../jogl.log

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/branches/JOGL_2_SANDBOX@1741 232f8b59-042b-4e1e-8c03-345bb8c30851

12 files changed, 2917 insertions, 555 deletions

diff --git a/src/classes/javax/media/opengl/GLArrayData.java b/src/classes/javax/media/opengl/GLArrayData.java
new file mode 100644
index 000000000..db017b00a
--- /dev/null
+++ b/src/classes/javax/media/opengl/GLArrayData.java
@@ -0,0 +1,153 @@
+
+package javax.media.opengl;
+
+import java.nio.*;
+
+public interface GLArrayData {
+
+    /**
+     * Returns true if this data set is intended for a GLSL vertex shader attribute,
+     * otherwise false, ie intended for fixed function vertex pointer
+     */
+    public boolean isVertexAttribute();
+
+    /**
+     * The index of the predefined array index, see list below,
+     * or -1 in case of a shader attribute array.
+     *
+     * @see javax.media.opengl.GL#GL_VERTEX_ARRAY
+     * @see javax.media.opengl.GL#GL_NORMAL_ARRAY
+     * @see javax.media.opengl.GL#GL_COLOR_ARRAY
+     * @see javax.media.opengl.GL#GL_TEXTURE_COORD_ARRAY
+     */
+    public int getIndex();
+
+    /**
+     * The name of the reflecting shader array attribute.
+     */
+    public String getName();
+
+    /**
+     * Set a new name for this array.
+     */
+    public void setName(String newName);
+
+
+    /**
+     * Returns the shader attribute location for this name,
+     * -1 if not yet determined
+     */
+    public int getLocation();
+
+    /**
+     * Sets the determined location of the shader attribute
+     * This is usually done within ShaderState.
+     *
+     * @see javax.media.opengl.util.glsl.ShaderState#glVertexAttribPointer(GL2ES2, GLArrayData)
+     */
+    public void setLocation(int v);
+
+
+    public boolean sealed();
+
+    /**
+     * The offset, if it's an VBO, otherwise -1
+     */
+    public long getOffset();
+
+    /**
+     * The Buffer holding the data, may be null in case of VBO
+     */
+    public Buffer getBuffer();
+
+    /**
+     * Determines wheather the data is server side (VBO),
+     * or a client side array (false).
+     */
+    public boolean isVBO();
+
+    /**
+     * The number of components per element
+     */
+    public int getComponents();
+
+    /**
+     * The GL data type of the components, ie. GL_FLOAT
+     */
+    public int getDataType();
+
+    /**
+     * True, if GL shall normalize fixed point data while converting 
+     * them into float
+     */
+    public boolean getNormalized();
+
+    /**
+     * The distance to the next payload,
+     * allowing interleaved arrays.
+     */
+    public int getStride();
+
+    public int getVerticeNumber();
+
+    public int getBufferCompSize();
+
+    public String toString();
+
+    //
+    // Data and GL state modification ..
+    //
+
+    public void destroy(GL gl);
+
+    public void reset(GL gl);
+
+    /**
+     * If seal is true, it
+     * disable write operations to the buffer.
+     * Calls flip, ie limit:=position and position:=0.
+     * Also enables the buffer for OpenGL, and passes the data.
+     *
+     * If seal is false, it
+     * enable write operations continuing
+     * at the buffer position, where you left off at seal(true),
+     * ie position:=limit and limit:=capacity.
+     * Also disables the buffer for OpenGL.
+     *
+     * @see #seal(boolean)
+     */
+    public void seal(GL gl, boolean seal);
+
+    public void enableBuffer(GL gl, boolean enable);
+
+    //
+    // Data modification ..
+    //
+
+    public void reset();
+
+    /**
+     * If seal is true, it
+     * disable write operations to the buffer.
+     * Calls flip, ie limit:=position and position:=0.
+     *
+     * If seal is false, it
+     * enable write operations continuing
+     * at the buffer position, where you left off at seal(true),
+     * ie position:=limit and limit:=capacity.
+     *
+     */
+    public void seal(boolean seal);
+
+    public void rewind();
+    public void padding(int done);
+    public void put(Buffer v);
+    public void putb(byte v);
+    public void puts(short v);
+    public void puti(int v);
+    public void putx(int v);
+    public void putf(float v);
+    public void putd(double v);
+
+}
+
diff --git a/src/classes/javax/media/opengl/GLArrayDataClient.java b/src/classes/javax/media/opengl/GLArrayDataClient.java
new file mode 100644
index 000000000..5048e15c3
--- /dev/null
+++ b/src/classes/javax/media/opengl/GLArrayDataClient.java
@@ -0,0 +1,498 @@
+
+package javax.media.opengl;
+
+import javax.media.opengl.util.*;
+import com.sun.opengl.impl.GLReflection;
+
+import java.nio.*;
+
+public class GLArrayDataClient implements GLArrayData {
+
+  /**
+   * @arg index The GL array index
+   * @arg name  The optional custom name for the GL array index, maybe null.
+   *            If null, the default name mapping will be used, see 'getPredefinedArrayIndexName(int)'.
+   *            This name might be used as the shader attribute name.
+   * @arg comps The array component number
+   * @arg dataType The array index GL data type
+   * @arg normalized Wheather the data shall be normalized
+   *
+   * @see javax.media.opengl.GLContext#getPredefinedArrayIndexName(int)
+   */
+  public static GLArrayDataClient createFixed(int index, String name, int comps, int dataType, boolean normalized, 
+                                              int initialSize)
+    throws GLException
+  {
+      GLProfile.isValidateArrayDataType(index, comps, dataType, false, true);
+      GLArrayDataClient adc = new GLArrayDataClient();
+      adc.init(name, index, comps, dataType, normalized, 0, null, initialSize, false);
+      return adc;
+  }
+
+  public static GLArrayDataClient createFixed(int index, String name, int comps, int dataType, boolean normalized, 
+                                              int stride, Buffer buffer)
+    throws GLException
+  {
+      GLProfile.isValidateArrayDataType(index, comps, dataType, false, true);
+      GLArrayDataClient adc = new GLArrayDataClient();
+      adc.init(name, index, comps, dataType, normalized, stride, buffer, comps*comps, false);
+      return adc;
+  }
+
+  public static GLArrayDataClient createGLSL(int index, String name, int comps, int dataType, boolean normalized, 
+                                             int initialSize)
+    throws GLException
+  {
+      GLProfile.isValidateArrayDataType(index, comps, dataType, true, true);
+      GLArrayDataClient adc = new GLArrayDataClient();
+      adc.init(name, index, comps, dataType, normalized, 0, null, initialSize, true);
+      return adc;
+  }
+
+  public static GLArrayDataClient createGLSL(int index, String name, int comps, int dataType, boolean normalized, 
+                                             int stride, Buffer buffer)
+    throws GLException
+  {
+      GLProfile.isValidateArrayDataType(index, comps, dataType, true, true);
+      GLArrayDataClient adc = new GLArrayDataClient();
+      adc.init(name, index, comps, dataType, normalized, stride, buffer, comps*comps, true);
+      return adc;
+  }
+
+  // 
+  // Data read access
+  //
+
+  public boolean isVertexAttribute() { return isVertexAttribute; }
+
+  public int getIndex() { return index; }
+
+  public int getLocation() { return location; }
+
+  public void setLocation(int v) { location = v; }
+
+  public String getName() { return name; }
+
+  public long getOffset() { return -1; }
+
+  public Buffer getBuffer() { return buffer; }
+
+  public boolean isVBO() { return false; }
+
+  public int getComponents() { return components; }
+
+  public int getDataType() { return dataType; }
+
+  public boolean getNormalized() { return normalized; }
+
+  public int getStride() { return stride; }
+
+  public boolean sealed() { return sealed; }
+
+  public Class getBufferClass() {
+    return clazz;
+  }
+
+  public int getVerticeNumber() {
+    return ( buffer!=null ) ? ( buffer.limit() / components ) : 0 ;
+  }
+
+  //
+  // Data and GL state modification ..
+  //
+
+  public void setName(String newName) {
+    location = -1;
+    name = newName;
+  }
+
+  public void destroy(GL gl) {
+    reset(gl);
+  }
+
+  public void reset(GL gl) {
+    enableBuffer(gl, false);
+    reset();
+  }
+
+  public void seal(GL gl, boolean seal)
+  {
+    seal(seal);
+    if(sealedGL==seal) return;
+    sealedGL = seal;
+    if(seal) {
+        init_vbo(gl);
+
+        enableBuffer(gl, true);
+    } else {
+        enableBuffer(gl, false);
+    }
+  }
+
+  public void enableBuffer(GL gl, boolean enable)
+  {
+    if(enable) {
+        checkSeal(true);
+        if(!bufferEnabled && null!=buffer) {
+            buffer.rewind();
+            enableBufferGLImpl(gl, true);
+        }
+    } else if(bufferEnabled) {
+        enableBufferGLImpl(gl, false);
+    }
+  }
+
+  //
+  // Data modification ..
+  //
+
+  public void reset() {
+    if(buffer!=null) {
+        buffer.clear();
+    }
+    this.sealed=false;
+    this.bufferEnabled=false;
+    this.bufferWritten=false;
+  }
+
+  public void seal(boolean seal)
+  {
+    if(sealed==seal) return;
+    sealed = seal;
+    if(seal) {
+        bufferWritten=false;
+        if (null!=buffer) {
+            buffer.flip();
+        }
+    } else {
+        if (null!=buffer) {
+            buffer.position(buffer.limit());
+            buffer.limit(buffer.capacity());
+        }
+    }
+  }
+
+
+  public void rewind() {
+    if(buffer!=null) {
+        buffer.rewind();
+    }
+  }
+
+  public void padding(int done) {
+    if ( buffer==null || sealed ) return;
+    while(done<strideL) {
+        if(clazz==ByteBuffer.class) {
+            ((ByteBuffer)buffer).put((byte)0);
+        } else if(clazz==ShortBuffer.class) {
+            ((ShortBuffer)buffer).put((short)0);
+        } else if(clazz==IntBuffer.class) {
+            ((IntBuffer)buffer).put(0);
+        } else if(clazz==FloatBuffer.class) {
+            ((FloatBuffer)buffer).put(0f);
+        } else {
+            throw new GLException("Given Buffer Class not supported: "+clazz+" :\n\t"+this);
+        }
+        done++;
+    }
+  }
+
+  /**
+   * Generic buffer relative put method.
+   *
+   * This class buffer Class must match the arguments buffer class.
+   * The arguments remaining elements must be a multiple of this arrays element stride.
+   */
+  public void put(Buffer v) {
+    if ( buffer==null || sealed ) return;
+    if(0!=(v.remaining() % strideL)) {
+        throw new GLException("Buffer length ("+v.remaining()+") is not a multiple of component-stride:\n\t"+this);
+    }
+    Class vClazz = v.getClass();
+    if(!GLReflection.instanceOf(vClazz, clazz.getName())) {
+        throw new GLException("This array's buffer class "+clazz+" doesn't match the argument's Class: "+vClazz+" :\n\t"+this);
+    }
+    growBufferIfNecessary(v.remaining());
+    if(clazz==ByteBuffer.class) {
+        ((ByteBuffer)buffer).put((ByteBuffer)v);
+    } else if(clazz==ShortBuffer.class) {
+        ((ShortBuffer)buffer).put((ShortBuffer)v);
+    } else if(clazz==IntBuffer.class) {
+        ((IntBuffer)buffer).put((IntBuffer)v);
+    } else if(clazz==FloatBuffer.class) {
+        ((FloatBuffer)buffer).put((FloatBuffer)v);
+    }
+  }
+
+  public void putb(byte v) {
+    if ( buffer==null || sealed ) return;
+    growBufferIfNecessary(1);
+    if(clazz==ByteBuffer.class) {
+        ((ByteBuffer)buffer).put(v);
+    } else if(clazz==ShortBuffer.class) {
+        ((ShortBuffer)buffer).put((short)v);
+    } else if(clazz==IntBuffer.class) {
+        ((IntBuffer)buffer).put((int)v);
+    } else {
+        throw new GLException("Byte doesn't match Buffer Class: "+clazz+" :\n\t"+this);
+    }
+  }
+
+  public void puts(short v) {
+    if ( buffer==null || sealed ) return;
+    growBufferIfNecessary(1);
+    if(clazz==ShortBuffer.class) {
+        ((ShortBuffer)buffer).put(v);
+    } else if(clazz==IntBuffer.class) {
+        ((IntBuffer)buffer).put((int)v);
+    } else {
+        throw new GLException("Short doesn't match Buffer Class: "+clazz+" :\n\t"+this);
+    }
+  }
+
+  public void puti(int v) {
+    if ( buffer==null || sealed ) return;
+    growBufferIfNecessary(1);
+    if(clazz==IntBuffer.class) {
+        ((IntBuffer)buffer).put(v);
+    } else {
+        throw new GLException("Integer doesn't match Buffer Class: "+clazz+" :\n\t"+this);
+    }
+  }
+
+  public void putx(int v) {
+    puti(v);
+  }
+
+  public void putf(float v) {
+    if ( buffer==null || sealed ) return;
+    growBufferIfNecessary(1);
+    if(clazz==FloatBuffer.class) {
+        ((FloatBuffer)buffer).put(v);
+    } else if(clazz==IntBuffer.class) {
+        ((IntBuffer)buffer).put(FixedPoint.toFixed(v));
+    } else {
+        throw new GLException("Float doesn't match Buffer Class: "+clazz+" :\n\t"+this);
