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| 29-03-08 / 21:40 : Logic 8 Pro perf : targeted to QuartzGL ? (cjed) | Logic Pro 8 performs slower graphically compared with Logic Pro 7 or Express. In fact it seems the this new version has been programmed with QuartzGL in mind, that as stated by ArsTechnica leads to optimization choices that are opposite to what we did with Quartz 2D. Then if we activate QuartzGL on Leopard (through sudo defaults write /Library/Preferences/com.apple.windowserver \QuartzGLEnabled -boolean YES), scrolling under Logic 8 becomes perfectly smooth, as it is with Logic 7 under Tiger. It however requires a graphic card that can manage hardware CoreImage acceleration and QuartzGL (Radeon 9600 Pro min). With a Radeon 9000 Pro Leopard only provides software CoreImage (managed by the G4).
We also note that without QuartzGL, Logic 8 Pro uses (under Leopard) 30 to 40% CPU with MIDI events only (compared with 7% in Logic Express 7 under Tiger), and it drops to 10% if Logic Pro windows are hidden. So QuartzGL should fix this. | | | Comments | | Write a comment | |
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