[flutter_tools] Support flavors and transformers for shaders by Laurie-Lin · Pull Request #181889 · flutter/flutter

Laurie-Lin · 2026-02-04T05:11:41Z

This PR adds support for transformers on entries under flutter: shaders: in pubspec.yaml, bringing it closer to the existing assets entry model.

When a shader entry declares transformers, Flutter tools will run the transformer chain prior to shader compilation (Impeller/impellerc). This is wired through the build/bundle paths as well as DevFS shader recompilation during hot reload, so transformed sources are consistently used.

Fixes #181888

Testing

cd $FLUTTER_ROOT/packages/flutter_tools
../../bin/flutter test test/general.shard/flutter_manifest_test.dart test/general.shard/build_system/targets/assets_test.dart -r expanded

Pre-launch Checklist

I read the Contributor Guide and followed the process outlined there for submitting PRs.
I read the Tree Hygiene wiki page, which explains my responsibilities.
I read and followed the Flutter Style Guide, including Features we expect every widget to implement.
I signed the CLA.
I listed at least one issue that this PR fixes in the description above.
I updated/added relevant documentation (doc comments with ///).
I added new tests to check the change I am making, or this PR is test-exempt.
I followed the breaking change policy and added Data Driven Fixes where supported.
All existing and new tests are passing.

gemini-code-assist

Code Review

This pull request adds support for transformers to shader entries in pubspec.yaml, aligning them with the existing asset entry model. The changes correctly wire this through the build/bundle paths and DevFS for hot reload. The implementation is solid and well-tested. My main feedback is to address some code duplication in the shader transformation logic to improve maintainability.

bkonyi · 2026-02-09T15:53:03Z

Thanks for your contribution, @Laurie-Lin!

This LGTM overall (although there are some analysis failures that need to be resolved), but we'll need a second set of eyes on this before it can be approved.

chingjun

Mostly LGTM other than stricter input check needed.

Also, can we add tests for the changes in bundle_builder.dart and devfs.dart? Thanks!

bkonyi · 2026-02-24T15:41:33Z

Thanks for adding flavors and platform support here!

There's some analysis failures that need to be resolved, but this looks good to me once they're resolved:

   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/lib/src/build_system/targets/assets.dart:157:15 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/lib/src/build_system/targets/assets.dart:160:23 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/lib/src/bundle_builder.dart:208:15 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/lib/src/bundle_builder.dart:210:23 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:244:17 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:300:17 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:360:17 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:511:13 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:546:15 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:583:26 • omit_obvious_local_variable_types
   info • Unnecessary use of a null check ('!') • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:597:59 • unnecessary_null_checks
   info • Unnecessary use of a null check ('!') • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:601:41 • unnecessary_null_checks
   info • Unnecessary use of a null check ('!') • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:602:46 • unnecessary_null_checks

Laurie-Lin · 2026-03-10T04:47:26Z

Thanks for adding flavors and platform support here!

There's some analysis failures that need to be resolved, but this looks good to me once they're resolved:

   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/lib/src/build_system/targets/assets.dart:157:15 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/lib/src/build_system/targets/assets.dart:160:23 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/lib/src/bundle_builder.dart:208:15 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/lib/src/bundle_builder.dart:210:23 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:244:17 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:300:17 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:360:17 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:511:13 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:546:15 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:583:26 • omit_obvious_local_variable_types
   info • Unnecessary use of a null check ('!') • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:597:59 • unnecessary_null_checks
   info • Unnecessary use of a null check ('!') • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:601:41 • unnecessary_null_checks
   info • Unnecessary use of a null check ('!') • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:602:46 • unnecessary_null_checks

OK, I'm starting to work on fixing these warnings.

Laurie-Lin · 2026-03-10T14:09:20Z

Thanks for adding flavors and platform support here!

