A pure C99 multi-channel signed distance field generator. Handles MSDF bitmap Generation from given ttf/otf font (outlines). Single Header STB-style library
This library is my take on improving msdf-c with some fixes and improving its API
Based on the C++ implementation by Viktor Chlumský.
// example fragment shader
// scale is render_width/glyph_width
// render_width being the width of each rendered glyph
float median(float r, float g, float b) {
return max(min(r, g), min(max(r, g), b));
}
void main()
{
vec3 sample = texture(u_texture, uv).rgb;
float dist = scale * (median(sample.r, sample.g, sample.b) - 0.5);
float o = clamp(dist + 0.5, 0.0, 1.0);
color = vec4(vec3(1.0), o);
}