DX12TextureManager.h

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#pragma once
 
#include "DX12Common.h"
#include "Resource/ResourceRef.h"
#include "Texture/BaseTexture.h"
#include "d3d12.h"
 
#include <unordered_map>
#include <vector>
 
namespace z8 {
 
class DX12TextureManager : public DX12Common {
  ComPtr<ID3D12DescriptorHeap> DescriptorHeap;
  unsigned DescriptorSize = 0;
  std::unordered_map<ResourceRef<BaseTexture>, uint32_t,
                     ResourceRefHash<BaseTexture>> Indices;
  std::vector<ComPtr<ID3D12Resource>> Resources;
  // 上传缓冲至少保留到初始化命令执行并同步，避免 CopyTextureRegion 读取失效内存。
  std::vector<ComPtr<ID3D12Resource>> Uploads;
 
public:
  explicit DX12TextureManager(DX12Render* render);
 
  void Bind() const;
  D3D12_GPU_DESCRIPTOR_HANDLE
  GetGPUDescriptor(ResourceRef<BaseTexture> texture) const;
  void Init();
};
 
} // namespace z8