+    }
+  }
+
+  public void putd(double v) {
+    if ( buffer==null || sealed ) return;
+    growBufferIfNecessary(1);
+    if(clazz==FloatBuffer.class) {
+        ((FloatBuffer)buffer).put((float)v);
+    } else {
+        throw new GLException("Double doesn't match Buffer Class: "+clazz+" :\n\t"+this);
+    }
+  }
+
+  public String toString() {
+    return "GLArrayDataClient["+name+
+                       ", index "+index+
+                       ", location "+location+
+                       ", isVertexAttribute "+isVertexAttribute+
+                       ", dataType "+dataType+ 
+                       ", bufferClazz "+clazz+ 
+                       ", vertices "+getVerticeNumber()+
+                       ", components "+components+ 
+                       ", stride "+stride+"u "+strideB+"b "+strideL+"c"+
+                       ", initialSize "+initialSize+ 
+                       ", sealed "+sealed+ 
+                       ", bufferEnabled "+bufferEnabled+ 
+                       ", bufferWritten "+bufferWritten+ 
+                       ", buffer "+buffer+ 
+                       "]";
+  }
+
+  public static final Class getBufferClass(int dataType) {
+    switch(dataType) {
+        case GL.GL_BYTE:
+        case GL.GL_UNSIGNED_BYTE:
+            return ByteBuffer.class;
+        case GL.GL_SHORT:
+        case GL.GL_UNSIGNED_SHORT:
+            return ShortBuffer.class;
+        case GL2ES1.GL_FIXED:
+            return IntBuffer.class;
+        case GL.GL_FLOAT:
+            return FloatBuffer.class;
+        default:    
+            throw new GLException("Given OpenGL data type not supported: "+dataType);
+    }
+  }
+
+  public final int getBufferCompSize() {
+    if(clazz==ByteBuffer.class) {
+        return BufferUtil.SIZEOF_BYTE;
+    }
+    if(clazz==ShortBuffer.class) {
+        return BufferUtil.SIZEOF_SHORT;
+    }
+    if(clazz==IntBuffer.class) {
+        return BufferUtil.SIZEOF_INT;
+    }
+    if(clazz==FloatBuffer.class) {
+        return BufferUtil.SIZEOF_FLOAT;
+    }
+    throw new GLException("Given Buffer Class not supported: "+clazz+":\n\t"+this);
+  }
+
+  // non public matters
+
+  protected final boolean growBufferIfNecessary(int spare) {
+    if(buffer==null || buffer.remaining()<spare) { 
+        growBuffer(initialSize);
+        return true;
+    }
+    return false;
+  }
+
+  protected final void growBuffer(int additional) {
+    if(sealed || 0==additional || 0==components) return;
+
+    // add the stride delta
+    additional += (additional/components)*(strideL-components);
+
+    if(components>0) {
+        int osize = (buffer!=null)?buffer.capacity():0;
+        if(clazz==ByteBuffer.class) {
+            ByteBuffer newBBuffer = BufferUtil.newByteBuffer( (osize+additional) * components );
+            if(buffer!=null) {
+                buffer.flip();
+                newBBuffer.put((ByteBuffer)buffer);
+            }
+            buffer = newBBuffer;
+        } else if(clazz==ShortBuffer.class) {
+            ShortBuffer newSBuffer = BufferUtil.newShortBuffer( (osize+additional) * components );
+            if(buffer!=null) {
+                buffer.flip();
+                newSBuffer.put((ShortBuffer)buffer);
+            }
+            buffer = newSBuffer;
+        } else if(clazz==IntBuffer.class) {
+            IntBuffer newIBuffer = BufferUtil.newIntBuffer( (osize+additional) * components );
+            if(buffer!=null) {
+                buffer.flip();
+                newIBuffer.put((IntBuffer)buffer);
+            }
+            buffer = newIBuffer;
+        } else if(clazz==FloatBuffer.class) {
+            FloatBuffer newFBuffer = BufferUtil.newFloatBuffer( (osize+additional) * components );
+            if(buffer!=null) {
+                buffer.flip();
+                newFBuffer.put((FloatBuffer)buffer);
+            }
+            buffer = newFBuffer;
+        } else {
+            throw new GLException("Given Buffer Class not supported: "+clazz+":\n\t"+this);
+        }
+    }
+  }
+
+  protected final void checkSeal(boolean test) throws GLException {
+    if(sealed!=test) {
+        if(test) {
+            throw new GLException("Not Sealed yet, seal first:\n\t"+this); 
+        } else {
+            throw new GLException("Already Sealed, can't modify VBO:\n\t"+this); 
+        }
+    }
+  }
+
+  protected void init(String name, int index, int comps, int dataType, boolean normalized, int stride, Buffer data, 
+                      int initialSize, boolean isVertexAttribute) 
+    throws GLException
+  {
+    this.isVertexAttribute = isVertexAttribute;
+    this.index = index;
+    this.location = -1;
+    this.name = (null==name)?GLContext.getPredefinedArrayIndexName(index):name;
+    if(null==this.name) {
+        throw new GLException("Not a valid GL array index: "+index);
+    }
+    this.dataType = dataType;
+    this.clazz = getBufferClass(dataType);
+    switch(dataType) {
+        case GL.GL_BYTE:
+        case GL.GL_UNSIGNED_BYTE:
+        case GL.GL_SHORT:
+        case GL.GL_UNSIGNED_SHORT:
+        case GL2ES1.GL_FIXED:
+            this.normalized = normalized;
+            break;
+        default:    
+            this.normalized = false;
+    }
+
+    int bpc = getBufferCompSize();
+    if(0<stride && stride<comps*bpc) {
+        throw new GLException("stride ("+stride+") lower than component bytes, "+comps+" * "+bpc);
+    }
+    if(0<stride && stride%bpc!=0) {
+        throw new GLException("stride ("+stride+") not a multiple of bpc "+bpc);
+    }
+    this.buffer = data;
+    this.components = comps;
+    this.stride=stride;
+    this.strideB=(0==stride)?comps*bpc:stride;
+    this.strideL=(0==stride)?comps:strideB/bpc;
+    this.initialSize = initialSize;
+    this.sealed=false;
+    this.sealedGL=false;
+    this.bufferEnabled=false;
+    this.bufferWritten=false;
+    if(null==buffer) {
+        growBuffer(initialSize);
+    }
+  }
+
+  protected void enableBufferGLImpl(GL gl, boolean enable) {
+    if(enable) {
+        gl.glEnableClientState(index);
+        bufferEnabled = true;
+
+        switch(index) {
+            case GL.GL_VERTEX_ARRAY:
+                gl.glVertexPointer(this);
+                break;
+            case GL.GL_NORMAL_ARRAY:
+                gl.glNormalPointer(this);
+                break;
+            case GL.GL_COLOR_ARRAY:
+                gl.glColorPointer(this);
+                break;
+            case GL.GL_TEXTURE_COORD_ARRAY:
+                gl.glTexCoordPointer(this);
+                break;
+            default:
+                throw new GLException("invalid glArrayIndex: "+index+":\n\t"+this); 
+        }
+        bufferWritten=true;
+    } else {
+        gl.glDisableClientState(index);
+        bufferEnabled = false;
+    }
+  }
+
+  protected void init_vbo(GL gl) {}
+
+  protected GLArrayDataClient() { }
+
+  protected int index;
+  protected int location;
+  protected String name;
+  protected int components;
+  protected int dataType;
+  protected boolean normalized;
+  protected int stride;  // user given stride
+  protected int strideB; // stride in bytes
+  protected int strideL; // stride in logical components
+  protected Class clazz;
+  protected Buffer buffer;
+  protected int initialSize;
+  protected boolean isVertexAttribute;
+  protected boolean sealed, sealedGL;
+  protected boolean bufferEnabled;
+  protected boolean bufferWritten;
+}
+
diff --git a/src/classes/javax/media/opengl/GLArrayDataServer.java b/src/classes/javax/media/opengl/GLArrayDataServer.java
new file mode 100644
index 000000000..d4f2604fd
--- /dev/null
+++ b/src/classes/javax/media/opengl/GLArrayDataServer.java
@@ -0,0 +1,265 @@
+
+package javax.media.opengl;
+
+import javax.media.opengl.*;
+import java.nio.*;
+import com.sun.opengl.impl.*;
+
+public class GLArrayDataServer extends GLArrayDataClient implements GLArrayData {
+
+  //
+  // lifetime matters
+  //
+
+  /**
+   * Create a VBOBuffer object, using a predefined fixed function array index
+   * and starting with a given Buffer object incl it's stride
+   *
+   * On profiles GL2 and ES1 the fixed function pipeline behavior is as expected.
+   * On profile ES2 the fixed function emulation will transform these calls to 
+   * EnableVertexAttribArray and VertexAttribPointer calls,
+   * and a predefined vertex attribute variable name will be choosen.
+   *
+   * @arg index The GL array index
+   * @arg name  The optional custom name for the GL array index, maybe null.
+   *            If null, the default name mapping will be used, see 'getPredefinedArrayIndexName(int)'.
+   *            This name might be used as the shader attribute name.
+   * @arg comps The array component number
+   * @arg dataType The array index GL data type
+   * @arg normalized Wheather the data shall be normalized
+   *
+   * @see javax.media.opengl.GLContext#getPredefinedArrayIndexName(int)
+   */
+  public static GLArrayDataServer createFixed(int index, String name, int comps, int dataType, boolean normalized,
+                                              int stride, Buffer buffer, int glBufferUsage)
+    throws GLException
+  {
+    GLProfile.isValidateArrayDataType(index, comps, dataType, false, true);
+
+    GLArrayDataServer ads = new GLArrayDataServer();
+    ads.init(name, index, comps, dataType, normalized, stride, buffer, 0, buffer.limit(), glBufferUsage, false);
+    return ads;
+  }
+
+  /**
+   * Create a VBOBuffer object, using a predefined fixed function array index
+   * and starting with a new created Buffer object with initialSize size
+   *
+   * On profiles GL2 and ES1 the fixed function pipeline behavior is as expected.
+   * On profile ES2 the fixed function emulation will transform these calls to 
+   * EnableVertexAttribArray and VertexAttribPointer calls,
+   * and a predefined vertex attribute variable name will be choosen.
+   *
+   * @see javax.media.opengl.GLContext#getPredefinedArrayIndexName(int)
+   */
+  public static GLArrayDataServer createFixed(int index, String name, int comps, int dataType, boolean normalized, 
+                                              int initialSize, int glBufferUsage)
+    throws GLException
+  {
+    GLProfile.isValidateArrayDataType(index, comps, dataType, false, true);
+
+    GLArrayDataServer ads = new GLArrayDataServer();
+    ads.init(name, index, comps, dataType, normalized, 0, null, 0, initialSize, glBufferUsage, false);
+    return ads;
+  }
+
+  /**
+   * Create a VBOBuffer object, using a predefined fixed function array index
+   * and starting with a given Buffer offset incl it's stride
+   *
+   * This object can neither be enabled, nor rendered, since no knowledge of the buffer
+   * itself is available. This object is only a VBO variant of GLArrayData
+   * and cannot being drawn.
+   *
+   * @see javax.media.opengl.GLContext#getPredefinedArrayIndexName(int)
+   */
+  public static GLArrayDataServer createFixed(int index, String name, int comps, int dataType, boolean normalized,
+                                              int stride, long bufferOffset)
+    throws GLException
+  {
+    GLProfile.isValidateArrayDataType(index, comps, dataType, false, true);
+
+    GLArrayDataServer ads = new GLArrayDataServer();
+    ads.init(name, index, comps, dataType, normalized, stride, null, bufferOffset, 0, -1, false);
+    return ads;
+  }
+
+  /**
+   * Create a VBOBuffer object, using a custom GLSL array attribute name
+   * and starting with a new created Buffer object with initialSize size
+   *
+   * @see javax.media.opengl.GLContext#getPredefinedArrayIndexName(int)
+   */
+  public static GLArrayDataServer createGLSL(String name, int comps, int dataType, boolean normalized,
+                                             int initialSize, int glBufferUsage) 
+    throws GLException
+  {
+    GLProfile.isValidateArrayDataType(-1, comps, dataType, true, true);
+    Class[] types = new Class[]{ String.class, int.class, int.class, boolean.class, int.class, int.class };
+    Object[] args = new Object[]{ name, new Integer(comps), new Integer(dataType), 
+                                  new Boolean(normalized), new Integer(initialSize), new Integer(glBufferUsage) } ;
+
+    if(GLProfile.isGL2ES2()) {
+        return (GLArrayDataServer) GLReflection.createInstance("com.sun.opengl.impl.glsl.GLSLArrayDataServer", types, args);
+    }
+    throw new GLException("GLArrayDataServer not supported for profile: "+GLProfile.getProfile());
+  }
+
+  /**
+   * Create a VBOBuffer object, using a custom GLSL array attribute name
+   * and starting with a given Buffer object incl it's stride
+   *
+   * @see javax.media.opengl.GLContext#getPredefinedArrayIndexName(int)
