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dawn / tint / 5062c025640a19bc50dc7fa09eefbb060ee0b6bf
commit5062c025640a19bc50dc7fa09eefbb060ee0b6bf[log] [tgz]
authorTint team <no-reply@google.com>Tue Oct 18 22:50:55 2022 +0000
committerTint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com>Tue Oct 18 22:50:55 2022 +0000
tree06b4aca38b9a1cd17aa1e59c67a09d05748219e0
parent21ede9d0b91213a9de580e94d179933726084e60 [diff]
Import Tint changes from Dawn

Changes:
  - 79195ca42a7712ce671faff3bc9f96010874cbd3 tint/uniformity: implement analysis for full and partial ... by Antonio Maiorano <amaiorano@google.com>
  - 33a090f90f73277e5ea9959c21d35f7586688148 Remove unused SwitchStatement method. by dan sinclair <dsinclair@chromium.org>
  - 29fb8f8eef24ea3c80d3c2545a07e798e7f8e199 tint: optimize compile time for const_eval_*_test files by Antonio Maiorano <amaiorano@google.com>
  - 3fd42ae042e0a97de8af43061b739f3b492629a1 Convert the location attribute to expressions. by dan sinclair <dsinclair@chromium.org>
  - 155165cd52df5692d7af7f6158fb21d7490a4c88 Convert the id attribute to expressions. by dan sinclair <dsinclair@chromium.org>
  - f50ad7f63d89d8ba07076856924e2bbd7f53b1a0 tint/resolver: Make member attribute diagnostics consistent by Ben Clayton <bclayton@google.com>
  - df3a0462ad69db351d84ab24ce23279f566f6e78 tint/sem: Remove 'sem_' prefix from array / struct tests by Ben Clayton <bclayton@google.com>
  - c574151e7293f5ab2961162d7b134d70990e3bd6 tint: Remove junk from copyright header by Ben Clayton <bclayton@google.com>
  - cd4b6c147912a1f0d3a198667a31e32e96950e51 tint/sem: Add missing 'const' to static const char* by Ben Clayton <bclayton@google.com>
  - 4e0689b6653c276b626c958081786b36aee0e8ce tint/sem: Move variable decls to CompoundStatement by Ben Clayton <bclayton@google.com>
GitOrigin-RevId: 79195ca42a7712ce671faff3bc9f96010874cbd3
Change-Id: I4f27d61d0452e06b2be66ee8c03605f7b7e59074
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/106240
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Copybara Prod <copybara-worker-blackhole@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
32 files changed
tree: 06b4aca38b9a1cd17aa1e59c67a09d05748219e0
  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.