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[impeller] fixes diagonal antialiased lines #166298

Merged
merged 3 commits into from
Apr 1, 2025
Merged

[impeller] fixes diagonal antialiased lines #166298

merged 3 commits into from
Apr 1, 2025
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gaaclarke
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@gaaclarke gaaclarke commented Mar 31, 2025 •
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fixes #166276

This fixes antialiased diagonal lines being a different width by doing all prefiltered math in unrotated space, then applying a rotation to the line. This avoids the oddity in the gpu gems 2 math.

after photo

IMG_7582

without antialias

IMG_7581

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

@github-actions github-actions bot added engine flutter/engine repository. See also e: labels. e: impeller Impeller rendering backend issues and features requests labels Mar 31, 2025
@gaaclarke gaaclarke requested a review from jonahwilliams March 31, 2025 22:49
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jonahwilliams approved these changes Mar 31, 2025
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LGTM

@jonahwilliams
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Potential issue: If we want to use this outside of a single drawLine (i,.e. a Path) we'd need to fix the calculations to work correctly regardless of rotation.

@gaaclarke
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Potential issue: If we want to use this outside of a single drawLine (i,.e. a Path) we'd need to fix the calculations to work correctly regardless of rotation.

Yea, I was worried about that too. We'll see when we get around to it, how we'll do the path stuff is still mostly TBD.

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gaaclarke commented Mar 31, 2025 •
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In the future I think we can instead of rotating the geometry that gets rendered, rotate the geometry that is used to calculated the distance to the line by having a different vector attached to the vertices.

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Or instead of sending up another set of vectors attached to the vertices we could just send a matrix as a uniform to convert from the position that is drawing to the unrotated space.

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Golden file changes have been found for this pull request. Click here to view and triage (e.g. because this is an intentional change).

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Changes reported for pull request #166298 at sha eed3638

@flutter-dashboard flutter-dashboard bot added the will affect goldens Changes to golden files label Apr 1, 2025
@gaaclarke gaaclarke added the autosubmit Merge PR when tree becomes green via auto submit App label Apr 1, 2025
@gaaclarke gaaclarke added this pull request to the merge queue Apr 1, 2025
Merged via the queue into flutter:master with commit 576cdb4 Apr 1, 2025
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@gaaclarke gaaclarke deleted the no-skinny-aa branch April 1, 2025 01:18
@flutter-dashboard flutter-dashboard bot removed the autosubmit Merge PR when tree becomes green via auto submit App label Apr 1, 2025
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576cdb40f [impeller] fixes diagonal antialiased lines (flutter/flutte…
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…r#166298)
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576cdb40f [impeller] fixes diagonal antialiased lines (flutter/flutte…
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…r#166298)
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576cdb40f [impeller] fixes diagonal antialiased lines (flutter/flutte…
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576cdb40f [impeller] fixes diagonal antialiased lines (flutter/flutte…
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…r#166298)
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576cdb40f [impeller] fixes diagonal antialiased lines (flutter/flutte…
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…r#166298)
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576cdb40f [impeller] fixes diagonal antialiased lines (flutter/flutte…
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…r#166298)
auto-submit bot pushed a commit to flutter/packages that referenced this pull request Apr 2, 2025
@engine-flutter-autoroll
Roll Flutter from 05b5e7910544 to a0b1b3253416 (37 revisions) (#8985)
8f5844a 
Roll Flutter from 05b5e7910544 to a0b1b3253416 (37 revisions)

