Contact emailsfbeauf...@google.com ExplainerThe GPUAdapter isFallbackAdapter boolean attribute currently shipped in Chrome browser only does not allow libraries that take user-provided GPUDevice objects from accessing this information through the adapterInfo attribute on GPUDevice. Adding a GPUAdapterInfo isFallbackAdapter boolean attribute solves this problem. Note that GPUAdapter isFallbackAdapter usage is being measured to determine if it can be deprecated and removed, as Chrome has not yet shipped support for fallback adapters.
https://github.com/gpuweb/gpuweb/pull/5099 Specification https://gpuweb.github.io/gpuweb/#dom-gpuadapterinfo-isfallbackadapter Summary Functionality added to the WebGPU spec after its first shipment in a browser. The GPUAdapterInfo isFallbackAdapter boolean attribute indicates if an adapter has significant performance limitations in return for wider compatibility, more predictable behavior, and/or improved privacy. Note that a fallback adapter may not be present on all systems. Blink componentBlink>WebGPU <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EWebGPU%22> TAG reviewNone TAG review statusNot applicable Risks Interoperability and Compatibility This feature has not yet been implemented 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-2025-03-05#move-isfallbackadapter-into-gpuadapterinfo-4971 and https://github.com/gpuweb/gpuweb/pull/5099#issuecomment-2737426600 *Gecko*: No signal Mozilla members have requested during weekly standardization meetings that we don't file standard positions anymore as we reached Candidate Recommendation (CR) status. *WebKit*: Closed Without a Position ( https://github.com/WebKit/standards-positions/issues/294#issuecomment-1877411933 ) *Web developers*: Positive (https://github.com/gpuweb/gpuweb/issues/4971) *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)?No 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/issues/2356 Flag name on about://flagsExperimental Web Platform Features Finch feature nameWebGPUAdapterInfoIsFallbackAdapter Requires code in //chrome?False Tracking bughttps://issues.chromium.org/issues/403172841 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). None Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5188955424948224?gate=5167533973569536 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 blink-dev+unsubscr...@chromium.org. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAPpwU5JSUxkXG%3DchgyHwfpAsw7O3BP_w39-AcsmfTN2h%2BkPRnw%40mail.gmail.com.
