Many OpenGL extensions, as well as extensions to related APIs like GLU, GLX, and WGL, have been defined by vendors and groups of vendors. The extension registry is maintained by SGI and contains specifications for all known extensions, written as modifications to the appropriate specification documents. The registry also defines naming conventions, guidelines for creating new extensions and writing suitable extension specifications, and other related documentation. The OpenGL diagnostic tool performs some OpenGL initialisation and graphical test. It will use the desktop resolutio... [ read more about OpenGL Extension Viewer >> ]