There's some analysis failures that need to be resolved, but this looks good to me once they're resolved:

   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/lib/src/build_system/targets/assets.dart:157:15 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/lib/src/build_system/targets/assets.dart:160:23 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/lib/src/bundle_builder.dart:208:15 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/lib/src/bundle_builder.dart:210:23 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:244:17 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:300:17 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:360:17 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:511:13 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:546:15 • omit_obvious_local_variable_types
   info • Omit the type annotation on a local variable when the type is obvious • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:583:26 • omit_obvious_local_variable_types
   info • Unnecessary use of a null check ('!') • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:597:59 • unnecessary_null_checks
   info • Unnecessary use of a null check ('!') • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:601:41 • unnecessary_null_checks
   info • Unnecessary use of a null check ('!') • packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart:602:46 • unnecessary_null_checks

Done, I fixed the analysis issues and reran targeted analysis on the affected files.

# dart analyze \
  packages/flutter_tools/lib/src/build_system/targets/assets.dart \
  packages/flutter_tools/lib/src/bundle_builder.dart \
  packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart
Analyzing assets.dart, bundle_builder.dart, assets_test.dart... 0.5s
No issues found!

@bkonyi

bkonyi

Looks good to me! Just need signoff from @chingjun before we can submit this.

chingjun

LGTM, thanks for adding the support for flavors and platforms!

flutter/flutter#181889)