flutter/flutter@05b5e79...a0b1b32

2025-04-01 [email protected] Roll Dart SDK from b4d374ec59ec to 4e1f02bc704f (2 revisions) (flutter/flutter#166342)
2025-04-01 [email protected] Trim any text before osascript JSON response (flutter/flutter#166296)
2025-04-01 [email protected] [Gen-l10n] Add `Message.resourceId` and `locale` to all `L10nException` error messages (flutter/flutter#163654)
2025-04-01 [email protected] Add `--ignore-timeouts` flag for `flutter test` command (flutter/flutter#164437)
2025-04-01 [email protected] Update TESTOWNERS username (flutter/flutter#166191)
2025-04-01 [email protected] Roll Skia from 4b07443e6071 to 52cbb917fffd (4 revisions) (flutter/flutter#166329)
2025-04-01 [email protected] Roll Dart SDK from 6b07a09cbd2d to b4d374ec59ec (2 revisions) (flutter/flutter#166321)
2025-04-01 [email protected] [tool] Improve using project files in build targets (flutter/flutter#166211)
2025-04-01 [email protected] Rename FlRenderer to FlCompositorOpenGL (flutter/flutter#166037)
2025-04-01 [email protected] [engine, web_ui] Fix instances of library_private_types_in_public_api (flutter/flutter#166156)
2025-04-01 [email protected] Roll Dart SDK from 509faa921c95 to 6b07a09cbd2d (1 revision) (flutter/flutter#166301)
2025-04-01 [email protected] [Impeller] small cpu perf for text contents. (flutter/flutter#166199)
2025-04-01 [email protected] [android_engine_test] disable old HC mode tests. (flutter/flutter#166293)
2025-04-01 [email protected] [impeller] fixes diagonal antialiased lines (flutter/flutter#166298)
2025-04-01 [email protected] Roll Skia from 5f262bd2cbb4 to 4b07443e6071 (10 revisions) (flutter/flutter#166299)
2025-03-31 [email protected] [Impeller] Directly tessellate conics to linear path segments (flutter/flutter#166165)
2025-03-31 [email protected] [tool] Don't write the .flutter-plugins-dependencies file if it is unchanged (flutter/flutter#166164)
2025-03-31 [email protected] Move `.cxx` directory out of `android/app` (flutter/flutter#166277)
2025-03-31 [email protected] Fix typo in carousel.dart (flutter/flutter#164727)
2025-03-31 [email protected] Roll Dart SDK from c5fa06710bb6 to 509faa921c95 (1 revision) (flutter/flutter#166283)
2025-03-31 [email protected] Public nodes needing paint or layout (flutter/flutter#166148)
2025-03-31 [email protected] [Gen-l10n] Infer placeholder types on both templates and localizations (flutter/flutter#163690)
2025-03-31 [email protected] [Engine][iOS] Cancel animation when recieved `UIKeyboardWillHideNotification` with duration 0.0 (flutter/flutter#164884)
2025-03-31 [email protected] [fuchsia] Remove explicit LogSink and InspectSink routing and use dictionaries instead (flutter/flutter#162780)
2025-03-31 [email protected] Updated to latest AVD to Support Android 16 (API 36) (flutter/flutter#165926)
2025-03-31 [email protected] Feat: Add brightnessOf method for theme (flutter/flutter#163733)
2025-03-31 [email protected] Marks Linux_mokey new_gallery__crane_perf to be flaky (flutter/flutter#165964)
2025-03-31 [email protected] [ Tool ] Correctly select entrypoint target for web build from positional argument list (flutter/flutter#166260)
2025-03-31 [email protected] [Impeller] remove validation warning ignores. (flutter/flutter#166205)
2025-03-31 [email protected] [Impeller] handle shader ordering bug on macOS. (flutter/flutter#165937)
2025-03-31 [email protected] Fix CODEOWNERS for the iOS review team (flutter/flutter#166178)
2025-03-31 [email protected] Remove `<meta content="IE=Edge" http-equiv="X-UA-Compatible">` (flutter/flutter#166252)
2025-03-31 [email protected] Roll Dart SDK from b9c35e05feb5 to c5fa06710bb6 (1 revision) (flutter/flutter#166251)
2025-03-31 [email protected] Roll Skia from 418c68ea5ccb to 5f262bd2cbb4 (2 revisions) (flutter/flutter#166244)
2025-03-31 [email protected] Roll Skia from b6a3bbd1d153 to 418c68ea5ccb (1 revision) (flutter/flutter#166236)
2025-03-31 [email protected] [Impeller] fix min filter for GL external textures. (flutter/flutter#166224)
2025-03-31 [email protected] Roll Skia from 10f4cf9a817d to b6a3bbd1d153 (13 revisions) (flutter/flutter#166231)

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

...
@gaaclarke gaaclarke mentioned this pull request Apr 2, 2025
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masterromuald pushed a commit to masterromuald/packages that referenced this pull request Apr 3, 2025
@engine-flutter-autoroll @masterromuald
Roll Flutter from 05b5e7910544 to a0b1b3253416 (37 revisions) (flutte…
894e301 
…r#8985)

