CADisplayLink Mike.
Sent from my iPhone > On 15 Oct 2020, at 20:13, Andreas Falkenhahn via Cocoa-dev > <cocoa-dev@lists.apple.com> wrote: > > I'm drawing inside an NSView by simply setting its layer's contents to a > CGImage which is updated for every frame, e.g. something like this: > > dp = CGDataProviderCreateWithData(NULL, frameBuf, frameBufSize, NULL); > im = CGImageCreate(frameWidth, frameHeight, 8, 32, frameStride, > theColorSpace, (CGBitmapInfo) kCGImageAlphaNoneSkipFirst, dp, NULL, FALSE, > kCGRenderingIntentDefault); > > view.layer.contents = (id) im; > CGImageRelease(im); > CGDataProviderRelease(dp); > > This works fine except that there is no throttle so this will draw as fast as > the CPU allows, which of course is a waste of CPU cycles because the monitor > only refreshes a certain amount of times per second. > > So is there a convenient way to throttle drawing to the monitor's refresh > rate or does this have to be done the hard way by querying the monitor's > refresh rate and then setting up a timer which draws in exactly those refresh > intervals or how should this be done? > > Note that I'd like to avoid using OpenGL or Metal or whatever is the standard > nowadays but I'm mainly interested in an AppKit solution... > > -- > Best regards, > Andreas Falkenhahn mailto:andr...@falkenhahn.com > > _______________________________________________ > > 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/mabdullah%40karelia.com > > This email sent to mabdul...@karelia.com _______________________________________________ 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
