Methods and Tiling Engines for Tiling Primitives in a Graphics Processing System

A method of generating a display list for a tile of a rendering space, the method comprising:

• receiving a plurality of primitive blocks, each primitive block comprising one or more primitive sections, each primitive section comprising one or more primitives;
• for each primitive section of a received primitive block, determining which primitives of that primitive section fall, at least partially, within the bounds of a tile;
• for each primitive block that comprises at least one primitive that falls, at least partially, within the bounds of the tile, adding information to a display list for the tile that identifies the primitive block;
• for each identified primitive block, adding information to the display list identifying each primitive section of that primitive block that comprises at least one primitive that falls, at least partially within the bounds of the tile;
• and
• for each identified primitive section, adding information to the display list identifying the primitives in that primitive section that fall, at least partially, within the bounds of the tile.

A graphics processing system comprising a tiling engine comprising:

• tiling logic configured to:
• receive a plurality of primitive blocks, each primitive block comprising one or more primitive sections, each primitive section comprising one or more primitives, and
• for each primitive section of a received primitive block, determine whether the primitives of that primitive section fall, at least partially, within the bounds of a tile of a plurality of tiles of a rendering space;
• and
• a display list generator configured to:
• for each primitive block that comprises at least one primitive that falls, at least partially, within the bounds of the tile, add information to a display list for the tile that identifies the primitive block,
• for each identified primitive block, add information to the display list identifying each primitive section of that primitive block that comprises at least one primitive that falls, at least partially, within the bounds of the tile, and
• for each identified primitive section, add information to the display list identifying the primitives in that primitive section that fall, at least partially, within the bounds of the tile.