descriptor.hpp

// SPDX-License-Identifier: MIT
#ifndef LIBSBX_GRAPHICS_DESCRIPTOR_DESCRIPTOR_HPP_
#define LIBSBX_GRAPHICS_DESCRIPTOR_DESCRIPTOR_HPP_
 
#include <variant>
#include <memory>
#include <cinttypes>
 
#include <vulkan/vulkan.hpp>
 
namespace sbx::graphics {
 
class write_descriptor_set {
 
public:
 
  write_descriptor_set(const VkWriteDescriptorSet& write_descriptor_set, const std::vector<VkDescriptorImageInfo>& descriptor_infos) noexcept;
 
  write_descriptor_set(const VkWriteDescriptorSet& write_descriptor_set, const VkDescriptorBufferInfo& descriptor_info) noexcept;
 
  auto handle() const noexcept -> const VkWriteDescriptorSet&;
 
  operator const VkWriteDescriptorSet&() const noexcept;
 
  operator bool() const noexcept {
    return _write_descriptor_set.descriptorCount > 0u;
  }
 
private:
 
  VkWriteDescriptorSet _write_descriptor_set;
  // std::variant<VkDescriptorImageInfo, VkDescriptorBufferInfo> _descriptor_info;
  std::vector<VkDescriptorImageInfo> _descriptor_image_infos;
  std::unique_ptr<VkDescriptorBufferInfo> _descriptor_buffer_info;
 
}; // class write_descriptor_set
 
class descriptor {
 
public:
 
  descriptor() = default;
 
  virtual ~descriptor() = default;
 
  virtual auto write_descriptor_set(std::uint32_t binding, VkDescriptorType descriptor_type) const noexcept -> graphics::write_descriptor_set = 0;
 
}; // class descriptor
 
} // namespace sbx::graphics
 
#endif // LIBSBX_GRAPHICS_DESCRIPTOR_DESCRIPTOR_HPP_