GLGraphics - GLException Surface already locked

cedrickie..

GLGraphics - GLException Surface already locked

in Contributed Library Questions • 2 years ago

Now as the GLGraphics library works on my pc after installing the latest NVidia beta drivers, i started to integrate it into my sketch. But its not working due to the following error message. "GLException Surface already locked"
I tested a lot but couldnt figure out what is causing the problems.
I am using minim, toxi.math and the controlP5 library. I am also creating different PGraphics, but like i said, checked and removed a lot and couldnt figure out why it is not working. any ideas ?

Processing Console Error Message :

Exception in thread "AWT-EventQueue-0" javax.media.opengl.GLException: wglShareLists(0x20000, 0x20001) failed: error code 0
    at com.sun.opengl.impl.windows.WindowsGLContext.create(WindowsGLContext.java:136)
    at com.sun.opengl.impl.windows.WindowsGLContext.makeCurrentImpl(WindowsGLContext.java:150)
    at com.sun.opengl.impl.windows.WindowsOnscreenGLContext.makeCurrentImpl(WindowsOnscreenGLContext.java:65)
    at com.sun.opengl.impl.GLContextImpl.makeCurrent(GLContextImpl.java:127)
    at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:182)
    at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:258)
    at javax.media.opengl.GLCanvas.display(GLCanvas.java:130)
    at javax.media.opengl.GLCanvas.paint(GLCanvas.java:142)
    at sun.awt.RepaintArea.paintComponent(RepaintArea.java:248)
    at sun.awt.RepaintArea.paint(RepaintArea.java:224)
    at sun.awt.windows.WComponentPeer.handleEvent(WComponentPeer.java:310)
    at java.awt.Component.dispatchEventImpl(Component.java:4706)
    at java.awt.Component.dispatchEvent(Component.java:4460)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Exception in thread "AWT-EventQueue-0" javax.media.opengl.GLException: Surface already locked
    at com.sun.opengl.impl.windows.WindowsOnscreenGLDrawable.lockSurface(WindowsOnscreenGLDrawable.java:156)
    at com.sun.opengl.impl.windows.WindowsOnscreenGLContext.makeCurrentImpl(WindowsOnscreenGLContext.java:57)
    at com.sun.opengl.impl.GLContextImpl.makeCurrent(GLContextImpl.java:127)
    at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:182)
    at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:258)
    at javax.media.opengl.GLCanvas.display(GLCanvas.java:130)
    at javax.media.opengl.GLCanvas.paint(GLCanvas.java:142)
    at sun.awt.RepaintArea.paintComponent(RepaintArea.java:248)
    at sun.awt.RepaintArea.paint(RepaintArea.java:224)
    at sun.awt.windows.WComponentPeer.handleEvent(WComponentPeer.java:310)
    at java.awt.Component.dispatchEventImpl(Component.java:4706)
    at java.awt.Component.dispatchEvent(Component.java:4460)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

Replies(14)

andres

Re: GLGraphics - GLException Surface already locked

2 years ago

Please post the smallest version of your sketch that still gives the error.

cedrickie..

Re: GLGraphics - GLException Surface already locked

2 years ago

Interesting, i found the problem. its happening when using createFont();
check this simple example to reproduce the error:

import processing.opengl.*;
import codeanticode.glgraphics.*;

GLGraphicsOffScreen winGraphics; // the graphics object for the second window...
GLTextureWindow win;
PFont font;
void setup() {
size(600, 600, GLConstants.GLGRAPHICS);
win = new GLTextureWindow( this, 00, 0,400, 400 ); // 400x400 big at location 100,100
winGraphics = new GLGraphicsOffScreen( this, 800, 600 );
win.setTexture( winGraphics.getTexture() );
font = createFont("Arial",15);
}

void draw() {
winGraphics.beginDraw();
winGraphics.stroke(255);
winGraphics.line( random(width),random(height),random(width),random(height) );
winGraphics.endDraw();
}

hmm but now as i knew what one of the problems might be and removed it from my old/large sketch, i still get the error message. So there is probably something else causing the problem i removed as well. hmm

cedrickie..

Re: GLGraphics - GLException Surface already locked

2 years ago

I guess i found the solution.
you have to put

//set second Window
// win = new GLTextureWindow( this, 00, 0,400, 400 ); // 400x400 big at location 100,100
// winGraphics = new GLGraphicsOffScreen( this, 800, 600 );
// win.setTexture( winGraphics.getTexture() );

at the very end of setup. Not a big problem know as i know it. you might know the reason though

andres

Re: GLGraphics - GLException Surface already locked

2 years ago

Ok, good to know you find a way to make it work.

However, creating the texture window after or before shouldn't matter. At least, it works in both cases on my machine.

At least in the latest test release of glgraphics (which you can grab from here), the constructor of GLTextureWindow doesn't really do any opengl operation (the window is actually created at the beginning of the first iteration of the draw() method).

cedrickie..

