[idd] rewrite to support DirectX12 copy

idd/LGIdd/CD3D11Device.cpp

@@ -0,0 +1,68 @@
+/**
+ * Looking Glass
+ * Copyright © 2017-2025 The Looking Glass Authors
+ * https://looking-glass.io
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "CD3D11Device.h"
+#include "Debug.h"
+
+HRESULT CD3D11Device::Init()
+{
+  HRESULT hr = CreateDXGIFactory2(0, IID_PPV_ARGS(&m_factory));
+  if (FAILED(hr))
+    return hr;
+
+  hr = m_factory->EnumAdapterByLuid(m_adapterLuid, IID_PPV_ARGS(&m_adapter));
+  if (FAILED(hr))
+    return hr;
+  
+  // only 11.1 supports DX12 interoperabillity
+  static const D3D_FEATURE_LEVEL featureLevels[] =
+  {
+    D3D_FEATURE_LEVEL_11_1
+  };
+  D3D_FEATURE_LEVEL featureLevel;
+
+  ComPtr<ID3D11Device> device;
+  ComPtr<ID3D11DeviceContext> context;
+  hr = D3D11CreateDevice(
+    m_adapter.Get(),
+    D3D_DRIVER_TYPE_UNKNOWN,
+    nullptr,
+    D3D11_CREATE_DEVICE_BGRA_SUPPORT |  D3D11_CREATE_DEVICE_DEBUG,
+    featureLevels,
+    ARRAYSIZE(featureLevels),
+    D3D11_SDK_VERSION,
+    &device,
+    &featureLevel,
+    &context);
+  if (FAILED(hr))
+    return hr;
+
+  DBGPRINT("Feature Level: 0x%x", featureLevel);
+
+  hr = device.As(&m_device);
+  if (FAILED(hr))
+    return hr;
+
+  hr = context.As(&m_context);
+  if (FAILED(hr))
+    return hr;
+
+  return S_OK;
+}