Do these Apps utilize Alti-vec?
November 22, 2001 8:04PM
edited January 2014
The QuakeIII engine?
Reply 1 of 7
November 22, 2001 8:13PM
as far as i know
in os x.
Reply 2 of 7
November 22, 2001 8:51PM
Why are my iTunes frame rates so terrible then?
Reply 3 of 7
November 22, 2001 8:53PM
AltiVec isn't used in the visualizer; it's used in the encoder.
Reply 4 of 7
November 22, 2001 8:58PM
BTW, the AltiVec optimizations for Quake III are minimal and pathetic. Graeme Devine (the key id Mac programmer) promised over and over again that the AltiVec optimizations would blow us away and make the Mac the leading Quake III platform with FPS's dusting the PC OCers.
Yeah, right. <img src="graemlins/hmmm.gif" border="0" alt="[Hmmm]" />
Reply 5 of 7
November 23, 2001 7:26AM
Quake III code is the pinnacle of efficiency compared to how unoptomized Return to Castle Wolfenstein is, although RTCW is based on Quake III engine the frame rates are only 1/3 of Quake III.
The PC version of RTCW has been released, the Mac release should be around christmas, btw.
Reply 6 of 7
November 24, 2001 3:52AM
[quote]Originally posted by MajorMatt:
<strong>Why are my iTunes frame rates so terrible then?</strong><hr></blockquote>
OS X has a hard time painting any large area with high frame rates in general, it's not just iTunes.
Unfortunately it affects many more apps than just iTunes, try using the grabby scroll hand in an app like Illustrator to experience true horror.
Reply 7 of 7
November 25, 2001 2:01AM
does iMovie use altivec when rendering? I see that it does when exporting, but, I don't see much difference in rendering between my dual800 OSX.1.1 640RAm and my iMac500 256ram osx.1.1