Decoupling Visibility Bins and Render Tile Dimensions for Tiled Rendering

摘要

An apparatus and method are described for decoupling visibility bins and render tile dimensions for tiled rendering. In one embodiment of the invention, a single visibility pass over the scene objects is performed and all the visibility bins are generated in parallel. This allows for high performance when the number of render tiles exceeds the number of visibility bins. The regions upon which visibility testing/recording is done is decoupled from the render tile regions in one embodiment of the invention. This allows a given visibility bin to map to multiple render tiles, thus allowing a fixed number of visibility bins to support any number of render tiles.

主权项

1. A method comprising:
performing a single visibility pass, wherein number of render tiles exceeds number of visibility bins, and wherein at least one of the visibility bins associates with more than one render tile.