NSInternalInconsistencyException in iOS simulator when building Metal only

Question

Received an NSInternalInconsistencyException in the iOS Simulator (Xcode v9.1) with Unity 2017.2 using a MacBook Pro (Retina, 15-inch, Late 2013) running High Sierra (10.13.1). The build is set to Metal only. If I build with Metal and OpenGL ES 3, this error will not happen. However, I need to test Metal in the simulator and if I build with both it will select OpenGL ES 3. My video card (NVIDIA GeForce GT 750M) does support Metal and I am able to use the Metal GUI for Unity. I do not see any errors if I build for device (sadly I won't have a device that supports Metal for a few weeks).

 Uncaught exception: NSInternalInconsistencyException: [UnityAppController renderingAPI] called before [UnityAppController selectRenderingApi]
 (
     0   CoreFoundation                      0x00000001168501ab __exceptionPreprocess + 171
     1   libobjc.A.dylib                     0x0000000115eedf41 objc_exception_throw + 48
     2   CoreFoundation                      0x0000000116855372 +[NSException raise:format:arguments:] + 98
     3   Foundation                          0x000000011281b089 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 193
     4   AfaTest01                           0x000000010a20a3a4 -[UnityAppController(Rendering) renderingAPI] + 260
     5   AfaTest01                           0x000000010a221612 -[UnityAppController application:didFinishLaunchingWithOptions:] + 898
     6   UIKit                               0x0000000113910c12 -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 267
     7   UIKit                               0x000000011391266f -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 4105
     8   UIKit                               0x0000000113917afd -[UIApplication _runWithMainScene:transitionContext:completion:] + 1720
     9   UIKit                               0x0000000113cdd2e0 __111-[__UICanvasLifecycleMonitor_Compatability _scheduleFirstCommitForScene:transition:firstActivation:completion:]_block_invoke + 924
     10  UIKit                               0x00000001140afbe0 +[_UICanvas _enqueuePostSettingUpdateTransactionBlock:] + 153
     11  UIKit                               0x0000000113cdced9 -[__UICanvasLifecycleMonitor_Compatability _scheduleFirstCommitForScene:transition:firstActivation:completion:] + 249
     12  UIKit                               0x0000000113cdd737 -[__UICanvasLifecycleMonitor_Compatability activateEventsOnly:withContext:completion:] + 668
     13  UIKit                               0x0000000114651c4d __82-[_UIApplicationCanvas _transitionLifecycleStateWithTransitionContext:completion:]_block_invoke + 262
     14  UIKit                               0x0000000114651b06 -[_UIApplicationCanvas _transitionLifecycleStateWithTransitionContext:completion:] + 444
     15  UIKit                               0x0000000114332d52 __125-[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:]_block_invoke + 420
     16  UIKit                               0x000000011452fa7e _performActionsWithDelayForTransitionContext + 100
     17  UIKit                               0x0000000114332b4e -[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:] + 231
     18  UIKit                               0x00000001140af23d -[_UICanvas scene:didUpdateWithDiff:transitionContext:completion:] + 392
     19  UIKit                               0x000000011391637e -[UIApplication workspace:didCreateScene:withTransitionContext:completion:] + 523
     20  UIKit                               0x0000000113eeac1b -[UIApplicationSceneClientAgent scene:didInitializeWithEvent:completion:] + 369
     21  FrontBoardServices                  0x0000000119571158 -[FBSSceneImpl _didCreateWithTransitionContext:completion:] + 338
     22  FrontBoardServices                  0x0000000119579c4d __56-[FBSWorkspace client:handleCreateScene:withCompletion:]_block_invoke_2 + 235
     23  libdispatch.dylib                   0x0000000117a802b5 _dispatch_client_callout + 8
     24  libdispatch.dylib                   0x0000000117a85565 _dispatch_block_invoke_direct + 324
     25  FrontBoardServices                  0x00000001195a5672 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 24
     26  FrontBoardServices                  0x00000001195a5328 -[FBSSerialQueue _performNext] + 464
     27  FrontBoardServices                  0x00000001195a5897 -[FBSSerialQueue _performNextFromRunLoopSource] + 45
     28  CoreFoundation                      0x00000001167f3231 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
     29  CoreFoundation                      0x0000000116892e41 __CFRunLoopDoSource0 + 81
     30  CoreFoundation                      0x00000001167d7b49 __CFRunLoopDoSources0 + 185
     31  CoreFoundation                      0x00000001167d712f __CFRunLoopRun + 1279
     32  CoreFoundation                      0x00000001167d69b9 CFRunLoopRunSpecific + 409
     33  GraphicsServices                    0x0000000116eec9c6 GSEventRunModal + 62
     34  UIKit                               0x00000001139195e8 UIApplicationMain + 159
     35  AfaTest01                           0x000000010a1facd4 main + 212
     36  libdyld.dylib                       0x0000000117af4d81 start + 1
     37  ???                                 0x0000000000000001 0x0 + 1
 )
