3D graphics have become so popular, particularly in video games, that specialized APIs (application programming interfaces) have been created to ease the processes in all stages of computer graphics generation. These APIs have also proved vital to computer graphics hardware manufacturers, as they provide a way for programmers to access the hardware in an abstract way, while still taking advantage of the special hardware of any specific graphics card.
The first 3D graphics framework was probably Core, published by the ACM in 1977.