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dawn / dawn / 6fd4844a609f35b839b679b3bf72a7c6b069d590
commit6fd4844a609f35b839b679b3bf72a7c6b069d590[log] [tgz]
authorKyle Charbonneau <kylechar@google.com>Mon Mar 17 11:56:20 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Mon Mar 17 11:56:20 2025 -0700
tree0ba1dfbdfe43289174b64301e118b7ea26fb1b01
parentd89ae7c3efad6a6f458ed885e7f7e8426ae427d8 [diff]
Make sure objects are deleted when idle

The Vulkan backend enqueues objects for deletion in FencedDeleter after
the pending command serial is completed. This works until idle and no
more work is submitted and the submitted/completed serial is never
incremented.

Have ReduceMemoryUsage() check if there any Vulkan objects pending
deletion. If there are then it will potentially submit and then tick.
If there was a vkQueueSubmit() the last submitted serial won't become
completed immediately, all work must finish on the GPU first, and
objects may still be pending deletion. Add a bool to ReduceMemoryUsage()
to signal to Chrome that there is more deletion work to be done in the
future and ReduceMemoryUsage() needs to be called again after a short
delay.

Bug: 398193014
Change-Id: I0207522ac501cbba18479f27a4113bd39598855b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/231174
Reviewed-by: Brandon Jones <bajones@chromium.org>
Commit-Queue: Kyle Charbonneau <kylechar@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
10 files changed
tree: 0ba1dfbdfe43289174b64301e118b7ea26fb1b01
  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.