Roll Flutter from 732e05dd483c to d117642c18e0 (47 revisions) flutter/flutter@732e05d...d117642 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from fa3bb1f60d99 to dba893a44d7a (1 revision) (flutter/flutter#183783) 2026-03-17 41930132+hellohuanlin@users.noreply.github.com [ios][pv]fix admob banner scrollable on ios 18.2 (flutter/flutter#183274) 2026-03-17 engine-flutter-autoroll@skia.org Roll Packages from 0f2eeae to a9d36fb (2 revisions) (flutter/flutter#183782) 2026-03-17 mdebbar@google.com Update goldctl version (flutter/flutter#183538) 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from 69be1087807b to fa3bb1f60d99 (1 revision) (flutter/flutter#183779) 2026-03-17 engine-flutter-autoroll@skia.org Roll Dart SDK from 38dedf00c2cd to 30cdd2634429 (1 revision) (flutter/flutter#183778) 2026-03-17 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from s7rq9m8tH2aZtX-kP... to zYBvfzIH95BY3cCzL... (flutter/flutter#183777) 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from 4ea039236580 to 69be1087807b (2 revisions) (flutter/flutter#183772) 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from fb402093cfb5 to 4ea039236580 (1 revision) (flutter/flutter#183770) 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from d6bc6d17d637 to fb402093cfb5 (8 revisions) (flutter/flutter#183765) 2026-03-17 engine-flutter-autoroll@skia.org Roll Dart SDK from ff50ab8ecea4 to 38dedf00c2cd (2 revisions) (flutter/flutter#183764) 2026-03-17 robert.ancell@canonical.com Wrap EGL image usage in a GObject (flutter/flutter#183539) 2026-03-17 30870216+gaaclarke@users.noreply.github.com Adds platform_view_test_macos_impeller (flutter/flutter#183760) 2026-03-17 30870216+gaaclarke@users.noreply.github.com Adds flush to metal screenshotter. (flutter/flutter#183758) 2026-03-16 robert.ancell@canonical.com Add a platform OpenGL context. (flutter/flutter#183715) 2026-03-16 123626410+sanketudaypatil@users.noreply.github.com Fix formatting, capitalization, and grammar in activation issue template (flutter/flutter#183061) 2026-03-16 engine-flutter-autoroll@skia.org Roll Dart SDK from 4a6febbf882e to ff50ab8ecea4 (2 revisions) (flutter/flutter#183739) 2026-03-16 kevin.lamenzo@gmail.com docs: add code review guidance to CONTRIBUTING.md (flutter/flutter#182778) 2026-03-16 737941+loic-sharma@users.noreply.github.com Filter 'waiting for customer response' issues from macOS triage (flutter/flutter#183552) 2026-03-16 30870216+gaaclarke@users.noreply.github.com Adds github action to reset cicd when new branches come (flutter/flutter#183675) 2026-03-16 30870216+gaaclarke@users.noreply.github.com Adds macos impeller complex layout performance test (flutter/flutter#183669) 2026-03-16 engine-flutter-autoroll@skia.org Roll Dart SDK from b74e5b537d71 to 4a6febbf882e (2 revisions) (flutter/flutter#183695) 2026-03-16 jason-simmons@users.noreply.github.com Use properties to configure leak_tracking and test_randomization_off in .ci.yaml (flutter/flutter#183605) 2026-03-16 srawlins@google.com [flutter_tools] Avoid File.exists and File.stat, as per enforced lint rule (flutter/flutter#183463) 2026-03-16 eyas.sharaiha@gmail.com Properly parse URIs for testPath when the host is running on Windows. (flutter/flutter#176881) 2026-03-16 engine-flutter-autoroll@skia.org Roll Packages from 91f7c33 to 0f2eeae (6 revisions) (flutter/flutter#183730) 2026-03-16 engine-flutter-autoroll@skia.org Roll Skia from a6ccaf95c6e0 to d6bc6d17d637 (5 revisions) (flutter/flutter#183726) 2026-03-16 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from WOfyEFkxf9JX26VS-... to s7rq9m8tH2aZtX-kP... (flutter/flutter#183723) 2026-03-15 engine-flutter-autoroll@skia.org Roll Skia from 34ace196b838 to a6ccaf95c6e0 (2 revisions) (flutter/flutter#183712) 2026-03-14 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from vAWG8mRvsQHblDBsy... to WOfyEFkxf9JX26VS-... (flutter/flutter#183694) 2026-03-14 engine-flutter-autoroll@skia.org Roll Skia from 06106120c6bf to 34ace196b838 (1 revision) (flutter/flutter#183677) 2026-03-14 engine-flutter-autoroll@skia.org Roll Dart SDK from 6a3dc9d4f881 to b74e5b537d71 (2 revisions) (flutter/flutter#183676) 2026-03-14 jacksongardner@google.com Add some quality of life improvements to the release GitHub workflows. (flutter/flutter#183658) 2026-03-14 ishaquehassan@gmail.com Fix RouteAware.didPushNext documentation inaccuracy (flutter/flutter#183097) 2026-03-13 30870216+gaaclarke@users.noreply.github.com Adds complex layout impeller startup benchmark (flutter/flutter#183655) 2026-03-13 30870216+gaaclarke@users.noreply.github.com Adds switch for sdf rendering plus golden tests (flutter/flutter#183543) 2026-03-13 30870216+gaaclarke@users.noreply.github.com Made complex_layout_scroll_perf explicitly skia (flutter/flutter#183663) 2026-03-13 47866232+chunhtai@users.noreply.github.com Update android integration test to match the current android semantics (flutter/flutter#183548) 2026-03-13 engine-flutter-autoroll@skia.org Roll Skia from 6c0346103c24 to 06106120c6bf (3 revisions) (flutter/flutter#183654) 2026-03-13 engine-flutter-autoroll@skia.org Roll Dart SDK from d5f6d3c17499 to 6a3dc9d4f881 (1 revision) (flutter/flutter#183652) 2026-03-13 108678139+manu-sncf@users.noreply.github.com Fix PinnedHeaderSliver semantics focus capture (flutter/flutter#179023) 2026-03-13 jhy03261997@gmail.com [a11y][android] In Android 16, sendWindowContentChangeEvent when check state changes (flutter/flutter#183606) 2026-03-13 1063596+reidbaker@users.noreply.github.com Update gradle utils to know about kgp 2.3.10 constraints (flutter/flutter#183416) 2026-03-13 engine-flutter-autoroll@skia.org Roll Skia from 029229d8be91 to 6c0346103c24 (5 revisions) (flutter/flutter#183648) 2026-03-13 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from jJbpv4J_tjW-wuKDq... to vAWG8mRvsQHblDBsy... (flutter/flutter#183646) 2026-03-13 mengyanshou@gmail.com [flutter_tools] Support flavors and transformers for shaders (flutter/flutter#181889) ...

