asahala / bitcrush

Converts images into C64, Amiga and PC retro lookalikes

Bitcrush

Converts images into C64, Amiga and PC retro lookalikes. See /readme/readme.html or my website for detailed instructions.

GNU General Public License v3.0

Screenmodes

• PC: SVGA, VGA, MCGA, EGA (hires/normal), CGA (composite, RGBI)
• Amiga: HAM8, HAM6, EHB (sliced/normal), OCS (hires/lowres)
• Commodore 64
• Nintendo Gameboy

Requirements

Python 3.4 or newer, Pillow (tested on version 8.1.0).

Examples

bitcrush's Issues

Can't convert PNG transparent

I've been trying to convert some texture files (PNG with transparency) but there's some issues with conversion from transparent pixel to desired pixel recolour.

Theres the script output:

$ python3 main.py -f DOOM2/AGB128_1.png -m CGA
Traceback (most recent call last):
  File "/Users/thx1139/lab/Bitcrush/main.py", line 125, in <module>
    main()
  File "/Users/thx1139/lab/Bitcrush/main.py", line 120, in main
    commandline_process(fname, args)
  File "/Users/thx1139/lab/Bitcrush/main.py", line 93, in commandline_process
    img.adjust(args.adjust[0], args.adjust[1])
  File "/Users/thx1139/lab/Bitcrush/bitcrush.py", line 105, in adjust
    i = ImageEnhance.Brightness(img).enhance(b_factor)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/PIL/ImageEnhance.py", line 36, in enhance
    return Image.blend(self.degenerate, self.image, factor)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/PIL/Image.py", line 3067, in blend
    return im1._new(core.blend(im1.im, im2.im, alpha))
ValueError: image has wrong mode