SDF font atlas generation tool

Atlas generation tool for the font rendering demo.

The algorithm described here.

Mostly for educational purposes since the algorithm is performant enough for generating font atlases at runtime.

Dependencies

GLFW

Usage

Options:
    -h              this help
    -o 'filename'   output file name (without extension)
    -tw 'size'      atlas image width in pixels, default 1024
    -th 'size'      atlas image height in pixels (optional)
    -ur 'ranges'    unicode ranges 'start1:end1,start:end2,single_codepoint' without spaces,
                    default: 31:126,0xffff
    -bs 'size'      SDF distance in pixels, default 16
    -rh 'size'      row height in pixels (without SDF border), default 96
Example:
    sdf_atlas -f Roboto-Regular.ttf -o roboto -tw 2048 -th 2048 -bs 22 -rh 70 -ur 31:126,0xA0:0xFF,0x400:0x4FF,0xFFFF```