Conservative Rasterization Hardware

原文（中文）

A method of rendering primitives is described. Vertex coordinates are converted from floating-point to fixed-point format and triangle primitives having non-zero area prior to the conversion and zero area after the conversion and primitives that have changed from line primitives to point primitives as a consequence of the conversion are identified. A flag is set for each identified primitive and triangle or line primitives that have changed to point primitives as a consequence of the conversion are marked as small objects. Tile lists for each tile in the rendering space are then generated by: for any primitive that is not flagged as a degenerate primitive, using one or more edge calculations to determine whether the primitive overlaps a tile; and for any primitive that is both marked as a small object and flagged as a degenerate primitive, using a conservative bounding box to determine whether the primitive overlaps a tile.