Swizzle, Shuffle, and Splat

Swizzle , Shuffle, and Splat

The various manufacturers refer to the swapping of data values by different terms: swizzle, shuffle, splat, etc. Some of these replicate a data value into two or more destination locations. In a few hybrid cases the functions use a defined distribution or a custom-defined interlacing of source arguments such as was discussed in the previous section.

The splat functionally is similar to a bug hitting the windshield of an automobile at 70 mph.

A bit sequence is used to indicate which source elements are mapped to which destination elements.