Occlusion Culling is a feature that disables rendering of objects when they are not currently seen by the camera because they are obscured (occluded) by other objects. ... Occlusion culling removes additional objects from within the camera rendering work if they are entirely obscured by nearer objects.

What is occlusion culling?

Occlusion culling increases rendering performance simply by not rendering geometry that is outside the view frustum or hidden by objects closer to the camera. Two common types of occlusion culling are occlusion query and early-z rejection.

Does occlusion culling increase FPS?

Level 3: The BIG Picture. Indeed, occlusion culling can help you improve your frame-rate. But there are more things to keep in mind, such as general rendering cost, physics, scripting, AI, audio, shader cost, etc.. Dealing with so many performance areas in game development quickly gets overwhelming.