[idd] project: organize driver sources by responsibility

Group the IDD sources and Visual Studio filters by subsystem.

Split the device and swap-chain implementations into focused units,
rename the context classes, and reduce header coupling.

idd/LGIdd/d3d/CInteropResource.h

@@ -0,0 +1,73 @@
+/**
+ * Looking Glass
+ * Copyright © 2017-2026 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
+ */
+
+#pragma once
+
+#include <Windows.h>
+#include <wdf.h>
+#include <wrl.h>
+#include <memory>
+
+#include "d3d/CD3D11Device.h"
+#include "d3d/CD3D12Device.h"
+#include "d3d/CD3D12CommandQueue.h"
+
+using namespace Microsoft::WRL;
+
+#define LG_MAX_DIRTY_RECTS 256
+
+class CInteropResource
+{
+private:
+  std::shared_ptr<CD3D11Device> m_dx11Device;
+  std::shared_ptr<CD3D12Device> m_dx12Device;
+
+  // This value is likely released. It is only used to check if the supplied
+  // texture is different; do not rely on it pointing to valid memory.
+  void * m_srcTex;
+
+  ComPtr<ID3D12Resource > m_d12Res;
+  D3D11_TEXTURE2D_DESC    m_format;
+  ComPtr<ID3D11Fence    > m_d11Fence;
+  ComPtr<ID3D12Fence    > m_d12Fence;
+  UINT64                  m_fenceValue;
+  bool                    m_ready;
+
+  RECT     m_dirtyRects[LG_MAX_DIRTY_RECTS];
+  unsigned m_nbDirtyRects;
+
+public:
+  bool Init(std::shared_ptr<CD3D11Device> dx11Device,
+    std::shared_ptr<CD3D12Device> dx12Device,
+    ComPtr<ID3D11Texture2D> srcTex);
+  void Reset();
+
+  bool IsReady() const { return m_ready; }
+  bool Compare(const ComPtr<ID3D11Texture2D>& srcTex) const;
+  bool Signal();
+  bool Sync(CD3D12CommandSlot& slot);
+  void SetFullDamage();
+  void SetDirtyRects(const RECT * dirtyRects, unsigned nbDirtyRects);
+
+  const ComPtr<ID3D12Resource>& GetRes() const { return m_d12Res; }
+  const D3D11_TEXTURE2D_DESC& GetFormat() const { return m_format; }
+  const RECT * GetDirtyRects() const { return m_dirtyRects; }
+  unsigned GetDirtyRectCount() const { return m_nbDirtyRects; }
+};