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gfx: Add mirrored tile check when generating tilemap

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Quint Guvernator
2019-05-19 20:16:47 +02:00
parent b2c1f6122e
commit 21aea281bd
7 changed files with 298 additions and 60 deletions
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51
src/gfx/rgbgfx.1
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@@ -13,11 +13,12 @@
.Nd Game Boy graphics converter
.Sh SYNOPSIS
.Nm rgbgfx
.Op Fl DfFhPTVv
.Op Fl ADfFhmPTuVv
.Op Fl o Ar outfile
.Op Fl a Ar attrmap
.Op Fl d Ar depth
.Op Fl p Ar palfile
.Op Fl t Ar mapfile
.Op Fl t Ar tilemap
.Op Fl x Ar tiles
.Ar file
.Sh DESCRIPTION
@@ -47,6 +48,19 @@ The input image may not contain more colors than the selected bit depth
allows. Transparent pixels are set to palette index 0.
.Sh ARGUMENTS
.Bl -tag -width Ds
.It Fl a Ar attrmap
Generate a file of tile mirroring attributes for OAM or (CGB-only) background
tiles. For each tile in the input file, a byte is written representing the
dimensions that the associated tile in the output file should be mirrored.
Useful in combination with
.Fl m
to keep track the mirror direction of mirrored duplicate tiles.
.It Fl A
Same as
.Fl a ,
but the attrmap file output name is made by taking the input filename, removing
the file extension, and appending
.Pa .attrmap .
.It Fl D
Debug features are enabled.
.It Fl f
@@ -61,6 +75,12 @@ The bit depth of the output image (either 1 or 2).
By default, the bit depth is 2 (two bits per pixel).
.It Fl h
Lay out tiles horizontally rather than vertically.
.It Fl m
Truncate tiles by checking for tiles that are mirrored versions of others and
omitting these from the output file. Useful with tilemaps and attrmaps together
to keep track of the duplicated tiles and the dimension mirrored. Tiles are
checked for horizontal, vertical, and horizontal-vertical mirroring. Implies
.Fl u .
.It Fl o Ar outfile
The name of the output file.
.It Fl p Ar palfile
@@ -74,17 +94,24 @@ Same as
but the palette file output name is made by taking the input PNG file's
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 Ar tilemap
Generate a file of tile indices. For each tile in the input file, a byte is
written representing the index of the associated tile in the output file.
Useful in combination with
.Fl u
or
.Fl m
to keep track of duplicate tiles.
.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
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.
Truncate tiles by checking for tiles that are exact duplicates of others and
omitting these from the output file. Useful with tilemaps to keep track of the
duplicated tiles.
.It Fl V
Print the version of the program and exit.
.It Fl v
@@ -105,6 +132,14 @@ The following creates a planar 2bpp file with only unique tiles, and its tilemap
.Pp
.D1 $ rgbgfx -T -u -o out.2bpp in.png
.Pp
The following creates a planar 2bpp file with only unique tiles (accounting for
tile mirroring) and its associated tilemap
.Pa out.tilemap
and attrmap
.Pa out.attrmap :
.Pp
.D1 $ rgbgfx -A -T -m -o out.2bpp in.png
.Pp
The following will do nothing:
.Pp
.D1 $ rgbgfx in.png