[Webkit-unassigned] [Bug 189299] [Web Animations] Implement composite operations

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=189299

Antoine Quint <graouts at webkit.org> changed:

           What    |Removed                     |Added
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         Depends on|                            |242185

--- Comment #7 from Antoine Quint <graouts at webkit.org> ---
Composite operations are now generally supported in WebKit and are enabled in Safari Technology Preview and Safari in macOS 13 and iOS 16 betas.

The remaining blocking bugs paint a picture of outstanding compatibility issues that we are still working on but will be pretty specific to a given CSS property.

The most important thing to be aware of is that properties that can be typically accelerated, such as "opacity", "filter", "transform", "translate", "scale" and "rotate" will not be fully accelerated if composite operations are used. Instead, the animation resolution will operate on the main thread, while the application of the property will operate on a GraphicsLayer. We are continuing to look into how to address this in the future.


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=242185
[Bug 242185] [web-animations] additive/accumulative color blending fails to yield intermediary out-of-bounds values
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