|author||Tint team <email@example.com>||Mon Jun 13 08:11:05 2022 +0000|
|committer||Tint LUCI CQ <firstname.lastname@example.org>||Mon Jun 13 08:11:05 2022 +0000|
Import Tint changes from Dawn Changes: - cae289da70bf50336dad554258aa3ed2cfce1c81 tint: Fix exactly representable check in lexer by Zhaoming Jiang <email@example.com> - 0fb4e2c608f3b8235270d7286d703af152626e33 tint: f16 literal in WGSL lexer and check subnormal f32/f... by Zhaoming Jiang <firstname.lastname@example.org> - 856d6af57ea6d854f03de6ca5aa08fcd2296acf7 tint: uniformity: detect pointers assigned to in non-unif... by Antonio Maiorano <email@example.com> - 0fa572ff05d2a35c75369d4107f175780dbae15a Emit deprecation warnings for @stage. by dan sinclair <firstname.lastname@example.org> GitOrigin-RevId: cae289da70bf50336dad554258aa3ed2cfce1c81 Change-Id: I005c00e6fe5e5a974bc677fd63a1d6e02fca0904 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/93320 Commit-Queue: Ben Clayton <email@example.com> Kokoro: Kokoro <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.