img2shadertoy

Convert image into Shadertoy script that displays it

• Only Windows .bmp format files are supported as input. Do not use MS Paint to save images since it uses a newer unsupported header format, GIMP etc. should work.

• Redirect output to text file and paste it into Shadertoy.

• Image width must be multiple of 32. For DCT compression the image height must additionally be a multiple of 8.

• Available compression methods:

  • Run-length encoding (RLE)
  • JPEG-like Discrete Cosine Transform (DCT)

• Examples:

  • 1 bit image: https://www.shadertoy.com/view/lsVBzW
    • with RLE: https://www.shadertoy.com/view/MdGfDh
  • 4 bit image: https://www.shadertoy.com/view/4sGBzm
    • with RLE: https://www.shadertoy.com/view/XsKBDh
  • 8 bit image: https://www.shadertoy.com/view/4dyBzm
    • with DCT: https://www.shadertoy.com/view/tsf3D8