Vertexbuffer Trouble

Started by oXineteX, May 27, 2006, 01:45:22

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oXineteX

May 27, 2006, 01:45:22
Hi,
I try to implement Vertex Buffer Objects, but get some troubles with it.
class Object{
         private FloatBuffer tfb = null;
	private ByteBuffer mapped_buffer = null;
	private FloatBuffer mapped_float_buffer = null;
...
...
/**
*  Initialize VBO
*  t2 = Float Array
*/

       tfb = ByteBuffer.allocateDirect(t2.length * 4).order(ByteOrder.nativeOrder()).asFloatBuffer();
       tfb.put(t2).flip();
	    
       if ( !GLContext.getCapabilities().GL_ARB_vertex_buffer_object ) {
				System.out.println("ARB VBO not supported!");
				System.exit(1);
			}
	    	
       VertexBuffer.bufferData(VBO_ID, tfb);
			
       GL11.glEnableClientState(GL11.GL_VERTEX_ARRAY);
          ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, VBO_ID);
       GL11.glVertexPointer(3, GL11.GL_FLOAT, 0, 0);


}



    public void renderVBO(){
    //	GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);
    	GL11.glPushMatrix();
    	
		ByteBuffer new_mapped_buffer = ARBBufferObject.glMapBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB,
		                                                              ARBBufferObject.GL_READ_ONLY_ARB,
		                                                              tfb.capacity()*4,
		                                                              mapped_buffer);
		if ( new_mapped_buffer != mapped_buffer )
			mapped_float_buffer = new_mapped_buffer.order(ByteOrder.nativeOrder()).asFloatBuffer();
		
			mapped_buffer = new_mapped_buffer;
			mapped_float_buffer.rewind();
			tfb.rewind();
			mapped_float_buffer.put(tfb);
		
		if ( ARBBufferObject.glUnmapBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB) ){
			GL11.glVertexPointer(3, GL11.GL_FLOAT, 0, 0);
			GL11.glDrawArrays(GL11.GL_TRIANGLES, 0, tfb.capacity()/3);
		}
		
		GL11.glPopMatrix();
    }




I used up some code from the demo. I can render one Object correct, when i initialize a second one the first Object Buffer will be overwriten or an EXCEPTION_ACCESS_VIOLATION will be fired...



Thanks.

oXineteX

#1
May 27, 2006, 15:10:19
Ok, when i comment this out, no more Exception will Fired there 

      //  mapped_float_buffer.rewind(); 
        // tfb.rewind();




Ah ea i STREAM the vbo... (maybe thats the Prob?)

oXineteX

#2
May 27, 2006, 15:13:45
Thats the VM Log
Quote#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x77c172e3, pid=3316, tid=236
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_06-b05 mixed mode)
# Problematic frame:
# C  [MSVCRT.dll+0x372e3]
#

---------------  T H R E A D  ---------------

Current thread (0x0accc780):  JavaThread "AWT-EventQueue-0" [_thread_in_vm, id=236]

siginfo: ExceptionCode=0xc0000005, writing address 0x0b4fb000

Registers:
EAX=0x0fcb1000, EBX=0x06aff8c8, ECX=0x0001b400, EDX=0x00000000
ESP=0x0afbf608, EBP=0x0afbf610, ESI=0x0fc44000, EDI=0x0b4fb000
EIP=0x77c172e3, EFLAGS=0x00010212

Top of Stack: (sp=0x0afbf608)
0x0afbf608:   0accc780 0accc780 0afbf628 6d78443f
0x0afbf618:   0b4d8000 0fc21000 00090000 06aff8c8
0x0afbf628:   0afbf66c 00a7826f 0accc840 0afbf694
0x0afbf638:   0fc21000 00000000 0b4d8000 00000000
0x0afbf648:   00090000 00000000 0afbf650 00000000
0x0afbf658:   0afbf694 06b00d00 00000000 06aff8c8
0x0afbf668:   0afbf67c 0afbf6b4 00a72923 00000000
0x0afbf678:   00a76449 00090000 00000000 0b4d8000

