Thanks for all the Core Image tips. Completely missed that somehow. At
the moment I'm drawing a lot of stuff into CGLayers to save redrawing
the same thing over and over. I see CIImage provides imageWithCGLayer:
so this could be very fruitful.
Thanks!
Stephen
On 14 Jun 2011, at 16:07, Quincey Morris wrote:
On Jun 14, 2011, at 14:56, Stephen Blinkhorn wrote:
I'm looking to fill a large custom view with noise. The solution I
have arrived at so far is taking much too long to draw for it to be
useable. Does anyone know any better ways of achieving this in
Cocoa? The basic idea is to add an amount of noise to a base color
pixel by pixel, for example:
Have you looked into using Core Image, e.g. the CIRandomGenerator
filter composited onto an image filled with the base color?
For something trivial (in Core Image terms) like this, there's a
fairly steep learning curve, but the point of Core Image *is*
performance.
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