commit	f29007b756894d77eb35c87eb4475f4d897bb8ac	[log] [tgz]
author	Tint team <no-reply@google.com>	Wed May 10 11:14:34 2023 +0000
committer	Tint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com>	Wed May 10 11:14:34 2023 +0000
tree	e966473c9a94a180a05fa4f375d198354553a855
parent	185b78e16bbb4005abb6764cd74cf7e809e4ecf2 [diff]

Import Tint changes from Dawn

Changes:
  - 49bae34149a604e5ea69153979dcf07a9c2cbd7f [ir][spirv-writer] Implement binary add instructions by James Price <jrprice@google.com>
  - 5e7807f02bf79fa68910a051a868531e89cc84dc [ir][spirv-writer] Emit blocks by James Price <jrprice@google.com>
  - 577b164b9145e81992541e2f278eb0c789f0baa1 [ir][spirv-writer] Emit scalar constant values by James Price <jrprice@google.com>
  - a8236a55295a3e7c335c1ae2ab2fab3e5f4593ec tint/ir: Remove value id field. by Ben Clayton <bclayton@google.com>
  - 3731ce8f21bc737773805e53fc3ff2d330e1b5f1 tint: Use new string utilities in various places by Ben Clayton <bclayton@google.com>
  - ce1025fde36d09017ff33eec66a12f965960b738 tint/utils: Add more string utilities. by Ben Clayton <bclayton@google.com>
  - fbef69b61c50edfab5b8df5b8095ab74e48ffc9d [ir][spirv-writer] Fix MSVC build by James Price <jrprice@google.com>
  - 6c1812305823e7552cb877e3fdd47e9022c54752 [spirv-reader] Avoid name clashes with builtins by James Price <jrprice@google.com>
  - 567a53e87cef93a2f4086765920b2c401c7ff0a7 tint/utils: Add Vector::Any(), Vector::All() and predicates by Ben Clayton <bclayton@google.com>
  - 13ca70fa0886e4588dda6f744d777b65c9744714 Reland "ir/spirv-writer: Emit entry point declarations" by James Price <jrprice@google.com>
  - 81fc1098228bdbb8098b1ff6b9c52a47d86e7113 [tint] Fix unshadowing of abstract const users by James Price <jrprice@google.com>
  - e162a1adeeab1fe0c3f61cbd9879597ce9de0cbe [spirv-writer] Don't emit abstract accessor source by James Price <jrprice@google.com>
  - f91b77dd6dee2ac969bc553d73c717ae42211840 [spirv-reader] Use builtin matrix aliases by James Price <jrprice@google.com>
  - 114bae24b0fbe23632cc849e04cd1299bfea41eb [spirv-reader] Use builtin vector aliases by James Price <jrprice@google.com>
GitOrigin-RevId: 49bae34149a604e5ea69153979dcf07a9c2cbd7f
Change-Id: Id5e7d7976f7efd660d95195954e161182c280d4e
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/132380
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>

74 files changed

tree: e966473c9a94a180a05fa4f375d198354553a855

README.md

Tint

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.

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 guide in the Dawn repo.