commit | 15d4c2e63b7281d622eba063c615be73358af260 | [log] [tgz] |
---|---|---|
author | Jiawei Shao <jiawei.shao@intel.com> | Fri Apr 26 07:52:57 2019 +0000 |
committer | Commit Bot service account <commit-bot@chromium.org> | Fri Apr 26 07:52:57 2019 +0000 |
tree | edfaa374e75ad36b35329abbe027d510f057723a | |
parent | 8e97b4c8a5126a36ff03b7f6581b45b6d322a331 [diff] |
Emulate store and multisample resolve on Metal This patch implements "store and MSAA resolve" store operation on Metal drivers that don't support MTLStoreActionStoreAndMultisampleResolve with a workaround that does MSAA resolve in another render pass. Driver workaround is one type of Dawn Toggles. Dawn Toggles will include other optional optimizations and features that can be configured to use or not when we create Dawn Devices. As all Metal try bots don't need this toggle, to better test this patch on the try bots: 1. We add the support of forcing enabling a workaround when starting an Dawn end2end test so that we can test the workaround on the platforms where the workaround is disabled. 2. We add an optional parameter DeviceDescriptor to CreateDevice() so that we can custom the toggles the Dawn device should use. This patch also adds the support of querying toggle details from Instance and the names of the toggles in use from Device. These APIs are tested in the Dawn unittests added in this patch. BUG=dawn:56 TEST=dawn_end2end_tests TEST=dawn_unittests Change-Id: Iae31d2ded6057eee638b6099d3061e9d78b04d55 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/6620 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Austin Eng <enga@chromium.org> Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
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:
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 generatorscripts
: scripts to support things like continuous testing, build files, etc.src
:common
: helper code shared between core Dawn libraries and tests/samplesdawn_native
: native implementation of WebGPU, one subfolder per backenddawn_wire
: client-server implementation of WebGPUinclude
: public headers for Dawntests
: internal Dawn testsend2end
: WebGPU tests performing GPU operationsunittests
: unittests and by extension tests not using the GPUvalidation
: WebGPU validation tests not using the GPU (frontend tests)utils
: helper code to use Dawn used by tests and samplesthird_party
: directory where dependencies live as well as their buildfiles.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.
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.
Please see LICENSE.
This is not an officially supported Google product.