I would like to know what standard functions and extensions correspond to which OpenGL version. Does anyone know where I could find a this information?
As for finding out which extensions have been integrated into the core, the easiest method I’ve found is to look at the latest version of the spec http://opengl.org/documentation/specs/ and at the end of it there’s a section that goes version by version and tells you what was promoted to from EXT to ARB, or ARB to core.
Then there’s the extension registry for those details…
http://opengl.org/registry/