class MPSBinaryImageKernel : MPSKernel {
    var primaryOffset: MPSOffset
    var secondaryOffset: MPSOffset
    var primaryEdgeMode: MPSImageEdgeMode
    var secondaryEdgeMode: MPSImageEdgeMode
    var clipRect: MTLRegion
    func encodeToCommandBuffer(_ commandBuffer: MTLCommandBuffer, primaryTexture primaryTexture: MTLTexture, inPlaceSecondaryTexture inPlaceSecondaryTexture: UnsafeMutablePointer<MTLTexture?>, fallbackCopyAllocator copyAllocator: MPSCopyAllocator?) -> Bool
    func encodeToCommandBuffer(_ commandBuffer: MTLCommandBuffer, inPlacePrimaryTexture inPlacePrimaryTexture: UnsafeMutablePointer<MTLTexture?>, secondaryTexture secondaryTexture: MTLTexture, fallbackCopyAllocator copyAllocator: MPSCopyAllocator?) -> Bool
    func encodeToCommandBuffer(_ commandBuffer: MTLCommandBuffer, primaryTexture primaryTexture: MTLTexture, secondaryTexture secondaryTexture: MTLTexture, destinationTexture destinationTexture: MTLTexture)
    func primarySourceRegionForDestinationSize(_ destinationSize: MTLSize) -> MPSRegion
    func secondarySourceRegionForDestinationSize(_ destinationSize: MTLSize) -> MPSRegion
}

class MPSBinaryImageKernel : MPSKernel {
    var primaryOffset: MPSOffset
    var secondaryOffset: MPSOffset
    var primaryEdgeMode: MPSImageEdgeMode
    var secondaryEdgeMode: MPSImageEdgeMode
    var clipRect: MTLRegion
    func encode(to commandBuffer: MTLCommandBuffer, primaryTexture primaryTexture: MTLTexture, inPlaceSecondaryTexture inPlaceSecondaryTexture: UnsafeMutablePointer<MTLTexture>, fallbackCopyAllocator copyAllocator: MetalPerformanceShaders.MPSCopyAllocator? = nil) -> Bool
    func encode(to commandBuffer: MTLCommandBuffer, inPlacePrimaryTexture inPlacePrimaryTexture: UnsafeMutablePointer<MTLTexture>, secondaryTexture secondaryTexture: MTLTexture, fallbackCopyAllocator copyAllocator: MetalPerformanceShaders.MPSCopyAllocator? = nil) -> Bool
    func encode(to commandBuffer: MTLCommandBuffer, primaryTexture primaryTexture: MTLTexture, secondaryTexture secondaryTexture: MTLTexture, destinationTexture destinationTexture: MTLTexture)
    func primarySourceRegion(forDestinationSize destinationSize: MTLSize) -> MPSRegion
    func secondarySourceRegion(forDestinationSize destinationSize: MTLSize) -> MPSRegion
}

func encodeToCommandBuffer(_ commandBuffer: MTLCommandBuffer, inPlacePrimaryTexture inPlacePrimaryTexture: UnsafeMutablePointer<MTLTexture?>, secondaryTexture secondaryTexture: MTLTexture, fallbackCopyAllocator copyAllocator: MPSCopyAllocator?) -> Bool

func encode(to commandBuffer: MTLCommandBuffer, inPlacePrimaryTexture inPlacePrimaryTexture: UnsafeMutablePointer<MTLTexture>, secondaryTexture secondaryTexture: MTLTexture, fallbackCopyAllocator copyAllocator: MetalPerformanceShaders.MPSCopyAllocator? = nil) -> Bool

func encodeToCommandBuffer(_ commandBuffer: MTLCommandBuffer, primaryTexture primaryTexture: MTLTexture, inPlaceSecondaryTexture inPlaceSecondaryTexture: UnsafeMutablePointer<MTLTexture?>, fallbackCopyAllocator copyAllocator: MPSCopyAllocator?) -> Bool

func encode(to commandBuffer: MTLCommandBuffer, primaryTexture primaryTexture: MTLTexture, inPlaceSecondaryTexture inPlaceSecondaryTexture: UnsafeMutablePointer<MTLTexture>, fallbackCopyAllocator copyAllocator: MetalPerformanceShaders.MPSCopyAllocator? = nil) -> Bool

func encodeToCommandBuffer(_ commandBuffer: MTLCommandBuffer, primaryTexture primaryTexture: MTLTexture, secondaryTexture secondaryTexture: MTLTexture, destinationTexture destinationTexture: MTLTexture)

