|author||Tint team <firstname.lastname@example.org>||Sat Sep 17 19:29:48 2022 +0000|
|committer||Tint LUCI CQ <email@example.com>||Sat Sep 17 19:29:48 2022 +0000|
Import Tint changes from Dawn Changes: - 90b29e500a3ee0310c4f0df18eda68a2803fb2ac tint/transform/std140: Correctly handle nested / bare mat... by Ben Clayton <firstname.lastname@example.org> - 84b43d61fa37b216e99f290e636d6dae7520c522 tint/writer: Handle unnested, uniform matCx2 matrices by Ben Clayton <email@example.com> - a3f2bf6c60465c24e4ba706142cd47b7b357cfcb spirv-reader: phis as a particular case of hoisting to a ... by David Neto <firstname.lastname@example.org> - ebc5bba6718e5c1193fd116dac537b69dd1ec35b tint: const eval of binary XOR by Antonio Maiorano <email@example.com> GitOrigin-RevId: 90b29e500a3ee0310c4f0df18eda68a2803fb2ac Change-Id: I2247f4366934bb709291f09fade1c0f2888f50a5 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/102700 Reviewed-by: Ben Clayton <firstname.lastname@example.org> Kokoro: Kokoro <email@example.com> Commit-Queue: Ben Clayton <firstname.lastname@example.org>
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.