Arm Limited

Robert Elliot

Sean Tristram Ellis

Robin Paul Fell

Andrew Helge Cox

In a graphics processing system, a command list reader first reads-in and identifies a portion of a command list. The primitives corresponding to the commands in the portion of the command list are then subjected to a Z-only processing pass. This allows a Z-bufferand a hierarchical Z-pyramidto be filled with the appropriate Z-values for the primitives in the portion of the primitive list. The primitives are then subjected to a second, normal rendering, processing pass, but the filled Z-bufferand Z-pyramid from the first processing pass are used together with the Z-testsperformed in the second processing pass to determine which primitive should be processed for each sampling point in the second processing pass.

Growing community of inventors

Cambridge, United Kingdom

Robert Elliot