pngtopi1 [OPTIONS] <input> [<output>]

When creating Degas image the <input> image resolution is used to select the <output> type.

• PI1 / PC1 images are 320x200x16 colors
• PI2 / PC2 images are 640x200x4 colors
• PI3 / PC3 images are 640x400x2 monochrome (black and white)

• If <output> is omitted the file path is created automatically.
• If the --same-dir option is omitted the output path is the current working directory. Otherwise it is the same as the input file.
• The filename part of the <output> path is the <input> filename with its dot extension replaced by the output format natural dot extension.

• If --pix or --pcx is specified the <output> is respectively a raw (PI?) or RLE compressed (PC?) Degas image whatever the <input>.
• If <input> is a PNG image the default is to create a PI? image unless a provided <output> suggest otherwise.
• If <input> is a Degas image the default is to create a PNG image unless a provided <output> suggest otherwise.
• If pngtopi1 detects a discrepancy between a provided <output> filename extension and what is really going to be written then it issues a warning but still process as requested. Use -q to remove the warning.

• The X parameter decides if a Degas image will use 3 or 4 bits per color component. The consequence might be the lost of a precious colormap entry in some (rare) cases if the provided input image was not created accordingly.

• The Y parameter picks the method used to upscale 3/4 bits color component to 8 bits.

  Y	Name	Description	Example
  z	Zero-fill	Simple Left shift	$5 -> 3:$40 4:$50
  r	Replicated	Replicate left bits	$5 -> 3:$49 4:$55
  f	Full-range	Ensure full range	$5 -> 3:$48 4:$55

make D=0

Or alternatively have a look at the _build directory:

cd _build/i686-w64-mingw32
../compile