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dawn / dawn / 1abf3e953db9d4cab2fadc819e8c7ab5d5f33706
commit1abf3e953db9d4cab2fadc819e8c7ab5d5f33706[log] [tgz]
authorSaifuddin Hitawala <hitawala@chromium.org>Fri Jun 06 11:13:50 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Jun 06 11:13:50 2025 -0700
tree84fca89a065d9ced829a32a7011dfae498fb1e45
parent640c58bd2fe7e2554d2222f65a63319aa4efb2bc [diff]
[vulkan] Add lazy memory tracking for ResourceMemAllocatorVk

While investigating high GPU memory usage for Graphite/Dawn/Vulkan
we found that lazily allocated memory in both Ganesh/Vulkan
and Graphite/Dawn/Vulkan are being tracked as part of total and used
vulkan memory allocations. Since presumably Graphite has more memory
that is lazily allocated it is better to track this separately.

Hopefully these memory allocations never happen, like on tiling GPUs,
but if an allocation is needed then hopefully it will be transient and
only exists for the duration of the draw.

This change tracks lazy allocated memory for dawn/vulkan separately.
For this we update AllocatorMemoryInfo and AllocationInfo for reporting
and tracking in ResourceMemoryAllocatorVk.

Bug: chromium:407730048
Change-Id: Idda25b1bc0d66ac2ab40e7f6545327bf079cbac8
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/243655
Reviewed-by: Kyle Charbonneau <kylechar@google.com>
Commit-Queue: Saifuddin Hitawala <hitawala@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
9 files changed
tree: 84fca89a065d9ced829a32a7011dfae498fb1e45
  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-format-ignore
  20. .clang-tidy
  21. .git-blame-ignore-revs
  22. .gitattributes
  23. .gitignore
  24. .gitmodules
  25. .gn
  26. .style.yapf
  27. .vpython3
  28. AUTHORS
  29. BUILD.bazel
  30. BUILD.gn
  31. CMakeLists.txt
  32. CMakeSettings.json
  33. CODE_OF_CONDUCT.md
  34. codereview.settings
  35. CONTRIBUTING.md
  36. CPPLINT.cfg
  37. DEPS
  38. DIR_METADATA
  39. go.mod
  40. go.sum
  41. go_presubmit_support.py
  42. LICENSE
  43. OWNERS
  44. PRESUBMIT.py
  45. README.chromium
  46. README.md
  47. WATCHLISTS
  48. 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.