Revert "Turn on WGSL support by default in Dawn"

This reverts commit e1d976ed9123ccbe8a9fa31ffb90c2b19fc53eb7.

Reason for revert: crbug.com/tint/123

Original change's description:
> Turn on WGSL support by default in Dawn
> 
> Tint is available in Chromium now, so we can turn this on. For situations were
> WGSL support is not needed it can still be turned off via args.gn.
> 
> Roll third_party/tint/ 16890b9ce..13904a612 (15 commits)
> 
> https://dawn.googlesource.com/tint/+log/16890b9ce8b7..5f43fedcd
> 
> $ git log 16890b9ce..5f43fedcd --date=short --no-merges --format='%ad %ae %s'
> 2020-07-16 rharrison Clean up how deps are defined in BUILD.gn
> 2020-07-16 dsinclair Remove refs.cfg.
> 2020-07-16 dsinclair Fixup group list name
> 2020-07-16 dsinclair [msl-writer] Emitting of program constants.
> 2020-07-16 dsinclair [msl-writer] Fixup matrix and array constructors.
> 2020-07-16 dsinclair Differentiate size and stride in array type name.
> 2020-07-16 dneto [spirv-reader] Support duplicate type definitions
> 2020-07-15 dsinclair [msl-writer] Add struct offset support.
> 2020-07-15 dsinclair [msl-writer] Add builtin support
> 2020-07-15 dsinclair Add helpers for referenced variables.
> 2020-07-15 dsinclair [msl-writer] Refactor some entry point variable code.
> 2020-07-15 dsinclair [msl-writer] Generate entry point functions.
> 2020-07-14 dsinclair [msl-writer] Handle emitting user function calls.
> 2020-07-14 dsinclair Inherit refererenced globals up the call stack.
> 2020-07-14 dsinclair [msl-writer] Generate input/output structs
> 
> Created with:
>   roll-dep third_party/tint
> 
> Change-Id: Ia437e8dc309b06a64ddd4d91ec3af1499af13553
> Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/24920
> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
> Reviewed-by: dan sinclair <dsinclair@chromium.org>
> Reviewed-by: Ryan Harrison <rharrison@chromium.org>

TBR=cwallez@chromium.org,kainino@chromium.org,enga@chromium.org,dneto@google.com,rharrison@chromium.org,dsinclair@chromium.org

Change-Id: I21513d5b5d461eccd42aa650fa4b46e85daf642f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/25480
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
2 files changed
tree: 4f7be4b71d4e044605c80ac0850a0e4ed6781650
  1. build_overrides/
  2. docs/
  3. examples/
  4. generator/
  5. infra/
  6. scripts/
  7. src/
  8. third_party/
  9. tools/
  10. .clang-format
  11. .gitattributes
  12. .gitignore
  13. .gn
  14. AUTHORS
  15. BUILD.gn
  16. CMakeLists.txt
  17. codereview.settings
  18. CONTRIBUTING.md
  19. dawn.json
  20. dawn_wire.json
  21. DEPS
  22. LICENSE
  23. OWNERS
  24. PRESUBMIT.py
  25. README.chromium
  26. README.md
README.md

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 webgpu.h docs)

Status

(TODO)

License

Apache 2.0 Public License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.