Re: Speeding up image drawing?
Re: Speeding up image drawing?
- Subject: Re: Speeding up image drawing?
- From: Arbit Richardi <email@hidden>
- Date: Tue, 01 Nov 2011 23:19:20 -0700
> I'm pretty certain Preview is using IKImageView, or at least it used to.
Mike, Preview doesn't use IKImageView in 10.6. That class is really
slow, probably because it has a ton of bells and whistles, and it
doesn't show up in the stack frames when I look at Preview in
Instruments (Preview appears to use custom view classes).
> Well, your multiple approaches make me wonder what you mean by "draw"
> but take a look at the graphics context's interpolation quality for scaling. It
> makes a huge difference.
Seth, even the highest quality interpolation looks awful in a lot of
my use cases. It's inferior to drawing directly into a properly sized
hosted layer.
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden