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Hi to everyone.
I'm starting to try your iOS sdk and i have a problem to create a simple test project. I'm reading your tutorial (probably written for swift 2) and i'm able to compile and install my test project, but, after i agree privacy alert for camera use, i see only a blank black image. Log shows "startCameraSampligWithCompletionHandler called with session...". I'm using Xcode 8.2.1 (last version) and swift 3. Thanks in advance.

I get exactly this problem with your latest SDK and following the "Getting Started" guide.
With this the last log I get is:
startCameraSamplingWithCompletionHandler called with session 0x1c0008690
With your sample Xcode project I get:
startCameraSamplingWithCompletionHandler called with session 0x1c0007170
CameraRenderer::UpdateRendering 00 w 640.000000 h 480.000000 w1 640.000000 h1 480.000000CameraRenderer::UpdateRendering 01 1.000000 0.000000 0.000000 0.000000CameraRenderer::UpdateRendering 02 0.000000 1.000000 0.000000 0.000000CameraRenderer::UpdateRendering 03 0.000000 0.000000 -0.020202 -1.002002CameraRenderer::UpdateRendering 04 0.000000 0.000000 0.000000 1.000000

So basically the CameraRenderer isn't starting for whatever reason.
Can I send you my Xcode project?

Okay - I "solved" it.
It seems like I need to add the following methods to my ViewController:

internal func updateViewPortWithOrientation() {

        let orientation:UIInterfaceOrientation = UIApplication.shared.statusBarOrientation

        let mainScreen:UIScreen=UIScreen.main

        let boundScreen:CGRect=mainScreen.bounds

        let scale:CGFloat=mainScreen.scale

        var widthPort:CGFloat=boundScreen.size.width*scale;

        var heightPort:CGFloat=boundScreen.size.height*scale;

        

        if (scale == 3) // iPhone 6 plus non è un vero @3x, ma c'e' un downsampling

            // http://www.paintcodeapp.com/news/iphone-6-screens-demystified

        {

            widthPort=widthPort/1.15;

            heightPort=heightPort/1.15;

        }

        

        var angle:Int=90;

        

        switch (orientation) {

        case .portrait:

            angle=90

        case .landscapeRight:

            angle=0

        case .landscapeLeft:

            angle=180

        case .portraitUpsideDown:

            angle=270

        default:

            break

        }

        self.UpdateViewPortWithSize(CGSize(width: widthPort,height: heightPort), angle: angle)

    }

    

    internal func UpdateViewPortWithSize(_ size:CGSize, angle:Int) {

        _ViewportWidth = size.width;

        _ViewportHeight = size.height;

        _Angle = angle;

    }

    

    override func glkView(_ view: GLKView, drawIn rect: CGRect) {

        

        if (!self.isActive()) {

            return

        }

        

        glClear(GLbitfield(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT));

        

        self.renderCamera(withViewPortSize: CGSize(width: _ViewportWidth, height: _ViewportHeight), andAngle: Int32(_Angle))

        

        glFinish();

    }