Mesa Software Rasterization (swrast) Data Structures

Here are the data structures with brief descriptions:

atifs_machine	State for executing ATI fragment shader
LineInfo
sw_span	The SWspan structure describes the colors, Z, fogcoord, texcoords, etc for either a horizontal run or an array of independent pixels
sw_span_arrays
SWcontext	Per-context state that's private to the software rasterizer module
swrast_device_driver	The driver interface for the software rasterizer
SWvertex	Data-structure to handle vertices in the software rasterizer

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