Kaushik Iska cad97fe746
Update overlays_gr_context_ correctly (#8175)
There can be cases where SubmitFrame gets called
before overlays are a part of the frame, in these
cases, we should not update the GRContext ahead of time.

This commit makes it so we will update it only when
the frame really shows the overlay.

This addresses: https://github.com/flutter/flutter/issues/28920
2019-03-15 08:35:48 -07:00
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Flow

Flow is a simple compositor based on Skia that the Flutter engine uses to cache recoded paint commands and pixels generated from those recordings. Flow runs on the GPU thread and uploads information to the GPU.