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Re: Cocoa graphics speed

Subject: Re: Cocoa graphics speed
From: Douglas Davidson <email@hidden>
Date: Mon, 29 Sep 2003 16:26:48 -0700

On Monday, September 29, 2003, at 03:54 PM, Alastair J.Houghton wrote:

One way to speed up your code would be to create a real NSBezierPath for the rectangle, and keep the path itself around.

Are you sure? I'm pretty certain that NSRectFill() is faster than using an NSBezierPath to draw the same rectangle, even if you don't create the NSBezierPath every time.

You can get quite a good performance increase (about 10 times) by using NSRectFillList() rather than NSRectFill(), assuming that it's possible to sort the rectangles by colour. If it isn't possible to do that, then NSRectFillListWithColors() is still faster than NSRectFill() by a fair margin.

At this level of optimization it might also be worthwhile to consider using CG operations directly.

Douglas Davidson
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References:
	>Re: Cocoa graphics speed (From: "Alastair J.Houghton" <email@hidden>)

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