MPSImageAreaMax(3) MetalPerformanceShaders.framework MPSImageAreaMax(3)

MPSImageAreaMax

#import <MPSImageMorphology.h>

Inherits MPSUnaryImageKernel.

Inherited by MPSImageAreaMin.


(nonnull instancetype) - initWithDevice:kernelWidth:kernelHeight:
(nullable instancetype) - initWithCoder:device:
(nonnull instancetype) - initWithDevice:


NSUInteger kernelHeight
NSUInteger kernelWidth

MPSImageMorphology.h MetalPerformanceShaders

Copyright:

Copyright (c) 2015 Apple Inc. All rights reserved. MetalPerformanceShaders morphological operators

The MPSImageAreaMax kernel finds the maximum pixel value in a rectangular region centered around each pixel in the source image. If there are multiple channels in the source image, each channel is processed independently. The edgeMode property is assumed to always be MPSImageEdgeModeClamp for this filter.

- (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 MPSUnaryImageKernel.

- (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 MPSUnaryImageKernel.

- (nonnull instancetype) initWithDevice: (nonnull id< MTLDevice >) device(NSUInteger) kernelWidth(NSUInteger) kernelHeight

Set the kernel height and width

Parameters:

device The device the filter will run on
kernelWidth The width of the kernel. Must be an odd number.
kernelHeight The height of the kernel. Must be an odd number.

- kernelHeight [read], [nonatomic], [assign]

The height of the filter window. Must be an odd number.

- kernelWidth [read], [nonatomic], [assign]

The width of the filter window. Must be an odd number.

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Mon Jul 9 2018 Version MetalPerformanceShaders-119.3