VkHostImportUpload.hpp

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#pragma once
 
#include <score_plugin_gfx_export.h>
 
#include <cstddef>
#include <cstdint>
#include <vector>
 
class QRhi;
class QRhiTexture;
class QRhiCommandBuffer;
 
namespace score::gfx::interop
{
 
SCORE_PLUGIN_GFX_EXPORT void* alignedSlotAlloc(std::size_t bytes, std::size_t alignment);
SCORE_PLUGIN_GFX_EXPORT void alignedSlotFree(void* p);
 
SCORE_PLUGIN_GFX_EXPORT void* importableAlloc(std::size_t bytes);
SCORE_PLUGIN_GFX_EXPORT void importableFree(void* p);
 
struct VkHostImportedBuffer
{
  void* buffer{};
  void* memory{};
  std::size_t importedBytes{};
};
 
SCORE_PLUGIN_GFX_EXPORT bool importHostPointerBuffer(
    QRhi& rhi, void* host, std::size_t bytes, unsigned bufferUsage,
    bool requireHostCoherent, VkHostImportedBuffer& out);
 
SCORE_PLUGIN_GFX_EXPORT void
releaseHostImportedBuffer(QRhi& rhi, VkHostImportedBuffer& buf);
 
class SCORE_PLUGIN_GFX_EXPORT VkHostImportUpload
{
public:
  ~VkHostImportUpload();
 
  static std::size_t requiredAlignment(QRhi& rhi) noexcept;
 
  bool init(QRhi& rhi, const std::vector<void*>& slots, std::size_t bytes);
  void release();
 
  bool valid() const noexcept { return !m_buffers.empty(); }
 
  bool copyToTexture(
      QRhiCommandBuffer& cb, QRhiTexture& tex, std::size_t slot, int width,
      int height, std::size_t srcOffset = 0,
      std::size_t rowPitchBytes = 0) noexcept;
 
private:
  struct Impl;
  Impl* m_d{};
  std::vector<void*> m_buffers; 
};
 
} // namespace score::gfx::interop