Added special case for fat width arcs #161255

gaaclarke · 2025-01-07T19:24:56Z

This draws arcs as oval sectors when the stroke width is large enough.

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.

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

gaaclarke · 2025-01-07T19:29:28Z

I discovered some other cases where the arc code is making weird choices. I'll file an issue for those separately since they aren't exactly what the OP is asking for and I'm not sure if the framework will run into them ( see #158567 (comment) )

jonahwilliams · 2025-01-07T19:35:29Z

engine/src/flutter/impeller/display_list/dl_dispatcher.cc

-  builder.AddArc(oval_bounds, Degrees(start_degrees), Degrees(sweep_degrees),
-                 use_center);
-  GetCanvas().DrawPath(builder.TakePath(), paint_);
+  if (paint_.stroke_width >


Maybe add a breadcrumb back to the original issue here, or a comment explaining why we're doing this conversion.

jonahwilliams

LGTM

auto-submit · 2025-01-07T20:56:04Z

auto label is removed for flutter/flutter/161255, due to - The status or check suite Merge Queue Guard has failed. Please fix the issues identified (or deflake) before re-applying this label.

flutter-dashboard · 2025-01-09T01:21:17Z

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Changes reported for pull request #161255 at sha b26bb7b

flutter-dashboard · 2025-01-09T19:24:31Z

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Changes reported for pull request #161255 at sha 8c3c01a

jonahwilliams · 2025-01-13T21:05:23Z

@gaaclarke please make sure this lands

gaaclarke · 2025-01-13T21:08:11Z

@gaaclarke please make sure this lands

It's on autosubmit, it's been blocked for 4 days because of the tree-status. I'm still seeing people landing stuff (but the tree is red), is my CI check stuck?

jonahwilliams · 2025-01-13T21:09:02Z

Google testing appears to be stuck

gaaclarke · 2025-01-13T21:15:07Z

Google testing appears to be stuck

I've hit the "Test all" in the FROB UI. Let's see if that pokes it. The way the UI is setup it looks like Google testing is waiting on tree-status, but that can't be true as evidenced by the fact it's been frozen 4 days and things have landed in that time.

jonahwilliams · 2025-01-13T21:16:16Z

I would mark it as passing with an infra issue, I don't expect google testing to provide value for this PR.

gaaclarke · 2025-01-13T21:18:44Z

I would mark it as passing with an infra issue, I don't expect google testing to provide value for this PR.

done

gaaclarke · 2025-01-14T16:50:07Z

Checking up on this, the tree is red now, the autosubmit didn't seem to work since some PR's have landed. I guess I'll have to manually submit this to the merge queue when the tree is open.

