GMAN
A RenderMan-compatible renderer, revived in 2026
...The z-buffer renderer supports all seven RenderMan quadrics, convex polygons, matte/plastic/metal surface shaders, ambient/distant/point lights and TIFF, PNG, JPEG and PNM output. It builds on macOS and Linux with C++17 and CMake.
Development, releases and build instructions: https://github.com/jac18281828/gman
Start page: https://2ad.com/gman
Questions and bugs: https://github.com/jac18281828/gman/issues
Contact: info@2ad.com
GMAN implements part of the RenderMan interface. Texturing, antialiasing, motion blur and shading-language compilation remain unfinished. ...