Tiled forward shading with improved depth filtering

An image may be divided into tiles, each tile including a multitude of pixels. For each tile, a list of primitive groups that intersect the tile and an initial list of volumes that intersect the tile may be generated. For each primitive group in the list of primitive groups, a per-primitive group list of volumes may be generated. The per-primitive-group list of volumes may include volumes from the initial list of volumes whose depth range overlaps with a depth range of the primitive group. Pixels in the tile which intersect the primitive group may be shaded using the per-primitive-group list of volumes.