dolphin/Source/Core/VideoBackends/D3D/DXTexture.h

// Copyright 2017 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.

#pragma once

#include "Common/CommonTypes.h"

#include "VideoCommon/AbstractStagingTexture.h"
#include "VideoCommon/AbstractTexture.h"

class D3DTexture2D;

namespace DX11
{
class DXTexture final : public AbstractTexture
{
public:
  explicit DXTexture(const TextureConfig& tex_config);
  ~DXTexture();

  void Bind(unsigned int stage) override;
  void Unmap() override;

  void CopyRectangleFromTexture(const AbstractTexture* source,
                                const MathUtil::Rectangle<int>& srcrect,
                                const MathUtil::Rectangle<int>& dstrect) override;
  void Load(u32 level, u32 width, u32 height, u32 row_length, const u8* buffer,
            size_t buffer_size) override;

  D3DTexture2D* GetRawTexIdentifier() const;

private:
  std::optional<RawTextureInfo> MapFullImpl() override;
  std::optional<RawTextureInfo> MapRegionImpl(u32 level, u32 x, u32 y, u32 width,
                                              u32 height) override;

  D3DTexture2D* m_texture;
  ID3D11Texture2D* m_staging_texture = nullptr;
};

class DXStagingTexture final : public AbstractStagingTexture
{
public:
  DXStagingTexture() = delete;
  ~DXStagingTexture();

  void CopyFromTexture(const AbstractTexture* src, const MathUtil::Rectangle<int>& src_rect,
                       u32 src_layer, u32 src_level,
                       const MathUtil::Rectangle<int>& dst_rect) override;
  void CopyToTexture(const MathUtil::Rectangle<int>& src_rect, AbstractTexture* dst,
                     const MathUtil::Rectangle<int>& dst_rect, u32 dst_layer,
                     u32 dst_level) override;

  bool Map() override;
  void Unmap() override;
  void Flush() override;

  static std::unique_ptr<DXStagingTexture> Create(StagingTextureType type,
                                                  const TextureConfig& config);

private:
  DXStagingTexture(StagingTextureType type, const TextureConfig& config, ID3D11Texture2D* tex);

  ID3D11Texture2D* m_tex = nullptr;
};

}  // namespace DX11