text: //
  //  MTIColorHalftoneFilter.h
  //  MetalPetal
  //
  //  Created by Yu Ao on 17/01/2018.
  //
  
  #import "MTIUnaryImageRenderingFilter.h"
  #import <simd/simd.h>
  
  @interface MTIColorHalftoneFilter : MTIUnaryImageRenderingFilter
  
  @property (nonatomic) float scale;
  
  @property (nonatomic) simd_float4 angles;
  
  @end
  