On 9 Dec 2013, at 5:36 pm, Jens Alfke <j...@mooseyard.com> wrote: > So if you can avoid it, you shouldn’t be doing your own rendering into > images. I haven’t been following the details of this thread, but my guess is > you’ll get better performance by drawing the tiles directly to the view, just > setting a clipping rect beforehand so the drawing is limited to the tile your > thread is working on. >
Indeed, that’s certainly my intuition too, if only there were a way to do it. Trouble is, each thread needs its own context in order to draw into the view without a lock on every set of context drawing calls, and there’s no way to create such a context that doesn’t have its own bitmap image. The image is only there because it’s the only way to make a context (that I could see - maybe using a PDF context might work, I’ll try that). —Graham _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
