Graphics tiling architecture with bounding volume hierarchies

摘要

In some embodiments, tile lists may be avoided by storing the geometry of a scene in a bounding volume hierarchy (BVH). For each tile, the bounding volume hierarchy is traversed. The traversals continued only into children nodes that overlap with the frustum on the tile. By relaxing the ordering constraint of rendering primitives, the BVH is traversed such that nodes that are closer to the viewer are traversed first, increasing the occlusion culling efficiency in some embodiments. Rendering the full scene between the central processing cores and the graphics processor may be done through a shared memory in some embodiments.

主权项

1. A method comprising:
storing, using a computer processor, scene geometry in a bounding volume hierarchy; traversing the bounding volume hierarchy for each tile of a plurality of tiles; continuing the traversal only into child nodes that overlap with a frustum of a tile; and performing back-end rasterization when a leaf node is reached.