943 >> >> *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/5077657663438848?gate=6732991276646400 >> >> 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/82728a9c-a542-4e7f-81ad-0f4eb955915an%40chromium.org > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/82728a9c-a542-4e7f-81ad-0f4eb955915an%40chromium.org?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. 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