LGTM3 On Thursday, October 17, 2024 at 10:36:59 PM UTC+2 Mike Taylor wrote:
> LGTM2 > On 10/17/24 8:12 AM, Alex Russell wrote: > > LGTM1 > > On Thu, Oct 17, 2024, 5:36 PM 'François Beaufort' via blink-dev < > blink-dev@chromium.org> wrote: > >> Contact emails >> >> fbeauf...@google.com >> >> Explainer >> >> Not all graphics cards and systems have the same capabilities when it >> comes to WebGPU. >> >> To address this, WebGPU has a GPU feature system where developers can >> check if a device supports specific functionalities. >> >> We’re introducing a new “float32-blendable” GPU feature that makes GPU >> textures with formats "r32float", "rg32float", and "rgba32float" blendable. >> >> 32-bit floating-point textures are essential for HDR rendering to >> preserve a wide range of color values and prevent color banding artifacts. >> >> It is also useful for scientific visualization such as radio astronomy >> imaging. >> >> By exposing this capability as a GPU feature, developers can explicitly >> check for "float32-blendable" support and provide fallback solutions or >> alternative rendering paths when necessary. >> >> This ensures consistent and predictable behavior across a diverse range >> of WebGPU implementations. >> >> >> https://github.com/gpuweb/gpuweb/pull/4896/ >> >> Specification >> >> https://www.w3.org/TR/webgpu/#float32-blendable >> >> Summary >> >> Functionality added to the WebGPU spec after its first shipment in a >> browser. >> >> The “float32-blendable” GPU feature makes GPU textures with formats >> "r32float", "rg32float", and "rgba32float" blendable. >> >> Blink component >> >> Blink>WebGPU >> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EWebGPU> >> >> TAG review >> >> None >> >> TAG review status >> >> Not 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/Minutes-2023-04-19#support-blending-32-bit-float-textures-3556 >> >> and https://github.com/gpuweb/gpuweb/pull/4896 >> >> Gecko: No signal (Mozilla members have requested during weekly >> standardization meetings that we postpone filing standard positions until >> we reach Candidate Recommendation (CR) status in Q4.) >> >> WebKit: Positive ( >> https://github.com/WebKit/standards-positions/issues/294#issuecomment-1877411933 >> ) >> >> Web developers: Positive (https://github.com/gpuweb/gpuweb/issues/3556) >> >> 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 through the >> below link: https://github.com/gpuweb/cts/pull/4003 >> >> Flag name on chrome://flags >> >> chrome://flags/#enable-unsafe-webgpu >> >> Finch feature name >> >> WebGPU.Enabled:UnsafeFeatures >> >> Requires code in //chrome? >> >> False >> >> Tracking bug >> >> https://issues.chromium.org/369649348 >> >> Estimated milestones >> >> DevTrial on desktop >> >> 132 >> >> DevTrial on Android >> >> 132 >> >> >> >> >> 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/5173655901044736?gate=5129994471473152 >> >> 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 on the web visit >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAPpwU5%2Bg4W0ruYJZ4-Mbg%2B4yW4vX%3DkpZJdisCg4tBsnUN%3D66%2Bw%40mail.gmail.com >> >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAPpwU5%2Bg4W0ruYJZ4-Mbg%2B4yW4vX%3DkpZJdisCg4tBsnUN%3D66%2Bw%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > 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 on the web visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAA44PQgVKzuQi37FEVmyJiVYVxyYb8cxos8pk9ZjTea9s%3DdW%3Dg%40mail.gmail.com > > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAA44PQgVKzuQi37FEVmyJiVYVxyYb8cxos8pk9ZjTea9s%3DdW%3Dg%40mail.gmail.com?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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