[idd] rewrite to support DirectX12 copy

idd/LGIdd/CFrameBufferResource.cpp

@@ -0,0 +1,91 @@
+#include "CFrameBufferResource.h"
+#include "CSwapChainProcessor.h"
+#include "Debug.h"
+
+bool CFrameBufferResource::Init(CSwapChainProcessor * swapChain, uint8_t * base, size_t size)
+{
+  if (size > swapChain->GetDevice()->GetMaxFrameSize())
+  {
+    DBGPRINT("Frame size of %lu is too large to fit in available shared ram");
+    return false;
+  }
+
+  // nothing to do if the resource already exists and is large enough
+  if (m_base == base && m_size >= size)
+    return true;
+
+  Reset();
+
+  D3D12_RESOURCE_DESC desc = {};
+  desc.Dimension          = D3D12_RESOURCE_DIMENSION_BUFFER;
+  desc.Width              = size;
+  desc.Height             = 1;
+  desc.DepthOrArraySize   = 1;
+  desc.MipLevels          = 1;
+  desc.Format             = DXGI_FORMAT_UNKNOWN;
+  desc.SampleDesc.Count   = 1;
+  desc.SampleDesc.Quality = 0;
+  desc.Layout             = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+  desc.Flags              = D3D12_RESOURCE_FLAG_NONE;
+
+  HRESULT hr;
+  const WCHAR * resName;
+
+  if (swapChain->GetD3D12Device()->IsIndirectCopy())
+  {
+    DBGPRINT("Creating standard resource for %p", base);
+    D3D12_HEAP_PROPERTIES heapProps = {};
+    heapProps.Type                 = D3D12_HEAP_TYPE_READBACK;
+    heapProps.CPUPageProperty      = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
+    heapProps.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
+    heapProps.CreationNodeMask     = 1;
+    heapProps.VisibleNodeMask      = 1;
+
+    hr = swapChain->GetD3D12Device()->GetDevice()->CreateCommittedResource(
+      &heapProps,
+      D3D12_HEAP_FLAG_NONE,
+      &desc,
+      D3D12_RESOURCE_STATE_COPY_DEST,
+      NULL,
+      IID_PPV_ARGS(&m_res)
+    );
+    resName = L"STAGING";
+  }
+  else
+  {
+    DBGPRINT("Creating ivshmem resource for %p", base);
+    desc.Alignment = D3D12_DEFAULT_RESOURCE_PLACEMENT_ALIGNMENT;
+    desc.Flags     = D3D12_RESOURCE_FLAG_ALLOW_CROSS_ADAPTER;
+
+    hr = swapChain->GetD3D12Device()->GetDevice()->CreatePlacedResource(
+      swapChain->GetD3D12Device()->GetHeap().Get(),
+      (uintptr_t)base - (uintptr_t)swapChain->GetDevice()->GetIVSHMEM().GetMem(),
+      &desc,
+      D3D12_RESOURCE_STATE_COPY_DEST,
+      NULL,
+      IID_PPV_ARGS(&m_res)
+    );
+    resName = L"IVSHMEM";
+  }
+
+  if (FAILED(hr))
+  {
+    DBGPRINT_HR(hr, "Failed to create the FrameBuffer ID3D12Resource");
+    return false;
+  }
+
+  m_res->SetName(resName);
+
+  m_base  = base;
+  m_size  = size;
+  m_valid = true;
+  return true;
+}
+
+void CFrameBufferResource::Reset()
+{
+  m_base = nullptr;
+  m_size = 0;
+  m_res.Reset();
+  m_valid = false;
+}