FTGL is a font rendering library for OpenGL applications. This is an external library included in ROOT for convenience as it is not readily available on Windows. Current version included in ROOT is ftgl-2.1.2.
Supported rendering modes are:
- Bitmaps
- Anti-aliased pixmaps
- Texture maps
- Outlines
- Polygon meshes
- Extruded polygon meshes
FTGL uses the Freetype font library to open and decode standard font files. It then takes that output and stores it in a format most efficient for OpenGL rendering.
See the FTGL homepage for more information.