Roll Flutter from da72d5936d69 to 1d9d6a9a5ef6 (33 revisions)

flutter/flutter@da72d59...1d9d6a9

2026-01-30 [email protected] enable enhanced debugging for GLES playground (flutter/flutter#181157)
2026-01-30 [email protected] Make the Windows windowing_test in .ci.yaml have bringup as false (flutter/flutter#181664)
2026-01-30 [email protected] Roll Packages from cd4fd61 to 510dd40 (4 revisions) (flutter/flutter#181726)
2026-01-30 [email protected] Roll Skia from edbf7e9eb846 to 4745eb2fe837 (1 revision) (flutter/flutter#181725)
2026-01-30 [email protected] Enhance error handling of WidgetsBindingObserver callbacks (flutter/flutter#181174)
2026-01-30 [email protected] Roll Skia from 05d3cb9d2be9 to edbf7e9eb846 (2 revisions) (flutter/flutter#181715)
2026-01-30 [email protected] Roll Skia from c198e5fa9cd9 to 05d3cb9d2be9 (1 revision) (flutter/flutter#181712)
2026-01-30 [email protected] Roll Dart SDK from 920b7e24583e to 2703fd9733ce (2 revisions) (flutter/flutter#181693)
2026-01-30 [email protected] Roll Skia from b9f40c193e7a to c198e5fa9cd9 (6 revisions) (flutter/flutter#181692)
2026-01-30 [email protected] Roll pub packages (flutter/flutter#181690)
2026-01-30 [email protected] Extend the Windows tool_integration_tests_2_9 shard timeout to 1 hour (flutter/flutter#181678)
2026-01-29 [email protected] Add `android_sdk` dependency to `android_engine_opengles_tests` (flutter/flutter#181681)
2026-01-29 [email protected] Roll Dart SDK from a0685c8e946b to 920b7e24583e (3 revisions) (flutter/flutter#181680)
2026-01-29 [email protected] Roll Skia from 128b5213711e to b9f40c193e7a (14 revisions) (flutter/flutter#181675)
2026-01-29 [email protected] [Impeller] Ensure that HostBuffers/DeviceBuffers allocated by RendererTest tests are valid for the lifetime of the RenderPass (flutter/flutter#181635)
2026-01-29 [email protected] [Impeller] Fix off-by-one indices in the SimilarPointPair/SimilarPointTrio functions used by ShadowPathGeometryTest (flutter/flutter#181623)
2026-01-29 [email protected] 180162 fix radio list tile and switch list tile accept widget states controller (flutter/flutter#180367)
2026-01-29 [email protected] Remove unused test file (flutter/flutter#181671)
2026-01-29 [email protected] Roll libpng to version 1.6.54 (flutter/flutter#181625)
2026-01-29 [email protected] Remove nonstandard ndkpath for `hybrid_android_views` integration test (flutter/flutter#181666)
2026-01-29 [email protected] Add TestWidgetsApp utility and refactor widget tests to use WidgetsApp (flutter/flutter#180456)
2026-01-29 [email protected] Add `TestTextField` and migrate tests (flutter/flutter#180494)
2026-01-29 [email protected] Merge changelog for 3.38.9 (flutter/flutter#181668)
2026-01-29 [email protected] [flutter_tools] Deprecate `plugin_ffi` template (flutter/flutter#181588)
2026-01-29 [email protected] Deprecate onReorder callback (flutter/flutter#178242)
2026-01-29 [email protected] [web] Use defensive null check in text editing placeElement (flutter/flutter#180795)
2026-01-29 [email protected] Roll Packages from 1cb2148 to cd4fd61 (4 revisions) (flutter/flutter#181663)
2026-01-29 [email protected] Roll Skia from 89df65f8324c to 128b5213711e (2 revisions) (flutter/flutter#181651)
2026-01-29 [email protected] [hooks] Don't run build hooks for code assets in `flutter run` (flutter/flutter#181542)
2026-01-29 [email protected] Roll Dart SDK from f10dcbfca98f to a0685c8e946b (5 revisions) (flutter/flutter#181653)
2026-01-29 [email protected] Fixes getUniformX for Vulkan (flutter/flutter#181286)
2026-01-29 [email protected] Roll Fuchsia Linux SDK from adhoq9ouVRh0xzkm3... to isy1ARvK-3bsvtfc-... (flutter/flutter#181641)
2026-01-29 [email protected] Add isDark, isLight, and isSystem getters to ThemeMode (flutter/flutter#181475)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-packages
Please CC [email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
...

