Posted by siddharth.cmdz on Nov 23, 2014; 4:30am
URL: https://forum.jogamp.org/vbo-exception-tp4033611.html

hi all,

Im trying to do basic texture mapping with jogl 2, 4.4 core profile. I created my vbos for the geometry and passing the vertex and texture coordinates but I'm getting a black color. I had the debug and trace enabled and I get this when I do glBufferData()

glBufferData(<int> 0x8892, <long> 72, <java.nio.Buffer> java.nio.HeapFloatBuffer[pos=0 lim=18 cap=18], <int> 0x88E4)GLDebugEvent[ id 0x20071
        type Warning: generic
        severity Unknown (0x826b)
        source GL API
        msg Buffer detailed info: Buffer object 5 (bound to GL_ARRAY_BUFFER_ARB, usage hint is GL_STATIC_DRAW) will use VIDEO memory as the source for buffer object operations.
        when 1416715967091
        source 4.4 (Core profile, arb, debug, ES2 compat, ES3 compat, FBO, hardware) - 4.4.0 - hash 0x57284c88]
java.lang.Exception: Stack trace
        at java.lang.Thread.dumpStack(Unknown Source)
        at jogamp.opengl.GLDebugMessageHandler$StdErrGLDebugListener.messageSent(GLDebugMessageHandler.java:311)
        at jogamp.opengl.GLDebugMessageHandler.sendMessage(GLDebugMessageHandler.java:296)
        at jogamp.opengl.GLDebugMessageHandler.glDebugMessageARB(GLDebugMessageHandler.java:322)
        at jogamp.opengl.gl4.GL4bcImpl.dispatch_glBufferData(Native Method)
        at jogamp.opengl.gl4.GL4bcImpl.access$000(GL4bcImpl.java:29)
        at jogamp.opengl.gl4.GL4bcImpl$1.create(GL4bcImpl.java:36850)
        at jogamp.opengl.GLBufferObjectTracker.createBufferStorage(GLBufferObjectTracker.java:167)
        at jogamp.opengl.gl4.GL4bcImpl.glBufferData(GL4bcImpl.java:37383)
        at javax.media.opengl.DebugGL4bc.glBufferData(DebugGL4bc.java:938)
        at javax.media.opengl.TraceGL4bc.glBufferData(TraceGL4bc.java:741)
        at com.jogl.modern.workshop.core.Geometry4.init(Geometry4.java:133)
        at com.jogl.modern.drawables.SingleQuadDrawable.init(SingleQuadDrawable.java:62)
        at com.jogl.modern.workshop.core.Geometry4View.init(Geometry4View.java:181)
        at jogamp.opengl.GLDrawableHelper.init(GLDrawableHelper.java:639)
        at jogamp.opengl.GLDrawableHelper.init(GLDrawableHelper.java:661)
        at javax.media.opengl.awt.GLCanvas$9.run(GLCanvas.java:1340)
        at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1282)
        at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:1138)
        at javax.media.opengl.awt.GLCanvas$11.run(GLCanvas.java:1368)
        at javax.media.opengl.Threading.invoke(Threading.java:223)
        at javax.media.opengl.awt.GLCanvas.display(GLCanvas.java:522)
        at javax.media.opengl.awt.GLCanvas.paint(GLCanvas.java:576)
        at sun.awt.RepaintArea.paintComponent(Unknown Source)
        at sun.awt.RepaintArea.paint(Unknown Source)
        at sun.awt.windows.WComponentPeer.handleEvent(Unknown Source)
        at java.awt.Component.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
        at java.awt.EventQueue.access$200(Unknown Source)
        at java.awt.EventQueue$3.run(Unknown Source)
        at java.awt.EventQueue$3.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
        at java.awt.EventQueue$4.run(Unknown Source)
        at java.awt.EventQueue$4.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)

However, glGetError() returns 0. And the geometry displays fine and I have used similar block of code for normal attributes and they work fine. Below is the code for initializing the code for texture coordinates.. I cant figure out why jogl throws this exception and if it has any relation to not able to pass the texture coordinates to the shader?
     
int bytesPerFloat = Float.SIZE/Byte.SIZE;

      if(prim.getTexCoordBuffer() != null) {
        FloatBuffer texCoords = prim.getTexCoordBuffer();
        int numBytes = texCoords.capacity() * bytesPerFloat;
        gl4.glBindBuffer(GL4.GL_ARRAY_BUFFER, prim.getTexCoordBufferId());
        gl4.glBufferData(GL4.GL_ARRAY_BUFFER, numBytes, texCoords, GL4.GL_STATIC_DRAW);
        gl4.glVertexAttribPointer(TEXCOORD_ATTRIB_LOCATION, prim.getTexCoordSize(), GL4.GL_FLOAT, false, 0, 0);
        gl4.glBindBuffer(GL4.GL_ARRAY_BUFFER, 0);
      }

Any help ?