…r#11276) Roll Flutter from 732e05dd483c to d117642c18e0 (47 revisions) flutter/flutter@732e05d...d117642 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from fa3bb1f60d99 to dba893a44d7a (1 revision) (flutter/flutter#183783) 2026-03-17 41930132+hellohuanlin@users.noreply.github.com [ios][pv]fix admob banner scrollable on ios 18.2 (flutter/flutter#183274) 2026-03-17 engine-flutter-autoroll@skia.org Roll Packages from 0f2eeae to a9d36fb (2 revisions) (flutter/flutter#183782) 2026-03-17 mdebbar@google.com Update goldctl version (flutter/flutter#183538) 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from 69be1087807b to fa3bb1f60d99 (1 revision) (flutter/flutter#183779) 2026-03-17 engine-flutter-autoroll@skia.org Roll Dart SDK from 38dedf00c2cd to 30cdd2634429 (1 revision) (flutter/flutter#183778) 2026-03-17 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from s7rq9m8tH2aZtX-kP... to zYBvfzIH95BY3cCzL... (flutter/flutter#183777) 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from 4ea039236580 to 69be1087807b (2 revisions) (flutter/flutter#183772) 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from fb402093cfb5 to 4ea039236580 (1 revision) (flutter/flutter#183770) 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from d6bc6d17d637 to fb402093cfb5 (8 revisions) (flutter/flutter#183765) 2026-03-17 engine-flutter-autoroll@skia.org Roll Dart SDK from ff50ab8ecea4 to 38dedf00c2cd (2 revisions) (flutter/flutter#183764) 2026-03-17 robert.ancell@canonical.com Wrap EGL image usage in a GObject (flutter/flutter#183539) 2026-03-17 30870216+gaaclarke@users.noreply.github.com Adds platform_view_test_macos_impeller (flutter/flutter#183760) 2026-03-17 30870216+gaaclarke@users.noreply.github.com Adds flush to metal screenshotter. (flutter/flutter#183758) 2026-03-16 robert.ancell@canonical.com Add a platform OpenGL context. (flutter/flutter#183715) 2026-03-16 123626410+sanketudaypatil@users.noreply.github.com Fix formatting, capitalization, and grammar in activation issue template (flutter/flutter#183061) 2026-03-16 engine-flutter-autoroll@skia.org Roll Dart SDK from 4a6febbf882e to ff50ab8ecea4 (2 revisions) (flutter/flutter#183739) 2026-03-16 kevin.lamenzo@gmail.com docs: add code review guidance to CONTRIBUTING.md (flutter/flutter#182778) 2026-03-16 737941+loic-sharma@users.noreply.github.com Filter 'waiting for customer response' issues from macOS triage (flutter/flutter#183552) 2026-03-16 30870216+gaaclarke@users.noreply.github.com Adds github action to reset cicd when new branches come (flutter/flutter#183675) 2026-03-16 30870216+gaaclarke@users.noreply.github.com Adds macos impeller complex layout performance test (flutter/flutter#183669) 2026-03-16 engine-flutter-autoroll@skia.org Roll Dart SDK from b74e5b537d71 to 4a6febbf882e (2 revisions) (flutter/flutter#183695) 2026-03-16 jason-simmons@users.noreply.github.com Use properties to configure leak_tracking and test_randomization_off in .ci.yaml (flutter/flutter#183605) 2026-03-16 