https://jk.rubberdax.xyz/tags/harfbuzz/Recent content in Harfbuzz on Jan Kelemen - Personal siteHugoen© [Jan Kelemen](https://www.rubberdax.xyz)Mon, 28 Jul 2025 00:00:00 +0000https://jk.rubberdax.xyz/post/2025-07-28-ligatures-the-final-frontier/Mon, 28 Jul 2025 00:00:00 +0000https://jk.rubberdax.xyz/post/2025-07-28-ligatures-the-final-frontier/<p>Text rendering update for my game engine <a href="https://github.com/jan-kelemen/niku">jan-kelemen/niku</a>, now without missing glyphs.</p> <div style="position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;"> <iframe allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share; fullscreen" loading="eager" referrerpolicy="strict-origin-when-cross-origin" src="https://www.youtube.com/embed/M0Soxc6BoRM?autoplay=0&amp;controls=1&amp;end=0&amp;loop=0&amp;mute=0&amp;start=0" style="position: absolute; top: 0; left: 0; width: 100%; height: 100%; border:0;" title="YouTube video"></iframe> </div> <p>For the demo video, I&rsquo;ve increased the font size; YouTube renders it a bit better than the previous one.</p> <h1 id="the-missing-glyph">The missing glyph</h1> <p>In the previous <a href="https://jk.rubberdax.xyz/post/2025-06-04-text-hates-us">post</a>, I&rsquo;ve shown that the rendering of variable spaced fonts is mostly working. The missing part was ligatures, when multiple letters from the text are combined into a single glyph.</p>https://jk.rubberdax.xyz/post/2025-06-04-text-hates-us/Wed, 04 Jun 2025 00:00:00 +0000https://jk.rubberdax.xyz/post/2025-06-04-text-hates-us/<p>Adding support for text rendering has been one of the things I avoided for a long time in my game engine <a href="https://github.com/jan-kelemen/niku">jan-kelemen/niku</a>.</p> <div style="position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;"> <iframe allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share; fullscreen" loading="eager" referrerpolicy="strict-origin-when-cross-origin" src="https://www.youtube.com/embed/6OVR9dF1lCI?autoplay=0&amp;controls=1&amp;end=0&amp;loop=0&amp;mute=0&amp;start=0" style="position: absolute; top: 0; left: 0; width: 100%; height: 100%; border:0;" title="YouTube video"></iframe> </div> <p>The video is a bit blurry at times, YouTube compression algorithm doesn&rsquo;t like content like this.</p> <h1 id="new-engine-demo">New engine demo</h1> <p>To support text rendering, I&rsquo;ve created a new engine demo, <code>reshed</code>. The intended scope is to get a text editor that can edit GLSL shader files, it derives its name from this intended purpose, <strong>RE</strong>al <strong>SH</strong>ader <strong>ED</strong>itor. There is also a hope that I&rsquo;ll clean up the event handling during its development.</p>