Re: [PATCH v3 0/4] MR5220: win32u: Move vulkan d3dkmt implementation out of winex11.

[Rémi Bernon (＠rbernon)]

I'm not completely sure what what going on, and I could only locally reproduce a failure with invalid vk devices when the display driver failed to find a vulkan GUID for the GPUs.

In that case, we are failing on the vulkan path in NtGdiDdDDIOpenAdapterFromLuid, and fallback to some dummy D3DKMT adapter, which vk_device wasn't initialized. Later, when NtGdiDdDDIQueryVideoMemoryInfo was called, the invalid vk_device caused some vulkan assertion.

I changed this to zero-initialize the d3dkmt adapters and added a check for an empty vk_device.