code bloat [was Re: Semaphore assembly-code bug]
ajax at nwnk.net
Mon Nov 1 15:47:46 PST 2004
On Monday 01 November 2004 18:38, Kendall Bennett wrote:
> Adam Jackson <ajax at nwnk.net> wrote:
> > Backing store and XAA are mutually exclusive. If you do an
> > XAA-accelerated operation to a region with a backing store, then
> > you invalidate the backing store. Woops.
> > XAA goes to a lot of effort to accelerate the primitives no one
> > uses, and desperately needs to be taken out behind the barn and
> > shot. KAA accelerates probably a tenth of the ops XAA
> > accelerates, but they're the right tenth so the code is simpler
> > and the performance way better.
> KAA? Is that the new driver model that Keith was working on, or something
> else? Where do I find more information on this.
Yes, it's the AA in kdrive.
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