What is frustum culling in graphics optimization?

What is frustum culling in graphics optimization?

Frustum culling is a performance optimization technique used in 3D graphics. It involves determining which objects are within the camera's view frustum and only rendering those objects, thus improving rendering efficiency.

How does frustum culling improve performance?

By not rendering objects outside the camera's view, frustum culling reduces the number of draw calls and the amount of geometry processed, leading to better frame rates.

Can you explain how to implement frustum culling in C++?

To implement frustum culling in C++, you typically define the frustum planes based on the camera's projection matrix and then check each object's bounding volume against these planes to determine visibility.

What are the common techniques for bounding volumes?

Common techniques include using bounding boxes (AABB or OBB) and bounding spheres, as they provide a simple way to test for intersection with the frustum planes.