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dawn / tint / a2612d9eb6ec5b03a0c0ee46d212ee4dab3cc9d4
commita2612d9eb6ec5b03a0c0ee46d212ee4dab3cc9d4[log] [tgz]
authorTint team <no-reply@google.com>Fri Mar 03 14:22:19 2023 +0000
committerTint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Mar 03 14:22:19 2023 +0000
tree83997ac8f3d610f18e27e5fe4b03efdbee8afb04
parentae530a0dac1ee15be1d396d221567a296ed557a6 [diff]
Import Tint changes from Dawn

Changes:
  - 6cc183c85a24e8dafbba87fd0f242ede0810f478 Generic template and forward in stringstream. by dan sinclair <dsinclair@chromium.org>
  - 03de0e83aeb62e8282c3a7b31d2ba01155ebae30 Move tint::transform::Robustness to a santizier transform by Ben Clayton <bclayton@google.com>
  - d7ee9c1510dc7b90457fd77c1cc4359492d416fa tint/sem: Add Declaration() override for IndexAccessorExp... by Ben Clayton <bclayton@google.com>
  - 1edc2729049705022c6aff1188bc32d2164af84a tint/transform: Implement CreateASTTypeFor() for pointers by Ben Clayton <bclayton@google.com>
  - 57be2ff2eb03eba86fb4b3e0b1bd9cc1869969fa tint: Change CloneContext::Replace() to replace the map e... by Ben Clayton <bclayton@google.com>
  - 26157557e86d8aa80e152660e4c0410a455d7a12 tint/transform/utils: Add HoistToDeclBefore::Replace() by Ben Clayton <bclayton@google.com>
  - c0c8abc56978905bf05fccafeeb406709d885366 tint/resolver: Add missing ResolvedIdentifier case for 'l... by Ben Clayton <bclayton@google.com>
  - 3cde73cb1a07f8dc88974ddd7324011956f592f1 tint/transform/utils: Correctly scope for-loop init by Ben Clayton <bclayton@google.com>
GitOrigin-RevId: 6cc183c85a24e8dafbba87fd0f242ede0810f478
Change-Id: Iac8248e5d7f6906ff486082f43466207fc64f6c4
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/122500
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
186 files changed
tree: 83997ac8f3d610f18e27e5fe4b03efdbee8afb04
  1. .vscode/
  2. build_overrides/
  3. docs/
  4. include/
  5. infra/
  6. kokoro/
  7. src/
  8. third_party/
  9. tools/
  10. .clang-format
  11. .gitignore
  12. .gn
  13. AUTHORS
  14. BUILD.gn
  15. CMakeLists.txt
  16. CMakeSettings.json
  17. CODE_OF_CONDUCT.md
  18. CPPLINT.cfg
  19. DEPS
  20. Doxyfile
  21. LICENSE
  22. OWNERS
  23. PRESUBMIT.py
  24. README.md
  25. standalone.gclient
  26. tint_overrides_with_defaults.gni
README.md

Tint

Note: This repo is read-only, minimized mirror of the Dawn repo.

Tint changes should be made in the Dawn repo.

Tint is a compiler for the WebGPU Shader Language (WGSL).

This is not an officially supported Google product.

Requirements

  • Git
  • CMake (3.10.2 or later)
  • Ninja (or other build tool)
  • Python, for fetching dependencies
  • depot_tools in your path

Build options

  • TINT_BUILD_SPV_READER : enable the SPIR-V input reader (off by default)
  • TINT_BUILD_WGSL_READER : enable the WGSL input reader (on by default)
  • TINT_BUILD_SPV_WRITER : enable the SPIR-V output writer (on by default)
  • TINT_BUILD_WGSL_WRITER : enable the WGSL output writer (on by default)
  • TINT_BUILD_FUZZERS : enable building fuzzzers (off by default)

Building

Tint uses Chromium dependency management so you need to install depot_tools and add it to your PATH.

Getting source & dependencies

# Clone the repo as "tint"
git clone https://dawn.googlesource.com/tint tint
cd tint

# Bootstrap the gclient configuration
cp standalone.gclient .gclient

# Fetch external dependencies and toolchains with gclient
gclient sync

Compiling using CMake + Ninja

mkdir -p out/Debug
cd out/Debug
cmake -GNinja ../..
ninja # or autoninja

Compiling using CMake + make

mkdir -p out/Debug
cd out/Debug
cmake ../..
make # -j N for N-way parallel build

Compiling using gn + ninja

mkdir -p out/Debug
gn gen out/Debug
autoninja -C out/Debug

Fuzzers on MacOS

If you are attempting fuzz, using TINT_BUILD_FUZZERS=ON, the version of llvm in the XCode SDK does not have the needed libfuzzer functionality included.

The build error that you will see from using the XCode SDK will look something like this:

ld: file not found:/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/11.0.0/lib/darwin/libclang_rt.fuzzer_osx.a

The solution to this problem is to use a full version llvm, like what you would get via homebrew, brew install llvm, and use something like CC=<path to full clang> cmake .. to setup a build using that toolchain.

Checking [chromium-style] issues in CMake builds

The gn based work flow uses the Chromium toolchain for building in anticipation of integration of Tint into Chromium based projects. This toolchain has additional plugins for checking for style issues, which are marked with [chromium-style] in log messages. This means that this toolchain is more strict then the default clang toolchain.

In the future we will have a CQ that will build this work flow and flag issues automatically. Until that is in place, to avoid causing breakages you can run the [chromium-style] checks using the CMake based work flows. This requires setting CC to the version of clang checked out by gclient sync and setting the TINT_CHECK_CHROMIUM_STYLE to ON.

mkdir -p out/style
cd out/style
cmake ../..
CC=../../third_party/llvm-build/Release+Asserts/bin/clang cmake -DTINT_CHECK_CHROMIUM_STYLE=ON ../../ # add -GNinja for ninja builds

Issues

Please file any issues or feature requests at https://bugs.chromium.org/p/tint/issues/entry

Contributing

Please see the contributing guide in the Dawn repo.