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dawn / tint / 2e5310ef1990569d3075d2427bcff3624dc3ebd1
commit2e5310ef1990569d3075d2427bcff3624dc3ebd1[log] [tgz]
authorTint team <no-reply@google.com>Thu Sep 01 15:56:49 2022 +0000
committerTint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu Sep 01 15:56:49 2022 +0000
tree1a75f39b7b8bab0865f1adcb242350903398f734
parentd4ab4e6234f026627e395ccc9c40555bb2d45072 [diff]
Import Tint changes from Dawn

Changes:
  - 426b47e4816542659fdce29b3c689045d288e199 tint: add missing F16 conversion expression support by Zhaoming Jiang <zhaoming.jiang@intel.com>
  - 0c7c23b9c4b84d0c241b4e970116d7f89c3fa4b6 tint: Misc hash / container contract improvements by Ben Clayton <bclayton@google.com>
  - 6a17e33f3dafa0e9d6c9109c53223fc7b89c83af tint/writer: Remove spirv::Operand hasher by Ben Clayton <bclayton@google.com>
  - b04d992f8395c812aacc727f0fa1150bddbe5c49 tint/utils: Fix Hashmap::GetOrCreate() for map mutation i... by Ben Clayton <bclayton@google.com>
  - b6d524380ef9c3311ef999e59884bb040273360f tint: Improve resolver test helper to specify more than o... by Antonio Maiorano <amaiorano@google.com>
  - cd716e6f01ae658501ad5471bac67926386398eb tint::CloneContext: Use Hashmap::Generation() by Ben Clayton <bclayton@google.com>
  - 4e0335c5afec9d64203a9e43d83fd1ebc0fe29f7 tint/utils: Add Generation() to Hashmap and Hashset. by Ben Clayton <bclayton@google.com>
  - ff0295ebd88c3bb0343f01404d991a06dd8fa7e8 tint: Fix AInt -> AFloat implicit conversion from constru... by Antonio Maiorano <amaiorano@google.com>
  - 5361d9e778fb839c0e63adcc86edae267c5b3b44 Convert @id to an expression. by dan sinclair <dsinclair@chromium.org>
GitOrigin-RevId: 426b47e4816542659fdce29b3c689045d288e199
Change-Id: I805d4ad728f7bf0a7baf11707496c6d07cec14b0
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/100960
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@chromium.org>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
54 files changed
tree: 1a75f39b7b8bab0865f1adcb242350903398f734
  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.