CMake-only fork of https://dawn.googlesource.com/dawn with cleaned, vendored dependencies
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James Price 3fac602d6c Minor fixups for unicode CL
This didn't make the M100 release branch, so update the release notes.

Fix a type in one of the E2E test names.

Bug: tint:1437
Change-Id: I36c018a126f412607a55ff254add60dae4fa9ae5
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/81200
Auto-Submit: James Price <jrprice@google.com>
Kokoro: Ben Clayton <bclayton@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
2022-02-18 21:47:24 +00:00
.vscode .vscode: Fix quotations in windows 'configure' task 2021-07-21 13:24:21 +00:00
build_overrides GLSL writer: validate all entry points with glslang. 2021-10-14 14:39:36 +00:00
docs Minor fixups for unicode CL 2022-02-18 21:47:24 +00:00
fuzzers Add missing documentation to fuzzer code 2022-02-17 21:22:49 +00:00
include/tint Add Multiplanar External Texture Transform To Tint Header 2022-01-14 10:11:47 +00:00
infra/config Generate shorter bucket names in luci-scheduler.cfg. 2022-02-10 18:42:18 +00:00
kokoro kokoro: Use 'data' disk for build directory 2022-02-18 14:15:50 +00:00
samples reader/wgsl: Support unicode identifiers 2022-02-18 20:39:43 +00:00
src reader/wgsl: Support unicode identifiers 2022-02-18 20:39:43 +00:00
test Minor fixups for unicode CL 2022-02-18 21:47:24 +00:00
third_party GLSL: only build glslang if we're building samples. 2022-02-07 16:05:36 +00:00
tools Fix legacy non-inclusive language issues 2022-02-17 15:03:19 +00:00
.clang-format Initial commit 2020-03-02 15:47:43 -05:00
.gitignore .gitignore: Add thirdparty/benchmark 2022-01-24 16:01:31 +00:00
.gn build: Update tint to use C++17. 2022-01-06 09:23:11 +00:00
AUTHORS Add spirv-tools fuzzer 2021-06-24 18:10:46 +00:00
BUILD.gn BUILD.gn: Remove the temporary group with Dawn migrated. 2021-03-17 07:41:03 +00:00
CMakeLists.txt Put tint::debugger::Break() behind a build flag 2022-02-18 18:56:43 +00:00
CMakeSettings.json Add CMakeSettings.json with convenient defaults 2021-03-16 18:52:53 +00:00
CODE_OF_CONDUCT.md Initial commit 2020-03-02 15:47:43 -05:00
CONTRIBUTING.md CONTRIBUTING: Document gerrit quirks 2022-02-03 15:31:32 +00:00
CPPLINT.cfg Adding PRESUBMIT.py with a bunch of checks turned on 2020-06-03 13:41:41 +00:00
DEPS benchmarks: Add a basic set of benchmarks 2022-01-18 18:58:16 +00:00
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OWNERS Add my @chromium.org account to OWNERS 2022-02-10 19:57:53 +00:00
PRESUBMIT.py Fix legacy non-inclusive language issues 2022-02-17 15:03:19 +00:00
README.md Proposed process for experimental extensions 2021-04-27 17:55:07 +00:00
standalone.gclient Convert dependency management to using gclient 2020-03-05 15:58:27 +00:00
tint_overrides_with_defaults.gni Implement GLSL writer backend. 2021-10-06 18:55:10 +00:00

README.md

Tint

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 and CODE_OF_CONDUCT files on how to contribute to Tint.

Tint has a process for supporting experimental extensions.