Blog - Harold Serrano | Game Engine Developer

A few weeks ago I ran into a frustrating problem in the Untold Engine.

When I first started building the Untold Engine, I was obsessed with adding new features.

A few years ago, while working on the C++ version of the Untold Engine, I made a decision that came back to haunt me: I built my own asset format.

AI is getting very good at writing code.

I spent years thinking that if the rendering was good enough, the engine would speak for itself.

Building a game engine has completely changed the way I think about debugging software.

Building a game engine taught me something unexpected: The hardest part isn’t always writing the renderer, implementing XR support, or optimizing performance.

When I started building the original C++ version of the Untold Engine back in 2013, I focused on building systems from scratch: Rendering Physics Collision Math libraries But there was one engineering practice I completely ignored: Unit Testing.

I implemented SMAA in the Untold Engine hoping it would solve the shimmering and aliasing artifacts I was seeing in large XR scenes on the Apple Vision Pro.

I tried rendering a full archviz bedroom scene on the Apple Vision Pro using the Untold Engine… and while the results looked immersive at first, I started noticing some strange XR rendering artifacts.

This 3D cartoon city contains a large amount of geometry and assets — and today, I wanted to see if the Untold Engine could actually stream it into the Apple Vision Pro in real time.

I rendered an F1 car in real time inside Apple Vision Pro — powered by my custom Swift + Metal renderer, the Untold Engine.

One of the features I wanted to add to the Untold Engine for a long time was remote asset streaming.

This week, while rendering scenes in Vision Pro using the Untold Engine, I realized that scenes were being rendered with the incorrect color space.

This week I came across an unexpected issue.

This week I worked on adding Geometry Streaming to the engine and fixed a flickering issue that had been quietly annoying me for a while.

Hey guys, It’s me again with a new update on the Untold Engine — this time focused on user experience and performance.

Hi guys, Me again with some updates on the status of the Untold Engine.

Hey guys, I’ve been working hard on improving the engine lately—both performance-wise and editor (user-experience) wise.

I’ve been working on the Untold Engine for nearly 12 years.