Corentin Wallez 48183b8f58 Vulkan: honor bufferImageGranularity the simplest way.
Vulkan requires that linear and opaque resources be placed in different
"pages" of bufferImageGranularity size, as some hardware uses the page
table to contain some compression bits or other stuff. Make Dawn honor
this limit by aligning all allocations to bufferImageGranularity. This
is pretty bad and should be improved later.

Also does some cleanups:
 - Add kMappableBufferUsage to represent all mappable usages.
 - Remove the proxy function for resource management from
   vulkan::Device and call ResourceMemoryAllocator directly.
 - Use an enum to make the difference between mappable, linear and
   opaque resources.

This issue was found while doing a change of the memory type selection
in Vulkan, that started failing some unrelated tests on Nvidia. Without
knowing the details of the HW or the driver it is really hard to write
tests, except by copy-pasting a failing test. This is why there is no
test added in this CL, and instead will rely on tests not failing with
the follow-up CL.

Bug: dawn:659

Change-Id: Ib7c1f3f1949457e04ca8e23d212dc60af7046213
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/52920
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
2021-06-22 13:41:35 +00:00
2017-11-28 16:18:39 -05:00
2018-07-18 22:54:06 +02:00
2021-02-02 17:03:30 +00:00
2021-04-21 18:05:01 +00:00

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)

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
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