Adds impeller backend to skia gold client#181503
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gaaclarke merged 7 commits intoflutter:masterfrom Jan 28, 2026
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The pull request successfully integrates the Impeller backend as a dimension for Skia Gold testing. The changes correctly introduce a new getter to determine the Impeller backend based on platform or command-line arguments and update the ImageComparer to include this new dimension. The logic for identifying the backend and integrating it into the Skia Gold client is sound.
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| String? get impellerBackend { | ||
| if (!impellerEnabled) { | ||
| return null; | ||
| } | ||
| for (final String arg in Platform.executableArguments) { | ||
| if (arg.startsWith('--impeller-backend=')) { | ||
| return arg.substring('--impeller-backend='.length); | ||
| } | ||
| } | ||
| if (Platform.isMacOS || Platform.isIOS) { | ||
| return 'metal'; | ||
| } | ||
| return 'vulkan'; | ||
| } |
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The newly added impellerBackend getter is a public member but lacks documentation. Please add a doc comment explaining its purpose, how it determines the Impeller backend, and what values it can return. This improves code maintainability and helps other developers understand its usage.
For example:
/// Determines the Impeller backend currently in use.
///
/// This getter first checks if Impeller is enabled. If not, it returns `null`.
/// If Impeller is enabled, it attempts to find a `--impeller-backend=` argument
/// in the platform's executable arguments. If found, it extracts and returns
/// the specified backend (e.g., 'metal', 'vulkan').
///
/// If no `--impeller-backend=` argument is present, it defaults to 'metal'
/// for macOS and iOS platforms, and 'vulkan' for other platforms.
String? get impellerBackend {
// ... existing code ...
}References
- All public members should have documentation. (link)
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Hmm, I would have expected some sort of gold change when we changed the dimensions. |
jason-simmons
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autosubmit label was removed for flutter/flutter/181503, because - The status or check suite Google testing has failed. Please fix the issues identified (or deflake) before re-applying this label. |
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Roll Flutter from dfd92b773219 to da72d5936d69 (39 revisions) flutter/flutter@dfd92b7...da72d59 2026-01-29 98614782+auto-submit[bot]@users.noreply.github.com Reverts "[ Tool / Engine ] Cleanup x86 references (#181152)" (flutter/flutter#181643) 2026-01-29 [email protected] Roll Skia from 174db42b7300 to 89df65f8324c (2 revisions) (flutter/flutter#181636) 2026-01-29 [email protected] [material/menu_anchor.dart] Add animations to MenuAnchor. (flutter/flutter#176494) 2026-01-28 [email protected] Roll Skia from 8e09f8a82251 to 174db42b7300 (6 revisions) (flutter/flutter#181627) 2026-01-28 [email protected] Send statusBarTouch events via dedicated messages (flutter/flutter#179643) 2026-01-28 [email protected] test: Improve DropdownMenuFormField tests (flutter/flutter#181369) 2026-01-28 [email protected] Account for vec3 padding in Metal (flutter/flutter#181563) 2026-01-28 [email protected] [ Tool / Engine ] Cleanup x86 references (flutter/flutter#181152) 2026-01-28 [email protected] Fix the issue on macOS where, after a hot restart with multiple windows, unresponsive windows are left behind. (flutter/flutter#180287) 2026-01-28 [email protected] Roll Skia from 675444e94bc9 to 8e09f8a82251 (7 revisions) (flutter/flutter#181606) 2026-01-28 [email protected] Roll Packages from e37af11 to 1cb2148 (5 revisions) (flutter/flutter#181608) 2026-01-28 [email protected] fix: swap app and engine version in vk::ApplicationInfo (flutter/flutter#181432) 2026-01-28 [email protected] Adds impeller backend to skia gold client (flutter/flutter#181503) 2026-01-28 [email protected] Remove chrome_and_driver dependency where it's not needed (flutter/flutter#178174) 2026-01-28 [email protected] chore: Windows_mokey basic_material_app_win__compile !bringup (flutter/flutter#180985) 2026-01-28 [email protected] Fix generating both `settings.gradle` and `settings.gradle.kts` for plugins (flutter/flutter#181592) 2026-01-28 [email protected] Roll Skia from 6614f89de521 to 675444e94bc9 (3 revisions) (flutter/flutter#181587) 2026-01-28 [email protected] Fix `todayBorder` todayBorder color is incorrectly overridden by `todayForegroundColor` in CalendarDatePicker (flutter/flutter#178792) 2026-01-28 [email protected] Roll Skia from 8f1695a4b328 to 6614f89de521 (2 revisions) (flutter/flutter#181583) 2026-01-28 [email protected] feat: add RoundedSuperellipseInputBorder (flutter/flutter#177220) 2026-01-28 [email protected] Roll Dart SDK from 38e351498549 to f10dcbfca98f (2 revisions) (flutter/flutter#181582) 2026-01-28 [email protected] Roll Skia from f424d58e37a3 to 8f1695a4b328 (6 revisions) (flutter/flutter#181577) 2026-01-28 [email protected] Remove unused code paths in `PlatformViewsController.java` (flutter/flutter#181393) 2026-01-28 [email protected] feat: add onEnd to AnimatedCrossFade (flutter/flutter#181455) 2026-01-28 [email protected] Don't pass bounds to saveLayer call when painting ImageFilter (flutter/flutter#181353) 2026-01-28 [email protected] test: Clarify failure messages on gestures/debug_test.dart (flutter/flutter#181109) 2026-01-27 [email protected] Roll Fuchsia Linux SDK from akraNGn2lw4T1msgZ... to adhoq9ouVRh0xzkm3... (flutter/flutter#181571) 2026-01-27 [email protected] Roll Dart SDK from 4c7cb0a1d07d to 38e351498549 (4 revisions) (flutter/flutter#181570) 2026-01-27 [email protected] Make sure that an AnimatedPadding doesn't crash in 0x0 environment (flutter/flutter#181235) 2026-01-27 [email protected] Make sure that an ImageFiltered doesn't crash at 0x0 environment (flutter/flutter#181067) 2026-01-27 [email protected] Marks firebase_release_smoke_test to be unflaky (flutter/flutter#181308) 2026-01-27 [email protected] Fix remove material import box decoration test (flutter/flutter#181253) 2026-01-27 [email protected] Roll Skia from c2754838b077 to f424d58e37a3 (8 revisions) (flutter/flutter#181564) 2026-01-27 [email protected] Make sure that an AnimatedAlign doesn't crash in 0x0 environment (flutter/flutter#181361) 2026-01-27 [email protected] Make sure that an ImageIcon doesn't crash in 0x0 environment (flutter/flutter#181099) 2026-01-27 [email protected] Make sure that an AnimatedContainer doesn't crash in 0x0 environment (flutter/flutter#181198) 2026-01-27 [email protected] Make sure that an AnimatedRotation doesn't crash in 0x0 environment (flutter/flutter#181486) 2026-01-27 [email protected] Make sure that an AnimatedPositionedDirectional doesn't crash in 0x0 … (flutter/flutter#181451) 2026-01-27 [email protected] Merge changelog for 3.38.8. (flutter/flutter#181558) 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. ...
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flutter@1418863 made dart tests run against metal as well as vulkan. At the time there was no reported error. I suspect the vulkan and metal results are clobbering each other though since the backend was not part of the dimensions. test exempt: is test ## 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. 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
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1418863 made dart tests run against metal as well as vulkan. At the time there was no reported error. I suspect the vulkan and metal results are clobbering each other though since the backend was not part of the dimensions.
test exempt: is test
Pre-launch Checklist
///).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. Comments from the
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