Fail to compile nvrhi_d3d12

[hyblocker]

Upon compiling nvrhi_d3d12 using MSVC clang when linked with a C++20 project, I'm hit with this error several times:

nvrhi\src\d3d12/d3d12-backend.h(79,62): error : integer value 4294967295 is outside the valid range of values [0, 33554431] for the enumeration type 'D3D12_RESOURCE_STATES' [-Wenum-constexpr-conversion]

Replacing constexpr D3D12_RESOURCE_STATES c_ResourceStateUnknown = D3D12_RESOURCE_STATES(~0u); on line 79 with constexpr D3D12_RESOURCE_STATES c_ResourceStateUnknown = D3D12_RESOURCE_STATES(0xFFFFu); seems to resolve the error.

[apanteleev]

Fixed in 55b0dd4 - closing.