func encode(to commandBuffer: MTLCommandBuffer, primaryTexture primaryTexture: MTLTexture, secondaryTexture secondaryTexture: MTLTexture, destinationTexture destinationTexture: MTLTexture)

func primarySourceRegionForDestinationSize(_ destinationSize: MTLSize) -> MPSRegion

func primarySourceRegion(forDestinationSize destinationSize: MTLSize) -> MPSRegion

func secondarySourceRegionForDestinationSize(_ destinationSize: MTLSize) -> MPSRegion

func secondarySourceRegion(forDestinationSize destinationSize: MTLSize) -> MPSRegion

enum MPSImageEdgeMode : UInt {
    case Zero
    case Clamp
}

enum MPSImageEdgeMode : UInt {
    case zero
    case clamp
}

case Clamp

case clamp

case Zero

case zero

class MPSImageHistogram : MPSKernel {
    var clipRectSource: MTLRegion
    var zeroHistogram: Bool
    var histogramInfo: MPSImageHistogramInfo { get }
    init(device device: MTLDevice, histogramInfo histogramInfo: UnsafePointer<MPSImageHistogramInfo>)
    func encodeToCommandBuffer(_ commandBuffer: MTLCommandBuffer, sourceTexture source: MTLTexture, histogram histogram: MTLBuffer, histogramOffset histogramOffset: Int)
    func histogramSizeForSourceFormat(_ sourceFormat: MTLPixelFormat) -> Int
}

class MPSImageHistogram : MPSKernel {
    var clipRectSource: MTLRegion
    var zeroHistogram: Bool
    var histogramInfo: MPSImageHistogramInfo { get }
    init(device device: MTLDevice, histogramInfo histogramInfo: UnsafePointer<MPSImageHistogramInfo>)
    func encode(to commandBuffer: MTLCommandBuffer, sourceTexture source: MTLTexture, histogram histogram: MTLBuffer, histogramOffset histogramOffset: Int)
    func histogramSize(forSourceFormat sourceFormat: MTLPixelFormat) -> Int
}

func encodeToCommandBuffer(_ commandBuffer: MTLCommandBuffer, sourceTexture source: MTLTexture, histogram histogram: MTLBuffer, histogramOffset histogramOffset: Int)

func encode(to commandBuffer: MTLCommandBuffer, sourceTexture source: MTLTexture, histogram histogram: MTLBuffer, histogramOffset histogramOffset: Int)

func histogramSizeForSourceFormat(_ sourceFormat: MTLPixelFormat) -> Int

func histogramSize(forSourceFormat sourceFormat: MTLPixelFormat) -> Int

class MPSImageHistogramEqualization : MPSUnaryImageKernel {
    var histogramInfo: MPSImageHistogramInfo { get }
    init(device device: MTLDevice, histogramInfo histogramInfo: UnsafePointer<MPSImageHistogramInfo>)
    func encodeTransformToCommandBuffer(_ commandBuffer: MTLCommandBuffer, sourceTexture source: MTLTexture, histogram histogram: MTLBuffer, histogramOffset histogramOffset: Int)
}

class MPSImageHistogramEqualization : MPSUnaryImageKernel {
    var histogramInfo: MPSImageHistogramInfo { get }
    init(device device: MTLDevice, histogramInfo histogramInfo: UnsafePointer<MPSImageHistogramInfo>)
    func encodeTransform(to commandBuffer: MTLCommandBuffer, sourceTexture source: MTLTexture, histogram histogram: MTLBuffer, histogramOffset histogramOffset: Int)
}

func encodeTransformToCommandBuffer(_ commandBuffer: MTLCommandBuffer, sourceTexture source: MTLTexture, histogram histogram: MTLBuffer, histogramOffset histogramOffset: Int)

func encodeTransform(to commandBuffer: MTLCommandBuffer, sourceTexture source: MTLTexture, histogram histogram: MTLBuffer, histogramOffset histogramOffset: Int)

class MPSImageHistogramSpecification : MPSUnaryImageKernel {
    var histogramInfo: MPSImageHistogramInfo { get }
    init(device device: MTLDevice, histogramInfo histogramInfo: UnsafePointer<MPSImageHistogramInfo>)
    func encodeTransformToCommandBuffer(_ commandBuffer: MTLCommandBuffer, sourceTexture source: MTLTexture, sourceHistogram sourceHistogram: MTLBuffer, sourceHistogramOffset sourceHistogramOffset: Int, desiredHistogram desiredHistogram: MTLBuffer, desiredHistogramOffset desiredHistogramOffset: Int)
}

