Opengl Official Site

OGC & Khronos Form Liaison to Improve Interoperability within Geospatial and 3D Graphics Communities. Khronos has formed a liaison agreement with the Open Geospatial Consortium (OGC) in the interest of jointly advancing open geospatial standards related to AR and VR, distributed simulation, and 3D content services.

Opengl Wikipedia

Open Graphics Library (OpenGL) is a cross-language, cross-platform application programming interface (API) for rendering 2D and 3D vector graphics.The API is typically used to interact with a graphics processing unit (GPU), to achieve hardware-accelerated rendering.