DCOMPOSITION_BITMAP_INTERPOLATION_MODE enumeration (dcomptypes.h)

Specifies the interpolation mode to be used when a bitmap is composed with any transform where the pixels in the bitmap don't line up exactly one-to-one with pixels on screen.

Syntax

typedef enum DCOMPOSITION_BITMAP_INTERPOLATION_MODE {
  DCOMPOSITION_BITMAP_INTERPOLATION_MODE_NEAREST_NEIGHBOR = 0,
  DCOMPOSITION_BITMAP_INTERPOLATION_MODE_LINEAR = 1,
  DCOMPOSITION_BITMAP_INTERPOLATION_MODE_INHERIT = 0xffffffff
} ;

Constants

DCOMPOSITION_BITMAP_INTERPOLATION_MODE_NEAREST_NEIGHBOR Value: 0 Bitmaps are interpolated by using nearest-neighbor sampling.
DCOMPOSITION_BITMAP_INTERPOLATION_MODE_LINEAR Value: 1 Bitmaps are interpolated by using linear sampling.
DCOMPOSITION_BITMAP_INTERPOLATION_MODE_INHERIT Value: 0xffffffff Bitmaps are interpolated according to the mode established by the parent visual.

Remarks

The default interpolation mode for a visual is DCOMPOSITION_BITMAP_INTERPOLATION_MODE_INHERIT. If all visuals in a visual tree specify this mode, the default for all visuals is nearest neighbor sampling, which is the fastest mode.

A single visual can have any combination of visual properties. However, if a visual has the following combination of properties, the borders of the visual will default to DCOMPOSITION_BORDER_MODE_HARD.

• SetCompositeMode(DCOMPOSITION_COMPOSITE_MODE_DESTINATION_INVERT)
• SetBorderMode(DCOMPOSITION_BORDER_MODE_SOFT)
• SetBitmapInterpolationMode(DCOMPOSITION_BITMAP_INTERPOLATION_MODE_NEAREST_NEIGHBOR)

If you want a visual to be drawn with antialiasing, use DCOMPOSITION_BITMAP_INTERPOLATION_MODE_LINEAR for the content of the visual, and DCOMPOSITION_BORDER_MODE_SOFT for the edges.

Requirements

Requirement	Value
Minimum supported client	Windows 8 [desktop apps only]
Minimum supported server	Windows Server 2012 [desktop apps only]
Header	dcomptypes.h

See also

IDCompositionVisual::SetBitmapInterpolationMode