srawlins@google.com [flutter_tools] Avoid File.exists and File.stat, as per enforced lint rule (flutter/flutter#183463) 2026-03-16 eyas.sharaiha@gmail.com Properly parse URIs for testPath when the host is running on Windows. (flutter/flutter#176881) 2026-03-16 engine-flutter-autoroll@skia.org Roll Packages from 91f7c33 to 0f2eeae (6 revisions) (flutter/flutter#183730) 2026-03-16 engine-flutter-autoroll@skia.org Roll Skia from a6ccaf95c6e0 to d6bc6d17d637 (5 revisions) (flutter/flutter#183726) 2026-03-16 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from WOfyEFkxf9JX26VS-... to s7rq9m8tH2aZtX-kP... (flutter/flutter#183723) 2026-03-15 engine-flutter-autoroll@skia.org Roll Skia from 34ace196b838 to a6ccaf95c6e0 (2 revisions) (flutter/flutter#183712) 2026-03-14 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from vAWG8mRvsQHblDBsy... to WOfyEFkxf9JX26VS-... (flutter/flutter#183694) 2026-03-14 engine-flutter-autoroll@skia.org Roll Skia from 06106120c6bf to 34ace196b838 (1 revision) (flutter/flutter#183677) 2026-03-14 engine-flutter-autoroll@skia.org Roll Dart SDK from 6a3dc9d4f881 to b74e5b537d71 (2 revisions) (flutter/flutter#183676) 2026-03-14 jacksongardner@google.com Add some quality of life improvements to the release GitHub workflows. (flutter/flutter#183658) 2026-03-14 ishaquehassan@gmail.com Fix RouteAware.didPushNext documentation inaccuracy (flutter/flutter#183097) 2026-03-13 30870216+gaaclarke@users.noreply.github.com Adds complex layout impeller startup benchmark (flutter/flutter#183655) 2026-03-13 30870216+gaaclarke@users.noreply.github.com Adds switch for sdf rendering plus golden tests (flutter/flutter#183543) 2026-03-13 30870216+gaaclarke@users.noreply.github.com Made complex_layout_scroll_perf explicitly skia (flutter/flutter#183663) 2026-03-13 47866232+chunhtai@users.noreply.github.com Update android integration test to match the current android semantics (flutter/flutter#183548) 2026-03-13 engine-flutter-autoroll@skia.org Roll Skia from 6c0346103c24 to 06106120c6bf (3 revisions) (flutter/flutter#183654) 2026-03-13 engine-flutter-autoroll@skia.org Roll Dart SDK from d5f6d3c17499 to 6a3dc9d4f881 (1 revision) (flutter/flutter#183652) 2026-03-13 108678139+manu-sncf@users.noreply.github.com Fix PinnedHeaderSliver semantics focus capture (flutter/flutter#179023) 2026-03-13 jhy03261997@gmail.com [a11y][android] In Android 16, sendWindowContentChangeEvent when check state changes (flutter/flutter#183606) 2026-03-13 1063596+reidbaker@users.noreply.github.com Update gradle utils to know about kgp 2.3.10 constraints (flutter/flutter#183416) 2026-03-13 engine-flutter-autoroll@skia.org Roll Skia from 029229d8be91 to 6c0346103c24 (5 revisions) (flutter/flutter#183648) 2026-03-13 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from jJbpv4J_tjW-wuKDq... to vAWG8mRvsQHblDBsy... (flutter/flutter#183646) 2026-03-13 mengyanshou@gmail.com [flutter_tools] Support flavors and transformers for shaders (flutter/flutter#181889) ...

