text: #pragma once
  
  #include <btrc/core/context.h>
  #include <btrc/core/sampler.h>
  #include <btrc/utils/cmath/cmath.h>
  
  BTRC_BEGIN
  
  class FilmFilter : public Object
  {
  public:
  
      virtual CVec2f sample(Sampler &sampler) const = 0;
  };
  
  BTRC_END
  