Fix WGL Bitmap Offscreen Drawable

In conjunction with the gluegen investigation (gluegen: fbdedff789077b5ffa07811590f771b6f9a4f3a7),
on Windows the type LONG is always 32bit, hence we have to declare:
  typedef __int32             LONG;

Besides, WGL_DRAW_TO_PBUFFER_ARB and WGL_DRAW_TO_BITMAP_ARB were missing in the
WGL/ARB attribute query, and the latter was not set in caps -> attributes.

Added fail safe exception for null chosen caps, if X11/WGL algo fails to determine.

9 files changed, 286 insertions, 203 deletions

diff --git a/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsBitmapWGLDrawable.java b/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsBitmapWGLDrawable.java
index 8780af7b3..18c868c6d 100644
--- a/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsBitmapWGLDrawable.java
+++ b/src/jogl/classes/com/jogamp/opengl/impl/windows/wgl/WindowsBitmapWGLDrawable.java
@@ -40,6 +40,7 @@
 
 package com.jogamp.opengl.impl.windows.wgl;
 
+import com.jogamp.common.nio.PointerBuffer;
 import javax.media.nativewindow.NativeSurface;
 import javax.media.nativewindow.SurfaceChangeable;
 import javax.media.opengl.GLContext;
@@ -73,11 +74,19 @@ public class WindowsBitmapWGLDrawable extends WindowsWGLDrawable {
   }
 
   private void create() {
+    int werr;
     NativeSurface ns = getNativeSurface();
+    if(DEBUG) {
+        System.err.println("WindowsBitmapWGLDrawable (1): "+ns);
+    }
     WindowsWGLGraphicsConfiguration config = (WindowsWGLGraphicsConfiguration)ns.getGraphicsConfiguration().getNativeGraphicsConfiguration();
     GLCapabilitiesImmutable capabilities = (GLCapabilitiesImmutable)config.getRequestedCapabilities();
     int width = getWidth();
     int height = getHeight();
+
+    //
+    // 1. Create DIB Section
+    //
     BITMAPINFO info = BITMAPINFO.create();
     BITMAPINFOHEADER header = info.getBmiHeader();
     int bitsPerPixel = (capabilities.getRedBits() +
@@ -89,7 +98,8 @@ public class WindowsBitmapWGLDrawable extends WindowsWGLDrawable {
     // NOTE: negating the height causes the DIB to be in top-down row
     // order rather than bottom-up; ends up being correct during pixel
     // readback
-    header.setBiHeight(-1 * height);
+    // header.setBiHeight(-1 * height);
+    header.setBiHeight(height);
     header.setBiPlanes((short) 1);
     header.setBiBitCount((short) bitsPerPixel);
     header.setBiXPelsPerMeter(0);
@@ -97,22 +107,42 @@ public class WindowsBitmapWGLDrawable extends WindowsWGLDrawable {
     header.setBiClrUsed(0);
     header.setBiClrImportant(0);
     header.setBiCompression(GDI.BI_RGB);
-    header.setBiSizeImage(width * height * bitsPerPixel / 8);
+    int byteNum = width * height * ( bitsPerPixel >> 3 ) ;
+    header.setBiSizeImage(byteNum);
+
+    PointerBuffer pb = PointerBuffer.allocateDirect(1);
+    hbitmap = GDI.CreateDIBSection(0, info, GDI.DIB_RGB_COLORS, pb, 0, 0);
+    werr = GDI.GetLastError();
+    if(DEBUG) {
+        long p = ( pb.capacity() > 0 ) ? pb.get(0) : 0;
+        System.err.println("WindowsBitmapWGLDrawable: pb sz/ptr "+pb.capacity() + ", "+toHexString(p));
+        System.err.println("WindowsBitmapWGLDrawable: " + width+"x"+height +
+                            ", bpp " + bitsPerPixel +
+                            ", bytes " + byteNum +
+                            ", header sz " + header.size() +
+                            ", DIB ptr num " + pb.capacity()+
+                            ", "+capabilities+
+                            ", werr "+werr);
+    }
+    if (hbitmap == 0) {
+      throw new GLException("Error creating offscreen bitmap of " + ns + ", werr " + werr);
+    }
 
