Update SPIR-V Headers to 268a06176

    268a06176 Reserve a single block of opcodes and enumerants for Saarland University (#343)
    f7e1a2ef5 Merge pull request #336 from DBDuncan/shift-codeplay-range
    7f1d2f415 Merge pull request #344 from ewerness-nv/SPV_KHR_ray_tracing_position_fetch
    131fddea3 SPV_KHR_ray_tracing_position_fetch
    e08a279cf Merge pull request #340 from MrSidims/fix-tile-image-error
    a53bc4bf6 Merge pull request #342 from joycebrum/main
    d4461bc88 chore: Set minimal permissions to presubmit
    c8f869ffb Fix TileImage capabilities order
    cfbe4feef Merge pull request #335 from janharaldfredriksen-arm/SPV_EXT_shader_tile_image
    7c862b551 Shift Codeplay opcode range to preserve alignment of opcodes and non-opcodes
    80cea00f6 Add back version field for new enumerants and operands, but set to None.
    862efd55a Address feedback on incorrect use of version and extension fields.
    d218c4ab7 Add SPV_EXT_shader_tile_image.
    29ba24931 Merge pull request #329 from DBDuncan/reserve-ranges-codeplay
    90547c54e Merge pull request #331 from juan-lunarg/juaramos/fix_cmake_again_part_2
    295ac7e34 Reserve SPIR-V blocks for Codeplay
    e90684a05 cmake: Overally cleanup/testing update
    5b21f14b2 Merge pull request #330 from dneto0/revert-cmake-changes
    e0087ad2c Revert "Merge pull request #326 from juan-lunarg/juaramos/cmake"
    a41cf67df Merge pull request #326 from juan-lunarg/juaramos/cmake
    3834d4128 Merge pull request #327 from gnl21/gnl-image-dims
    2666ce79a Simplify enabling capabilities for image Dim
    4b5bf03e8 cmake: Overally cleanup/testing update
    1feaf4414 Merge pull request #320 from CodeLinaro/spv-qcom-image-processing
    9f8e16aa5 Merge pull request #321 from asudarsa/asudarsa/add_fpga_latency_control_ext
    647dec7f8 Merge pull request #322 from bashbaug/SPV_INTEL_bfloat16_conversion
    738a7cc08 Fix error in merge conflict resolution
    391c49035 Merge remote-tracking branch 'real-origin/main' into asudarsa/add_fpga_latency_control_ext
    e65c5d143 headers support for SPV_INTEL_bfloat16_conversion
    78a1e8aaa Add parameters
    0e9e42f65 Remove redundant extensions entry
    afe1c65aa Add support for SPV_INTEL_fpga_latency_control extension
    3228364ff SPV_QCOM_image_processing
    8917a8619 SPV_QCOM_image_processing
    2c3cfe20d Merge branch 'KhronosGroup:main' into spv-qcom-image-processing
    295cf5fb3 Merge pull request #317 from tiwaria1/register_map_interface
    317010351 update parameter name to match spec in grammar file
    8a0d0b6b7 move FPGAKernelAttributesv2INTEL to capability section in all files
    f5fc87239 SPV_QCOM_image_processing
    e01ade256 SPV_QCOM_image_processing
    e72e3c372 correct file entry position for FPGAKernelAttributesv2INTEL
    9e24e0684 Merge branch 'register_map_interface' of https://github.com/tiwaria1/SPIRV-Headers into register_map_interface
    606e22312 add FPGAKernelAttributesv2INTEL to all files
    29cd8f66a address review comment
    32a226085 add RegisterMapInterfaceINTEL


Bug: b/123642959
Change-Id: Icc82ef7bf1e62fb6b14272930bd2ace0aa51256f
tree: 4b84abf1abc0771be94a5ee5338fdc08a5a0aacb
  1. .vscode/
  2. build/
  3. build_overrides/
  4. docs/
  5. include/
  6. infra/
  7. src/
  8. tests/
  9. third_party/
  10. tools/
  11. .clang-format
  12. .dir-locals.el
  13. .gitignore
  14. .gitmodules
  15. Android.bp
  16. AUTHORS.txt
  17. BUILD.gn
  18. CMakeLists.txt
  19. CMakeSettings.json
  20. codereview.settings
  24. LICENSE.txt
  25. OWNERS
  26. README.md




SwiftShader[^1] is a high-performance CPU-based implementation[^2] of the Vulkan[^3] 1.3 graphics API. Its goal is to provide hardware independence for advanced 3D graphics.

NOTE: The ANGLE project can be used to achieve a layered implementation[^4] of OpenGL ES 3.1 (aka. “SwANGLE”).


SwiftShader libraries can be built for Windows, Linux, and macOS.
Android and Chrome (OS) build environments are also supported.

