Man pages matching name xcb_composite_name_window_pixmap in section 3:

xcb_composite_name_window_pixmap.3.en	debian 10 / libxcb-doc
xcb_composite_name_window_pixmap.3.en	debian 11 / libxcb-doc
xcb_composite_name_window_pixmap.3.en	debian 12 / libxcb-doc