NSPreferredBackingLocation
NSPreferredBackingLocation
- Subject: NSPreferredBackingLocation
- From: Keith Wilson <email@hidden>
- Date: Sat, 17 Nov 2007 18:26:16 +1100
Hi
Can anyone tell me if the preferred value for
NSPreferredBackingLocation has changed in OS X 10.5.1 for a Textured
window? Does this have anyrhing to do with the Radeon chipset problem?
It seems to me that in 10.5.1 a Textured window defaults to a backing
location of NSWindowBackingLocationMainMemory whereas previously it
was in NSWindowBackingLocationVideoMemory - I no longer have 10.5 so
cannot test it myself.
My main window is Textured so the the user can choose the colour for
the frame and toolbar. Worked fine in Tiger and in Leopard 10.5 but it
redraws too slow in 10.5.1
If I compile for 10.4 then under 10.5.1 the redraw of the main window
is messy (and too slow).
If I compile for a 10.5 target and set the preferred backing store
location to NSWindowBackingLocationVideoMemory then my "Textured" main
window redraws fine, if I set it to NSWindowBackingLocationMainMemory
and it's too slow.
Keith
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