Does what it says on the tin!

This PR adds struct member information to the runtime flatbuffer format.
This allows dart code to introspect structs at runtime.

Also modifies the runtime_stage tests to verify formats for all
supported uniform types.

Bubbles up struct member information to dart, and uses that information
to grab struct members in `getUniformX` related functions. This is
necessary on Vulkan because all uniforms are packaged into a single
struct. Also re-enables tests

## 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.

Does what it says on the tin!

This PR adds struct member information to the runtime flatbuffer format.
This allows dart code to introspect structs at runtime.

Also modifies the runtime_stage tests to verify formats for all
supported uniform types.

Bubbles up struct member information to dart, and uses that information
to grab struct members in `getUniformX` related functions. This is
necessary on Vulkan because all uniforms are packaged into a single
struct. Also re-enables tests

## 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.

Does what it says on the tin!

This PR adds struct member information to the runtime flatbuffer format.
This allows dart code to introspect structs at runtime.

Also modifies the runtime_stage tests to verify formats for all
supported uniform types.

Bubbles up struct member information to dart, and uses that information
to grab struct members in `getUniformX` related functions. This is
necessary on Vulkan because all uniforms are packaged into a single
struct. Also re-enables tests

- [ ] 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.

Reland `Enabled some disabled impeller fragment shader dart tests` (flutter#180788)

relands flutter#180759

changes since revert:
1) waits for async tests now
1) keeps 2 tests that don't pass on impeller disabled

- [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.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

**Note**: The Flutter team is currently trialing the use of [Gemini Code
Assist for
GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code).
Comments from the `gemini-code-assist` bot should not be taken as
authoritative feedback from the Flutter team. If you find its comments
useful you can update your code accordingly, but if you are unsure or
disagree with the feedback, please feel free to wait for a Flutter team
member's review for guidance on which automated comments should be
addressed.

<!-- Links -->
[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

Enables fragment shader test for impeller (fixes mat2 on vulkan) (flutter#181013)

This rearranges the packing of mat2 fields in structs which was causing
an existing fragment shader test to fail.

The test still doesn't work on Metal, but this PR fixes it for Vulkan. I
suspect the fix for metal may be similar but since the uniforms aren't
in a virtual struct the code isn't hitting this fix.

issue: flutter#180873

- [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.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

**Note**: The Flutter team is currently trialing the use of [Gemini Code
Assist for
GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code).
Comments from the `gemini-code-assist` bot should not be taken as
authoritative feedback from the Flutter team. If you find its comments
useful you can update your code accordingly, but if you are unsure or
disagree with the feedback, please feel free to wait for a Flutter team
member's review for guidance on which automated comments should be
addressed.

<!-- Links -->
[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

Account for vec3 padding in Metal (flutter#181563)

Re-landing of flutter#181340
incorporating flutter#181550.

Vec3 uniforms on the metal backend are vec4-aligned. This PR accounts
for that padding.

---------

Co-authored-by: gaaclarke <[email protected]>

Fixes getUniformX for Vulkan (flutter#181286)

Does what it says on the tin!

This PR adds struct member information to the runtime flatbuffer format.
This allows dart code to introspect structs at runtime.

Also modifies the runtime_stage tests to verify formats for all
supported uniform types.

