Further fixes to build with with VS2019 (end2end tests)

These fix the tests so that the entire of Dawn can now be built with
VS2019. Some details:

Multiples of "error C3493: 'X' cannot be implicitly captured because no
default capture mode has been specified" in BufferTests.cpp. This
appears to be a bug in VS whereby the constexprs need capturing; the
workaround, rather than explicitly name them and change the function
signature, is to make the vars also static.

In DepthStencilSamplingTests.cpp we get "warning C4310: cast truncates
constant value" for uint8_t(256). Rather than try to silence the
warning the test was removed, since the cast will *always* result in
zero, which is also the first in the test values.

To successfully build two further third-party dependencies also require


Note: whilst this now builds the entire of Dawn with VS not yet all of
the build arguments are supported. Yet to investigate is turning on
optimisations (with is_official_build=true) which attempts to combine
"/INCREMENTAL" with "/OPT:REF" and fails (to be addressed next).

Bug: dawn:602
Change-Id: I37202992f16b999d5627022eeeb6b9fff0d4b60b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/37701
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Carl Woffenden <cwoffenden@gmail.com>
2 files changed
tree: 2fe78233a8bbbd6072aeebea448230dbcb57203f
  1. .clang-format
  2. .gitattributes
  3. .gitignore
  4. .gn
  6. BUILD.gn
  7. CMakeLists.txt
  9. DEPS
  11. OWNERS
  12. PRESUBMIT.py
  13. README.chromium
  14. README.md
  15. build_overrides/
  16. codereview.settings
  17. dawn.json
  18. dawn_wire.json
  19. docs/
  20. examples/
  21. generator/
  22. infra/
  23. scripts/
  24. src/
  25. third_party/
  26. tools/

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.