Re: GLGraphics - GLException Surface already locked

2 years ago

i will test the latest release, i am stull using the one you build for bugfixing the driver issue. thx!

dipperson

Re: Re: GLGraphics - GLException Surface already locked

2 years ago

I also have the same problem. The last thing i added, is the GLGraphicOffscreen, since then, the error keeps coming back.
Ill also check the latest release.

Btw. I also used the latest NVidia beta drivers, i also had some start-up problems.

void setup() {
size(w,h,GLConstants.GLGRAPHICS);
frameRate(20);
gltex = new GLTextureWindow(this, 0, 0, 555, 555);
glg1 = new GLGraphicsOffScreen(this, 255, 255, true, 4);
tex = new GLTexture(this, "background.tga");
ftex = new GLTexture(this, tex.width, tex.height);
pixelate = new GLTextureFilter(this, "pixelate.xml");
gltex.setTexture(ftex);
}

andres

Re: GLGraphics - GLException Surface already locked

2 years ago

Not really sure what is going on here, since I have tried similar sketches on different platforms including windows 7, and they work fine, with the order in which the different GL classes are created not having any effect. I can only guess that it is an issue related to some versions of the nvidia drivers... but I don't think this is of much help.

I recommend trying out the latest release of glgraphics ( here) and putting the texture window initialization at the very end of the setup:

void setup() {
size(w,h,GLConstants.GLGRAPHICS);
...
gltex = new GLTextureWindow(this, 0, 0, 555, 555);
gltex.setTexture(ftex);
}

dipperson

Re: GLGraphics - GLException Surface already locked

2 years ago

Hi Andres, thanks for the support.

I moved the texture window initialization at the end of the setup(), but it didn't helped. I also found out that my system get very slow after a while, while there were none open application. So i reinstalled my video driver by removing everything first with Driver Sweeper. It didn't help.

I also tried to move the texture window initialization out of the setup() to a mouse event. The error now comes when i drag my mouse. Atleast i know now, that the problem ain't lying in the order of executing in the setup().
I tested also the size command, but i can't see a problem with it.

andres

Re: GLGraphics - GLException Surface already locked

2 years ago

Hi, I understand this can be frustrating, and I found it puzzling myself since I'm never able to reproduce these issues on my test machines. I can only guess it is caused by a very particular combination of hardware and software (windows version, opengl drivers...)

The truth is that at this point I'm kind of running out of workarounds to suggest. One thing you could do is to compare the behavior of your sketch when you use the latest test package of glgraphics ( 20110111) with the latest stable one ( 0.9.9). I say this because between these two versions I did change some things in the way the texture windows are initialized (both work fine on my tests, though). By knowing whether this makes some difference in your case, it might help to understand the problem better.

dipperson

Re: GLGraphics - GLException Surface already locked

2 years ago

Hi Andres,

I got a work around to solve this problem. Normaly the size command must come first after the setup(), i found out that if i place loads of commands before the size command, the problem won't show up all the time. So, it's a timing problem. If people see that i place commands before the size command, they throw stones at me and say other ugly things to me. To solve that, i found out that void init() can be placed before the void setup().
I also saw that all other commands in the setup() also needs time to be build up. So i placed some random commands in the setup(), this part is ugly and i can't solve that. Also note, that i didn't use GLoffscreen yet.
I also made use of a keyevent, so when i press escape, the program exit(). This seems to help. System.exit(0) does not help.

So while this is a work around, i saw some strange things. The console told me the version number of GLgraphics 2 times and that the texture window build up took longer after each run. After a while, the texture window won't build up at all.

The errors i got with version 0.9.9 and 20110106 are the same. If i run your example code, there is no problem, but when i add code, the errors keeps coming.
And yes, i agree that this must be a video card driver problem. I only want to pinpoint the problem so i can tell NVidia.

Ill test 20110111.
Thanks!

public void init() {
frameRate(1);
super.init();
}
void setup() {
size(w,h,GLConstants.GLGRAPHICS);
frame.setResizable(true);
tex = new GLTexture(this, "background.tga");
ftex = new GLTexture(this, tex.width, tex.height);
pixelate = new GLTextureFilter(this, "pixelate.xml");
gltex = new GLTextureWindow(this, 0, 0, 640, 480);
frame.setLocation(640, 480);
gltex.setTexture(ftex);
}

dipperson

Re: GLGraphics - GLException Surface already locked

2 years ago

I think i got it. Except, i don't know how to solve it.
When i used my new system for the first time, Processing didn't work correctly because of the 32 bit drivers of JOGL. I had to replace them with the 64 bit drivers in the C:\Program Files (x86)\Processing\libraries\opengl\library folder. These are old drivers (2008).

