// This file is part of the 64k demo project.
// It declares the GaussianBlurEffect.

#pragma once

#include "gpu/effect.h"
#include "gpu/uniform_helper.h"

// Parameters for GaussianBlurEffect (set at construction time)
struct GaussianBlurParams {
  float strength = 1.0f; // Default
  float strength_audio = 0.5f; // how much to pulse with audio
  float stretch = 1.f;   // y/x axis ratio
  float _pad = 0.;
};
static_assert(sizeof(GaussianBlurParams) == 16,
              "GaussianBlurParams must be 16 bytes for WGSL alignment");

class GaussianBlurEffect : public PostProcessEffect {
 public:
  // Backward compatibility constructor (uses default params)
  GaussianBlurEffect(const GpuContext& ctx);
  // New parameterized constructor
  GaussianBlurEffect(const GpuContext& ctx, const GaussianBlurParams& params);
  void render(WGPURenderPassEncoder pass,
              const CommonPostProcessUniforms& uniforms) override;
  void update_bind_group(WGPUTextureView input_view) override;

 private:
  GaussianBlurParams params_;
  UniformBuffer<GaussianBlurParams> params_buffer_;
};