WPF and DirectX 11 via D3DImage

Question

I want to use DirectX 11 from unmanaged C++ code and use WFP for the GUI. SlimDX is not suitable for me. I have found the solution to make working WPF with DirectX 10:

Answer 1

I used wrong format for the vertex buffer layout. I used DXGI_FORMAT_B8G8R8A8_UNORM, but have to use DXGI_FORMAT_R32G32B32_FLOAT in my case.