iOS: Initial working commit supporting iOS (ipad pro 11)

using our OpenJFK 9 x86_64 and arm64 build.

Test demo class is 'com.jogamp.opengl.demos.ios.Hello',
residing in the new demo folder 'src/demos/com/jogamp/opengl/demos/ios/Hello.java'.

This commit does not yet include a working NEWT
specialization for iOS, but it shall followup soon.

Instead this commit demonstrates JOGL operating on
native UIWindow, UIView and CAEAGLLayer as provided by
Nativewindow's IOSUtil.

Test Video https://www.youtube.com/watch?v=Z4lUQNFTGMI

+++

Notable bug: The FBO used and sharing the COLORBUFFER RENDERBUFFER
memory resources with CAEAGLLayer to be displayed in the UIView
seemingly cannot handle GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT24
or GL_DEPTH_COMPONENT32 depth buffer - none at all (Device + Simulation).

Therefor the default demo GLEventListener chosen here
don't require a depth buffer ;-)

This issue can hopefully be mitigated with other means
than using a flat FBO sink similar to FBO multisampling.

3 files changed, 65 insertions, 0 deletions

diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/NativeWindowFactory.java b/src/nativewindow/classes/com/jogamp/nativewindow/NativeWindowFactory.java
index 323bc8c86..8e00d318c 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/NativeWindowFactory.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/NativeWindowFactory.java
@@ -52,6 +52,7 @@ import jogamp.nativewindow.NativeWindowFactoryImpl;
 import jogamp.nativewindow.ToolkitProperties;
 import jogamp.nativewindow.ResourceToolkitLock;
 import jogamp.nativewindow.WrappedWindow;
+import jogamp.nativewindow.ios.IOSUtil;
 import jogamp.nativewindow.macosx.OSXUtil;
 import jogamp.nativewindow.windows.GDIUtil;
 import jogamp.nativewindow.x11.X11Lib;
@@ -65,6 +66,7 @@ import com.jogamp.nativewindow.UpstreamWindowHookMutableSizePos;
 import com.jogamp.nativewindow.awt.AWTGraphicsDevice;
 import com.jogamp.nativewindow.awt.AWTGraphicsScreen;
 import com.jogamp.nativewindow.egl.EGLGraphicsDevice;
+import com.jogamp.nativewindow.ios.IOSGraphicsDevice;
 import com.jogamp.nativewindow.macosx.MacOSXGraphicsDevice;
 import com.jogamp.nativewindow.windows.WindowsGraphicsDevice;
 import com.jogamp.nativewindow.x11.X11GraphicsDevice;
@@ -100,6 +102,9 @@ public abstract class NativeWindowFactory {
     /** Mac OS X type, as retrieved with {@link #getNativeWindowType(boolean)}. String is canonical via {@link String#intern()}. */
     public static final String TYPE_MACOSX = ".macosx";
 
+    /** iOS type, as retrieved with {@link #getNativeWindowType(boolean)}. String is canonical via {@link String#intern()}. */
+    public static final String TYPE_IOS = ".iOS";
+
     /** Generic AWT type, as retrieved with {@link #getNativeWindowType(boolean)}. String is canonical via {@link String#intern()}. */
     public static final String TYPE_AWT = ".awt";
 
@@ -120,6 +125,8 @@ public abstract class NativeWindowFactory {
     private static final String X11UtilClassName = "jogamp.nativewindow.x11.X11Util";
     /** {@link jogamp.nativewindow.macosx.OSXUtil} implements {@link ToolkitProperties}. */
     private static final String OSXUtilClassName = "jogamp.nativewindow.macosx.OSXUtil";
+    /** {@link jogamp.nativewindow.ios.IOSUtil} implements {@link ToolkitProperties}. */
+    private static final String IOSUtilClassName = "jogamp.nativewindow.ios.IOSUtil";
     /** {@link jogamp.nativewindow.windows.GDIUtil} implements {@link ToolkitProperties}. */
     private static final String GDIClassName = "jogamp.nativewindow.windows.GDIUtil";
 
