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Correct FrameTimingRecorder's raster start time.#38674

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auto-submit[bot] merged 7 commits into
flutter-team-archive:mainfrom
luckysmg:frame_timing_fix
Jan 13, 2023
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Correct FrameTimingRecorder's raster start time.#38674
auto-submit[bot] merged 7 commits into
flutter-team-archive:mainfrom
luckysmg:frame_timing_fix

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@luckysmg

@luckysmg luckysmg commented Jan 6, 2023

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Fix:

The code

auto frame = surface_->AcquireFrame(layer_tree.frame_size());

could be very time-consuming sometimes. I think we should record it into raster time. So that we can observe this correctly using DevTools or addTimingCallback of framework side.

Preview

DevTools

Before patch:

Before.mp4

After patch:

After.mp4

Checklist

  • I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
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  • I listed at least one issue that this PR fixes in the description above.
  • I added new tests to check the change I am making or feature I am adding, or Hixie said the PR is test-exempt. See [testing the engine] for instructions on writing and running engine tests.
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It looks like this pull request may not have tests. Please make sure to add tests before merging. If you need an exemption to this rule, contact Hixie on the #hackers channel in Chat (don't just cc him here, he won't see it! He's on Discord!).

If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix?

Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing.

@luckysmg luckysmg changed the title Fix FrameTimingRecorder's raster start time correctly. Fix FrameTimingRecorder's raster start time. Jan 7, 2023
@luckysmg luckysmg requested a review from chinmaygarde January 7, 2023 09:42
@luckysmg luckysmg changed the title Fix FrameTimingRecorder's raster start time. Correct FrameTimingRecorder's raster start time and add missing trace events. Jan 8, 2023
@luckysmg luckysmg changed the title Correct FrameTimingRecorder's raster start time and add missing trace events. Correct FrameTimingRecorder's raster start time. Jan 8, 2023
@achillelrc

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looks promising bro thanks for the work @luckysmg

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3 participants