JOGL/AWT: Fix ~ 2 year old regressions: Choose & Use GraphicsConfiguration for Canvas. ; Adding FSAA test.

Canvas/X11:
  The Canvas GraphicsConfiguraton should be chosen before the native peer is being created.

Choosing AWT GraphicsConfiguration (all platforms):
  Don't filter our capabilities with 'AWTGraphicsConfiguration.setupCapabilitiesRGBABits(capsChosen, gc)',
  not necessary (see above) and it would remove ourrequired alpha channel.

Canvas display():
  Don't render if drawable is not realized (yet).

17 files changed, 615 insertions, 142 deletions

diff --git a/src/jogl/classes/com/jogamp/opengl/impl/macosx/cgl/awt/MacOSXAWTCGLGraphicsConfigurationFactory.java b/src/jogl/classes/com/jogamp/opengl/impl/macosx/cgl/awt/MacOSXAWTCGLGraphicsConfigurationFactory.java
index 690e0466b..702d66fce 100644
--- a/src/jogl/classes/com/jogamp/opengl/impl/macosx/cgl/awt/MacOSXAWTCGLGraphicsConfigurationFactory.java
+++ b/src/jogl/classes/com/jogamp/opengl/impl/macosx/cgl/awt/MacOSXAWTCGLGraphicsConfigurationFactory.java
@@ -100,11 +100,6 @@ public class MacOSXAWTCGLGraphicsConfigurationFactory extends GraphicsConfigurat
         }
 
         GraphicsConfiguration gc = device.getDefaultConfiguration();
-        capsChosen = (GLCapabilitiesImmutable) AWTGraphicsConfiguration.setupCapabilitiesRGBABits(capsChosen, gc);
-        if(DEBUG) {
-            System.err.println("AWT Colormodel compatible: "+capsChosen);
-        }
-
         MacOSXCGLGraphicsConfiguration macConfig = (MacOSXCGLGraphicsConfiguration)
             GraphicsConfigurationFactory.getFactory(macDevice).chooseGraphicsConfiguration(capsChosen,
                                                                                            capsRequested,
@@ -114,7 +109,8 @@ public class MacOSXAWTCGLGraphicsConfigurationFactory extends GraphicsConfigurat
             throw new GLException("Unable to choose a GraphicsConfiguration: "+capsChosen+",\n\t"+chooser+"\n\t"+macScreen);
         }
 
-        // FIXME: we have nothing to match .. so choose the default
-        return new AWTGraphicsConfiguration(awtScreen, macConfig.getChosenCapabilities(), macConfig.getRequestedCapabilities(), gc, macConfig);
+        // We have nothing to match .. so choose the default
+        return new AWTGraphicsConfiguration(awtScreen, macConfig.getChosenCapabilities(), macConfig.getRequestedCapabilities(),
+                                            gc, macConfig);
     }
 }
diff --git a/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsPbufferWGLDrawable.java b/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsPbufferWGLDrawable.java
index 751ae5380..842096e55 100644
--- a/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsPbufferWGLDrawable.java
+++ b/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsPbufferWGLDrawable.java
@@ -51,6 +51,7 @@ import javax.media.opengl.GLProfile;
 
 import com.jogamp.nativewindow.impl.windows.GDI;
 import com.jogamp.nativewindow.impl.windows.PIXELFORMATDESCRIPTOR;
+import com.jogamp.opengl.impl.GLContextImpl;
 import javax.media.opengl.GLCapabilitiesImmutable;
 
 public class WindowsPbufferWGLDrawable extends WindowsWGLDrawable {
@@ -62,14 +63,14 @@ public class WindowsPbufferWGLDrawable extends WindowsWGLDrawable {
 
   public WindowsPbufferWGLDrawable(GLDrawableFactory factory, NativeSurface target,
                                    WindowsWGLDrawable dummyDrawable,
-                                   WGLExt wglExt) {
+                                   WindowsWGLContext sharedCtx) {
     super(factory, target, true);
 
     if (DEBUG) {
         System.out.println("Pbuffer config: " + getNativeSurface().getGraphicsConfiguration().getNativeGraphicsConfiguration());
     }
 
-    createPbuffer(dummyDrawable.getNativeSurface().getSurfaceHandle(), wglExt);
+    createPbuffer(dummyDrawable.getNativeSurface().getSurfaceHandle(), sharedCtx);
 
     if (DEBUG) {
         System.err.println("Created pbuffer " + this);
@@ -126,12 +127,13 @@ public class WindowsPbufferWGLDrawable extends WindowsWGLDrawable {
     }
   }
 
-  private void createPbuffer(long parentHdc, WGLExt wglExt) {
+  private void createPbuffer(long parentHdc, WindowsWGLContext sharedCtx) {
     int[]   iattributes = new int  [2*WindowsWGLGraphicsConfiguration.MAX_ATTRIBS];
     float[] fattributes = new float[1];
     int[]   floatModeTmp = new int[1];
     int     niattribs   = 0;
     int     width, height;
+    WGLExt wglExt = sharedCtx.getWGLExt();
 
     WindowsWGLGraphicsConfiguration config = (WindowsWGLGraphicsConfiguration) getNativeSurface().getGraphicsConfiguration().getNativeGraphicsConfiguration();
     GLCapabilitiesImmutable capabilities = (GLCapabilitiesImmutable)config.getRequestedCapabilities();
@@ -144,7 +146,7 @@ public class WindowsPbufferWGLDrawable extends WindowsWGLDrawable {
 
     if(!WindowsWGLGraphicsConfiguration.GLCapabilities2AttribList(capabilities,
                                     iattributes,
-                                    wglExt,
+                                    sharedCtx,
                                     true,
                                     floatModeTmp)){
       throw new GLException("Pbuffer-related extensions not supported");
@@ -176,7 +178,7 @@ public class WindowsPbufferWGLDrawable extends WindowsWGLDrawable {
       throw new GLException("pbuffer creation error: Couldn't find a suitable pixel format");
     }
 
-    boolean haveMultisample = wglExt.isExtensionAvailable("WGL_ARB_multisample");
+    boolean haveMultisample = sharedCtx.isExtensionAvailable("WGL_ARB_multisample");
 
     if (DEBUG) {
       System.err.println("" + nformats + " suitable pixel formats found");
diff --git a/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsWGLDrawableFactory.java b/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsWGLDrawableFactory.java
index 51c5875cc..2e29e9c83 100644
--- a/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsWGLDrawableFactory.java
+++ b/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsWGLDrawableFactory.java
@@ -257,10 +257,9 @@ public class WindowsWGLDrawableFactory extends GLDrawableFactoryImpl {
           synchronized(sr.context) {
               sr.context.makeCurrent();
               try {
-                WGLExt wglExt = sr.context.getWGLExt();
                 GLDrawableImpl pbufferDrawable = new WindowsPbufferWGLDrawable(WindowsWGLDrawableFactory.this, target,
                                                                                sr.drawable,
-                                                                               wglExt);
+                                                                               sr.context);
                 returnList.add(pbufferDrawable);
               } finally {
                 sr.context.release();
diff --git a/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsWGLGraphicsConfiguration.java b/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsWGLGraphicsConfiguration.java
index f714c7719..c01072a6f 100644
--- a/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsWGLGraphicsConfiguration.java
+++ b/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsWGLGraphicsConfiguration.java
@@ -107,7 +107,7 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
     }
 
     /** Update config - after having a valid and current context */
-    protected void updateCapabilitiesByWGL(GLContextImpl context) {
+    protected void updateCapabilitiesByWGL(WindowsWGLContext context) {
         if(choosenByWGLPixelFormat) return; // already done ..
 
         GLCapabilitiesImmutable capabilities = (GLCapabilitiesImmutable) getRequestedCapabilities();
@@ -115,12 +115,11 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
         boolean usePBuffer = capabilities.isPBuffer();
         GLProfile glp = capabilities.getGLProfile();
 
-        WGLExt wglExt = (WGLExt) context.getPlatformGLExtensions();
         GLDrawable drawable = context.getGLDrawable();
         NativeSurface ns = drawable.getNativeSurface();
         long hdc = ns.getSurfaceHandle();
 
-        GLCapabilitiesImmutable[] caps = HDC2GLCapabilities(wglExt, hdc, getPixelFormatID(), glp, true, onscreen, usePBuffer);
+        GLCapabilitiesImmutable[] caps = HDC2GLCapabilities(context, hdc, getPixelFormatID(), glp, true, onscreen, usePBuffer);
         if(null!=caps && null!=caps[0]) {
             setCapsPFD(caps[0], getPixelFormat(), getPixelFormatID(), true);
         }
@@ -145,19 +144,17 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
     public int getPixelFormatID() { return pixelfmtID; }
     public boolean isChoosenByWGL() { return choosenByWGLPixelFormat; }
 
-    private static int haveWGLChoosePixelFormatARB = -1;
-    private static int haveWGLARBMultisample = -1;
-
-    public static GLCapabilitiesImmutable[] HDC2GLCapabilities(WGLExt wglExt, long hdc, int pfdIDOnly,
+    public static GLCapabilitiesImmutable[] HDC2GLCapabilities(WindowsWGLContext sharedCtx, long hdc, int pfdIDOnly,
                                                                GLProfile glp, boolean relaxed, boolean onscreen, boolean usePBuffer) {
     
-        if(haveWGLChoosePixelFormatARB<0) {
-            haveWGLChoosePixelFormatARB = wglExt.isExtensionAvailable("WGL_ARB_pixel_format")?1:0;
-        }
-        if(haveWGLARBMultisample<0) {
-            haveWGLARBMultisample = wglExt.isExtensionAvailable("WGL_ARB_multisample")?1:0;
+        boolean haveWGLChoosePixelFormatARB = sharedCtx.isExtensionAvailable("WGL_ARB_pixel_format");
+        boolean haveWGLARBMultisample = sharedCtx.isExtensionAvailable("WGL_ARB_multisample");
+        if(DEBUG) {
+            System.err.println("HDC2GLCapabilities: ARB_pixel_format: "+haveWGLChoosePixelFormatARB);
+            System.err.println("HDC2GLCapabilities: ARB_multisample : "+haveWGLARBMultisample);
         }
-        if (0==haveWGLChoosePixelFormatARB) {
+
+        if (!haveWGLChoosePixelFormatARB) {
             return null;
         }
 
@@ -176,6 +173,7 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
         int[] iattributes = new int  [2*MAX_ATTRIBS];
         int[] iresults    = new int  [2*MAX_ATTRIBS];
 
+        WGLExt wglExt = sharedCtx.getWGLExt();
         iattributes[0] = WGLExt.WGL_NUMBER_PIXEL_FORMATS_ARB;
         if (wglExt.wglGetPixelFormatAttribivARB(hdc, 0, 0, 1, iattributes, 0, iresults, 0)) {
           numFormats = iresults[0];
@@ -208,7 +206,7 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
           iattributes[niattribs++] = WGLExt.WGL_ACCUM_GREEN_BITS_ARB;
           iattributes[niattribs++] = WGLExt.WGL_ACCUM_BLUE_BITS_ARB;
           iattributes[niattribs++] = WGLExt.WGL_ACCUM_ALPHA_BITS_ARB;
-          if (1==haveWGLARBMultisample) {
+          if (haveWGLARBMultisample) {
             iattributes[niattribs++] = WGLExt.WGL_SAMPLE_BUFFERS_ARB;
             iattributes[niattribs++] = WGLExt.WGL_SAMPLES_ARB;
           }
@@ -242,10 +240,17 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
 
     public static boolean GLCapabilities2AttribList(GLCapabilitiesImmutable caps,
                                                     int[] iattributes,
-                                                    WGLExt wglExt,
+                                                    GLContextImpl sharedCtx,
                                                     boolean pbuffer,
                                                     int[] floatMode) throws GLException {
-        if (!wglExt.isExtensionAvailable("WGL_ARB_pixel_format")) {
+        boolean haveWGLChoosePixelFormatARB = sharedCtx.isExtensionAvailable("WGL_ARB_pixel_format");
+        boolean haveWGLARBMultisample = sharedCtx.isExtensionAvailable("WGL_ARB_multisample");
+        if(DEBUG) {
+            System.err.println("HDC2GLCapabilities: ARB_pixel_format: "+haveWGLChoosePixelFormatARB);
+            System.err.println("HDC2GLCapabilities: ARB_multisample : "+haveWGLARBMultisample);
+        }
+
+        if (!haveWGLChoosePixelFormatARB) {
           return false;
         }
 
@@ -306,13 +311,11 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
           iattributes[niattribs++] = caps.getAccumAlphaBits();
         }
 
-        if (wglExt.isExtensionAvailable("WGL_ARB_multisample")) {
-          if (caps.getSampleBuffers()) {
+        if (caps.getSampleBuffers() && haveWGLARBMultisample) {
             iattributes[niattribs++] = WGLExt.WGL_SAMPLE_BUFFERS_ARB;
             iattributes[niattribs++] = GL.GL_TRUE;
             iattributes[niattribs++] = WGLExt.WGL_SAMPLES_ARB;
             iattributes[niattribs++] = caps.getNumSamples();
-          }
         }
 
         boolean rtt      = caps.getPbufferRenderToTexture();
@@ -326,19 +329,19 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
           }
 
           if (rect) {
-            if (!wglExt.isExtensionAvailable("GL_NV_texture_rectangle")) {
+            if (!sharedCtx.isExtensionAvailable("GL_NV_texture_rectangle")) {
               throw new GLException("Render-to-texture-rectangle requires GL_NV_texture_rectangle extension");
             }
           }
 
           if (useFloat) {
-            if (!wglExt.isExtensionAvailable("WGL_ATI_pixel_format_float") &&
-                !wglExt.isExtensionAvailable("WGL_NV_float_buffer")) {
+            if (!sharedCtx.isExtensionAvailable("WGL_ATI_pixel_format_float") &&
+                !sharedCtx.isExtensionAvailable("WGL_NV_float_buffer")) {
               throw new GLException("Floating-point pbuffers not supported by this hardware");
             }
 
