RE: [Algorithms] Terrain performance comparrisons

[Chris B. \(BUNGIE\) <cbu...@mi...>]

> -----Original Message-----
> From: gda...@li...
[mailto:gdalgorithms-
> lis...@li...] On Behalf Of Jonathan Blow
> Sent: Friday, July 25, 2003 2:10 AM
> To: gda...@li...
> Subject: Re: [Algorithms] Terrain performance comparrisons
>=20
> In fact, I am still waiting for people to understand that frame
coherence
> is
> to be avoided in games whenever possible.  I am going to submit a
siggraph
> presentation on that (and some other things) for next year.
>=20
  I would restate that a little. It seems to me that temporal coherence
is extremely important in games, but the nature of the tasks being
performed each frame varies extremely rapidly for anything _related to
rendering the current view_.

  We use temporal coherence successfully in lots of ways in Halo 2, but
not for anything view-dependent. For example all of your simulation
tasks can take great advantage of temporal coherence, as can certain
rendering tasks as well, like recomputing lighting coefficients for
objects. But visibility from frame-to-frame clearly must be computed
from scratch.

--
Chris Butcher
Networking & Simulation Lead
Halo 2 | Bungie Studios
bu...@bu...