d3d11: Advertise support for shader model 4 compute shaders if compute shaders are supported.

dlls/d3d11/device.c

@@ -3779,7 +3779,17 @@ static HRESULT STDMETHODCALLTYPE d3d11_device_CheckFeatureSupport(ID3D11Device2
                 return E_INVALIDARG;
             }
 
-            options->ComputeShaders_Plus_RawAndStructuredBuffers_Via_Shader_4_x = FALSE;
+            wined3d_mutex_lock();
+            hr = wined3d_device_get_device_caps(device->wined3d_device, &wined3d_caps);
+            wined3d_mutex_unlock();
+            if (FAILED(hr))
+            {
+                WARN("Failed to get device caps, hr %#x.\n", hr);
+                return hr;
+            }
+
+            options->ComputeShaders_Plus_RawAndStructuredBuffers_Via_Shader_4_x
+                    = wined3d_caps.max_feature_level >= WINED3D_FEATURE_LEVEL_11;
             return S_OK;
         }