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dawn / dawn / 96018e5f5ea95f0cf64ad283fc8ca273d72cd963
commit96018e5f5ea95f0cf64ad283fc8ca273d72cd963[log] [tgz]
authorDavid Neto <dneto@google.com>Sat Aug 12 04:16:37 2023 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Sat Aug 12 04:16:37 2023 +0000
treedfc20168ed260a1a19f16c3c130ef0a346d9e86e
parent9fd13c43064406d615b01442d4b2e951466f0c20 [diff]
consteval: -0.0 equals 0.0

That's what IEEE 754 requires, and WGSL does not overrule or relax that.

Various tests are updated:
- Don't expect that -0.0 is not equal to 0.0
- A floating point narrowing conversion is not required to preserve
  the sign bit on -0.0
- Avoid atan2 cases that have unbounded error, particularly around +/- 0.0

Suppress VertexFormatTests for Arm Android devices when -0.0 is used.
There are similar suppressed failures on Qualcomm Android devices.

Bug: dawn:1566
Fixed: tint:2001
Change-Id: Idc6c92473a798add3f2fe3f5478e91323dd76474
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/144383
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: David Neto <dneto@google.com>
11 files changed
tree: dfc20168ed260a1a19f16c3c130ef0a346d9e86e
  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. build
  14. buildtools
  15. testing
  16. .clang-format
  17. .clang-tidy
  18. .gitattributes
  19. .gitignore
  20. .gitmodules
  21. .gn
  22. AUTHORS
  23. BUILD.gn
  24. CMakeLists.txt
  25. CMakeSettings.json
  26. CODE_OF_CONDUCT.md
  27. codereview.settings
  28. CONTRIBUTING.md
  29. CPPLINT.cfg
  30. dawn.json
  31. dawn_wire.json
  32. DEPS
  33. DIR_METADATA
  34. Doxyfile
  35. go.mod
  36. go.sum
  37. go_presubmit_support.py
  38. LICENSE
  39. OWNERS
  40. PRESUBMIT.py
  41. README.chromium
  42. README.md
  43. 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.