duckstation

duckstation, but archived from the revision just before upstream changed it to a proprietary software project, this version is the libre one
git clone https://git.neptards.moe/u3shit/duckstation.git
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d3d11_stream_buffer.h (1506B)

      1 // SPDX-FileCopyrightText: 2019-2024 Connor McLaughlin <stenzek@gmail.com>
      2 // SPDX-License-Identifier: (GPL-3.0 OR PolyForm-Strict-1.0.0)
      3 
      4 #pragma once
      5 
      6 #include "common/types.h"
      7 #include "common/windows_headers.h"
      8 
      9 #include <d3d11_1.h>
     10 #include <wrl/client.h>
     11 
     12 class D3D11StreamBuffer
     13 {
     14 public:
     15   template<typename T>
     16   using ComPtr = Microsoft::WRL::ComPtr<T>;
     17 
     18   D3D11StreamBuffer();
     19   D3D11StreamBuffer(ComPtr<ID3D11Buffer> buffer);
     20   ~D3D11StreamBuffer();
     21 
     22   ALWAYS_INLINE ID3D11Buffer* GetD3DBuffer() const { return m_buffer.Get(); }
     23   ALWAYS_INLINE ID3D11Buffer* const* GetD3DBufferArray() const { return m_buffer.GetAddressOf(); }
     24   ALWAYS_INLINE u32 GetSize() const { return m_size; }
     25   ALWAYS_INLINE u32 GetPosition() const { return m_position; }
     26   ALWAYS_INLINE bool IsMapped() const { return m_mapped; }
     27   ALWAYS_INLINE bool IsUsingMapNoOverwrite() const { return m_use_map_no_overwrite; }
     28 
     29   bool Create(D3D11_BIND_FLAG bind_flags, u32 min_size, u32 max_size);
     30   void Destroy();
     31 
     32   struct MappingResult
     33   {
     34     void* pointer;
     35     u32 buffer_offset;
     36     u32 index_aligned; // offset / alignment, suitable for base vertex
     37     u32 space_aligned; // remaining space / alignment
     38   };
     39 
     40   MappingResult Map(ID3D11DeviceContext1* context, u32 alignment, u32 min_size);
     41   void Unmap(ID3D11DeviceContext1* context, u32 used_size);
     42 
     43 private:
     44   ComPtr<ID3D11Buffer> m_buffer;
     45   u32 m_size = 0;
     46   u32 m_max_size = 0;
     47   u32 m_position = 0;
     48   bool m_use_map_no_overwrite = false;
     49   bool m_mapped = false;
     50 };