mojave man page for mpsimagelanczosscale

MPSImageLanczosScale(3) 				 MetalPerformanceShaders.framework				   MPSImageLanczosScale(3)

NAME
       MPSImageLanczosScale

SYNOPSIS
       #import <MPSImageResampling.h>

       Inherits MPSImageScale.

   Instance Methods
       (nonnull instancetype) - initWithDevice:
       (nullable instancetype) - initWithCoder:device:

   Additional Inherited Members
Detailed Description
       Resize an image and / or change its aspect ratio  The MPSImageLanczosScale filter can be used to resample an existing image using a
       different sampling frequency in each dimension. This can be used to enlarge or reduce the size of an image, or change the aspect ratio of
       an image. The filter uses a Lanczos resampling algorithm which typically produces better quality for photographs, but is slower than linear
       sampling using the GPU texture units. Lanczos downsampling does not require a low pass filter to be applied before it is used. Because the
       resampling function has negative lobes, Lanczos can result in ringing near sharp edges, making it less suitable for vector art.

Method Documentation
   - (nullable instancetype) initWithCoder: (NSCoder *__nonnull) aDecoder(nonnull id< MTLDevice >) device
       NSSecureCoding compatability  While the standard NSSecureCoding/NSCoding method -initWithCoder: should work, since the file can't know
       which device your data is allocated on, we have to guess and may guess incorrectly. To avoid that problem, use initWithCoder:device
       instead.

       Parameters:
	   aDecoder The NSCoder subclass with your serialized MPSKernel
	   device The MTLDevice on which to make the MPSKernel

       Returns:
	   A new MPSKernel object, or nil if failure.

       Reimplemented from MPSImageScale.

   - (nonnull instancetype) initWithDevice: (nonnull id< MTLDevice >) device
       Standard init with default properties per filter type

       Parameters:
	   device The device that the filter will be used on. May not be NULL.

       Returns:
	   a pointer to the newly initialized object. This will fail, returning nil if the device is not supported. Devices must be
	   MTLFeatureSet_iOS_GPUFamily2_v1 or later.

       Reimplemented from MPSImageScale.

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

Version MetalPerformanceShaders-100				  Thu Feb 8 2018					   MPSImageLanczosScale(3)