Google Git
Sign in
dawn / tint / 2e186f29916a194f4ebc6bc6836ba375ca904ad8
commit2e186f29916a194f4ebc6bc6836ba375ca904ad8[log] [tgz]
authorTint team <no-reply@google.com>Wed May 11 08:42:48 2022 +0000
committerTint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed May 11 08:42:48 2022 +0000
treeffda493d29e24ba13e90d92f2ec8425801ac891d
parenta06a54bb33149d83e23134463932e3b73d87b2a1 [diff]
Import Tint changes from Dawn

Changes:
  - 824e824709a70401b4862cf6e1adf3a0a2a84c49 tint: Rename float / int literal tokens by Ben Clayton <bclayton@google.com>
  - 508e4a5a8227fe6354f7d5a70afac792695dae6c tint: Add abstract AInt and AFloat typedefs by Ben Clayton <bclayton@google.com>
  - 0a3cda99115e6d0da055dc8db2198819a4112e8d tint: Replace all ProgramBuilder float literals with '_f'... by Ben Clayton <bclayton@google.com>
  - 636e3d0111081026e718f7efaf3e46fcca5768a6 tint: Add a negation operator to Number by Ben Clayton <bclayton@google.com>
  - 17fa42d5274acc8693ed0d68fb2b26cf27adcf3d tint: Prevent Expr() implicit conversion to bool by Ben Clayton <bclayton@google.com>
  - 41285aa57874023f346a06f48cdf7c218c771d0e tint: Lex different tokens for float suffixes by Ben Clayton <bclayton@google.com>
  - 6c9e475211042d6d70caaae9f45fc0ed4901789a tint: Support dot4I8Packed and dot4U8Packed in sem by Jiawei Shao <jiawei.shao@intel.com>
GitOrigin-RevId: 824e824709a70401b4862cf6e1adf3a0a2a84c49
Change-Id: I12013f4c1cad059931d567c0a72bf7ab5969c89d
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/89740
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
119 files changed
tree: ffda493d29e24ba13e90d92f2ec8425801ac891d
  1. .vscode/
  2. build_overrides/
  3. docs/
  4. include/
  5. infra/
  6. kokoro/
  7. src/
  8. test/
  9. third_party/
  10. tools/
  11. .clang-format
  12. .gitignore
  13. .gn
  14. AUTHORS
  15. BUILD.gn
  16. CMakeLists.txt
  17. CMakeSettings.json
  18. CODE_OF_CONDUCT.md
  19. CPPLINT.cfg
  20. DEPS
  21. Doxyfile
  22. LICENSE
  23. OWNERS
  24. PRESUBMIT.py
  25. README.md
  26. standalone.gclient
  27. 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.