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dawn / dawn / 4eeb0bd6e2dc3f608a079b7e62ff3fd3befccdef
commit4eeb0bd6e2dc3f608a079b7e62ff3fd3befccdef[log] [tgz]
authorStephen White <senorblanco@chromium.org>Wed Jan 24 22:30:52 2024 +0000
committerDawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Jan 24 22:30:52 2024 +0000
tree2c3e85ae891029cb239c6a4fb8244907d94a518c
parentc65ac40803c289104fa26156113ebfd37280dd7a [diff]
Implement push_constant-based firstIndex transform.

This transform offsets the vertex_index and/or instance_index builtin
variables by a user-supplied first_vertex and first_instance offset.
This is required for shading languages that use zero-based first_*
variables such as GLSL and HLSL.

Also, GLSL requires push constants to be wrapped in a struct, and the
struct to be emitted, but not emitted as an interface block. Thus,
change the "skip_push_constants" flag in the AddBlockAttribute
to "push_constants_wrap_only", which causes push constants to be
wrapped in a struct, but to not have the BlockAttribute added.

Bug: tint:2140
Change-Id: I7ce7bb67b58efa110e91fc38d840e674adaf9d0b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/169461
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
18 files changed
tree: 2c3e85ae891029cb239c6a4fb8244907d94a518c
  1. .github/
  2. .vscode/
  3. build_overrides/
  4. docs/
  5. generator/
  6. include/
  7. infra/
  8. scripts/
  9. src/
  10. test/
  11. third_party/
  12. tools/
  13. webgpu-cts/
  14. build
  15. buildtools
  16. testing
  17. .bazelrc
  18. .clang-format
  19. .clang-tidy
  20. .gitattributes
  21. .gitignore
  22. .gitmodules
  23. .gn
  24. AUTHORS
  25. BUILD.bazel
  26. BUILD.gn
  27. CMakeLists.txt
  28. CMakeSettings.json
  29. CODE_OF_CONDUCT.md
  30. codereview.settings
  31. CONTRIBUTING.md
  32. CPPLINT.cfg
  33. DEPS
  34. DIR_METADATA
  35. Doxyfile
  36. go.mod
  37. go.sum
  38. go_presubmit_support.py
  39. LICENSE
  40. OWNERS
  41. PRESUBMIT.py
  42. README.chromium
  43. README.md
  44. 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.