cal =
SetGammaMethod(cal,gammaMode,[precision])
Set up the gamma correction mode to be used. Options
are:
gammaMode == 0 - exhaustive table search. Accurate but slow.
gammaMode == 1 - inverse table lookup. Fast but less accurate.
If gammaMode == 1, then you may specify the precision of the
inverse table. The default is 1000 levels.
8/4/96 dhb Wrote it.
8/21/97 dhb Update for structure.
3/12/98 dhb Change name to
SetGammaCorrectMode
Psychtoolbox/PsychCal/SetGammaMethod.m