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dawn / tint / e74ea3628731c3b955a32d42a39ea106620d98f5
commite74ea3628731c3b955a32d42a39ea106620d98f5[log] [tgz]
authorTint team <no-reply@google.com>Tue Apr 23 13:15:02 2024 +0000
committerTint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com>Tue Apr 23 13:15:02 2024 +0000
tree37bcea1d4131743254d82df20a792f6fef7955e4
parentf54df261a4839af3638c5a6f85edf296da0a9477 [diff]
Import Tint changes from Dawn

Changes:
  - c96f8183280aa15e26e7fd9e197c818b7d219cf8 [tint][fuzz][ir] Add BindingRemapper fuzzer by Ben Clayton <bclayton@google.com>
  - 3e18d6aead7a9bfce0a44e1cc224d8aad23a2563 [tint][fuzz][ir] Add BinaryPolyfill fuzzer by Ben Clayton <bclayton@google.com>
  - b5045a6c9881bf4113313d534eaf8abdb235659b [tint][fuzz][ir] Add Bgra8UnormPolyfill fuzzer by Ben Clayton <bclayton@google.com>
  - 8801bee379627f4a258d278a8a7a2f196d1cca9c [tint][fuzz][ir] Add AddEmptyEntryPoint fuzzer by Ben Clayton <bclayton@google.com>
  - 6391acef4b6007a827546c5f226a384af4d008cb [tint][fuzz][ast] Add AddEmptyEntryPoint fuzzer by Ben Clayton <bclayton@google.com>
  - c4d9ee724ea25288a5248ceb469514c0273eea7b [tint][fuzz][ast] Add AddBlockAttribute fuzzer by Ben Clayton <bclayton@google.com>
  - ba06f4775aa0daeccd5af239f01fbdcd86a65e38 [tint][fuzz] Limit the first_index_offset value by Ben Clayton <bclayton@google.com>
  - bc99356b1de0296043aebab79b9451d025c273c5 [Compat] Fix a bug when textureDimension with 1 arg is fi... by Shrek Shao <shrekshao@google.com>
  - d011f42aeced8eb0ac7f3e999e8819baea66117d [tint][fuzz] Add fuzzer command line flags by Ben Clayton <bclayton@google.com>
  - 988805ac8637dc9d93887fe521f5a5805600d02d [tint][spirv-ast] Fix emission of discard followed by sta... by Ben Clayton <bclayton@google.com>
GitOrigin-RevId: c96f8183280aa15e26e7fd9e197c818b7d219cf8
Change-Id: Ic3ab680cb92fe4c0427ddc35186ad4307e810f4e
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/185320
Commit-Queue: dan sinclair <dsinclair@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: dan sinclair <dsinclair@google.com>
22 files changed
tree: 37bcea1d4131743254d82df20a792f6fef7955e4
  1. .vscode/
  2. build_overrides/
  3. docs/
  4. include/
  5. infra/
  6. kokoro/
  7. scripts/
  8. src/
  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. LICENSE
  22. OWNERS
  23. PRESUBMIT.py
  24. README.md
  25. standalone.gclient
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.