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D2D1_INTERPOLATION_MODE enumeration (d2d1_1.h)

This is used to specify the quality of image scaling with ID2D1DeviceContext::DrawImage and with the 2D affine transform effect.

Syntax

typedef enum D2D1_INTERPOLATION_MODE {
  D2D1_INTERPOLATION_MODE_NEAREST_NEIGHBOR,
  D2D1_INTERPOLATION_MODE_LINEAR,
  D2D1_INTERPOLATION_MODE_CUBIC,
  D2D1_INTERPOLATION_MODE_MULTI_SAMPLE_LINEAR,
  D2D1_INTERPOLATION_MODE_ANISOTROPIC,
  D2D1_INTERPOLATION_MODE_HIGH_QUALITY_CUBIC,
  D2D1_INTERPOLATION_MODE_FORCE_DWORD = 0xffffffff
} ;

Constants

 
D2D1_INTERPOLATION_MODE_NEAREST_NEIGHBOR
Samples the nearest single point and uses that exact color. This mode uses less processing time, but outputs the lowest quality image.
D2D1_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_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_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_INTERPOLATION_MODE_ANISOTROPIC
Uses anisotropic filtering to sample a pattern according to the transformed shape of the bitmap.
D2D1_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_INTERPOLATION_MODE_FORCE_DWORD
Value: 0xffffffff

Requirements

Requirement Value
Minimum supported client Windows 8 and Platform Update for Windows 7 [desktop apps | UWP apps]
Minimum supported server Windows Server 2012 and Platform Update for Windows Server 2008 R2 [desktop apps | UWP apps]
Header d2d1_1.h

See also

ID2D1DeviceContext::DrawImage