shithub: rgbds

ref: f1c13af703b8ab43a72626df69aba2ae7b73a5e1
dir: /src/gfx/rgbgfx.1/

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.\" Copyright © 2013 stag019 <[email protected]>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd April 17, 2017
.Dt RGBGFX 1
.Os RGBDS Manual
.Sh NAME
.Nm rgbgfx
.Nd Game Boy graphics converter
.Sh SYNOPSIS
.Nm rgbgfx
.Op Fl DfFhPTVv
.Op Fl o Ar outfile
.Op Fl d Ar depth
.Op Fl p Ar palfile
.Op Fl t Ar mapfile
.Op Fl x Ar tiles
.Ar file
.Sh DESCRIPTION
The
.Nm
program converts PNG images into the Nintendo Game Boy's planar tile format.
The arguments are as follows:
.Bl -tag -width Ds
.It Fl D
Debug features are enabled.
.It Fl f
Fix the input PNG file to be a correctly indexed image.
.It Fl F
Same as
.Fl f ,
but additionally, the input PNG file is fixed to have its parameters match the
command line's parameters.
.It Fl d Ar depth
The bitdepth of the output image (either 1 or 2).
By default, the bitdepth is 2 (two bits per pixel).
.It Fl h
Lay out tiles horizontally rather than vertically.
.It Fl o Ar outfile
The name of the output file.
.It Fl p Ar palfile
Raw bytes (8 bytes for two bits per pixel, 4 bytes for one bit per pixel)
containing the RGB15 values in the little-endian byte order and then ordered
from lightest to darkest.
.It Fl P
Same as
.Fl p ,
but the pallete file output name is made by taking the input filename,
removing the file extension, and appending
.Pa .pal .
.It Fl t Ar mapfile
If any tiles are the same, don't place the repeat tiles in the output file, and
make a tilemap file.
.It Fl T
Same as
.Fl t ,
but the tilemap file output name is made by taking the input filename,
removing the file extension, and appending
.Pa .tilemap .
.It Fl u
Truncate repeated tiles. Useful with tilemaps.
.It Fl V
Print the version of the program and exit.
.It Fl v
Verbose.
Print errors when the command line parameters and the parameters in
the PNG file don't match.
.It Fl x Ar tiles
Trim the end of the output file by this many tiles.
.El
.Sh EXAMPLES
The following will take a PNG file with a bitdepth of 1, 2, or 8, and output
planar 2bpp data:
.Pp
.D1 $ rgbgfx -o out.2bpp in.png
.Pp
The following creates a planar 2bpp file with only unique tiles, and its tilemap
.Pa out.tilemap :
.Pp
.D1 $ rgbgfx -T -u -o out.2bpp in.png
.Pp
The following will do nothing:
.Pp
.D1 $ rgbgfx in.png
.Sh SEE ALSO
.Xr rgbds 7 ,
.Xr rgbasm 1 ,
.Xr rgblink 1 ,
.Xr rgbfix 1 ,
.Xr gbz80 7
.Sh HISTORY
.Nm
was created by
.An stag019
to be included in RGBDS.
It is now maintained by a number of contributors at
.Lk https://github.com/rednex/rgbds .