>>emidoo+(OP)
This is also related to Godot
"The reason to make it optional is that Direct3D 12 support currently relies on the proprietary dxil.dll library from the DirectX Shader Compiler being shipped together with Godot, and shipping proprietary software goes against the mission of the Godot project."
https://godotengine.org/article/dev-snapshot-godot-4-3-dev-3...
Edit: apparently dxil.dll is not part of DXC (the classic move to make "open source" software dependent on external proprietary garbage, apparently.) But I'd still doubt it's a managed DLL.