PFNGLVERTEXARRAYBINDVERTEXBUFFEREXTPROC

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 PFNGLVERTEXARRAYBINDVERTEXBUFFEREXTPROC = void function(GLuint vaobj, GLuint bindingindex, GLuint buffer, GLintptr offset, GLsizei stride)

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