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dawn / tint / d7482db884778c58ac59ebc5bbf3debd855df9f7
commitd7482db884778c58ac59ebc5bbf3debd855df9f7[log] [tgz]
authorTint team <no-reply@google.com>Thu Jan 05 10:06:12 2023 +0000
committerTint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu Jan 05 10:06:12 2023 +0000
treec647bc1356492a98487a9fbc01a9ad2db47ab3ae
parent16cdfec2f6cf7da4074b40a80d28aa2ee66feeda [diff]
Import Tint changes from Dawn

Changes:
  - 8e2c3e14f9bc165d76ccf87772828a142203846d tint/resolver: Adjust diagnostic source for member access... by Ben Clayton <bclayton@google.com>
  - 8937ec4e72e2a4b0613c9635099c7c57782631ba spirv-reader: disable Clspv-related test by David Neto <dneto@google.com>
  - 011e95a2ff78a6f60e8728842126d903042e4c8a Add missing include of type_traits by Hans Wennborg <hans@chromium.org>
  - efdfc6bbcac307cab149759504ef4b37a22913a0 tint/gn: Use Unix diagnostic printer on macOS by James Price <jrprice@google.com>
  - cf1f4658aed655ae032cd69878873b5ca5225cb7 tint/resolver: Fix ICE on short-name type used as identif... by Ben Clayton <bclayton@google.com>
  - 0fa5fb16bd4d54a7d8b3c26e76f9f03c55c8cfd2 tint: fix clang-cl compilation by Ángel Eduardo García Hernández <egarcia@reversedgames.com>
  - f3f813eb0c1fe6a3dd87fd048a1f352dee448a05 tint: fix const eval short-circuiting with mixed runtime ... by Ben Clayton <bclayton@google.com>
  - be367b73ae9c5d043fd9934c87636b09a9da9099 Reduce shader complexity for external textures by Ben Clayton <bclayton@google.com>
GitOrigin-RevId: 8e2c3e14f9bc165d76ccf87772828a142203846d
Change-Id: I2e1a30b3f13df6352d768763c14ded4ee9c9959a
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/116135
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
15 files changed
tree: c647bc1356492a98487a9fbc01a9ad2db47ab3ae
  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.