On 17 Jun 2011, at 10:30, Stephen Blinkhorn wrote:
Saying that, I've found that the CPU requirements of the raw drawing
code (even with relatively fast refresh rates of 20-25 FPS) pales
into insignificance when compared to the objective-c messaging
overhead of co-ordinating the redrawing. Cocoa seems to need to do a
lot of leg work with respect to view drawing.
Just to clarify that last sentence. I'm referring to the CPU
requirements of drawing relatively simple graphics e.g. bezier paths,
filled rects and some CGLayers (not 10,000 X 10,000 areas of noise!).
Stephen
Anyway, glad I learnt all about CIImage!
Thanks,
Stephen
Cheers,
-- Uli Kusterer
"The Witnesses of TeachText are everywhere..."
http://groups.yahoo.com/group/mac-gui-dev/
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