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dawn / dawn / 9c2902b7e152991223e440481831b9713032086c
commit9c2902b7e152991223e440481831b9713032086c[log] [tgz]
authorKai Ninomiya <kainino@chromium.org>Mon Mar 03 15:35:22 2025 -0800
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Mon Mar 03 15:35:22 2025 -0800
tree76e964793d55748f7a81942efacb86313523ab5c
parent86f0683126169002afabfaefe56f81af8c52bf42 [diff]
[emscripten] Add emsdk to DEPS for Wasm builds

This can be used (manually) to build with CMake.
It is also planned to be used (automatically) with gn.

activate-emsdk comes from here, but modifications and new code:
https://source.chromium.org/chromium/chromium/src/+/main:third_party/skia/bin/activate-emsdk

Split out from Loko's original CL, with a few updates.
https://dawn-review.googlesource.com/c/dawn/+/227136

Building with .emscripten.emsdk_original works on both Mac and Windows.
Building with the overridden .emscripten has the following caveats:
- CMake on Mac doesn't work because llvm-build is missing llvm-ranlib
  (which is supposed to be a symlink to llvm-ar, but it must be invoked
  with the correct executable name; adding a symlink makes it work).
- CMake (and probably gn) on Win doesn't work because llvm-build is
  missing clang.exe (though this can be fixed by copying clang-cl.exe),
  llvm-ar.exe, and presumably others.
- CMake (and possibly gn) on Win only works with a native Ninja install
  (ninja.exe), not depot_tools (ninja.bat).

Bug: 371024051
Co-authored-by: Lokbondo Kung <lokokung@google.com>
Change-Id: I901cc814835e182f95ce73927cf151bc1ab7b07f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/228554
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: dan sinclair <dsinclair@chromium.org>
7 files changed
tree: 76e964793d55748f7a81942efacb86313523ab5c
  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. .git-blame-ignore-revs
  21. .gitattributes
  22. .gitignore
  23. .gitmodules
  24. .gn
  25. AUTHORS
  26. BUILD.bazel
  27. BUILD.gn
  28. CMakeLists.txt
  29. CMakeSettings.json
  30. CODE_OF_CONDUCT.md
  31. codereview.settings
  32. CONTRIBUTING.md
  33. CPPLINT.cfg
  34. DEPS
  35. DIR_METADATA
  36. go.mod
  37. go.sum
  38. go_presubmit_support.py
  39. LICENSE
  40. OWNERS
  41. PRESUBMIT.py
  42. README.chromium
  43. README.md
  44. WATCHLISTS
  45. 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.