             // Prefer NVidia extension over ATI
-            if (wglExt.isExtensionAvailable("WGL_NV_float_buffer")) {
+            if (sharedCtx.isExtensionAvailable("WGL_NV_float_buffer")) {
               ati = false;
               floatMode[0] = GLPbuffer.NV_FLOAT;
             } else {
diff --git a/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsWGLGraphicsConfigurationFactory.java b/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsWGLGraphicsConfigurationFactory.java
index 46b169343..4989d86a2 100644
--- a/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsWGLGraphicsConfigurationFactory.java
+++ b/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsWGLGraphicsConfigurationFactory.java
@@ -179,18 +179,21 @@ public class WindowsWGLGraphicsConfigurationFactory extends GraphicsConfiguratio
 
                           if(WindowsWGLGraphicsConfiguration.GLCapabilities2AttribList(capabilities,
                                                                                        iattributes,
-                                                                                       wglExt,
+                                                                                       sharedContext,
                                                                                        false,
                                                                                        null)) {
                             int[] pformats = new int[WindowsWGLGraphicsConfiguration.MAX_PFORMATS];
                             int[] numFormatsTmp = new int[1];
                             if (wglExt.wglChoosePixelFormatARB(hdc,
-                                                                 iattributes, 0,
-                                                                 fattributes, 0,
-                                                                 WindowsWGLGraphicsConfiguration.MAX_PFORMATS,
-                                                                 pformats, 0,
-                                                                 numFormatsTmp, 0)) {
+                                                               iattributes, 0,
+                                                               fattributes, 0,
+                                                               WindowsWGLGraphicsConfiguration.MAX_PFORMATS,
+                                                               pformats, 0,
+                                                               numFormatsTmp, 0)) {
                               numFormats = numFormatsTmp[0];
+                              if (DEBUG) {
+                                System.err.println(getThreadName() + ": NumFormats (wglChoosePixelFormatARB) " + numFormats);
+                              }
                               if (recommendedPixelFormat<=0 && numFormats > 0) {
                                 recommendedPixelFormat = pformats[0];
                                 if (DEBUG) {
@@ -215,7 +218,7 @@ public class WindowsWGLGraphicsConfigurationFactory extends GraphicsConfiguratio
                           }
                         }
 
-                        availableCaps = WindowsWGLGraphicsConfiguration.HDC2GLCapabilities(wglExt, hdc, -1, glProfile, pixelFormatSet, onscreen, usePBuffer);
+                        availableCaps = WindowsWGLGraphicsConfiguration.HDC2GLCapabilities(sharedContext, hdc, -1, glProfile, pixelFormatSet, onscreen, usePBuffer);
                         gotAvailableCaps = null!=availableCaps ;
                         choosenBywGLPixelFormat = gotAvailableCaps ;
                       } else if (DEBUG) {
@@ -243,6 +246,10 @@ public class WindowsWGLGraphicsConfigurationFactory extends GraphicsConfiguratio
               throw new GLException("Unable to enumerate pixel formats of window " +
                                     toHexString(hdc) + " for GLCapabilitiesChooser (LastError: "+GDI.GetLastError()+")");
             }
+            if (DEBUG) {
+                System.err.println(getThreadName() + ": NumFormats (DescribePixelFormat) " + numFormats);
+            }
+
             availableCaps = new GLCapabilitiesImmutable[numFormats];
             for (int i = 0; i < numFormats; i++) {
               if (GDI.DescribePixelFormat(hdc, 1 + i, pfd.size(), pfd) == 0) {
diff --git a/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/awt/WindowsAWTWGLGraphicsConfigurationFactory.java b/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/awt/WindowsAWTWGLGraphicsConfigurationFactory.java
index 363881ef0..da4f2113d 100644
--- a/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/awt/WindowsAWTWGLGraphicsConfigurationFactory.java
+++ b/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/awt/WindowsAWTWGLGraphicsConfigurationFactory.java
@@ -93,11 +93,6 @@ public class WindowsAWTWGLGraphicsConfigurationFactory extends GraphicsConfigura
             System.err.println("WindowsAWTWGLGraphicsConfigurationFactory: got "+absScreen);
         }
         GraphicsConfiguration gc = device.getDefaultConfiguration();
-        capsChosen = AWTGraphicsConfiguration.setupCapabilitiesRGBABits(capsChosen, gc);
-        if(DEBUG) {
-            System.err.println("AWT Colormodel compatible: "+capsChosen);
-        }
-
         WindowsGraphicsDevice winDevice = new WindowsGraphicsDevice(AbstractGraphicsDevice.DEFAULT_UNIT);
         DefaultGraphicsScreen winScreen = new DefaultGraphicsScreen(winDevice, awtScreen.getIndex());
         if(DEBUG) {
@@ -116,7 +111,9 @@ public class WindowsAWTWGLGraphicsConfigurationFactory extends GraphicsConfigura
         if(DEBUG) {
             System.err.println("WindowsAWTWGLGraphicsConfigurationFactory: chosen "+winConfig);
         }
-        
-        return new AWTGraphicsConfiguration(awtScreen, winConfig.getChosenCapabilities(), winConfig.getRequestedCapabilities(), gc, winConfig);
+
+        // We have nothing to match .. so choose the default
+        return new AWTGraphicsConfiguration(awtScreen, winConfig.getChosenCapabilities(), winConfig.getRequestedCapabilities(),
+                                            gc, winConfig);
     }
 }
diff --git a/src/jogl/classes/com/jogamp/opengl/impl/x11/glx/X11GLXGraphicsConfigurationFactory.java b/src/jogl/classes/com/jogamp/opengl/impl/x11/glx/X11GLXGraphicsConfigurationFactory.java
index 1b20040b0..d3f9f378f 100644
--- a/src/jogl/classes/com/jogamp/opengl/impl/x11/glx/X11GLXGraphicsConfigurationFactory.java
+++ b/src/jogl/classes/com/jogamp/opengl/impl/x11/glx/X11GLXGraphicsConfigurationFactory.java
@@ -176,6 +176,28 @@ public class X11GLXGraphicsConfigurationFactory extends GraphicsConfigurationFac
         return res;
     }
 
