fxaa_pass.hpp

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#pragma once
 
#include "../post_process_pass_base.hpp"
#include "../post_process_target.hpp"
#include "../shader_layout.hpp"
#include "../vulkan_common.hpp"
#include "../vulkan_pipeline.hpp"
 
#include <glm/glm.hpp>
#include <optional>
#include <vector>
 
namespace renderer {
class VulkanCore;
 
class FxaaPass : public IPostProcessPass {
public:
  FxaaPass(const VulkanCore& core, vk::Format ldr_format, vk::Extent2D extent);
 
  [[nodiscard]]
  auto name() const -> std::string_view override {
    return "FXAA";
  }
 
  auto record(vk::CommandBuffer cmd, uint32_t frame_index, vk::ImageView source_view) -> vk::ImageView override;
 
  void onResize(vk::Extent2D extent) override;
 
private:
  struct Params {
    glm::vec2 inverse_source_size {0.0f};
    float contrast_threshold = 0.0312f;
    float relative_threshold = 0.125f;
    float subpixel_blending = 0.75f;
    glm::vec2 pad0 {0.0f};
  };
 
  void createResources(const VulkanCore& core);
  void createTarget(const VulkanCore& core, vk::Extent2D extent);
 
  const VulkanCore* m_core = nullptr;
  vk::Format m_ldr_format = vk::Format::eUndefined;
 
  ShaderLayout m_shader_layout;
  VulkanPipeline m_pipeline;
 
  vk::raii::Sampler m_sampler = nullptr;
  std::vector<vk::raii::DescriptorSet> m_descriptor_sets;
  std::vector<vk::ImageView> m_bound_views;
 
  PostProcessTarget m_target;
};
 
}