class MPSImageHistogramSpecification : MPSUnaryImageKernel {
    var histogramInfo: MPSImageHistogramInfo { get }
    init(device device: MTLDevice, histogramInfo histogramInfo: UnsafePointer<MPSImageHistogramInfo>)
    func encodeTransform(to commandBuffer: MTLCommandBuffer, sourceTexture source: MTLTexture, sourceHistogram sourceHistogram: MTLBuffer, sourceHistogramOffset sourceHistogramOffset: Int, desiredHistogram desiredHistogram: MTLBuffer, desiredHistogramOffset desiredHistogramOffset: Int)
}

func encodeTransformToCommandBuffer(_ commandBuffer: MTLCommandBuffer, sourceTexture source: MTLTexture, sourceHistogram sourceHistogram: MTLBuffer, sourceHistogramOffset sourceHistogramOffset: Int, desiredHistogram desiredHistogram: MTLBuffer, desiredHistogramOffset desiredHistogramOffset: Int)

func encodeTransform(to commandBuffer: MTLCommandBuffer, sourceTexture source: MTLTexture, sourceHistogram sourceHistogram: MTLBuffer, sourceHistogramOffset sourceHistogramOffset: Int, desiredHistogram desiredHistogram: MTLBuffer, desiredHistogramOffset desiredHistogramOffset: Int)

class MPSImageLanczosScale : MPSUnaryImageKernel {
    var scaleTransform: UnsafePointer<MPSScaleTransform>
}

class MPSImageLanczosScale : MPSUnaryImageKernel {
    var scaleTransform: UnsafePointer<MPSScaleTransform>?
}

var scaleTransform: UnsafePointer<MPSScaleTransform>

var scaleTransform: UnsafePointer<MPSScaleTransform>?

class MPSImageThresholdBinary : MPSUnaryImageKernel {
    init(device device: MTLDevice, thresholdValue thresholdValue: Float, maximumValue maximumValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>)
    convenience init(device device: MTLDevice)
    var thresholdValue: Float { get }
    var maximumValue: Float { get }
    var transform: UnsafePointer<Float> { get }
}

class MPSImageThresholdBinary : MPSUnaryImageKernel {
    init(device device: MTLDevice, thresholdValue thresholdValue: Float, maximumValue maximumValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>?)
    convenience init(device device: MTLDevice)
    var thresholdValue: Float { get }
    var maximumValue: Float { get }
    var transform: UnsafePointer<Float> { get }
}

init(device device: MTLDevice, thresholdValue thresholdValue: Float, maximumValue maximumValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>)

init(device device: MTLDevice, thresholdValue thresholdValue: Float, maximumValue maximumValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>?)

class MPSImageThresholdBinaryInverse : MPSUnaryImageKernel {
    init(device device: MTLDevice, thresholdValue thresholdValue: Float, maximumValue maximumValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>)
    convenience init(device device: MTLDevice)
    var thresholdValue: Float { get }
    var maximumValue: Float { get }
    var transform: UnsafePointer<Float> { get }
}

class MPSImageThresholdBinaryInverse : MPSUnaryImageKernel {
    init(device device: MTLDevice, thresholdValue thresholdValue: Float, maximumValue maximumValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>?)
    convenience init(device device: MTLDevice)
    var thresholdValue: Float { get }
    var maximumValue: Float { get }
    var transform: UnsafePointer<Float> { get }
}

init(device device: MTLDevice, thresholdValue thresholdValue: Float, maximumValue maximumValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>)

init(device device: MTLDevice, thresholdValue thresholdValue: Float, maximumValue maximumValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>?)

class MPSImageThresholdToZero : MPSUnaryImageKernel {
    init(device device: MTLDevice, thresholdValue thresholdValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>)
    convenience init(device device: MTLDevice)
    var thresholdValue: Float { get }
    var transform: UnsafePointer<Float> { get }
}

class MPSImageThresholdToZero : MPSUnaryImageKernel {
    init(device device: MTLDevice, thresholdValue thresholdValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>?)
    convenience init(device device: MTLDevice)
    var thresholdValue: Float { get }
    var transform: UnsafePointer<Float> { get }
}

init(device device: MTLDevice, thresholdValue thresholdValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>)

init(device device: MTLDevice, thresholdValue thresholdValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>?)

