Package apple.metalperformanceshaders

Class MPSCNNUpsamplingGradient

  • All Implemented Interfaces:
    NSCoding, NSCopying, NSSecureCoding, NSObject
    Direct Known Subclasses:
    MPSCNNUpsamplingBilinearGradient, MPSCNNUpsamplingNearestGradient
    public class MPSCNNUpsamplingGradient
extends MPSCNNGradientKernel
    MPSCNNUpsamplingGradient [@dependency] This depends on Metal.framework The MPSCNNUpsamplingGradient filter is used for training. It is the backward filter for the MPSCNNUpsampling filter. It operates on the gradient input, specifically, it reduces the size of the gradient input in the x and y dimensions. The number of output feature channels remains the same as the number of input feature channels. The scaleFactor must be an integer value >= 1. The default value is 1. If scaleFactor == 1, the filter acts as a copy kernel. Nearest and bilinear variants are supported. For example, for the nearest variant with scaleFactorX = scaleFactorY = 2, the forward pass produced the following output: Input: Output: a a b b a b a a b b c d c c d d c c d d To upsample the image, the input data is replicated. And, the backward pass for the above froward pass is computed in the following way: Input: Output: a1 a2 b1 b2 a2 a3 b3 b4 x y c1 c2 d1 d2 z w c3 c4 d3 d4 where x = a1 + a2 + a3 + a4 y = b1 + b2 + b3 + b4 z = c1 + c2 + c3 + c4 w = d1 + d2 + d3 + d4

    • Constructor Detail

      • MPSCNNUpsamplingGradient

        protected MPSCNNUpsamplingGradient​(org.moe.natj.general.Pointer peer)

    • Method Detail

      • accessInstanceVariablesDirectly

        public static boolean accessInstanceVariablesDirectly()

      • allocWithZone

        public static java.lang.Object allocWithZone​(org.moe.natj.general.ptr.VoidPtr zone)

      • automaticallyNotifiesObserversForKey

        public static boolean automaticallyNotifiesObserversForKey​(java.lang.String key)

      • cancelPreviousPerformRequestsWithTarget

        public static void cancelPreviousPerformRequestsWithTarget​(java.lang.Object aTarget)

      • cancelPreviousPerformRequestsWithTargetSelectorObject

        public static void cancelPreviousPerformRequestsWithTargetSelectorObject​(java.lang.Object aTarget,
                                                                         org.moe.natj.objc.SEL aSelector,
                                                                         java.lang.Object anArgument)

      • classFallbacksForKeyedArchiver

        public static NSArray<java.lang.String> classFallbacksForKeyedArchiver()

      • classForKeyedUnarchiver

        public static org.moe.natj.objc.Class classForKeyedUnarchiver()

      • debugDescription_static

        public static java.lang.String debugDescription_static()

      • description_static

        public static java.lang.String description_static()

      • hash_static

        public static long hash_static()

      • initWithCoderDevice

        public MPSCNNUpsamplingGradient initWithCoderDevice​(NSCoder aDecoder,
                                                    java.lang.Object device)
        Description copied from class: MPSCNNGradientKernel
        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.
        Overrides:
        initWithCoderDevice in class MPSCNNGradientKernel
        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.

      • initWithDevice

        public MPSCNNUpsamplingGradient initWithDevice​(java.lang.Object device)
        Description copied from class: MPSCNNGradientKernel
        Standard init with default properties per filter type
        Overrides:
        initWithDevice in class MPSCNNGradientKernel
        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.

      • instanceMethodSignatureForSelector

        public static NSMethodSignature instanceMethodSignatureForSelector​(org.moe.natj.objc.SEL aSelector)

      • instancesRespondToSelector

        public static boolean instancesRespondToSelector​(org.moe.natj.objc.SEL aSelector)

      • isSubclassOfClass

        public static boolean isSubclassOfClass​(org.moe.natj.objc.Class aClass)

      • keyPathsForValuesAffectingValueForKey

        public static NSSet<java.lang.String> keyPathsForValuesAffectingValueForKey​(java.lang.String key)

      • new_objc

        public static java.lang.Object new_objc()

      • resolveClassMethod

        public static boolean resolveClassMethod​(org.moe.natj.objc.SEL sel)

      • resolveInstanceMethod

        public static boolean resolveInstanceMethod​(org.moe.natj.objc.SEL sel)

      • scaleFactorX

        public double scaleFactorX()
        [@property] scaleFactorX The downsampling scale factor for the x dimension. The default value is 1.

      • scaleFactorY

        public double scaleFactorY()
        [@property] scaleFactorY The downsampling scale factor for the y dimension. The default value is 1.

      • setVersion_static

        public static void setVersion_static​(long aVersion)

      • superclass_static

        public static org.moe.natj.objc.Class superclass_static()

      • supportsSecureCoding

        public static boolean supportsSecureCoding()

      • _supportsSecureCoding

        public boolean _supportsSecureCoding()
        Description copied from interface: NSSecureCoding
        This property must return YES on all classes that allow secure coding. Subclasses of classes that adopt NSSecureCoding and override initWithCoder: must also override this method and return YES. The Secure Coding Guide should be consulted when writing methods that decode data.
        Specified by:
        _supportsSecureCoding in interface NSSecureCoding
        Overrides:
        _supportsSecureCoding in class MPSCNNGradientKernel

      • version_static

        public static long version_static()