スマホでVR写真表示アプリを作る(Xamarin) - OpenGLView

OGLView.cs

using OpenTK;
using OpenTK.Graphics;
using OpenTK.Graphics.ES30;

using EquirectangularSample;

#if __ANDROID__
	using Android.Content;
	using Android.Graphics;
	using Android.Util;
	using Android.Views;
	using OpenTK.Platform.Android;
#endif

#if __IOS__
	using CoreGraphics;
	using Foundation;
	using ObjCRuntime;
	using OpenGLES;
	using OpenTK.Platform.iPhoneOS;
	using UIKit;
#endif