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dawn / dawn / refs/heads/chromium/7018
commit5c9047148c568393971db488badc8fe6f2b2f93a[log] [tgz]
authorPeter McNeeley <petermcneeley@google.com>Thu Feb 13 21:11:32 2025 -0800
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu Feb 13 21:11:32 2025 -0800
tree378cfad8538e2c80b5f8faa923989a605cc3befd
parent91f678d65e37be5903e7f8ccc4bca54ec8192de3 [diff]
Substitute overrides in IR (vk)

This moves the substitute overrides transform in IR ie. after the
program has been converted to IR.

Substitute replaces all overrides with constants and propagates these
values. This can result in the emission of pipeline creation errors
when these constants are validated.

Short circuiting expressions must be handled carefully to avoid
spurious pipeline errors. We convert these to ConstExprIfs and then
after evaluating overrides we throw away the branch not taken.

IR Overrides doc:
https://docs.google.com/document/d/1-6F1A6x3_8VX1iYqTPyIwxwO7bfI5SdEe1QEf2kqga8/edit?tab=t.0#heading=h.2pmdkrcrj8o3

Bug: 382300469
Change-Id: I0febae15e040bc25acb864cf2aee7215c124b2d6
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/223994
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Reviewed-by: James Price <jrprice@google.com>
24 files changed
tree: 378cfad8538e2c80b5f8faa923989a605cc3befd
  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.