12_2 feature undeclared

[microsoft]

12_2 feature undeclared

[jenatali]

This likely means that you're including <d3d12.h> before or instead of <directx/d3d12.h>.

[walbourn]

I.e. you are using the old version of d3d12.h (Window 10 SDK 19041 or earlier).

[r2com]

Alright, so updated today to a completely new MSVC, now I am running latest 2022 community and during setup I did install latest SDK's.

Now, during compile I do NOT get such error, i.e. it compiles without any issues. however, once I try to start executable, it fails with the following printout:
DX ERROR: D3D12CreateDevice: Unrecognized D3D_FEATURE_LEVEL (0xc200) for MinimumFeatureLevel. [ INITIALIZATION ERROR #506: ]
'dxtest5.exe' (Win32): Unloaded 'C:\Windows\System32\DXGIDebug.dll'

why is it still not recognizing feature of 12_2 with latest SDKs and even after successful compile?

[jenatali]

What Windows version are you running? You'll need to be on Win11 or using the Agility SDK for FL12.2 to be recognized.

[r2com]

well, here is a thing, I went to "Modify" section of MSVC installer, and it shows to me that I have Windows SDK 10.0.20348.0 installed.

For 12_2 I read that year ago, one needed 20170 or higher, it is obvious that my version is HIGHER than 20170 (20348), so it means it should have worked?

as per which windows, well, I am running Windows 10 Pro with above shown SDK.

is that problem? are you saying that on top of version higher than 20170 I must also run Win11??

[walbourn]

You are building with the latest headers which define the D3D_FEATURE_LEVEL_12_2 compiler symbol.

To actually use Feature Level 12.2, you need two things:

1. The DirectX 12 Runtime that supports Feature Level 12.2
2. A video driver & card combination that supports it.

The version of the DirectX 12 Runtime in Windows 11 supports Feature level 12.2.

For Windows 10 (18363) or later, you can use the DirectX12 Agility SDK and it provides an application local DLL version of the DirectX 12 Runtime that supports Feature Level 12.2 on your system.

[elderkeltir]

I had the same issue with one object file where I compile shaders using dxc.
to resolve it I had to put #include <directx/d3dx12.h> above

#include <dxc/dxcapi.h>
#include <dxc/d3d12shader.h>

Might be helpful for someone.
Cheers!