src/effects/scratch_effect.h


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// Scratch effect - film scratch overlay post-process
// Reads input buffer, additively blends scratch_lines() on top.

#pragma once
#include "gpu/effect.h"
#include "gpu/wgpu_resource.h"

class Scratch : public Effect {
 public:
  Scratch(const GpuContext& ctx, const std::vector<std::string>& inputs,
          const std::vector<std::string>& outputs, float start_time,
          float end_time);

  void render(WGPUCommandEncoder encoder, const UniformsSequenceParams& params,
              NodeRegistry& nodes) override;

 private:
  RenderPipeline pipeline_;
  BindGroup bind_group_;
};