by the way saw this on the meizu forum:
Translate: Gameloft uses Irrlicht for developing iPhone games.
o__O WHATTTT never knew that
Yeh I noticed this when Sky-Fox uploaded his videos here viewtopic.php?p=266255#p266255
see what banner loads up at 0:40 in the first video?
personally I dont know why GameLoft want to make the switch, but I guess this is only a good thing for the future of irrlicht, provided they give credit or mention it
The results will vary from application to application, depends entirely on how the math functions get used:
the more frequently an app uses heavy maths, the bigger the performance gains
Meizu must have done other optimizations on top of floating point math, which they either dont want to talk about or forgot to mention.
I dont believe using float-optimized maths with standard irrlicht hello-world demo would be enough to result in such a big performance gain, they definitely made other changes to irrlicht source