Why does OpenGL don't need something like EGL in OpenGL ES

[ari.kaspari]

Hello,
does anybody of you know why OpenGL don't need something like EGL in OpenGL ES?
Or is there something like EGL in OpenGL included?
Thank you

[V-man]

With GL, it depends on which platform you are on.

1. On Windows, you use wgl
http://www.opengl.org/wiki/Platform_specifics:_Windows#The_WGL_functions

2. On *nix systems, glX is used.
http://www.opengl.org/wiki/Platform_specifics:_Linux

3. On Mac's, it use to be agl functions but I think they dumped these in favor of NSGL functions. I'm not sure. I'm not a Mac expert.
http://www.opengl.org/wiki/Programming_OpenGL_on_Mac_OS_X

All that stuff has existed since the beginning, 1992.
When OpenGL ES was designed, they wanted to create a single interface for all PDA and cellphones and onboard PCs = EGL.