Instructions: (pc=0x77c172e3)
0x77c172d3:   00 00 00 75 14 c1 e9 02 83 e2 03 83 f9 08 72 29
0x77c172e3:   f3 a5 ff 24 95 f8 73 c1 77 8b c7 ba 03 00 00 00


Stack: [0x0af80000,0x0afc0000),  sp=0x0afbf608,  free space=253k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C  [MSVCRT.dll+0x372e3]
V  [jvm.dll+0x11443f]
j  sun.misc.Unsafe.copyMemory(JJJ)V+0
j  java.nio.DirectFloatBufferU.put(Ljava/nio/FloatBuffer;)Ljava/nio/FloatBuffer;+157
j  Nurb.NURBSObject.renderVBO()V+87
j  GUI.Viewer.MainViewer.renderScene()V+35
j  GUI.AWTOpenGLCanvas.paintGL()V+169
j  org.lwjgl.opengl.AWTGLCanvas.paint(Ljava/awt/Graphics;)V+111
j  org.lwjgl.opengl.AWTGLCanvas.update(Ljava/awt/Graphics;)V+2
j  sun.awt.RepaintArea.updateComponent(Ljava/awt/Component;Ljava/awt/Graphics;)V+6
j  sun.awt.RepaintArea.paint(Ljava/lang/Object;Z)V+263
j  sun.awt.windows.WComponentPeer.handleEvent(Ljava/awt/AWTEvent;)V+63
j  java.awt.Component.dispatchEventImpl(Ljava/awt/AWTEvent;)V+765
j  java.awt.Component.dispatchEvent(Ljava/awt/AWTEvent;)V+2
j  java.awt.EventQueue.dispatchEvent(Ljava/awt/AWTEvent;)V+46
j  java.awt.EventDispatchThread.pumpOneEventForHierarchy(ILjava/awt/Component;)Z+233
j  java.awt.EventDispatchThread.pumpEventsForHierarchy(ILjava/awt/Conditional;Ljava/awt/Component;)V+26
j  java.awt.EventDispatchThread.pumpEvents(ILjava/awt/Conditional;)V+4
j  java.awt.EventDispatchThread.pumpEvents(Ljava/awt/Conditional;)V+3
j  java.awt.EventDispatchThread.run()V+9
v  ~StubRoutines::call_stub
V  [jvm.dll+0x845a9]
V  [jvm.dll+0xd9317]
V  [jvm.dll+0x8447a]
V  [jvm.dll+0x841d7]
V  [jvm.dll+0x9ed69]
V  [jvm.dll+0x109fe3]
V  [jvm.dll+0x109fb1]
C  [MSVCRT.dll+0x2a3b0]
C  [kernel32.dll+0xb50b]

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j  sun.misc.Unsafe.copyMemory(JJJ)V+0
j  java.nio.DirectFloatBufferU.put(Ljava/nio/FloatBuffer;)Ljava/nio/FloatBuffer;+157
j  Nurb.NURBSObject.renderVBO()V+87
j  GUI.Viewer.MainViewer.renderScene()V+35
j  GUI.AWTOpenGLCanvas.paintGL()V+169
j  org.lwjgl.opengl.AWTGLCanvas.paint(Ljava/awt/Graphics;)V+111
j  org.lwjgl.opengl.AWTGLCanvas.update(Ljava/awt/Graphics;)V+2
j  sun.awt.RepaintArea.updateComponent(Ljava/awt/Component;Ljava/awt/Graphics;)V+6
j  sun.awt.RepaintArea.paint(Ljava/lang/Object;Z)V+263
j  sun.awt.windows.WComponentPeer.handleEvent(Ljava/awt/AWTEvent;)V+63
j  java.awt.Component.dispatchEventImpl(Ljava/awt/AWTEvent;)V+765
j  java.awt.Component.dispatchEvent(Ljava/awt/AWTEvent;)V+2
j  java.awt.EventQueue.dispatchEvent(Ljava/awt/AWTEvent;)V+46
j  java.awt.EventDispatchThread.pumpOneEventForHierarchy(ILjava/awt/Component;)Z+233
j  java.awt.EventDispatchThread.pumpEventsForHierarchy(ILjava/awt/Conditional;Ljava/awt/Component;)V+26
j  java.awt.EventDispatchThread.pumpEvents(ILjava/awt/Conditional;)V+4
j  java.awt.EventDispatchThread.pumpEvents(Ljava/awt/Conditional;)V+3
j  java.awt.EventDispatchThread.run()V+9
v  ~StubRoutines::call_stub