+   */
+  public static GLArrayDataServer createGLSL(String name, int comps, int dataType, boolean normalized,
+                                             int stride, Buffer buffer, int glBufferUsage) 
+    throws GLException
+  {
+    GLProfile.isValidateArrayDataType(-1, comps, dataType, true, true);
+    Class[] types = new Class[]{ String.class, int.class, int.class, boolean.class, int.class, Buffer.class, int.class };
+    Object[] args = new Object[]{ name, new Integer(comps), new Integer(dataType), 
+                                  new Boolean(normalized), new Integer(stride), buffer, new Integer(glBufferUsage) } ;
+
+    if(GLProfile.isGL2ES2()) {
+        return (GLArrayDataServer) GLReflection.createInstance("com.sun.opengl.impl.glsl.GLSLArrayDataServer", types, args);
+    }
+    throw new GLException("GLArrayDataServer not supported for profile: "+GLProfile.getProfile());
+  }
+
+  //
+  // Data matters GLArrayData
+  //
+
+  public long getOffset() { return vboUsage?bufferOffset:-1; }
+
+  public boolean isVBO() { return vboUsage; }
+
+  //
+  // Data and GL state modification ..
+  //
+
+  public void destroy(GL gl) {
+    super.destroy(gl);
+    if(vboName!=0) {
+        int[] tmp = new int[1];
+        tmp[0] = vboName;
+        gl.glDeleteBuffers(1, tmp, 0);
+        vboName = 0;
+    }
+  }
+
+  //
+  // data matters 
+  //
+
+  /**
+   * Convenient way do disable the VBO behavior and 
+   * switch to client side data one
+   * Only possible if buffer is defined.
+   */
+  public void    setVBOUsage(boolean vboUsage) { 
+    checkSeal(false);
+    this.vboUsage=(null!=buffer)?vboUsage:true; 
+  }
+
+  public int getBufferUsage() {
+    return glBufferUsage;
+  }
+
+  public String toString() {
+    return "GLArrayDataServer["+name+
+                       ", index "+index+
+                       ", location "+location+
+                       ", isVertexAttribute "+isVertexAttribute+
+                       ", dataType "+dataType+ 
+                       ", bufferClazz "+clazz+ 
+                       ", vertices "+getVerticeNumber()+
+                       ", components "+components+ 
+                       ", stride "+stride+"u "+strideB+"b "+strideL+"c"+
+                       ", initialSize "+initialSize+ 
+                       ", glBufferUsage "+glBufferUsage+ 
+                       ", vboUsage "+vboUsage+ 
+                       ", vboName "+vboName+ 
+                       ", sealed "+sealed+ 
+                       ", bufferEnabled "+bufferEnabled+ 
+                       ", bufferWritten "+bufferWritten+ 
+                       ", buffer "+buffer+ 
+                       ", offset "+bufferOffset+ 
+                       "]";
+  }
+
+  //
+  // non public matters ..
+  //
+
+  protected void init(String name, int index, int comps, int dataType, boolean normalized, 
+                      int stride, Buffer data, long offset, int initialSize, int glBufferUsage, boolean isVertexAttribute)
+    throws GLException
+  {
+    super.init(name, index, comps, dataType, normalized, stride, data, initialSize, isVertexAttribute);
+
+    vboUsage=true;
+
+    if( ! (GLProfile.isGL2ES2() && glBufferUsage==GL2ES2.GL_STREAM_DRAW) ) {
+        switch(glBufferUsage) {
+            case -1: // nop
+            case GL2ES1.GL_STATIC_DRAW:
+            case GL2ES1.GL_DYNAMIC_DRAW:
+                break;
+            default:
+                throw new GLException("invalid glBufferUsage: "+glBufferUsage+":\n\t"+this); 
+        }
+    }
+    this.bufferOffset=offset;
+    this.glBufferUsage = glBufferUsage;
+    this.vboName = 0;
+  }
+
+  protected void enableBufferGLImpl(GL gl, boolean enable) {
+    if(enable) {
+        gl.glEnableClientState(index);
+        bufferEnabled = true;
+
+        if(vboUsage) {
+            gl.glBindBuffer(GL.GL_ARRAY_BUFFER, vboName);
+            if(!bufferWritten) {
+                gl.glBufferData(GL.GL_ARRAY_BUFFER, buffer.limit() * getBufferCompSize(), buffer, glBufferUsage);
+            }
+        }
+        switch(index) {
+            case GL.GL_VERTEX_ARRAY:
+                gl.glVertexPointer(this);
+                break;
+            case GL.GL_NORMAL_ARRAY:
+                gl.glNormalPointer(this);
+                break;
+            case GL.GL_COLOR_ARRAY:
+                gl.glColorPointer(this);
+                break;
+            case GL.GL_TEXTURE_COORD_ARRAY:
+                gl.glTexCoordPointer(this);
+                break;
+            default:
+                throw new GLException("invalid glArrayIndex: "+index+":\n\t"+this); 
+        }
+        bufferWritten=true;
+    } else {
+        gl.glDisableClientState(index);
+        bufferEnabled = false;
+    }
+  }
+  protected void init_vbo(GL gl) {
+    if(vboUsage && vboName==0) {
+        int[] tmp = new int[1];
+        gl.glGenBuffers(1, tmp, 0);
+        vboName = tmp[0];
+    }
+  }
+
+  protected long bufferOffset;
+  protected int glBufferUsage;
+  protected int vboName;
+  protected boolean vboUsage;
+
+}
+
diff --git a/src/classes/javax/media/opengl/GLContext.java b/src/classes/javax/media/opengl/GLContext.java
index 02345ef04..998ede419 100644
--- a/src/classes/javax/media/opengl/GLContext.java
+++ b/src/classes/javax/media/opengl/GLContext.java
@@ -193,4 +193,63 @@ public abstract class GLContext {
            "(GL: "+getGL().getClass().getName()+","+
            " Factory: "+ getGLDrawable().getFactory().getClass().getName()+")";
   }
+
+  /**
+   * Mapping fixed function (client) array indices to 
+   * GLSL array attribute names.
+   *
+   * Useful for uniq mapping of canonical array index names as listed.
+   * 
+   * @see #mgl_Vertex
+   * @see javax.media.opengl.GL#GL_VERTEX_ARRAY
+   * @see #mgl_Normal
+   * @see javax.media.opengl.GL#GL_NORMAL_ARRAY
+   * @see #mgl_Color
+   * @see javax.media.opengl.GL#GL_COLOR_ARRAY
+   * @see #mgl_MultiTexCoord
+   * @see javax.media.opengl.GL#GL_TEXTURE_COORD_ARRAY
+   * @see javax.media.opengl.GL#glEnableClientState
+   * @see javax.media.opengl.GL#glVertexPointer
+   * @see javax.media.opengl.GL#glColorPointer
+   * @see javax.media.opengl.GL#glNormalPointer
+   * @see javax.media.opengl.GL#glTexCoordPointer
+   */
+  public static String getPredefinedArrayIndexName(int glArrayIndex) {
+    switch(glArrayIndex) {
+        case GL.GL_VERTEX_ARRAY:
+            return mgl_Vertex;
+        case GL.GL_NORMAL_ARRAY:
+            return mgl_Normal;
+        case GL.GL_COLOR_ARRAY:
+            return mgl_Color;
+        case GL.GL_TEXTURE_COORD_ARRAY:
+            return mgl_MultiTexCoord;
+    }
+    return null;
+  }
+
+  /**
+   * String name for
+   * @see javax.media.opengl.GL#GL_VERTEX_ARRAY
+   */
+  public static final String mgl_Vertex = "mgl_Vertex";
+
+  /**
+   * String name for
+   * @see javax.media.opengl.GL#GL_NORMAL_ARRAY
+   */
+  public static final String mgl_Normal = "mgl_Normal";
+
+  /**
+   * String name for
+   * @see javax.media.opengl.GL#GL_COLOR_ARRAY
+   */
+  public static final String mgl_Color = "mgl_Color";
+
+  /**
+   * String name for
+   * @see javax.media.opengl.GL#GL_TEXTURE_COORD_ARRAY
+   */
+  public static final String mgl_MultiTexCoord = "mgl_MultiTexCoord" ;
+
 }
diff --git a/src/classes/javax/media/opengl/GLProfile.java b/src/classes/javax/media/opengl/GLProfile.java
index ff68a6d38..67e427f5a 100644
--- a/src/classes/javax/media/opengl/GLProfile.java
+++ b/src/classes/javax/media/opengl/GLProfile.java
@@ -212,4 +212,306 @@ public class GLProfile {
             throw new GLUnsupportedException("unsupported profile \"" + profile + "\"");
         }
   }
+
+  /** 
+   * General validation if type is a valid GL data type
+   * for the current profile
+   */
+  public static boolean isValidDataType(int type, boolean throwException) {
+    switch(type) {
+        case GL.GL_UNSIGNED_BYTE:
+        case GL.GL_BYTE:
+        case GL.GL_UNSIGNED_SHORT:
+        case GL.GL_SHORT:
+        case GL.GL_FLOAT:
+        case GL.GL_FIXED:
+            return true;
+        case javax.media.opengl.GL2ES2.GL_INT:
+        case javax.media.opengl.GL2ES2.GL_UNSIGNED_INT:
+            if( isGL2ES2() ) {
+                return true;
+            }
+        case javax.media.opengl.GL2.GL_DOUBLE:
+        case javax.media.opengl.GL2.GL_2_BYTES:
+        case javax.media.opengl.GL2.GL_3_BYTES:
+        case javax.media.opengl.GL2.GL_4_BYTES:
+            if( isGL2ES12() || isGL2() ) {
+                return true;
+            }
+    } 
+    if(throwException) {
+        throw new GLException("Illegal data type on profile "+GLProfile.getProfile()+": "+type);
+    }
+    return false;
+  }
+
+  public static boolean isValidateArrayDataType(int index, int comps, int type, 
+                                                boolean isVertexAttribPointer, boolean throwException) {
+    String indexName = GLContext.getPredefinedArrayIndexName(index);
+    if(GLProfile.isGLES1()) {
+        if(isVertexAttribPointer) {
+            if(throwException) {
+                throw new GLException("Illegal array type for "+indexName+" on profile GLES1: VertexAttribPointer");
+            }
+            return false;
+        }
+        switch(index) {
+            case GL.GL_VERTEX_ARRAY:
+            case GL.GL_TEXTURE_COORD_ARRAY:
+                switch(type) {
+                    case GL.GL_BYTE:
+                    case GL.GL_SHORT:
+                    case GL.GL_FIXED:
+                    case GL.GL_FLOAT:
+                        break;
+                    default: 
+                        if(throwException) {
+                            throw new GLException("Illegal data type for "+indexName+" on profile GLES1: "+type);
+                        }
+                        return false;
+                }
+                switch(comps) {
+                    case 0:
+                    case 2:
+                    case 3:
+                    case 4:
+                        break;
+                    default: 
+                        if(throwException) {
+                            throw new GLException("Illegal component number for "+indexName+" on profile GLES1: "+comps);
+                        }
+                        return false;
+                }
+                break;
+            case GL.GL_NORMAL_ARRAY:
+                switch(type) {
+                    case GL.GL_BYTE:
+                    case GL.GL_SHORT:
+                    case GL.GL_FIXED:
+                    case GL.GL_FLOAT:
+                        break;
+                    default: 
+                        if(throwException) {
+                            throw new GLException("Illegal data type for "+indexName+" on profile GLES1: "+type);
+                        }
+                        return false;
+                }
+                switch(comps) {
+                    case 0:
+                    case 3:
+                        break;
+                    default: 
+                        if(throwException) {
+                            throw new GLException("Illegal component number for "+indexName+" on profile GLES1: "+comps);
+                        }
+                        return false;
+                }
+                break;
+            case GL.GL_COLOR_ARRAY:
+                switch(type) {
+                    case GL.GL_UNSIGNED_BYTE:
+                    case GL.GL_FIXED:
+                    case GL.GL_FLOAT:
+                        break;
+                    default: 
+                        if(throwException) {
+                            throw new GLException("Illegal data type for "+indexName+" on profile GLES1: "+type);
+                        }
+                        return false;
+                }
+                switch(comps) {
+                    case 0:
+                    case 4:
+                        break;
+                    default: 
+                        if(throwException) {
+                            throw new GLException("Illegal component number for "+indexName+" on profile GLES1: "+comps);
+                        }
+                        return false;
+                }
+                break;
+        }
+    } else if(GLProfile.isGLES2()) {
+        // simply ignore !isVertexAttribPointer case, since it is simulated anyway ..
+
+        switch(type) {
+            case GL.GL_UNSIGNED_BYTE:
+            case GL.GL_BYTE:
+            case GL.GL_UNSIGNED_SHORT:
+            case GL.GL_SHORT:
+            case GL.GL_FLOAT:
+            case GL.GL_FIXED:
+                break;
+            default: 
+                if(throwException) {
+                    throw new GLException("Illegal data type for "+indexName+" on profile GLES2: "+type);
