D2D1_SCALE_INTERPOLATION_MODE enumeration (d2d1effects.h)

The interpolation mode the Scale effect uses to scale the image. There are 6 scale modes that range in quality and speed.

Syntax

typedef enum D2D1_SCALE_INTERPOLATION_MODE {
  D2D1_SCALE_INTERPOLATION_MODE_NEAREST_NEIGHBOR,
  D2D1_SCALE_INTERPOLATION_MODE_LINEAR,
  D2D1_SCALE_INTERPOLATION_MODE_CUBIC,
  D2D1_SCALE_INTERPOLATION_MODE_MULTI_SAMPLE_LINEAR,
  D2D1_SCALE_INTERPOLATION_MODE_ANISOTROPIC,
  D2D1_SCALE_INTERPOLATION_MODE_HIGH_QUALITY_CUBIC,
  D2D1_SCALE_INTERPOLATION_MODE_FORCE_DWORD
} ;

Constants

 
D2D1_SCALE_INTERPOLATION_MODE_NEAREST_NEIGHBOR
Samples the nearest single point and uses that. This mode uses less processing time, but outputs the lowest quality image.
D2D1_SCALE_INTERPOLATION_MODE_LINEAR
Uses a four point sample and linear interpolation. This mode uses more processing time than the nearest neighbor mode, but outputs a higher quality image.
D2D1_SCALE_INTERPOLATION_MODE_CUBIC
Uses a 16 sample cubic kernel for interpolation. This mode uses the most processing time, but outputs a higher quality image.
D2D1_SCALE_INTERPOLATION_MODE_MULTI_SAMPLE_LINEAR
Uses 4 linear samples within a single pixel for good edge anti-aliasing. This mode is good for scaling down by small amounts on images with few pixels.
D2D1_SCALE_INTERPOLATION_MODE_ANISOTROPIC
Uses anisotropic filtering to sample a pattern according to the transformed shape of the bitmap.
D2D1_SCALE_INTERPOLATION_MODE_HIGH_QUALITY_CUBIC
Uses a variable size high quality cubic kernel to perform a pre-downscale the image if downscaling is involved in the transform matrix. Then uses the cubic interpolation mode for the final output.
D2D1_SCALE_INTERPOLATION_MODE_FORCE_DWORD

Requirements

   
Header d2d1effects.h