Back to the Basics: Scene Management: Portal/Octree Culling (Mixed Approach)

[freshaca3]

So Portal takes away the polygons that are not going to be seen and Octree divides an object into 8 equally large pieces?

[RamaChannel]

@freshaca3 Not quite, the portal system divides a level logically into rooms, culling any object not visible from the current room (portals are kinda like doors between rooms). The structure can contain other spacial management structures like another portal system or an octree. The octree is a logical structure that divides geometry of an area into 8 child nodes that can be divided into other 8 child nodes, and so on, so only geometry in visible nodes is shown.