1. A computer-implemented method for video coding, comprising: determining, via a dependency module, a variant dependency pattern associated with a plurality of pixel blocks of an active image based at least in part on one or more contexts associated with individual pixel blocks, wherein the determined variant dependency pattern includes a variant set of dependency vectors configured to establish a relationship between a dependent thread and one or more associated threads among a group of computing unit threads associated with the individual pixel blocks; wherein the one or more contexts include a relative location of individual pixel blocks of the active image; wherein the dependency pattern is spatially variant based at least in part on the relative location of individual pixel blocks of the active image; wherein a set of four adjacent pixel blocks of the active image has a maximum of five dependencies for an upper left pixel block, a maximum of four dependencies for an upper right pixel block, a maximum of four dependencies for a lower left pixel block, and a maximum of three dependencies for a lower right pixel block; sequentially dispatching, via a dispatch module, the computing unit threads to individual execution units of a graphics processor based at least in part on the variant dependency pattern; and executing, via the execution units, the dependent thread when the all the associated threads are finished executing.