shithub: rgbds

ref: 42b5be24b42a6bae11c68751146d9981aadc459d
dir: /src/gfx/rgbgfx.1/

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.Dd $Mdocdate$
.Dt RGBGFX 1
.Os RGBDS Manual
.Sh NAME
.Nm rgbgfx
.Nd Game Boy graphics converter
.Sh SYNOPSIS
.Nm rgbgfx
.Op Fl DfFhPTv
.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
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.