[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/capture/CFrameProcessorUtil.h

@@ -0,0 +1,47 @@
+/**
+ * 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 "postprocess/D12FrameFormat.h"
+
+class CPostProcessor;
+
+class CFrameProcessorUtil
+{
+public:
+  static bool FrameMetadataChanged(const D12FrameFormat& previous,
+    const D12FrameFormat& current);
+  static FrameType GetFrameType(DXGI_FORMAT format);
+  static bool ResourceDescMatches(const D3D12_RESOURCE_DESC& left,
+    const D3D12_RESOURCE_DESC& right, bool compareAlignment = true);
+  static void ClipDirtyRects(RECT dirtyRects[], unsigned * nbDirtyRects,
+    unsigned width, unsigned height);
+  static bool BuildCopyDamage(const CPostProcessor& postProcessor,
+    bool destinationNeedsFullCopy,
+    const RECT previousDirtyRects[], unsigned nbPreviousDirtyRects,
+    const RECT currentDirtyRects[], unsigned nbCurrentDirtyRects,
+    unsigned width, unsigned height,
+    RECT copyDirtyRects[], unsigned * nbCopyDirtyRects);
+  static void AccumulateDamage(
+    RECT pendingDirtyRects[], unsigned * nbPendingDirtyRects,
+    bool * hasPendingDamage, const RECT dirtyRects[],
+    unsigned nbDirtyRects);
+};