fxaa_filter.hpp

// SPDX-License-Identifier: MIT
#ifndef LIBSBX_POST_FXAA_FILTER_HPP_
#define LIBSBX_POST_FXAA_FILTER_HPP_
 
#include <libsbx/post/filter.hpp>
 
namespace sbx::post {
 
class fxaa_filter final : public filter {
 
  using base_type = filter;
 
  inline static constexpr auto default_shader_path = std::string_view{"engine://shaders/fxaa"};
 
public:
 
  fxaa_filter(const std::vector<graphics::attachment_description>& attachments, const std::string& in_image, const std::filesystem::path& path = default_shader_path)
  : base_type{attachments, path},
    _in_image{in_image} { }
 
  ~fxaa_filter() override = default;
 
  auto render(graphics::command_buffer& command_buffer) -> void override {
    EASY_BLOCK("fxaa_filter::render");
    SBX_PROFILE_SCOPE("fxaa_filter::render");
 
    auto& pipeline = base_type::pipeline();
    auto& descriptor_handler = base_type::descriptor_handler();
 
    auto& graphics_module = core::engine::get_module<graphics::graphics_module>();
 
    pipeline.bind(command_buffer);
 
    descriptor_handler.push("image", graphics_module.attachment(_in_image));
 
    if (!descriptor_handler.update(pipeline)) {
      return;
    }
 
    descriptor_handler.bind_descriptors(command_buffer);
 
    command_buffer.draw(3, 1, 0, 0);
  }
 
private:
 
  std::string _in_image;
  std::string _out_image;
 
}; // class blur_filter
 
} // namespace sbx::post 
 
#endif // LIBSBX_POST_FXAA_FILTER_HPP_