 2017-11-13 17:16:22.677265-0500 AfaTest01[28324:928555] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '[UnityAppController renderingAPI] called before [UnityAppController selectRenderingApi]'
 *** First throw call stack:
 (
     0   CoreFoundation                      0x00000001168501ab __exceptionPreprocess + 171
     1   libobjc.A.dylib                     0x0000000115eedf41 objc_exception_throw + 48
     2   CoreFoundation                      0x0000000116855372 +[NSException raise:format:arguments:] + 98
     3   Foundation                          0x000000011281b089 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 193
     4   AfaTest01                           0x000000010a20a3a4 -[UnityAppController(Rendering) renderingAPI] + 260
     5   AfaTest01                           0x000000010a221612 -[UnityAppController application:didFinishLaunchingWithOptions:] + 898
     6   UIKit                               0x0000000113910c12 -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 267
     7   UIKit                               0x000000011391266f -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 4105
     8   UIKit                               0x0000000113917afd -[UIApplication _runWithMainScene:transitionContext:completion:] + 1720
     9   UIKit                               0x0000000113cdd2e0 __111-[__UICanvasLifecycleMonitor_Compatability _scheduleFirstCommitForScene:transition:firstActivation:completion:]_block_invoke + 924
     10  UIKit                               0x00000001140afbe0 +[_UICanvas _enqueuePostSettingUpdateTransactionBlock:] + 153
     11  UIKit                               0x0000000113cdced9 -[__UICanvasLifecycleMonitor_Compatability _scheduleFirstCommitForScene:transition:firstActivation:completion:] + 249
     12  UIKit                               0x0000000113cdd737 -[__UICanvasLifecycleMonitor_Compatability activateEventsOnly:withContext:completion:] + 668
     13  UIKit                               0x0000000114651c4d __82-[_UIApplicationCanvas _transitionLifecycleStateWithTransitionContext:completion:]_block_invoke + 262
     14  UIKit                               0x0000000114651b06 -[_UIApplicationCanvas _transitionLifecycleStateWithTransitionContext:completion:] + 444
     15  UIKit                               0x0000000114332d52 __125-[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:]_block_invoke + 420
     16  UIKit                               0x000000011452fa7e _performActionsWithDelayForTransitionContext + 100
     17  UIKit                               0x0000000114332b4e -[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:] + 231
     18  UIKit                               0x00000001140af23d -[_UICanvas scene:didUpdateWithDiff:transitionContext:completion:] + 392
     19  UIKit                               0x000000011391637e -[UIApplication workspace:didCreateScene:withTransitionContext:completion:] + 523
     20  UIKit                               0x0000000113eeac1b -[UIApplicationSceneClientAgent scene:didInitializeWithEvent:completion:] + 369
     21  FrontBoardServices                  0x0000000119571158 -[FBSSceneImpl _didCreateWithTransitionContext:completion:] + 338
     22  FrontBoardServices                  0x0000000119579c4d __56-[FBSWorkspace client:handleCreateScene:withCompletion:]_block_invoke_2 + 235
     23  libdispatch.dylib                   0x0000000117a802b5 _dispatch_client_callout + 8
     24  libdispatch.dylib                   0x0000000117a85565 _dispatch_block_invoke_direct + 324
     25  FrontBoardServices                  0x00000001195a5672 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 24
     26  FrontBoardServices                  0x00000001195a5328 -[FBSSerialQueue _performNext] + 464
     27  FrontBoardServices                  0x00000001195a5897 -[FBSSerialQueue _performNextFromRunLoopSource] + 45
     28  CoreFoundation                      0x00000001167f3231 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
     29  CoreFoundation                      0x0000000116892e41 __CFRunLoopDoSource0 + 81
     30  CoreFoundation                      0x00000001167d7b49 __CFRunLoopDoSources0 + 185
     31  CoreFoundation                      0x00000001167d712f __CFRunLoopRun + 1279
     32  CoreFoundation                      0x00000001167d69b9 CFRunLoopRunSpecific + 409
     33  GraphicsServices                    0x0000000116eec9c6 GSEventRunModal + 62
     34  UIKit                               0x00000001139195e8 UIApplicationMain + 159
     35  AfaTest01                           0x000000010a1facd4 main + 212
     36  libdyld.dylib                       0x0000000117af4d81 start + 1
     37  ???                                 0x0000000000000001 0x0 + 1
 )
 libc++abi.dylib: terminating with uncaught exception of type NSException

Answer 1

Answer by abiasi · Dec 01, 2017 at 08:35 AM

We are experiencing the same issue running Unity 2017.2.0p3 on a MacBook Pro (15-inch, 2016) with a Radeon Pro 450 2 GB. The iPhone X simulator crashes as soon as the app starts if Metal is selected as the rendering API, works fine under OpenGL or Auto.

 Uncaught exception: NSInternalInconsistencyException: [UnityAppController renderingAPI] called before [UnityAppController selectRenderingApi]

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NSInternalInconsistencyException in iOS simulator when building Metal only

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