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dawn / dawn / dec0c62997bc037bc6a88be39a6939d5a479bf1b
commitdec0c62997bc037bc6a88be39a6939d5a479bf1b[log] [tgz]
authorAntonio Maiorano <amaiorano@google.com>Fri Feb 24 20:59:08 2023 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Feb 24 20:59:08 2023 +0000
tree6a24f8cf2ff7e4b9e07be70243cdea9fc413b334
parent66d487395d293c983bde13e14709df6eb2bb01e4 [diff]
tint: optimize SymbolTable::New

Avoid linearly searching for prefix_i. This becomes very slow when
adding the same prefix many times. Instead, cache each prefix and the
last index that was assigned, and start searching from there.

Note that this locally speeds up MaxLimitTests.MaxBufferBindingSize on
GL backends from about 10 minutes to a few seconds. This test creates a
very large struct, and Tint's GLES backend runs the PadStructs
transform, which produces a struct with 16384 members. Creating these
members triggers the behaviour described above when creating names for
each member.

Also replaced std::unordered_maps with utils::Hashmap.

Change-Id: I86678a049ac229ce617d500971e9c077ff5c10a1
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/121440
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
2 files changed
tree: 6a24f8cf2ff7e4b9e07be70243cdea9fc413b334
  1. .vscode/
  2. build_overrides/
  3. docs/
  4. generator/
  5. include/
  6. infra/
  7. scripts/
  8. src/
  9. test/
  10. third_party/
  11. tools/
  12. webgpu-cts/
  13. .clang-format
  14. .clang-tidy
  15. .gitattributes
  16. .gitignore
  17. .gn
  18. AUTHORS
  19. BUILD.gn
  20. CMakeLists.txt
  21. CMakeSettings.json
  22. CODE_OF_CONDUCT.md
  23. codereview.settings
  24. CONTRIBUTING.md
  25. CPPLINT.cfg
  26. dawn.json
  27. dawn_wire.json
  28. DEPS
  29. DIR_METADATA
  30. Doxyfile
  31. go.mod
  32. go.sum
  33. go_presubmit_support.py
  34. LICENSE
  35. OWNERS
  36. PRESUBMIT.py
  37. README.chromium
  38. README.md
  39. tint_overrides_with_defaults.gni
README.md

Dawn's logo: a sun rising behind a stylized mountain inspired by the WebGPU logo. The text Dawn is written below it.

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, 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)

Status

(TODO)

License

Apache 2.0 Public License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.