mcogamma(1G)

NAME
     mcogamma - set gamma on MultiChannel Option channels

SYNOPSIS
     mcogamma -p# -c# -f<filename>

DESCRIPTION
     The mcogamma command allows the setting of the gamma lookup table
     directly for each output of the MultiChannel Option. This command affects
     the MultiChannel Option only, and has no effect on the standard graphics
     output.

OPTIONS
     -p  pipe#
          Specify which graphics pipe number to use. In a machine with a
          single graphics pipe, this must be set to zero.

     -c  channel#
          Specify which channel of the MCO to change; this must be a value
          from zero to five.

     -f  filename
          Specify the file which describes the gamma table. This must be a
          text file of 1024 lines; each line has three integers from 0 to
          1023, in ASCII format, separated by white space. The three integers
          represent the red, green, and blue output intensities respectively,
          for this entry.

          For instance, a file corresponding to a gamma of 1.0 would look like
          this:
          0 0 0
          1 1 1
          2 2 2
          3 3 3
          [... and so on ...]
          1023 1023 1023

          If the above file was saved to disk as gammaone, then the command
          mcogamma -p0 -c2 gammaone
          would set the gamma of the main graphics pipe, MCO output number 2,
          to 1.0.

HARDWARE
     mcogamma works only on IRIS RealityEngine, RealityEngine2, and VTX
     graphics equipped with the optional MultiChannel Option (MCO) hardware.

SEE ALSO
     gamma(6D), gammaramp(3G)
NOTES
     The normal gamma command, and the value in the file
     /etc/config/system.glGammaVal, have no effect on the MCO output.

     MCO gamma reverts to the default whenever graphics is initialized.