EasyMovieTexture crashes with assertion fail in CompositorVR

Sorry, this looks like a bug in our OSX code path within Unity. The main and render threads' frame indices seem to be drifting due to a long stall on the main thread. Worst-case, it should be fixed in late March, but I'll see if we can get a workaround pushed this month. One thing you could try is temporarily disabling VR while initializing EasyMovieTexture. Set UnityEngine.VR.VRSettings.loadedDevice = UnityEngine.VR.VRDeviceType.None, load EasyMovieTexture, and then set it back to UnityEngine.VR.VRDeviceType.Oculus when finished.

@vrdaveb
I'm getting the same error using that disable/load/enable solution:

BUG   ( 2966): Abort message: 'E:\tw\33a21edae6c0e9ad\Software\OculusSDK\Integrations\Unity\Releases\0.1.4.0\OVRPlugin\Src\Util\CompositorVRAPI.cpp:732: virtual bool OVR::Util::CompositorVRAPI::EndFrame(int): assertion "frameIndex >= m_states[Front].m_frameIndex" failed'
I/DEBUG   ( 2966):     r0 00000000  r1 00005ad8  r2 00000006  r3 00000000
I/DEBUG   ( 2966):     r4 dddecdb8  r5 00000006  r6 00000058  r7 0000010c
I/DEBUG   ( 2966):     r8 ef100890  r9 000027a8  sl dd000040  fp dddec8a4
I/DEBUG   ( 2966):     ip 00005ad8  sp dddec810  lr f761dcf9  pc f7641d24  cpsr 60070010
I/DEBUG   ( 2966): 
I/DEBUG   ( 2966): backtrace:
I/DEBUG   ( 2966):     #00 pc 0003bd24  /system/lib/libc.so (tgkill+12)
I/DEBUG   ( 2966):     #01 pc 00017cf5  /system/lib/libc.so (pthread_kill+52)
I/DEBUG   ( 2966):     #02 pc 00018907  /system/lib/libc.so (raise+10)
I/DEBUG   ( 2966):     #03 pc 000151a5  /system/lib/libc.so (__libc_android_abort+36)
I/DEBUG   ( 2966):     #04 pc 00012fec  /system/lib/libc.so (abort+4)
I/DEBUG   ( 2966):     #05 pc 000163e9  /system/lib/libc.so (__libc_fatal+16)
I/DEBUG   ( 2966):     #06 pc 00015229  /system/lib/libc.so (__assert2+20)
I/DEBUG   ( 2966):     #07 pc 000326ec  /data/app/com.oculus.UnitySample-1/lib/arm/libOVRPlugin.so (OVR::Util::CompositorVRAPI::EndFrame(int)+216)
I/DEBUG   ( 2966):     #08 pc 0002eee0  /data/app/com.oculus.UnitySample-1/lib/arm/libOVRPlugin.so (ovrp_EndFrame+44)
I/DEBUG   ( 2966):     #09 pc 00799c7c  /data/app/com.oculus.UnitySample-1/lib/arm/libunity.so
I/DEBUG   ( 2966):     #10 pc 00493cb4  /data/app/com.oculus.UnitySample-1/lib/arm/libunity.so
I/DEBUG   ( 2966):     #11 pc 00494a00  /data/app/com.oculus.UnitySample-1/lib/arm/libunity.so
I/DEBUG   ( 2966):     #12 pc 0048f648  /data/app/com.oculus.UnitySample-1/lib/arm/libunity.so
I/DEBUG   ( 2966):     #13 pc 004354dc  /data/app/com.oculus.UnitySample-1/lib/arm/libunity.so
I/DEBUG   ( 2966):     #14 pc 000174e7  /system/lib/libc.so (__pthread_start(void*)+30)
I/DEBUG   ( 2966):     #15 pc 00015503  /system/lib/libc.so (__start_thread+6)
D/STATUSBAR-QSTileView( 3920): dynamicallyReduceTextSize: 0

Does it mean it is OSX-only bug?

I've checked it by using Unity on Windows and I am getting the same crash.
I've noticed that multithreaded rendering disabled makes thing better.

