PFNGLGETINTERNALFORMATI64VPROC

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
extern (C)
alias PFNGLGETINTERNALFORMATI64VPROC = void function(GLenum target, GLenum internalformat, GLenum pname, GLsizei bufSize, GLint64* params)

Meta