Bubbles up struct member information to dart, and uses that information
to grab struct members in `getUniformX` related functions. This is
necessary on Vulkan because all uniforms are packaged into a single
struct. Also re-enables tests

- [ ] 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.

Organize and update fragment shader uniform tests. (flutter#181822)

Adds more comprehensive testing for setFloat and getUniform* on fragment
shaders.

Deletes redundant tests.

Fixes getUniformVecX indexing errors.

Update web ui fragment shader tests (flutter#181877)

Adds a bunch of tests for uniform setting functionality for custom
fragment shaders on the web.

Deletes redundant tests.

Fixes a discovered issue in the uniform offset calculation. We were
previously using the `location`, which is the integer offset of the
uniform, not the offset in floats.

Reland `Enabled some disabled impeller fragment shader dart tests` (flutter#180788)

relands flutter#180759

changes since revert:
1) waits for async tests now
1) keeps 2 tests that don't pass on impeller disabled

- [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.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

**Note**: The Flutter team is currently trialing the use of [Gemini Code
Assist for
GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code).
Comments from the `gemini-code-assist` bot should not be taken as
authoritative feedback from the Flutter team. If you find its comments
useful you can update your code accordingly, but if you are unsure or
disagree with the feedback, please feel free to wait for a Flutter team
member's review for guidance on which automated comments should be
addressed.

<!-- Links -->
[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

Enables fragment shader test for impeller (fixes mat2 on vulkan) (flutter#181013)

This rearranges the packing of mat2 fields in structs which was causing
an existing fragment shader test to fail.

The test still doesn't work on Metal, but this PR fixes it for Vulkan. I
suspect the fix for metal may be similar but since the uniforms aren't
in a virtual struct the code isn't hitting this fix.

issue: flutter#180873

- [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.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

**Note**: The Flutter team is currently trialing the use of [Gemini Code
Assist for
GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code).
Comments from the `gemini-code-assist` bot should not be taken as
authoritative feedback from the Flutter team. If you find its comments
useful you can update your code accordingly, but if you are unsure or
disagree with the feedback, please feel free to wait for a Flutter team
member's review for guidance on which automated comments should be
addressed.

<!-- Links -->
[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

Account for vec3 padding in Metal (flutter#181563)

Re-landing of flutter#181340
incorporating flutter#181550.

Vec3 uniforms on the metal backend are vec4-aligned. This PR accounts
for that padding.

---------

Co-authored-by: gaaclarke <[email protected]>

Fixes getUniformX for Vulkan (flutter#181286)

Does what it says on the tin!

This PR adds struct member information to the runtime flatbuffer format.
This allows dart code to introspect structs at runtime.

Also modifies the runtime_stage tests to verify formats for all
supported uniform types.

Bubbles up struct member information to dart, and uses that information
to grab struct members in `getUniformX` related functions. This is
necessary on Vulkan because all uniforms are packaged into a single
struct. Also re-enables tests

- [ ] 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.

Organize and update fragment shader uniform tests. (flutter#181822)

Adds more comprehensive testing for setFloat and getUniform* on fragment
shaders.

Deletes redundant tests.

Fixes getUniformVecX indexing errors.

Update web ui fragment shader tests (flutter#181877)

Adds a bunch of tests for uniform setting functionality for custom
fragment shaders on the web.

Deletes redundant tests.

Fixes a discovered issue in the uniform offset calculation. We were
previously using the `location`, which is the integer offset of the
uniform, not the offset in floats.

Does what it says on the tin!

This PR adds struct member information to the runtime flatbuffer format.
This allows dart code to introspect structs at runtime.

Also modifies the runtime_stage tests to verify formats for all
supported uniform types.

Bubbles up struct member information to dart, and uses that information
to grab struct members in `getUniformX` related functions. This is
necessary on Vulkan because all uniforms are packaged into a single
struct. Also re-enables tests

## 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.