RGBcol(3G)

NAME
     RGBcol - sets the current color in RGB mode

FORTRAN 77 SPECIFICATION
     subroutine RGBcol(red, green, blue)
     integer*4 red, green, blue

PARAMETERS
     red     expects the value indicating the intensity of the red component.

     green   expects the value indicating the intensity of the green
             component.

     blue    expects the value indicating the intensity of the blue component.

DESCRIPTION
     RGBcol sets the red, green, and blue color components of the currently
     active GL framebuffer, one of normal, popup, overlay, or underlay as
     specified by drawmo, to the specified values.  Alpha, when supported, is
     set to the maximum value.  The current framebuffer must be in RGB mode
     for the RGBcol command to be applicable.  Most drawing commands copy the
     current RGBA color components into the color bitplanes of the current
     framebuffer.  Color components are retained in each draw mode, so when a
     draw mode is re-entered, red, green, blue, and alpha are reset to the
     last values specified in that draw mode.

     Color component values range from 0, specifying no intensity, through
     255, specifying maximum intensity.  Values that exceed 255 are clamped to
     it.  Values less than 0 are not clamped, and therefore result in
     unpredictable operation.

     It is an error to call RGBcol while the current framebuffer is in color
     map mode.

     The color components of all framebuffers in RGB mode are set to zero when
     gconfi is called.

SEE ALSO
     c, cpack, drawmo, gRGBco, lmcolo, RGBmod

NOTE
     RGBcol can also be used to modify the current material while lighting is
     active (see lmcolo).