An update on one of my two questions:
On Feb 25, 2009, at 3:32 PM, Christopher Ashworth wrote:
I have run into two fairly serious performance issues.
Issue 1: Performance on a PPC machine drops off a cliff. PPC
machines that could play videos smoothly in the old version have
unusable framerates on the new version. To the best of my belief,
the only significant difference between the two (as far as video
playback is concerned) is simply that the frames are being rendered
with QC in the new version. Is there a known performance hit for
Quartz Composer on PPC hardware? Is there some kind of optimization
flag I need to set to target a build for PPC? I don't yet have PPC
hardware to test on, so can't yet investigate directly. I'm trying
to scrounge up some hardware now; I wasn't expecting to hear of
factor-of-ten (or more!) type slowdowns from the PPC crowd.
I finally got my hands on a PPC machine and have discovered that this
was not a Quartz Composer issue at all. I had forgotten one other
change I had made between the two versions: I am using a custom
QuickTime clock component to synchronize all my QT movies. For some
as yet unknown reason this is leading to extremely slow playback on
the PPC machine. But the rendering process with QC on the PPC machine
remains nice and fast.
Best,
Chris
_______________________________________________
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]