Roll Flutter from 72db8f6 to 40c2b86 (33 revisions) flutter/flutter@72db8f6...40c2b86 2025-01-14 christopherfujino@gmail.com update changelog for 3.27.2 release (flutter/flutter#161569) 2025-01-14 tessertaha@gmail.com Fix `showLicensePage` does not inherit ambient `Theme` (flutter/flutter#161599) 2025-01-14 30870216+gaaclarke@users.noreply.github.com Added special case for fat width arcs (flutter/flutter#161255) 2025-01-14 matanlurey@users.noreply.github.com Replace `fetch `with `gclient sync`. (flutter/flutter#161565) 2025-01-14 engine-flutter-autoroll@skia.org Roll Packages from 3c3bc68 to d1fd623 (4 revisions) (flutter/flutter#161597) 2025-01-14 robert.ancell@canonical.com Remove unused method (flutter/flutter#161572) 2025-01-14 hbatagelo@gmail.com Fix crash when closing a window with `Alt+F4` in multi-win Flutter on Windows (flutter/flutter#161375) 2025-01-14 bruno.leroux@gmail.com Update InputDecoration.border documentation (flutter/flutter#161415) 2025-01-14 dkwingsmt@users.noreply.github.com [Web] Allow specifying the strategy on when to use <img> element to display images (flutter/flutter#159917) 2025-01-14 a-siva@users.noreply.github.com Roll Dart to Version 3.7.0-323.0.dev (flutter/flutter#161567) 2025-01-14 goderbauer@google.com Use wildcards (flutter/flutter#161548) 2025-01-14 jmccandless@google.com Autocomplete Options Width (flutter/flutter#143249) 2025-01-13 jason-simmons@users.noreply.github.com Move the analyzer_benchmark to Mac arm64 devicelab bots (flutter/flutter#161405) 2025-01-13 matanlurey@users.noreply.github.com Remove references to `cirrus`, mostly in doc comments. (flutter/flutter#161529) 2025-01-13 flar@google.com Fix paths when running clang-tidy on git diffs (flutter/flutter#161496) 2025-01-13 yjbanov@google.com [web:a11y] treat empty tappables as buttons (flutter/flutter#161360) 2025-01-13 58190796+MitchellGoodwin@users.noreply.github.com Add route settings to CupertinoSheetRoute (flutter/flutter#161528) 2025-01-13 matanlurey@users.noreply.github.com Copy `linux_host_engine` as `linux_host_engine_test`, removing `archives: [...]`. (flutter/flutter#161532) 2025-01-13 matanlurey@users.noreply.github.com Remove last two references to Cirrus CI. (flutter/flutter#161530) 2025-01-13 codefu@google.com Mark `Mac_mokey microbenchmarks` as flakey (flutter/flutter#161550) 2025-01-13 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Match CupertinoPageTransitionsBuilder animation duration to CupertinoPageRoute (#160241)" (flutter/flutter#161555) 2025-01-13 bkonyi@google.com Add validator execution times to `flutter doctor --verbose` (flutter/flutter#158124) 2025-01-13 matanlurey@users.noreply.github.com Explain more specifically how to use `flutter drive`/what it does (flutter/flutter#161450) 2025-01-13 dhankechakishan@gmail.com Fixed repeated strings for incompatible Gradle or AGP version in `create` command (flutter/flutter#161223) 2025-01-13 matanlurey@users.noreply.github.com Remove `WEB_SHARD_COUNT`, which no longer exists post-Cirrus. (flutter/flutter#161527) 2025-01-13 chinmaygarde@google.com [Impeller] Update guidance on prebuilt artifacts. (flutter/flutter#161251) 2025-01-13 flar@google.com Migrate DisplayList unit tests to DL/Impeller geometry classes (flutter/flutter#161453) 2025-01-13 jmccandless@google.com Context menu button callback docs clarification (flutter/flutter#161451) 2025-01-13 43089218+chika3742@users.noreply.github.com Match CupertinoPageTransitionsBuilder animation duration to CupertinoPageRoute (flutter/flutter#160241) 2025-01-13 codefu@google.com Udpate documentation on the third_party directories (flutter/flutter#161407) 2025-01-13 matanlurey@users.noreply.github.com Propagate environment variables when `flutter drive` is invoked. (flutter/flutter#161452) 2025-01-13 34871572+gmackall@users.noreply.github.com Convert base application name handling to kotlin source (start of FGP kt conversion) (flutter/flutter#155963) 2025-01-13 jonahwilliams@google.com [Impeller] remove API 30 restriction for SurfaceControl testing. (flutter/flutter#161438) 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 stuartmorgan@google.com 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: ...

fixes flutter#158567 This draws arcs as oval sectors when the stroke width is large enough. ## 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].  [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

