The editor is built specifically for the engine, it is a bit younger than the engine - the engine is 3+ years old and the editor is 2 yo. Asking a potential question - the editor is built using fyrox-ui library which is made from scratch too.
Sorry for stupid question, but how does it actually draw stuff onto screen? I see lots of GUI abstractions in fyrox-ui/src/lib.rs but I can't find where it actually interacts with the underlying OS. I'm very curious about how GUIs work in general but I am layman. I assume that you have to go through some API to push your graphic buffers onto screen. So something like SDL, OpenGL, or something native to Linux/Windows (Direct Rendering Manager?). Thanks in advance!
I briefly looked at the renderer code, it looks like it's using the "glow" library which is a wrapper that provides common OpenGL API abstraction over OpenGL, OpenGL ES and WebGL.