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dawn / tint / 5ba36b365b0bd625d4d2e451c0a6fbb54435eafc
commit5ba36b365b0bd625d4d2e451c0a6fbb54435eafc[log] [tgz]
authorTint team <no-reply@google.com>Mon Jul 18 08:41:31 2022 +0000
committerTint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com>Mon Jul 18 08:41:31 2022 +0000
tree12d3a97ea7ee84b8b154049c2d5fcf3f9ddc41cf
parent7067814e91ca47ec742dd9cdfe4b7de682c86d84 [diff]
Import Tint changes from Dawn

Changes:
  - 605b7fbadcc85f67ea2253bcd903784d9f602534 tint/writer/glsl: Simplify map keys with UnorderedKeyWrap... by Ben Clayton <bclayton@google.com>
  - ac660c27942e95577aae79885307d3777de58050 tint: Implement const eval of unary complement by Ben Clayton <bclayton@google.com>
  - 83bd738ab4e49157599d51b998484a8e3a068d4b tint/resolver: Track evaluation stage by Ben Clayton <bclayton@google.com>
  - db8959555036296070d2d5004950f32ee1b85c57 tint: Add a Count() method to BlockAllocator. by Ben Clayton <bclayton@google.com>
  - 6a80ce6c66bf7dfc2e61d530c82b94105feca491 tint/resolver: Use the intrinsic table for type const dis... by Ben Clayton <bclayton@google.com>
  - 8b0ceea0b1da712480388f93a1d012a16081890c tint: Clean up legacy type cruft by Ben Clayton <bclayton@google.com>
  - f19cb029b84f67d4bedf357626d26d809af49a8c tint: Remove single scalar matrix constructors. by Ben Clayton <bclayton@google.com>
  - 65c5c9d92b2d1b8d73bc7f1fca9a3d54a29ec93c tint/resolver: Add ConstEval class by Ben Clayton <bclayton@google.com>
  - cfe07a1b333024fe79b4d341a0e5539e9d9d0203 tint/resolver: Shuffle validation code by Ben Clayton <bclayton@google.com>
  - e0ecd86e73ff9e6def9e1460cb0291f175044046 tint/writer/glsl: Fix emitting float modulo with mixing t... by Zhaoming Jiang <zhaoming.jiang@intel.com>
  - 32bdf41ed38155f91c199429233040c5a57a262a tint/resolver: Remove logic for module-scope let by Ben Clayton <bclayton@google.com>
GitOrigin-RevId: 605b7fbadcc85f67ea2253bcd903784d9f602534
Change-Id: I29c79a615b90e418e99b68e7a8b3809e7bb47518
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/96340
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
51 files changed
tree: 12d3a97ea7ee84b8b154049c2d5fcf3f9ddc41cf
  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.