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CMake-only fork of https://dawn.googlesource.com/dawn with cleaned, vendored dependencies
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Jiawei Shao b097b3100b Vulkan: workaround texture-to-texture copy issue with compressed formats 
This patch adds the workaround for the Vulkan SPEC issue in the T2T
copies with compressed formats when the parameter "extent" fitting in
one subresource but not fitting in another. You can get the detail of
the issue through the following link:
https://github.com/KhronosGroup/Vulkan-Docs/issues/1005

This patch implements the workaround for this issue by splitting the
affected T2T copy into a T2B and a B2T copy with an internal buffer.

BUG=dawn:42
TEST=dawn_end2end_tests

Change-Id: I29c48da0b5ff85f9860839a82733e8c1c43acfc6
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/10020
Reviewed-by: Austin Eng <enga@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
 		2019-08-27 00:07:09 +00:00
build_overrides Tell shaderc where to find SPIRV-Cross. 2018-12-14 20:33:50 +00:00
docs Add .gitattributes to normalize EOL 2019-07-15 12:23:18 +00:00
examples Fix dynamic bind group size in Animometer example 2019-08-05 18:30:11 +00:00
generator Implement new defaults for Texture::CreateView 2019-08-26 22:51:19 +00:00
infra/config [infra/config] Bump OS X SDK version for dawn. 2019-08-09 01:19:04 +00:00
scripts Update BUILD flags to support Chrome OS 2019-08-13 22:45:14 +00:00
src Vulkan: workaround texture-to-texture copy issue with compressed formats 2019-08-27 00:07:09 +00:00
third_party Update BUILD flags to support Chrome OS 2019-08-13 22:45:14 +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 Update .gitignore 2019-08-21 14:13:33 +00:00
.gn PRESUBMIT.py: Add formatting checks. 2018-09-11 08:06:36 -04:00
AUTHORS Rename NXT -> Dawn in the comments 2018-07-18 22:54:06 +02:00
BUILD.gn OpenGL: Support B2T and T2T copies with BC formats 2019-08-22 08:19:13 +00:00
CONTRIBUTING.md Remove references to Github in README and CONTRIBUTING 2018-10-08 13:51:18 +00:00
DEPS Rolling 3 dependencies 2019-08-20 21:04:31 +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 README.md: Add a link to the mailing list. 2018-12-12 16:14:53 +00:00
codereview.settings Initial CQ configuration 2018-08-23 08:33:35 -04:00
dawn.json Implement new defaults for Texture::CreateView 2019-08-26 22:51:19 +00:00
dawn_wire.json Add MemoryTransfer interfaces to the wire 2019-07-19 16:01:48 +00:00

README.md

Dawn, a WebGPU implementation

Dawn (formerly NXT) is an open-source and cross-platform implementation of the work-in-progress WebGPU standard. It exposes a C/C++ API that maps almost one-to-one to the WebGPU IDL and can be managed as part of a larger system such as a Web browser.

Dawn provides several WebGPU building blocks:

  • WebGPU C/C++ headers that applications and other building blocks use.
  • A "native" implementation of WebGPU using platforms' GPU APIs:
    • D3D12 on Windows 10
    • Metal on OSX (and eventually iOS)
    • Vulkan on Windows, Linux (eventually ChromeOS and Android too)
    • OpenGL as best effort where available
  • A client-server implementation of WebGPU for applications that are in a sandbox without access to native drivers

Directory structure

  • dawn.json: description of the API used to drive code generators.
  • examples: examples showing how Dawn is used.
  • generator: code generator for files produces from dawn.json
    • templates: Jinja2 templates for the generator
  • scripts: scripts to support things like continuous testing, build files, etc.
  • src:
    • common: helper code shared between core Dawn libraries and tests/samples
    • dawn_native: native implementation of WebGPU, one subfolder per backend
    • dawn_wire: client-server implementation of WebGPU
    • include: public headers for Dawn
    • tests: internal Dawn tests
      • end2end: WebGPU tests performing GPU operations
      • unittests: unittests and by extension tests not using the GPU
        • validation: WebGPU validation tests not using the GPU (frontend tests)
    • utils: helper code to use Dawn used by tests and samples
  • third_party: directory where dependencies live as well as their buildfiles.

Building Dawn

Dawn uses the Chromium build system and dependency management so you need to install depot_tools and add it to the PATH.

On Linux you need to have the pkg-config command:

# Install pkg-config on Ubuntu
sudo apt-get install pkg-config

Then get the source as follows:

# Clone the repo as "dawn"
git clone https://dawn.googlesource.com/dawn dawn && cd dawn

# Bootstrap the gclient configuration
cp scripts/standalone.gclient .gclient

# Fetch external dependencies and toolchains with gclient
gclient sync

Then generate build files using gn args out/Debug or gn args out/Release. A text editor will appear asking build options, the most common option is is_debug=true/false; otherwise gn args out/Release --list shows all the possible options.

Then use ninja -C out/Release to build dawn and for example ./out/Release/dawn_end2end_tests to run the tests.

Contributing

Please read and follow CONTRIBUTING.md. Dawn doesn't have a formal coding style yet, except what's defined by our clang format style. Overall try to use the same style and convention as code around your change.

If you find issues with Dawn, please feel free to report them on the bug tracker. For other discussions, please post to Dawn's mailing list.

License

Please see LICENSE.

Disclaimer

This is not an officially supported Google product.