Get the hwloc OS device object corresponding to the OpenGL display given by name.
Return the OS device object describing the OpenGL display whose name is
name, built as ":port.device" such as ":0.0" . Return NULL if there is none.
topology does not necessarily have to match the current machine. For instance the topology may be an XML import of a remote host. I/O devices detection and the GL component must be enabled in the topology.
- The corresponding PCI device object can be obtained by looking at the OS device parent object.