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PremultiplyEffect Class
[NoComposition] Converts an image from unpremultiplied to premultiplied alpha format.
Inheritance Hierarchy
SystemObject
  Microsoft.Graphics.Canvas.EffectsPremultiplyEffect

Namespace:  Microsoft.Graphics.Canvas.Effects
Assembly:  Microsoft.Graphics.Canvas (in Microsoft.Graphics.Canvas.dll) Version: 0.0.0.0
Syntax
C#
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public sealed class PremultiplyEffect : ICanvasEffect, 
	IGraphicsEffect, IGraphicsEffectSource, ICanvasImage, IDisposable

The PremultiplyEffect type exposes the following members.

Constructors
  NameDescription
Public methodPremultiplyEffect
Initializes a new instance of the PremultiplyEffect class.
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Properties
  NameDescription
Public propertyBufferPrecision
Specifies what precision to use for intermediate buffers when drawing this effect.
Public propertyCacheOutput
Enables caching the output from drawing this effect.
Public propertyName
Attaches a user-defined name string to the effect.
Public propertySource
Gets or sets the input source for Premultiply effect.
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Methods
  NameDescription
Public methodDispose
Releases all resources used by the effect.
Public methodGetBounds(ICanvasResourceCreator)
Retrieves the bounds of this PremultiplyEffect.
Public methodGetBounds(ICanvasResourceCreator, Matrix3x2)
Retrieves the bounds of this PremultiplyEffect.
Public methodGetInvalidRectangles
Queries what regions of the effect output have changed since it was last drawn.
Public methodCode exampleGetRequiredSourceRectangle
Queries what part of an effect source image is needed to draw an output region.
Public methodGetRequiredSourceRectangles
Queries what parts of the effect source images are needed to draw an output region.
Public methodInvalidateSourceRectangle
Notifies the effect that one of its source images has changed.
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Remarks

Supported by Win2D but not Windows.UI.Composition.

This Windows Runtime type corresponds to the D2D Premultiply effect.

See Also