In my iTunes visualizer, I'm using layers to draw many, many small rectangles (to represent segments of a spectrum analyser display). There can be up to 32 bands x 40 segments x 2 channels = 2,560 segments, all redrawn 30 times per second or more.
One layer is used for one bar, which is 40 rectangles. In my override of -drawInContext: I draw these using NSRectFill() in a loop. Am I right in thinking that using calls such as NSRectFill within a CALayer like this is really making OpenGL calls behind the scenes? If so it's probably going as fast as it can. On my middling iMac it's acceptably fast, but laptops start to show a bit of a slow-down. I can think of ways to optimise this, but first I want to know whether this is truly the fastest way to draw a simple solid rectangle in this situation. If not, what's better? --Graham _______________________________________________ Cocoa-dev mailing list ([email protected]) 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
