Re: iBook and playing DVDs
On Sun, 2002-05-19 at 22:01, Albert D. Cahalan wrote:
> Benjamin Herrensch writes:
> > [somebody]
>
> >> Maybe we could even have the chip display the overlay out
> >> of AGP memory directly?
> >
> > ATI doesn't recommend that. The refresh rate of the screen is
> > high enough that if you display from AGP memory, you'll cause
> > a hell lot more throughput on the bus than with a single blit.
I'm sure Rogério wouldn't mind loading the bus more in favour of the
CPU. :) But anyway, limiting bus traffic to one transfer per frame
shouldn't be hard either.
> ATI wouldn't likely recommend uncached/guarded or not using
> the hardware IDCT either though.
>
> If this has any chance of getting me 1600x1024 at 24-bit on
> my Mac Cube, then I like it.
The bandwidth between the chip and its video RAM matters for this, the
bus bandwidth only limits the size or fps of the video images.
--
Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member / CS student, Free Software enthusiast
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