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Paint worklets: speculatively draw a paint image #17486

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asajeffrey opened this issue Jun 23, 2017 · 0 comments · Fixed by #17810
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Paint worklets: speculatively draw a paint image #17486

asajeffrey opened this issue Jun 23, 2017 · 0 comments · Fixed by #17810
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A-content/css Interacting with CSS from web content (parsing, serializing, introspection) A-content/script Related to the script thread

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During styling, we know the computed values for properties, so we can speculatively draw the paint image, assuming that the size hasn't changed.
@asajeffrey asajeffrey added A-content/css Interacting with CSS from web content (parsing, serializing, introspection) A-content/script Related to the script thread labels Jun 23, 2017
@asajeffrey asajeffrey self-assigned this Jun 23, 2017
@asajeffrey asajeffrey mentioned this issue Jun 23, 2017
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This was referenced Jul 20, 2017
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bors-servo pushed a commit that referenced this issue Jul 31, 2017
Auto merge of #17810 - asajeffrey:script-paint-worklets-speculative-e…
cf5602e 
…valuation, r=emilio

Script paint worklets speculative evaluation

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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.

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<!-- 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

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This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/17810)
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A-content/css Interacting with CSS from web content (parsing, serializing, introspection) A-content/script Related to the script thread
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Script paint worklets speculative evaluation asajeffrey/servo
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