Hi John, This is bug 4701430 - Infrequent NPE at RenderBin.java:544
which has a workaround in the upcoming v1.3 release. - Kelvin ---------------- Java 3D Team Sun Microsystems Inc. >Date: Thu, 27 Jun 2002 09:43:41 -0700 >From: John Barrus <[EMAIL PROTECTED]> >Subject: [JAVA3D] Problems with off-screen rendering >To: [EMAIL PROTECTED] >MIME-version: 1.0 >X-MIMEOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 >Content-transfer-encoding: 7bit >Importance: Normal >X-Priority: 3 (Normal) >X-MSMail-priority: Normal >Delivered-to: [EMAIL PROTECTED] > >I have an application that renders to an image offscreen and then combines >the rendered image with a photograph. Unfortunately, there are times when >the render thread dies and I get the following error: > >java.lang.NullPointerException > at javax.media.j3d.RenderBin.updateObject (RenderBin.java:544) > at javax.media.j3d.MasterControl.updateMirrorObjects >(MasterControl.java:2633) > at javax.media.j3d.MasterControl.runMonitor >(MasterControl.java:3321) > at javax.media.j3d.MasterControl.doWork (MasterControl.java:2890) > at javax.media.j3d.MasterControlThread.run >(MasterControlThread.java:28) > > >From then on, I cannot render any more. I get the following >error every time I try to render the image again: > >javax.media.j3d.RestrictedAccessException: Canvas3D: Off- >screening rendering is in progress > at javax.media.j3d.Canvas3D.renderOffScreenBuffer >(Canvas3D.java:1868) > at app.MeshRenderer.getImage(MeshRenderer.java:716) > at app.PerspectiveGrid$ImageThread.run (PerspectiveGrid.java:805) > > >I figured out how to detect the error, but I can't figure out how to restart >the renderer. I get an error when I try to apply stopRenderer() or >startRenderer() to the Canvas3D. > >Any suggestions? > >I filed a bug report with Sun. > >John Barrus > >=========================================================================== >To unsubscribe, send email to [EMAIL PROTECTED] and include in the body >of the message "signoff JAVA3D-INTEREST". For general help, send email to >[EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
