post_process_target.hpp

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#pragma once
 
#include "vulkan_common.hpp"
 
#include <optional>
#include <string>
#include <string_view>
 
namespace renderer {
class VulkanCore;

class PostProcessTarget {
public:
  [[nodiscard]]
  static auto halfExtent(vk::Extent2D extent) noexcept -> vk::Extent2D {
    const uint32_t width = (extent.width + 1) / 2;
    const uint32_t height = (extent.height + 1) / 2;
    return {width > 0 ? width : 1u, height > 0 ? height : 1u};
  }
 
  void create(const VulkanCore& core, vk::Extent2D extent, vk::Format format, std::string_view debug_name);
 
  void beginScope(vk::CommandBuffer cmd) const;
 
  void endScope(vk::CommandBuffer cmd) const;
 
  [[nodiscard]]
  auto view() const -> vk::ImageView {
    return m_view.has_value() ? **m_view : vk::ImageView {};
  }
 
  [[nodiscard]]
  auto extent() const noexcept -> vk::Extent2D {
    return m_extent;
  }
 
  [[nodiscard]]
  auto isReady() const noexcept -> bool {
    return m_image.has_value() && m_view.has_value();
  }
 
private:
  std::optional<vma::raii::Image> m_image;
  std::optional<vk::raii::ImageView> m_view;
  vk::Extent2D m_extent {};
 
  mutable sync::ImageState m_state;
};
 
}