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dawn / dawn / 5082727e550583dd1c64d6aa12ea8d06d7296f6c
commit5082727e550583dd1c64d6aa12ea8d06d7296f6c[log] [tgz]
authorYunchao He <yunchao.he@intel.com>Fri Dec 16 16:46:12 2022 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Dec 16 16:46:12 2022 +0000
tree55fc51e5482cdd859d67316c4b37eb79c9f19569
parent7c3e9a6dd25fa98077d9ae7d6d815dde45ca86c6 [diff]
D3D12: Remove the 24K extra memory for texture corruption

2D array texture may corrupt on some Intel devices, making out-of-bound
texture access and memory information leak. It's a critical security
issue. Intel driver team suggested the 24K extra memory approach in
order to mitigate the security issue before.

However, the texture corruption issue (and even the correctness issue)
can be worked around via allocating a few extra layers. And patches
have already been merged in Dawn, with a lot tests for verification. The
24K extra memory for each texture is actually incorrect and unnecessary.
So this patch removes relevant code in Dawn.

This patch mainly reverts some code of this patch below:
https://dawn-review.googlesource.com/c/dawn/+/96220

Bug: dawn:1507
Change-Id: Ic3239115ad4c74bdee928577ccbb20f1e35d13c3
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/114641
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Yunchao He <yunchao.he@intel.com>
2 files changed
tree: 55fc51e5482cdd859d67316c4b37eb79c9f19569
  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.