commit | 3eff52d8327fade6c078801f808d7e33b3999cc9 | [log] [tgz] |
---|---|---|
author | Jonah Williams <jonahwilliams@google.com> | Thu Apr 25 13:23:56 2024 -0700 |
committer | dart-internal-monorepo <dart-internal-monorepo@dart-ci-internal.iam.gserviceaccount.com> | Thu Apr 25 13:30:59 2024 -0700 |
tree | 57007c4cfb4901bfc30e057d6a3e68dccbe0e207 | |
parent | a5ab37b848818995bbafdf30df4730fcd9bedcf7 [diff] |
[Impeller] kick off registration and initial PSO compilation of runtime effect earlier. (#52381) I thought about changing this API so that it blocks on compilation, but I think that isn't necesasary as the workload can happen while the UI thread is building. Plus, even blocking on shader completion does not guarantee that we won't need to compile a variant anyway. While I was at it I moved the descriptor sets computation to the runtime effect constructor. With this change the pipleine variant used during the frame is produced much faster than the initial 12ms compilation. ![image](https://github.com/flutter/engine/assets/8975114/42626676-0a71-4503-a3e9-4109c36fbbef) Fixes https://github.com/flutter/flutter/issues/113719 Fixes https://github.com/flutter/flutter/issues/141222 https://dart.googlesource.com/external/github.com/flutter/engine/+/fd437e7c989cd5e21f8a1de80dff76fdbfbfcde5
Monorepo is:
With depot_tools installed and on your path, create a directory for your monorepo checkout and run these commands to create a gclient solution in that directory:
mkdir monorepo cd monorepo gclient config --unmanaged https://dart.googlesource.com/monorepo gclient sync -D
This gives you a checkout in the monorepo directory that contains:
monorepo/ DEPS - the DEPS used for this gclient checkout commits.json - the pinned commits for Dart, flutter/engine, and flutter/flutter tools/ - scripts used to create monorepo DEPS engine/src/ - the flutter/buildroot repo flutter/ - the flutter/engine repo out/ - the build directory, where Flutter engine builds are created third_party/ - Flutter dependencies checked out by DEPS dart/ - the Dart SDK checkout. third_party - Dart dependencies, also used by Flutter flutter/ - the flutter/flutter repo
Flutter's instructions for building the engine are at Compiling the engine
They can be followed closely, with a few changes:
goma_ctl ensure_start
is sufficient.Example build commands that work on linux:
MONOREPO_PATH=$PWD if [[ ! $PATH =~ (^|:)$MONOREPO_PATH/flutter/bin(:|$) ]]; then PATH=$MONOREPO_PATH/flutter/bin:$PATH fi export GOMA_DIR=$(dirname $(command -v gclient))/.cipd_bin goma_ctl ensure_start pushd engine/src flutter/tools/gn --goma --no-prebuilt-dart-sdk --unoptimized --full-dart-sdk autoninja -C out/host_debug_unopt popd
The Flutter commands used to build and run apps will use the locally built Flutter engine and Dart SDK, instead of the one downloaded by the Flutter tool, if the --local-engine
option is provided.
For example, to build and run the Flutter spinning square sample on the web platform,
MONOREPO_PATH=$PWD cd flutter/examples/layers flutter --local-engine=host_debug_unopt \ -d chrome run widgets/spinning_square.dart cd $MONOREPO_PATH
To build for desktop, specify the desktop platform device in flutter run
as -d macos
or -d linux
or -d windows
. You may also need to run the command
flutter create --platforms=windows,macos,linux
on existing apps, such as sample apps. New apps created with flutter create
already include these support files. Details of desktop support are at Desktop Support for Flutter
Tests in the Flutter source tree can be run with the flutter test
command, run in the directory of a package containing tests. For example:
MONOREPO_PATH=$PWD cd flutter/packages/flutter flutter test --local-engine=host_debug_unopt cd $MONOREPO_PATH
Please file an issue or email the dart-engprod team with any problems with or questions about using monorepo.
We will update this documentation to address them.
flutter
commands may download the engine and Dart SDK files for the configured channel, even though they will be using the local engine and its SDK.gclient sync
needs to be run in an administrator session, because some installed dependencies create symlinks.