Google Git
Sign in
dawn / dawn / dd0332ec91b8f8b3cc72be53897854b0332e04a2
commitdd0332ec91b8f8b3cc72be53897854b0332e04a2[log] [tgz]
authorJiawei Shao <jiawei.shao@intel.com>Fri Feb 24 01:34:56 2023 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Feb 24 01:34:56 2023 +0000
tree23d4b0d406fd3465edfcabf83824b128a8d10701
parentfa5cda877f47c8395c4fbc1443b6b29d8a912c93 [diff]
D3D12: Add workaround for DstAlpha blend factor issue on Intel GPUs

On Intel Gen9 and Gen9.5 GPUs there is a D3D12 driver bug about
using DstAlpha as the source blend factors in both color and alpha
blending.

Although we cannot add workaround for all such cases, we have
confirmed that when the blend operation is 'add', and the
destination blend factors are ‘zero', we can workaround this driver
bug by replacing 'add' to 'minus'. We cannot add workaround when
destination blend factor is another value.

This patch adds such workaround on the affected platforms.

Bug: dawn:1579
Test: dawn_end2end_tests
Change-Id: If7c82b9d559b876e42fb36e2f539f9ff2f71ea91
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/120981
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
5 files changed
tree: 23d4b0d406fd3465edfcabf83824b128a8d10701
  1. .vscode/
  2. build_overrides/
  3. docs/
  4. generator/
  5. include/
  6. infra/
  7. scripts/
  8. src/
  9. test/
  10. third_party/
  11. tools/
  12. webgpu-cts/
  13. .clang-format
  14. .clang-tidy
  15. .gitattributes
  16. .gitignore
  17. .gn
  18. AUTHORS
  19. BUILD.gn
  20. CMakeLists.txt
  21. CMakeSettings.json
  22. CODE_OF_CONDUCT.md
  23. codereview.settings
  24. CONTRIBUTING.md
  25. CPPLINT.cfg
  26. dawn.json
  27. dawn_wire.json
  28. DEPS
  29. DIR_METADATA
  30. Doxyfile
  31. go.mod
  32. go.sum
  33. go_presubmit_support.py
  34. LICENSE
  35. OWNERS
  36. PRESUBMIT.py
  37. README.chromium
  38. README.md
  39. tint_overrides_with_defaults.gni
README.md

Dawn's logo: a sun rising behind a stylized mountain inspired by the WebGPU logo. The text Dawn is written below it.

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, Metal, Vulkan and OpenGL. See per API support for more details.
  • A client-server implementation of WebGPU for applications that are in a sandbox without access to native drivers
  • Tint is a compiler for the WebGPU Shader Language (WGSL) that can be used in standalone to convert shaders from and to WGSL.

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.