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.
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