Thanks for following up. We are working on a solution here. In the meantime you may have to stick with single-threaded rendering if that works for you.

I got the same crash when building for Android. After updating to Unity 5.3.4 the bug seems to have disappeared.

Can you confirm that the bug has been fixed in 5.3.4? I checked the release notes but found no entry related to this issue.

Hi - could we please get confirmation on what has happened to a solution? Thanks!

This should be fixed in Unity 5.3.4p5 and up. I don't have EasyMovieTexture handy to test, but the frame index hazard has been removed. Please let me know if you encounter this again.

I have been using the MPMP player (https://www.assetstore.unity3d.com/en/#!/content/53391) which like EasyMovieTexture exposes the android media player. This issues seems to still live in 5.3.5f1 - the single thread seems to work around this but it is not ideal. My adb.exe output looked very similar to the one posted above when running in debug mode:

06-01 16:09:11.204  3055  3055 F DEBUG   : Abort message: 'E:\tw\43ffd860e3c1b6c5\Software\OculusSDK\Integrations\Unity\Releases\si-1.3.2\OVRPlugin\Src\Util\CompositorVRAPI.cpp:1176: virtual bool OVR::Util::CompositorVRAPI::EndFrame(int): assertion "frameIndex >= m_renderThreadState[renderThreadStateIndex].m_frameIndex" failed'
06-01 16:09:11.204  3055  3055 F DEBUG   :     r0 00000000  r1 000041a8  r2 00000006  r3 db23f978
06-01 16:09:11.204  3055  3055 F DEBUG   :     r4 db23f980  r5 db23f930  r6 00000000  r7 0000010c
06-01 16:09:11.204  3055  3055 F DEBUG   :     r8 ee77ce10  r9 000027a8  sl db440040  fp db23f424
06-01 16:09:11.204  3055  3055 F DEBUG   :     ip 00000006  sp db23dfa0  lr f712b355  pc f712d744  cpsr 40000010
06-01 16:09:11.224  3055  3055 F DEBUG   :
06-01 16:09:11.224  3055  3055 F DEBUG   : backtrace:
06-01 16:09:11.224  3055  3055 F DEBUG   :     #00 pc 00042744  /system/lib/libc.so (tgkill+12)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #01 pc 00040351  /system/lib/libc.so (pthread_kill+32)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #02 pc 0001ca8b  /system/lib/libc.so (raise+10)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #03 pc 00019d09  /system/lib/libc.so (__libc_android_abort+34)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #04 pc 0001754c  /system/lib/libc.so (abort+4)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #05 pc 0001b69f  /system/lib/libc.so (__libc_fatal+16)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #06 pc 00019d91  /system/lib/libc.so (__assert2+20)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #07 pc 000385d0  /data/app/com.bf.player-1/lib/arm/libOVRPlugin.so (OVR::Util::CompositorVRAPI::EndFrame(int)+312)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #08 pc 0002ef34  /data/app/com.bf.player-1/lib/arm/libOVRPlugin.so (ovrp_EndFrame+84)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #09 pc 0085c454  /data/app/com.bf.player-1/lib/arm/libunity.so (VRDeviceOculus::EndFrameGfxThread(unsigned int)+104)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #10 pc 004e29d8  /data/app/com.bf.player-1/lib/arm/libunity.so (GfxDeviceWorker::RunCommand(ThreadedStreamBuffer&)+19604)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #11 pc 004e3898  /data/app/com.bf.player-1/lib/arm/libunity.so (GfxDeviceWorker::Run()+20)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #12 pc 004ddd28  /data/app/com.bf.player-1/lib/arm/libunity.so (GfxDeviceWorker::RunGfxDeviceWorker(void*)+88)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #13 pc 0047d5b8  /data/app/com.bf.player-1/lib/arm/libunity.so (Thread::RunThreadWrapper(void*)+84)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #14 pc 0003fc53  /system/lib/libc.so (__pthread_start(void*)+30)
06-01 16:09:11.224  3055  3055 F DEBUG   :     #15 pc 0001a38b  /system/lib/libc.so (__start_thread+6)

This should be fixed in 5.3.5p7. Are you still able to reproduce it there?