+                }
+                return false;
+        }
+        switch(comps) {
+            case 0:
+            case 1:
+            case 2:
+            case 3:
+            case 4:
+                break;
+            default: 
+                if(throwException) {
+                    throw new GLException("Illegal component number for "+indexName+" on profile GLES1: "+comps);
+                }
+                return false;
+        }
+    } else if(GLProfile.isGL2ES12() || GLProfile.isGL2()) {
+        if(isVertexAttribPointer) {
+            switch(index) {
+                case GL.GL_VERTEX_ARRAY:
+                case GL.GL_TEXTURE_COORD_ARRAY:
+                case GL.GL_NORMAL_ARRAY:
+                case GL.GL_COLOR_ARRAY:
+                    switch(type) {
+                        case GL.GL_UNSIGNED_BYTE:
+                        case GL.GL_BYTE:
+                        case GL.GL_UNSIGNED_SHORT:
+                        case GL.GL_SHORT:
+                        case GL.GL_FLOAT:
+                        case javax.media.opengl.GL2ES2.GL_INT:
+                        case javax.media.opengl.GL2ES2.GL_UNSIGNED_INT:
+                        case javax.media.opengl.GL2.GL_DOUBLE:
+                            break;
+                        default: 
+                            if(throwException) {
+                                throw new GLException("Illegal data type for "+indexName+" on profile GL2: "+type);
+                            }
+                            return false;
+                    }
+                    switch(comps) {
+                        case 0:
+                        case 1:
+                        case 2:
+                        case 3:
+                        case 4:
+                            break;
+                        default: 
+                            if(throwException) {
+                                throw new GLException("Illegal component number for "+indexName+" on profile GL2: "+comps);
+                            }
+                            return false;
+                    }
+                    break;
+            }
+        } else {
+            switch(index) {
+                case GL.GL_VERTEX_ARRAY:
+                    switch(type) {
+                        case GL.GL_SHORT:
+                        case GL.GL_FLOAT:
+                        case javax.media.opengl.GL2ES2.GL_INT:
+                        case javax.media.opengl.GL2.GL_DOUBLE:
+                            break;
+                        default: 
+                            if(throwException) {
+                                throw new GLException("Illegal data type for "+indexName+" on profile GL2: "+type);
+                            }
+                            return false;
+                    }
+                    switch(comps) {
+                        case 0:
+                        case 2:
+                        case 3:
+                        case 4:
+                            break;
+                        default: 
+                            if(throwException) {
+                                throw new GLException("Illegal component number for "+indexName+" on profile GL2: "+comps);
+                            }
+                            return false;
+                    }
+                    break;
+                case GL.GL_NORMAL_ARRAY:
+                    switch(type) {
+                        case GL.GL_BYTE:
+                        case GL.GL_SHORT:
+                        case GL.GL_FLOAT:
+                        case javax.media.opengl.GL2ES2.GL_INT:
+                        case javax.media.opengl.GL2.GL_DOUBLE:
+                            break;
+                        default: 
+                            if(throwException) {
+                                throw new GLException("Illegal data type for "+indexName+" on profile GL2: "+type);
+                            }
+                            return false;
+                    }
+                    switch(comps) {
+                        case 0:
+                        case 3:
+                            break;
+                        default: 
+                            if(throwException) {
+                                throw new GLException("Illegal component number for "+indexName+" on profile GLES1: "+comps);
+                            }
+                            return false;
+                    }
+                    break;
+                case GL.GL_COLOR_ARRAY:
+                    switch(type) {
+                        case GL.GL_UNSIGNED_BYTE:
+                        case GL.GL_BYTE:
+                        case GL.GL_UNSIGNED_SHORT:
+                        case GL.GL_SHORT:
+                        case GL.GL_FLOAT:
+                        case javax.media.opengl.GL2ES2.GL_INT:
+                        case javax.media.opengl.GL2ES2.GL_UNSIGNED_INT:
+                        case javax.media.opengl.GL2.GL_DOUBLE:
+                            break;
+                        default: 
+                            if(throwException) {
+                                throw new GLException("Illegal data type for "+indexName+" on profile GL2: "+type);
+                            }
+                            return false;
+                    }
+                    switch(comps) {
+                        case 0:
+                        case 3:
+                        case 4:
+                            break;
+                        default: 
+                            if(throwException) {
+                                throw new GLException("Illegal component number for "+indexName+" on profile GL2: "+comps);
+                            }
+                            return false;
+                    }
+                    break;
+                case GL.GL_TEXTURE_COORD_ARRAY:
+                    switch(type) {
+                        case GL.GL_SHORT:
+                        case GL.GL_FLOAT:
+                        case javax.media.opengl.GL2ES2.GL_INT:
+                        case javax.media.opengl.GL2.GL_DOUBLE:
+                            break;
+                        default: 
+                            if(throwException) {
+                                throw new GLException("Illegal data type for "+indexName+" on profile GL2: "+type);
+                            }
+                            return false;
+                    }
+                    switch(comps) {
+                        case 0:
+                        case 1:
+                        case 2:
+                        case 3:
+                        case 4:
+                            break;
+                        default: 
+                            if(throwException) {
+                                throw new GLException("Illegal component number for "+indexName+" on profile GL2: "+comps);
+                            }
+                            return false;
+                    }
+                    break;
+            }
+        }
+    }
+    return true;
+  }
+
 }
diff --git a/src/classes/javax/media/opengl/GLUniformData.java b/src/classes/javax/media/opengl/GLUniformData.java
new file mode 100644
index 000000000..929a59a2a
--- /dev/null
+++ b/src/classes/javax/media/opengl/GLUniformData.java
@@ -0,0 +1,159 @@
+
+package javax.media.opengl;
+
+import java.nio.*;
+
+public class GLUniformData {
+
+    /**
+     * int atom
+     *
+     * Number of objects is 1
+     *
+     * @arg components number of elements of one object, ie 4 for GL_FLOAT_VEC4,
+     */
+    public GLUniformData(String name, int val) {
+        init(name, 1, new Integer(val));
+    }
+
+    /**
+     * float atom
+     *
+     * Number of objects is 1
+     *
+     * @arg components number of elements of one object, ie 4 for GL_FLOAT_VEC4,
+     */
+    public GLUniformData(String name, float val) {
+        init(name, 1, new Float(val));
+    }
+
+    /**
+     * Multiple IntBuffer Vector
+     *
+     * Number of objects is calculated by data.limit()/components
+     *
+     * @arg components number of elements of one object, ie 4 for GL_FLOAT_VEC4,
+     */
+    public GLUniformData(String name, int components, IntBuffer data) {
+        init(name, components, data);
+    }
+
+    /**
+     * Multiple FloatBuffer Vector
+     *
+     * Number of objects is calculated by data.limit()/components
+     *
+     * @arg components number of elements of one object, ie 4 for GL_FLOAT_VEC4,
+     */
+    public GLUniformData(String name, int components, FloatBuffer data) {
+        init(name, components, data);
+    }
+
+    /**
+     * Multiple FloatBuffer Matrix
+     *
+     * Number of objects is calculated by data.limit()/(rows*columns)
+     *
+     * @arg rows the matrix rows
+     * @arg column the matrix column
+     */
+    public GLUniformData(String name, int rows, int columns, FloatBuffer data) {
+        init(name, rows, columns, data);
+    }
+
+    public void setData(int data) { init(new Integer(data)); }
+    public void setData(float data) { init(new Float(data)); }
+    public void setData(IntBuffer data) { init(data); }
+    public void setData(FloatBuffer data) { init(data); }
+
+    public int       intValue()   { return ((Integer)data).intValue(); };
+    public float     floatValue() { return ((Float)data).floatValue(); };
+    public IntBuffer intBufferValue()   { return (IntBuffer)data; };
+    public FloatBuffer floatBufferValue() { return (FloatBuffer)data; };
+
+    public String toString() {
+      return "GLUniformData[name "+name+
+                       ", location "+location+ 
+                       ", size "+rows+"*"+columns+
+                       ", count "+count+ 
+                       ", matrix "+isMatrix+ 
+                       ", data "+data+ 
+                       "]";
+    }
+
+    private void init(String name, int rows, int columns, Object data) {
+        if( 2>rows || rows>4 || 2>columns || columns>4 ) {
+            throw new GLException("rowsXcolumns must be within [2..4]X[2..4], is: "+rows+"X"+columns);
+        }
+        this.name=name;
+        this.rows=rows;
+        this.columns=columns;
+        this.isMatrix=true;
+        this.location=-1;
+        init(data);
+    }
+
+    private void init(String name, int components, Object data) {
+        if( 1>components || components>4 ) {
+            throw new GLException("components must be within [1..4], is: "+components);
+        }
+        this.name=name;
+        this.columns=components;
+        this.rows=1;
+        this.isMatrix=false;
+        this.location=-1;
+        init(data);
+    }
+
+    private void init(Object data) {
+        if(data instanceof Buffer) {
+            int sz = rows*columns;
+            Buffer buffer = (Buffer)data;
+            if(buffer.limit()<sz || 0!=buffer.limit()%sz) {
+                throw new GLException("data buffer size invalid: new buffer limit: "+buffer.limit()+"\n\t"+this);
+            }
+            this.count=buffer.limit()/(rows*columns);
+        } else {
+            if(isMatrix) {
+                throw new GLException("Atom type not allowed for matrix : "+this);
+            }
+            this.count=1;
+        }
+        this.data=data;
+    }
+
+    public String getName() { return name; }
+
+    public int getLocation() { return location; }
+
+    /**
+     * Sets the determined location of the shader uniform
+     * This is usually done within ShaderState.
+     *
+     * @see javax.media.opengl.util.glsl.ShaderState#glUniform(GL2ES2, GLUniformData)
+     */
+    public void setLocation(int location) { this.location=location; }
+
+    public Object getObject() {
+        return data;
+    }
+    public Buffer getBuffer() {
+        return (data instanceof Buffer)?(Buffer)data:null;
+    }
+    public boolean isBuffer() {
+        return (data instanceof Buffer);
+    }
+    public boolean isMatrix() { return isMatrix; }
+
+    public int     count() { return count; }
+    public int     components() { return rows*columns; }
+    public int     rows() { return rows; }
+    public int     columns() { return columns; }
+
+    private String name;
+    private int    location;
+    private int    rows, columns;
+    private int    count;
+    private Object data;
+    private boolean isMatrix;
+}
diff --git a/src/classes/javax/media/opengl/util/ImmModeSink.java b/src/classes/javax/media/opengl/util/ImmModeSink.java
index 459372d94..5de9df99a 100644
--- a/src/classes/javax/media/opengl/util/ImmModeSink.java
+++ b/src/classes/javax/media/opengl/util/ImmModeSink.java
@@ -2,6 +2,7 @@
 package javax.media.opengl.util;
 
