Latest release: OpenCSG 1.8.1 (09-Mar-2025) Introduction OpenCSG is a library that does image-based CSG rendering using OpenGL. It is written in C++ and supports most modern graphics hardware using Microsoft Windows or the Linux operating system. The current version is OpenCSG-1.8.1. What is CSG, anyway? CSG is short for Constructive Solid Geometry and denotes an approach to model complex 3D-shape