MULTIRESOLUTION CONSISTENT RASTERIZATION

摘要

A technique for multiresolution consistent rasterization in which a setup unit calculates universal edge equations for a universal resolution. A rasterizer evaluates coverage data for two different resolutions based on the edge equations. The rasterizer evaluates coverage data for different effective pixel sizes—a large pixel size and a small pixel size. Optionally, the rasterizer may determine a first set of coverage data by performing conservative rasterization to determine coverage data for large pixels. Optionally, the rasterizer may then determine a second set of coverage data by performing standard rasterization for small pixels. Optionally, for the second set of coverage data, the rasterizer may evaluate only the small pixels that are within large pixels in the first set of coverage data that evaluate as covered.

主权项

1. A method for rasterizing an object, comprising:
determining a universal resolution that corresponds to a universal grid; calculating universal edge equations based on the universal resolution and data that represent geometry data associated with the object; and determining large pixel coverage data comprising a plurality of covered large pixels based on the universal edge equations and a first resolution.