 import javax.media.opengl.*;
+import com.sun.opengl.impl.GLReflection;
 import java.nio.*;
 import java.util.Iterator;
 import java.util.ArrayList;
@@ -10,24 +11,39 @@ public class ImmModeSink {
 
   public static final boolean DEBUG_BEGIN_END = false;
   public static final boolean DEBUG_DRAW = false;
-  public static final boolean FLOAT2FIXED = false;
 
-  public static final int GL_QUADS      = 0x0007;
+  // public static final int GL_QUADS      = 0x0007; // Needs data manipulation
   public static final int GL_QUAD_STRIP = 0x0008;
   public static final int GL_POLYGON    = 0x0009;
 
-  public ImmModeSink(int glDataType, int glDrawUsage,
-                     int vComps, int nComps, int cComps, int tComps, int initialSize) {
-
-    vboSet = new  VBOSet(glDataType, glDrawUsage, vComps, nComps, cComps, tComps, initialSize);
-    this.vboSetList   = new ArrayList();
+  /**
+   * Uses a GL2ES1, or ES2 fixed function emulation immediate mode sink
+   */
+  public static ImmModeSink createFixed(int glBufferUsage, int initialSize,
+                                        int vComps, int vDataType,
+                                        int cComps, int cDataType, 
+                                        int nComps, int nDataType, 
+                                        int tComps, int tDataType) {
+    return new ImmModeSink(glBufferUsage, initialSize, 
+                           vComps, vDataType, cComps, cDataType, nComps, nDataType, tComps, tDataType, false);
   }
 
-  private void destroyList(GL gl) {
-    for(Iterator i=vboSetList.iterator(); i.hasNext() ; ) {
-        ((VBOSet)i.next()).destroy(gl);
-    }
-    vboSetList.clear();
+  /**
+   * Uses a GL2ES2 GLSL shader immediate mode sink.
+   * To issue the draw() command,
+   * a ShaderState must be current, using ShaderState.glUseProgram().
+   *
+   * @see #draw(GL, boolean)
+   * @see javax.media.opengl.util.glsl.ShaderState#glUseProgram(GL2ES2, boolean)
+   * @see javax.media.opengl.util.glsl.ShaderState#getCurrent()
+   */
+  public static ImmModeSink createGLSL(int glBufferUsage, int initialSize,
+                                       int vComps, int vDataType,
+                                       int cComps, int cDataType, 
+                                       int nComps, int nDataType, 
+                                       int tComps, int tDataType) {
+    return new ImmModeSink(glBufferUsage, initialSize, 
+                           vComps, vDataType, cComps, cDataType, nComps, nDataType, tComps, tDataType, true);
   }
 
   public void destroy(GL gl) {
@@ -46,9 +62,20 @@ public class ImmModeSink {
   }
 
   public String toString() {
-    return "ImmModeSink[listsz: "+vboSetList.size()+
-                       ",\n"+vboSet+
-                       "]";
+    StringBuffer sb = new StringBuffer("ImmModeSink[");
+    sb.append(",\n\tVBO list: "+vboSetList.size()+" [");
+    for(Iterator i=vboSetList.iterator(); i.hasNext() ; ) {
+        sb.append("\n\t");
+        sb.append( (VBOSet)i.next() );
+    }
+    if(vboSetList.size()>0) {
+        sb.append("\n\t],\nVBO current: NOP]");
+    } else {
+        sb.append("\n\t],\nVBO current: \n");
+        sb.append(vboSet);
+        sb.append("\n]");
+    }
+    return sb.toString();
   }
 
   public void draw(GL gl, boolean disableBufferAfterDraw) {
@@ -58,7 +85,18 @@ public class ImmModeSink {
     }
     int n=0;
     for(Iterator i=vboSetList.iterator(); i.hasNext() ; n++) {
-        ((VBOSet)i.next()).draw(gl, disableBufferAfterDraw, n);
+        ((VBOSet)i.next()).draw(gl, null, disableBufferAfterDraw, n);
+    }
+  }
+
+  public void draw(GL gl, Buffer indices, boolean disableBufferAfterDraw) {
+    if(DEBUG_DRAW) {
+        Exception e = new Exception("ImmModeSink.draw(disableBufferAfterDraw: "+disableBufferAfterDraw+"):\n\t"+this);
+        e.printStackTrace();
+    }
+    int n=0;
+    for(Iterator i=vboSetList.iterator(); i.hasNext() ; n++) {
+        ((VBOSet)i.next()).draw(gl, indices, disableBufferAfterDraw, n);
     }
   }
 
@@ -69,9 +107,10 @@ public class ImmModeSink {
     }
     vboSet.modeOrig = mode;
     switch(mode) {
-        case GL_QUADS:
-            mode=GL.GL_TRIANGLE_STRIP;
-            break;
+        // Needs data manipulation ..
+        //case GL_QUADS:
+        //    mode=GL.GL_LINES;
+        //    break;
         case GL_QUAD_STRIP:
             mode=GL.GL_TRIANGLE_STRIP;
             break;
@@ -84,17 +123,25 @@ public class ImmModeSink {
   }
 
   public final void glEnd(GL gl) {
-      glEnd(gl, true);
+      glEnd(gl, null, true);
   }
 
   public void glEnd(GL gl, boolean immediateDraw) {
+      glEnd(gl, null, immediateDraw);
+  }
+
+  public final void glEnd(GL gl, Buffer indices) {
+      glEnd(gl, indices, true);
+  }
+
+  private void glEnd(GL gl, Buffer indices, boolean immediateDraw) {
     if(DEBUG_BEGIN_END) {
         Exception e = new Exception("ImmModeSink START glEnd(immediate: "+immediateDraw+"):\n\t"+this);
         e.printStackTrace();
     }
     if(immediateDraw) {
         vboSet.seal(gl, false);
-        vboSet.draw(gl, true, -1);
+        vboSet.draw(gl, indices, true, -1);
         reset(gl);
     } else {
         vboSet.seal(gl, true);
@@ -103,6 +150,9 @@ public class ImmModeSink {
     }
   }
 
+  public void glVertexv(Buffer v) {
+    vboSet.glVertexv(v);
+  }
   public final void glVertex2f(float x, float y) {
     vboSet.glVertex2f(x,y);
   }
@@ -111,14 +161,27 @@ public class ImmModeSink {
     vboSet.glVertex3f(x,y,z);
   }
 
+  public void glNormalv(Buffer v) {
+    vboSet.glNormalv(v);
+  }
   public final void glNormal3f(float x, float y, float z) {
     vboSet.glNormal3f(x,y,z);
   }
 
+  public void glColorv(Buffer v) {
+    vboSet.glColorv(v);
+  }
   public final void glColor3f(float x, float y, float z) {
     vboSet.glColor3f(x,y,z);
   }
 
+  public final void glColor4f(float x, float y, float z, float a) {
+    vboSet.glColor4f(x,y,z, a);
+  }
+
+  public void glTexCoordv(Buffer v) {
+    vboSet.glTexCoordv(v);
+  }
   public final void glTexCoord2f(float x, float y) {
     vboSet.glTexCoord2f(x,y);
   }
@@ -127,29 +190,114 @@ public class ImmModeSink {
     vboSet.glTexCoord3f(x,y,z);
   }
 
+  public final void glVertex2s(short x, short y) {
+    vboSet.glVertex2s(x,y);
+  }
+
+  public final void glVertex3s(short x, short y, short z) {
+    vboSet.glVertex3s(x,y,z);
+  }
+
+  public final void glNormal3s(short x, short y, short z) {
+    vboSet.glNormal3s(x,y,z);
+  }
+
+  public final void glColor3s(short x, short y, short z) {
+    vboSet.glColor3s(x,y,z);
+  }
+
+  public final void glColor4s(short x, short y, short z, short a) {
+    vboSet.glColor4s(x,y,z,a);
+  }
+
+  public final void glTexCoord2s(short x, short y) {
+    vboSet.glTexCoord2s(x,y);
+  }
+
+  public final void glTexCoord3s(short x, short y, short z) {
+    vboSet.glTexCoord3s(x,y,z);
+  }
+
+  public final void glVertex2b(byte x, byte y) {
+    vboSet.glVertex2b(x,y);
+  }
+
+  public final void glVertex3b(byte x, byte y, byte z) {
+    vboSet.glVertex3b(x,y,z);
+  }
+
+  public final void glNormal3b(byte x, byte y, byte z) {
+    vboSet.glNormal3b(x,y,z);
+  }
+
+  public final void glColor3b(byte x, byte y, byte z) {
+    vboSet.glColor3b(x,y,z);
+  }
+
+  public final void glColor4b(byte x, byte y, byte z, byte a) {
+    vboSet.glColor4b(x,y,z,a);
+  }
+
+  public final void glTexCoord2b(byte x, byte y) {
+    vboSet.glTexCoord2b(x,y);
+  }
+
+  public final void glTexCoord3b(byte x, byte y, byte z) {
+    vboSet.glTexCoord3b(x,y,z);
+  }
+
+  protected ImmModeSink(int glBufferUsage, int initialSize,
+                        int vComps, int vDataType,
+                        int cComps, int cDataType, 
+                        int nComps, int nDataType, 
+                        int tComps, int tDataType, boolean useGLSL) {
+    if(useGLSL && !GLProfile.isGL2ES2()) {
+        throw new GLException("ImmModeSink GLSL usage not supported for profile: "+GLProfile.getProfile());
+    }
+    vboSet = new  VBOSet(glBufferUsage, initialSize, 
+                         vComps, vDataType, cComps, cDataType, nComps, nDataType, tComps, tDataType, useGLSL);
+    this.vboSetList   = new ArrayList();
+  }
+
+  private void destroyList(GL gl) {
+    for(Iterator i=vboSetList.iterator(); i.hasNext() ; ) {
+        ((VBOSet)i.next()).destroy(gl);
+    }
+    vboSetList.clear();
+  }
+
   private VBOSet vboSet;
   private ArrayList vboSetList;
 
   protected static class VBOSet {
-    protected VBOSet(int glDataType, int glDrawUsage,
-                   int vComps, int nComps, int cComps, int tComps, int initialSize) {
-        nComps = 0;
-        tComps = 0;
-        if(FLOAT2FIXED && glDataType==GL.GL_FLOAT) {
-            glDataType=GL2ES1.GL_FIXED;
-        }
-        this.glDataType=glDataType;
-        this.glDrawUsage=glDrawUsage;
+    protected VBOSet (int glBufferUsage, int initialSize,
+                      int vComps, int vDataType,
+                      int cComps, int cDataType, 
+                      int nComps, int nDataType, 
+                      int tComps, int tDataType, boolean useGLSL) {
+        this.glBufferUsage=glBufferUsage;
+        this.initialSize=initialSize;
+        this.vDataType=vDataType;
         this.vComps=vComps;
-        this.nComps=nComps;
+        this.cDataType=cDataType;
         this.cComps=cComps;
+        this.nDataType=nDataType;
+        this.nComps=nComps;
+        this.tDataType=tDataType;
         this.tComps=tComps;
-        this.initialSize=initialSize;
-
-        this.vertexVBO   = VBOBufferDraw.create(GL2ES1.GL_VERTEX_ARRAY,        glDataType, glDrawUsage, vComps, initialSize);
-        this.normalVBO   = VBOBufferDraw.create(GL2ES1.GL_NORMAL_ARRAY,        glDataType, glDrawUsage, nComps, initialSize);
-        this.colorVBO    = VBOBufferDraw.create(GL2ES1.GL_COLOR_ARRAY,         glDataType, glDrawUsage, cComps, initialSize);
-        this.texcoordVBO = VBOBufferDraw.create(GL2ES1.GL_TEXTURE_COORD_ARRAY, glDataType, glDrawUsage, tComps, initialSize);
+        this.useGLSL=useGLSL;
+
+        if(!useGLSL) {
+          this.vertexVBO   = GLArrayDataServer.createFixed(GL.GL_VERTEX_ARRAY, null, vComps, vDataType, false, initialSize, glBufferUsage);
+          this.colorVBO    = GLArrayDataServer.createFixed(GL.GL_COLOR_ARRAY,  null, cComps, cDataType, false, initialSize, glBufferUsage);
+          this.normalVBO   = GLArrayDataServer.createFixed(GL.GL_NORMAL_ARRAY, null, nComps, nDataType, false, initialSize, glBufferUsage);
+          this.texcoordVBO = GLArrayDataServer.createFixed(GL.GL_TEXTURE_COORD_ARRAY, null, tComps, tDataType, false, initialSize, glBufferUsage);
+        } else {
+          this.vertexVBO   = GLArrayDataServer.createGLSL(GLContext.mgl_Vertex, vComps, vDataType, false, initialSize, glBufferUsage);
+          this.colorVBO    = GLArrayDataServer.createGLSL(GLContext.mgl_Color,  cComps, cDataType, false, initialSize, glBufferUsage);
+          this.normalVBO   = GLArrayDataServer.createGLSL(GLContext.mgl_Normal, nComps, nDataType, false, initialSize, glBufferUsage);
+          this.texcoordVBO = GLArrayDataServer.createGLSL(GLContext.mgl_MultiTexCoord, tComps, tDataType, false, initialSize, glBufferUsage);
+        }
 
