Hi,
while giving a try at bundles branch by testing D3D12Bundles DX12 SDK sample:
(https://github.com/microsoft/DirectX-Graphics-Samples/tree/master/Samples/Desktop/D3D12Bundles)
I saw the next alphabetical one is D3D12DepthBoundsTest..
VKD3D should support alreadly that feature..
but VKD3D testing on AMD and NV on Windows shows rendering a triangle instead of correctly as shown on screenshoot:
https://github.com/microsoft/DirectX-Graphics-Samples/tree/master/Samples/Desktop/D3D12DepthBoundsTest
seems a simple fix should be possible (?) as this extension isn't very complex..
logs doesn't seem helpful..
EDIT: I attach binary for easy testing:
D3D12DepthBoundsTest.zip

thanks..