On Apr 11, 2011, at 11:44 AM, John Michael Zorko wrote: > I'm currently using Core Animation to show a 3D rotatable cube with videos > (or other content) on each side, so each side of the cube is an > AVPlayerLayer. What i've read so far seems to say that a special subclass of > CALayer (CAEGLayer) is required for OpenGL to interface with it i.e. if I > wanted to use OpenGL to make a 3D rotating sphere of many AVPlayerLayers (or > as many as an iPad 2 can handle, anyway), is this possible since > AVPlayerLayer doesn't derive from CAEGLayer?
CAEAGLLayers are required to render OpenGL content to a CALayer yes. In order to render to a sphere, you would likely require the ability to render movie frames to a texture, then apply that texture to your sphere. I don't recall if AVFoundation provides support for getting texture data (I think it does, but I haven't used it well enough to know for certain) Basically a CAEAGLLayer is a cross-over point from Core Animation to OpenGL. Other Core Animation content doesn't interact with the content of a CAEAGLLayer anymore than the content of any single CALayer interacts with the content of any other. -- 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
