|author||Tint team <email@example.com>||Fri Jun 17 10:31:38 2022 +0000|
|committer||Tint LUCI CQ <firstname.lastname@example.org>||Fri Jun 17 10:31:38 2022 +0000|
Import Tint changes from Dawn Changes: - 4b88dbcf8e14aefafe858c931acb36f3ca2c622e Fixup continue support in while loops. by dan sinclair <email@example.com> - 57dcd3601ccb9392952f892711b42d0068903b7f Fixup merge test issue by dan sinclair <firstname.lastname@example.org> - 49d1a2d9502c35ac9a507ffa7d6b7130eb96af07 Add while statement parsing. by dan sinclair <email@example.com> - 2a8861d20ec425d7391631331089b41bd4b47933 tint: Rework errors around variable declarations by Ben Clayton <firstname.lastname@example.org> - 418e873ad28c0fed6722ee617ba56018c24d6926 tint: Make sure enable directives go first in ordered_glo... by Zhaoming Jiang <email@example.com> - 33563dc7d7b3cbec159e004f96b59fd479084635 tint/transform: Move State to anonymous namespace by James Price <firstname.lastname@example.org> GitOrigin-RevId: 4b88dbcf8e14aefafe858c931acb36f3ca2c622e Change-Id: Ic4b2bbdd348ad65ef27a6e80954decf0eff2a591 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/94080 Kokoro: Kokoro <email@example.com> Commit-Queue: Ben Clayton <firstname.lastname@example.org> Reviewed-by: Ben Clayton <email@example.com>
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.
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)
Tint uses Chromium dependency management so you need to install depot_tools and add it to your PATH.
# 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
mkdir -p out/Debug cd out/Debug cmake -GNinja ../.. ninja # or autoninja
mkdir -p out/Debug cd out/Debug cmake ../.. make # -j N for N-way parallel build
mkdir -p out/Debug gn gen out/Debug autoninja -C out/Debug
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.
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
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
Please file any issues or feature requests at https://bugs.chromium.org/p/tint/issues/entry
Please see the contributing guide in the Dawn repo.