Rendering Algorithms

• Added rapid motion rendering algorithm, now renamed to the rasterizer, that performs efficient motion blurring by shading geometry at a single point in time, and caching and re-using the results at multiple points that the object moves across. It is enabled with the scanline rapid statement in the options, or the -scanline rapid command-line option. A new samples collect option statement controls second-stage sample compositing.
• Implemented scene data swapping to disk, effectively extending available memory by a region on disk. It is enabled and set up with the -swap_dir and -swap_limit command-line arguments.
• The state variable is now interpolated from explicit motion vectors (but not motion transformations) if motion blurring is turned off.
• Shadowmap files now contain extra information at the end of the regular depth data that defines a coordinate system for reloading the shadow map into a different scene.