No Xinerama API

[Richard Munn]

HP-UX supposidly implement Xinerama or Panoramix (whichever you prefer). However, most implementations of this extension include the Xinerama library (libXinerama.a) which includes the API calls to find out about the physcial screens under the single virtual screen. This library is nowhere to be found on HP-UX or am I missing something?

[Rick Beldin]

Xinerama on the proprietary PA-RISC graphics cards doesn't really exist. HP has a component that is similar, called Single Logical Screen or SLS. This extension doesn't have an API, but is configured in the X0screens file to allow multiple graphics cards to be treated as one virtual screen.

Once a machine is setup for SLS, X clients don't know that they are running under this configuration - the screen is merely taller or wider than usual for a single card.

Look in the file /etc/X11/X0screens itself for some more information on configuration. /usr/lib/X11/info/screens/hp has detailed information about configuration and restrictions with SLS.

[Mike Stroyan]

An application can get some information about SLS configurations by looking for a _HP_SLS_CONFIGURATION_INFO property on the root window. That is discussed in this white paper-
http://www.hp.com/xwindow/sharedInfo/Whitepapers/Sls/sls.html