Windows seems to be very tolerant of errors (probably why it crashes so much). From the additional information you are providing it would appear that the code is unable to get an acceptable graphics configuration on your Linux system. (i.e. you'll probably have to fix whatever is wrong on your video setup on Linux)
Does it just give an error or does it actually fail to run on Linux? - John Wright Starfire Research cs wrote: > John Wright,您好！ > > In fact firstly I set Canvas3D as follows: > c = new Canvas3D(null); > and then I changed it to: > c = new Canvas3D(SimpleUniverse.getPreferredConfiguration()); > but it error message is not eliminated:( > after read you mail I changed it to: > GraphicsDevice dev = > GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice(); > GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D(); > GraphicsConfiguration config = > > GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getBestConfiguration(template); > c = new Canvas3D(config); > Unfortunately the error message exists yet! > > you said it is none of linux's business, but why the three above can all run > correctly in windows system? > > > ======= 2005-04-09 06:12:00 您在来信中写道：======= > > >>The "Canvas3D constructed with a null GraphicsConfiguration" is a common >>"error" that many tolerate as not an issue. It occurs when you create >>your Canvas3D using: >> new Canvas3D(); >> >>If you use: >> GraphicsDevice dev = >>GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice(); >> GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D(); >> GraphicsConfiguration config = >>GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getBestConfiguration(template); >> canvas3d = new Canvas3D(config); >> >>you shouldn't have this issue. (this has nothing to do with Linux) >> >>- John Wright >>Starfire Research >> >>cs wrote: >> >>>Hi,all. My system is linux(redhat 9), j2sdk1.4.2_05, >>>java3d-1_3_2-linux-i586, and Video card is NVIDIA GeForece 2 GTS >>>(generic). when I run any simple j3d application or applet(demo in >>>java3d), it gives me the error message as following: >>>************************************************************************ >>> *** ERROR: Canvas3D constructed with a null GraphicsConfiguration >>>*** This will cause a NullPointerException in a subsequent release >>>************************************************************************ >>> java.lang.NullPointerException: Canvas3D: null GraphicsConfiguration >>> at javax.media.j3d.Canvas3D.<init>(Unknown Source) at >>>javax.media.j3d.Canvas3D.<init>(Unknown Source) at >>>MyBoxTest1.init(MyBoxTest1.java:45) at >>>com.sun.j3d.utils.applet.MainFrame.run(Unknown Source) at >>>java.lang.Thread.run(Thread.java:534) >>> >>>The same java3d application or applet can run in Windows system. And >>>java applet can run in linux system. I find that the color of the >>>checking box "3D Accelerate" is gray in the display information of my >>>linux system, and I cannot check it. I change to another card(ATI >>>Radeon 9000) and it comes to the same wrong message. So that wrong is >>>related to this? That means i should install the new driver for the >>>NVIDIA card? I'm a newbie in linux. anyone met this case? >>> >>>Thanks, >>> >>>Martin =========================================================================== 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".
