# librashader  A preprocessor, compiler, and runtime for RetroArch 'slang' shaders, rewritten in pure Rust. Heavily WIP. ## License **There is not yet a functioning implementation of librashader but this section outlines its licensing goals in contrast to RetroArch.** While librashader is an independent reimplementation of the RetroArch shader pipeline, referencing the RetroArch source code was indispensable to its creation. As it is therefore considered a derivative work, the core parts of librashader such as the preprocessor, the preset parser, the reflection library, and the runtimes, are all licensed under GPLv3. The librashader C API, i.e. its headers and definitions, *not its implementation in `librashader_capi`*, are unique to librashader and are more permissively licensed, and may allow you to use librashader in your permissively licensed or proprietary project. While the code for `librashader_capi` (`librashader.so` and `rashader.dll`) is still under GPLv3, you may use librashader in a non-GPL work by linking against the MIT licensed `librashader_ld`, which implements the librashader C API, and thunks its calls to any `librashader.so` or `rashader.dll` library found in the load path, *provided that `librashader.so` or `rashader.dll` are distributed under the restrictions of GPLv3*. Note that if your project is not compatible with GPLv3, you **can not distribute `librashader.so` or `rashader.dll`** alongside your project, **only `librashader-ld.so` or `rashader-ld.dll`**, which will do nothing without a librashader implementation in the load path. The end user must obtain the implementation of librashader themselves.