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CMake-only fork of https://dawn.googlesource.com/dawn with cleaned, vendored dependencies
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Corentin Wallez 36f0388f79 Revert "Vulkan: Enforce fixed subgroup size for compute shaders." 
This reverts commit 56f1678437.

Reason for revert: crbug.com/1059205
Bug: chromium:1059205

Original change's description:
> Vulkan: Enforce fixed subgroup size for compute shaders.
>
> This CL ensures that, on architectures with a varying subgroup size,
> compute shaders are always compiled with a fixed subgroup size to
> avoid consistency issues when one shader writes data in a subgroup-size
> dependent layout to GPU memory, to be read by another shader in a
> future dispatch.
>
> At the moment, only Intel ICDs are known to implement this [1],
> and the code uses a heuristics to chose the size of 16, which seems to
> be the sweet spot according to Intel engineers.
>
> + Update the PNextChainBuilder class to deal with the fact that
>   VkComputePipelineCreateInfo::pNext is defined as a const void*,
>   which created compiler errors in the previous implementation.
>
> [1] https://bugs.freedesktop.org/show_bug.cgi?id=108875
>
> Change-Id: I332faa53b9f854a8abe43a7271f30d8c5deb2142
> Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/16021
> Commit-Queue: Corentin Wallez <cwallez@chromium.org>
> Reviewed-by: Corentin Wallez <cwallez@chromium.org>

TBR=cwallez@google.com,cwallez@chromium.org,enga@chromium.org,enga@google.com,david.turner.dev@gmail.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Change-Id: I922eccc310505da4b4a9fc853335733ca4900fc8
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/16521
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
 		2020-03-06 13:03:00 +00:00
build_overrides GN: Use the hermetic XCode if available. 2020-03-06 12:25:20 +00:00
docs [docs] Add documentation for Dawn's testing infrastructure 2020-01-31 03:28:56 +00:00
examples Default initialize all descriptors 2020-02-28 22:29:15 +00:00
generator Fix compilation with stdlibc++ (instead of libc++) 2020-02-18 02:44:05 +00:00
infra/config infra: Use macOS 10.15 and newer OSX SDK. 2020-02-25 17:12:27 +00:00
scripts Fix Vulkan fuzzer on mac_libfuzzer_chrome_asan 2020-01-25 02:14:39 +00:00
src Revert "Vulkan: Enforce fixed subgroup size for compute shaders." 2020-03-06 13:03:00 +00:00
third_party Roll Dawn's copy of the Vulkan headers. 2020-03-04 12:23:54 +00:00
.clang-format Add .clang-format 2017-11-28 16:18:39 -05:00
.gitattributes Add .gitattributes to normalize EOL 2019-07-15 12:23:18 +00:00
.gitignore Allow using swiftshader with the Vulkan backend 2019-11-26 18:21:51 +00:00
.gn Re-enable -Wunguarded-availability in Dawn standalone builds 2019-12-11 16:54:51 +00:00
AUTHORS Rename NXT -> Dawn in the comments 2018-07-18 22:54:06 +02:00
BUILD.gn Residency 1: Add Chromium's LinkedList to /common/ 2020-03-05 09:54:06 +00:00
CMakeLists.txt CMake: Add support for the D3D12 backend 2020-02-24 13:27:28 +00:00
CONTRIBUTING.md docs: write an overview of Dawn and split README.md 2019-12-05 11:01:41 +00:00
DEPS Rolling 4 dependencies 2020-03-02 19:12:46 +00:00
LICENSE Initial commit of all the NXT integration. 2017-04-20 14:38:20 -04:00
OWNERS Add component to OWNERS and fixup repo URL in README.chromium 2018-09-25 20:53:37 +00:00
PRESUBMIT.py PRESUBMIT.py: Add formatting checks. 2018-09-11 08:06:36 -04:00
README.chromium Add component to OWNERS and fixup repo URL in README.chromium 2018-09-25 20:53:37 +00:00
README.md docs: write an overview of Dawn and split README.md 2019-12-05 11:01:41 +00:00
codereview.settings Initial CQ configuration 2018-08-23 08:33:35 -04:00
dawn.json Fix examples running with the wire. 2020-02-03 08:56:04 +00:00
dawn_wire.json Introduce wgpu::Surface and implement it for HWND, X11 and Metal 2020-01-15 13:14:12 +00:00

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.