freebsd-dev/usr.bin/vtfontcvt/vtfontcvt.8
Toomas Soome e7fd9688ea Move font related data structured to sys/font.c and update vtfontcvt
Prepare support to be able to handle font data in loader, consolidate
data structures to sys/font.h and update vtfontcvt.

vtfontcvt update is about to output set of glyphs in form of C source,
the implementation does allow to output compressed or uncompressed font
bitmaps.

Reviewed by:	bcr
Differential Revision:	https://reviews.freebsd.org/D24189
2020-06-14 06:58:58 +00:00

90 lines
2.8 KiB
Groff

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.Dd Mar 10, 2020
.Dt VTFONTCVT 8
.Os
.Sh NAME
.Nm vtfontcvt
.Nd "convert font files for use by the video console"
.Sh SYNOPSIS
.Nm
.Op Fl n
.Op Fl f Ar font Ns | Ns Ar source Ns | Ns Ar compressed-source
.Op Fl h Ar height
.Fl o Ar output_file
.Op Fl v
.Op Fl w Ar width
.Ar normal_font
.Op Ar bold_font
.Sh DESCRIPTION
The
.Nm
utility reads source font files in either BDF or Unifont HEX format and
outputs a binary font file, C source, or C source with font data compressed
by using LZ4 compression method.
The output in C source is intended to be used to embed the font into program
binary.
The binary font file is for use by
.Xr vt 4 .
HEX format files must have the file extension
.Pa .hex .
.Pp
The following options are available:
.Bl -tag -width "12345678"
.It Fl f Ar font Ns | Ns Ar source Ns | Ns Ar compressed-source
Specify the output format.
The default is binary
.Ar font
file.
.It Fl h Ar height
Set font height.
The default is 16.
Font height is set automatically for HEX files that have a
.Ql # Height: Ar height
comment before any font data.
.It Fl n
Do not apply output filtering with C source output.
.It Fl o Ar output_file
Specify the name for the output file.
.It Fl v
Display verbose statistics about the converted font.
.It Fl w Ar width
Set font width.
The default is 8.
Font width is set automatically for HEX files that have a
.Ql # Width: Ar width
comment before any font data.
.El
.Sh SEE ALSO
.Xr vidcontrol 1 ,
.Xr vt 4
.Sh HISTORY
The
.Nm
utility first appeared in
.Fx 10.1 .