Re: [xmlvm-users] NeHeLesson4

[Arno P. <ar...@pu...>]

it seems the GL emulation is broken in XMLVM's Java emulator. I just 
tried the native (i.e., cross-compiled) version of NeHeLesson4 and that 
works perfectly fine.

Note that while it is convenient to have a Java emulator, it is a lot of 
work to maintain. We rather focus on the cross-compilation and not 
mimicking iOS API on a desktop Java.

Arno


On 1/27/11 7:11 PM, Jeremiah Blanchard wrote:
> Hi there,
>
> I've been trying to run the NeHeLesson4 OpenGL example but I keep
> running into exceptions. From Eclipse or the command line, I get the
> following output, exception, and stack trace:
>
> View: 320.0,480.0
> Exception in thread "Thread-6" java.lang.NullPointerException
>          at org.lwjgl.opengl.GL11.glViewport(GL11.java:3199)
>          at org.xmlvm.iphone.gl.GL.glViewport(GL.java:625)
>          at
> org.xmlvm.iphone.demo.gl.nehelesson4.GLView.setupView(GLView.java:133)
>          at
> org.xmlvm.iphone.demo.gl.nehelesson4.GLView.drawView(GLView.java:155)
>          at
> org.xmlvm.iphone.demo.gl.nehelesson4.GLView$1.timerEvent(GLView.java:112)
>          at org.xmlvm.iphone.NSTimer.timerTick(NSTimer.java:81)
>          at org.xmlvm.iphone.NSTimer.access$1(NSTimer.java:80)
>          at org.xmlvm.iphone.NSTimer$1.run(NSTimer.java:52)
>
> Now, I did fix what appeared to be an error that prevented "setupView"
> from being called, but even without it, I get very similar results:
>
> View: 320.0,480.0
> Exception in thread "Thread-6" java.lang.NullPointerException
>          at org.lwjgl.opengl.GL11.glClear(GL11.java:586)
>          at org.xmlvm.iphone.gl.GL.glClear(GL.java:594)
>          at
> org.xmlvm.iphone.demo.gl.nehelesson4.GLView.drawView(GLView.java:161)
>          at
> org.xmlvm.iphone.demo.gl.nehelesson4.GLView$1.timerEvent(GLView.java:112)
>          at org.xmlvm.iphone.NSTimer.timerTick(NSTimer.java:81)
>          at org.xmlvm.iphone.NSTimer.access$1(NSTimer.java:80)
>          at org.xmlvm.iphone.NSTimer$1.run(NSTimer.java:52)
>
> I've tried tracking down the problem but I'm not having any luck. Anyone
> know how I can get this working? I'm in the process of porting some of
> my code over to the iPhone but this has become a roadblock for me.
>
> Thanks in advance!
>
> -Jeremiah
>
>
>
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