A reconstruction filter is then employed to extrapolate the appearance of the unrendered parts of the scene, with the final image then being presented to the viewer as (theoretically) the same as if it had been rendered natively at the target resolution.
[2] A similar technique was used in the 1993 video game Doom, which had a "low detail" mode that only rendered every other column of pixels to improve performance.
[3][4] Checkerboarding also bears a resemblance to interlaced video, where every frame is split into two fields, also halving the amount of pixels that has to be rendered or transferred.
Though the technique is usually employed with the goal of reducing the computational resources required to render a scene at higher resolutions, it can also be used as a form of anti-aliasing, with Rainbow Six: Siege being one of the games to use it in this manner.
[6] Though the technique does not require any specific hardware support outside of the normal for games produced in this era, the PlayStation 4 Pro included specialised hardware to enable checkerboard rendering to be carried out with much less of a performance loss than might otherwise be the case.