Funnily enough, I have managed to get generative mesh stuff working with an Iterator and OpenCL, with different coloured mesh per-Mesh Renderer instance. It's not as fast as I would like, but since it uses OpenCL, there's not way to compare with QC 3.
a|x --- On Wed, 4/11/09, George Toledo <[email protected]> wrote: > From: George Toledo <[email protected]> > Subject: Re: iterator performance > To: "Christopher Wright" <[email protected]> > Cc: "quartzcomposer-dev list list" <[email protected]> > Date: Wednesday, 4 November, 2009, 20:12 > I'm getting the same basic fps results > using the same hardware to test both qtz's - performance > is pretty much halved in SL (as in, half as fast). I could > post more examples, but you've covered it. > > I haven't found any scenarios where the new > iterator is quicker, and the iterator also always seems to > be a problem patch in scenarios where other things break, > though it may just be coincidence. > > Off the top of my head, iterator+shadows are a no-go, > iterator + mesh creator results in the color values from the > mesh creator getting broken (still need to file bug > officially), and a particular queue+iterator thing that > worked for me in 10.5 no longer works. This could all be > side issues to this performance problem, but when taken > together, it makes me dubious about the new iterator, in > general. > > -George Toledo > > On Wed, Nov 4, 2009 at 2:48 PM, > Christopher Wright <[email protected]> > wrote: > > <puts on asbestos suit ;)> > > I'm finding a lot of cases where iterator performance > in QC4 is dramatically worse than in QC3 (typically about > half as fast). > > > > > (this does a 50x50 grid, with half the sprites disabled, > so it's 2500/2 = 1250 sprites per frame -- MacBook can > render this at 60fps in Leopard, MacBook Pro is struggling > to hit 30fps in Snow Leopard.) > > > > > (this one's iteration count is cranked up really > high, but it's still ~5fps on my MacBook 1.83GHzGMA950 > running 10.5.8, and only 2.2-2..5fps on my MacBook Pro 2.4GHz > 8600M GT running 10.6.x (the MacBook on Snow Leopard also > hits about 2.5fps, so the same machine is half as fast in > iterators). Turning down the iteration count makes it > scale up, with 10.5 always running about 2x as fast as > 10.6). > > > > > Is this expected? Does anyone else experience this kind > of performance? Are there cases where iterators are > actually faster (or at least as fast) on Snow Leopard? > I'm only seeing a few cases where having all consumer > subpatches get disabled causes snow leopard's iterator > to skip work (unlike leopard's). Should I file a bug > for this? > > > > > -- > > [ christopher wright ] > > [email protected] > > http://kineme.net/ > > > > > _______________________________________________ > > Do not post admin requests to the list. They will be > ignored. > > Quartzcomposer-dev mailing list ([email protected]) > > Help/Unsubscribe/Update your Subscription: > > http://lists.apple.com/mailman/options/quartzcomposer-dev/gtoledo3%40gmail.com > > > > This email sent to [email protected] > > > > -----Inline Attachment Follows----- > > > _______________________________________________ > Do not post admin requests to the list. They will be > ignored. > Quartzcomposer-dev mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/quartzcomposer-dev/the_voder%40yahoo.co.uk > > This email sent to [email protected] _______________________________________________ Do not post admin requests to the list. They will be ignored. Quartzcomposer-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/quartzcomposer-dev/archive%40mail-archive.com This email sent to [email protected]
