BlendInspect

[emzic]

hello,

i have written a small tool that visualizes the behaviour of the opengl blendmodes.
since it is maybe useful for some of you guys, i packed it in a jar and made it webstartable

you can webstart it here: http://www.embege.com/blendinspect/

any feedback is welcome! (even if it is completely senseless, tell me )
i would especially be happy to know if it runs on a mac, since that is the only platform i couldnt test it. thanks!

[quintesse]

Doesn't seem to work right on Linux (Fedora 7, JDK 1.6.0_01), I just get this tiny window which I can't resize. No errors in the console.

[emzic]

thank you very much for the information. do other jogl-webstart applications work for you?

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[lhkbob]

I didn't work with my Mac Powerbook Pro, it had an java.lang.Exception in the Launcher class.  I'm nor sure what's wrong since I'm not a very big webstart guy, however I haven't tweaked with any java or webstart settings, so there shouldn't be anything that I've done to make my problem unique to my box.  Anyway, best of luck.

[emzic]

thanks for the information. do other jogl-webstart application like the jogl-demos work for you?
thanks!

[lhkbob]

Most of the jogl-demos work if I recall as well as the jME demos, so I know webstart is capable of working on my computer.

[emzic]

thanks! hmmm, that's strange. does anyone know what could be wrong with this jnlp file?

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<?xml version="1.0" encoding="UTF-8"?> <jnlp spec="1.0+" codebase="http://www.embege.com/blendinspect/" href="blendinspect.jnlp"> <information>   <title>BlendInspect</title>   <vendor>Matthias Grumet</vendor>   <homepage href="http://www.embege.com" />   <description>BlendInspect - OpenGL BlendMode inspection</description>   <offline-allowed/> </information> <security>    <all-permissions/> </security> <resources>       <j2se href="http://java.sun.com/products/autodl/j2se" version="1.5+"/>       <jar href="BlendInspect.jar" />       <extension name="jogl" href="http://download.java.net/media/jogl/builds/archive/jsr-231-webstart-current/jogl.jnlp" /> </resources> <application-desc main-class="com.embege.blendinspect.BlendInspect"/> </jnlp>

[lhkbob]

This is the exact exception I get if it helps you any:
java.lang.Exception
   at com.sun.javaws.Launcher.continueLaunch(Launcher.java:898)
   at com.sun.javaws.Launcher.handleApplicationDesc(Launcher.java:522)
   at com.sun.javaws.Launcher.handleLaunchFile(Launcher.java:218)
   at com.sun.javaws.Launcher.run(Launcher.java:165)
   at java.lang.Thread.run(Thread.java:613)

[Ken Russell]

Worked great on Windows XP SP2 with the latest Java (actually, a Java 7 development build).

[emzic]

lhkbob, thanks very much for the information.
i will need to look into this further. maybe it is a java-version problem, since i have only tested it with java6.

meanwhile, i am happy about any other feedback.

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[flipperke]

I have the same problem (tiny window) when I open it the first time. When I try to open it a second time (while the tiny window is stil open, it works like it should.
Linux
JDK1.6.0

[emzic]

thanks a lot for the information! with tiny window you mean the java-webstart splash screen?

[flipperke]

No, just a smal  (3 mm by 10mm approx).
To be more precise, it seems to start at normal size (just a split-second), an then it goes to mini.

[emzic]

hm, interesting. though yet i have no idea what the problem could be.

[quintesse]

Show us the code and we might be able to help 

[emzic]

the problem is, that the exception occurs in code which is not mine. (see lhkbob's post above)
it happens somewhere in the java-webstart launcher code.

so i could actually post the complete code, which is quite a number of java-files, but i dont think that would help.

[Ken Russell]

The exception lhkbob isn't enough to make a diagnosis. There's another tab in the window which pops up like "wrapped exception" or similar which should have the real root cause.

[emzic]

ah thanks! i didnt realize that.

maybe someone (lhkbob? ) can post that exception too, so that we can further investigate the issue.

thanks a lot!

[lhkbob]

I peaked into it further (there was no wrapped exception tab, but I remembered to check the actual console) and it's a java.lang.UnsupportedClassVersionError.  So if I'm not mistaken, that's probably because I have java 1.5.  So, sorry for leading you on, and it works fine for windows machine.

[emzic]

ah, ok
i was building it with 1.6 so maybe that's the problem.

edit: ok i am using ant for my deployment. does anyone know how to configure it to build it with 1.5 compliance. is that a compiler flag?

thanks!

[Ken Russell]

Specify the -target 1.5 argument in your javac task.

[emzic]

sorry for the delay, i was very busy at work.

but now i have updated BlendInspect! it is compiled with source 1.5 target and it also features a small particle system to make it easier to find the correct blendmode for your game's particlesystem!

i would be very happy if you guys (especially those with a mac) could give it a try again and provide a little feedback, if it worked or not. thanks a lot!

website: http://www.embege.com/blendinspect/

webstart: http://www.embege.com/blendinspect/blendinspect.jnlp

[broumbroum]

got bad version in class file :

----------------------------------------------------
java.lang.UnsupportedClassVersionError: Bad version number in .class file
   at java.lang.ClassLoader.defineClass1(Native Method)
   at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
   at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
   at com.sun.jnlp.JNLPClassLoader.defineClass(JNLPClassLoader.java:314)
   at com.sun.jnlp.JNLPClassLoader.access$100(JNLPClassLoader.java:53)
   at com.sun.jnlp.JNLPClassLoader$1.run(JNLPClassLoader.java:254)
   at java.security.AccessController.doPrivileged(Native Method)
   at com.sun.jnlp.JNLPClassLoader.findClass(JNLPClassLoader.java:247)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
   at com.sun.jnlp.JNLPClassLoader.loadClass(JNLPClassLoader.java:600)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
   at com.sun.javaws.Launcher.continueLaunch(Launcher.java:884)
   at com.sun.javaws.Launcher.handleApplicationDesc(Launcher.java:522)
   at com.sun.javaws.Launcher.handleLaunchFile(Launcher.java:218)
   at com.sun.javaws.Launcher.run(Launcher.java:165)
   at java.lang.Thread.run(Thread.java:613)
#### Java Web Start Error:
#### null

[emzic]

damned not again!

thank you very much for the feedback.
can i ask you what OS and what JRE-version you have?
thanks!

edit: i also obfuscate the jar using proguard, could that be the problem?
from the proguard docs: "By default, the version numbers of the class files are left unchanged. "

[broumbroum]

it is Mac OS X and J2SE 1.5 running...

[emzic]

thanks for the information.
anyone got an idea what the problem could be? i am pretty sure i compiled the sources with target 5 and also proguard shouldnt change that.

[lhkbob]

If you're using Eclipse and 1.5 jdk, try switching the project over to that and rebuilding everything instead of specifying a target option.

[emzic]

ok thank you! i have uploaded a new version of the jar. could you try again?

thank you very much!

[lhkbob]

I have good news and bad news.
Bad news it still doesn't work correctly,
Good news is it no longer crashes, I get the BlendInspect window to pop up on my Mac, but there's only a small black bar at the top of the window.  It still runs fine on my windows machine, so I'm sure where it broke.

[emzic]

thank you very much for the information, and the helpful tips with the java-class-version thing, lhkbob.

but now i have again no idea what the problem with this black bar could be. anyone? thanks a lot!