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28 lines
808 B
28 lines
808 B
2 years ago
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# msdf_c 0.1
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A pure C99 multi-channel signed distance field generator. Handles MSDF bitmap
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Generation from given ttf/otf font (outlines).
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Single Header STB-style library
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---
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[This library is my take on improving msdf-c with some fixes and improving its API](https://github.com/solenum/msdf-c)
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[Based on the C++ implementation by Viktor Chlumský.](https://github.com/Chlumsky/msdfgen)
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~~~
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// example fragment shader
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// scale is render_width/glyph_width
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// render_width being the width of each rendered glyph
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float median(float r, float g, float b) {
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return max(min(r, g), min(max(r, g), b));
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}
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void main()
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{
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vec3 sample = texture(u_texture, uv).rgb;
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float dist = scale * (median(sample.r, sample.g, sample.b) - 0.5);
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float o = clamp(dist + 0.5, 0.0, 1.0);
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color = vec4(vec3(1.0), o);
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}
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~~~
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