…#181889)  This PR adds support for `transformers` on entries under `flutter: shaders:` in `pubspec.yaml`, bringing it closer to the existing assets entry model. When a shader entry declares transformers, Flutter tools will run the transformer chain prior to shader compilation (Impeller/impellerc). This is wired through the build/bundle paths as well as DevFS shader recompilation during hot reload, so transformed sources are consistently used. Fixes flutter#181888 ## Testing ```bash cd $FLUTTER_ROOT/packages/flutter_tools ../../bin/flutter test test/general.shard/flutter_manifest_test.dart test/general.shard/build_system/targets/assets_test.dart -r expanded ``` ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [x] All existing and new tests are passing.  [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md --------- Co-authored-by: Ben Konyi <bkonyi@google.com>

…r#11276) Roll Flutter from 732e05dd483c to d117642c18e0 (47 revisions) flutter/flutter@732e05d...d117642 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from fa3bb1f60d99 to dba893a44d7a (1 revision) (flutter/flutter#183783) 2026-03-17 41930132+hellohuanlin@users.noreply.github.com [ios][pv]fix admob banner scrollable on ios 18.2 (flutter/flutter#183274) 2026-03-17 engine-flutter-autoroll@skia.org Roll Packages from 0f2eeae to a9d36fb (2 revisions) (flutter/flutter#183782) 2026-03-17 mdebbar@google.com Update goldctl version (flutter/flutter#183538) 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from 69be1087807b to fa3bb1f60d99 (1 revision) (flutter/flutter#183779) 2026-03-17 engine-flutter-autoroll@skia.org Roll Dart SDK from 38dedf00c2cd to 30cdd2634429 (1 revision) (flutter/flutter#183778) 2026-03-17 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from s7rq9m8tH2aZtX-kP... to zYBvfzIH95BY3cCzL... (flutter/flutter#183777) 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from 4ea039236580 to 69be1087807b (2 revisions) (flutter/flutter#183772) 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from fb402093cfb5 to 4ea039236580 (1 revision) (flutter/flutter#183770) 2026-03-17 engine-flutter-autoroll@skia.org Roll Skia from d6bc6d17d637 to fb402093cfb5 (8 revisions) (flutter/flutter#183765) 2026-03-17 engine-flutter-autoroll@skia.org Roll Dart SDK from ff50ab8ecea4 to 38dedf00c2cd (2 revisions) (flutter/flutter#183764) 2026-03-17 robert.ancell@canonical.com Wrap EGL image usage in a GObject (flutter/flutter#183539) 2026-03-17 30870216+gaaclarke@users.noreply.github.com Adds platform_view_test_macos_impeller (flutter/flutter#183760) 2026-03-17 30870216+gaaclarke@users.noreply.github.com Adds flush to metal screenshotter. (flutter/flutter#183758) 2026-03-16 robert.ancell@canonical.com Add a platform OpenGL context. (flutter/flutter#183715) 2026-03-16 123626410+sanketudaypatil@users.noreply.github.com Fix formatting, capitalization, and grammar in activation issue template (flutter/flutter#183061) 2026-03-16 engine-flutter-autoroll@skia.org Roll Dart SDK from 4a6febbf882e to ff50ab8ecea4 (2 revisions) (flutter/flutter#183739) 2026-03-16 kevin.lamenzo@gmail.com docs: add code review guidance to CONTRIBUTING.md (flutter/flutter#182778) 2026-03-16 737941+loic-sharma@users.noreply.github.com Filter 'waiting for customer response' issues from macOS triage (flutter/flutter#183552) 2026-03-16 30870216+gaaclarke@users.noreply.github.com Adds github action to reset cicd when new branches come (flutter/flutter#183675) 2026-03-16 30870216+gaaclarke@users.noreply.github.com Adds macos impeller complex layout performance test (flutter/flutter#183669) 2026-03-16 engine-flutter-autoroll@skia.org Roll Dart SDK from b74e5b537d71 to 4a6febbf882e (2 revisions) (flutter/flutter#183695) 2026-03-16 jason-simmons@users.noreply.github.com Use properties to configure leak_tracking and test_randomization_off in .ci.yaml (flutter/flutter#183605) 2026-03-16 srawlins@google.com [flutter_tools] Avoid File.exists and File.stat, as per enforced lint rule (flutter/flutter#183463) 