OPENGL PGraphics chrashes

Core Library Questions

cedrickie..

in Core Library Questions • 2 years ago

Wondering if i am the only one having this problem.
When running the simple Pgraphics example (and any other sketch creating and drawing Pgraphics) the sketch crashes because of an "outOfMemoryError" after just 30 frames...

P3D Works fine. I have assigned 1500MB in the settings.

it works fine when using P3D.
Any ideas ?

here is the code, and the error message:

import processing.opengl.*;

PGraphics pg;

void setup() {
size(600, 600,OPENGL);
pg = createGraphics(600, 600, P3D);
}

void draw() {
pg.beginDraw();
pg.background(random(255));
pg.endDraw();
image(pg,0,0);
println(frameCount);
}

An OutOfMemoryError means that your code is either using up too much memory
because of a bug (e.g. creating an array that's too large, or unintentionally
loading thousands of images), or that your sketch may need more memory to run.
If your sketch uses a lot of memory (for instance if it loads a lot of data files)
you can increase the memory available to your sketch using the Preferences window.
Exception in thread "Animation Thread" java.lang.OutOfMemoryError
    at sun.misc.Unsafe.allocateMemory(Native Method)
    at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:99)
    at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:288)
    at com.sun.opengl.util.BufferUtil.newByteBuffer(BufferUtil.java:65)
    at com.sun.opengl.util.BufferUtil.copyIntBufferAsByteBuffer(BufferUtil.java:229)
    at javax.media.opengl.glu.GLU.copyToByteBuffer(GLU.java:1450)
    at javax.media.opengl.glu.GLU.gluBuild2DMipmapsJava(GLU.java:1524)
    at javax.media.opengl.glu.GLU.gluBuild2DMipmaps(GLU.java:1581)
    at processing.opengl.PGraphicsOpenGL$ImageCache.rebind(PGraphicsOpenGL.java:959)
    at processing.opengl.PGraphicsOpenGL.bindTexture(PGraphicsOpenGL.java:767)
    at processing.opengl.PGraphicsOpenGL.renderTriangles(PGraphicsOpenGL.java:689)
    at processing.core.PGraphics3D.endShape(Unknown Source)
    at processing.core.PGraphics.endShape(Unknown Source)
    at processing.core.PGraphics.imageImpl(Unknown Source)
    at processing.core.PGraphics.image(Unknown Source)
    at processing.core.PApplet.image(Unknown Source)
    at sketch_dec16a.draw(sketch_dec16a.java:36)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:619)
java.lang.OutOfMemoryError

Replies(7)

monkstone

Re: OPENGL PGraphics chrashes

2 years ago

On my 64 bit linux box ( with 1500MB in settings for comparative purposes, custom 2.6.39.1 kernel NVIDIA 270.41.19 driver) runs for more than a 1000 frames without crashing ~~(but crash it will, as memory usage just keeps climbing).~~

Update:-

Just run Cedricks code again (10 Jun 2011 after amnon owed posted today) to make sure, and it did not crash on my system. Ram Memory usage (as judged by conky, so therefore whole system) stabilised at at about 1.4 Gb.

cedrickie..

Re: OPENGL PGraphics chrashes

2 years ago

thanks for testing. wondering why that happens

cedrickie..

Re: OPENGL PGraphics chrashes

2 years ago

its getting even more weird...
i made some more tests.

drawing the image using image(pg,0,0); runs with 10fps and crashes after 30 frames.
when not calling image it works fine. so drawing into the pgraphic is not the problem, its the drawing of the image.

but when using background(pg); instead of image(pg,0,0); it runs with 60fps and works fine.
Seems like a bug in the image() function...

if you use both, image and background, you get a slow framerate but it doesnt crashes... seems like call to background clears some kind of memory that image doesnt do...

what is also strange but i am not sure if it belongs to the same problem.
when not calling background or image. just drawing into the pgraphics. the background still changes color. it shouldnt... although the white ellipse is not drawn.

you can test it yourself.

import processing.opengl.*;
PGraphics pg;

void setup() {
size(600, 600,OPENGL);
pg = createGraphics(600, 600, P3D);

}

void draw() {

pg.beginDraw();
pg.background(random(255));
pg.fill(255);
pg.ellipse(width/2,height/2,100,100);
pg.endDraw();
//image(pg,0,0);
background(pg); //use bg instead of image works
println(frameRate);
}

Jesse Sco..

Re: OPENGL PGraphics chrashes

2 years ago

I've tested this on my Mac and Windows partitions... and both work.

I have the same graphics card as Cedric (GeForce 330M).

My Mac side works fine (10.6.5), though I am getting the same frameRate issues as above. No memory leak.

On my Windows 7 partition, with the newest (260.99) NVidia driver, it will crash if I set the memory allowance over ~~750mb~~. EDIT 850mb.

Task Manager and Resource Manager are showing approx. 1.6gb Physical Memory, and a 600,000KB commit size for jave.exe

amnon.owed

Re: OPENGL PGraphics chrashes

2 years ago

I'm also running into this bug. I can't use to P3D cause it's too slow. I also need PGraphics for dynamic textures.

Has anybody found a workaround?

Has anybody tried Ben's suggestion to test on OPENGL2? Does this solve the problem?

amnon.owed

Re: OPENGL PGraphics chrashes

2 years ago

All right, I tried it myself and can now confirm that this issue doesn't occur in OPENGL2, not to mention the fps increase. See the bug for more info.

Jesse Sco..

Re: OPENGL PGraphics chrashes

1 year ago

So... I've tested as well, and yes, the bug goes away in OpenGL2 (OpenGL in 2.0a), but this is still kind of crippling when we are using 1.5.1 ... ??

I know, I know " we just gave you a goddamned sports car, for chrissake" ...

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