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dawn / tint / ac582b45e885b59fc4bc6e2948f011aea639fb07
commitac582b45e885b59fc4bc6e2948f011aea639fb07[log] [tgz]
authorTint team <no-reply@google.com>Fri Aug 26 21:24:42 2022 +0000
committerTint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Aug 26 21:24:42 2022 +0000
treeed684cee0bc0efebc361f46eba198cef60ad6f1a
parent2e4901757ced7452bcfd02fdacc8c71f537892c3 [diff]
Import Tint changes from Dawn

Changes:
  - 7517e213cf031d0216cca3c9e5ab4f4b27ac49a4 Update `workgroup_size` to use `expression`. by dan sinclair <dsinclair@chromium.org>
  - 436b4a2bd06e0b058c25e69ffd8c2cd650b1752d Drop `maybe_` from method names. by dan sinclair <dsinclair@chromium.org>
  - 202362f47db4f81df9dcee8d97a4fef295cf4579 Convert to new expression grammar by dan sinclair <dsinclair@chromium.org>
  - acdf6e1a53cac328a863006369111b7f74402c09 Remove `ast::VariableBindingPoint` in favour of `sem::Bin... by dan sinclair <dsinclair@chromium.org>
  - 93c2d559a12bf72c7eb96b6a2a5a5bb77ecdc4b4 tint/utils: Default to using Hasher instead of std::hash by Ben Clayton <bclayton@google.com>
  - 18dc315ccb830b4c52dd6b0fcab47d255bd59897 tint::CloneContext: Use utils::Hashset and utils::Hashmap by Ben Clayton <bclayton@google.com>
  - b90b6bff1d46056c7471fa39907d10b9fa6636d2 tint: Minor no-op cleanup changes by Ben Clayton <bclayton@google.com>
  - e3f2005b2ddc8467adacaa84808f00f936148412 tint/utils: Cleanup & optimize hash utilities by Ben Clayton <bclayton@google.com>
  - e5d337171a1d20fa89878a09892ca9d9228be6dd tint: Castable - optimize IsAnyOf() by Ben Clayton <bclayton@google.com>
  - cdcc85973bb0c9871100940d44b8e31680c21e2c tint: Clean up AddSpirvBlockAttribute by Ben Clayton <bclayton@google.com>
  - 4964d9bc20dabc5d8773d588ec742556ada1b7f1 Convert `@align` to hold an expression. by dan sinclair <dsinclair@chromium.org>
GitOrigin-RevId: 7517e213cf031d0216cca3c9e5ab4f4b27ac49a4
Change-Id: I7f30978e56d735371e311f209b7ca1107387e421
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/100280
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
67 files changed
tree: ed684cee0bc0efebc361f46eba198cef60ad6f1a
  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.