mirror of https://github.com/flutter/flutter.git synced 2026-02-05 03:09:43 +08:00

History

This patch adds a default shader warm up process which moves shader compilation from the animation time to the startup time. This also provides an extension for `runApp` so developers can customize the warm up process.

This should reduce our worst_frame_rasterizer_time_millis from ~100ms to ~20-30ms for both flutter_gallery and complex_layout benchmarks. Besides, this should also have a significant improvement on 90th and 99th percentile time (50%-100% speedup in some cases, but I haven't tested them thoroughly; I'll let our device lab collect the data afterwards).

The tradeoff the is the startup time (time to first frame). Our `flutter run --profile --trace-startup` seems to be a little noisy and I see about 100ms-200ms increase in that measurement for complex_layout and flutter_gallery. Note that this only happens on the first run after install or data wipe. Later the Skia persistent cache will remove the overhead.

This also adds a cubic_bezier benchmark to test the custom shader warm up process.

This should fix https://github.com/flutter/flutter/issues/813 (either by `defaultShaderWarmUp`, or a `customShaderWarmUp`).

2019-02-22 15:37:02 -08:00

catalog

Reland #27754 , now that bsdiff has moved to flutter/packages. (#28291 )

2019-02-21 21:59:41 -08:00

flutter_gallery

Minor UI tweaks to Cards demo based on internal feedback (#28215 )

2019-02-22 15:50:58 -05:00

flutter_view

Revert "Upgrade the Gradle script to Android plugin version 3.3.0 (#26913 )" (#27045 )

2019-01-24 14:29:08 -08:00

hello_world

Reland #27754 , now that bsdiff has moved to flutter/packages. (#28291 )

2019-02-21 21:59:41 -08:00

layers

Shader warm up (#27660 )

2019-02-22 15:37:02 -08:00

platform_channel

Reland #27754 , now that bsdiff has moved to flutter/packages. (#28291 )

2019-02-21 21:59:41 -08:00

platform_channel_swift

Reland #27754 , now that bsdiff has moved to flutter/packages. (#28291 )

2019-02-21 21:59:41 -08:00

platform_view

Revert "Upgrade the Gradle script to Android plugin version 3.3.0 (#26913 )" (#27045 )

2019-01-24 14:29:08 -08:00

stocks

Reland #27754 , now that bsdiff has moved to flutter/packages. (#28291 )

2019-02-21 21:59:41 -08:00

README.md

#19060 Update material.google.com links to material.io (#26807 )

2019-02-01 10:14:48 -08:00

README.md

Flutter Examples

This directory contains several examples of using Flutter. To run an example, use flutter run inside that example's directory. See the getting started guide to install the flutter tool.

For additional samples, see the flutter/samples repo.

Available examples include:

Hello, world The hello world app is a minimal Flutter app that shows the text "hello, world."
Flutter gallery The flutter gallery app showcases Flutter's widgets, including its implementation of material design.
Layers The layers vignettes show how to use the various layers in the Flutter framework. For details, see the layers README.
Platform Channel The platform channel app demonstrates how to connect a Flutter app to platform-specific APIs. For documentation, see https://flutter.io/platform-channels/.
Platform Channel Swift The platform channel swift app is the same as platform channel but the iOS version is in Swift and there is no Android version.

Notes

Note on Gradle wrapper files in .gitignore:

Gradle wrapper files should normally be checked into source control. The example projects don't do that to avoid having several copies of the wrapper binary in the Flutter repo. Instead, the Gradle wrapper is injected by Flutter tooling, and the wrapper files are .gitignore'd to avoid making the Flutter repository dirty as a side effect of running the examples.