A C# template project that makes drawing stuff to the screen (almost) as simple as Processing.
This combines Silk.NET's High-Level Utilities with SkiaSharp to provide a simple way to draw to the screen.
All the OpenGL is abstracted away in the GPU class, so you can focus on drawing stuff in the NotProcessing class.
This is not a library, but rather just a template project. You have to edit the NotProcessing.cs file itself to draw things.
The Canvas
property there is what you'll mostly use to do the actual drawing on.
Oh, and you'll probably also want to remove the example drawing stuff from there.
This should be cross-platform, but I've only tested it on Linux.