Rendering GUI Glow

[hasty kernel]

Maybe also take a look at the implementation of the glowing effect

Minecraft has a glowing mobeffect, while effected with it, entities glow

I'm not suggesting you use it

[hasty kernel]

I'm suggesting you look to the implementation of that effect to understand how to implement your idea

If you say so 😶

I don't know

I would think they are not

But all Minecraft rendering is 3d

In Minecraft it is

Opengl (Minecraft's rendering engine), only does 3d rendering. Any 2d abstraction is provided by Minecraft itself

Correct

Anyway, that's important, but off topic

I would suggest getting comfortable reading the source code, it's an important skill when no one knows how to solve the problem you are having

Satin can help

But ultimately, the best example of how to code Minecraft is minecraft

Idk

I thought I could help you, but I don' think I can...