java.lang.ArrayIndexOutOfBoundsException: 0 on loadPixels()

clankill3r

If i use loadPixels() in setup it's fine. If i use it in draw i get a IndexOutOfBoundsException: 0. Am i doing something wrong?

PImage img;

void setup() {
  img = loadImage("test_02.png");
  size(img.width, img.height, OPENGL);
  // here it's fine
  img.loadPixels();

}


void draw() {
 image(img, 0, 0); 

 // here index out of bounds
 //img.loadPixels();

 text(frameRate, 20, 20);
}

koogs

yes.

move loadImage() after size() - the data paths don't get initialized until size() is called

size() should be the first thing in setup().

Chrisir

I always recommend to use

loadImage after size (since without size processing doesn't know the path)

maybe that has an impact on loadPixels ?

Chrisir

I am too late...

then you need to put the values for size in manually from the image

clankill3r

I used it like that so many times and it always worked. Anyway, i moved it after size but i still have the problem.

PImage img;

void setup() {
  size(1500, 750, OPENGL);
  img = loadImage("test_02.png");
  //size(img.width, img.height, OPENGL);
  // here it's fine
  img.loadPixels();

}


void draw() {
 image(img, 0, 0); 

 // here index out of bounds
 img.loadPixels();

 text(frameRate, 20, 20);
}

Here the image:

GoToLoop

It's working fine for me @ Processing 2.0.2 w/ 64-bit OpenJDK 7.51 in Lubuntu 13.04!

Chrisir

hmm...

probably it's no good to do it 60 times per second anyway...

you should load it only when it changes

maybe set your memory higher in the preferences?

GoToLoop

Mine is set to 1024 MiB btW! o->

clankill3r

Mine is set to 2048. If i set the framerate to 1 i still have the problem. I also made a small image of 512x256 but still the error. I'm on processing 2.1.2 on max os x 10.9.2.

Here is the complete log:

java.lang.RuntimeException: java.lang.ArrayIndexOutOfBoundsException: 0
    at com.jogamp.common.util.awt.AWTEDTExecutor.invoke(AWTEDTExecutor.java:58)
    at jogamp.opengl.awt.AWTThreadingPlugin.invokeOnOpenGLThread(AWTThreadingPlugin.java:103)
    at jogamp.opengl.ThreadingImpl.invokeOnOpenGLThread(ThreadingImpl.java:206)
    at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:172)
    at javax.media.opengl.Threading.invoke(Threading.java:191)
    at javax.media.opengl.awt.GLCanvas.display(GLCanvas.java:541)
    at processing.opengl.PJOGL.requestDraw(PJOGL.java:688)
    at processing.opengl.PGraphicsOpenGL.requestDraw(PGraphicsOpenGL.java:1651)
    at processing.core.PApplet.run(PApplet.java:2254)
    at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
    at processing.opengl.Texture.convertToRGBA(Texture.java:1078)
    at processing.opengl.Texture.set(Texture.java:348)
    at processing.opengl.PGraphicsOpenGL.updateTexture(PGraphicsOpenGL.java:6257)
    at processing.opengl.PGraphicsOpenGL.getTexture(PGraphicsOpenGL.java:6122)
    at processing.opengl.PGraphicsOpenGL$TexCache.getTexture(PGraphicsOpenGL.java:6914)
    at processing.opengl.PGraphicsOpenGL.flushPolys(PGraphicsOpenGL.java:2464)
    at processing.opengl.PGraphicsOpenGL.flush(PGraphicsOpenGL.java:2415)
    at processing.opengl.PGraphicsOpenGL.endDraw(PGraphicsOpenGL.java:1712)
    at processing.core.PApplet.handleDraw(PApplet.java:2404)
    at processing.opengl.PJOGL$PGLListener.display(PJOGL.java:862)
    at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:665)
    at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:649)
    at javax.media.opengl.awt.GLCanvas$10.run(GLCanvas.java:1289)
    at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1119)
    at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:994)
    at javax.media.opengl.awt.GLCanvas$11.run(GLCanvas.java:1300)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:241)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:694)
    at java.awt.EventQueue$3.run(EventQueue.java:692)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

clankill3r

It only happens in OpenGL, i will report it as a issue on github.

GoToLoop

Use Processing v2.0.3 for now! ;;)

clankill3r

Ok good to know. Why do you use 2.0.2 btw and not 2.1.2?

GoToLoop

Only when I see a version where folks stop complaining about nasty bugs I take the courage to finally upgrade! ;)
Actually I coulda been using v2.0.3. But the diffs. are so lil' from v2.0.2 that I didn't bug to upgrade to! :P

clankill3r

I believe 2.03 was the most bugged for me (OpenGl speaking). My memory was always filling like a counter until it was out of memory.

GoToLoop

95% I use JAVA2D! @-)

clankill3r

I think i will follow you with that :) https://github.com/processing/processing/issues/2494

p.s. codeanticode in case you ever watch this. I love the work you're doing and i'm amazed by the performance of processing with OpenGL!