+    //
+    // 2. Create memory DC (device context) , and associate it with the DIB.
+    //
     long hdc = GDI.CreateCompatibleDC(0);
+    werr = GDI.GetLastError();
     if (hdc == 0) {
-      System.out.println("LastError: " + GDI.GetLastError());
-      throw new GLException("Error creating device context for offscreen OpenGL context");
+        GDI.DeleteObject(hbitmap);
+        hbitmap = 0;
+      throw new GLException("Error creating device context for offscreen OpenGL context, werr "+werr);
     }
     ((SurfaceChangeable)ns).setSurfaceHandle(hdc);
-
-    hbitmap = GDI.CreateDIBSection(hdc, info, GDI.DIB_RGB_COLORS, null, 0, 0);
-    if (hbitmap == 0) {
-      GDI.DeleteDC(hdc);
-      hdc = 0;
-      throw new GLException("Error creating offscreen bitmap of width " + width +
-                            ", height " + height);
+    if(DEBUG) {
+        System.err.println("WindowsBitmapWGLDrawable (2): "+ns);
     }
+
     if ((origbitmap = GDI.SelectObject(hdc, hbitmap)) == 0) {
       GDI.DeleteObject(hbitmap);
       hbitmap = 0;
@@ -120,6 +150,7 @@ public class WindowsBitmapWGLDrawable extends WindowsWGLDrawable {
       hdc = 0;
       throw new GLException("Error selecting bitmap into new device context");
     }
+    
     config.updateGraphicsConfiguration(getFactory(), ns, null);
   }
   
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 47b33dd6b..41889e703 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
@@ -144,7 +144,7 @@ public class WindowsPbufferWGLDrawable extends WindowsWGLDrawable {
     }
 
     if(!WindowsWGLGraphicsConfiguration.GLCapabilities2AttribList(capabilities,
-                                    iattributes, sharedCtx, -1, true, floatModeTmp)){
+                                    iattributes, sharedCtx, -1, floatModeTmp)){
       throw new GLException("Pbuffer-related extensions not supported");
     }
 
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 3db69be50..0ff1832d1 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
@@ -186,6 +186,8 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
     static int fillAttribsForGeneralWGLARBQuery(boolean haveWGLARBMultisample, int[] iattributes) {
         int niattribs = 0;
         iattributes[niattribs++] = WGLExt.WGL_DRAW_TO_WINDOW_ARB;
+        iattributes[niattribs++] = WGLExt.WGL_DRAW_TO_PBUFFER_ARB;
+        iattributes[niattribs++] = WGLExt.WGL_DRAW_TO_BITMAP_ARB;
         iattributes[niattribs++] = WGLExt.WGL_ACCELERATION_ARB;
         iattributes[niattribs++] = WGLExt.WGL_SUPPORT_OPENGL_ARB;
         iattributes[niattribs++] = WGLExt.WGL_DEPTH_BITS_ARB;
@@ -275,7 +277,7 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
     {
 
         if ( !WindowsWGLGraphicsConfiguration.GLCapabilities2AttribList(capabilities,
-                iattributes, sharedContext, accelerationMode, false, null))
+                iattributes, sharedContext, accelerationMode, null))
         {
             if (DEBUG) {
                 System.err.println("wglChoosePixelFormatARB1: GLCapabilities2AttribList failed: " + GDI.GetLastError());
@@ -403,8 +405,7 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
     static boolean GLCapabilities2AttribList(GLCapabilitiesImmutable caps,
                                              int[] iattributes,
                                              GLContextImpl sharedCtx,
-                                             int accellerationValue,
-                                             boolean pbuffer,
+                                             int accellerationValue,                                             
                                              int[] floatMode) throws GLException {
         boolean haveWGLChoosePixelFormatARB = sharedCtx.isExtensionAvailable(WGL_ARB_pixel_format);
         boolean haveWGLARBMultisample = sharedCtx.isExtensionAvailable(WGL_ARB_multisample);
@@ -417,6 +418,9 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
           return false;
         }
 