         this.sealed=false;
         this.mode = -1;
@@ -157,7 +305,8 @@ public class ImmModeSink {
     }
 
     protected final VBOSet regenerate() {
-        return new VBOSet(glDataType, glDrawUsage, vComps, nComps, cComps, tComps, initialSize);
+        return new VBOSet(glBufferUsage, initialSize, 
+                          vComps, vDataType, cComps, cDataType, nComps, nDataType, tComps, tDataType, useGLSL);
     }
 
     protected void destroy(GL gl) {
@@ -186,10 +335,10 @@ public class ImmModeSink {
         return "VBOSet[mode "+mode+ 
                        ", modeOrig "+modeOrig+ 
                        ", sealed "+sealed+ 
-                       ",\n\t vertexVBO "+vertexVBO+
-                       ",\n\t normalVBO "+normalVBO+
-                       ",\n\t colorVBO "+colorVBO+
-                       ",\n\t texcoordVBO "+texcoordVBO+
+                       ",\n\t"+vertexVBO+
+                       ",\n\t"+normalVBO+
+                       ",\n\t"+colorVBO+
+                       ",\n\t"+texcoordVBO+
                        "]";
     }
 
@@ -220,35 +369,60 @@ public class ImmModeSink {
         checkSeal(false);
         sealed = true;
 
-        vertexVBO.seal(gl, disableBufferAfterSeal);
-        normalVBO.seal(gl, disableBufferAfterSeal);
-        colorVBO.seal(gl, disableBufferAfterSeal);
-        texcoordVBO.seal(gl, disableBufferAfterSeal);
+        vertexVBO.seal(gl, true);
+        normalVBO.seal(gl, true);
+        colorVBO.seal(gl, true);
+        texcoordVBO.seal(gl, true);
+
+        if(disableBufferAfterSeal) {
+            vertexVBO.enableBuffer(gl, false);
+            normalVBO.enableBuffer(gl, false);
+            colorVBO.enableBuffer(gl, false);
+            texcoordVBO.enableBuffer(gl, false);
+        }
     }
 
-    protected void draw(GL gl, boolean disableBufferAfterDraw, int i)
+    protected void draw(GL gl, Buffer indices, boolean disableBufferAfterDraw, int i)
     {
         if(DEBUG_DRAW) {
             Exception e = new Exception("ImmModeSink.draw["+i+"](disableBufferAfterDraw: "+disableBufferAfterDraw+"):\n\t"+this);
             e.printStackTrace();
         }
-        vertexVBO.enableBuffer(gl);
-        normalVBO.enableBuffer(gl);
-        colorVBO.enableBuffer(gl);
-        texcoordVBO.enableBuffer(gl);
+        vertexVBO.enableBuffer(gl, true);
+        normalVBO.enableBuffer(gl, true);
+        colorVBO.enableBuffer(gl, true);
+        texcoordVBO.enableBuffer(gl, true);
 
         if (vertexVBO.getBuffer()!=null) {
-            gl.glDrawArrays(mode, 0, vertexVBO.getVerticeNumber());
+            if(null==indices) {
+                gl.glDrawArrays(mode, 0, vertexVBO.getVerticeNumber());
+            } else {
+                Class clazz = indices.getClass();
+                int type=-1;
+                if(GLReflection.instanceOf(clazz, ByteBuffer.class.getName())) {
+                    type =  GL.GL_UNSIGNED_BYTE;
+                } else if(GLReflection.instanceOf(clazz, ShortBuffer.class.getName())) {
+                    type =  GL.GL_UNSIGNED_SHORT;
+                }
+                if(0>type) {
+                    throw new GLException("Given Buffer Class not supported: "+clazz+", should be ubyte or ushort:\n\t"+this);
+                }
+                gl.glDrawElements(mode, indices.remaining(), type, indices);
+            }
         }
 
         if(disableBufferAfterDraw) {
-            vertexVBO.disableBuffer(gl);
-            normalVBO.disableBuffer(gl);
-            colorVBO.disableBuffer(gl);
-            texcoordVBO.disableBuffer(gl);
+            vertexVBO.enableBuffer(gl, false);
+            normalVBO.enableBuffer(gl, false);
+            colorVBO.enableBuffer(gl, false);
+            texcoordVBO.enableBuffer(gl, false);
         }
     }
 
+    protected void glVertexv(Buffer v) {
+        checkSeal(false);
+        vertexVBO.put(v);
+    }
     protected void glVertex2f(float x, float y) {
         checkSeal(false);
         vertexVBO.putf(x);
@@ -256,7 +430,6 @@ public class ImmModeSink {
             vertexVBO.putf(y);
         vertexVBO.padding(2);
     }
-
     protected void glVertex3f(float x, float y, float z) {
         checkSeal(false);
         vertexVBO.putf(x);
@@ -267,6 +440,10 @@ public class ImmModeSink {
         vertexVBO.padding(3);
     }
 
+    protected void glNormalv(Buffer v) {
+        checkSeal(false);
+        normalVBO.put(v);
+    }
     protected void glNormal3f(float x, float y, float z) {
         checkSeal(false);
         normalVBO.putf(x);
@@ -277,6 +454,10 @@ public class ImmModeSink {
         normalVBO.padding(3);
     }
 
+    protected void glColorv(Buffer v) {
+        checkSeal(false);
+        colorVBO.put(v);
+    }
     protected void glColor3f(float x, float y, float z) {
         checkSeal(false);
         colorVBO.putf(x);
@@ -286,7 +467,22 @@ public class ImmModeSink {
             colorVBO.putf(z);
         colorVBO.padding(3);
     }
+    protected void glColor4f(float x, float y, float z, float a) {
+        checkSeal(false);
+        colorVBO.putf(x);
+        if(colorVBO.getComponents()>1) 
+            colorVBO.putf(y);
+        if(colorVBO.getComponents()>2) 
+            colorVBO.putf(z);
+        if(colorVBO.getComponents()>3) 
+            colorVBO.putf(a);
+        colorVBO.padding(4);
+    }
 
+    protected void glTexCoordv(Buffer v) {
+        checkSeal(false);
+        texcoordVBO.put(v);
+    }
     protected void glTexCoord2f(float x, float y) {
         checkSeal(false);
         texcoordVBO.putf(x);
@@ -294,7 +490,6 @@ public class ImmModeSink {
             texcoordVBO.putf(y);
         texcoordVBO.padding(2);
     }
-
     protected void glTexCoord3f(float x, float y, float z) {
         checkSeal(false);
         texcoordVBO.putf(x);
@@ -305,13 +500,145 @@ public class ImmModeSink {
         texcoordVBO.padding(3);
     }
 
-    VBOBufferDraw vertexVBO;
-    VBOBufferDraw normalVBO;
-    VBOBufferDraw colorVBO;
-    VBOBufferDraw texcoordVBO;
+    protected void glVertex2s(short x, short y) {
+        checkSeal(false);
+        vertexVBO.puts(x);
+        if(vertexVBO.getComponents()>1) 
+            vertexVBO.puts(y);
+        vertexVBO.padding(2);
+    }
+    protected void glVertex3s(short x, short y, short z) {
+        checkSeal(false);
+        vertexVBO.puts(x);
+        if(vertexVBO.getComponents()>1) 
+            vertexVBO.puts(y);
+        if(vertexVBO.getComponents()>2) 
+            vertexVBO.puts(z);
+        vertexVBO.padding(3);
+    }
+
+    protected void glNormal3s(short x, short y, short z) {
+        checkSeal(false);
+        normalVBO.puts(x);
+        if(normalVBO.getComponents()>1) 
+            normalVBO.puts(y);
+        if(normalVBO.getComponents()>2) 
+            normalVBO.puts(z);
+        normalVBO.padding(3);
+    }
+
+    protected void glColor3s(short x, short y, short z) {
+        checkSeal(false);
+        colorVBO.puts(x);
+        if(colorVBO.getComponents()>1) 
+            colorVBO.puts(y);
+        if(colorVBO.getComponents()>2) 
+            colorVBO.puts(z);
+        colorVBO.padding(3);
+    }
+    protected void glColor4s(short x, short y, short z, short a) {
+        checkSeal(false);
+        colorVBO.puts(x);
+        if(colorVBO.getComponents()>1) 
+            colorVBO.puts(y);
+        if(colorVBO.getComponents()>2) 
+            colorVBO.puts(z);
+        if(colorVBO.getComponents()>3) 
+            colorVBO.puts(a);
+        colorVBO.padding(4);
+    }
+
+    protected void glTexCoord2s(short x, short y) {
+        checkSeal(false);
+        texcoordVBO.puts(x);
+        if(texcoordVBO.getComponents()>1) 
+            texcoordVBO.puts(y);
+        texcoordVBO.padding(2);
+    }
+    protected void glTexCoord3s(short x, short y, short z) {
+        checkSeal(false);
+        texcoordVBO.puts(x);
+        if(texcoordVBO.getComponents()>1) 
+            texcoordVBO.puts(y);
+        if(texcoordVBO.getComponents()>2) 
+            texcoordVBO.puts(z);
+        texcoordVBO.padding(3);
+    }
+
+    protected void glVertex2b(byte x, byte y) {
+        checkSeal(false);
+        vertexVBO.putb(x);
+        if(vertexVBO.getComponents()>1) 
+            vertexVBO.putb(y);
+        vertexVBO.padding(2);
+    }
+    protected void glVertex3b(byte x, byte y, byte z) {
+        checkSeal(false);
+        vertexVBO.putb(x);
+        if(vertexVBO.getComponents()>1) 
+            vertexVBO.putb(y);
+        if(vertexVBO.getComponents()>2) 
+            vertexVBO.putb(z);
+        vertexVBO.padding(3);
+    }
+
+    protected void glNormal3b(byte x, byte y, byte z) {
+        checkSeal(false);
+        normalVBO.putb(x);
+        if(normalVBO.getComponents()>1) 
+            normalVBO.putb(y);
+        if(normalVBO.getComponents()>2) 
+            normalVBO.putb(z);
+        normalVBO.padding(3);
+    }
+
+    protected void glColor3b(byte x, byte y, byte z) {
+        checkSeal(false);
+        colorVBO.putb(x);
+        if(colorVBO.getComponents()>1) 
+            colorVBO.putb(y);
+        if(colorVBO.getComponents()>2) 
+            colorVBO.putb(z);
+        colorVBO.padding(3);
+    }
+    protected void glColor4b(byte x, byte y, byte z, byte a) {
+        checkSeal(false);
+        colorVBO.putb(x);
+        if(colorVBO.getComponents()>1) 
+            colorVBO.putb(y);
+        if(colorVBO.getComponents()>2) 
+            colorVBO.putb(z);
+        if(colorVBO.getComponents()>3) 
+            colorVBO.putb(a);
+        colorVBO.padding(4);
+    }
+    protected void glTexCoord2b(byte x, byte y) {
+        checkSeal(false);
+        texcoordVBO.putb(x);
+        if(texcoordVBO.getComponents()>1) 
+            texcoordVBO.putb(y);
+        texcoordVBO.padding(2);
+    }
+
+    protected void glTexCoord3b(byte x, byte y, byte z) {
+        checkSeal(false);
+        texcoordVBO.putb(x);
+        if(texcoordVBO.getComponents()>1) 
+            texcoordVBO.putb(y);
+        if(texcoordVBO.getComponents()>2) 
+            texcoordVBO.putb(z);
+        texcoordVBO.padding(3);
+    }
+
+    GLArrayDataServer vertexVBO;
+    GLArrayDataServer normalVBO;
+    GLArrayDataServer colorVBO;
+    GLArrayDataServer texcoordVBO;
     int mode, modeOrig;
-    int glDataType, glDrawUsage, vComps, nComps, cComps, tComps, initialSize;
-    boolean sealed;
+    int glBufferUsage, initialSize;
+    int vComps,    cComps,    nComps,    tComps;
+    int vDataType, cDataType, nDataType, tDataType;
+    boolean sealed, useGLSL;
   }
 
