Provided by: libggi2_2.2.2-5ubuntu2_amd64 bug


       display-tile - Divide display into tiles similar to a video wall


       display-tile : [ [-usedb] | [-nodb] ]


       Emulates one big target, where one or more areas are mapped to different child visuals.


       For each tile (i.e. child visual or mapped area), the following must be specified:

       offset-x, offset-y
              coordinates (within the parent visual) of the top-left corner of the child visual

       size-x, size-y
              width and height of the child visual

              a  target  spec.  Since target specs can (and often do) contain colons, it needs to
              be enclosed in parentheses.

       The following options apply to the whole display-tile:

       -usedb Enables DirectBuffer emulation. This is the default mode.

              The contents of each mapped area  is  blitted  from  the  DirectBuffer  into  their
              respective  child  visuals  at  regular  intervals  or  when the visual is flushed.
              DirectBuffer emulation works  regardless  of  whether  the  child  visuals  support
              DirectBuffer or not.

       -nodb  Disables DirectBuffer emulation.  LibGGI primitives are passed to each of the child
              visuals with the necessary clipping and  translation.   Thus,  if  a  child  visual
              underlying  a  mapped  area  supports acceleration, then the operation on that area
              will be accelerated.


       ·   DirectBuffer support depends on the -usedb and -nodb options.

       ·   Accelerated in no-DB mode if the underlying target is, otherwise unaccelerated.

              Tip: display-tile can be used to emulate DirectBuffer  for  obstinate  applications
              that cannot run without it, by specifying one tile which maps the whole screen.