Hi Bradley, You can try to press Ctrl-Break and see where it hangs from the stack trace. It would be great if you can send us a complete test program to investigate.
A possible workaround maybe calling waitForOffScreenRendering() inside a Behavior thread instead of user thread. Thanks. - Kelvin ------------------ Java 3D Team Sun Microsystems Inc. >Delivered-To: [EMAIL PROTECTED] >X-Sender: [EMAIL PROTECTED] >Mime-Version: 1.0 >Date: Thu, 14 Feb 2002 09:54:36 +1100 >From: Bradley White <[EMAIL PROTECTED]> >Subject: [JAVA3D] waitForOffScreenRendering goes CPU hog >Comments: cc: [EMAIL PROTECTED] >To: [EMAIL PROTECTED] > >I have the following Branch group for the View Platform side of the >scene graph: > > >VP ------------ Viewa ----------- Canvas3Da >| >| >Viewb ---------- Canvas3Db >| >| >Canvas3Dc (Off screen canvas) > >The Canvas3Da node and its View node represents an alternative view >of the 3D world is created thus: > > // Create a second view on the second canvas, attach it to > // the viewing platform > View viewb = new View(); > viewb.setWindowResizePolicy( View.VIRTUAL_WORLD ); > View view0 = canvas3Db.getView(); > viewb.setPhysicalBody( view0.getPhysicalBody() ); > viewb.setPhysicalEnvironment( view0.getPhysicalEnvironment() ); > viewb.attachViewPlatform( canvas3Db.getViewPlatform() ); > viewb.addCanvas3D( canvas3Da ); > >The Canvas3Db is the "main" view of the world and Canvas3Dc is an >off screen canvas to support screen capture. > >The Canvas3Dc is attached to the Canvas3Db View with: > > canvas3Db.getView().addCanvas3D(canvas3Dc); > >I am attempting to capture a snapshot of the canvas3Db using the off screen >canvas, canvas3Dc, with : > > BufferedImage image = new >BufferedImage(width,height,BufferedImage.TYPE_INT_ARGB); > ImageComponent2D buffer = new >ImageComponent2D(ImageComponent.FORMAT_RGBA, image); > buffer.setCapability(ImageComponent2D.ALLOW_IMAGE_READ); > > canvas3Dc.setOffScreenBuffer(buffer); > canvas3Dc.renderOffScreenBuffer(); > > canvas3Dc.waitForOffScreenRendering(); <-- At this point my >program goes CPU hog and never returns. > >Can any one see any problems in what I'm trying to do? > >Brad. > >=========================================================================== >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".