2026-03-16 eyas.sharaiha@gmail.com Properly parse URIs for testPath when the host is running on Windows. (flutter/flutter#176881) 2026-03-16 engine-flutter-autoroll@skia.org Roll Packages from 91f7c33 to 0f2eeae (6 revisions) (flutter/flutter#183730) 2026-03-16 engine-flutter-autoroll@skia.org Roll Skia from a6ccaf95c6e0 to d6bc6d17d637 (5 revisions) (flutter/flutter#183726) 2026-03-16 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from WOfyEFkxf9JX26VS-... to s7rq9m8tH2aZtX-kP... (flutter/flutter#183723) 2026-03-15 engine-flutter-autoroll@skia.org Roll Skia from 34ace196b838 to a6ccaf95c6e0 (2 revisions) (flutter/flutter#183712) 2026-03-14 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from vAWG8mRvsQHblDBsy... to WOfyEFkxf9JX26VS-... (flutter/flutter#183694) 2026-03-14 engine-flutter-autoroll@skia.org Roll Skia from 06106120c6bf to 34ace196b838 (1 revision) (flutter/flutter#183677) 2026-03-14 engine-flutter-autoroll@skia.org Roll Dart SDK from 6a3dc9d4f881 to b74e5b537d71 (2 revisions) (flutter/flutter#183676) 2026-03-14 jacksongardner@google.com Add some quality of life improvements to the release GitHub workflows. (flutter/flutter#183658) 2026-03-14 ishaquehassan@gmail.com Fix RouteAware.didPushNext documentation inaccuracy (flutter/flutter#183097) 2026-03-13 30870216+gaaclarke@users.noreply.github.com Adds complex layout impeller startup benchmark (flutter/flutter#183655) 2026-03-13 30870216+gaaclarke@users.noreply.github.com Adds switch for sdf rendering plus golden tests (flutter/flutter#183543) 2026-03-13 30870216+gaaclarke@users.noreply.github.com Made complex_layout_scroll_perf explicitly skia (flutter/flutter#183663) 2026-03-13 47866232+chunhtai@users.noreply.github.com Update android integration test to match the current android semantics (flutter/flutter#183548) 2026-03-13 engine-flutter-autoroll@skia.org Roll Skia from 6c0346103c24 to 06106120c6bf (3 revisions) (flutter/flutter#183654) 2026-03-13 engine-flutter-autoroll@skia.org Roll Dart SDK from d5f6d3c17499 to 6a3dc9d4f881 (1 revision) (flutter/flutter#183652) 2026-03-13 108678139+manu-sncf@users.noreply.github.com Fix PinnedHeaderSliver semantics focus capture (flutter/flutter#179023) 2026-03-13 jhy03261997@gmail.com [a11y][android] In Android 16, sendWindowContentChangeEvent when check state changes (flutter/flutter#183606) 2026-03-13 1063596+reidbaker@users.noreply.github.com Update gradle utils to know about kgp 2.3.10 constraints (flutter/flutter#183416) 2026-03-13 engine-flutter-autoroll@skia.org Roll Skia from 029229d8be91 to 6c0346103c24 (5 revisions) (flutter/flutter#183648) 2026-03-13 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from jJbpv4J_tjW-wuKDq... to vAWG8mRvsQHblDBsy... (flutter/flutter#183646) 2026-03-13 mengyanshou@gmail.com [flutter_tools] Support flavors and transformers for shaders (flutter/flutter#181889) ...

Laurie-Lin added 2 commits February 4, 2026 12:42

flutter_tools: allow transformers for flutter.shaders

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flutter_tools: add tests for shader transformers

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Support transformers for flutter.shaders entries in pubspec.yaml #181888

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flutter_tools: fix widget preview test for shaders

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flutter_tools: support flavor filtering for shaders in asset bundle

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Laurie-Lin changed the title ~~flutter_tools: support transformers for flutter.shaders~~ [flutter_tools] Support flavors and transformers for shaders Feb 11, 2026

[flutter_tools] Fix analyzer issues for shader flavor changes

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Merge branch 'master' into pr/shader-transformers

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Roll Flutter from 9e36adba5069 to cc7d8fb66d5a (22 revisions) flutter/packages#11243

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