+        boolean onscreen = caps.isOnscreen();
+        boolean pbuffer = caps.isPBuffer();
+
         int niattribs = 0;
 
         iattributes[niattribs++] = WGLExt.WGL_SUPPORT_OPENGL_ARB;
@@ -425,11 +429,14 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
             iattributes[niattribs++] = WGLExt.WGL_ACCELERATION_ARB;
             iattributes[niattribs++] = accellerationValue;
         }
-        if (pbuffer) {
+        if (onscreen) {
+          iattributes[niattribs++] = WGLExt.WGL_DRAW_TO_WINDOW_ARB;
+          iattributes[niattribs++] = GL.GL_TRUE;
+        } else if (pbuffer) {
           iattributes[niattribs++] = WGLExt.WGL_DRAW_TO_PBUFFER_ARB;
           iattributes[niattribs++] = GL.GL_TRUE;
         } else {
-          iattributes[niattribs++] = WGLExt.WGL_DRAW_TO_WINDOW_ARB;
+          iattributes[niattribs++] = WGLExt.WGL_DRAW_TO_BITMAP_ARB;
           iattributes[niattribs++] = GL.GL_TRUE;
         }
 
@@ -620,7 +627,10 @@ public class WindowsWGLGraphicsConfiguration extends DefaultGraphicsConfiguratio
             res.setPBuffer(usePBuffer);
         } else {
             if(DEBUG) {
-              System.err.println("WGL DrawableType does not match: req(onscrn "+onscreen+", pbuffer "+usePBuffer+"), got(onscreen "+( 0 != (drawableTypeBits & WINDOW_BIT) )+", pbuffer "+( 0 != (drawableTypeBits & PBUFFER_BIT) )+", pixmap "+( 0 != (drawableTypeBits & BITMAP_BIT))+")");
+              System.err.println("WGL DrawableType does not match: req(onscrn "+onscreen+", pbuffer "+usePBuffer+
+                                 "), got(onscreen "+( 0 != (drawableTypeBits & WINDOW_BIT) )+
+                                 ", pbuffer "+( 0 != (drawableTypeBits & PBUFFER_BIT) )+
+                                 ", bitmap "+( 0 != (drawableTypeBits & BITMAP_BIT))+")");
             }
             return null;
         }
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 051dc5bad..0996438db 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
@@ -275,8 +275,14 @@ public class WindowsWGLGraphicsConfigurationFactory extends GLGraphicsConfigurat
                 }
                 pixelFormatCaps = availableCaps[chosenIndex];
                 pfdID = pformats[chosenIndex];
+                if( null == pixelFormatCaps) {
+                    throw new GLException("Null Capabilities with "+
+                                          " chosen pfdID: native recommended "+ (recommendedIndex+1) +
+                                          " chosen "+pfdID);
+                }
                 if (DEBUG) {
-                    System.err.println("!!! chosen pfdID "+pfdID+", caps " + pixelFormatCaps);
+                    System.err.println("!!! chosen pfdID (ARB): native recommended "+ (recommendedIndex+1) +
+                                       " chosen "+pfdID+", caps " + pixelFormatCaps);
                 }
             }
         } finally {
@@ -359,8 +365,14 @@ public class WindowsWGLGraphicsConfigurationFactory extends GLGraphicsConfigurat
             }
             pixelFormatCaps = availableCaps[chosenIndex];
             pfdID = pformats[chosenIndex];
+            if( null == pixelFormatCaps) {
+                throw new GLException("Null Capabilities with "+
+                                      " chosen pfdID: native recommended "+ (recommendedIndex+1) +
+                                      " chosen "+pfdID);
+            }
             if (DEBUG) {
-                System.err.println("!!! chosen pfdID "+pfdID+", idx " + chosenIndex + ", caps " + pixelFormatCaps);
+                System.err.println("!!! chosen pfdID (GDI): native recommended "+ (recommendedIndex+1) +
+                                   " chosen "+pfdID+", caps " + pixelFormatCaps);
             }
         }
         
