Re: [Algorithms] ROAM
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From: Thatcher U. <tu...@tu...> - 2002-11-30 18:20:52
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On Nov 29, 2002 at 10:28 -0000, Tom Forsyth wrote: > Four! Four techniques. Ah ah ah ah ah <thunder+lightning> > > (geomipmapping, VIPM, chunks with CPU morph, chunks with GPU morph) > > > Agreed that in real "large world" apps the paging in and out of data > is also a very interesting problem. Though I can't help thinking the > basics of mipmapping (and swizzling, so that a square region is a > single linear access) heightfields should solve half the problem, > and a good async-loading streamer should solve the other half. Does > it need to be any fancier? No, I don't think so. There are also some tradeoffs with whether and how to compress the data. The point is that with modern hardware, the details of HD and RAM storage & paging are crucially important, since any reasonable LOD algorithm can pretty quickly exhaust the data you can fit in RAM. -- Thatcher Ulrich http://tulrich.com |