How are extensions handled (on OS X)?

[tildeleb]

I would like to add support for:
gl.MAX_TEXTURE_MAX_ANISOTROPY_EXT
gl.TEXTURE_MAX_ANISOTROPY_EXT

This has to be one of the simplest extensions to add, just two constants. It was first implemented in 1999 on the GeForce 256 and should be available on almost every chip in use today.

I don't see support for any other EXT extensions or ARB extensions other than ARB DEBUG. I looked at previous issues and didn't see much information about the policy or technical issues with extensions.

What's the right approach and what don't I know before I try to add support?

[dmitshur]

I would recommend using the bindings at https://github.com/go-gl/gl. They already have both of those extensions (and many more).