1. A system for classifying pixels, comprising: retrieval logic; a pixel storage allocation including a plurality of pixel slots, each pixel slot being associated individually with a pixel, where the retrieval logic is configured to cause the pixels to be allocated into the pixel slots in an input sequence; pipelined processing logic configured to output, for each of the pixels, classification information associated with the pixel; and scheduling logic configured to control dispatches from the pixel slots to the pipelined processing logic, where the scheduling logic and pipelined processing logic are configured to act in concert to generate the classification information for the pixels in an output sequence that differs from and is independent of the input sequence, such that for a later pixel which is allocated into its pixel slot later than an earlier pixel is allocated into its pixel slot, the pipelined processing logic generates the classification information for the later pixel sooner than for the earlier pixel.