On Jan 3, 2013, at 12:46 AM, Markus Spoettl <ms_li...@shiftoption.com> wrote:
> Hello, > > I'm having a hard time understanding a problem with CALayer's > -renderInContext: > > I have a custom UIView with custom delegate-drawn sublayers. Almost > everything renders correctly when I do this: > > [[view layer] renderInContext:aContext]; > > (the context is set up correctly and produces the expected result - an > image). But some parts of the original view (which is visible on screen when > rendering) are missing. > > I've been debugging this one for quite a while until I realized that missing > layers are not missing but somehow their zPosition got messed up so they > ended up below another sibling layer. > > Since the affected layers need to be siblings in the same parent layer I > can't fix this by making them sub-layers to enforce the hierarchy. > > Why does this happen and how can I fix it? My best guess would be that -renderInContext: always renders in the same order you get from the -sublayers array, without the zPosition sorting you get on display. This is probably a bug, but your best work around would be to sort the sublayers array yourself rather than relying upon zPosition to do so. -- David Duncan _______________________________________________ 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
