display-tile(7) GGI display-tile(7)
NAME
display-tile : Divide display into tiles similar to a video wall
SYNOPSIS
display-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
o DirectBuffer support depends on the -usedb and -nodb options.
o 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)
