LGTM2. I think you already filled out the Adoption gate, but can you also request review (or NA) for it as well
On Wednesday, September 23, 2026 at 10:59:26 AM UTC-4 Rick Byers wrote: > Seems like a minor (low-risk) but valuable change to me. LGTM1 > > On Mon, Sep 21, 2026 at 1:21 PM 'Corentin Wallez' via blink-dev < > [email protected]> wrote: > >> Hey Alex, >> >> Correct! It would improve the compression fidelity of these formats (so >> only the loss from the format is there, not the loss from resizing), which >> will allow uses in more places, resulting in GPU memory gains. (most >> commonly 4x, up to 16x). >> >> Cheers, >> >> Corentin >> >> On Mon, Sep 21, 2026 at 8:48 PM Alex Russell <[email protected]> >> wrote: >> >>> Hey Corentin, >>> >>> For those of us who are not in the WebGPU head-space all day, is it fair >>> to summarize this feature as improving memory use and compression fidelity >>> for certain GPU image formats? >>> >>> Best, >>> >>> Alex >>> >>> On Friday, September 18, 2026 at 9:43:05 AM UTC-7 Chromestatus wrote: >>> >>>> *Contact emails* >>>> [email protected] >>>> >>>> *Explainer* >>>> >>>> https://gpuweb.github.io/gpuweb/#dom-gpufeaturename-texture-compression-unaligned >>>> >>>> *Specification* >>>> >>>> https://gpuweb.github.io/gpuweb/#dom-gpufeaturename-texture-compression-unaligned >>>> >>>> >>>> *Summary* >>>> Compressed texture (using the BC, ETC or ASTC formats) in unextended >>>> WebGPU must have a size that's a multiple of the block size (4x4 or up to >>>> 12x12). This is very constraining when compressing arbitrary images as a >>>> resizing step must happen which looses high-frequency information. Most >>>> hardware supports compressed textures with partial blocks at the border >>>> such that the textures can have any size, removing this issue. >>>> >>>> *Blink component* >>>> Blink>WebGPU >>>> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EWebGPU%22> >>>> >>>> *Web Feature ID* >>>> webgpu <https://webstatus.dev/features/webgpu> >>>> >>>> *Motivation* >>>> Compressed texture (using the BC, ETC or ASTC formats) in unextended >>>> WebGPU must have a size that's a multiple of the block size (4x4 or up to >>>> 12x12). This is very constraining when compressing arbitrary images as a >>>> resizing step must happen which looses high-frequency information. Most >>>> hardware supports compressed textures with partial blocks at the border >>>> such that the textures can have any size, removing this issue. >>>> >>>> *Initial public proposal* >>>> https://github.com/gpuweb/gpuweb/issues/2006 >>>> >>>> *TAG review* >>>> *No information provided* >>>> >>>> *TAG review status* >>>> Not applicable >>>> >>>> *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. >>>> >>>> *Gecko*: No signal (https://github.com/gpuweb/gpuweb/pull/6312) >>>> Implementation >>>> is ongoing https://github.com/gfx-rs/wgpu/pull/10247 Feedback >>>> indicated via WebGPU standardization process. >>>> >>>> *WebKit*: Positive (https://github.com/gpuweb/gpuweb/pull/6312) >>>> Specification >>>> approval constitutes a positive signal, per >>>> https://github.com/WebKit/standards-positions/issues/294#issuecomment-1877411933 >>>> >>>> *Web developers*: Positive ( >>>> https://github.com/gpuweb/gpuweb/issues/2006#issuecomment-2910632703) >>>> Bevy, >>>> Unity, Spark.js positive about this feature. >>>> >>>> *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)?* >>>> Yes >>>> All platforms have support, 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. >>>> >>>> *Flag name on about://flags* >>>> *No information provided* >>>> >>>> *Finch feature name* >>>> WebGPUEnabledEnabledToggles >>>> >>>> *Rollout plan* >>>> Will ship enabled for all users >>>> >>>> *Requires code in //chrome?* >>>> False >>>> >>>> *Tracking bug* >>>> https://crbug.com/528245806 >>>> >>>> *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/5080544005193728?gate=6068538249969664 >>>> >>>> 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/CAGdfWNNnCVe5QWrHFrsjbUjcyYFiR5ZbhqB38bj27RCm4k_wZA%40mail.gmail.com >> >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAGdfWNNnCVe5QWrHFrsjbUjcyYFiR5ZbhqB38bj27RCm4k_wZA%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 [email protected]. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/e70cbaab-f5cc-4fb6-af66-581e934e475fn%40chromium.org.
