This is a toy Minecraft client that I'm using to learn OpenGL. I have no experience, so this is probably really bad.
This makes use of the Minecraft assets stored in the 1.13.2 jar.
Copy the 1.13.2.jar, bin/blocks.json, bin/shaders, and mclib.dll over to the folder with terracotta.exe for it to work correctly.
It can currently connect to Minecraft servers and attempts to render blocks.
Basic rendering - Renders most basic blocks. Entities are rendered with a black box.