diff --git a/src/nativewindow/classes/javax/media/nativewindow/DefaultGraphicsConfiguration.java b/src/nativewindow/classes/javax/media/nativewindow/DefaultGraphicsConfiguration.java
index 47110add9..3a18b3a2a 100644
--- a/src/nativewindow/classes/javax/media/nativewindow/DefaultGraphicsConfiguration.java
+++ b/src/nativewindow/classes/javax/media/nativewindow/DefaultGraphicsConfiguration.java
@@ -39,8 +39,16 @@ public class DefaultGraphicsConfiguration implements Cloneable, AbstractGraphics
 
     public DefaultGraphicsConfiguration(AbstractGraphicsScreen screen, 
                                         CapabilitiesImmutable capsChosen, CapabilitiesImmutable capsRequested) {
+        if(null == screen) {
+            throw new NativeWindowException("Null screen");
+        }
+        if(null == capsChosen) {
+            throw new NativeWindowException("Null chosen caps");
+        }
+        if(null == capsRequested) {
+            throw new NativeWindowException("Null requested caps");
+        }
         this.screen = screen;
-
         this.capabilitiesChosen = capsChosen;
         this.capabilitiesRequested = capsRequested;
     }
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/Surface2File.java b/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/Surface2File.java
index 6be732a63..3ad2c4213 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/Surface2File.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/Surface2File.java
@@ -72,7 +72,7 @@ public class Surface2File implements SurfaceUpdatedListener {
 
         File file = File.createTempFile(basename + shotNum + "-", ".ppm");
         TextureIO.write(readBufferUtil.getTextureData(), file);
-        System.out.println("Wrote: " + file.getAbsolutePath() + ", ...");
+        System.err.println("Wrote: " + file.getAbsolutePath() + ", ...");
         shotNum++;
         readBufferUtil.rewindPixelBuffer();
     }
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/TestOffscreen01NEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/TestOffscreen01GLPBufferNEWT.java
index 8851e4f7f..6a02bc03b 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/TestOffscreen01NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/TestOffscreen01GLPBufferNEWT.java
@@ -38,7 +38,6 @@ import com.jogamp.newt.event.WindowListener;
 import com.jogamp.newt.opengl.GLWindow;
 import org.junit.AfterClass;
 import org.junit.Assert;
-import org.junit.Assume;
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -50,7 +49,7 @@ import com.jogamp.opengl.test.junit.util.UITestCase;
 import com.jogamp.opengl.test.junit.jogl.demos.es1.RedSquare;
 import java.io.IOException;
 
-public class TestOffscreen01NEWT extends UITestCase {
+public class TestOffscreen01GLPBufferNEWT extends UITestCase {
     static GLProfile glpDefault;
     static GLDrawableFactory glDrawableFactory;
     static int width, height;
@@ -87,25 +86,14 @@ public class TestOffscreen01NEWT extends UITestCase {
         window.setSize(width, height);
         GLWindow glWindow = GLWindow.create(window);
         Assert.assertNotNull(glWindow);
-        try {
-            glWindow.setVisible(true);
-        } catch (Throwable t) {
-             // stop test and ignore if pixmap cannot be used
-            t.printStackTrace();
-            Assume.assumeNoException(t);
-        }
+        glWindow.setVisible(true);
+
         GLEventListener demo = new RedSquare();
         WindowUtilNEWT.setDemoFields(demo, window, glWindow, false);
         glWindow.addGLEventListener(demo);
 
