MPSImageConversion(3)  MetalPerformanceShaders.framework MPSImageConversion(3)

NAME

       MPSImageConversion

SYNOPSIS

       #import <MPSImageConversion.h>

       Inherits MPSUnaryImageKernel.

   Instance Methods
       (nonnull instancetype) -
           initWithDevice:srcAlpha:destAlpha:backgroundColor:conversionInfo:

   Properties
       MPSAlphaType sourceAlpha
       MPSAlphaType destinationAlpha

   Additional Inherited Members

Detailed Description

       MPSImageConversions.h  MetalPerformanceShaders.framework

       Copyright:
           Copyright (c) 2015 Apple Inc. All rights reserved.
           MetalPerformanceShaders conversion filters
           MPS_CLASS_AVAILABLE_STARTING

       The MPSImageConversion filter performs a conversion from source to
       destination

Method Documentation

   - (nonnull instancetype) initWithDevice: (nonnull id< MTLDevice >)
       device(MPSAlphaType) srcAlpha(MPSAlphaType) destAlpha(nullable CGFloat
       *) backgroundColor(nullable CGColorConversionInfoRef) conversionInfo
       Create a converter that can convert texture colorspace, alpha and
       texture format  Create a converter that can convert texture colorspace,
       alpha and MTLPixelFormat. Optimized cases exist for NULL color space
       converter and no alpha conversion.

       Parameters:
           device The device the filter will run on
           srcAlpha The alpha encoding for the source texture
           destAlpha The alpha encoding for the destination texture
           backgroundColor An array of CGFloats giving the background color to
           use when flattening an image. The color is in the source
           colorspace. The length of the array is the number of color channels
           in the src colorspace. If NULL, use {0}.
           conversionInfo The colorspace conversion to use. May be NULL,
           indicating no color space conversions need to be done.

       Returns:
           An initialized MPSImageConversion object.

Property Documentation

   - destinationAlpha [read],  [nonatomic],  [assign]
       Premultiplication description for the destinationAlpha texture
       Colorspace conversion operations produce non-premultiplied data. Use
       this property to tag cases where premultiplied results are required. If
       MPSPixelAlpha_AlphaIsOne is used, the alpha channel will be set to 1.
       Default: MPSPixelAlpha_AlphaIsOne

   - sourceAlpha [read],  [nonatomic],  [assign]
       Premultiplication description for the source texture  Most colorspace
       conversion operations can not work directly on premultiplied data. Use
       this property to tag premultiplied data so that the source texture can
       be unpremultiplied prior to application of these transforms. Default:
       MPSPixelAlpha_AlphaIsOne

Author

       Generated automatically by Doxygen for
       MetalPerformanceShaders.framework from the source code.





Version MetalPerformanceShaders-Thu2Jul 13 2017          MPSImageConversion(3)


Mac OS X 10.13.1 - Generated Tue Nov  7 06:10:21 CST 2017