---------------  P R O C E S S  ---------------

Java Threads: ( => current thread )
 0x0ada3e70 JavaThread "Thread-2" [_thread_blocked, id=2184]
 0x00356100 JavaThread "DestroyJavaVM" [_thread_blocked, id=3432]
=>0x0accc780 JavaThread "AWT-EventQueue-0" [_thread_in_vm, id=236]
 0x00a67768 JavaThread "AWT-Windows" daemon [_thread_in_native, id=3684]
 0x00a67410 JavaThread "AWT-Shutdown" [_thread_blocked, id=3892]
 0x0acb7238 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=736]
 0x00a2bf08 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=3548]
 0x00a2aad8 JavaThread "CompilerThread0" daemon [_thread_blocked, id=4020]
 0x00a29e58 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=464]
 0x00a20f18 JavaThread "Finalizer" daemon [_thread_blocked, id=276]
 0x00a1fa80 JavaThread "Reference Handler" daemon [_thread_blocked, id=4036]

Other Threads:
 0x00a1b8e0 VMThread [id=3464]
 0x00a2d0e8 WatcherThread [id=2068]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap
def new generation   total 640K, used 460K [0x02a70000, 0x02b20000, 0x02f50000)
 eden space 576K,  68% used [0x02a70000, 0x02ad3278, 0x02b00000)
 from space 64K, 100% used [0x02b00000, 0x02b10000, 0x02b10000)
 to   space 64K,   0% used [0x02b10000, 0x02b10000, 0x02b20000)
tenured generation   total 8244K, used 5798K [0x02f50000, 0x0375d000, 0x06a70000)
  the space 8244K,  70% used [0x02f50000, 0x034f99c8, 0x034f9a00, 0x0375d000)
compacting perm gen  total 8704K, used 8629K [0x06a70000, 0x072f0000, 0x0aa70000)
  the space 8704K,  99% used [0x06a70000, 0x072dd598, 0x072dd600, 0x072f0000)
No shared spaces configured.

