descriptor_writer.hpp

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#pragma once
 
#include "vulkan_common.hpp"
 
#include <cstdint>
#include <deque>
#include <span>
#include <vector>
 
namespace renderer {
 
class DescriptorWriter {
public:
  auto buffer(
      vk::DescriptorSet set, uint32_t binding, vk::DescriptorType type, vk::Buffer buffer, vk::DeviceSize range = VK_WHOLE_SIZE,
      vk::DeviceSize offset = 0
  ) -> DescriptorWriter&;
 
  auto image(
      vk::DescriptorSet set, uint32_t binding, vk::DescriptorType type, vk::Sampler sampler, vk::ImageView view,
      vk::ImageLayout layout
  ) -> DescriptorWriter&;
 
  auto
      imageArray(vk::DescriptorSet set, uint32_t binding, vk::DescriptorType type, std::span<const vk::DescriptorImageInfo> infos)
          -> DescriptorWriter&;
 
  auto accelerationStructure(vk::DescriptorSet set, uint32_t binding, vk::AccelerationStructureKHR structure)
      -> DescriptorWriter&;
 
  void flush(const vk::raii::Device& device);
 
private:
  std::vector<vk::WriteDescriptorSet> m_writes;
 
  // Deques since writes point into these and a deque never moves its elements
  std::deque<vk::DescriptorBufferInfo> m_buffer_infos;
  std::deque<std::vector<vk::DescriptorImageInfo>> m_image_infos;
  std::deque<vk::AccelerationStructureKHR> m_structures;
  std::deque<vk::WriteDescriptorSetAccelerationStructureKHR> m_structure_writes;
};
 
}