+    protected static X11GLXGraphicsConfiguration fetchGraphicsConfigurationFBConfig(X11GraphicsScreen x11Screen, int fbID, GLProfile glp) {
+        AbstractGraphicsDevice absDevice = x11Screen.getDevice();
+        long display = absDevice.getHandle();
+        int screen = x11Screen.getIndex();
+
+        long fbcfg = X11GLXGraphicsConfiguration.glXFBConfigID2FBConfig(display, screen, fbID);
+        if( !X11GLXGraphicsConfiguration.GLXFBConfigValid( display, fbcfg ) ) {
+            if(DEBUG) {
+                System.err.println("X11GLXGraphicsConfiguration.chooseGraphicsConfigurationFBConfig: Failed - GLX FBConfig invalid: ("+x11Screen+","+toHexString(fbID)+"): fbcfg: "+toHexString(fbcfg));
+            }
+            return null;
+        }
+        XVisualInfo visualInfo = GLX.glXGetVisualFromFBConfig(display, fbcfg);
+        if (visualInfo==null) {
+            System.err.println("X11GLXGraphicsConfiguration.chooseGraphicsConfigurationFBConfig: Failed glXGetVisualFromFBConfig ("+x11Screen+", "+toHexString(fbcfg)+")");
+            return null;
+        }
+        GLCapabilitiesImmutable caps = X11GLXGraphicsConfiguration.GLXFBConfig2GLCapabilities(glp, display, fbcfg, true, true, true, GLXUtil.isMultisampleAvailable(display));
+        return new X11GLXGraphicsConfiguration(x11Screen, caps, caps, new DefaultGLCapabilitiesChooser(), visualInfo, fbcfg, fbID);
+
+    }
+
     private static X11GLXGraphicsConfiguration chooseGraphicsConfigurationFBConfig(GLCapabilitiesImmutable capsChosen,
                                                                                    GLCapabilitiesImmutable capsReq,
                                                                                    GLCapabilitiesChooser chooser,
diff --git a/src/jogl/classes/com/jogamp/opengl/impl/x11/glx/awt/X11AWTGLXGraphicsConfigurationFactory.java b/src/jogl/classes/com/jogamp/opengl/impl/x11/glx/awt/X11AWTGLXGraphicsConfigurationFactory.java
index 03955b439..cf5b1a650 100644
--- a/src/jogl/classes/com/jogamp/opengl/impl/x11/glx/awt/X11AWTGLXGraphicsConfigurationFactory.java
+++ b/src/jogl/classes/com/jogamp/opengl/impl/x11/glx/awt/X11AWTGLXGraphicsConfigurationFactory.java
@@ -43,6 +43,8 @@ import javax.media.opengl.*;
 import com.jogamp.opengl.impl.*;
 import com.jogamp.nativewindow.impl.jawt.x11.*;
 import com.jogamp.nativewindow.impl.x11.*;
+import com.jogamp.opengl.impl.x11.glx.X11GLXGraphicsConfigurationFactory;
+import java.awt.image.ColorModel;
 
 public class X11AWTGLXGraphicsConfigurationFactory extends GraphicsConfigurationFactory {
     protected static final boolean DEBUG = Debug.debug("GraphicsConfiguration");
@@ -83,12 +85,11 @@ public class X11AWTGLXGraphicsConfigurationFactory extends GraphicsConfiguration
             System.err.println("X11AWTGLXGraphicsConfigurationFactory: got "+absScreen);
         }
         
-        GraphicsConfiguration gc;
-        X11GraphicsConfiguration x11Config;
-
         long displayHandle = X11SunJDKReflection.graphicsDeviceGetDisplay(device);
+        boolean owner = false;
         if(0==displayHandle) {
             displayHandle = X11Util.createDisplay(null);
+            owner = true;
             if(DEBUG) {
                 System.err.println("X11AWTGLXGraphicsConfigurationFactory: using a thread local X11 display");
             }
@@ -96,47 +97,81 @@ public class X11AWTGLXGraphicsConfigurationFactory extends GraphicsConfiguration
             if(DEBUG) {
                 System.err.println("X11AWTGLXGraphicsConfigurationFactory: using AWT X11 display 0x"+Long.toHexString(displayHandle));
             }
-            String name = X11Util.XDisplayString(displayHandle);
-            displayHandle = X11Util.createDisplay(name);
+            /**
+             * May cause an exception at X11 Display destruction,
+             * so reuse AWT's display for now, which seems to work nicely.
+                String name = X11Util.XDisplayString(displayHandle);
+                displayHandle = X11Util.createDisplay(name);
+                owner = true;
+             */
         }
         ((AWTGraphicsDevice)awtScreen.getDevice()).setSubType(NativeWindowFactory.TYPE_X11, displayHandle);
         X11GraphicsDevice x11Device = new X11GraphicsDevice(displayHandle, AbstractGraphicsDevice.DEFAULT_UNIT);
-        x11Device.setCloseDisplay(true);
+        x11Device.setCloseDisplay(owner);
         X11GraphicsScreen x11Screen = new X11GraphicsScreen(x11Device, awtScreen.getIndex());
         if(DEBUG) {
             System.err.println("X11AWTGLXGraphicsConfigurationFactory: made "+x11Screen);
         }
-
-        gc = device.getDefaultConfiguration();
-        capsChosen = AWTGraphicsConfiguration.setupCapabilitiesRGBABits(capsChosen, gc);
-        if(DEBUG) {
-            System.err.println("AWT Colormodel compatible: "+capsChosen);
-        }
         GraphicsConfigurationFactory factory = GraphicsConfigurationFactory.getFactory(x11Device);
-        x11Config = (X11GraphicsConfiguration)factory.chooseGraphicsConfiguration(capsChosen, capsRequested, chooser, x11Screen);
+        GraphicsConfiguration[] configs = device.getConfigurations();
+
+        //
+        // Match the X11/GL Visual with AWT:
+        //   - choose a config AWT agnostic and then
+        //   - try to find the visual within the GraphicsConfiguration
+        //
+        // The resulting GraphicsConfiguration has to be 'forced' on the AWT native peer,
+        // ie. returned by GLCanvas's getGraphicsConfiguration() befor call by super.addNotify().
+        //
+        X11GraphicsConfiguration x11Config = (X11GraphicsConfiguration) factory.chooseGraphicsConfiguration(capsChosen, capsRequested, chooser, x11Screen);
         if (x11Config == null) {
-            throw new GLException("Unable to choose a GraphicsConfiguration: "+capsChosen+",\n\t"+chooser+"\n\t"+x11Screen);
+            throw new GLException("Unable to choose a GraphicsConfiguration (1): "+capsChosen+",\n\t"+chooser+"\n\t"+x11Screen);
         }
-
         long visualID = x11Config.getVisualID();
-        // Now figure out which GraphicsConfiguration corresponds to this
-        // visual by matching the visual ID
-        GraphicsConfiguration[] configs = device.getConfigurations();
         for (int i = 0; i < configs.length; i++) {
-            GraphicsConfiguration config = configs[i];
-            if (config != null) {
-                if (X11SunJDKReflection.graphicsConfigurationGetVisualID(config) == visualID) {
-                    return new AWTGraphicsConfiguration(awtScreen, x11Config.getChosenCapabilities(), x11Config.getRequestedCapabilities(), 
-                                                        config, x11Config);
+            GraphicsConfiguration gc = configs[i];
+            if (gc != null) {
+                if (X11SunJDKReflection.graphicsConfigurationGetVisualID(gc) == visualID) {
+                    if(DEBUG) {
+                        System.err.println("Found matching AWT visual: 0x"+Long.toHexString(visualID) +" -> "+x11Config);
+                    }
+                    return new AWTGraphicsConfiguration(awtScreen,
+                                                        x11Config.getChosenCapabilities(), x11Config.getRequestedCapabilities(),
+                                                        gc, x11Config);
                 }
             }
         }
+
+        // try again using an AWT Colormodel compatible configuration
+        GraphicsConfiguration gc = device.getDefaultConfiguration();
+        capsChosen = AWTGraphicsConfiguration.setupCapabilitiesRGBABits(capsChosen, gc);
+        x11Config = (X11GraphicsConfiguration) factory.chooseGraphicsConfiguration(capsChosen, capsRequested, chooser, x11Screen);
+        if (x11Config == null) {
+            throw new GLException("Unable to choose a GraphicsConfiguration (2): "+capsChosen+",\n\t"+chooser+"\n\t"+x11Screen);
+        }
+        visualID = x11Config.getVisualID();
+        for (int i = 0; i < configs.length; i++) {
+            gc = configs[i];
+            if (gc != null) {
+                if (X11SunJDKReflection.graphicsConfigurationGetVisualID(gc) == visualID) {
+                    if(DEBUG) {
+                        System.err.println("Found matching default AWT visual: 0x"+Long.toHexString(visualID) +" -> "+x11Config);
+                    }
+                    return new AWTGraphicsConfiguration(awtScreen,
+                                                        x11Config.getChosenCapabilities(), x11Config.getRequestedCapabilities(),
+                                                        gc, x11Config);
+                }
+            }
+        }
+
         // Either we weren't able to reflectively introspect on the
         // X11GraphicsConfig or something went wrong in the steps above;
         // Let's take the default configuration as used on Windows and MacOSX then ..
         if(DEBUG) {
             System.err.println("!!! Using default configuration");
         }
+
+        gc = device.getDefaultConfiguration();
         return new AWTGraphicsConfiguration(awtScreen, x11Config.getChosenCapabilities(), x11Config.getRequestedCapabilities(), gc, x11Config);
     }
 }
diff --git a/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java b/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java
index dba041f8d..b20a4ff13 100644
--- a/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java
+++ b/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java
@@ -94,10 +94,8 @@ public class GLCanvas extends Canvas implements AWTGLAutoDrawable {
   private boolean sendReshape = false;
   