  • CMake
    Install CMake for Linux, macOS, or Windows and use either the GUI or run the following terminal commands:

    cd build
    cmake ..
    cmake --build . --parallel

    Tip: Set the CMAKE_BUILD_PARALLEL_LEVEL environment variable to control the level of parallelism.

  • Visual Studio
    To build the Vulkan ICD library, use Visual Studio 2019 to open the project folder and wait for it to run CMake. Open the CMake Targets View in the Solution Explorer and select the vk_swiftshader project to build it.


The SwiftShader libraries act as drop-in replacements for graphics drivers.

On Windows, most applications can be made to use SwiftShader's DLLs by placing them in the same folder as the executable. On Linux, the LD_LIBRARY_PATH environment variable or -rpath linker option can be used to direct applications to search for shared libraries in the indicated directory first.

In general, Vulkan applications look for a shared library named vulkan-1.dll on Windows (vulkan-1.so on Linux). This ‘loader’ library then redirects API calls to the actual Installable Client Driver (ICD). SwiftShader's ICD is named libvk_swiftshader.dll, but it can be renamed to vulkan-1.dll to be loaded directly by the application. Alternatively, you can set the VK_ICD_FILENAMES environment variable to the path to vk_swiftshader_icd.json file that is generated under the build directory (e.g. .\SwiftShader\build\Windows\vk_swiftshader_icd.json). To learn more about how Vulkan loading works, read the official documentation here.


See CONTRIBUTING.txt for important contributing requirements.

The canonical repository for SwiftShader is hosted at: https://swiftshader.googlesource.com/SwiftShader.

All changes must be reviewed and approved in the Gerrit review tool at: https://swiftshader-review.googlesource.com. You must sign in to this site with a Google Account before changes can be uploaded.

Next, authenticate your account here: https://swiftshader.googlesource.com/new-password (use the same e-mail address as the one configured as the Git commit author).

All changes require a Change-ID tag in the commit message. A commit hook may be used to add this tag automatically, and can be found at: https://gerrit-review.googlesource.com/tools/hooks/commit-msg. You can execute git clone https://swiftshader.googlesource.com/SwiftShader and manually place the commit hook in SwiftShader/.git/hooks/, or to clone the repository and install the commit hook in one go:

git clone https://swiftshader.googlesource.com/SwiftShader && (cd SwiftShader && git submodule update --init --recursive third_party/git-hooks && ./third_party/git-hooks/install_hooks.sh)

On Windows, this command line requires using the Git Bash Shell.

Changes are uploaded to Gerrit by executing:

git push origin HEAD:refs/for/master

When ready, add a project owner as a reviewer on your change.

Some tests will automatically be run against the change. Notably, presubmit.sh verifies the change has been formatted using clang-format 11.0.1. Most IDEs come with clang-format support, but may require upgrading/downgrading to the clang-format version 11.0.0 release version (notably Chromium's buildtools has a clang-format binary which can be an in-between revision which produces different formatting results).


SwiftShader's Vulkan implementation can be tested using the dEQP test suite.

See docs/dEQP.md for details.

Third-Party Dependencies

The third_party directory contains projects which originated outside of SwiftShader:

subzero contains a fork of the Subzero project. It originates from Google Chrome‘s (Portable) Native Client project. The fork was made using git-subtree to include all of Subzero’s history.

llvm-subzero contains a minimized set of LLVM dependencies of the Subzero project.

PowerVR_SDK contains a subset of the PowerVR Graphics Native SDK for running several sample applications.

googletest contains the Google Test project, as a Git submodule. It is used for running unit tests for Chromium, and Reactor unit tests. Run git submodule update --init to obtain/update the code. Any contributions should be made upstream.


See docs/Index.md.


Public mailing list: swiftshader@googlegroups.com

General bug tracker: https://g.co/swiftshaderbugs
Chrome specific bugs: https://bugs.chromium.org/p/swiftshader


The SwiftShader project is licensed under the Apache License Version 2.0. You can find a copy of it in LICENSE.txt.

Files in the third_party folder are subject to their respective license.

Authors and Contributors

The legal authors for copyright purposes are listed in AUTHORS.txt.

CONTRIBUTORS.txt contains a list of names of individuals who have contributed to SwiftShader. If you‘re not on the list, but you’ve signed the Google CLA and have contributed more than a formatting change, feel free to request to be added.

Notes and Disclaimers

[^1]: This is not an official Google product.
[^2]: Vulkan 1.3 conformance: https://www.khronos.org/conformance/adopters/conformant-products#submission_717
[^3]: Trademarks are the property of their respective owners.
[^4]: OpenGL ES 3.1 conformance: https://www.khronos.org/conformance/adopters/conformant-products/opengles#submission_906