         while ( glWindow.getTotalFrames() < 2) {
-            try {
-                glWindow.display();
-            } catch (Throwable t) {
-                 // stop test and ignore if pbuffer cannot be used
-                t.printStackTrace();
-                Assume.assumeNoException(t);
-            }
+            glWindow.display();
         }
 
         if(null!=glWindow) {
@@ -192,28 +180,17 @@ public class TestOffscreen01NEWT extends UITestCase {
             windows[i].setSize(width, height);
             glWindows[i] = GLWindow.create(windows[i]);
             Assert.assertNotNull(glWindows[i]);
-            try {
-                glWindows[i].setVisible(true);
-            } catch (Throwable t) {
-                 // stop test and ignore if pixmap cannot be used
-                t.printStackTrace();
-                Assume.assumeNoException(t);
-            }
+            glWindows[i].setVisible(true);
+
             demos[i] = new RedSquare();
             WindowUtilNEWT.setDemoFields(demos[i], windows[i], glWindows[i], false);
             glWindows[i].addGLEventListener(demos[i]);
         }
 
-        try {
-            while ( glWindows[0].getTotalFrames() < 2) {
-                for(i=0; i<winnum; i++) {
-                    glWindows[i].display();
-                }
+        while ( glWindows[0].getTotalFrames() < 2) {
+            for(i=0; i<winnum; i++) {
+                glWindows[i].display();
             }
-        } catch (Throwable t) {
-             // stop test and ignore if pbuffer cannot be used
-            t.printStackTrace();
-            Assume.assumeNoException(t);
         }
 
         for(i=0; i<winnum; i++) {
@@ -257,31 +234,18 @@ public class TestOffscreen01NEWT extends UITestCase {
             windows[i].setSize(width, height);
             glWindows[i] = GLWindow.create(windows[i]);
             Assert.assertNotNull(glWindows[i]);
-            try {
-                glWindows[i].setVisible(true);
-            } catch (Throwable t) {
-                 // stop test and ignore if pixmap cannot be used
-                t.printStackTrace();
-                Assume.assumeNoException(t);
-            }
+            glWindows[i].setVisible(true);
             demos[i] = new RedSquare();
             WindowUtilNEWT.setDemoFields(demos[i], windows[i], glWindows[i], false);
             glWindows[i].addGLEventListener(demos[i]);
         }
 
-        try {
-            while ( glWindows[0].getTotalFrames() < 2) {
-                for(i=0; i<winnum; i++) {
-                    glWindows[i].display();
-                }
+        while ( glWindows[0].getTotalFrames() < 2) {
+            for(i=0; i<winnum; i++) {
+                glWindows[i].display();
             }
-        } catch (Throwable t) {
-             // stop test and ignore if pbuffer cannot be used
-            t.printStackTrace();
-            Assume.assumeNoException(t);
         }
 
-
         for(i=0; i<winnum; i++) {
             if(null!=glWindows[i]) {
                 glWindows[i].destroy();
@@ -316,13 +280,7 @@ public class TestOffscreen01NEWT extends UITestCase {
         window.setSize(width, height);
         GLWindow glWindow = GLWindow.create(window);
         Assert.assertNotNull(glWindow);
-        try {
-            glWindow.setVisible(true);
-        } catch (Throwable t) {
-             // stop test and ignore if pixmap cannot be used
-            t.printStackTrace();
-            Assume.assumeNoException(t);
-        }
+        glWindow.setVisible(true);
 
         GLWindow windowOnScreen = null;
         WindowListener wl=null;
@@ -332,13 +290,7 @@ public class TestOffscreen01NEWT extends UITestCase {
         GLEventListener demo = new RedSquare();
         Assert.assertNotNull(demo);
 
