I compiled this for AROS a few years ago.
It does indeed use GL for more than just a display option.
While it was fun/novel playing Alone In The Dark on an Amiga-oid system, thus far the FITD engine is too unstable to bother with any real porting effort to 68k.
As for the Dreamcast, the only time its competitive to *any* P3 is when it comes to FPU performance.
It'd be closer to a low end P2 for interger performance.
