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dawn / tint / 4c7f060870052c5ff866b3fd60786daa9af4b1bd
commit4c7f060870052c5ff866b3fd60786daa9af4b1bd[log] [tgz]
authorTint team <no-reply@google.com>Mon Sep 12 22:14:59 2022 +0000
committerTint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com>Mon Sep 12 22:14:59 2022 +0000
treee38ded26180f22351ccb746cdbbb5babf2d7a23f
parent147e2bf7fa77a6d335ec749ce31ee3bec9041e7e [diff]
Import Tint changes from Dawn

Changes:
  - 4b70776aed5923ce09ed6025c1914317246e2531 tint: Fix transform errors when calling arrayLength() as ... by Ben Clayton <bclayton@google.com>
  - 3526bc4f428aa1a6ef77aedd9b5b91d049bec0ec Remove GLSL override generation by dan sinclair <dsinclair@chromium.org>
  - e1854b2d721dc07224291dcfa2c842ff749212ef Remove SPIR-V override generation by dan sinclair <dsinclair@chromium.org>
  - f6a9404978b0030b79c5d35f38a13186e1c88dc6 Remove HLSL override generation by dan sinclair <dsinclair@chromium.org>
  - 5432767a04d5f0df835b5c563256f9aaf6e24544 Remove MSL override generation by dan sinclair <dsinclair@chromium.org>
  - 93df967003abc34dc283ffc575850492ce9d6e4c Update StructMember{Offset,Size}Attribute to expressions. by dan sinclair <dsinclair@chromium.org>
GitOrigin-RevId: 4b70776aed5923ce09ed6025c1914317246e2531
Change-Id: I0c4dfcc8c97a1bdbea626f207fa43ca3beaf8acd
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/101940
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
50 files changed
tree: e38ded26180f22351ccb746cdbbb5babf2d7a23f
  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.