Stop recreating the CIContext for every frame.

Author: Omer Karisman

SceneKitVideoRecorder.podspec

@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
   #
 
   s.name         = "SceneKitVideoRecorder"
-  s.version      = "1.0.0"
+  s.version      = "1.0.1"
   s.summary      = "Record videos of SceneKit and ARKit"
 
   # This description is used to generate tags and improve search results.

SceneKitVideoRecorder/Classes/PixelBufferFactory.swift

@@ -12,6 +12,9 @@
 import UIKit
 
 struct PixelBufferFactory {
+
+  static let context = CIContext(options: nil)
+
   static func make(with metalLayer: CAMetalLayer, usingBuffer pool: CVPixelBufferPool) -> (CVPixelBuffer?, UIImage) {
 
     let currentDrawable = metalLayer.nextDrawable()
@@ -38,7 +41,6 @@ struct PixelBufferFactory {
   static func imageFromCVPixelBuffer(buffer: CVPixelBuffer) -> UIImage {
 
     let ciimage = CIImage(cvPixelBuffer: buffer)
-    let context = CIContext(options: nil)
     let cgimgage = context.createCGImage(ciimage, from: CGRect(x: 0, y: 0, width: CVPixelBufferGetWidth(buffer), height: CVPixelBufferGetHeight(buffer)))
 
     let uiimage = UIImage(cgImage: cgimgage!)