BSP

Binary space partitioning, or BSP, is a method of organising 3D areas so as to minimise the amount of data sent to a renderer. It only works for environments in which it is not possible to see one part of the environment from another. It is thus used a fair amount, in games where the world is a series of discrete rooms. Use in other VR environments is possible, but only as a subset render for a specific volume, it breaks down otherwise.

BSP works by sub dividing the 3D data. Area A is subdivided into areas B and C, as separate memory blocks, providing that no area of B can be seen from a render of C and vice versa. If one or more of the areas still contains a large number of objects, it will be subdivided again if possible. So, area C becomes areas D and E, providing that no area of D is visible from E, and vice versa.

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Binary Space Partitioning BSP

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