Roll Flutter from 72db8f6 to 40c2b86 (33 revisions) flutter/flutter@72db8f6...40c2b86 2025-01-14 christopherfujino@gmail.com update changelog for 3.27.2 release (flutter/flutter#161569) 2025-01-14 tessertaha@gmail.com Fix `showLicensePage` does not inherit ambient `Theme` (flutter/flutter#161599) 2025-01-14 30870216+gaaclarke@users.noreply.github.com Added special case for fat width arcs (flutter/flutter#161255) 2025-01-14 matanlurey@users.noreply.github.com Replace `fetch `with `gclient sync`. (flutter/flutter#161565) 2025-01-14 engine-flutter-autoroll@skia.org Roll Packages from 3c3bc68 to d1fd623 (4 revisions) (flutter/flutter#161597) 2025-01-14 robert.ancell@canonical.com Remove unused method (flutter/flutter#161572) 2025-01-14 hbatagelo@gmail.com Fix crash when closing a window with `Alt+F4` in multi-win Flutter on Windows (flutter/flutter#161375) 2025-01-14 bruno.leroux@gmail.com Update InputDecoration.border documentation (flutter/flutter#161415) 2025-01-14 dkwingsmt@users.noreply.github.com [Web] Allow specifying the strategy on when to use <img> element to display images (flutter/flutter#159917) 2025-01-14 a-siva@users.noreply.github.com Roll Dart to Version 3.7.0-323.0.dev (flutter/flutter#161567) 2025-01-14 goderbauer@google.com Use wildcards (flutter/flutter#161548) 2025-01-14 jmccandless@google.com Autocomplete Options Width (flutter/flutter#143249) 2025-01-13 jason-simmons@users.noreply.github.com Move the analyzer_benchmark to Mac arm64 devicelab bots (flutter/flutter#161405) 2025-01-13 matanlurey@users.noreply.github.com Remove references to `cirrus`, mostly in doc comments. (flutter/flutter#161529) 2025-01-13 flar@google.com Fix paths when running clang-tidy on git diffs (flutter/flutter#161496) 2025-01-13 yjbanov@google.com [web:a11y] treat empty tappables as buttons (flutter/flutter#161360) 2025-01-13 58190796+MitchellGoodwin@users.noreply.github.com Add route settings to CupertinoSheetRoute (flutter/flutter#161528) 2025-01-13 matanlurey@users.noreply.github.com Copy `linux_host_engine` as `linux_host_engine_test`, removing `archives: [...]`. (flutter/flutter#161532) 2025-01-13 matanlurey@users.noreply.github.com Remove last two references to Cirrus CI. (flutter/flutter#161530) 2025-01-13 codefu@google.com Mark `Mac_mokey microbenchmarks` as flakey (flutter/flutter#161550) 2025-01-13 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Match CupertinoPageTransitionsBuilder animation duration to CupertinoPageRoute (#160241)" (flutter/flutter#161555) 2025-01-13 bkonyi@google.com Add validator execution times to `flutter doctor --verbose` (flutter/flutter#158124) 2025-01-13 matanlurey@users.noreply.github.com Explain more specifically how to use `flutter drive`/what it does (flutter/flutter#161450) 2025-01-13 dhankechakishan@gmail.com Fixed repeated strings for incompatible Gradle or AGP version in `create` command (flutter/flutter#161223) 2025-01-13 matanlurey@users.noreply.github.com Remove `WEB_SHARD_COUNT`, which no longer exists post-Cirrus. (flutter/flutter#161527) 2025-01-13 chinmaygarde@google.com [Impeller] Update guidance on prebuilt artifacts. (flutter/flutter#161251) 2025-01-13 flar@google.com Migrate DisplayList unit tests to DL/Impeller geometry classes (flutter/flutter#161453) 2025-01-13 jmccandless@google.com Context menu button callback docs clarification (flutter/flutter#161451) 2025-01-13 43089218+chika3742@users.noreply.github.com Match CupertinoPageTransitionsBuilder animation duration to CupertinoPageRoute (flutter/flutter#160241) 2025-01-13 codefu@google.com Udpate documentation on the third_party directories (flutter/flutter#161407) 2025-01-13 matanlurey@users.noreply.github.com Propagate environment variables when `flutter drive` is invoked. (flutter/flutter#161452) 2025-01-13 34871572+gmackall@users.noreply.github.com Convert base application name handling to kotlin source (start of FGP kt conversion) (flutter/flutter#155963) 2025-01-13 jonahwilliams@google.com [Impeller] remove API 30 restriction for SurfaceControl testing. (flutter/flutter#161438) 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 stuartmorgan@google.com 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: ...

github-actions bot added engine flutter/engine related. See also e: labels. e: impeller Impeller rendering backend issues and features requests labels Jan 7, 2025

gaaclarke marked this pull request as ready for review January 7, 2025 19:28

gaaclarke requested review from jason-simmons and jonahwilliams January 7, 2025 19:28

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gaaclarke added 3 commits January 7, 2025 13:03

Added special case for fat width arcs

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gaaclarke mentioned this pull request Jan 7, 2025

[impeller] drawing fat arcs has artifacts sometimes #161266

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Merged via the queue into flutter:master with commit e683e10 Jan 14, 2025
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Roll Flutter from 72db8f69e339 to 40c2b86fdf65 (33 revisions) flutter/packages#8428

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e683e10 Added special case for fat width arcs (flutter/flutter#161255)

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e683e10 Added special case for fat width arcs (flutter/flutter#161255)

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e683e10 Added special case for fat width arcs (flutter/flutter#161255)

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e683e10 Added special case for fat width arcs (flutter/flutter#161255)

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e683e10 Added special case for fat width arcs (flutter/flutter#161255)

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e683e10 Added special case for fat width arcs (flutter/flutter#161255)

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Added special case for fat width arcs #161255

Added special case for fat width arcs #161255

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