class MPSImageThresholdToZeroInverse : MPSUnaryImageKernel {
    init(device device: MTLDevice, thresholdValue thresholdValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>)
    convenience init(device device: MTLDevice)
    var thresholdValue: Float { get }
    var transform: UnsafePointer<Float> { get }
}

class MPSImageThresholdToZeroInverse : MPSUnaryImageKernel {
    init(device device: MTLDevice, thresholdValue thresholdValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>?)
    convenience init(device device: MTLDevice)
    var thresholdValue: Float { get }
    var transform: UnsafePointer<Float> { get }
}

init(device device: MTLDevice, thresholdValue thresholdValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>)

init(device device: MTLDevice, thresholdValue thresholdValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>?)

class MPSImageThresholdTruncate : MPSUnaryImageKernel {
    init(device device: MTLDevice, thresholdValue thresholdValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>)
    convenience init(device device: MTLDevice)
    var thresholdValue: Float { get }
    var transform: UnsafePointer<Float> { get }
}

class MPSImageThresholdTruncate : MPSUnaryImageKernel {
    init(device device: MTLDevice, thresholdValue thresholdValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>?)
    convenience init(device device: MTLDevice)
    var thresholdValue: Float { get }
    var transform: UnsafePointer<Float> { get }
}

init(device device: MTLDevice, thresholdValue thresholdValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>)

init(device device: MTLDevice, thresholdValue thresholdValue: Float, linearGrayColorTransform transform: UnsafePointer<Float>?)

class MPSKernel : NSObject, NSCopying {
    var options: MPSKernelOptions
    var device: MTLDevice { get }
    var label: String?
    init(device device: MTLDevice)
    func copyWithZone(_ zone: NSZone, device device: MTLDevice?) -> Self
}