 }
diff --git a/src/classes/javax/media/opengl/util/PMVMatrix.java b/src/classes/javax/media/opengl/util/PMVMatrix.java
index 4e8693be0..37472dfe6 100755
--- a/src/classes/javax/media/opengl/util/PMVMatrix.java
+++ b/src/classes/javax/media/opengl/util/PMVMatrix.java
@@ -9,55 +9,54 @@ import java.util.List;
 
 public class PMVMatrix {
 
-    protected ProjectFloat pvmProjectf = null;
-    protected FloatBuffer matrixPMV, matrixP, matrixMV;
-    protected FloatBuffer matrixTemp, matrixTrans, matrixRot, matrixScale, matrixOrtho, matrixPersp, matrixFrustum;
-    protected float[] vec3f;
-    protected List/*FloatBuffer*/ matrixPStack, matrixMVStack;
-    protected int matrixMode = GL.GL_MODELVIEW;
-    protected boolean modifiedPMV = false;
-
     public PMVMatrix() {
-          pvmProjectf = new ProjectFloat();
+          projectFloat = new ProjectFloat();
+
+          matrixIdent = BufferUtil.newFloatBuffer(1*16);
+          projectFloat.gluMakeIdentityf(matrixIdent);
+          matrixIdent.rewind();
+
+          matrixPMvMviT = BufferUtil.newFloatBuffer(4*16);     // grouping P  + Mv + Mvi + MviT
+          matrixPMvMvi = slice(matrixPMvMviT, 0*16, 3*16);     // grouping P  + Mv + Mvi
+          matrixPMv    = slice(matrixPMvMviT, 0*16, 2*16);     // grouping P  + Mv
+          matrixP      = slice(matrixPMvMviT, 0*16, 1*16);
+          matrixMv     = slice(matrixPMvMviT, 1*16, 1*16);
+          matrixMvi    = slice(matrixPMvMviT, 2*16, 1*16);
+          matrixMvit   = slice(matrixPMvMviT, 3*16, 1*16);
+          matrixPMvMviT.rewind();
 
-          matrixPMV = BufferUtil.newFloatBuffer(2*16);
-          matrixP  = slice(matrixPMV, 0*16, 16);
-          matrixMV = slice(matrixPMV, 1*16, 16);
-          matrixPMV.rewind();
+          matrixMvit3 = BufferUtil.newFloatBuffer(3*3);
 
-          FloatBuffer buf = BufferUtil.newFloatBuffer(7*16);
+          FloatBuffer buf = BufferUtil.newFloatBuffer(6*16);
 
-          matrixTemp=slice(buf, 0*16, 16);
+          matrixMult=slice(buf, 0*16, 16);
 
           matrixTrans=slice(buf, 1*16, 16);
-          pvmProjectf.gluMakeIdentityf(matrixTrans);
+          projectFloat.gluMakeIdentityf(matrixTrans);
 
           matrixRot=slice(buf, 2*16, 16);
-          pvmProjectf.gluMakeIdentityf(matrixRot);
+          projectFloat.gluMakeIdentityf(matrixRot);
 
           matrixScale=slice(buf, 3*16, 16);
-          pvmProjectf.gluMakeIdentityf(matrixScale);
+          projectFloat.gluMakeIdentityf(matrixScale);
 
           matrixOrtho=slice(buf, 4*16, 16);
-          pvmProjectf.gluMakeIdentityf(matrixOrtho);
+          projectFloat.gluMakeIdentityf(matrixOrtho);
 
           matrixFrustum=slice(buf, 5*16, 16);
-          pvmProjectf.gluMakeZero(matrixFrustum);
-
-          matrixPersp=slice(buf, 6*16, 16);
-          pvmProjectf.gluMakeIdentityf(matrixPersp);
+          projectFloat.gluMakeZero(matrixFrustum);
 
           vec3f=new float[3];
 
           matrixPStack = new ArrayList();
-          matrixMVStack= new ArrayList();
+          matrixMvStack= new ArrayList();
 
           // default values and mode
           glMatrixMode(GL.GL_PROJECTION);
           glLoadIdentity();
           glMatrixMode(GL.GL_MODELVIEW);
           glLoadIdentity();
-          modifiedPMV = true;
+          modified = true;
     }
 
     private static FloatBuffer slice(FloatBuffer buf, int pos, int len) {
@@ -67,11 +66,16 @@ public class PMVMatrix {
     }
 
     public boolean isDirty() {
-        return modifiedPMV;
+        return modified;
     }
 
-    public void clear() {
-        modifiedPMV=false;
+    public boolean update() {
+        boolean res = modified;
+        if(res) {
+            setMviMvit();
+            modified=false;
+        }
+        return res;
     }
 
     public final int  glGetMatrixMode() {
@@ -89,8 +93,24 @@ public class PMVMatrix {
         matrixMode = matrixName;
     }
 
-    public final FloatBuffer glGetPMVMatrixf() {
-        return matrixPMV;
+    public final FloatBuffer glGetPMvMviTMatrixf() {
+        return matrixPMvMviT;
+    }
+
+    public final FloatBuffer glGetPMvMviMatrixf() {
+        return matrixPMvMvi;
+    }
+
+    public final FloatBuffer glGetPMvMatrixf() {
+        return matrixPMv;
+    }
+
+    public final FloatBuffer glGetMviMatrixf() {
+        return matrixMvi;
+    }
+
+    public final FloatBuffer glGetNormalMatrixf() {
+        return matrixMvit3;
     }
 
     public final FloatBuffer glGetMatrixf() {
@@ -99,82 +119,116 @@ public class PMVMatrix {
 
     public final FloatBuffer glGetMatrixf(int matrixName) {
         if(matrixName==GL.GL_MODELVIEW) {
-            return matrixMV;
+            return matrixMv;
         } else if(matrixName==GL.GL_PROJECTION) {
             return matrixP;
         }
         return null;
     }
 
+    public void glLoadMatrixf(float[] values, int offset) {
+        int len = values.length-offset;
+        if(matrixMode==GL.GL_MODELVIEW) {
+            matrixMv.clear();
+            matrixMv.put(values, offset, len);
+            matrixMv.rewind();
+        } else if(matrixMode==GL.GL_PROJECTION) {
+            matrixP.clear();
+            matrixP.put(values, offset, len);
+            matrixP.rewind();
+        } 
+        modified = true;
+    }
+
     public void glLoadMatrixf(java.nio.FloatBuffer m) {
+        int spos = m.position();
         if(matrixMode==GL.GL_MODELVIEW) {
-            matrixMV.clear();
-            matrixMV.put(m);
-            matrixMV.rewind();
+            matrixMv.clear();
+            matrixMv.put(m);
+            matrixMv.rewind();
         } else if(matrixMode==GL.GL_PROJECTION) {
             matrixP.clear();
             matrixP.put(m);
             matrixP.rewind();
         } 
-        modifiedPMV = true;
+        m.position(spos);
+        modified = true;
     }
 
     public void glPopMatrix() {
+        float[] stackEntry=null;
         if(matrixMode==GL.GL_MODELVIEW) {
-            matrixMV=(FloatBuffer)matrixMVStack.remove(0);
+            stackEntry = (float[])matrixMvStack.remove(0);
         } else if(matrixMode==GL.GL_PROJECTION) {
-            matrixP=(FloatBuffer)matrixPStack.remove(0);
+            stackEntry = (float[])matrixPStack.remove(0);
         } 
-        modifiedPMV = true;
+        glLoadMatrixf(stackEntry, 0);
     }
 
     public void glPushMatrix() {
+        float[] stackEntry = new float[1*16];
         if(matrixMode==GL.GL_MODELVIEW) {
-            matrixMVStack.add(0, matrixMV);
+            matrixMv.get(stackEntry);
+            matrixMv.rewind();
+            matrixMvStack.add(0, stackEntry);
         } else if(matrixMode==GL.GL_PROJECTION) {
-            matrixPStack.add(0, matrixP);
-        } 
+            matrixP.get(stackEntry);
+            matrixP.rewind();
+            matrixPStack.add(0, stackEntry);
+        }
     }
 
     public void glLoadIdentity() {
         if(matrixMode==GL.GL_MODELVIEW) {
-            matrixMV.clear();
-            pvmProjectf.gluMakeIdentityf(matrixMV);
-            matrixMV.rewind();
+            matrixMv.clear();
+            matrixMv.put(matrixIdent);
+            matrixMv.rewind();
+            matrixIdent.rewind();
         } else if(matrixMode==GL.GL_PROJECTION) {
             matrixP.clear();
-            pvmProjectf.gluMakeIdentityf(matrixP);
+            matrixP.put(matrixIdent);
             matrixP.rewind();
+            matrixIdent.rewind();
         } 
-        modifiedPMV = true;
+        modified = true;
+    }
+
+    public void glMultMatrixf(FloatBuffer a, FloatBuffer b, FloatBuffer p) {
+       for (int i = 0; i < 4; i++) {
+          final float ai0=a.get(i+0*4),  ai1=a.get(i+1*4),  ai2=a.get(i+2*4),  ai3=a.get(i+3*4);
+          p.put(i+0*4 , ai0 * b.get(0+0*4) + ai1 * b.get(1+0*4) + ai2 * b.get(2+0*4) + ai3 * b.get(3+0*4) );
+          p.put(i+1*4 , ai0 * b.get(0+1*4) + ai1 * b.get(1+1*4) + ai2 * b.get(2+1*4) + ai3 * b.get(3+1*4) );
+          p.put(i+2*4 , ai0 * b.get(0+2*4) + ai1 * b.get(1+2*4) + ai2 * b.get(2+2*4) + ai3 * b.get(3+2*4) );
+          p.put(i+3*4 , ai0 * b.get(0+3*4) + ai1 * b.get(1+3*4) + ai2 * b.get(2+3*4) + ai3 * b.get(3+3*4) );
+       }
+       // or .. projectFloat.gluMultMatricesf(b, a, p); 
     }
 
     public void glMultMatrixf(FloatBuffer m) {
         if(matrixMode==GL.GL_MODELVIEW) {
-            pvmProjectf.gluMultMatricesf(m, matrixMV, matrixTemp);
-            matrixMV.clear();
-            matrixMV.put(matrixTemp);
-            matrixMV.rewind();
+            glMultMatrixf(matrixMv, m, matrixMult);
+            matrixMv.clear();
+            matrixMv.put(matrixMult);
+            matrixMv.rewind();
         } else if(matrixMode==GL.GL_PROJECTION) {
-            pvmProjectf.gluMultMatricesf(m, matrixP, matrixTemp);
+            glMultMatrixf(matrixP, m, matrixMult);
             matrixP.clear();
-            matrixP.put(matrixTemp);
+            matrixP.put(matrixMult);
             matrixP.rewind();
         } 
-        matrixTemp.rewind();
-        modifiedPMV = true;
+        matrixMult.rewind();
+        modified = true;
     }
 
     public void glTranslatef(float x, float y, float z) {
         // Translation matrix: 
-        //  1 0 0 0
-        //  0 1 0 0
-        //  0 0 1 0
-        //  x y z 1
-        matrixTrans.put(3*4+0, x);
-        matrixTrans.put(3*4+1, y);
-        matrixTrans.put(3*4+2, z);
-
+        //  1 0 0 x
+        //  0 1 0 y
+        //  0 0 1 z
+        //  0 0 0 1
+        matrixTrans.put(0+4*3, x);
+        matrixTrans.put(1+4*3, y);
+        matrixTrans.put(2+4*3, z);
         glMultMatrixf(matrixTrans);
     }
 
