How can you set the resolution in scenekit?I would like to render the scenekit view at half the resolution and then scale it up. (I'm hoping this will give a performance boost to my game at the cost of non retina graphics)

I need to run sceneView.projectPoint a couple of 100 times in a loop, it freezes my app regularly... not always. Sometimes it freezes for a second sometimes for 10 seconds.Any ideas?

My app is using ARKit and Scenekit to render some animation for user interaction, at some points, it hangs with the below thread backtrace Anyway to tell what is blocking the main thread? (lldb) thread backtrace thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP frame #0: 0x00000001b1dd5204 libsystem_kernel.dylib`__psynch_mutexwait + 8 frame #1: 0x00000001cf935224 libsystem_pthread.dylib`_pthread_mutex_firstfit_lock_wait + 92 frame #2: 0x00000001cf935174 libsystem_pthread.dylib`_pthread_mutex_firstfit_lock_slow + 216 frame #3: 0x00000001b821e560 SceneKit`-[SCNRenderer _projectPoint:viewport:] + 220 frame #4: 0x00000001b82c8438 SceneKit`-[SCNView projectPoint:] + 124 frame #5: 0x000000010477d970 app`static OffScreenIndicator.updateOffScreenOn(displayView=0x00000001071c2b30, sceneView=0x00000001071d5820, target=0x0000000281a3c700, image=0x0000000281411050, color=0x0000000283c3d4c0, frame=0x000000015683e340, self=app.OffScreenIndicator) at OffScreenIndicator.swift:26:37 frame #6: 0x000000010458d5d8 app`ARViewController.phoneIsFar(camPosition=SceneKit.SCNVector3 @ 0x000000016db94730, frame=0x000000015683e340, isTutorial=true, self=0x000000010883bc00) at ARViewController.swift:2434:48 frame #7: 0x000000010458a0b4 app`ARViewController.scanUpdate(frame=0x000000015683e340, showTutorial=true, scanAllDoneAction=0x000000010459300c app`partial apply forwarder for closure #1 () - () in app.ARViewController.(stateUpdate_tutorial in _ED82BCD2A98A9516DA8B452F58022553)(frame: __C.ARFrame) - () at compiler-generated, self=0x000000010883bc00) at ARViewController.swift:2371:13 frame #8: 0x0000000104560e14 app`ARViewController.stateUpdate_tutorial(frame=0x000000015683e340, self=0x000000010883bc00) at ARViewController.swift:2692:9 frame #9: 0x00000001045609f4 app`implicit closure #22 in implicit closure #21 in ARViewController.bindStateFunctions(frame=0x000000015683e340, self=0x000000010883bc00) at ARViewController.swift:1048:34 frame #10: 0x00000001045506fc app`ARViewController.updateState(frame=0x000000015683e340, self=0x000000010883bc00) at ARViewController.swift:1108:31 frame #11: 0x0000000104550274 app`ARViewController.session(session=0x00000001568cbdd0, frame=0x000000015683e340, self=0x000000010883bc00) at ARViewController.swift:696:9 frame #12: 0x0000000104550778 app`@objc ARViewController.session(_:didUpdate:) at compiler-generated:0 frame #13: 0x00000001afa25248 ARKitCore`__36-[ARSession _sessionDidUpdateFrame:]_block_invoke + 128 frame #14: 0x0000000106f37bcc libdispatch.dylib`_dispatch_call_block_and_release + 32 frame #15: 0x0000000106f396c0 libdispatch.dylib`_dispatch_client_callout + 20 frame #16: 0x0000000106f48f34 libdispatch.dylib`_dispatch_main_queue_callback_4CF + 1000 frame #17: 0x0000000183e0111c CoreFoundation`__CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 16 frame #18: 0x0000000183dfb120 CoreFoundation`__CFRunLoopRun + 2508 frame #19: 0x0000000183dfa21c CoreFoundation`CFRunLoopRunSpecific + 600 frame #20: 0x000000019b9c4784 GraphicsServices`GSEventRunModal + 164 frame #21: 0x000000018683aee8 UIKitCore`-[UIApplication _run] + 1072 frame #22: 0x000000018684075c UIKitCore`UIApplicationMain + 168 frame #23: 0x00000001022766b4 app`main at AppDelegate.swift:14:7 frame #24: 0x0000000183aba6b0 libdyld.dylib`start + 4 (lldb) (lldb) thread list Process 4264 stopped thread #1: tid = 0x131e7b, 0x00000001b1dd5204 libsystem_kernel.dylib`__psynch_mutexwait + 8, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP thread #6: tid = 0x131f75, 0x00000001b1db12d0 libsystem_kernel.dylib`mach_msg_trap + 8, name = 'com.apple.uikit.eventfetch-thread' thread #9: tid = 0x131f7e, 0x00000001b1db12d0 libsystem_kernel.dylib`mach_msg_trap + 8, name = 'AVAudioSession Notify Thread' thread #11: tid = 0x131ffc, 0x00000001b1db12d0 libsystem_kernel.dylib`mach_msg_trap + 8, name = 'com.apple.NSURLConnectionLoader' thread #14: tid = 0x132099, 0x00000001b1db12d0 libsystem_kernel.dylib`mach_msg_trap + 8, name = 'com.apple.coreaudio.AQClient' thread #21: tid = 0x1320d9, 0x00000001cf938764 libsystem_pthread.dylib`start_wqthread thread #27: tid = 0x132153, 0x00000001b1db12d0 libsystem_kernel.dylib`mach_msg_trap + 8, name = 'com.apple.CoreMotion.MotionThread' thread #28: tid = 0x132157, 0x00000001cf938764 libsystem_pthread.dylib`start_wqthread thread #46: tid = 0x1321ff, 0x00000001cf938764 libsystem_pthread.dylib`start_wqthread thread #49: tid = 0x132202, 0x00000001cf938764 libsystem_pthread.dylib`start_wqthread thread #53: tid = 0x13228c, 0x00000001cf938764 libsystem_pthread.dylib`start_wqthread thread #58: tid = 0x132397, 0x00000001b1db12d0 libsystem_kernel.dylib`mach_msg_trap + 8, name = 'com.apple.arkit.ardisplaylink.0x283d67a00' thread #59: tid = 0x132398, 0x00000001b1dd5f5c libsystem_kernel.dylib`__ulock_wait + 8, name = 'com.apple.scenekit.scnview-renderer', queue = 'com.apple.scenekit.renderingQueue.ARSCNView0x1071d5820' thread #60: tid = 0x1323a2, 0x00000001b1db12d0 libsystem_kernel.dylib`mach_msg_trap + 8, name = 'H11ANEServicesThread' thread #61: tid = 0x1323b3, 0x00000001b1db12d0 libsystem_kernel.dylib`mach_msg_trap + 8, name = 'H11ANEServicesThread' thread #62: tid = 0x13249f, 0x00000001b1db1324 libsystem_kernel.dylib`semaphore_timedwait_trap + 8 thread #65: tid = 0x1324a8, 0x00000001cf938764 libsystem_pthread.dylib`start_wqthread thread #67: tid = 0x1324df, 0x00000001b1db1324 libsystem_kernel.dylib`semaphore_timedwait_trap + 8 thread #68: tid = 0x132505, 0x0000000198e9d150 libobjc.A.dylib`object_getClassName, queue = 'com.apple.libdispatch-manager' thread #69: tid = 0x132507, 0x0000000198e9d150 libobjc.A.dylib`object_getClassName thread #70: tid = 0x132537, 0x00000001cf938764 libsystem_pthread.dylib`start_wqthread thread #71: tid = 0x132538, 0x00000001cf938764 libsystem_pthread.dylib`start_wqthread (lldb)