Dynamic libraries:
0x00400000 - 0x0040c000    C:\Programme\Java\jre1.5.0_06\bin\javaw.exe
0x7c910000 - 0x7c9c7000    C:\WINDOWS\system32\ntdll.dll
0x7c800000 - 0x7c906000    C:\WINDOWS\system32\kernel32.dll
0x77da0000 - 0x77e4a000    C:\WINDOWS\system32\ADVAPI32.dll
0x77e50000 - 0x77ee1000    C:\WINDOWS\system32\RPCRT4.dll
0x77d10000 - 0x77da0000    C:\WINDOWS\system32\USER32.dll
0x77ef0000 - 0x77f37000    C:\WINDOWS\system32\GDI32.dll
0x77be0000 - 0x77c38000    C:\WINDOWS\system32\MSVCRT.dll
0x6d670000 - 0x6d804000    C:\Programme\Java\jre1.5.0_06\bin\client\jvm.dll
0x76af0000 - 0x76b1e000    C:\WINDOWS\system32\WINMM.dll
0x6d280000 - 0x6d288000    C:\Programme\Java\jre1.5.0_06\bin\hpi.dll
0x76bb0000 - 0x76bbb000    C:\WINDOWS\system32\PSAPI.DLL
0x6d640000 - 0x6d64c000    C:\Programme\Java\jre1.5.0_06\bin\verify.dll
0x6d300000 - 0x6d31d000    C:\Programme\Java\jre1.5.0_06\bin\java.dll
0x6d660000 - 0x6d66f000    C:\Programme\Java\jre1.5.0_06\bin\zip.dll
0x6d000000 - 0x6d167000    C:\Programme\Java\jre1.5.0_06\bin\awt.dll
0x72f70000 - 0x72f96000    C:\WINDOWS\system32\WINSPOOL.DRV
0x76330000 - 0x7634d000    C:\WINDOWS\system32\IMM32.dll
0x774b0000 - 0x775ed000    C:\WINDOWS\system32\ole32.dll
0x5b0f0000 - 0x5b128000    C:\WINDOWS\system32\uxtheme.dll
0x736d0000 - 0x73719000    C:\WINDOWS\system32\ddraw.dll
0x73b30000 - 0x73b36000    C:\WINDOWS\system32\DCIMAN32.dll
0x738b0000 - 0x73980000    C:\WINDOWS\system32\D3DIM700.DLL
0x6d240000 - 0x6d27d000    C:\Programme\Java\jre1.5.0_06\bin\fontmanager.dll
0x7c9d0000 - 0x7d1ef000    C:\WINDOWS\system32\shell32.dll
0x77f40000 - 0x77fb6000    C:\WINDOWS\system32\SHLWAPI.dll
0x773a0000 - 0x774a2000    C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.2180_x-ww_a84f1ff9\comctl32.dll
0x5d450000 - 0x5d4e7000    C:\WINDOWS\system32\comctl32.dll
0x6d4c0000 - 0x6d4d3000    C:\Programme\Java\jre1.5.0_06\bin\net.dll
0x71a10000 - 0x71a27000    C:\WINDOWS\system32\WS2_32.dll
0x71a00000 - 0x71a08000    C:\WINDOWS\system32\WS2HELP.dll
0x6d4e0000 - 0x6d4e9000    C:\Programme\Java\jre1.5.0_06\bin\nio.dll
0x10000000 - 0x10043000    C:\Programme\Java\jre1.5.0_06\bin\lwjgl.dll
0x72210000 - 0x7223b000    C:\WINDOWS\system32\DINPUT.dll
0x5f0d0000 - 0x5f19c000    C:\WINDOWS\system32\OPENGL32.dll
0x68fc0000 - 0x68fe0000    C:\WINDOWS\system32\GLU32.dll
0x77bd0000 - 0x77bd8000    C:\WINDOWS\system32\VERSION.dll
0x6d360000 - 0x6d366000    C:\Programme\Java\jre1.5.0_06\bin\jawt.dll
0x0afd0000 - 0x0afea000    C:\Programme\Java\jre1.5.0_06\bin\lwjgl-devil.dll
0x0b000000 - 0x0b18f000    C:\Programme\Java\jre1.5.0_06\bin\DevIL.dll
0x0b190000 - 0x0b1a8000    C:\Programme\Java\jre1.5.0_06\bin\ILU.dll
0x69000000 - 0x695d2000    C:\WINDOWS\system32\atioglxx.dll

VM Arguments:
java_command: test
Launcher Type: SUN_STANDARD

Environment Variables:
CLASSPATH=C:\Programme\QuickTime\QTSystem\QTJava.zip;C:\Programme\Borland\InterBase\InterClient\interclient.jar
PATH="C:\Programme\Microsoft DirectX SDK (December 2005)\Utilities\Bin\x86";C:\PROGRA~1\Borland\CBUILD~1\Bin;C:\PROGRA~1\Borland\CBUILD~1\Projects\Bpl;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Programme\ATI Technologies\ATI Control Panel;C:\Programme\QuickTime\QTSystem\;C:\BC5\BIN;
USERNAME=Hans-Peter Herion
OS=Windows_NT
PROCESSOR_IDENTIFIER=x86 Family 6 Model 9 Stepping 5, GenuineIntel



