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dawn / tint / 44240d26600a12748812dc1ad6760594c68fba51
commit44240d26600a12748812dc1ad6760594c68fba51[log] [tgz]
authorTint team <no-reply@google.com>Wed Apr 26 10:40:16 2023 +0000
committerTint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Apr 26 10:40:16 2023 +0000
treed1569cc0a4a0747e20a930ad18c82f53110542c0
parent942ac0b0ae228fd16b56a487526217365068b2bb [diff]
Import Tint changes from Dawn

Changes:
  - aa97bb5327c375e89ec1f0ee612b0e00093b9c34 [ir] Add assignment statements by dan sinclair <dsinclair@chromium.org>
  - 5b541ff3c287f06b74350827628249152293f407 [ir] Mark const variable as skipped. by dan sinclair <dsinclair@chromium.org>
  - 5aa7ef2bc077134fca8afbe584016916adecc064 [ir] Add Unary expressions by dan sinclair <dsinclair@chromium.org>
  - 339719967ebfb3493cb351bc6a8a82388bca1fd3 [ir] Remove internal `bool` returns. by dan sinclair <dsinclair@chromium.org>
  - 69108d048b56073ccc0ac7d46c254c62a87ac205 [ir] Add ir::Discard by dan sinclair <dsinclair@chromium.org>
  - ae39e6d62808b1b3899430c38f41f618ed9337d7 spirv-reader: Declare multiuse constant composites by James Price <jrprice@google.com>
  - a41693babb6069d4487a1cd2ab114aa87ee0fe78 tint/msl: Avoid cloning a built-in struct by James Price <jrprice@google.com>
  - 99a0ded622559bd21f063415299a2ee7b7514233 tint: Use type::Struct::Name in CreateASTTypeFor by James Price <jrprice@google.com>
  - 03f9f5f538121da7bc3c6175de9fd38fa2aaf0e0 [ir] Rename ir::Temp by dan sinclair <dsinclair@chromium.org>
  - d36740509fa6daa1200ee47f6dbbed66df652aeb spirv-reader: Error on multiple Position built-ins by James Price <jrprice@google.com>
  - bdc2d249007af5b71584ae45f61ca568d9bbfb32 Fix MSL invariant translation. by dan sinclair <dsinclair@chromium.org>
  - 378a1f51a289147d5fa8065c4f2ef25a757ef7ae Use optional in Lexer. by dan sinclair <dsinclair@chromium.org>
  - 889edb18b2740faa5efb35f5020103f7db2fb216 Add simple program for perf testing. by dan sinclair <dsinclair@chromium.org>
  - d14a9fbb6e3d398cbca9d7404eb6ffaa0fbe5646 tint/resolver: Fix null deref by Ben Clayton <bclayton@google.com>
GitOrigin-RevId: aa97bb5327c375e89ec1f0ee612b0e00093b9c34
Change-Id: I8fb8032fcea440d70d07e0fcd94bb4c05973e2ad
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/129040
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
52 files changed
tree: d1569cc0a4a0747e20a930ad18c82f53110542c0
  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. 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.