MirOS Manual: xgamma(1)


xgamma(1)           UNIX Programmer's Manual            xgamma(1)

NAME

     xgamma - Alter a monitor's gamma correction for XFree86

SYNOPSIS

     xgamma [-display display] [-screen screen] [-quiet] [-gamma
     f.f | [[-rgamma f.f] [-ggamma f.f] [-bgamma f.f]]]

DESCRIPTION

     xgamma allows X users to query and alter the gamma correc-
     tion of a monitor via the XFree86 X server video mode exten-
     sion (XFree86-VidModeExtension).

OPTIONS

     -display display
             This argument allows you to specify the server to
             connect to; see X(7).

     -screen screen
             When multiple displays are configured as a single
             logical display, this option allows you to select
             the screen you wish to change.

     -quiet  Silence the normal output of xgamma

     -help   Print out the `Usage:' command syntax summary.

     -gamma f.f
             The gamma correction can either be defined as a sin-
             gle value, or separately for the red, green and blue
             components. This argument specifies the gamma
             correction as a single value. If no value for the
             gamma correction is given xgamma returns the current
             gamma correction of the display.

     -rgamma f.f
             This argument specifies the red component of the
             gamma correction.

     -ggamma f.f
             This argument specifies the green component of the
             gamma correction.

     -bgamma f.f
             This argument specifies the blue component of the
             gamma correction.

ENVIRONMENT

     DISPLAY To get default host and display number.

BUGS

     This client changes the internal values of the gamma correc-
     tion for the Xserver. Whether or not these values are

XFree86                   Version 4.5.0                         1

xgamma(1)           UNIX Programmer's Manual            xgamma(1)

     respected depends on the video drivers.

     The gamma values are passed to the Xserver with 3 decimal
     places of accuracy.

SEE ALSO

     xvidtune(1)

AUTHORS

     Kaleb S. Keithley, X Consortium.
     David Dawes, David Bateman

XFree86                   Version 4.5.0                         2

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