taa_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 <array>
#include <glm/glm.hpp>
#include <vector>
 
namespace renderer {
class VulkanCore;
 
class TaaPass : public IPostProcessPass {
public:
  static constexpr uint32_t k_render_mode_motion = 26;
 
  TaaPass(const VulkanCore& core, vk::Format scene_format, vk::Extent2D extent);
 
  [[nodiscard]]
  auto name() const -> std::string_view override {
    return "TAA";
  }
 
  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::mat4 reprojection {1.0f};
    glm::vec4 texel {0.0f};
    glm::vec4 tuning {0.0f};
  };
 
  void createResources(const VulkanCore& core);
  void createTargets(const VulkanCore& core, vk::Extent2D extent);
 
  const VulkanCore* m_core = nullptr;
  vk::Format m_scene_format = vk::Format::eUndefined;
 
  ShaderLayout m_shader_layout;
  VulkanPipeline m_pipeline;
 
  vk::raii::Sampler m_linear_sampler = nullptr;
  vk::raii::Sampler m_point_sampler = nullptr;
 
  std::vector<vk::raii::DescriptorSet> m_descriptor_sets;
  std::vector<std::array<vk::ImageView, 2>> m_bound_views;

  std::array<PostProcessTarget, 2> m_targets;
  uint32_t m_write = 0;
 
  bool m_history_valid = false;
  uint64_t m_last_sequence = 0;
  glm::mat4 m_last_view_projection {1.0f};
};
 
}