gfx_device_dx11

DX11 backend for gfx.

Normalized Coordinates

Render	Depth	Texture

Binding Model

Writable storage bindings:

1. Binding: 0 .. D3D11_PS_CS_UAV_REGISTER_COUNT

Other bindings:

1. Shader stage: vs, fs, cs
2. Register: constant buffers (CBV), shader resources (SRV), samplers
3. Binding (tight)

Mirroring

TODO