OpenGL 4.1 supports OpenGL ES 2.0 completely. However on windows platform there seems to be incostencies in how the API made available to user. Functions such as glShader* etc should be imported by using wglGetProcAddress, as everything else above OpenGL 1.1. Despite this small subset of functions have real symbols exported on atioglxx.dll (egl* functions). This causes some problems as normal egl.h basically requires that all functions would be exported directly from a dll.
Will the methods of accessing the functions be unified in future? Ofcourse we can make a workaround and brutally edit egl.h to remove functions not explicitly exported or wrap them into a library which handles fetching of the proc address, however this seems to be a rather poor solution if every vendor has to make their own wrapper for this. Will AMD eventually provide libGLESv2.dll to export the functions which are lacking from OpenGL32.dll/atioglx.dll?