Roll Flutter from 05b5e7910544 to a0b1b3253416 (37 revisions)

flutter/flutter@05b5e79...a0b1b32

2025-04-01 [email protected] Roll Dart SDK from b4d374ec59ec to 4e1f02bc704f (2 revisions) (flutter/flutter#166342)
2025-04-01 [email protected] Trim any text before osascript JSON response (flutter/flutter#166296)
2025-04-01 [email protected] [Gen-l10n] Add `Message.resourceId` and `locale` to all `L10nException` error messages (flutter/flutter#163654)
2025-04-01 [email protected] Add `--ignore-timeouts` flag for `flutter test` command (flutter/flutter#164437)
2025-04-01 [email protected] Update TESTOWNERS username (flutter/flutter#166191)
2025-04-01 [email protected] Roll Skia from 4b07443e6071 to 52cbb917fffd (4 revisions) (flutter/flutter#166329)
2025-04-01 [email protected] Roll Dart SDK from 6b07a09cbd2d to b4d374ec59ec (2 revisions) (flutter/flutter#166321)
2025-04-01 [email protected] [tool] Improve using project files in build targets (flutter/flutter#166211)
2025-04-01 [email protected] Rename FlRenderer to FlCompositorOpenGL (flutter/flutter#166037)
2025-04-01 [email protected] [engine, web_ui] Fix instances of library_private_types_in_public_api (flutter/flutter#166156)
2025-04-01 [email protected] Roll Dart SDK from 509faa921c95 to 6b07a09cbd2d (1 revision) (flutter/flutter#166301)
2025-04-01 [email protected] [Impeller] small cpu perf for text contents. (flutter/flutter#166199)
2025-04-01 [email protected] [android_engine_test] disable old HC mode tests. (flutter/flutter#166293)
2025-04-01 [email protected] [impeller] fixes diagonal antialiased lines (flutter/flutter#166298)
2025-04-01 [email protected] Roll Skia from 5f262bd2cbb4 to 4b07443e6071 (10 revisions) (flutter/flutter#166299)
2025-03-31 [email protected] [Impeller] Directly tessellate conics to linear path segments (flutter/flutter#166165)
2025-03-31 [email protected] [tool] Don't write the .flutter-plugins-dependencies file if it is unchanged (flutter/flutter#166164)
2025-03-31 [email protected] Move `.cxx` directory out of `android/app` (flutter/flutter#166277)
2025-03-31 [email protected] Fix typo in carousel.dart (flutter/flutter#164727)
2025-03-31 [email protected] Roll Dart SDK from c5fa06710bb6 to 509faa921c95 (1 revision) (flutter/flutter#166283)
2025-03-31 [email protected] Public nodes needing paint or layout (flutter/flutter#166148)
2025-03-31 [email protected] [Gen-l10n] Infer placeholder types on both templates and localizations (flutter/flutter#163690)
2025-03-31 [email protected] [Engine][iOS] Cancel animation when recieved `UIKeyboardWillHideNotification` with duration 0.0 (flutter/flutter#164884)
2025-03-31 [email protected] [fuchsia] Remove explicit LogSink and InspectSink routing and use dictionaries instead (flutter/flutter#162780)
2025-03-31 [email protected] Updated to latest AVD to Support Android 16 (API 36) (flutter/flutter#165926)
2025-03-31 [email protected] Feat: Add brightnessOf method for theme (flutter/flutter#163733)
2025-03-31 [email protected] Marks Linux_mokey new_gallery__crane_perf to be flaky (flutter/flutter#165964)
2025-03-31 [email protected] [ Tool ] Correctly select entrypoint target for web build from positional argument list (flutter/flutter#166260)
2025-03-31 [email protected] [Impeller] remove validation warning ignores. (flutter/flutter#166205)
2025-03-31 [email protected] [Impeller] handle shader ordering bug on macOS. (flutter/flutter#165937)
2025-03-31 [email protected] Fix CODEOWNERS for the iOS review team (flutter/flutter#166178)
2025-03-31 [email protected] Remove `<meta content="IE=Edge" http-equiv="X-UA-Compatible">` (flutter/flutter#166252)
2025-03-31 [email protected] Roll Dart SDK from b9c35e05feb5 to c5fa06710bb6 (1 revision) (flutter/flutter#166251)
2025-03-31 [email protected] Roll Skia from 418c68ea5ccb to 5f262bd2cbb4 (2 revisions) (flutter/flutter#166244)
2025-03-31 [email protected] Roll Skia from b6a3bbd1d153 to 418c68ea5ccb (1 revision) (flutter/flutter#166236)
2025-03-31 [email protected] [Impeller] fix min filter for GL external textures. (flutter/flutter#166224)
2025-03-31 [email protected] Roll Skia from 10f4cf9a817d to b6a3bbd1d153 (13 revisions) (flutter/flutter#166231)

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

...
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[impeller] antialias diagonal lines look lighter
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@gaaclarke @jonahwilliams