If it weren't you couldn't drag around a solid window without any lag/flicker.
There are many more issues involved than simple hardware graphics acceleration.
OS X is forcing processes to give up time to let other things happen whether they like it or not.
Its simply the price you pay for preemption.
VPC probably isn't using all of the available features of Mac OS X to run as fast as possible - the comments that iTunes uses hidden APIs is simply another CYA statement.
mach-O carbon apps have FULL access to all of Mac OS X so they can use UNIX-like threading if they want or use MP tasks that run preemptively to the main thread to do heavy calculations. And with protected memory they could make use of massive caches for translated code or whatever.
The last "we cant ship on time" excuse was that Mac OS X lacked enough developer tools.
Next it will be some bug that only VPC encounters that makes it run so slowly.
Comments
If it weren't you couldn't drag around a solid window without any lag/flicker.
There are many more issues involved than simple hardware graphics acceleration.
OS X is forcing processes to give up time to let other things happen whether they like it or not.
Its simply the price you pay for preemption.
VPC probably isn't using all of the available features of Mac OS X to run as fast as possible - the comments that iTunes uses hidden APIs is simply another CYA statement.
mach-O carbon apps have FULL access to all of Mac OS X so they can use UNIX-like threading if they want or use MP tasks that run preemptively to the main thread to do heavy calculations. And with protected memory they could make use of massive caches for translated code or whatever.
The last "we cant ship on time" excuse was that Mac OS X lacked enough developer tools.
Next it will be some bug that only VPC encounters that makes it run so slowly.