Slughorn, Slug font/glyph render lib for OpenGL/OSG/Vulkan/GPU APIs (MIT lic))

Slughorn: Applying Slug-Style GPU Curve Rendering Beyond Text   On March 17th 2026, Eric Lengyel made his Slug technique completely patent-unencumbered ( https://terathon.com/blog/decade-slug.html ) .   As long-time graphics programmers and open source contributors, especially around OpenSceneGraph, VulkanSceneGraph, and related visualization work, we were not going to let that sit untouched for long. On March 19th we started with a few proof-of-concept demos and began digging into the Slug algorithm in detail. Our goal was to take the core idea behind Slug’s high-quality GPU glyph rendering and see how far we could push it outside its original text-rendering use case.[…]