GL_NV_depth_nonlinear

I’m trying to use this EGL extension with SDL right now. It’s a simple attribute that has to be passed in when creating the egl context. But I can’t figure out a good way of getting that attribute into the SDL code. Clearly I’m going to have to modify some SDL code, but I’m not sure what the best way of going about this is. Any suggestions? Obviously the easiest thing to do would be to add it to the list of GL attributes, but that seems a bit excessive…