-        try {
-            WindowUtilNEWT.run(glWindow, demo, windowOnScreen, wl, ml, ul, 2, true /*snapshot*/, false /*debug*/);
-        } catch (Throwable t) {
-             // stop test and ignore if pbuffer cannot be used
-            t.printStackTrace();
-            Assume.assumeNoException(t);
-        }
+        WindowUtilNEWT.run(glWindow, demo, windowOnScreen, wl, ml, ul, 2, true /*snapshot*/, false /*debug*/);
 
         if(null!=windowOnScreen) {
             windowOnScreen.destroy();
@@ -357,122 +309,8 @@ public class TestOffscreen01NEWT extends UITestCase {
         }
     }
 
-    @Test
-    public void test11OffscreenWindowPixmap() {
-        // Offscreen doesn't work on >= GL3 (ATI)
-        GLProfile glp = GLProfile.get(GLProfile.GL2);
-        Assert.assertNotNull(glp);
-        GLCapabilities caps = new GLCapabilities(glp);
-        Assert.assertNotNull(caps);
-
-        GLCapabilities caps2 = WindowUtilNEWT.fixCaps(caps, false, false, false);
-
-        Display display = NewtFactory.createDisplay(null); // local display
-        Assert.assertNotNull(display);
-        Screen screen  = NewtFactory.createScreen(display, 0); // screen 0
-        Assert.assertNotNull(screen);
-        Window window = NewtFactory.createWindow(screen, caps2);
-        Assert.assertNotNull(window);
-        window.setSize(width, height);
-        GLWindow glWindow = GLWindow.create(window);
-        Assert.assertNotNull(glWindow);
-        try {
-            glWindow.setVisible(true);
-        } catch (Throwable t) {
-             // stop test and ignore if pixmap cannot be used
-            t.printStackTrace();
-            Assume.assumeNoException(t);
-        }
-        GLEventListener demo = new RedSquare();
-        WindowUtilNEWT.setDemoFields(demo, window, glWindow, false);
-        glWindow.addGLEventListener(demo);
-
-        while ( glWindow.getTotalFrames() < 2) {
-            try {
-                glWindow.display();
-            } catch (Throwable t) {
-                 // stop test and ignore if pixmap cannot be used
-                t.printStackTrace();
-                Assume.assumeNoException(t);
-            }
-        }
-
-        if(null!=glWindow) {
-            glWindow.destroy();
-        }
-        if(null!=window) {
-            window.destroy();
-        }
-        if(null!=screen) {
-            screen.destroy();
-        }
-        if(null!=display) {
-            display.destroy();
-        }
-    }
-
-    @Test
-    public void test14OffscreenSnapshotWithDemoPixmap() {
-        // Offscreen doesn't work on >= GL3 (ATI)
-        GLProfile glp = GLProfile.get(GLProfile.GL2);
-        Assert.assertNotNull(glp);
-        GLCapabilities caps = new GLCapabilities(glp);
-        Assert.assertNotNull(caps);
-
-        GLCapabilities caps2 = WindowUtilNEWT.fixCaps(caps, false, false, false);
-
-        System.out.println("Create Window 1");
-        Display display = NewtFactory.createDisplay(null); // local display
-        Assert.assertNotNull(display);
-        Screen screen  = NewtFactory.createScreen(display, 0); // screen 0
-        Assert.assertNotNull(screen);
-        Window window = NewtFactory.createWindow(screen, caps2);
-        Assert.assertNotNull(window);
-        window.setSize(width, height);
-        GLWindow glWindow = GLWindow.create(window);
-        Assert.assertNotNull(glWindow);
-        try {
-            glWindow.setVisible(true);
-        } catch (Throwable t) {
-             // stop test and ignore if pixmap cannot be used
-            t.printStackTrace();
-            Assume.assumeNoException(t);
-        }
-
-        GLWindow windowOnScreen = null;
-        WindowListener wl=null;
-        MouseListener ml=null;
-        SurfaceUpdatedListener ul=null;
-
