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Fix input flow event logic#24526
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Add logic to handle the case of touch events that do not lead to frames. Previously, all touch event flow ids were queued in |Animator| until a frame was created, and then flowed into that frame. For no frame touch events, this would then cause metrics and trace visualization to erroneously associate the eventual frame with the original touch events. This issue is fixed by extending the Animator/VsyncWaiter's secondary vsync callback mechanism to support additional callbacks, and then using a secondary vsync callback to drain/end touch flow events when frames finish and no further frames are scheduled. Also add an additional flow step to |SmoothPointerDataDispatcher::DispatchPacket|. b/177250670
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* 4f660da Roll Dart SDK from 63c6585d8499 to 6b7054122356 (1 revision) (flutter/engine#24625) * 25887bc Roll Skia from e79bb32365ea to 4ac9aadd306b (4 revisions) (flutter/engine#24630) * 1bdf5d3 TextStyle level leadingDistribution (flutter/engine#24025) * c4678d6 Fix input flow event logic (flutter/engine#24526)
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Add logic to handle the case of touch events that do not lead to frames.
Previously, all touch event flow ids were queued in |Animator| until a frame
was created, and then flowed into that frame. For no frame touch
events, this would then cause metrics and trace visualization to erroneously
associate the eventual frame with the original touch events. This issue
is fixed by extending the Animator/VsyncWaiter's secondary vsync
callback mechanism to support additional callbacks, and then using a
secondary vsync callback to drain/end touch flow events when frames
finish and no further frames are scheduled.
Also add an additional flow step to
|SmoothPointerDataDispatcher::DispatchPacket|.
b/177250670
Replace this paragraph with a description of what this PR is changing or adding, and why. Consider including before/after screenshots.
List which issues are fixed by this PR. You must list at least one issue.
If you had to change anything in the flutter/tests repo, include a link to the migration guide as per the breaking change policy.
Pre-launch Checklist
writing and running engine tests.
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