NullReferenceException

[nvoelzow]

Every now and then when trying to load large portions of high resolution point clouds I will get this error when using the (original) PointCloudViewerTilesDX11 :

NullReferenceException: Object reference not set to an instance of an object UnityLibrary.MainThread+d__12.MoveNext () (at Assets/PointCloudTools/PointCloudViewerDX11/Scripts/Common/MainThread.cs:74) UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at :0)

after this happens no more tiles will be loaded until I restart the Component.

Unfortunately it only happens from time to time, so it's not exactly easy to track down...

[unitycoder]

ok adding to things to check list, i remember seeing this few times, but thought that it was fixed by those while-loops after CallInitBuffers line, to make sure they are ready.

[Yangfb91]

same issue, The only way is Restart my app.

[unitycoder]

aha, i'll need to check more.. which unity version, and do you have [x] use native arrays, and [x] release tile memory enabled? (just wondering if its related to those)

[Yangfb91]

[unitycoder]

ok, does it happen mostly in the build, less in editor?

[unitycoder]

one thing that you can test (*or email me, so i'll send updated test script)

• open PointCloudViewerTilesDX11.cs
• Find IEnumerator InitDX11BufferA() and IEnumerator InitDX11BufferB()
• Add try-catches inside that method (except cannot add lines with ".. yield return 0;" inside those try catch, so 3 separate try catches, to catch them all!
• Then run build, if error happens, its most likely in those parts, and might get more info in player.log (or in editor, if happens there)

example, inside InitDX11BufferA() 1st trycatch:

2nd

3rd

[Yangfb91]

I test my proj mostly in editor,so i am not sure which one happens a lot. And i will test try-catches to get more info.

[unitycoder]

MainThread code has had updates, more in v2.80, should help with some null ref issues.