[tint] Refactor swizzle view lowering to IR pass

Refactors the handling of swizzle assignment and SwizzleView
loading/storing by migrating it out of program_to_ir and into a
dedicated LowerSwizzleView IR transform pass. This simplifies the AST to
IR conversion significantly, but still isolates the SwizzleView logic
from the rest of the IR module passes by adding an AllowSwizzleView
property that is turned off after this pass, ensuring that SwizzleViews
don't leak past this early WGSL lowering IR transform.

Bug: 488394907
Change-Id: Ia0ed2a9d80609a84c243f2a87c6ee4b877bd0ff2
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/329876
Commit-Queue: Natalie Chouinard <chouinard@google.com>
Reviewed-by: James Price <jrprice@google.com>
24 files changed
tree: 857b65d1792d8550d877f1bede9e52c6f0aa2d0f
  1. .github/
  2. .vscode/
  3. agents/
  4. build_overrides/
  5. docs/
  6. generator/
  7. include/
  8. infra/
  9. scripts/
  10. src/
  11. test/
  12. third_party/
  13. tools/
  14. webgpu-cts/
  15. .bazelrc
  16. .bazelversion
  17. .clang-format
  18. .clang-format-ignore
  19. .clang-tidy
  20. .git-blame-ignore-revs
  21. .gitattributes
  22. .gitignore
  23. .gitmodules
  24. .gn
  25. .style.yapf
  26. .vpython3
  27. AUTHORS
  28. BUILD.bazel
  29. BUILD.gn
  30. CMakeLists.txt
  31. CMakeSettings.json
  32. CODE_OF_CONDUCT.md
  33. codereview.settings
  34. CONTRIBUTING.md
  35. CPPLINT.cfg
  36. DEPS
  37. DIR_METADATA
  38. go.mod
  39. go.sum
  40. go_presubmit_support.py
  41. LICENSE
  42. MODULE.bazel
  43. MODULE.bazel.lock
  44. OWNERS
  45. PRESUBMIT.py
  46. PRESUBMIT_test.py
  47. README.chromium
  48. README.md
  49. unsafe_buffers_paths.txt
  50. WATCHLISTS
  51. WORKSPACE.bazel
README.md

Build Status Matrix Space

Dawn, a WebGPU implementation

Dawn is an open-source and cross-platform implementation of the 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)

License

BSD 3-Clause License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.