1 # SwiftShader 2 3 [](https://opensource.org/licenses/Apache-2.0) [](https://travis-ci.org/google/swiftshader) [](https://ci.appveyor.com/project/c0d1f1ed/swiftshader) 4 5 SwiftShader is a high-performance CPU-based implementation of the OpenGL ES and Direct3D 9 graphics APIs<sup>1</sup><sup>2</sup>. Its goal is to provide hardware independence for advanced 3D graphics. 6 7 Usage 8 ----- 9 10 The SwiftShader libraries act as drop-in replacements for graphics drivers. 11 12 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. 13 14 Prebuilt binaries can be found at: https://goo.gl/5MOcdb 15 16 Contributing 17 ------------ 18 19 See [CONTRIBUTING.txt](CONTRIBUTING.txt) for important contributing requirements. 20 21 The canonical repository for SwiftShader is hosted at: 22 https://swiftshader.googlesource.com/SwiftShader 23 24 All changes must be reviewed and approved in the [Gerrit](https://www.gerritcodereview.com/) review tool at: 25 https://swiftshader-review.googlesource.com 26 27 Authenticate your account here: 28 https://swiftshader-review.googlesource.com/new-password 29 30 All changes require a [Change-ID](https://gerrit-review.googlesource.com/Documentation/user-changeid.html) tag in the commit message. A commit hook may be used to add this tag automatically, and can be found at: 31 https://gerrit-review.googlesource.com/tools/hooks/commit-msg. To clone the repository and install the commit hook in one go: 32 33 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) 34 35 Changes are uploaded to Gerrit by performing: 36 37 git push origin HEAD:refs/for/master 38 39 Third-Party Dependencies 40 ------------------------ 41 42 The [third_party](third_party/) directory contains projects which originated outside of SwiftShader: 43 44 [LLVM](third_party/LLVM/) contains an outdated and diverged copy of the [LLVM](http://llvm.org/) compiler framework. Until further notice, maintenance fixes can be made directly in the SwiftShader repository. 45 46 [subzero](third_party/subzero/) contains a fork of the [Subzero](https://chromium.googlesource.com/native_client/pnacl-subzero/) project. It is part of Google Chrome's (Portable) [Native Client](https://developer.chrome.com/native-client) project. Its authoritative source is at [https://chromium.googlesource.com/native_client/pnacl-subzero/](https://chromium.googlesource.com/native_client/pnacl-subzero/). The fork was made using [git-subtree](https://github.com/git/git/blob/master/contrib/subtree/git-subtree.txt) to include all of Subzero's history, and until further notice it should **not** diverge from the upstream project. Contributions must be tested using the [README](third_party/subzero/docs/README.rst) instructions, reviewed at [https://chromium-review.googlesource.com](https://chromium-review.googlesource.com/q/project:native_client%252Fpnacl-subzero), and then pulled into the SwiftShader repository. 47 48 [llvm-subzero](third_party/llvm-subzero/) contains a minimized set of LLVM dependencies of the Subzero project. 49 50 [PowerVR_SDK](third_party/PowerVR_SDK/) contains a subset of the [PowerVR Graphics Native SDK](https://github.com/powervr-graphics/Native_SDK) for running several sample applications. 51 52 [googletest](third_party/googletest/) contains the [Google Test](https://github.com/google/googletest) 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. 53 54 Documentation 55 ------------- 56 57 See [docs/Index.md](docs/Index.md). 58 59 Contact 60 ------- 61 62 Public mailing list: [swiftshader (a] googlegroups.com](https://groups.google.com/forum/#!forum/swiftshader) 63 64 Bug tracker: https://bugs.chromium.org/p/swiftshader 65 66 License 67 ------- 68 69 The SwiftShader project is licensed under the Apache License Version 2.0. You can find a copy of it in [LICENSE.txt](LICENSE.txt). 70 71 Files in the third_party folder are subject to their respective license. 72 73 Authors and Contributors 74 ------------------------ 75 76 The legal authors for copyright purposes are listed in [AUTHORS.txt](AUTHORS.txt). 77 78 [CONTRIBUTORS.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](https://cla.developers.google.com/clas) and have contributed more than a formatting change, feel free to request to be added. 79 80 Disclaimer 81 ---------- 82 83 1. Trademarks are the property of their respective owners. 84 2. We do not claim official conformance with any graphics APIs at this moment. 85 3. This is not an official Google product. 86
