mpsimagedescriptor(3) [mojave man page]

MPSImageDescriptor(3)					 MetalPerformanceShaders.framework				     MPSImageDescriptor(3)

NAME

       MPSImageDescriptor

SYNOPSIS

       #import <MPSImage.h>

       Inherits NSObject.

   Class Methods
       (__nonnull instancetype) + imageDescriptorWithChannelFormat:width:height:featureChannels:
       (__nonnull instancetype) + imageDescriptorWithChannelFormat:width:height:featureChannels:numberOfImages:usage:

   Properties
       NSUInteger width
       NSUInteger height
       NSUInteger featureChannels
       NSUInteger numberOfImages
       MTLPixelFormat pixelFormat
       MPSImageFeatureChannelFormat channelFormat
       MTLCPUCacheMode cpuCacheMode
       MTLStorageMode storageMode
       MTLTextureUsage usage

Detailed Description
       MPSImage.h  MPSCore.framework

       Copyright:
	   Copyright (c) 2015-2017 Apple Inc. All rights reserved.  A MPSImage is a MTLTexture abstraction that allows for more than 4 channels,
	   and for temporary images.

       This depends on Metal.framework	A MPSImageDescriptor object describes a attributes of MPSImage and is used to create one (see MPSImage
       discussion below)

Method Documentation
   + (__nonnull instancetype) imageDescriptorWithChannelFormat: (MPSImageFeatureChannelFormat) channelFormat(NSUInteger) width(NSUInteger)
       height(NSUInteger) featureChannels
       Create a MPSImageDescriptor for a single read/write cnn image.

   + (__nonnull instancetype) imageDescriptorWithChannelFormat: (MPSImageFeatureChannelFormat) channelFormat(NSUInteger) width(NSUInteger)
       height(NSUInteger) featureChannels(NSUInteger) numberOfImages(MTLTextureUsage) usage
       Create a MPSImageDescriptor for a read/write cnn image with option to set usage and batch size (numberOfImages).

Property Documentation
   - channelFormat [read],  [write],  [nonatomic],  [assign]
       The storage format to use for each channel in the image.

   - cpuCacheMode [read],  [write],  [nonatomic],  [assign]
       Options to specify CPU cache mode of texture resource. Default = MTLCPUCacheModeDefaultCache

   - featureChannels [read],  [write],	[nonatomic],  [assign]
       The number of feature channels per pixel. Default = 1.

   - height [read],  [write],  [nonatomic],  [assign]
       The height of the CNN image.  The formal height of the CNN image in pixels. Default = 1.

   - numberOfImages [read],  [write],  [nonatomic],  [assign]
       The number of images for batch processing. Default = 1.

   - pixelFormat [read],  [nonatomic],	[assign]
       The MTLPixelFormat expected for the underlying texture.

   - storageMode [read],  [write],  [nonatomic],  [assign]
       To specify storage mode of texture resource.  Storage mode options:

       Default =   MTLStorageModeShared on iOS
		   MTLStorageModeManaged on Mac OSX
       MTLStorageModeShared not supported on Mac OSX.
       See Metal headers for synchronization requirements when using StorageModeManaged

   - usage [read],  [write],  [nonatomic],  [assign]
       Description of texture usage. Default = MTLTextureUsageShaderRead/Write

   - width [read],  [write],  [nonatomic],  [assign]
       The width of the CNN image.  The formal width of the CNN image in pixels. Default = 1.

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

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

Check Out this Related Man Page

MPSCNNLossDataDescriptor(3)				 MetalPerformanceShaders.framework			       MPSCNNLossDataDescriptor(3)

NAME

       MPSCNNLossDataDescriptor

SYNOPSIS

       #import <MPSCNNLoss.h>

       Inherits NSObject, and <NSCopying>.

   Instance Methods
       (nonnull instancetype) - init

   Class Methods
       (nullable MPSCNNLossDataDescriptor *) + cnnLossDataDescriptorWithData:layout:size:

   Properties
       MPSDataLayout layout
       MTLSize size
       NSUInteger bytesPerRow
       NSUInteger bytesPerImage

Detailed Description
       This depends on Metal.framework.  The MPSCNNLossDataDescriptor specifies a loss data descriptor. The same descriptor can be used to
       initialize both the labels and the optional weights data.

Method Documentation
   + (nullable MPSCNNLossDataDescriptor*) cnnLossDataDescriptorWithData: (NSData *__nonnull) data(MPSDataLayout) layout(MTLSize) size
       Make a descriptor loss data. The bytesPerRow and bytesPerImage are automatically calculated assuming a dense array. If it is not a dense
       array, adjust bytesPerRow and bytesPerImage to the right value by changing properties.

       Parameters:
	   data The per-element loss data. The data must be in floating point format.
	   layout The data layout of loss data.
	   size The size of loss data.

       Returns:
	   A valid MPSCNNLossDataDescriptor object or nil, if failure.

   - (nonnull instancetype) init
Property Documentation
   - bytesPerImage [read],  [write],  [nonatomic],  [assign]
       Slice bytes of loss data.  This parameter specifies the slice bytes of loss data.

   - bytesPerRow [read],  [write],  [nonatomic],  [assign]
       Row bytes of loss data.	This parameter specifies the row bytes of loss data.

   - layout [read],  [nonatomic],  [assign]
       Data layout of loss data. See MPSImage.h for more information.  This parameter specifies the layout of loss data.

   - size [read],  [nonatomic],  [assign]
       Size of loss data: (width, height, feature channels}.  This parameter specifies the size of loss data.

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

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

Linux and UNIX Man Pages

mpsimagedescriptor(3) [mojave man page]

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