toolbox/utilities/setfb README
The 'setfb' is a 5.1 utility intended for use by developers
wishing to test their applications in an 8-bit system, when
what they have is a 24-bit system.
setfb sets the effective frame buffer depth to 8 or 24
bitplanes. Actually what this does is program the xmap9
chips to use 8 or 24 bits of pixel data from the frame
buffer.
The graphics driver will remember what the depth is set to,
and report this value when queried by GL, Xsgi, or other
applications. The depth set by setfb will remain in effect
until the system is rebooted, or setfb is run with a new
depth.
After executing setfb, Xsgi must be restarted. If Xsgi was
not running when setfb was executed, it is sufficient to
run /usr/gfx/gfxinit before starting Xsgi.
USAGE: setfb -d depth
If depth is not one of 0,8,24, a usage message is
printed.
Depth = 0 tells the driver to set depth to the
actual number of bitplanes installed.
NOTE: only usable with Indigo^2 XL and Indy machines
BUGS: no multi-head support; affects all installed NG1 boards.
Documentation
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