class MPSKernel : NSObject, NSCopying {
    var options: MPSKernelOptions
    var device: MTLDevice { get }
    var label: String?
    init(device device: MTLDevice)
    func copy(with zone: NSZone? = nil, device device: MTLDevice?) -> Self
    func performSelector(onMainThread aSelector: Selector, with arg: Any?, waitUntilDone wait: Bool, modes array: [String]?)
    func performSelector(onMainThread aSelector: Selector, with arg: Any?, waitUntilDone wait: Bool)
    func perform(_ aSelector: Selector, on thr: Thread, with arg: Any?, waitUntilDone wait: Bool, modes array: [String]?)
    func perform(_ aSelector: Selector, on thr: Thread, with arg: Any?, waitUntilDone wait: Bool)
    func performSelector(inBackground aSelector: Selector, with arg: Any?)
    class func classForKeyedUnarchiver() -> AnyClass
    var classForKeyedArchiver: AnyClass? { get }
    func replacementObject(for archiver: NSKeyedArchiver) -> Any?
    class func classFallbacksForKeyedArchiver() -> [String]
    class func keyPathsForValuesAffectingValue(forKey key: String) -> Set<String>
    class func automaticallyNotifiesObservers(forKey key: String) -> Bool
    var observationInfo: UnsafeMutableRawPointer?
    func willChangeValue(forKey key: String)
    func didChangeValue(forKey key: String)
    func willChange(_ changeKind: NSKeyValueChange, valuesAt indexes: IndexSet, forKey key: String)
    func didChange(_ changeKind: NSKeyValueChange, valuesAt indexes: IndexSet, forKey key: String)
    func willChangeValue(forKey key: String, withSetMutation mutationKind: NSKeyValueSetMutationKind, using objects: Set<AnyHashable>)
    func didChangeValue(forKey key: String, withSetMutation mutationKind: NSKeyValueSetMutationKind, using objects: Set<AnyHashable>)
    func addObserver(_ observer: NSObject, forKeyPath keyPath: String, options options: NSKeyValueObservingOptions = [], context context: UnsafeMutableRawPointer?)
    func removeObserver(_ observer: NSObject, forKeyPath keyPath: String, context context: UnsafeMutableRawPointer?)
    func removeObserver(_ observer: NSObject, forKeyPath keyPath: String)
    func observeValue(forKeyPath keyPath: String?, of object: Any?, change change: [NSKeyValueChangeKey : Any]?, context context: UnsafeMutableRawPointer?)
    class var accessInstanceVariablesDirectly: Bool { get }
    func value(forKey key: String) -> Any?
    func setValue(_ value: Any?, forKey key: String)
    func validateValue(_ ioValue: AutoreleasingUnsafeMutablePointer<AnyObject?>, forKey inKey: String) throws
    func mutableArrayValue(forKey key: String) -> NSMutableArray
    func mutableOrderedSetValue(forKey key: String) -> NSMutableOrderedSet
    func mutableSetValue(forKey key: String) -> NSMutableSet
    func value(forKeyPath keyPath: String) -> Any?
    func setValue(_ value: Any?, forKeyPath keyPath: String)
    func validateValue(_ ioValue: AutoreleasingUnsafeMutablePointer<AnyObject?>, forKeyPath inKeyPath: String) throws
    func mutableArrayValue(forKeyPath keyPath: String) -> NSMutableArray
    func mutableOrderedSetValue(forKeyPath keyPath: String) -> NSMutableOrderedSet
    func mutableSetValue(forKeyPath keyPath: String) -> NSMutableSet
    func value(forUndefinedKey key: String) -> Any?
    func setValue(_ value: Any?, forUndefinedKey key: String)
    func setNilValueForKey(_ key: String)
    func dictionaryWithValues(forKeys keys: [String]) -> [String : Any]
    func setValuesForKeys(_ keyedValues: [String : Any])
    func fileManager(_ fm: FileManager, shouldProceedAfterError errorInfo: [AnyHashable : Any]) -> Bool
    func fileManager(_ fm: FileManager, willProcessPath path: String)
    func perform(_ aSelector: Selector, with anArgument: Any?, afterDelay delay: TimeInterval, inModes modes: [RunLoopMode])
    func perform(_ aSelector: Selector, with anArgument: Any?, afterDelay delay: TimeInterval)
    class func cancelPreviousPerformRequests(withTarget aTarget: Any, selector aSelector: Selector, object anArgument: Any?)
    class func cancelPreviousPerformRequests(withTarget aTarget: Any)
    func attemptRecovery(fromError error: Error, optionIndex recoveryOptionIndex: Int, delegate delegate: Any?, didRecoverSelector didRecoverSelector: Selector?, contextInfo contextInfo: UnsafeMutableRawPointer?)
    func attemptRecovery(fromError error: Error, optionIndex recoveryOptionIndex: Int) -> Bool
    var autoContentAccessingProxy: Any { get }
    class func version() -> Int
    class func setVersion(_ aVersion: Int)
    var classForCoder: AnyClass { get }
    func awakeAfter(using aDecoder: NSCoder) -> Any?
}
extension MPSKernel : CVarArg {
}
extension MPSKernel : Equatable, Hashable {
    var hashValue: Int { get }
}

func copyWithZone(_ zone: NSZone, device device: MTLDevice?) -> Self

func copy(with zone: NSZone? = nil, device device: MTLDevice?) -> Self

struct MPSKernelOptions : OptionSetType {
    init(rawValue rawValue: UInt)
    static var None: MPSKernelOptions { get }
    static var SkipAPIValidation: MPSKernelOptions { get }
    static var AllowReducedPrecision: MPSKernelOptions { get }
}