---------------  S Y S T E M  ---------------

OS: Windows XP Build 2600 Service Pack 2

CPU:total 1 family 6, cmov, cx8, fxsr, mmx, sse, sse2

Memory: 4k page, physical 523632k(88192k free), swap 1277756k(728716k free)

vm_info: Java HotSpot(TM) Client VM (1.5.0_06-b05) for windows-x86, built on Nov 10 2005 11:12:14 by "java_re" with MS VC++ 6.0

oXineteX

#3
May 27, 2006, 16:26:01
Ok i think the Problem is "solved" (is it??) I can render different VBOs i kick out the old render method and write 

public void renderVBO(){ 
       GL11.glPushMatrix(); 

      GL11.glEnableClientState(GL11.GL_VERTEX_ARRAY);
    		ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, VBO_ID);
		    GL11.glVertexPointer(3, GL11.GL_FLOAT, 0, 0);
      GL11.glDrawArrays(GL11.GL_TRIANGLES, 0, tfb.capacity()/3);
       
      GL11.glPopMatrix(); 
    }


But how does this work with mapped buffer

crash0veride007

#4
June 10, 2006, 03:20:14
This ought to help....



import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import org.lwjgl.BufferUtils;
import org.lwjgl.opengl.ARBBufferObject;
import org.lwjgl.opengl.ARBVertexBufferObject;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GLContext;
import org.lwjgl.opengl.glu.GLU;

public class VRVBO {
   public static boolean EXIT_APP = false;
   public static String WINDOW_TITLE = "VBO Test By Crash0veride007";
   public static DisplayMode displayMode;
   public static int WINDOW_WIDTH = 1280;
   public static int WINDOW_HEIGHT = 1024;
   public static int WINDOW_DEPTH = 32;
   public float FOVY = 80.0f;
   public float NEAR_VIEW_DISTANCE = 0.1f;
   public float FAR_VIEW_DISTANCE = 3500.0f;
   public float EYE_X = 0.0f;
   public float EYE_Y = 25.0f;
   public float EYE_Z = 100.0f;
   public float AT_X = 0.0f;
   public float AT_Y = 0.0f;
   public float AT_Z = 0.0f;
   public float UP_X = 0.0f;
   public float UP_Y = 1.0f;
   public float UP_Z = 0.0f;
   public float angle = 0.0f;
   float rand_R = 0.0f;
   float rand_G = 0.0f;
   float rand_B = 0.0f;
   public int vxsize = 128;
   public int vysize = 128;
   public int vzsize = 128;
   public int coordinatesize = vxsize*vysize*vzsize;
   public int volumesize = coordinatesize*3;
   public float [] vertices = new float[volumesize];
   public FloatBuffer volume = BufferUtils.createFloatBuffer(vertices.length);
   public int VBO_ID=0;
   
   public static void main(String[] args){
       VRVBO vrvbo = new VRVBO();
       vrvbo.run();
   }
   
   public void run() {
       long startTime = System.currentTimeMillis() + 5000;
       long fps = 0;
       float mbs =0;
       try {
           init();
           while (!EXIT_APP) {
               MainLoop();
               Display.update();
               if (startTime > System.currentTimeMillis()) {
                   fps++;
               } else {
                   long timeUsed = 5000 + (startTime - System.currentTimeMillis());
                   startTime = System.currentTimeMillis() + 5000;
                   String outdata = fps + " frames in " + (float) (timeUsed / 1000f) + " seconds = "+ (fps / (timeUsed / 1000f))+" FPS";
                   System.out.println( outdata );
                   mbs = (fps / (timeUsed / 1000f)) * volumesize * 4 /1000000;
                   System.out.println(mbs+" MB/s"+" Shoved down the pipeline");
                   Display.setTitle(WINDOW_TITLE + " " + outdata);
                   fps = 0;
               }
           }
           cleanup();
           System.exit(0);
       } catch (Exception e) {
           e.printStackTrace();
           System.exit(0);
       }
   }
   
