|author||Tint team <email@example.com>||Wed May 11 08:42:48 2022 +0000|
|committer||Tint LUCI CQ <firstname.lastname@example.org>||Wed May 11 08:42:48 2022 +0000|
Import Tint changes from Dawn Changes: - 824e824709a70401b4862cf6e1adf3a0a2a84c49 tint: Rename float / int literal tokens by Ben Clayton <email@example.com> - 508e4a5a8227fe6354f7d5a70afac792695dae6c tint: Add abstract AInt and AFloat typedefs by Ben Clayton <firstname.lastname@example.org> - 0a3cda99115e6d0da055dc8db2198819a4112e8d tint: Replace all ProgramBuilder float literals with '_f'... by Ben Clayton <email@example.com> - 636e3d0111081026e718f7efaf3e46fcca5768a6 tint: Add a negation operator to Number by Ben Clayton <firstname.lastname@example.org> - 17fa42d5274acc8693ed0d68fb2b26cf27adcf3d tint: Prevent Expr() implicit conversion to bool by Ben Clayton <email@example.com> - 41285aa57874023f346a06f48cdf7c218c771d0e tint: Lex different tokens for float suffixes by Ben Clayton <firstname.lastname@example.org> - 6c9e475211042d6d70caaae9f45fc0ed4901789a tint: Support dot4I8Packed and dot4U8Packed in sem by Jiawei Shao <email@example.com> GitOrigin-RevId: 824e824709a70401b4862cf6e1adf3a0a2a84c49 Change-Id: I12013f4c1cad059931d567c0a72bf7ab5969c89d Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/89740 Commit-Queue: Ben Clayton <firstname.lastname@example.org> Kokoro: Kokoro <email@example.com> Reviewed-by: 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.