Realtime Accelerated Renderer for Equations (RARE)

RARE is a C++ library for realtime rendering of equations. It takes an OASIS expression tree as input and provides the necessary vertex buffers and shaders to render it.

Build Instructions

RARE uses C++23, therefore a recent compiler is required. RARE is known to work with Clang 21 or newer. Additionally the following are required:

• CMake
• Catch2* for unit testing. (optional)
• SDL3* for the sample application. (optional)

*can be downloaded at configure time automatically by CMake

Runtime DLL Copying (Windows)

When executables are built inside this project, RARE attaches a post-build step that copies runtime DLLs for linked shared dependencies next to the executable.

For downstream projects that include RARE via add_subdirectory(...), call this helper after defining and linking your executable:

target_link_libraries(MyApp PRIVATE RARE)
target_copy_vendored_deps(MyApp)

This helper is a no-op on non-Windows platforms.

Features

• Realtime rendering of mathematical expressions
• Support for a wide range of mathematical functions and operators
• Customizable shaders for advanced rendering techniques (e.g. signed distance field rendering)
• Integration with OASIS for seamless expression tree handling

Contributing Guidelines

See the OASIS Contributing Guidelines

Code Of Conduct

See the OASIS Code Of Conduct