dan sinclair 6c34e11e43 Support float values where the zeros change the exponent
When underflow is detected in float parsing, WGSL returns `0.0`.
Currently, if the number of `0`s following a `.` shifts the exponent
from a positive to a negative we were not correctly identify the
underflow and returning 0. This CL updates the float parsing to detect
undeflow in this case and return `0.0` as expected.

Bug: tint:1863
Change-Id: I164063cebf70f825fdf2753dff8a4f016939c38e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/124341
Commit-Queue: David Neto <dneto@google.com>
Reviewed-by: David Neto <dneto@google.com>
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
2023-03-17 15:08:06 +00:00
2023-03-16 14:31:25 +00:00
2023-02-05 10:52:57 +00:00
2022-05-30 18:00:58 +00:00
2022-06-18 16:16:11 +00:00
2020-03-02 15:47:43 -05:00
2022-04-10 22:14:00 +00:00
2022-12-19 19:06:51 +00:00
2023-03-14 14:42:18 +00:00
2023-03-14 14:42:18 +00:00
2021-12-02 21:25:58 +00:00

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, 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:

Documentation table of content

Developer documentation:

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.

Description
CMake-only fork of https://dawn.googlesource.com/dawn with cleaned, vendored dependencies
Readme Multiple Licenses 145 MiB
Languages
C++ 59.9%
HLSL 18.2%
GLSL 17.3%
Go 2.1%
Objective-C++ 0.8%
Other 1.6%