struct MPSKernelOptions : OptionSet {
    init(rawValue rawValue: UInt)
    static var none: MPSKernelOptions { get }
    static var skipAPIValidation: MPSKernelOptions { get }
    static var allowReducedPrecision: MPSKernelOptions { get }
    static var disableInternalTiling: MPSKernelOptions { get }
    static var insertDebugGroups: MPSKernelOptions { get }
    func intersect(_ other: MPSKernelOptions) -> MPSKernelOptions
    func exclusiveOr(_ other: MPSKernelOptions) -> MPSKernelOptions
    mutating func unionInPlace(_ other: MPSKernelOptions)
    mutating func intersectInPlace(_ other: MPSKernelOptions)
    mutating func exclusiveOrInPlace(_ other: MPSKernelOptions)
    func isSubsetOf(_ other: MPSKernelOptions) -> Bool
    func isDisjointWith(_ other: MPSKernelOptions) -> Bool
    func isSupersetOf(_ other: MPSKernelOptions) -> Bool
    mutating func subtractInPlace(_ other: MPSKernelOptions)
    func isStrictSupersetOf(_ other: MPSKernelOptions) -> Bool
    func isStrictSubsetOf(_ other: MPSKernelOptions) -> Bool
}
extension MPSKernelOptions {
    func union(_ other: MPSKernelOptions) -> MPSKernelOptions
    func intersection(_ other: MPSKernelOptions) -> MPSKernelOptions
    func symmetricDifference(_ other: MPSKernelOptions) -> MPSKernelOptions
}
extension MPSKernelOptions {
    func contains(_ member: MPSKernelOptions) -> Bool
    mutating func insert(_ newMember: MPSKernelOptions) -> (inserted: Bool, memberAfterInsert: MPSKernelOptions)
    mutating func remove(_ member: MPSKernelOptions) -> MPSKernelOptions?
    mutating func update(with newMember: MPSKernelOptions) -> MPSKernelOptions?
}
extension MPSKernelOptions {
    convenience init()
    mutating func formUnion(_ other: MPSKernelOptions)
    mutating func formIntersection(_ other: MPSKernelOptions)
    mutating func formSymmetricDifference(_ other: MPSKernelOptions)
}
extension MPSKernelOptions {
    convenience init<S : Sequence where S.Iterator.Element == MPSKernelOptions>(_ sequence: S)
    convenience init(arrayLiteral arrayLiteral: MPSKernelOptions...)
    mutating func subtract(_ other: MPSKernelOptions)
    func isSubset(of other: MPSKernelOptions) -> Bool
    func isSuperset(of other: MPSKernelOptions) -> Bool
    func isDisjoint(with other: MPSKernelOptions) -> Bool
    func subtracting(_ other: MPSKernelOptions) -> MPSKernelOptions
    var isEmpty: Bool { get }
    func isStrictSuperset(of other: MPSKernelOptions) -> Bool
    func isStrictSubset(of other: MPSKernelOptions) -> Bool
}

static var AllowReducedPrecision: MPSKernelOptions { get }

static var allowReducedPrecision: MPSKernelOptions { get }

static var SkipAPIValidation: MPSKernelOptions { get }

static var skipAPIValidation: MPSKernelOptions { get }

class MPSUnaryImageKernel : MPSKernel {
    var offset: MPSOffset
    var clipRect: MTLRegion
    var edgeMode: MPSImageEdgeMode
    func encodeToCommandBuffer(_ commandBuffer: MTLCommandBuffer, inPlaceTexture texture: UnsafeMutablePointer<MTLTexture?>, fallbackCopyAllocator copyAllocator: MPSCopyAllocator?) -> Bool
    func encodeToCommandBuffer(_ commandBuffer: MTLCommandBuffer, sourceTexture sourceTexture: MTLTexture, destinationTexture destinationTexture: MTLTexture)
    func sourceRegionForDestinationSize(_ destinationSize: MTLSize) -> MPSRegion
}

class MPSUnaryImageKernel : MPSKernel {
    var offset: MPSOffset
    var clipRect: MTLRegion
    var edgeMode: MPSImageEdgeMode
    func encode(commandBuffer commandBuffer: MTLCommandBuffer, inPlaceTexture texture: UnsafeMutablePointer<MTLTexture>, fallbackCopyAllocator copyAllocator: MetalPerformanceShaders.MPSCopyAllocator? = nil) -> Bool
    func encode(commandBuffer commandBuffer: MTLCommandBuffer, sourceTexture sourceTexture: MTLTexture, destinationTexture destinationTexture: MTLTexture)
    func sourceRegion(destinationSize destinationSize: MTLSize) -> MPSRegion
}

func encodeToCommandBuffer(_ commandBuffer: MTLCommandBuffer, inPlaceTexture texture: UnsafeMutablePointer<MTLTexture?>, fallbackCopyAllocator copyAllocator: MPSCopyAllocator?) -> Bool

func encode(commandBuffer commandBuffer: MTLCommandBuffer, inPlaceTexture texture: UnsafeMutablePointer<MTLTexture>, fallbackCopyAllocator copyAllocator: MetalPerformanceShaders.MPSCopyAllocator? = nil) -> Bool

func encodeToCommandBuffer(_ commandBuffer: MTLCommandBuffer, sourceTexture sourceTexture: MTLTexture, destinationTexture destinationTexture: MTLTexture)

func encode(commandBuffer commandBuffer: MTLCommandBuffer, sourceTexture sourceTexture: MTLTexture, destinationTexture destinationTexture: MTLTexture)

func sourceRegionForDestinationSize(_ destinationSize: MTLSize) -> MPSRegion

func sourceRegion(destinationSize destinationSize: MTLSize) -> MPSRegion