Tip
Please, before using HeavyGL, we (The HeavyGL developers) strongly recommend reading the wiki (https://github.com/HeavyGL/heavygl/wiki). Otherwise, try to follow some kind of tutorial.
JNI stands for Java Native Interface, basically, a Java API that allows you to use low-level dlls in your project. Which can make rendering faster. Such as what HeavyGL does.
No 😭