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If an error message was reported from Tint that had a end line/position that occurred before the start line/position then the range would have a negative length, causing the unsigned length to underflow into a very large value. Also, specifically, if the start line was non-zero but the end line was zero (indicating no line, and the value ranges are constructed with by default) the for loop that adds the line offsets would underflow and cause it to read off the end of the line list. Clamping the end of the range to always be less than or equal to the start of the range avoids both of these problems. Bug: dawn:1245 Change-Id: I780a1f5acc228297cbbea86f33679d00e9153b4c Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/75260 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Auto-Submit: Brandon Jones <bajones@chromium.org> Reviewed-by: Austin Eng <enga@chromium.org> Commit-Queue: Austin Eng <enga@chromium.org>
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 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:
- Dawn's bug tracker if you find issues with Dawn.
- 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
Documentation table of content
Developer documentation:
- Dawn overview
- Building Dawn
- Contributing to Dawn
- Testing Dawn
- Debugging Dawn
- Dawn's infrastructure
- Dawn errors
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.