This paper presents an extensible system for interactively rendering multiple types of ray-casted objects in a manner compatible with pre-existing rendering engines. The sample implementation includes support for general quadrics and volumetric isosurfaces. It also includes a high-speed sphere renderer, and of course a standard triangle-rendering pipeline. The system is designed so that most of the algorithms designed to run on the existing raster engine can be added with minimal overhead/coding effort. We have demonstrated shadowing using the shadow-map algorithm. (“Beyond Triangles: A Simple Framework For Hardware-Accelerated Non-Triangular Primitives”, To be Submitted for publication.)