I finished frustum culling.

You’ve probably seen this feature in some random wannabe gamedevs post on tiktok saying how they “optimized their game” by enabling frustum culling in Unity and calling themselves genius for it. Well it wasn’t as easy as pressing a button for me.

Here’s how it works:

I generate an axis aligned bounding box (AABB) for every object when loaded. Every frame I generate 6 planes for each boundary of the camera, the left, right, bottom, top, near and far planes. Then I also calculate the world position AABB for each mesh, which is just translating the original AABB and making a new one from that’s boundary. From that, it’s actually quite simple to compare if the box is inside the frustum or not, though it’s kinda hard to explain so I won’t bother, but I just run that for every object,
and it basically makes it, so if an object is not inside the camera’s vision, then it just makes it disappear.

I attached the majority of the logic in the second picture