   public void MainLoop() {
       if(Display.isCloseRequested()) {
           EXIT_APP = true;
       }
       rendershit();
   }
   
   public void createWindow() throws Exception {
       DisplayMode modes[] = Display.getAvailableDisplayModes();
       for (int i = 0; i < modes.length; i++) {
           if (modes.getWidth() == WINDOW_WIDTH
                   && modes.getHeight() == WINDOW_HEIGHT
                   && modes.getBitsPerPixel() == WINDOW_DEPTH) {
               displayMode = modes;
               break;
           }
       }
       Display.setDisplayMode(displayMode);
       Display.setTitle(WINDOW_TITLE);
       Display.create();
   }
   
   public void init() throws Exception {
       createWindow();
       checkext();
       initGL();
       populatevolume();
       VBO_ID=createVBOID();
       bufferData(VBO_ID, volume);
   }
   
   public void checkext() {
       if (!GLContext.getCapabilities().GL_ARB_vertex_buffer_object ) {
           System.out.println("ARB VBO not supported!");
           System.exit(1);
       }
   }
   
   public void initGL() {
       Display.setVSyncEnabled(false);
       GL11.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
       GL11.glClearDepth(1.0);
       //GL11.glEnable(GL11.GL_DEPTH_TEST);
       //GL11.glDepthFunc(GL11.GL_LEQUAL);
       GL11.glEnableClientState(GL11.GL_VERTEX_ARRAY);
       GL11.glMatrixMode(GL11.GL_PROJECTION);
       GL11.glLoadIdentity();
       GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
       GLU.gluPerspective(FOVY,(float) displayMode.getWidth() / (float) displayMode.getHeight(),NEAR_VIEW_DISTANCE,FAR_VIEW_DISTANCE);
       GL11.glMatrixMode(GL11.GL_MODELVIEW);
       GL11.glLoadIdentity();
       GL11.glHint(GL11.GL_PERSPECTIVE_CORRECTION_HINT, GL11.GL_NICEST);
       GLU.gluLookAt(EYE_X, EYE_Y, EYE_Z, AT_X, AT_Y, AT_Z, UP_X, UP_Y, UP_Z);
   }
   
   public void populatevolume() {
       int loc = 0;
       for (float x =0.0f; x < vxsize; x+=1.0f) {
           for (float y =0.0f; y < vysize; y+=1.0f) {
               for (float z =0.0f; z < vzsize; z+=1.0f) {
                   vertices[loc]=x;
                   vertices[loc+1]=y;
                   vertices[loc+2]=z;
                   //System.out.println(vertices[loc]+","+vertices[loc+1]+","+vertices[loc+2]);
                   loc+=3;
               }
           }
       }
       volume.put(vertices).rewind();
   }
   
   public  int createVBOID() {
       IntBuffer buffer = BufferUtils.createIntBuffer(1);
       ARBVertexBufferObject.glGenBuffersARB(buffer);
       return buffer.get(0);
   }
   
   public static void bufferData(int id, FloatBuffer buffer) {
       ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, id);
       ARBVertexBufferObject.glBufferDataARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, buffer, ARBVertexBufferObject.GL_STATIC_DRAW_ARB);
   }
   
   public void rendershit() {        
       rand_R =(float)Math.random();
       rand_G =(float)Math.random();
       rand_B =(float)Math.random();
       GL11.glColor3f(rand_R, rand_G, rand_B);        
       GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
       GL11.glRotatef(angle+1.0f,0.0f,1.0f,0.0f);
       GL11.glPushMatrix();
       GL11.glVertexPointer(3, GL11.GL_FLOAT, 0, 0);
       GL11.glDrawArrays(GL11.GL_POINTS, 0, coordinatesize);
       
       GL11.glPopMatrix();
   }
   
   public void cleanup() {
       IntBuffer del_vbo_id = BufferUtils.createIntBuffer(1);
   del_vbo_id.put(0, VBO_ID);
       ARBBufferObject.glDeleteBuffersARB(del_vbo_id);
       Display.destroy();
   }
   
}
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