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flutter_flutter/engine/src
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Jonah Williams 7e99b7f8b3
[Impeller] let drawImage nine use porter duff optimization. (#169611) 
Fixes https://github.com/flutter/flutter/issues/169492

Currently we apply a color filter nine times for the drawImageNine
calls, which is very expensive. We can do the same porterduff
optimization we did for flame for drawImage nine by allowing the porter
duff shader to specify a strict src rect.

### Before


![flutter_04](https://github.com/user-attachments/assets/006c89ad-14a6-4387-9bfb-f6be357f43d6)

### After


![flutter_03](https://github.com/user-attachments/assets/e058d86e-7f1a-4708-bb40-8746bb9199e4)
2025-05-29 22:08:29 +00:00
..
build
Modernize system executable detection across components (#169018)
2025-05-19 18:03:16 +00:00
build_overrides
…
flutter
[Impeller] let drawImage nine use porter duff optimization. (#169611)
2025-05-29 22:08:29 +00:00
tools/dart
…
.clang-format
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.gitattributes
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.gitignore
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.gn
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AUTHORS
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BUILD.gn
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LICENSE
Merge flutter/engine into framework
2024-12-17 14:00:52 -08:00
README.md
Migrate in-comment links of the flutter/engine repository to the flutter/flutter repository (#166790)
2025-04-10 15:58:23 +00:00

README.md

OpenSSF Scorecard

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.