12-03-2015, 03:45 PM
Looks like the classic old F-Zero-ish HDMA+Mode7 trick.
Basically it's a 2D plane that lowest row of pixels is 100% width, the one above it a bit smaller, the one above it a bit smaller, etc. These days every toaster can do 3D math and digital displays have no concept of scanlines, so the method this was "really" done isn't realistic, but for legacy and historical purposes you can read more about it at http://www.coranac.com/tonc/text/mode7.htm
Basically it's a 2D plane that lowest row of pixels is 100% width, the one above it a bit smaller, the one above it a bit smaller, etc. These days every toaster can do 3D math and digital displays have no concept of scanlines, so the method this was "really" done isn't realistic, but for legacy and historical purposes you can read more about it at http://www.coranac.com/tonc/text/mode7.htm