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Alessandro Mauri
4b6f76b6c8
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2 years ago | |
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sample | 2 years ago | |
.gitignore | 2 years ago | |
Readme.md | 2 years ago | |
msdf.c | 2 years ago | |
msdf.h | 2 years ago | |
stb_truetype.h | 2 years ago |
Readme.md
msdf_c 0.1
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);
}