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20a6ca0041
The generator_lib.py processing of file renders would check that the output directory doesn't exist and if needed, would create it. However by default makedirs errors if the path already exists. This caused issues when multiple generator_lib.py generators with the same output dir would run in parallel in builds, because there can be a race where: - GeneratorA: Check os.path.exists -> returns False - GeneratorB: Check os.path.exists -> returns False - GeneratorB: os.makedirs -> Ok - GeneratorA: os.makedirs -> Exception, fails the build. Instead use os.makedirs(exist_ok=True) inconditionally to remove this racy behavior. Bug: None Change-Id: I5cb401a1df11a3640faeea94c15cb54236edc05a Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/114521 Commit-Queue: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Ben Clayton <bclayton@google.com> Kokoro: Kokoro <noreply+kokoro@google.com>
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.hversion that Dawn implements. - A C++ wrapper for the
webgpu.h.
- The
- 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:
- Dawn bug tracker if you find issues with Dawn.
- Tint bug tracker if you find issues with Tint.
- Dawn's mailing list for other discussions related to Dawn.
- Dawn's source code
- Dawn's Matrix chatroom for live discussion around contributing or using Dawn.
- WebGPU's Matrix chatroom
- Tint mirror for standalone usage.
Documentation table of content
Developer documentation:
- Dawn overview
- Building
- Contributing
- Code of Conduct
- Testing Dawn
- Debugging Dawn
- Dawn's infrastructure
- Dawn errors
- Tint experimental extensions
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.