Overlapping visibility and render passes for same frame

A processing device comprising:

• memory;
• and
• a processor configured to:
• receive an image comprising one or more three dimensional (3D) objects;
• execute a visibility pass for determining locations of primitives of the image;
• execute, concurrently with the executing of the visibility pass, front end geometry processing of one of the primitives determined, from the visibility pass, to be in a first one of a plurality of tiles of the image;
• and
• execute, concurrently with the executing of the visibility pass, back end processing of the one primitive in the first tile.

A non-transitory computer readable medium comprising instructions for causing a computer to execute a method of method of tiled rendering of an image for display comprising:

• receiving an image comprising one or more three dimensional (3D) objects;
• executing a visibility pass for determining locations of primitives of the image;
• executing, concurrently with the executing of the visibility pass, front end geometry processing of one of the primitives determined, from the visibility pass, to be in a first one of a plurality of tiles of the image;
• and
• executing, concurrently with the executing of the visibility pass, back end processing of the one primitive in the first tile.