@@ -143,6 +150,8 @@ public abstract class NativeWindowFactory {
               return TYPE_ANDROID;
             case MACOS:
               return TYPE_MACOSX;
+            case IOS:
+              return TYPE_IOS;
             case WINDOWS:
               return TYPE_WINDOWS;
             case OPENKODE:
@@ -204,6 +213,8 @@ public abstract class NativeWindowFactory {
             clazzName = GDIClassName;
         } else if( TYPE_MACOSX == nativeWindowingTypePure ) {
             clazzName = OSXUtilClassName;
+        } else if( TYPE_IOS == nativeWindowingTypePure ) {
+            clazzName = IOSUtilClassName;
         } else {
             clazzName = null;
         }
@@ -294,6 +305,8 @@ public abstract class NativeWindowFactory {
             clazzName = GDIClassName;
         } else if( TYPE_MACOSX == nativeWindowingTypePure ) {
             clazzName = OSXUtilClassName;
+        } else if( TYPE_IOS == nativeWindowingTypePure ) {
+            clazzName = IOSUtilClassName;
         } else {
             clazzName = null;
         }
@@ -677,6 +690,8 @@ public abstract class NativeWindowFactory {
             return new WindowsGraphicsDevice(AbstractGraphicsDevice.DEFAULT_UNIT);
         } else if( NativeWindowFactory.TYPE_MACOSX == nwt ) {
             return new MacOSXGraphicsDevice(AbstractGraphicsDevice.DEFAULT_UNIT);
+        } else if( NativeWindowFactory.TYPE_IOS == nwt ) {
+            return new IOSGraphicsDevice(AbstractGraphicsDevice.DEFAULT_UNIT);
         } else if( NativeWindowFactory.TYPE_EGL == nwt ) {
             final EGLGraphicsDevice device;
             if( own ) {
@@ -742,6 +757,8 @@ public abstract class NativeWindowFactory {
             return GDIUtil.GetRelativeLocation(nw.getWindowHandle(), 0, 0, 0);
         } else if( NativeWindowFactory.TYPE_MACOSX == nwt ) {
             return OSXUtil.GetLocationOnScreen(nw.getWindowHandle(), 0, 0);
+        } else if( NativeWindowFactory.TYPE_IOS == nwt ) {
+            return IOSUtil.GetLocationOnScreen(nw.getWindowHandle(), 0, 0);
         /**
          * FIXME: Needs service provider interface (SPI) for TK dependent implementation
         } else if( NativeWindowFactory.TYPE_BCM_VC_IV == nwt ) {
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/ios/IOSGraphicsDevice.java b/src/nativewindow/classes/com/jogamp/nativewindow/ios/IOSGraphicsDevice.java
new file mode 100644
index 000000000..0a4354c9d
--- /dev/null
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/ios/IOSGraphicsDevice.java
@@ -0,0 +1,46 @@
+/**
+ * Copyright 2019 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package com.jogamp.nativewindow.ios;
+
+import com.jogamp.nativewindow.*;
+
+/** Encapsulates a graphics device on IOS platforms.
+ */
+public class IOSGraphicsDevice extends DefaultGraphicsDevice implements Cloneable {
+    /** Constructs a new IOSGraphicsDevice */
+    public IOSGraphicsDevice(final int unitID) {
+        super(NativeWindowFactory.TYPE_IOS, AbstractGraphicsDevice.DEFAULT_CONNECTION, unitID);
+    }
+
+    @Override
+    public Object clone() {
+      return super.clone();
+    }
+}
+
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/javafx/JFXAccessor.java b/src/nativewindow/classes/com/jogamp/nativewindow/javafx/JFXAccessor.java
index bffabdd5a..9d38b1f4b 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/javafx/JFXAccessor.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/javafx/JFXAccessor.java
@@ -62,6 +62,7 @@ public class JFXAccessor {
 
     private static final String nwt;
     private static final boolean isOSX;
+    private static final boolean isIOS;
     private static final boolean isWindows;
     private static final boolean isX11;
 
@@ -130,6 +131,7 @@ public class JFXAccessor {
 
         nwt = NativeWindowFactory.getNativeWindowType(false);
         isOSX = NativeWindowFactory.TYPE_MACOSX == nwt;
+        isIOS = NativeWindowFactory.TYPE_IOS == nwt;
         isWindows = NativeWindowFactory.TYPE_WINDOWS == nwt;
         isX11 = NativeWindowFactory.TYPE_X11 == nwt;