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dawn / dawn / d28ff04c3e5f5e73159a86bc8d9712fe253261fd
commitd28ff04c3e5f5e73159a86bc8d9712fe253261fd[log] [tgz]
authorTarun Saini <sainitarun@google.com>Thu Oct 23 02:34:01 2025 -0700
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu Oct 23 02:34:01 2025 -0700
tree49656f506ea9e50a5ce76e9b5be173dd0c6cc6c6
parent604965a3e10631905cfb68560afba542765af0fe [diff]
Fix: WGPUBuffer getMappedRange with WGPU_WHOLE_MAP_SIZE

When calling `wgpuBufferGetMappedRange` with `WGPU_WHOLE_MAP_SIZE`, the size of the returned mapped range should be the size of the buffer minus the offset.

This commit fixes the issue by:
- Updating the generator to handle `WGPU_WHOLE_MAP_SIZE` for `WGPUBuffer` in `methods.cpp`.
- Adding new tests in `BufferTest.kt` to verify the behavior of `getMappedRange` and `getConstMappedRange` with default and explicit offset/size values, including when `WGPU_WHOLE_MAP_SIZE` is used.

Bug: b/450476328
Change-Id: I8c2f78474cde441ca3bcaf8185f134b1fb4425cb
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/267134
Reviewed-by: Jim Blackler <jimblackler@google.com>
Commit-Queue: Tarun Saini <sainitarun@google.com>
2 files changed
tree: 49656f506ea9e50a5ce76e9b5be173dd0c6cc6c6
  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. unsafe_buffers_paths.txt
  48. WATCHLISTS
  49. 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.