[idd] capture: execute texture frame graphs

idd/LGIdd/capture/CFrameExec.h

@@ -0,0 +1,71 @@
+/**
+ * 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 "Atomic.h"
+#include "CSRWLock.h"
+#include "capture/CFrameGraph.h"
+#include "capture/CFrameTex.h"
+#include "transport/ITexStage.h"
+
+#include <memory>
+
+class CInteropResource;
+class CTexHub;
+struct CD3D11Device;
+struct CD3D12Device;
+
+// Transactional executor for texture-backed transport routes. Every product
+// is materialized in executor-owned storage before the acquired IddCx surface
+// is released. A graph containing only legacy routes remains fully dormant.
+class CFrameExec final : public ITexStage
+{
+private:
+  struct Core;
+
+  mutable CSRWLock               m_lock;
+  std::shared_ptr<CD3D11Device>  m_d11;
+  std::shared_ptr<CD3D12Device>  m_d12;
+  CTexHub                      * m_hub = nullptr;
+  std::shared_ptr<Core>          m_active;
+  std::shared_ptr<Core>          m_pending;
+  std::atomic<uint64_t>          m_serial { 0 };
+
+  uint64_t NextSerial();
+
+public:
+  CFrameExec() = default;
+  ~CFrameExec();
+  CFrameExec(const CFrameExec&) = delete;
+  CFrameExec& operator=(const CFrameExec&) = delete;
+
+  bool Init(const std::shared_ptr<CD3D11Device>& d11,
+    const std::shared_ptr<CD3D12Device>& d12, CTexHub& hub);
+  void Reset();
+
+  CfgResult Prep(const CFrameGraph& graph) noexcept override;
+  void Commit() noexcept override;
+  void Abort() noexcept override;
+
+  TexResult Run(CInteropResource& src, const D12FrameFormat& format,
+    uint64_t captureTime, uint64_t postStart, FrameDamage damage,
+    const RECT * rects, unsigned count) noexcept;
+};