> On May 1, 2021, at 10:07 AM, Aaron Krajeski via webkit-dev > <webkit-dev@lists.webkit.org> wrote: > > Hi webkit-dev, > > This is a request for WebKit's position on New Canvas 2D API > <https://github.com/fserb/canvas2D/blob/master/rationale.md> features. > > Explainer/Chrome Dev Summit Video > https://github.com/fserb/canvas2d <https://github.com/fserb/canvas2d> > https://youtu.be/dfOKFSDG7IM <https://youtu.be/dfOKFSDG7IM> > > Summary > Updated functionality for the Canvas2D API. Adds nine new features/functions > to CanvasRenderingContext2D: > - "ContextLost" and "ContextRestored" events
Seems reasonable. > - "willReadFrequently" option for canvases where lots of readback is > expected Seems reasonable. > - CSSColorValues as style inputs Seems reasonable (gated on Typed OM support). > - More CSS text modifier support WebKit has already expressed support for the proposal. > - A reset function We'e already expressed some concerns in the issue. > - A roundRect draw primitive Seems reasonable. > - Full 4x4 transformation matrices WebKit's architecture on macOS/iOS currently has no way to render these, so we don't support this proposal at this time. > - Conic gradients Seems reasonable. > - Better support for SVG filters Seems reasonable, although this would have performance implications in our current architecture. Simon > > Contact emails > aaro...@chromium.org <mailto:aaro...@chromium.org>, fs...@chromium.org > <mailto:fs...@chromium.org> > > Spec and tests > - WHATWG spec in progress: > Text Modifiers <https://github.com/whatwg/html/pull/6560> > Filters <https://github.com/web-platform-tests/wpt> > Perspective Transforms <https://github.com/whatwg/html/issues/5620> > reset() <https://github.com/whatwg/html/issues/5618> > CSSColorValue <https://github.com/whatwg/html/issues/5616> > willReadFrequently <https://github.com/whatwg/html/issues/5614> > RoundRect <https://github.com/whatwg/html/issues/5619> > ConicGradient <https://github.com/whatwg/html/issues/5431> > Context Loss <https://github.com/whatwg/html/issues/4809> > - MDN spec > Conic gradient > <https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/createConicGradient> > Text Modifiers > <https://github.com/GoogleChromeLabs/puppy-content/pull/23> (via > ChromeLabs/puppy-content) > - Web platform tests > RoundRect > <https://github.com/web-platform-tests/wpt/tree/7b0ebaccc62b566a1965396e5be7bb2bc06f841f/html/canvas/element/path-objects> > reset() > <https://github.com/web-platform-tests/wpt/tree/master/html/canvas/element/reset> > Perspective Transforms > <https://github.com/web-platform-tests/wpt/tree/master/html/canvas/element/transformations> > Context Loss > <https://source.chromium.org/chromium/chromium/src/+/master:third_party/blink/web_tests/fast/canvas/canvas-lost-gpu-context.html?q=f:web_tests%20canvas%20context%20lost&sq=package:chromium> > (this is not testable on WPT) > Filters > <https://github.com/web-platform-tests/wpt/tree/master/html/canvas/element/shadows> > CSSColorValue Input > <https://chromium-review.googlesource.com/c/chromium/src/+/2794982> > WillReadFrequently > <https://source.chromium.org/chromium/chromium/src/+/master:third_party/blink/web_tests/fast/canvas/OffscreenCanvas-2d-willReadFrequently.html?q=f:web_tests%20canvas%20willreadfrequently&sq=package:chromium> > (testable in WPT, work in progress to add tests there) > Conic Gradient > <https://github.com/web-platform-tests/wpt/blob/master/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.html> > Text Modifiers > <https://github.com/web-platform-tests/wpt/tree/master/html/canvas/element/drawing-text-to-the-canvas> > - Chrome Status <https://chromestatus.com/feature/6051647656558592> > > Look forward to hearing your feedback! > > Cheers! > Aaron > _______________________________________________ > webkit-dev mailing list > webkit-dev@lists.webkit.org > https://lists.webkit.org/mailman/listinfo/webkit-dev
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