Graphics processing

A graphics processor comprising:

• processing circuits configured to execute a tile-based graphics processing pipeline to generate an output, the graphics processing pipeline being executed comprising:
• a sequence of one or more geometry processing stages to perform geometry processing;
• a binning stage that generates data structures for identifying geometry to be processed for respective rendering tiles of a render output being generated;
• and
• a rendering stage for rendering tiles of a render output being generated;
• wherein:
• some of the geometry processing of the sequence of one or more geometry processing stages of the graphics processing pipeline being executed can be deferred until the rendering stage for geometry being processed;
• the graphics processor further comprising:
• a processing circuit configured to, when the graphics processor is generating a render output:
• track, for each region of a plurality of regions that the render output has been divided into, an amount of geometry processing to be performed at the rendering stage for the region;
• and
• when the amount of geometry processing to be performed at the rendering stage for a region reaches a threshold value, trigger the rendering of geometry for the region.

A non-transitory computer readable storage medium storing computer software code which when executing on at least one processor, performs a method of operating a graphics processor when executing a tile based graphics processing pipeline to generate an output, the graphics processing pipeline being executed comprising:

• a sequence of one or more geometry processing stages to perform geometry processing;
• a binning stage that generates data structures for identifying geometry to be processed for respective rendering tiles of a render output being generated;
• and
• a rendering stage for rendering tiles of a render output being generated;
• wherein:
• some of the geometry processing of the sequence of one or more geometry processing stages of the graphics processing pipeline being executed can be deferred until the rendering stage for geometry being processed;
• the method comprising:
• when generating a render output:
• for each region of a plurality of regions that the render output has been divided into, tracking an amount of geometry processing to be performed at the rendering stage for the region;
• and
• when the amount of geometry processing to be performed at the rendering stage for a region reaches a threshold value, triggering the rendering of geometry for the region.