Frustum Rendering in Computer Graphics

A graphics processing method for generating a render output for use in a subsequent render comprising:

• tiling a first view of a scene into a plurality of tiles;
• identifying a first subset of the tiles that are associated with regions of the scene that are viewable in a second view, the second view being a point of view of the subsequent render, and wherein:
• the region of the scene that is viewable in the second view is a view frustum of the second view, and
• the first subset of tiles are identified in dependence on determining the position of the view frustum of the second view from the first view;
• and
• rendering to a render output each of the identified tiles.

A non-transitory computer readable storage medium having stored thereon an integrated circuit definition dataset that, when processed in an integrated circuit manufacturing system, configures the manufacturing system to manufacture a graphics processing system for generating a render output for use in a subsequent render comprising:

• a tiling unit configured to tile a first view of a scene into a plurality of tiles;
• a processing unit configured to identify a first subset of the tiles that are associated with a region of the scene that is viewable in a second view, the second view being a point of view of the subsequent render, and wherein:
• the region of the scene that is viewable in the second view is a view frustum of the second view, and
• the first subset of tiles are identified in dependence on determining the position of the view frustum of the second view from the first view;
• and
• a rendering unit configured to render to a render output each of the identified tiles.