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This change adds a end2end test for readonly depth/stencil
attachment and implements it on D3D12.
This change focuses on depth. If it is OK, I will add test(s) for
stencil.
The key points are:
- Set DEPTH_READ transition barrier to replace DEPTH_WRITE barrier
if it is readonly depth/stencil attachment.
- Set appropriate D3D12_DEPTH_STENCIL_DESC (which is already correct)
and D3D12_DEPTH_STENCIL_VIEW_DESC (which needs some particular
flags). Otherwise, the underlying driver (validation layer) may
think we still need DEPTH_WRITE transition barrier.
Bug: dawn:485
Change-Id: I64d30426ed8042a98b3fef084bb90b125320a6f8
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/67742
Commit-Queue: Yunchao He <yunchao.he@intel.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
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.hversion that Dawn implements. - A C++ wrapper for the
webgpu.h.
- The
- 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:
- Dawn's bug tracker if you find issues with Dawn.
- Dawn's mailing list for other discussions related to Dawn.
- Dawn's source code
- Dawn's Matrix chatroom for live discussion around contributing or using Dawn.
- WebGPU's Matrix chatroom
Documentation table of content
Developer documentation:
- Dawn overview
- Building Dawn
- Contributing to Dawn
- Testing Dawn
- Debugging Dawn
- Dawn's infrastructure
- Dawn errors
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.