-        GLEventListener demo = new RedSquare();
-        Assert.assertNotNull(demo);
-
-        try {
-            WindowUtilNEWT.run(glWindow, demo, windowOnScreen, wl, ml, ul, 2, true /*snapshot*/, false /*debug*/);
-        } catch (Throwable t) {
-             // stop test and ignore if pixmap cannot be used
-            t.printStackTrace();
-            Assume.assumeNoException(t);
-        }
-
-        if(null!=windowOnScreen) {
-            windowOnScreen.destroy();
-        }
-        if(null!=glWindow) {
-            glWindow.destroy();
-        }
-        if(null!=window) {
-            window.destroy();
-        }
-        if(null!=screen) {
-            screen.destroy();
-        }
-        if(null!=display) {
-            display.destroy();
-        }
-    }
     public static void main(String args[]) throws IOException {
-        String tstname = TestOffscreen01NEWT.class.getName();
+        String tstname = TestOffscreen01GLPBufferNEWT.class.getName();
         org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(new String[] {
             tstname,
             "filtertrace=true",
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/TestOffscreen02BitmapNEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/TestOffscreen02BitmapNEWT.java
new file mode 100644
index 000000000..d92b4ffbf
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/TestOffscreen02BitmapNEWT.java
@@ -0,0 +1,184 @@
+/**
+ * Copyright 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:
+ * 
+ *    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.opengl.test.junit.jogl.offscreen;
+
+
+import com.jogamp.newt.Display;
+import com.jogamp.newt.NewtFactory;
+import com.jogamp.newt.Screen;
+import com.jogamp.newt.Window;
+import com.jogamp.newt.event.MouseListener;
+import com.jogamp.newt.event.WindowListener;
+import com.jogamp.newt.opengl.GLWindow;
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import javax.media.opengl.*;
+import javax.media.nativewindow.*;
+
+import com.jogamp.opengl.test.junit.util.UITestCase;
+import com.jogamp.opengl.test.junit.jogl.demos.es1.RedSquare;
+import java.io.IOException;
+
+public class TestOffscreen02BitmapNEWT extends UITestCase {
+    static GLProfile glpDefault;
+    static GLDrawableFactory glDrawableFactory;
+    static int width, height;
+    GLCapabilities capsDefault;
+
+    @BeforeClass
+    public static void initClass() {
+        GLProfile.initSingleton(true);
+        glpDefault = GLProfile.getDefault();
+        Assert.assertNotNull(glpDefault);
+        glDrawableFactory = GLDrawableFactory.getFactory(glpDefault);
+        System.out.println("INFO: PBuffer supported: "+ glDrawableFactory.canCreateGLPbuffer(null));
+        width  = 640;
+        height = 480;
+    }
+
+    @AfterClass
+    public static void releaseClass() {
+    }
+
+    @Before
+    public void init() {
+        capsDefault = new GLCapabilities(glpDefault);
+        Assert.assertNotNull(capsDefault);
+    }
+
+    @Test
+    public void test11OffscreenWindowPixmap() {
+        // Offscreen doesn't work on >= GL3 (ATI)
+        GLProfile glp = GLProfile.get(GLProfile.GL2);
+        Assert.assertNotNull(glp);
+        GLCapabilities caps = new GLCapabilities(glp);
+        Assert.assertNotNull(caps);
+
+        GLCapabilities caps2 = WindowUtilNEWT.fixCaps(caps, false, false, false);
+
+        Display display = NewtFactory.createDisplay(null); // local display
+        Assert.assertNotNull(display);
+        Screen screen  = NewtFactory.createScreen(display, 0); // screen 0
+        Assert.assertNotNull(screen);
+        Window window = NewtFactory.createWindow(screen, caps2);
+        Assert.assertNotNull(window);
+        window.setSize(width, height);
+        GLWindow glWindow = GLWindow.create(window);
