Fix bug 463 where gluScaleImage consumes all memory

Changes the Type_Widget.java constructor to allocate a normal
buffer instead of a direct buffer. Apparently JVMs can't
allocate small direct buffers efficiently, and since Type_Widget
is called inside tight loops millions of times, we can't afford
to do it this way. This commit restores it to how it was in JOGL 1.

2 files changed, 117 insertions, 1 deletions

diff --git a/src/jogl/classes/com/jogamp/opengl/impl/glu/mipmap/Type_Widget.java b/src/jogl/classes/com/jogamp/opengl/impl/glu/mipmap/Type_Widget.java
index b329840ef..0aeca8f1c 100644
--- a/src/jogl/classes/com/jogamp/opengl/impl/glu/mipmap/Type_Widget.java
+++ b/src/jogl/classes/com/jogamp/opengl/impl/glu/mipmap/Type_Widget.java
@@ -56,7 +56,9 @@ public class Type_Widget {
   
   /** Creates a new instance of Type_Widget */
   public Type_Widget() {
-    buffer = ByteBuffer.allocateDirect( 4 );
+    // can't make this direct, because JVM doesn't allocate small direct buffers efficiently
+    // see https://jogamp.org/bugzilla/show_bug.cgi?id=463 for details
+    buffer = ByteBuffer.allocate( 4 );
   }
   
   public void setUB0( byte b ) {
diff --git a/src/test/com/jogamp/opengl/test/junit/glu/TestBug463ScaleImageMemoryAWT.java b/src/test/com/jogamp/opengl/test/junit/glu/TestBug463ScaleImageMemoryAWT.java
new file mode 100644
index 000000000..b523269bb
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/glu/TestBug463ScaleImageMemoryAWT.java
@@ -0,0 +1,114 @@
+/**
+ * Copyright 2011 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.glu;
+
+import java.awt.Frame;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.nio.ByteBuffer;
+
+import javax.media.opengl.GL;
+import javax.media.opengl.GLAutoDrawable;
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLEventListener;
+import javax.media.opengl.GLProfile;
+import javax.media.opengl.awt.GLCanvas;
+import javax.media.opengl.glu.gl2.GLUgl2;
+
+import org.junit.Test;
+
+/**
+ * Tests for bug 463, where gluScaleImage uses up all system memory. This was due to creating millions of
+ * 4-byte direct buffer objects inside the tight loops of Image.fill_image() and Image.empty_image(). Since
+ * the JVM apparently can only allocate direct buffer in 4MB chunks, each 4-byte buffer cost us a million times
+ * the memory it should have. Changing the constructor of Type_Widget.java back to non-direct buffer (like it
+ * was in JOGL 1) solves the problem.  
+ * @author Wade Walker
+ */
+public class TestBug463ScaleImageMemoryAWT implements GLEventListener {
+
+    @Override
+    public void init(GLAutoDrawable drawable) {
+    }
+
+    @Override
+    public void display(GLAutoDrawable drawable) {
+        int widthin = 559;
+        int heightin = 425;
+        
+        int widthout = 1024;
+        int heightout = 512;
+        
+        int textureInLength = widthin * heightin * 4;
+        int textureOutLength = widthout * heightout * 4;
+        
+        byte[] datain = new byte[textureInLength];
+        byte[] dataout = new byte[textureOutLength];
+        
+        ByteBuffer bufferIn  = ByteBuffer.wrap(datain);
+        ByteBuffer bufferOut = ByteBuffer.wrap(dataout);      
+        GLUgl2 glu = new GLUgl2();
+        // in the failing case, the system would run out of memory in here
+        glu.gluScaleImage( GL.GL_RGBA,
+                           widthin, heightin, GL.GL_UNSIGNED_BYTE, bufferIn,
+                           widthout, heightout, GL.GL_UNSIGNED_BYTE, bufferOut );
+    }
+
+    @Override
+    public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
+    }
+
+
+    @Override
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
+    @Test
+    public void test01() {
+        Frame frame = new Frame("Test");
+        GLProfile glprofile = GLProfile.getDefault();
+        GLCapabilities glCapabilities = new GLCapabilities(glprofile);
+        final GLCanvas canvas = new GLCanvas(glCapabilities);
+        frame.setSize(256, 256);
+        frame.add(canvas);
+        frame.setVisible( true );
+        canvas.addGLEventListener( this );
+
+        frame.addWindowListener(new WindowAdapter() {
+            public void windowClosing( WindowEvent e ) {
+                System.exit(0);
+            }
+        });
+        canvas.display();
+   }
+
+    public static void main(String args[]) {
+        org.junit.runner.JUnitCore.main(TestBug463ScaleImageMemoryAWT.class.getName());
+    }
+}