[Windows] Allow apps to prefer high power GPUs #177653
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This pull request adds a HighPerformancePreference flag for GPU selection on Windows. This allows applications to request a high-performance GPU. The changes are propagated through the necessary layers, including the public flutter_windows.h header, the dart_project.h wrapper, and the internal EGL manager. The logic for selecting a GPU by preference has been centralized into a new GetGpuLuidByPreference function in egl/manager.cc, which is now used for both low and high power preferences. A new unit test, GetGraphicsAdapterWithHighPerformancePreference, has been added to verify the selection of the high-performance GPU.
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This pull request executed golden file tests, but it has not been updated in a while (20+ days). Test results from Gold expire after as many days, so this pull request will need to be updated with a fresh commit in order to get results from Gold. For more guidance, visit Writing a golden file test for Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing. |
loic-sharma
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Nov 17, 2025
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This looks good to me. Thanks for the contribution!
mattkae
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This seems reasonable to me!
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@9AZX it looks like this change was forked off Canonical's fork of Flutter. Could you rebase this off Flutter's master branch? That might fix the Google testing check. |
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My bad ! I just rebased with Flutter master, it should be okay :) |
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autosubmit label was removed for flutter/flutter/177653, because The base commit of the PR is older than 7 days and can not be merged. Please merge the latest changes from the main into this branch and resubmit the PR. |
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Roll Flutter from 69d8710 to 5b87203 (42 revisions) flutter/flutter@69d8710...5b87203 2025-12-05 engine-flutter-autoroll@skia.org Roll Packages from d39e481 to b17d3ff (3 revisions) (flutter/flutter#179505) 2025-12-05 bungeman@chromium.org Move target_cpu into use_rbe block in Fuchsia build (flutter/flutter#179458) 2025-12-05 engine-flutter-autoroll@skia.org Roll Skia from fe6bf18a3f6b to a31411879251 (3 revisions) (flutter/flutter#179499) 2025-12-05 sokolovskyi.konstantin@gmail.com Force WASM single threading in Chrome extensions. (flutter/flutter#179400) 2025-12-05 engine-flutter-autoroll@skia.org Roll Skia from aea282ea0bcd to fe6bf18a3f6b (7 revisions) (flutter/flutter#179489) 2025-12-05 dolt@guide.inc fix: check both pointer count and action before reusing MotionEvent (flutter/flutter#178528) 2025-12-05 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from VtDPX2k1kosHxjKUE... to vDeTl_KBeLJY8nCAx... (flutter/flutter#179478) 2025-12-05 bkonyi@google.com [ Widget Preview ] Add embedded Widget Inspector support (flutter/flutter#178116) 2025-12-05 30870216+gaaclarke@users.noreply.github.com bubble up fragment shader errors (flutter/flutter#179363) 2025-12-05 engine-flutter-autoroll@skia.org Roll Dart SDK from eda82318e193 to 42fe3327abca (1 revision) (flutter/flutter#179472) 2025-12-05 jesswon@google.com [Android 16] Use AVD With New Android Renderer (flutter/flutter#179306) 2025-12-05 bkonyi@google.com Unpin `package:dwds` dependency (flutter/flutter#179462) 2025-12-05 flar@google.com [Impeller] include uniform info in impellerc json reflections (flutter/flutter#179317) 2025-12-05 engine-flutter-autoroll@skia.org Roll Skia from 1591b066f49b to aea282ea0bcd (1 revision) (flutter/flutter#179468) 2025-12-04 engine-flutter-autoroll@skia.org Roll Skia from e1923478562b to 1591b066f49b (3 revisions) (flutter/flutter#179460) 2025-12-04 jacksongardner@google.com Cherry-pick flutter 3.38.4 changelog back to master. (flutter/flutter#179463) 2025-12-04 1961493+harryterkelsen@users.noreply.github.com [web] Add clone method to LayerPicture and dispose pictures in