Hi Alan,
Thanks for your test program. We're able to reproduce the problem
and bug 4748837 - Memory leak when new texture is set in Appearance
is filed.
A workaround is to set new Appearance whenever new Texture
is assigned. (see attachment). This should be fix by next release.
- Kelvin
----------------
Java 3D Team
Sun Microsystems Inc.
Alan Hudson wrote:
> I've run into a memory leak in Xj3D related to texture loading. I'm
> changing one Appearance with a new texture and the system eventually
> runs out of memory. I've replicated this behavior using the stock
> TextureImage.java programs attached.
>
> Any thoughts on this?
> --
> Alan Hudson
> President: Yumetech, Inc. http://www.yumetech.com/
> Web3D Open Source Chair http://www.web3d.org/TaskGroups/source/
>
/*
* @(#)TextureImage.java 1.25 02/04/01 15:03:12
*
* Copyright (c) 1996-2002 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions 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 AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES
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* You acknowledge that Software is not designed,licensed or intended
* for use in the design, construction, operation or maintenance of
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*/
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.image.TextureLoader;
import com.sun.j3d.utils.geometry.Box;
import javax.media.j3d.*;
import javax.vecmath.*;
public class TextureImage extends Applet {
private java.net.URL texImage = null;
private SimpleUniverse u = null;
private Appearance app;
private TextureAttributes texAttr;
private Box textureCube;
boolean initDone = false;
public BranchGroup createSceneGraph() {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
// Create the transform group node and initialize it to the
// identity. Enable the TRANSFORM_WRITE capability so that
// our behavior code can modify it at runtime. Add it to the
// root of the subgraph.
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRoot.addChild(objTrans);
// Create appearance object for textured cube
app = new Appearance();
app.setCapability(Appearance.ALLOW_TEXTURE_WRITE);
Texture tex = new TextureLoader(texImage, this).getTexture();
app.setTexture(tex);
texAttr = new TextureAttributes();
texAttr.setTextureMode(TextureAttributes.MODULATE);
app.setTextureAttributes(texAttr);
// Create textured cube and add it to the scene graph.
textureCube = new Box(0.4f, 0.4f, 0.4f,
Box.GENERATE_TEXTURE_COORDS|Box.ENABLE_APPEARANCE_MODIFY, app);
objTrans.addChild(textureCube);
// Create a new Behavior object that will perform the desired
// operation on the specified transform object and add it into
// the scene graph.
Transform3D yAxis = new Transform3D();
Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
0, 0,
4000, 0, 0,
0, 0, 0);
RotationInterpolator rotator =
new RotationInterpolator(rotationAlpha, objTrans, yAxis,
0.0f, (float) Math.PI*2.0f);
BoundingSphere bounds =
new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
rotator.setSchedulingBounds(bounds);
objTrans.addChild(rotator);
// Have Java 3D perform optimizations on this scene graph.
objRoot.compile();
return objRoot;
}
public TextureImage() {
}
public TextureImage(java.net.URL url) {
texImage = url;
}
public void init() {
if (texImage == null) {
// the path to the image for an applet
try {
texImage = new java.net.URL(getCodeBase().toString() +
"../images/stone.jpg");
}
catch (java.net.MalformedURLException ex) {
System.out.println(ex.getMessage());
System.exit(1);
}
}
setLayout(new BorderLayout());
GraphicsConfiguration config =
SimpleUniverse.getPreferredConfiguration();
Canvas3D c = new Canvas3D(config);
add("Center", c);
// Create a simple scene and attach it to the virtual universe
BranchGroup scene = createSceneGraph();
u = new SimpleUniverse(c);
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
u.getViewingPlatform().setNominalViewingTransform();
u.addBranchGraph(scene);
initDone = true;
}
public void destroy() {
u.removeAllLocales();
}
public void loadTex() {
Texture tex = new TextureLoader(texImage, this).getTexture();
/* This can also reproduce the bug instead of
loading image every time.
Texture newTex = (Texture) tex.cloneNodeComponent();
newTex.duplicateNodeComponent(tex, true);
app.setTexture(newTex);
*/
app = new Appearance();
app.setTexture(tex);
app.setTextureAttributes(texAttr);
textureCube.setAppearance(app);
}
//
// The following allows TextureImage to be run as an application
// as well as an applet
//
public static void main(String[] args) {
java.net.URL url = null;
if (args.length > 0) {
try {
url = new java.net.URL("file:" + args[0]);
}
catch (java.net.MalformedURLException ex) {
System.out.println(ex.getMessage());
System.exit(1);
}
}
else {
// the path to the image for an application
try {
url = new java.net.URL("file:../images/stone.jpg");
}
catch (java.net.MalformedURLException ex) {
System.out.println(ex.getMessage());
System.exit(1);
}
}
TextureImage t = new TextureImage(url);
new MainFrame(t, 256, 256);
while (!t.initDone) {
try {
Thread.sleep(1000);
} catch(Exception e) {}
}
for(int i=0; i < 1000; i++) {
System.out.println("Loading tex: " + i);
t.loadTex();
try { Thread.sleep(50);
} catch(Exception e) {}
}
}
}
