redstrate.com/content/blog/deepvulkan4/index.md

title	date	draft	tags
Vulkan Deep Dive: CPU & GPU Culling	2022-10-05	true	Vulkan CPlusPlus Deep Dive

Culling is an important part of modern graphics, you definitely don't want anything you aren't looking at wasting valuable resources.

Now wait... what's the purpose of doing it ourselves? I think I read somewhere that GPUs will cull objects itself, and won't try to rasterize them...

Theory

So let's go over that naive approach, and how it doesn't work. Let's take this scene with a lot of McGuire models, which if you don't know are stupidly high poly so thse are perfect for testing.

If you remember, GPUs will check if your triangles are even in the viewport, and will dynamically cull them and prevent them from rasterizing - right?

Implementation