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Declare a semaphore

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This commit is contained in:
Eryn Wells 2018-10-13 20:52:21 -07:00
parent 491274605c
commit a3ae11bfaf
1 changed files with 4 additions and 0 deletions
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4
MetaballsKit/Renderer.swift
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@ -66,6 +66,8 @@ public class Renderer: NSObject, MTKViewDelegate {
] ]
private var parametersBuffer: MTLBuffer? private var parametersBuffer: MTLBuffer?
private var inFlightSemaphore: DispatchSemaphore
override public init() { override public init() {
guard let device = MTLCreateSystemDefaultDevice() else { guard let device = MTLCreateSystemDefaultDevice() else {
fatalError("Unable to create Metal system device") fatalError("Unable to create Metal system device")
@ -80,6 +82,8 @@ public class Renderer: NSObject, MTKViewDelegate {
let parametersLength = MemoryLayout<RenderParameters>.size let parametersLength = MemoryLayout<RenderParameters>.size
parametersBuffer = device.makeBuffer(length: parametersLength, options: .storageModeShared) parametersBuffer = device.makeBuffer(length: parametersLength, options: .storageModeShared)
inFlightSemaphore = DispatchSemaphore(value: 1)
super.init() super.init()
} }