I’ve recently taken an interest in the demoscene, and so I’ve written a few demos for fun. They’re written in C++ and have Perlin noise, ordered Bayer dithering, colour quantization, and a basic CPU 3D rasterizer.

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I participated in Ubisoft NEXT 2026. I didn’t end up finishing because I didn’t take it very seriously until it was too late, but I wrote a small linear algebra library and a pretty neat renderer with the API they provided, and it could load Quake 2 models. The main issue with the code I did write was that it was underdocumented, but I was able to at least structure it well.

This project embeds a WebAssembly runtime into Minecraft, and also renders a framebuffer into the world as blocks. I wrote a couple Python scripts to find the average colour of each block texture in the game, and then map block names to a list of colours in a palette. The guest program can swap the palettes and write to the framebuffer however it pleases, which is enough to run DOOM’s main menu. Had I figured out a good way to implement user input, the game would have been fully playable within Minecraft. It uses a datapack containing the palettes and program. Additionally, I had to write a script to dump DOOM’s palette data so I could use it in the mod.

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The actual rasterizer was lacking because I never got texture mapping working correctly, but I gained a substantial understanding of how to work with serial, interrupts, the GDT, and BIOS calls.

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Someone dared me to visualize sorting a billion numbers, so I came up with this visualization that I think is pretty neat. The “expected” X and Y of a number given that the list is sorted determine the red and blue of the pixel, so you get a nice smooth gradient at the end.

GitHub

Chifir Engine was my second game engine project. I wrote it without using the C runtime or C++ STL and very few outside libraries. I never really reached the point of it being anything close to an engine, but I designed and partly implemented an RHI, and a basic SIMD math library.

After a certain point it was more of an exercise in writing support code and platform glue than an engine, but I learned a lot from it. I gained a much better understanding of abstraction and SIMD from it.

Purpl Engine is my first game engine project. It went through several revisions stretching as far back as 2019, before I moved on to other projects. The final revision had a basic renderer with Vulkan, Direct3D 12, and OpenGL backends, and could do basic lighting. It supported Windows, Linux, and Nintendo Switch.

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This is a demo of it running on my modded Switch.

A long time ago, I wrote a simple program that would fetch the Minecraft server JAR for the latest snapshot release, so I wouldn’t have to do it myself.

GitHub