cogl: cogl: COGL cogl: cogl: COGL is a low level OpenGL abstraction library developed for (and cogl: part of) Clutter. It is used primarily by Clutter to provide a common cogl: rendering API that works transparently across OpenGL >=1.4, OpenGL ES cogl: 1.1 and OpenGL ES 2.0. cogl: cogl: cogl: https://developer.gnome.org/cogl/ cogl: