[Bug 46817] New: Steam Big Picture needs d3d11_device_CreateDeviceContextState

https://bugs.winehq.org/show_bug.cgi?id=46817

Bug ID: 46817
           Summary: Steam Big Picture needs
                    d3d11_device_CreateDeviceContextState
           Product: Wine
           Version: 4.2
          Hardware: x86
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: directx-d3d
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Split from bug 44120.

Big picture currently errors with
> Assertion Failed: No D2D device created, possible no GPU supporting D3D10_FEATURE_LEVEL_9_1 or higher was found? Can't create surface

The problem is fixed by adding a stub like

##########
static HRESULT STDMETHODCALLTYPE d3d11_device_CreateDeviceContextState(...)
{
    *chosen_feature_level = feature_levels[0];

return S_OK;
}
##########

This makes big picture mode open, but you still have a blackscreen due to
missing d3d10 effects support. But judging from the sounds, it atleast works
instead of crashing.