+        Assert.assertNotNull(glWindow);
+        glWindow.setVisible(true);
+
+        GLEventListener demo = new RedSquare();
+        WindowUtilNEWT.setDemoFields(demo, window, glWindow, false);
+        glWindow.addGLEventListener(demo);
+
+        while ( glWindow.getTotalFrames() < 2) {
+            glWindow.display();
+        }
+
+        if(null!=glWindow) {
+            glWindow.destroy();
+        }
+        if(null!=window) {
+            window.destroy();
+        }
+        if(null!=screen) {
+            screen.destroy();
+        }
+        if(null!=display) {
+            display.destroy();
+        }
+    }
+
+    @Test
+    public void test14OffscreenSnapshotWithDemoPixmap() {
+        // Offscreen doesn't work on >= GL3 (ATI)
+        GLProfile glp = GLProfile.get(GLProfile.GL2);
+        Assert.assertNotNull(glp);
+        GLCapabilities caps = new GLCapabilities(glp);
+        Assert.assertNotNull(caps);
+
+        GLCapabilities caps2 = WindowUtilNEWT.fixCaps(caps, false, false, false);
+
+        Display display = NewtFactory.createDisplay(null); // local display
+        Assert.assertNotNull(display);
+        Screen screen  = NewtFactory.createScreen(display, 0); // screen 0
+        Assert.assertNotNull(screen);
+        Window window = NewtFactory.createWindow(screen, caps2);
+        Assert.assertNotNull(window);
+        window.setSize(width, height);
+        GLWindow glWindow = GLWindow.create(window);
+        Assert.assertNotNull(glWindow);
+        glWindow.setVisible(true);
+
+        GLWindow windowOnScreen = null;
+        WindowListener wl=null;
+        MouseListener ml=null;
+        SurfaceUpdatedListener ul=null;
+
+        GLEventListener demo = new RedSquare();
+        Assert.assertNotNull(demo);
+
+        WindowUtilNEWT.run(glWindow, demo, windowOnScreen, wl, ml, ul, 2, true /*snapshot*/, false /*debug*/);
+
+        if(null!=windowOnScreen) {
+            windowOnScreen.destroy();
+        }
+        if(null!=glWindow) {
+            glWindow.destroy();
+        }
+        if(null!=window) {
+            window.destroy();
+        }
+        if(null!=screen) {
+            screen.destroy();
+        }
+        if(null!=display) {
+            display.destroy();
+        }
+    }
+    public static void main(String args[]) throws IOException {
+        String tstname = TestOffscreen02BitmapNEWT.class.getName();
+        org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(new String[] {
+            tstname,
+            "filtertrace=true",
+            "haltOnError=false",
+            "haltOnFailure=false",
+            "showoutput=true",
+            "outputtoformatters=true",
+            "logfailedtests=true",
+            "logtestlistenerevents=true",
+            "formatter=org.apache.tools.ant.taskdefs.optional.junit.PlainJUnitResultFormatter",
+            "formatter=org.apache.tools.ant.taskdefs.optional.junit.XMLJUnitResultFormatter,TEST-"+tstname+".xml" } );
+    }
+
+}
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/WindowUtilNEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/WindowUtilNEWT.java
index ba9896d4b..4420a5107 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/WindowUtilNEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/WindowUtilNEWT.java
@@ -95,9 +95,9 @@ public class WindowUtilNEWT {
         }
 
         if(debug) {
-            System.out.println("+++++++++++++++++++++++++++");
-            System.out.println(windowOffScreen);
-            System.out.println("+++++++++++++++++++++++++++");
+            System.err.println("+++++++++++++++++++++++++++");
+            System.err.println(windowOffScreen);
+            System.err.println("+++++++++++++++++++++++++++");
         }
 
         while ( windowOffScreen.getTotalFrames() < frames) {