   // copy of the cstr args ..
-  private GLCapabilitiesImmutable capabilities;
   private GLCapabilitiesChooser chooser;
   private GLContext shareWith;
-  private GraphicsDevice device;
 
   /** Creates a new GLCanvas component with a default set of OpenGL
       capabilities, using the default OpenGL capabilities selection
@@ -133,31 +131,54 @@ public class GLCanvas extends Canvas implements AWTGLAutoDrawable {
                   GLContext shareWith,
                   GraphicsDevice device) {
     /*
-     * Workaround for Xinerama, always pass null so we can detect whether
-     * super.getGraphicsConfiguration() is returning the Canvas' GC (null),
-     * or an ancestor component's GC (non-null) in the overridden version
-     * below.
+     * Determination of the native window is made in 'super.addNotify()',
+     * which creates the native peer using AWT's GraphicsConfiguration.
+     * GraphicsConfiguration is returned by this class overwritten
+     * 'getGraphicsConfiguration()', which returns our OpenGL compatible
+     * 'chosen' GraphicsConfiguration.
      */
     super();
 
     if(null==capsReqUser) {
-        capabilities = new GLCapabilities(defaultGLProfile);
+        capsReqUser = new GLCapabilities(defaultGLProfile);
     } else {
         // don't allow the user to change data
-        capabilities = (GLCapabilitiesImmutable) capsReqUser.cloneMutable();
+        capsReqUser = (GLCapabilitiesImmutable) capsReqUser.cloneMutable();
     }
-    glProfile = capabilities.getGLProfile();
 
+    if(null==device) {
+        GraphicsConfiguration gc = super.getGraphicsConfiguration();
+        if(null!=gc) {
+            device = gc.getDevice();
+        }
+    }
+
+    this.glProfile = capsReqUser.getGLProfile();
     this.chooser = chooser;
-    this.shareWith=shareWith;
-    this.device = device;
+    this.shareWith = shareWith;
+
+    /*
+     * Save the 'chosen' GraphicsConfiguration for use in getGraphicsConfiguration().
+     */
+    awtConfig = chooseGraphicsConfiguration(capsReqUser, capsReqUser, chooser, device);
+    if(null==awtConfig) {
+        throw new GLException("Error: NULL AWTGraphicsConfiguration");
+    }
+    chosen = awtConfig.getGraphicsConfiguration();
+
+    if (!Beans.isDesignTime()) {
+        // no lock required, since this resource ain't available yet
+        drawable = GLDrawableFactory.getFactory(glProfile).createGLDrawable(NativeWindowFactory.getNativeWindow(this, awtConfig));
+        context = (GLContextImpl) drawable.createContext(shareWith);
+        context.setSynchronized(true);
+    }
   }
 
   protected interface DestroyMethod {
     public void destroyMethod();
   }
 
-  protected final static Object  addClosingListener(Component c, final DestroyMethod d) {
+  protected final static Object addClosingListener(Component c, final DestroyMethod d) {
     WindowAdapter cl = null;
     Window w = getWindow(c);
     if(null!=w) {
@@ -303,6 +324,9 @@ public class GLCanvas extends Canvas implements AWTGLAutoDrawable {
   private Object closingListenerLock = new Object();
 
