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dawn / dawn / 363b24834ff62f4172a8f1b49e97a1a686a32602
commit363b24834ff62f4172a8f1b49e97a1a686a32602[log] [tgz]
authorSunny Sachanandani <sunnyps@chromium.org>Wed Jun 05 04:06:34 2024 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Jun 05 04:06:34 2024 +0000
tree9a93ac7a6b0ce6f680078ab5aa41a295bfdb757f
parentac92078b096b7dc1c4595984c534a3474359fc5e [diff]
d3d: Map Depth24PlusStencil8 to DXGI_FORMAT_D24_UNORM_S8_UINT

WebGPU spec says that 24 bit depth can be mapped to a depth 24 unorm
format[1]. When depth/stencil formats were initially implemented, all
platforms defaulted to using D32_FLOAT_S8X24_UINT formats presumably due
to their universal availability, but D3D has supported D24_UNORM_S8_UINT
format since feature level 10.0[2] which covers all clients which we
would like Dawn to support. Still put it behind a toggle since there's
a difference in behavior with respect to clamping of the compare ref
value when sampling from unorm vs float depth components with D3D.

[1] https://www.w3.org/TR/webgpu/#24-bit-depth
[2] https://learn.microsoft.com/en-us/windows/win32/direct3ddxgi/format-support-for-direct3d-feature-level-10-0-hardware#dxgi_format_d24_unorm_s8_uintfcs-45

Bug: 337980338, 341254292
Change-Id: I9a64de8afaffe820f24c61bf925445d3e23bc22e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/188640
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Sunny Sachanandani <sunnyps@chromium.org>
Auto-Submit: Sunny Sachanandani <sunnyps@chromium.org>
14 files changed
tree: 9a93ac7a6b0ce6f680078ab5aa41a295bfdb757f
  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. .gitattributes
  21. .gitignore
  22. .gitmodules
  23. .gn
  24. AUTHORS
  25. BUILD.bazel
  26. BUILD.gn
  27. CMakeLists.txt
  28. CMakeSettings.json
  29. CODE_OF_CONDUCT.md
  30. codereview.settings
  31. CONTRIBUTING.md
  32. CPPLINT.cfg
  33. DEPS
  34. DIR_METADATA
  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. 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.