infra: Stop statically enforcing Xcode version.

The OSX machines in "luci.flex.try" pool that run Dawn tryjobs
have been upgraded from OSX 10.14 to OSX 10.15. Per [1],
the preferred Xcode version on OSX 10.15 is '12a7209' and most
tryjobs (from other projects) install that version. But when
a Dawn tryjob runs, it rolls Xcode back to '11b52'. Reinstalling Xcode
back and forth like that takes time (~20 min), it caused some tryjobs
in the "infra" project to timeout.

Unhardcode Xcode version in Dawn configs. It should allow the recipe
to pick the "best" version ('12a7209' in this case).

[1]: https://source.chromium.org/chromium/chromium/tools/depot_tools/+/master:recipes/recipe_modules/osx_sdk/api.py;l=21?q=11b52&ss=chromium

R=cwallez@chromium.org, tandrii@chromium.org

Change-Id: I8499a763679b9e9270854bf66c2a21f1e6354594
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/29440
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
1 file changed
tree: e572a0596e78feab49d5402cc7fc5a8fece8a4c6
  1. build_overrides/
  2. docs/
  3. examples/
  4. generator/
  5. infra/
  6. scripts/
  7. src/
  8. third_party/
  9. tools/
  10. .clang-format
  11. .gitattributes
  12. .gitignore
  13. .gn
  14. AUTHORS
  15. BUILD.gn
  16. CMakeLists.txt
  17. codereview.settings
  18. CONTRIBUTING.md
  19. dawn.json
  20. dawn_wire.json
  21. DEPS
  22. LICENSE
  23. OWNERS
  24. PRESUBMIT.py
  25. README.chromium
  26. README.md
README.md

Dawn, a WebGPU implementation

Dawn is an open-source and cross-platform implementation of the work-in-progress 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 on Windows 10
    • Metal on macOS and iOS
    • Vulkan on Windows, Linux, ChromeOS, Android and Fuchsia
    • OpenGL as best effort where available
  • A client-server implementation of WebGPU for applications that are in a sandbox without access to native drivers

Helpful links:

Documentation table of content

Developer documentation:

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

Status

(TODO)

License

Apache 2.0 Public License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.