   public void display() {
+    if(!drawable.isRealized()) {
+        return; // not yet available ..
+    }
     maybeDoSingleThreadedWorkaround(displayOnEventDispatchThreadAction,
                                     displayAction);
     if(null==closingListener) {
@@ -416,49 +440,18 @@ public class GLCanvas extends Canvas implements AWTGLAutoDrawable {
         Exception ex1 = new Exception(Thread.currentThread().getName()+" - Info: addNotify - start");
         ex1.printStackTrace();
     }
+    // 'super.addNotify()' determines the GraphicsConfiguration,
+    // while calling this class's overriden 'getGraphicsConfiguration()' method.
+    // Then it creates the native peer.
+    // Hence we chose the proper GraphicsConfiguration beforehand (see constructor).
     super.addNotify();
+
     if (!Beans.isDesignTime()) {
+        // no lock required, since this resource ain't available yet
         disableBackgroundErase();
-
-        if(null==device) {
-            GraphicsConfiguration gc = super.getGraphicsConfiguration();
-            if(null!=gc) {
-                device = gc.getDevice();
-            }
-        }
-
-        /*
-         * Save the chosen capabilities for use in getGraphicsConfiguration().
-         */
-        NativeWindowFactory.getDefaultToolkitLock().lock();
-        try {
-            awtConfig = chooseGraphicsConfiguration(capabilities, capabilities, chooser, device);
-            if(DEBUG) {
-                System.err.println(Thread.currentThread().getName()+" - Created Config: "+awtConfig);
-            }
-            if(null!=awtConfig) {
-              // update ..
-              chosen = awtConfig.getGraphicsConfiguration();
-
-            }
-            if(null==awtConfig) {
-              throw new GLException("Error: AWTGraphicsConfiguration is null");
-            }
-            // awtConfig.getScreen().getDevice().lock();
-            try {
-                drawable = GLDrawableFactory.getFactory(glProfile).createGLDrawable(NativeWindowFactory.getNativeWindow(this, awtConfig));
-                context = (GLContextImpl) drawable.createContext(shareWith);
-                context.setSynchronized(true);
-                drawable.setRealized(true);
-            } finally {
-                // awtConfig.getScreen().getDevice().unlock();
-            }
-        } finally {
-            NativeWindowFactory.getDefaultToolkitLock().unlock();
-        }
-
+        drawable.setRealized(true);
         if(DEBUG) {
-            System.err.println(Thread.currentThread().getName()+" - Created Drawable: "+drawable);
+            System.err.println(Thread.currentThread().getName()+" - Realized Drawable: "+drawable);
         }
     }
     if(DEBUG) {
@@ -785,9 +778,9 @@ public class GLCanvas extends Canvas implements AWTGLAutoDrawable {
 
     AbstractGraphicsScreen aScreen = AWTGraphicsScreen.createScreenDevice(device, AbstractGraphicsDevice.DEFAULT_UNIT);
     AWTGraphicsConfiguration config = (AWTGraphicsConfiguration)
-      GraphicsConfigurationFactory.getFactory(AWTGraphicsDevice.class).chooseGraphicsConfiguration(capsChosen,
-                                                                                                   capsRequested,
-                                                                                                   chooser, aScreen);
+          GraphicsConfigurationFactory.getFactory(AWTGraphicsDevice.class).chooseGraphicsConfiguration(capsChosen,
+                                                                                                       capsRequested,
+                                                                                                       chooser, aScreen);
     if (config == null) {
       throw new GLException("Error: Couldn't fetch AWTGraphicsConfiguration");
     }
diff --git a/src/junit/com/jogamp/test/junit/jogl/awt/TestAWT01GLn.java b/src/junit/com/jogamp/test/junit/jogl/awt/TestAWT01GLn.java
index f3c228a5d..09dfc856d 100644
--- a/src/junit/com/jogamp/test/junit/jogl/awt/TestAWT01GLn.java
+++ b/src/junit/com/jogamp/test/junit/jogl/awt/TestAWT01GLn.java
@@ -89,8 +89,6 @@ public class TestAWT01GLn extends UITestCase {
 
         glCanvas.addGLEventListener(new Gears());
 
-        glCanvas.display(); // one in process display 
-
         try {
             javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
                 public void run() {
@@ -100,6 +98,9 @@ public class TestAWT01GLn extends UITestCase {
             t.printStackTrace();
             Assume.assumeNoException(t);
         }
+
+        glCanvas.display(); // one in process display
+
         Animator animator = new Animator(glCanvas);
         animator.start();
 
diff --git a/src/junit/com/jogamp/test/junit/jogl/awt/TestSwingAWT01GLn.java b/src/junit/com/jogamp/test/junit/jogl/awt/TestSwingAWT01GLn.java
index 03d4f37bf..a32dc90dc 100644
--- a/src/junit/com/jogamp/test/junit/jogl/awt/TestSwingAWT01GLn.java
+++ b/src/junit/com/jogamp/test/junit/jogl/awt/TestSwingAWT01GLn.java
@@ -86,8 +86,8 @@ public class TestSwingAWT01GLn extends UITestCase {
                     glCanvas[0].addGLEventListener(new Gears());
                     window.add(glCanvas[0]);
                     window.setSize(512, 512);
-                    glCanvas[0].display();
                     window.setVisible(true);
+                    glCanvas[0].display();
                 }
             };
 
