Google Git
Sign in
dawn / dawn / 055af5b4a05176803daf4391d673eb966174fe62
commit055af5b4a05176803daf4391d673eb966174fe62[log] [tgz]
authorAntonio Maiorano <amaiorano@google.com>Fri Mar 08 12:32:50 2024 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Mar 08 12:32:50 2024 +0000
treee9daf5e4d4923e2524757c4d35525eb9d1a462ca
parentd2e17817f13512450d2a7953a165f0fe470d2bed [diff]
tint: fix compile error on macos wrt operator<<

Building tint_unittests on macos with AppleClang failed with, for example:

error: invalid operands to binary expression ('std::__1::basic_ostream<char>' and 'const tint::core::ir::Usage')
        return out << key.Value();

This was caused by hashmap_base.h's operator<< erroneously detecting that the
stream object << rhs was available when using
traits::HasOperatorShiftLeft<STREAM, T>. The problem was that the expression
"std::declval<LHS> << std::declval<RHS>" was being used to test if the
expression is valid; however, std::declval returns an r-value reference, so this
was testing "r-value lhs << r-value rhs", and for stream objects, the lhs needs
to be an l-value (typically accepts const& and &). So we fix this by making it
"std::declval<LHS&>" to ensure it always evaluates to an lvalue.

Change-Id: Id722a87204cf998a21130f17b9d3377c487cb890
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/178264
Kokoro: Kokoro <noreply+kokoro@google.com>
Auto-Submit: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
1 file changed
tree: e9daf5e4d4923e2524757c4d35525eb9d1a462ca
  1. .github/
  2. .vscode/
  3. build_overrides/
  4. docs/
  5. generator/
  6. include/
  7. infra/
  8. scripts/
  9. src/
  10. test/
  11. third_party/
  12. tools/
  13. webgpu-cts/
  14. build
  15. buildtools
  16. testing
  17. .bazelrc
  18. .clang-format
  19. .clang-tidy
  20. .gitattributes
  21. .gitignore
  22. .gitmodules
  23. .gn
  24. AUTHORS
  25. BUILD.bazel
  26. BUILD.gn
  27. CMakeLists.txt
  28. CMakeSettings.json
  29. CODE_OF_CONDUCT.md
  30. codereview.settings
  31. CONTRIBUTING.md
  32. CPPLINT.cfg
  33. DEPS
  34. DIR_METADATA
  35. go.mod
  36. go.sum
  37. go_presubmit_support.py
  38. LICENSE
  39. OWNERS
  40. PRESUBMIT.py
  41. README.chromium
  42. README.md
  43. WORKSPACE.bazel
README.md

Build Status Matrix Space

Dawn, a WebGPU implementation

Dawn is an open-source and cross-platform implementation of the WebGPU standard. More precisely it implements webgpu.h that is a one-to-one mapping with the WebGPU IDL. Dawn is meant to be integrated as part of a larger system and is the underlying implementation of WebGPU in Chromium.

Dawn provides several WebGPU building blocks:

  • WebGPU C/C++ headers that applications and other building blocks use.
    • The webgpu.h version that Dawn implements.
    • A C++ wrapper for the webgpu.h.
  • A “native” implementation of WebGPU using platforms' GPU APIs: D3D12, Metal, Vulkan and OpenGL. See per API support for more details.
  • A client-server implementation of WebGPU for applications that are in a sandbox without access to native drivers
  • Tint is a compiler for the WebGPU Shader Language (WGSL) that can be used in standalone to convert shaders from and to WGSL.

Helpful links:

Documentation table of content

Developer documentation:

User documentation: (TODO, figure out what overlaps with the webgpu.h docs)

License

BSD 3-Clause License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.