display-tile(7) GGI display-tile(7)NAMEdisplay-tile : Divide display into tiles similar to a video wall
SYNOPSISdisplay-tile : [ [-usedb] | [-nodb] ]
<offset-x>,<offset-y>,<size-x>,<size-y>,<child-target-spec>
...
DESCRIPTION
Emulates one big target, where one or more areas are mapped to differ‐
ent child visuals.
OPTIONS
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
:p`child-target-spec`
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 Direct‐
Buffer 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.
FEATURES
· 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 obsti‐
nate applications that cannot run without it, by specifying one
tile which maps the whole screen.
libggi-2.2.x 2003-04-02 display-tile(7)