diff --git a/src/junit/com/jogamp/test/junit/jogl/caps/MultisampleChooser01.java b/src/junit/com/jogamp/test/junit/jogl/caps/MultisampleChooser01.java
new file mode 100644
index 000000000..7dcde18c9
--- /dev/null
+++ b/src/junit/com/jogamp/test/junit/jogl/caps/MultisampleChooser01.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
+ * Copyright (c) 2010 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:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution 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.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ *
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+package com.jogamp.test.junit.jogl.caps;
+
+import javax.media.opengl.DefaultGLCapabilitiesChooser;
+import javax.media.opengl.GLCapabilitiesImmutable;
+
+class MultisampleChooser01 extends DefaultGLCapabilitiesChooser {
+
+    public int chooseCapabilities(GLCapabilitiesImmutable desired, GLCapabilitiesImmutable[] available, int windowSystemRecommendedChoice) {
+        boolean anyHaveSampleBuffers = false;
+        for (int i = 0; i < available.length; i++) {
+            GLCapabilitiesImmutable caps = available[i];
+            if (caps != null && caps.getSampleBuffers()) {
+                anyHaveSampleBuffers = true;
+                break;
+            }
+        }
+        int selection = super.chooseCapabilities(desired, available, windowSystemRecommendedChoice);
+        if (!anyHaveSampleBuffers) {
+            System.err.println("WARNING: antialiasing will be disabled because none of the available pixel formats had it to offer");
+        } else {
+            if (!available[selection].getSampleBuffers()) {
+                System.err.println("WARNING: antialiasing will be disabled because the DefaultGLCapabilitiesChooser didn't supply it");
+            }
+        }
+        return selection;
+    }
+}
diff --git a/src/junit/com/jogamp/test/junit/jogl/caps/MultisampleDemo01.java b/src/junit/com/jogamp/test/junit/jogl/caps/MultisampleDemo01.java
new file mode 100644
index 000000000..e399de0bc
--- /dev/null
+++ b/src/junit/com/jogamp/test/junit/jogl/caps/MultisampleDemo01.java
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
+ * Copyright (c) 2010 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:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution 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.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ *
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+
+package com.jogamp.test.junit.jogl.caps;
+
+import com.jogamp.opengl.impl.x11.glx.GLX;
+import com.jogamp.opengl.impl.x11.glx.X11GLXGraphicsConfiguration;
+import javax.media.nativewindow.AbstractGraphicsConfiguration;
+import javax.media.nativewindow.NativeWindowFactory;
+import javax.media.opengl.GL;
+import javax.media.opengl.GL2;
+import javax.media.opengl.GL2ES1;
+import javax.media.opengl.GLAutoDrawable;
+import javax.media.opengl.GLEventListener;
+import javax.media.opengl.GLPipelineFactory;
+
+class MultisampleDemo01 implements GLEventListener {
+
+    static boolean glDebug = false;
+    static boolean glTrace = false;
+
+    boolean multisample;
+
+    public MultisampleDemo01(boolean multisample) {
+        this.multisample = multisample;
+    }
+
+    public void init(GLAutoDrawable drawable) {
+        AbstractGraphicsConfiguration config = drawable.getNativeSurface().getGraphicsConfiguration().getNativeGraphicsConfiguration();
+        System.err.println();
+        System.err.println("Info: " + config);
+        System.err.println();
+        if (NativeWindowFactory.TYPE_X11.equals(NativeWindowFactory.getNativeWindowType(false))) {
+            X11GLXGraphicsConfiguration x11config = (X11GLXGraphicsConfiguration) config;
+            long display = drawable.getNativeSurface().getDisplayHandle();
+            int[] foo = new int[1];
+            GLX.glXGetFBConfigAttrib(display, x11config.getFBConfig(), GLX.GLX_SAMPLES, foo, 0);
+            System.out.println("GLX_SAMPLES " + foo[0]);
+            GLX.glXGetFBConfigAttrib(display, x11config.getFBConfig(), GLX.GLX_SAMPLE_BUFFERS, foo, 0);
+            System.out.println("GLX_SAMPLE_BUFFERS " + foo[0]);
+        }
+        GL _gl = drawable.getGL();
+        if (glDebug) {
+            try {
+                // Debug ..
+                _gl = _gl.getContext().setGL(GLPipelineFactory.create("javax.media.opengl.Debug", GL2.class, _gl, null));
+                if (glTrace) {
+                    // Trace ..
+                    _gl = _gl.getContext().setGL(GLPipelineFactory.create("javax.media.opengl.Trace", GL2.class, _gl, new Object[]{System.err}));
+                }
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+        GL2 gl = _gl.getGL2();
+        if (multisample) {
+            gl.glEnable(GL.GL_MULTISAMPLE);
+        }
+        gl.glClearColor(0, 0, 0, 0);
+        //      gl.glEnable(GL.GL_DEPTH_TEST);
+        //      gl.glDepthFunc(GL.GL_LESS);
+        gl.glMatrixMode(GL2ES1.GL_MODELVIEW);
+        gl.glLoadIdentity();
+        gl.glMatrixMode(GL2ES1.GL_PROJECTION);
+        gl.glLoadIdentity();
+        gl.glOrtho(-1, 1, -1, 1, -1, 1);
+        if (multisample) {
+            gl.glDisable(GL.GL_MULTISAMPLE);
+        }
+    }
+
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
+    public void display(GLAutoDrawable drawable) {
+        GL2 gl = drawable.getGL().getGL2();
+        if (multisample) {
+            gl.glEnable(GL.GL_MULTISAMPLE);
+        }
+        gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
+        int numSteps = 20;
+        double increment = Math.PI / numSteps;
+        double radius = 1;
+        gl.glBegin(GL.GL_LINES);
+        for (int i = numSteps - 1; i >= 0; i--) {
+            gl.glVertex3d(radius * Math.cos(i * increment), radius * Math.sin(i * increment), 0);
+            gl.glVertex3d(-1.0 * radius * Math.cos(i * increment), -1.0 * radius * Math.sin(i * increment), 0);
+        }
+        gl.glEnd();
+        if (multisample) {
+            gl.glDisable(GL.GL_MULTISAMPLE);
+        }
+    }
+
+    // Unused routines
+    public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
+    }
+
+    public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {
+    }
+}
diff --git a/src/junit/com/jogamp/test/junit/jogl/caps/TestMultisampleAWT.java b/src/junit/com/jogamp/test/junit/jogl/caps/TestMultisampleAWT.java
new file mode 100755
index 000000000..c6e7f08fa
--- /dev/null
+++ b/src/junit/com/jogamp/test/junit/jogl/caps/TestMultisampleAWT.java
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
+ * Copyright (c) 2010 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:
+ * 
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ * - Redistribution 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.
+ * 
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ * 
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ * 
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+
+package com.jogamp.test.junit.jogl.caps;
+
+import com.jogamp.test.junit.util.MiscUtils;
+import java.awt.*;
+import javax.media.opengl.*;
+import javax.media.opengl.awt.GLCanvas;
+import com.jogamp.test.junit.util.UITestCase;
+import javax.media.nativewindow.AbstractGraphicsDevice;
+import javax.media.nativewindow.AbstractGraphicsScreen;
+import javax.media.nativewindow.GraphicsConfigurationFactory;
+import javax.media.nativewindow.awt.AWTGraphicsConfiguration;
+import javax.media.nativewindow.awt.AWTGraphicsDevice;
+import javax.media.nativewindow.awt.AWTGraphicsScreen;
+import org.junit.Test;
+
+
+public class TestMultisampleAWT extends UITestCase {
+  static long durationPerTest = 500; // ms
+  private GLCanvas canvas;
+
+  public static void main(String[] args) {
+     for(int i=0; i<args.length; i++) {
+        if(args[i].equals("-time")) {
+            durationPerTest = MiscUtils.atoi(args[++i], 500);
+        }
+     }
+     System.out.println("durationPerTest: "+durationPerTest);
+     String tstname = TestMultisampleAWT.class.getName();
+     org.junit.runner.JUnitCore.main(tstname);
+  }
+
+  @Test
+  public void testMultiSampleAA4() throws InterruptedException {
+    testMultiSampleAAImpl(4);
+  }
+
+  // @Test
+  public void testMultiSampleNone() throws InterruptedException {
+    testMultiSampleAAImpl(0);
+  }
+
+  private void testMultiSampleAAImpl(int samples) throws InterruptedException {
+    GLCapabilities caps = new GLCapabilities(null);
+    GLCapabilitiesChooser chooser = new MultisampleChooser01();
+
+    if(samples>0) {
+        caps.setSampleBuffers(true);
+        caps.setNumSamples(samples);
+    }
+    // turns out we need to have alpha, 
+    // otherwise no AA will be visible.
+    caps.setAlphaBits(1); 
+
+    /**
+     * whatever I tried here (passing and preconfig GraphicsConfiguration)
+     * either it just didn't picked up .. or the context couldn't be made current.
+     *
+    GraphicsDevice gd = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice();
+    GraphicsConfiguration gc = AWTGraphicsConfiguration.getAWTGraphicsConfiguration(caps, gd);
+
+    AbstractGraphicsScreen aScreen = AWTGraphicsScreen.createScreenDevice(gd, AbstractGraphicsDevice.DEFAULT_UNIT);
+    AWTGraphicsConfiguration config = (AWTGraphicsConfiguration)
+      GraphicsConfigurationFactory.getFactory(AWTGraphicsDevice.class).chooseGraphicsConfiguration(caps, caps,
+                                                                                                   chooser, aScreen);
+    canvas = new GLCanvas(caps, chooser, null, gd, config.getGraphicsConfiguration(), config); */
+    canvas = new GLCanvas(caps, chooser, null, null);
+    canvas.addGLEventListener(new MultisampleDemo01(samples>0?true:false));
+    
+    Frame frame = new Frame("Multi Samples "+samples);
+    frame.setLayout(new BorderLayout());
+    canvas.setSize(512, 512);
+    frame.add(canvas, BorderLayout.CENTER);
+    frame.pack();
+    frame.setVisible(true);
+    frame.setLocation(0, 0);
+    canvas.requestFocus();
+
+    Thread.sleep(durationPerTest);
+
+    frame.dispose();
+  }
+}
diff --git a/src/junit/com/jogamp/test/junit/jogl/caps/TestMultisampleNEWT.java b/src/junit/com/jogamp/test/junit/jogl/caps/TestMultisampleNEWT.java
new file mode 100755
index 000000000..c060828ec
--- /dev/null
+++ b/src/junit/com/jogamp/test/junit/jogl/caps/TestMultisampleNEWT.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
+ * Copyright (c) 2010 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:
+ * 
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ * - Redistribution 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.
+ * 
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ * 
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ * 
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+
+package com.jogamp.test.junit.jogl.caps;
+
+import com.jogamp.newt.opengl.GLWindow;
+import com.jogamp.test.junit.util.MiscUtils;
+import javax.media.opengl.*;
+import org.junit.Test;
+
+public class TestMultisampleNEWT {
+  static long durationPerTest = 500; // ms
+  private GLWindow window;
+
+  public static void main(String[] args) {
+     for(int i=0; i<args.length; i++) {
+        if(args[i].equals("-time")) {
+            durationPerTest = MiscUtils.atoi(args[++i], 500);
+        }
+     }
+     System.out.println("durationPerTest: "+durationPerTest);
+     String tstname = TestMultisampleNEWT.class.getName();
+     org.junit.runner.JUnitCore.main(tstname);
+  }
+
+  @Test
+  public void testMultiSampleAA4() throws InterruptedException {
+    testMultiSampleAAImpl(4);
+  }
+
+  // @Test
+  public void testMultiSampleNone() throws InterruptedException {
+    testMultiSampleAAImpl(0);
+  }
+
+  private void testMultiSampleAAImpl(int samples) throws InterruptedException {
+    GLCapabilities caps = new GLCapabilities(null);
+    GLCapabilitiesChooser chooser = new MultisampleChooser01();
+
+    if(samples>0) {
+        caps.setSampleBuffers(true);
+        caps.setNumSamples(4);
+    }
+    // turns out we need to have alpha, 
+    // otherwise no AA will be visible.
+    caps.setAlphaBits(1); 
+
+    window = GLWindow.create(caps);
+    window.setCapabilitiesChooser(chooser);
+    window.addGLEventListener(new MultisampleDemo01(samples>0?true:false));
+    window.setSize(512, 512);
+    window.setVisible(true);
+    window.setPosition(0, 0);
+    window.requestFocus();
+
+    GLCapabilitiesImmutable capsChosen0 = window.getChosenGLCapabilities();
+
+    Thread.sleep(durationPerTest);
+
+    window.destroy();
+  }
+
+}
diff --git a/src/junit/com/jogamp/test/junit/util/MiscUtils.java b/src/junit/com/jogamp/test/junit/util/MiscUtils.java
index 672bb7de0..bb2abcd87 100644
--- a/src/junit/com/jogamp/test/junit/util/MiscUtils.java
+++ b/src/junit/com/jogamp/test/junit/util/MiscUtils.java
@@ -32,8 +32,7 @@ package com.jogamp.test.junit.util;
 import java.lang.reflect.*;
 
