HoloLens 2 Mixed Reality Capture's viewfinder not showing

[austinbhale]

Description

To reproduce, restart the device. Open a StereoKit app, and say "Start Recording". Starting in October 2023, a viewfinder for the HoloLens 2 should appear when recording. It isn't until you exit the SK app that you'll be able to see the viewfinder when starting another recording or MRC session.

A strange tidbit is that if you start a recording outside of the SK app, the viewfinder appears as expected. But, if you jump back into the SK app and try to reproduce with a new recording, the viewfinder will appear. That's why I recommend restarting the device in order to reproduce.

Platform / Environment

HoloLens 2 UWP. Tested in v0.3.6 -> v0.3.9

Logs or exception details

I was able to get the std::runtime_error once after a fresh device restart, but it does not always occur. The rest of the log is consistent for successive runs of the app. The holographic space/camera exceptions appear when you stop recording, both when the frustum is and is not visible.

D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x141725D4, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x14014F34, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C5F2C4, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C5F5E4, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C5DCE4, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C5E964, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C5EFA4, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C5F904, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C60264, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x1400C3AC, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x1404D42C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x1404D23C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x1404D9FC, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11UnorderedAccessView: Name="unnamed", Addr=0x140279AC, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097301: CREATE_UNORDEREDACCESSVIEW]
D3D11 INFO: Create ID3D11UnorderedAccessView: Name="unnamed", Addr=0x14028C6C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097301: CREATE_UNORDEREDACCESSVIEW]
D3D11 INFO: Create ID3D11UnorderedAccessView: Name="unnamed", Addr=0x1402704C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097301: CREATE_UNORDEREDACCESSVIEW]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C62E24, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C627E4, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C62B04, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x1404E3AC, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x1404E78C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x1404DBEC, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x1404DDDC, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11UnorderedAccessView: Name="unnamed", Addr=0x140286CC, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097301: CREATE_UNORDEREDACCESSVIEW]
D3D11 INFO: Create ID3D11UnorderedAccessView: Name="unnamed", Addr=0x14027F4C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097301: CREATE_UNORDEREDACCESSVIEW]
D3D11 INFO: Create ID3D11UnorderedAccessView: Name="unnamed", Addr=0x140288AC, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097301: CREATE_UNORDEREDACCESSVIEW]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C60BC4, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C61E84, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11Texture2D: Name="unnamed", Addr=0x17C63144, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097234: CREATE_TEXTURE2D]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x1404E97C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x1404EB6C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x1404ED5C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x163DC23C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11UnorderedAccessView: Name="unnamed", Addr=0x1402830C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097301: CREATE_UNORDEREDACCESSVIEW]
D3D11 INFO: Create ID3D11UnorderedAccessView: Name="unnamed", Addr=0x140284EC, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097301: CREATE_UNORDEREDACCESSVIEW]
D3D11 INFO: Create ID3D11UnorderedAccessView: Name="unnamed", Addr=0x14009F4C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097301: CREATE_UNORDEREDACCESSVIEW]
D3D11 INFO: Create ID3D11Buffer: Name="unnamed", Addr=0x17C60584, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097228: CREATE_BUFFER]
D3D11 INFO: Create ID3D11Buffer: Name="unnamed", Addr=0x17C60EE4, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097228: CREATE_BUFFER]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x163BDAA4, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11RenderTargetView: Name="unnamed", Addr=0x1404144C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097243: CREATE_RENDERTARGETVIEW]
D3D11 INFO: Create ID3D11DepthStencilView: Name="unnamed", Addr=0x163BDEE4, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097246: CREATE_DEPTHSTENCILVIEW]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x163C0964, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11RenderTargetView: Name="unnamed", Addr=0x1404164C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097243: CREATE_RENDERTARGETVIEW]
D3D11 INFO: Create ID3D11DepthStencilView: Name="unnamed", Addr=0x163C0B84, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097246: CREATE_DEPTHSTENCILVIEW]
D3D11 INFO: Create ID3D11ShaderResourceView: Name="unnamed", Addr=0x163C1624, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097240: CREATE_SHADERRESOURCEVIEW]
D3D11 INFO: Create ID3D11RenderTargetView: Name="unnamed", Addr=0x0F0E924C, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097243: CREATE_RENDERTARGETVIEW]
D3D11 INFO: Create ID3D11DepthStencilView: Name="unnamed", Addr=0x163BFEC4, ExtRef=1, IntRef=0 [ STATE_CREATION INFO #2097246: CREATE_DEPTHSTENCILVIEW]
Exception thrown at 0x776C6C7F in NARA.UWP.exe: Microsoft C++ exception: std::runtime_error at memory location 0x0537DE18.
[SK info] xrEndFrame [XR_ERROR_RUNTIME_FAILURE]
analog\input\mirage\publicapi\holographicspace.cpp(346)\Windows.Mirage.dll!70972881: (caller: 709FAD3B) ReturnHr(2) tid(15cc) 80004005 Unspecified error
analog\input\mirage\publicapi\holographiccamera.cpp(208)\Windows.Mirage.dll!709FAD4D: (caller: 709FCBBB) ReturnHr(3) tid(15cc) 80004005 Unspecified error

[austinbhale]

At times, we've also noticed that when MRC is activated in an SK app, it will crash unexpectedly. Closing the app or restarting usually resolves it. Unfortunately, I don't have any additional logs or debugging info yet

[maluoi]

I'm about to wrap up some work on a tricky feature, but after that I think I owe UWP (like #981) a bit of time and attention. I'll definitely be looking into this next week!

[austinbhale]

Sweeet, thanks so much :)

[laultman]

Likewise, thanks!