Please take a look at the screenshot below, from the old classic Space Harrier. My question regards the curved perspective on the chequerboard 'ground'. It's got a strangely curved geometry (I remember seeing this in a few old games/demos). I reminds me somewhat of a moire effect, and I think some of it (in the background) is just that - but I don't think its the full story. Compare with the screen shot from the Sega version, which shows moire effects in the distance, but not the same curvature.
- Why the curvature?
- Did they do this on purpose, or is it a side effect of some technique?
- How is it achieved?