 public class MiscUtils {
-    @Deprecated
-    public static int str2int(String str, int def) {
+    public static int atoi(String str, int def) {
         try {
             return Integer.parseInt(str);
         } catch (Exception ex) {
diff --git a/src/nativewindow/classes/javax/media/nativewindow/awt/AWTGraphicsConfiguration.java b/src/nativewindow/classes/javax/media/nativewindow/awt/AWTGraphicsConfiguration.java
index 41051ab46..c3d10de10 100644
--- a/src/nativewindow/classes/javax/media/nativewindow/awt/AWTGraphicsConfiguration.java
+++ b/src/nativewindow/classes/javax/media/nativewindow/awt/AWTGraphicsConfiguration.java
@@ -44,7 +44,6 @@ import javax.media.nativewindow.*;
 import java.awt.Component;
 import java.awt.GraphicsConfiguration;
 import java.awt.GraphicsDevice;
-import java.awt.Transparency;
 import java.awt.image.ColorModel;
 import javax.media.nativewindow.AbstractGraphicsConfiguration;
 import com.jogamp.nativewindow.impl.Debug;
@@ -125,14 +124,8 @@ public class AWTGraphicsConfiguration extends DefaultGraphicsConfiguration imple
    */
   public static CapabilitiesImmutable setupCapabilitiesRGBABits(CapabilitiesImmutable capabilitiesIn, GraphicsConfiguration gc) {
     Capabilities capabilities = (Capabilities) capabilitiesIn.cloneMutable();
-    
-    int cmTransparency = capabilities.isBackgroundOpaque()?Transparency.OPAQUE:Transparency.TRANSLUCENT;
-    ColorModel cm = gc.getColorModel(cmTransparency);
-    if(null==cm && !capabilities.isBackgroundOpaque()) {
-        capabilities.setBackgroundOpaque(true);
-        cmTransparency = Transparency.OPAQUE;
-        cm = gc.getColorModel(cmTransparency);
-    }
+
+    ColorModel cm = gc.getColorModel();
     if(null==cm) {
         throw new NativeWindowException("Could not determine AWT ColorModel");
     }