> On May 3, 2021, at 9:58 AM, Simon Fraser via webkit-dev > <webkit-dev@lists.webkit.org> wrote: > > >> On May 1, 2021, at 10:07 AM, Aaron Krajeski via webkit-dev >> <webkit-dev@lists.webkit.org <mailto: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.
^ On this one I’ll add, it would be better if this could reuse the existing CSS or SVG ways of describing a filter instead of adding a novel way. In addition, the filter syntax here is strictly less expressive than SVG filters; it appears to only support a linear filter chain, rather than a filter graph like SVG does. > > 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 <mailto:webkit-dev@lists.webkit.org> >> https://lists.webkit.org/mailman/listinfo/webkit-dev > > _______________________________________________ > webkit-dev mailing list > webkit-dev@lists.webkit.org > https://lists.webkit.org/mailman/listinfo/webkit-dev
_______________________________________________ webkit-dev mailing list webkit-dev@lists.webkit.org https://lists.webkit.org/mailman/listinfo/webkit-dev