PictureLayer (flutter/flutter#179162) 2025-12-04 30870216+gaaclarke@users.noreply.github.com Fixes merge conflict from high bitrate texture tests (flutter/flutter#179416) 2025-12-04 116356835+AbdeMohlbi@users.noreply.github.com Fix typos in `VirtualDisplayController.java` (flutter/flutter#179411) 2025-12-04 engine-flutter-autoroll@skia.org Roll Dart SDK from 2de44cc08970 to eda82318e193 (1 revision) (flutter/flutter#179453) 2025-12-04 engine-flutter-autoroll@skia.org Roll Skia from 55d94a54f453 to e1923478562b (1 revision) (flutter/flutter#179449) 2025-12-04 engine-flutter-autoroll@skia.org Roll Packages from 8cb4903 to d39e481 (8 revisions) (flutter/flutter#179451) 2025-12-04 bruno.leroux@gmail.com Add DropdownMenu.selectOnly (flutter/flutter#179189) 2025-12-04 engine-flutter-autoroll@skia.org Roll Dart SDK from 7e6bfc6af55c to 2de44cc08970 (6 revisions) (flutter/flutter#179443) 2025-12-04 engine-flutter-autoroll@skia.org Roll Skia from b8f79d7316c0 to 55d94a54f453 (1 revision) (flutter/flutter#179439) 2025-12-04 6655696+guidezpl@users.noreply.github.com Revise README for link updates and terminology changes (flutter/flutter#179357) 2025-12-04 engine-flutter-autoroll@skia.org Roll Skia from ce19122e3982 to b8f79d7316c0 (3 revisions) (flutter/flutter#179436) 2025-12-04 bruno.leroux@gmail.com Update some BottomNavigationBar comments to reflect theme normalization (flutter/flutter#179404) 2025-12-04 robert.ancell@canonical.com Replace use of eglCreateImage with eglCreateImageKHR to reduce EGL requirement (flutter/flutter#179310) 2025-12-04 engine-flutter-autoroll@skia.org Roll Skia from 81a9a0751f00 to ce19122e3982 (5 revisions) (flutter/flutter#179430) 2025-12-04 30870216+gaaclarke@users.noreply.github.com [impellerc] adds entry prefix flag to avoid shader collisions (flutter/flutter#179160) 2025-12-04 jon.i@hotmail.fr [Windows] Allow apps to prefer high power GPUs (flutter/flutter#177653) 2025-12-04 bkonyi@google.com [ Infra ] Shard `Windows tool_tests_commands` (flutter/flutter#179409) 2025-12-04 nshahan@google.com [flutter_tools] Fix filename typo (flutter/flutter#179427) 2025-12-04 fluttergithubbot@gmail.com Marks Linux_pixel_7pro draw_arcs_all_stroke_styles_perf__timeline_summary to be unflaky (flutter/flutter#179392) 2025-12-03 fluttergithubbot@gmail.com Marks Mac_ios draw_arcs_all_fill_styles_perf_ios__timeline_summary to be unflaky (flutter/flutter#179391) 2025-12-03 fluttergithubbot@gmail.com Marks Linux_pixel_7pro draw_arcs_all_fill_styles_perf__timeline_summary to be unflaky (flutter/flutter#179390) 2025-12-03 jason-simmons@users.noreply.github.com Roll Abseil to 564023aa5376 (flutter/flutter#179421) 2025-12-03 30870216+gaaclarke@users.noreply.github.com Made wide gamut tests give more information in their failure (flutter/flutter#179415) 2025-12-03 engine-flutter-autoroll@skia.org Roll Skia from c20f797ab6f9 to 81a9a0751f00 (5 revisions) (flutter/flutter#179417) 2025-12-03 737941+loic-sharma@users.noreply.github.com Migrate samples and docs to RadioGroup (flutter/flutter#179158) 2025-12-03 iinozemtsev@google.com Roll Dart SDK to 3.11.0-200.1.beta (flutter/flutter#179399) 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 ...
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Added a `HighPerformancePreference` flag alongside the existing `LowPowerPreference`, following the same principle. This is useful for games and other high-performance applications. You just need to add in the `main.cpp` of the app: `project.set_gpu_preference(flutter::GpuPreference::HighPerformancePreference);` ## 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 --------- Co-authored-by: Loïc Sharma <737941+loic-sharma@users.noreply.github.com>
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Added a
HighPerformancePreferenceflag alongside the existingLowPowerPreference, following the same principle.This is useful for games and other high-performance applications.
You just need to add in the
main.cppof the app:project.set_gpu_preference(flutter::GpuPreference::HighPerformancePreference);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
gemini-code-assistbot 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.