Graphics layer processing in a multiple operating systems framework is disclosed, including: presenting, at a display, a first composition including a sub-graphics layer object associated with a graphical interface corresponding to an application, wherein the application is executed in a guest subsystem of a system; receiving a content-related compositing request corresponding to a guest server graphics layer object in the guest subsystem; using the guest server graphics layer object to obtain a host server graphics layer object that corresponds to the guest server graphics layer object, wherein the host server graphics layer object is in a host subsystem of the system; obtaining a buffer corresponding to the guest server graphics layer object; and generating a second composition including the sub-graphics layer object, wherein the second composition is to be presented at the display.