Revert "Reland "Populate some D3D12 limits from the backend""

This reverts commit 167d299916e3399765e62e52e3a28cacf2696b45.

Reason for revert: Still failing the roll because of OOM on x86.

Original change's description:
> Reland "Populate some D3D12 limits from the backend"
> This is a reland of aa8fcfc64b10c5961441bf63da08cd54343bd415
> It changes MaxLimitTests to use at most a 512MB buffer on 32-bit
> platforms.
> Original change's description:
> > Populate some D3D12 limits from the backend
> >
> > Also bumps the required D3D feature level to 11.1
> >
> > Bug: dawn:685
> > Change-Id: I40bc3a162e0aee596d61118ba0dfe0bf9cb60d93
> > Reviewed-on:
> > Commit-Queue: Austin Eng <>
> > Reviewed-by: Rafael Cintron <>
> > Reviewed-by: Corentin Wallez <>
> Bug: dawn:685
> Change-Id: I2e1df5f7ac0c9bbb6476ca2e1964a9af4afd89b6
> Reviewed-on:
> Reviewed-by: Corentin Wallez <>
> Reviewed-by: Rafael Cintron <>
> Commit-Queue: Austin Eng <>,,,

Change-Id: Ibad5ac7f28015da6a7334ba074aa975198591318
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: dawn:685
Reviewed-by: Austin Eng <>
Commit-Queue: Austin Eng <>
2 files changed
tree: 15e21fa0cc2180daaab87d6b8e6bac5b27fd3bde
  1. .vscode/
  2. build_overrides/
  3. docs/
  4. examples/
  5. generator/
  6. infra/
  7. scripts/
  8. src/
  9. third_party/
  10. tools/
  11. .clang-format
  12. .gitattributes
  13. .gitignore
  14. .gn
  17. CMakeLists.txt
  18. codereview.settings
  19. dawn.json
  20. dawn_wire.json
  21. DEPS
  24. OWNERS
  26. README.chromium

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 on Windows 10
    • Metal on macOS and iOS
    • Vulkan on Windows, Linux, ChromeOS, Android and Fuchsia
    • OpenGL as best effort where available
  • A client-server implementation of WebGPU for applications that are in a sandbox without access to native drivers

Helpful links:

Documentation table of content

Developer documentation:

User documentation: (TODO, figure out what overlaps with the webgpu.h docs)




Apache 2.0 Public License, please see LICENSE.


This is not an officially supported Google product.