Okay, I have it working now. Seems like I had to reboot (or log out) for the option change to take effect.
But the speedup still isn't as much as I'd like - even with small images going through the filters it can only get up to 110-120 fps full screen and about 250 in a small window. However, if I disable the billboard (there's just one which pastes the output from the accumulator to the whole window) then it jumps up to about 900. Which I guess means that pasting to the display is the bulk of the work, so I need to only display about one frame in ten if I want to get it as fast as possible - do you know if there's any way to do that in QC, or will it mean going the thin app route? (I tried an iterator but they don't work with accumulators as there's no way to get the output back into the input. I can copy and paste the Core Image kernel so that it's applied several times per frame, which works quite well but I have to do it all over again if I change anything. Attaching an LFO to the billboard's enable input didn't do the job either) Thanks very much for your help Nathaniel On 14/03/2008, Christopher Wright <[EMAIL PROTECTED]> wrote: > > > I've just installed Leopard and tried this, but I'm not getting the > > speed up I was hoping for. Although diasbleVBLSyncing is enabled > > and I've restarted QC, the frame rate is still roughly in multiples > > of 60 and the speed is the same as before even if I put the > > resolution right down. Is it possible that there could be a bug in > > (for example) the Core Image Accumulator or Kernel patch which > > causes it to only update once per VBL even when syncing is > > disabled? Or is there something else I can do? > > > > If your viewer window is occluded, you'll get about 60fps (this is how > the Quartz compositing engine works I guess? It's a window manager > thing, not a QC bug). If your window isn't occluded, try some tests > to see if the filters are causing the performance hit. >60fps is both > possible and common, even with the patches you mentioned. For example: > > > > > Make sure your images to the filters aren't huge, that affects > performance much more than the final viewer window's size. > > -- > [ christopher wright ] > [EMAIL PROTECTED] > http://kineme.net/ > > > >
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