I always wonderd how Oxbab got the texture mapping in the Demo Cuzco from Oxygene so fast on a stock A1200 with no fastmem.
Anyway in the comments for that demo a guy called Krishna said the following:-
"Very nice demo, the 3D mapper does not use c2p, the mapper works for quad and writes 4 bitplanes. The 3D also use the blitter, one bitplane is used for each face so you have 6*16 colors. It never runs in the vbl on a standard amiga :)
Oxbab is a good coder but the code used for this prod is not the best code for an amiga 1200 without fast, I've seen a better mapper done by genst/Saturn, an other ex-atari coder... but the code was never seen in any prod"
Can anyone elaborate more on how that works ? There are also a number of linked demos in the comments which could use blitter texture mapping such as Voyage/Razor1911, Blittermiracle/Brainstorm and Cube-o-matic.