Fixes https://github.com/flutter/flutter/issues/163421 If we restore to the onscreen but need to generate mips (because its a toImage call) then we could miss the mip map generation. This will primarily happen on Android emulators as they do not support framebuffer fetch.
buildroot
Build environment for the Flutter engine
This repository is used by the flutter/engine repository. For instructions on how to use it, see that repository's CONTRIBUTING.md file.
To update your checkout to use the latest buildroot, run gclient sync.
To submit patches to this buildroot repository, create a branch, push to that branch, then submit a PR on GitHub for that branch.
To point the engine to a new version of buildroot after your patch is merged, update the buildroot hash in the engine's DEPS file.