Type Definition glu_sys::glu::PFNGLTEXTURESUBIMAGE2DEXTPROC

type PFNGLTEXTURESUBIMAGE2DEXTPROC = Option<unsafe extern "C" fn(texture: GLuint, target: GLenum, level: GLint, xoffset: GLint, yoffset: GLint, width: GLsizei, height: GLsizei, format: GLenum, type_: GLenum, pixels: *const c_void)>;