This time, you will need some kind of an API for main rendering, but doing this is not part of a GUI design. At the end, you don't need to use any sophisticated graphics API at all and you can render ...

Compute GUI launches a full interactive desktop session on a compute or GPU node, configured based on the resource profile you select. This is ideal for running GUI-based applications that require HPC ...

If you are writing your own game, sooner or later you will need some sort of user interface (or graphic user interface = GUI). There are some existing libraries lying around and there are a lot of ...