I'm implementing an example app using ARKit + SceneKit. In order to do hittest on scenekit objects(nodes) in the scene, I used ARSCNView.hittest() and it worked well. However when I draw same scene with SCNRenderer(I'm writing also an offscreen renderer) and try to do hittest with SCNRenderer.hittest() but it doesn't return any results.I assumed the range of input points should be only inside of GPU viewport which is SCNRenderer.currentViewport. But it doesn't work Any idea how to do properly do hittest with SCNRenderer?Thanks in advance

I created a project using "AR Reality App" template. When I run it, there are following error messages in the debug panel. There is no virtual box of Experience.rcproject in the physical world. What am I missing? I am sure this template was working before my updating iOS and Xcode to current/lates version. My testing environment: Xcode: Version 13.0 (13A233), iOS: 15.0.1 2021-10-08 19:00:56.253834+0300 FirstARProject[13602:894041] Metal GPU Frame Capture Enabled 2021-10-08 19:00:56.254115+0300 FirstARProject[13602:894041] Metal API Validation Enabled 2021-10-08 19:00:57.081193+0300 FirstARProject[13602:894041] [AssetTypes] Registering library (/System/Library/PrivateFrameworks/CoreRE.framework/default.metallib) that already exists in shader manager. Library will be overwritten. 2021-10-08 19:00:57.439006+0300 FirstARProject[13602:894041] [Assets] Resolving material name 'engine:BuiltinRenderGraphResources/AR/suFeatheringCreateMergedOcclusionMask.rematerial' as an asset path -- this usage is deprecated; instead provide a valid bundle 2021-10-08 19:00:57.491103+0300 FirstARProject[13602:894041] [Assets] Resolving material name 'engine:BuiltinRenderGraphResources/AR/arKitPassthrough.rematerial' as an asset path -- this usage is deprecated; instead provide a valid bundle 2021-10-08 19:00:57.493113+0300 FirstARProject[13602:894041] [Assets] Resolving material name 'engine:BuiltinRenderGraphResources/AR/drPostAndComposition.rematerial' as an asset path -- this usage is deprecated; instead provide a valid bundle 2021-10-08 19:00:57.494988+0300 FirstARProject[13602:894041] [Assets] Resolving material name 'engine:BuiltinRenderGraphResources/AR/arSegmentationComposite.rematerial' as an asset path -- this usage is deprecated; instead provide a valid bundle 2021-10-08 19:00:57.497119+0300 FirstARProject[13602:894041] [Assets] Resolving material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute0.rematerial' as an asset path -- this usage is deprecated; instead provide a valid bundle 2021-10-08 19:00:57.499372+0300 FirstARProject[13602:894041] [Assets] Resolving material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute1.rematerial' as an asset path -- this usage is deprecated; instead provide a valid bundle 2021-10-08 19:00:57.500704+0300 FirstARProject[13602:894041] [Assets] Resolving material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute2.rematerial' as an asset path -- this usage is deprecated; instead provide a valid bundle 2021-10-08 19:00:57.524705+0300 FirstARProject[13602:894041] [Assets] Resolving material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute3.rematerial' as an asset path -- this usage is deprecated; instead provide a valid bundle 2021-10-08 19:00:57.526440+0300 FirstARProject[13602:894041] [Assets] Resolving material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute4.rematerial' as an asset path -- this usage is deprecated; instead provide a valid bundle 2021-10-08 19:00:57.527467+0300 FirstARProject[13602:894041] [Assets] Resolving material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute5.rematerial' as an asset path -- this usage is deprecated; instead provide a valid bundle 2021-10-08 19:00:57.528473+0300 FirstARProject[13602:894041] [Assets] Resolving material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute6.rematerial' as an asset path -- this usage is deprecated; instead provide a valid bundle 2021-10-08 19:00:57.529441+0300 FirstARProject[13602:894041] [Assets] Resolving material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute7.rematerial' as an asset path -- this usage is deprecated; instead provide a valid bundle 2021-10-08 19:00:57.530827+0300 FirstARProject[13602:894041] [Foundation.Serialization] Json Parse Error line 18: Json Deserialization; unknown member 'EnableARProbes' - skipping. 2021-10-08 19:00:57.530896+0300 FirstARProject[13602:894041] [Foundation.Serialization] Json Parse Error line 20: Json Deserialization; unknown member 'EnableGuidedFilterOcclusion' - skipping. 2021-10-08 19:01:01.877601+0300 FirstARProject[13602:894041] throwing -10878 2021-10-08 19:01:01.879167+0300 FirstARProject[13602:894041] throwing -10878 2021-10-08 19:01:01.879276+0300 FirstARProject[13602:894041] throwing -10878 2021-10-08 19:01:01.879796+0300 FirstARProject[13602:894041] throwing -10878 2021-10-08 19:01:01.879906+0300 FirstARProject[13602:894041] throwing -10878 2021-10-08 19:01:01.880011+0300 FirstARProject[13602:894041] throwing -10878 2021-10-08 19:01:01.880096+0300 FirstARProject[13602:894041] throwing -10878 2021-10-08 19:01:01.880177+0300 FirstARProject[13602:894041] throwing -10878 2021-10-08 19:01:01.880450+0300 FirstARProject[13602:894041] throwing -10878 2021-10-08 19:01:02.732980+0300 FirstARProject[13602:894398] [Technique] ARWorldTrackingTechnique <0x11a48d2e0>: World tracking performance is being affected by resource constraints [2]

I'm trying to run the Fox game sample SceneKit code from WWDC2017, but it crashes when calculating the collision bounding box. // Setup collision shape let (min, max) = model.boundingBox Thread 1: EXC_BAD_ACCESS (code=1, address=0x7fffc0000020) This error only occurs on my M1 iMac, but runs fine on Intel (using Rosetta). I really want to get started on SceneKit development for M1 Macs so any help would be appreciated.

Are there any hands-on or directed labs for SceneKit anytime in the near future? Are there any recent SceneKit guides from Apple? There aren't many current resources online so I'm pretty much stuck just reading documentation and experimenting on my own (which feels inefficient).