Program Listing for File D3D12ScopedCommandBuffer.cpp

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#include "D3D12/D3D12ScopedCommandBuffer.h"
#include "D3D12/D3D12Macros.h"
#include "Log/Log.h"


namespace Azura {
namespace D3D12 {

D3D12ScopedCommandBuffer::D3D12ScopedCommandBuffer(const Microsoft::WRL::ComPtr<ID3D12Device>& device,
  D3D12_COMMAND_LIST_TYPE commandListType,
  const Log& log_D3D12RenderSystem)
  : m_commandListType(commandListType),
    m_fenceEvent() {

  VERIFY_D3D_OP(log_D3D12RenderSystem, device->CreateCommandAllocator(m_commandListType, IID_PPV_ARGS(&
    m_commandAllocator)), "Failed to create command allocator");
}

void D3D12ScopedCommandBuffer::CreateGraphicsCommandList(const Microsoft::WRL::ComPtr<ID3D12Device>& device, ID3D12PipelineState* pipelineState,
  const Log& log_D3D12RenderSystem) {
  VERIFY_D3D_OP(log_D3D12RenderSystem, device->CreateCommandList(0, m_commandListType, m_commandAllocator.Get(), pipelineState, IID_PPV_ARGS(&m_commandList)), "Failed to create command allocator");
}

ID3D12GraphicsCommandList* D3D12ScopedCommandBuffer::GetGraphicsCommandList() const {
  return m_commandList.Get();
}

void D3D12ScopedCommandBuffer::Execute(const Microsoft::WRL::ComPtr<ID3D12Device>& device, ID3D12CommandQueue* commandQueue, const Log& log_D3D12RenderSystem) {

  VERIFY_D3D_OP(log_D3D12RenderSystem, device->CreateFence(m_fenceValue, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&m_fence)
  ), "Failed to create fence");
  m_fenceValue++;

  // Create an event handle to use for frame synchronization.
  m_fenceEvent = CreateEvent(nullptr, FALSE, FALSE, nullptr);
  if (m_fenceEvent == nullptr) {
    VERIFY_D3D_OP(log_D3D12RenderSystem, HRESULT_FROM_WIN32(GetLastError()), "Fence Event Null");
  }

  ID3D12CommandList* ppCommandLists[] = { m_commandList.Get() };
  commandQueue->ExecuteCommandLists(1, ppCommandLists); // NOLINT
}

void D3D12ScopedCommandBuffer::WaitForComplete(ID3D12CommandQueue* commandQueue, const Log& log_D3D12RenderSystem) {
  const U32 fence = m_fenceValue;
  VERIFY_D3D_OP(log_D3D12RenderSystem, commandQueue->Signal(m_fence.Get(), m_fenceValue), "Fence wait failed");
  m_fenceValue++;

  // Wait until the previous frame is finished.
  VERIFY_D3D_OP(log_D3D12RenderSystem, m_fence->SetEventOnCompletion(fence, m_fenceEvent), "Failed to set event completion on Fence");
  WaitForSingleObject(m_fenceEvent, INFINITE);
}

} // namespace D3D12
} // namespace Azura