With regards to returning to block 304 (e.g., during a second iteration), the computer may be controlled to identify a second pixel of the tile of the computer image based on the inter-pixel order.

The computer may be controlled to identify one or more locations of the second pixel, to facilitate sampling of the second pixel at the one or more locations of the second pixel (see, e.g., block 306). The identification of the one or more locations of the second pixel may be based on the intra-pixel computational order corresponding to the computer.

According to at least a particular embodiment, the computer is controlled such that the one or more locations of the second pixel is greater in number than the one or more locations of the first pixel. For example, the computer may be controlled such that a number of the one or more locations of the second pixel is an integer multiple of a number of the one or more locations of the first pixel. That is, at the intra-pixel level (or subpixel level), the sampling may occur in stages or iterations.

By way of example, during a first iteration in which the first pixel was identified, only one location (e.g., the location carried by entry 204-0 of the random sequence 202 of FIG. 2) may have been identified for purposes of sampling the first pixel. This iteration may be referred to as a coarse pass that is configured for producing rendering results more quickly.