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It is then up to the developers implementing this specification to come up with a solution of how this function should operate.

The OpenGL specification specifies exactly what the result/output of each function should be and how it should perform. However, OpenGL by itself is not an API, but merely a specification, developed and maintained by the Khronos Group.

OpenGL is mainly considered an API (an Application Programming Interface) that provides us with a large set of functions that we can use to manipulate graphics and images.

Before starting our journey we should first define what OpenGL actually is.