Script paint worklets speculative evaluation #17810
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This PR is dependent on #17634. |
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#17634 landed, so this PR is ready for review! |
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Jul 28, 2017
components/style/traversal.rs
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Are you sure you want this outside of the if compute_self block? Do we really always need to paint it even if the style is the same?
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Also, do you have any numbers on this? |
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@emilio I'm afraid not, to get decent numbers we'd need a page with reasonably complex style/layout and a paint worklet. All the paint worklet demos are quite simple at the moment :/ @bors-servo r=emilio |
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No actual numbers, but at least the cache is doing its job! @bors-servo r=emilio |
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…valuation, r=emilio Script paint worklets speculative evaluation <!-- Please describe your changes on the following line: --> This PR speculatively calls paint worklets during style, which increases the concurrency, since it increases the chance that the cache will have the right result in it when it comes to layout. The speculation is wasted effort if the size of the element has changed, but this is often not the case. --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [X] These changes fix #17486 and #17369. - [X] These changes do not require tests because it's a performance improvement <!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.--> <!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. --> <!-- Reviewable:start --> --- This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/17810) <!-- Reviewable:end -->
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☀️ Test successful - android, arm32, arm64, linux-dev, linux-rel-css, linux-rel-wpt, mac-dev-unit, mac-rel-css1, mac-rel-css2, mac-rel-wpt1, mac-rel-wpt2, mac-rel-wpt3, mac-rel-wpt4, windows-msvc-dev |
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This PR speculatively calls paint worklets during style, which increases the concurrency, since it increases the chance that the cache will have the right result in it when it comes to layout. The speculation is wasted effort if the size of the element has changed, but this is often not the case.
./mach build -ddoes not report any errors./mach test-tidydoes not report any errorsThis change is