I made a small program to get a new error message:

GLGraphics VERSION: 20110111
GLGraphics VERSION: 20110111
gltex.ready true
Pixelate
javax.media.opengl.GLException: No OpenGL context current on this thread
    at javax.media.opengl.glu.GLU.getCurrentGL(GLU.java:234)
    at javax.media.opengl.glu.GLU.gluOrtho2D(GLU.java:1184)
    at codeanticode.glgraphics.GLState.setOrthographicView(GLState.java:344)
    at codeanticode.glgraphics.GLTextureFilter.setGLConf(GLTextureFilter.java:595)
    at codeanticode.glgraphics.GLTextureFilter.apply(GLTextureFilter.java:316)
    at codeanticode.glgraphics.GLTextureFilter.apply(GLTextureFilter.java:285)
    at codeanticode.glgraphics.GLTexture.filter(GLTexture.java:836)
    at PGraphic_moving_box.post(PGraphic_moving_box.java:90)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at processing.core.PApplet$RegisteredMethods.handle(Unknown Source)
    at processing.core.PApplet$RegisteredMethods.handle(Unknown Source)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)

I surfed on the net, where i found somebody who had the same problem. He got pointed at JOGL and suddenly rings a bell at me, that i also have old JOGL drivers.
Can somebody help me to get new Windows 64-bit OpenGL drivers?

Thanks.

import processing.opengl.*;
import codeanticode.glgraphics.*;
import processing.core.*;
int w=255;
int h=255;
GLTexture tex, ftex;
GLTextureWindow gltex;
GLTextureFilter pixelate;
boolean runonce=true;
public void init() {
frameRate(1);
super.init();
}
void setup() {
size(w,h,GLConstants.GLGRAPHICS);
frame.setResizable(true);
tex = new GLTexture(this, "background.jpg");
ftex = new GLTexture(this, tex.width, tex.height);
pixelate = new GLTextureFilter(this, "pixelate.xml");
frame.setLocation(640, 480);
// * title string
// * visible/not visible (first boolean argument)
// * with/out borders (second boolean argument)
// * resizable/fixed size (third boolean argument)
//texWin = new GLTextureWindow(this, "Output", 0, 0, 400, 400, true, true, true);
gltex = new GLTextureWindow(this, "Texture window", 0, 0, 640, 480, true, true, true);
gltex.setOverride(false);
registerPost(this);
}
void draw() {
frame.setTitle("Frame Number "+str(frameCount));
loadPixels();
for (int x=0;x < (width*height)-width; x++) {
pixels[x]=color(x/random(0,255),x/random(0,255),x/random(0,255));
}
updatePixels();
}
public void post() {
if (gltex.ready() && runonce) {
gltex.setOverride(true);
gltex.show();
gltex.setTexture(ftex);
gltex.render();
println("gltex.ready "+gltex.ready());
runonce=false;
}
if (gltex.ready() && !runonce) {
println("Pixelate");
gltex.setOverride(true);
//gltex.setTexture(ftex);
if (mouseX<256 && mouseY<256) {
pixelate.setParameterValue("pixel_size", map(mouseX, 0, width, 1, 30));
tex.filter(pixelate, ftex);
}
gltex.render();
}
}
void keyPressed()
{
println (keyCode);
if (keyCode == 82) {
} // r: Reset
else if (keyCode == LEFT) {
} // scroll to left
else if (keyCode == RIGHT) {
} // scroll to right
else if (keyCode == 32) {
} // space: stop scrolling
else if (keyCode == UP) {
} // scroll up
else if (keyCode == DOWN) {
} // scroll down
else if (keyCode == 107) {
} // + zoom in
else if (keyCode == 109) {
} // - zoom out
else if (keyCode == 27) {
println("einde");
exit();
}
}
void mouseReleased() {
println(mouseX+";"+mouseY);
}

andres

Re: GLGraphics - GLException Surface already locked

2 years ago

Regarding you last code, you shouldn't have the code

pixelate.setParameterValue("pixel_size", map(mouseX, 0, width, 1, 30));
tex.filter(pixelate, ftex);

in the post() method. The reason is quite technical, basically the problem is that by the time the post() methods are called, the current opengl context associated with the main surface is not longer current. But elements such as filters and textures are defined inside the main context, so they cannot be used when it is not current.

The texture windows can be rendered in the post method because they have their own opengl contexts.

As for the driver/jogl issues, I think you are getting confused because there are two distinct elements involved in here: the opengl drivers provided by the video card manufacturer, and JOGL which is the java binding that allow to access opengl from Java/Processing.

Cannot say for sure, but I don't think your problem is in the JOGL bindings, but caused by the opengl drivers. I might be wrong, though.

dipperson

Re: GLGraphics - GLException Surface already locked

2 years ago

Ah, that's a shame. I already installed the Netbeans OPENGL drivers (0.5.5) and it still gives an error with your library. Everything else seems to run very smooth. I am already thinking to buy a new videocard (i still need one more), except i am not sure if the GTX 260 give the same problem.

andres

Re: GLGraphics - GLException Surface already locked

2 years ago

I'm using a Geforce 320M with the nvidida drivers 196.82, and never experienced any problems. I don't see why a 260 shouldn't work, but I cannot guarantee either.

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