Using glman
Mike Bailey, Steve Cunningham · 2011
The Traditional View When you develop a graphics application with the OpenGL API, you define geometry, viewing, projection, and a number of appearance properties. Objects’ geometries are defined by their vertices, their normals, and their graphics primitives, specified by glBegin-glEnd pairs that encompass points, lines, geometry-compressed groups, or polygons. Viewing and projection are each defined with a specific function. Appearance is specified by defining color, shading, materials, and lighting, or texture mapping. This information is all processed in a very straightforward way by the fixed-function OpenGL system, acting either in software or in a graphics card.