Make vk-unittests use VulkanWrapper

This change moves the VulkanBenchmark and DrawBenchmark classes to
VulkanWrapper so that they can be used from other unit tests -- namely,
vk-unittests. In doing so, it became clear that using these as base
classes wasn't great for writing googletests, as text fixtures are
classes themselves, and this resulted in messy multiple inheritance. So
I modified the two classes to use callback registration instead of
virtual functions.

Apart from reworking existing tests (e.g. see TriangleBenchmark.cpp), I
also added a new DrawTests.cpp to vk-unittests with a unit test to make
sure we don't crash when leaving out "gl_Position", a bug that sugoi@
fixed in swiftshader-cl/51808. This is a good example of how easy it can
be to write such unit tests now.

List of changes:

* Moved VulkanBenchmark and DrawBenchmark to VulkanWrapper, and renamed
  VulkanTester and DrawTester respectively.
* ClearImageBenchmark refactored to aggregate a VulkanTester. This is an
  example where using a class is fine as we can still use the testers
  via aggregation.
* TriangleBenchmark tests refactored to use DrawTester and register
  callbacks.
* Moved compute tests to a ComputeTests.cpp.
* Moved the other tests to BasicTests.cpp.
* Added DrawTests.cpp with new DrawTests.VertexShaderNoPositionOutput
  test.
* CMake: add VulkanWrapper target for unittests as well as benchmarks.
* CMake: change FOLDER to better organize the tests and benchmarks for
  VS.

Bug: b/176981107
Change-Id: Ib1a0b85b3df787d2e39da08930414f9a14954a73
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/52348
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alexis H├ętu <sugoi@google.com>
Tested-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
23 files changed
tree: 5d737b2ed554808d9a65ba82f8538972596d32a4
  1. .clang-format
  2. .dir-locals.el
  3. .gitignore
  4. .gitmodules
  5. .vscode/
  6. AUTHORS.txt
  7. Android.bp
  8. BUILD.gn
  9. CMakeLists.txt
  10. CMakeSettings.json
  11. CONTRIBUTING.txt
  12. CONTRIBUTORS.txt
  13. LICENSE.txt
  14. OWNERS
  15. README.md
  16. build/
  17. build_overrides/
  18. codereview.settings
  19. docs/
  20. extensions/
  21. include/
  22. infra/
  23. src/
  24. tests/
  25. third_party/
  26. tools/
README.md

SwiftShader

License

Introduction

SwiftShader is a high-performance CPU-based implementation of the Vulkan graphics API12. Its goal is to provide hardware independence for advanced 3D graphics.

NOTE: SwiftShader's OpenGL ES frontend is no longer supported, and will eventually be removed. Read more about our recommendation to use ANGLE on top of SwiftShader Vulkan here.

Building

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
    
    ./vk-unittests
    

    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.

Usage

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.

Contributing

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

Authenticate your account here: https://swiftshader-review.googlesource.com/new-password

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. To clone the repository and install the commit hook in one go:

git clone https://swiftshader.googlesource.com/SwiftShader && (cd SwiftShader && curl -Lo `git rev-parse --git-dir`/hooks/commit-msg https://gerrit-review.googlesource.com/tools/hooks/commit-msg ; chmod +x `git rev-parse --git-dir`/hooks/commit-msg)

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 10.0. Most IDEs come with clang-format support, but may require downgrading to clang-format version 10.0.

Testing

SwiftShader's OpenGL ES 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.

Documentation

See docs/Index.md.

Contact

Public mailing list: swiftshader@googlegroups.com

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

License

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.

Disclaimer

  1. Trademarks are the property of their respective owners.
  2. This is not an official Google product.