commit	61b92cbe0e121203561c77f511e3e96c3319c29f	[log] [tgz]
author	Tint team <no-reply@google.com>	Thu Apr 25 13:38:35 2024 +0000
committer	Tint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com>	Thu Apr 25 13:38:35 2024 +0000
tree	f8833abd3f6e8a5b46ac664bc8285894c3bd8e90
parent	19b77cc4604512d81f0d5ec715b2f2864fcdb2c3 [diff]

Import Tint changes from Dawn

Changes:
  - 6488e26e6b3742a78e3918d8000a82e2d325c94c [tint][fuzz][wgsl] Add Raise fuzzer by Ben Clayton <bclayton@google.com>
  - 50faf095a595281feb00d7cd05f225d46a9996fa [tint][fuzz][wgsl] Add PtrToRef fuzzer by Ben Clayton <bclayton@google.com>
  - 2a8c10e51d79ec119dca7475137c28b6f7d5b4b7 [tint][fuzz][wgsl] Add RenameConflicts fuzzer by Ben Clayton <bclayton@google.com>
  - 24aa34ee3fe4621a5be5cf0efeb3ced443f510f1 [tint][fuzz][wgsl] Add ValueToLet fuzzer by Ben Clayton <bclayton@google.com>
  - d07a2002494ccc6ece8bbeb13814d3d98e4ab75c [spirv] Fix dynamic indexes into constant arrays by James Price <jrprice@google.com>
  - 4f491bf8c370e4975672b3f5abd0f1de4a95f12e [ir] Validate block parameters by James Price <jrprice@google.com>
  - 750f71d3234ac9d49e175d5e7558b052e6b7519b [tint][ir] Track owning block in BlockParam by James Price <jrprice@google.com>
  - e5380b752f0f1f9d5950710af8cad0191fcd8122 [ir] Validate function parameters by James Price <jrprice@google.com>
  - 21517e4b5ff7944caf09200658e7444f5232cccb [ir] Add source map for a function and its params by James Price <jrprice@google.com>
  - e5fff2277474fbdc1b3d696c69346b088fc098aa [tint][ir] Track owning Function in FunctionParam by James Price <jrprice@google.com>
  - b0e445c0a103a80d530c802a223a395e8782146a [tint][IRToProgram] Create phony assignment if a value is... by Ben Clayton <bclayton@google.com>
  - 304e57a5b2863383ba037fb42bfd26162da8e37b Restore "[tint][fuzz] Enable AllowedFeatures::Everything()" by Ben Clayton <bclayton@google.com>
  - 83f6d0d2d3f6f1af440347fffd4f184c32ca6e47 [tint][hlsl] Don't ICE if the PixelLocal transform is mis... by Ben Clayton <bclayton@google.com>
  - a871f650869cecb5dadae4abb30fb28bc7ef5f76 [tint][ir] Correctly `enable chromium_internal_graphite;` by Ben Clayton <bclayton@google.com>
  - f7c7b93ba92915bd75805e67681dc6310d453b0d [tint][ir] Ensure all enumerators are serialized by Ben Clayton <bclayton@google.com>
  - ddd45561455cda0def30fcabf6748a89a44fd23c [tools][utils] Split BufferReader out to separate files by Ben Clayton <bclayton@google.com>
GitOrigin-RevId: 6488e26e6b3742a78e3918d8000a82e2d325c94c
Change-Id: I4b4c0b7c6d46e996f6ee675f665976346d713e39
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/185801
Reviewed-by: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: James Price <jrprice@google.com>

44 files changed

tree: f8833abd3f6e8a5b46ac664bc8285894c3bd8e90

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.