[idd] rewrite to support DirectX12 copy

idd/LGIdd/CInteropResourcePool.cpp

@@ -0,0 +1,47 @@
+#include "CInteropResourcePool.h"
+#include "Debug.h"
+
+void CInteropResourcePool::Init(std::shared_ptr<CD3D11Device> dx11Device, std::shared_ptr<CD3D12Device> dx12Device)
+{
+  Reset();
+  m_dx11Device = dx11Device;
+  m_dx12Device = dx12Device;
+}
+
+void CInteropResourcePool::Reset()
+{
+  for (unsigned i = 0; i < POOL_SIZE; ++i)
+    m_pool[i].Reset();
+  m_dx11Device.reset();
+  m_dx12Device.reset();
+}
+
+CInteropResource* CInteropResourcePool::Get(ComPtr<ID3D11Texture2D> srcTex)
+{
+  CInteropResource * res;
+  unsigned freeSlot = POOL_SIZE;
+  for (unsigned i = 0; i < POOL_SIZE; ++i)
+  {
+    res = &m_pool[i];
+    if (!res->IsReady())
+    {
+      freeSlot = min(freeSlot, i);
+      continue;
+    }
+
+    if (res->Compare(srcTex))
+      return res;
+  }
+
+  if (freeSlot == POOL_SIZE)
+  {
+    DBGPRINT("Interop Resouce Pool Full");
+    return nullptr;
+  }
+
+  res = &m_pool[freeSlot];
+  if (!res->Init(m_dx11Device, m_dx12Device, srcTex))
+    return nullptr;
+
+  return res;
+}