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Fixed in 2020.2.X



Found in




Issue ID




Crash on NVAPI_Thunk when importing of multiple Maya files finishes with HDRP + DXR



How to reproduce:
1. Open project "Case_1228854" from the attached link
2. In the Project Window open the folder "previs"
3. Select all Assets in the folder, right-click them and click on "Reimport"
4. After they finish reimporting, reimport them again

Reproducible with: 7.2.0 (2020.2.0a7), 7.3.1 (2020.2.0a7), 8.0.1 (2020.1.0b5, 2020.2.0a7), preview.13 - 9.0.0 (2020.1.0b5, 2020.2.0a7)
Not reproducible with: 7.1.8 (2020.2.0a7), 7.3.1 (2019.3.7f1)
Could not test with: 2017.4.39f1 (Package manager not available), 2018.4.21f1 (HDRP not available in Package Manager)

First lines of the Stack trace:
0x00007FFEB49A59DC (nvwgf2umx) NVAPI_Thunk
0x00007FFEB4B846F7 (nvwgf2umx) NVAPI_Thunk
0x00007FFEB40C33CC (nvwgf2umx) OpenAdapter12
0x00007FFE92073C3A (d3d12) D3D12PIXReportCounter
0x00007FF6D0770049 (Unity) GfxTaskExecutorD3D12::UnmapTiledSubresource
0x00007FF6D0789DFA (Unity) TiledTextureManager::CheckMemoryBudgetAndUpdateTiledResources

1. Only reproduces with HDRP + DXR
2. Importing the entire folder seems to not reproduce the issue
3. Sometimes the issue does not reproduce, reimporting again, or reopening the project makes the issue reproduce again

  1. Resolution Note (fix version 2020.2):

    Fixed in: 2020.2.0a20

    2020.1 and older have a memory usage spike when importing assets with DX12. Newer 2020.2 and above don't have this issue.

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