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Optimizing NSRectFill
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Optimizing NSRectFill


  • Subject: Optimizing NSRectFill
  • From: "Oleg Krupnov" <email@hidden>
  • Date: Fri, 19 Dec 2008 17:37:39 +0200

I'm developing a custom view and noticed that drawRect is becoming
increasingly slow. The Shark has pointed out that the bottleneck is
the NSRectFill function (that calls CGContextFillRect under the hood)
that I use to draw the background of the view. I am disappointed that
such a basic operation could ever impair performance, but it does. It
looks like the bigger is the rectangle, the slower is performance.

I have read the list regarding this issue, but I haven't found any
solution. NSRectFillList, CGContextFillRect do not give any
performance gain.

My question is - is there a way to bypass the advanced path-related
stuff that causes the slow-down, and just get down to some kind of
fast drawing?
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