@@ -185,7 +239,7 @@ public class PMVMatrix {
         float s = (float)Math.sin(angrad);
 
         vec3f[0]=x; vec3f[1]=y; vec3f[2]=z;
-        pvmProjectf.normalize(vec3f);
+        projectFloat.normalize(vec3f);
         x = vec3f[0]; y = vec3f[1]; z = vec3f[2];
 
         // Rotation matrix:
@@ -199,6 +253,19 @@ public class PMVMatrix {
         float ys = y*s;
         float yz = y*z;
         float zs = z*s;
+        if(false) {
+        matrixRot.put(0+4*0, x*x*ic+c);
+        matrixRot.put(0+4*1, xy*ic+zs);
+        matrixRot.put(0+4*2, xz*ic-ys);
+
+        matrixRot.put(1+4*0, xy*ic+zs);
+        matrixRot.put(1+4*1, y*y*ic+c);
+        matrixRot.put(1+4*2, yz*ic-xs);
+
+        matrixRot.put(2+4*0, xz*ic-ys);
+        matrixRot.put(2+4*1, yz*ic+xs);
+        matrixRot.put(2+4*2, z*z*ic+c);
+        } else {
         matrixRot.put(0*4+0, x*x*ic+c);
         matrixRot.put(0*4+1, xy*ic+zs);
         matrixRot.put(0*4+2, xz*ic-ys);
@@ -210,6 +277,7 @@ public class PMVMatrix {
         matrixRot.put(2*4+0, xz*ic+ys);
         matrixRot.put(2*4+1, yz*ic-xs);
         matrixRot.put(2*4+2, z*z*ic+c);
+        }
 
         glMultMatrixf(matrixRot);
     }
@@ -220,19 +288,19 @@ public class PMVMatrix {
         //  0 y 0 0
         //  0 0 z 0
         //  0 0 0 1
-        matrixScale.put(0*4+0, x);
-        matrixScale.put(1*4+1, y);
-        matrixScale.put(2*4+2, z);
+        matrixScale.put(0+4*0, x);
+        matrixScale.put(1+4*1, y);
+        matrixScale.put(2+4*2, z);
 
         glMultMatrixf(matrixScale);
     }
 
     public void glOrthof(float left, float right, float bottom, float top, float zNear, float zFar) {
         // Ortho matrix: 
-        //  2/dx  0     0    0
-        //  0     2/dy  0    0
-        //  0     0     2/dz 0
-        //  tx    tx    tx   1
+        //  2/dx  0     0    tx
+        //  0     2/dy  0    ty
+        //  0     0     2/dz tz
+        //  0     0     0    1
         float dx=right-left;
         float dy=top-bottom;
         float dz=zFar-zNear;
@@ -240,12 +308,12 @@ public class PMVMatrix {
         float ty=-1.0f*(top+bottom)/dy;
         float tz=-1.0f*(zFar+zNear)/dz;
 
-        matrixOrtho.put(0*4+0, 2.0f/dx);
-        matrixOrtho.put(1*4+1, 2.0f/dy);
-        matrixOrtho.put(2*4+2, -2.0f/dz);
-        matrixOrtho.put(3*4+0, tx);
-        matrixOrtho.put(3*4+1, ty);
-        matrixOrtho.put(3*4+2, tz);
+        matrixOrtho.put(0+4*0, 2.0f/dx);
+        matrixOrtho.put(1+4*1, 2.0f/dy);
+        matrixOrtho.put(2+4*2, -2.0f/dz);
+        matrixOrtho.put(0+4*3, tx);
+        matrixOrtho.put(1+4*3, ty);
+        matrixOrtho.put(2+4*3, tz);
 
         glMultMatrixf(matrixOrtho);
     }
@@ -271,40 +339,57 @@ public class PMVMatrix {
         float C=-1.0f*(zFar+zNear)/dz;
         float D=-2.0f*(zFar*zNear)/dz;
 
-        matrixFrustum.put(0*4+0, zNear2/dx);
-        matrixFrustum.put(1*4+1, zNear2/dy);
-        matrixFrustum.put(2*4+2, C);
-        matrixFrustum.put(0*4+2, A);
-        matrixFrustum.put(1*4+2, B);
-        matrixFrustum.put(2*4+3, D);
-        matrixFrustum.put(3*4+2, -1.0f);
+        matrixFrustum.put(0+4*0, zNear2/dx);
+        matrixFrustum.put(1+4*1, zNear2/dy);
+        matrixFrustum.put(2+4*2, C);
+
+        matrixFrustum.put(0+4*2, A);
+        matrixFrustum.put(1+4*2, B);
+
+        matrixFrustum.put(2+4*3, D);
+        matrixFrustum.put(3+4*2, -1.0f);
 
         glMultMatrixf(matrixFrustum);
     }
 
     public void gluPerspective(float fovy, float aspect, float zNear, float zFar) {
-        float radians = fovy/2 * (float) Math.PI / 180;
-
-        float sine, cotangent, deltaZ;
+      float top=(float)Math.tan(fovy*((float)Math.PI)/360.0f)*zNear;
+      float bottom=-1.0f*top;
+      float left=aspect*bottom;
+      float right=aspect*top;
+      glFrustumf(left, right, bottom, top, zNear, zFar);
+    }
 
-        deltaZ = zFar - zNear;
-        sine = (float) Math.sin(radians);
+    private void setMviMvit() {
+        if(!projectFloat.gluInvertMatrixf(matrixMv, matrixMvi)) {
+            throw new GLException("Invalid source Mv matrix, can't compute inverse");
+        }
 
-        if ((deltaZ == 0.0f) || (sine == 0.0f) || (aspect == 0.0f)) {
-          return;
+        // transpose matrix 
+        for (int i = 0; i < 4; i++) {
+            for (int j = 0; j < 4; j++) {
+                matrixMvit.put(j+i*4, matrixMvi.get(i+j*4));
+            }
         }
 
-        cotangent = (float) Math.cos(radians) / sine;
+        // fetch 3x3
+        for (int i = 0; i < 3; i++) {
+            for (int j = 0; j < 3; j++) {
+                matrixMvit3.put(i+j*3, matrixMvit.get(i+j*4));
+            }
+        }
+    }
 
-        matrixPersp.put(0 * 4 + 0, cotangent / aspect);
-        matrixPersp.put(1 * 4 + 1, cotangent);
-        matrixPersp.put(2 * 4 + 2, - (zFar + zNear) / deltaZ);
-        matrixPersp.put(2 * 4 + 3, -1);
-        matrixPersp.put(3 * 4 + 2, -2 * zNear * zFar / deltaZ);
-        matrixPersp.put(3 * 4 + 3, 0);
+    protected FloatBuffer matrixIdent;
+    protected FloatBuffer matrixPMvMviT, matrixPMvMvi, matrixPMv, matrixP, matrixMv, matrixMvi, matrixMvit;
+    protected FloatBuffer matrixMvit3;
+    protected FloatBuffer matrixMult, matrixTrans, matrixRot, matrixScale, matrixOrtho, matrixFrustum;
+    protected float[] vec3f;
+    protected List/*FloatBuffer*/ matrixPStack, matrixMvStack;
+    protected int matrixMode = GL.GL_MODELVIEW;
+    protected boolean modified = false;
+    protected ProjectFloat projectFloat;
 
-        glMultMatrixf(matrixPersp);
-    }
 }
 
 
diff --git a/src/classes/javax/media/opengl/util/VBOBufferDraw.java b/src/classes/javax/media/opengl/util/VBOBufferDraw.java
deleted file mode 100644
index 8ce1b3232..000000000
--- a/src/classes/javax/media/opengl/util/VBOBufferDraw.java
+++ /dev/null
@@ -1,392 +0,0 @@
-
-package javax.media.opengl.util;
-
-import javax.media.opengl.*;
-import java.nio.*;
-import com.sun.opengl.impl.*;
-
-public abstract class VBOBufferDraw {
-
-  public static VBOBufferDraw create(int glArrayType, int glDataType, int glBufferUsage, int comps, int initialSize) 
-    throws GLException
-  {
-    Class[] types = new Class[]{ int.class, int.class, int.class, int.class, int.class };
-    Object[] args = new Integer[]{ new Integer(glArrayType), new Integer(glDataType), new Integer(glBufferUsage), 
-                                   new Integer(comps), new Integer(initialSize) } ;
-
-    if(GLProfile.isGL2ES1()) {
-        return (VBOBufferDraw) GLReflection.createInstance("com.sun.opengl.impl.gl2es1.VBOBufferDrawGL2ES1", types, args);
-    } else if(GLProfile.isGLES2()) {
-        return (VBOBufferDraw) GLReflection.createInstance("com.sun.opengl.impl.es2.VBOBufferDrawGLES2", types, args);
-    }
-    throw new GLException("VBOBufferDraw not supported for profile: "+GLProfile.getProfile());
-  }
-
-  protected void init(int glArrayType, int glDataType, int glBufferUsage, int comps, int initialSize) 
-    throws GLException
-  {
-    vboUsage=true;
-
-    switch(glArrayType) {
-        case GL2ES1.GL_VERTEX_ARRAY:
-        case GL2ES1.GL_NORMAL_ARRAY:
-            if(3!=comps && 0!=comps) {
-                throw new GLException("component size for NORMAL_ARRAY must be 3 or 0: "+comps+" \n\t"+this); 
-            }
-        case GL2ES1.GL_COLOR_ARRAY:
-        case GL2ES1.GL_TEXTURE_COORD_ARRAY:
-            break;
-        default:
-            throw new GLException("invalid glArrayType: "+glArrayType+":\n\t"+this); 
-    }
-    this.glArrayType = glArrayType;
-    this.glDataType = glDataType;
-    this.clazz = getBufferClass(glDataType);
-    this.buffer = null;
-    this.components = comps;
-    this.initialSize = initialSize;
-    if( ! (GLProfile.isGL2ES2() && glBufferUsage==GL2ES2.GL_STREAM_DRAW) ) {
-        switch(glBufferUsage) {
-            case GL2ES1.GL_STATIC_DRAW:
-            case GL2ES1.GL_DYNAMIC_DRAW:
-                break;
-            default:
-                throw new GLException("invalid glBufferUsage: "+glBufferUsage+":\n\t"+this); 
-        }
-    }
-    this.glBufferUsage = glBufferUsage;
-    this.vboName = 0;
-    this.sealed=false;
-    this.bufferEnabled=false;
-    growVBO(initialSize);
-  }
-
-  public boolean usesVBO() { return vboUsage; }
-
-  public void    setVBOUsage(boolean vboUsage) { 
-    checkSeal(false);
-    this.vboUsage=vboUsage; 
-  }
-
-  public int getGLArrayType() {
-    return glArrayType;
-  }
-
-  public int getGlDataType() {
-    return glDataType;
-  }
-
-  public int getComponents() {
-    return components;
-  }
-
-  public Class getBufferClass() {
-    return clazz;
-  }
-
-  public Buffer getBuffer() {
-    return buffer;
-  }
-
-  public int getBufferUsage() {
-    return glBufferUsage;
-  }
-
-  public void destroy(GL gl) {
-    reset(gl);
-    if(vboName!=0) {
-        int[] tmp = new int[1];
-        tmp[0] = vboName;
-        gl.glDeleteBuffers(1, tmp, 0);
-        vboName = 0;
-    }
-  }
-
-  public void reset() {
-    reset(null);
-  }
-
-  public void reset(GL gl) {
-    if(gl!=null) {
-        disableBuffer(gl);
-    }
-    this.sealed=false;
-    if(buffer!=null) {
-        buffer.clear();
-    }
-  }
-
-  private final void init_vbo(GL gl) {
-    if(vboUsage && vboName==0) {
-        int[] tmp = new int[1];
-        gl.glGenBuffers(1, tmp, 0);
-        vboName = tmp[0];
-    }
-  }
-
-  private final void checkSeal(boolean test) throws GLException {
-    if(sealed!=test) {
-        if(test) {
-            throw new GLException("Not Sealed yet, seal first:\n\t"+this); 
-        } else {
-            throw new GLException("Already Sealed, can't modify VBO:\n\t"+this); 
-        }
-    }
-  }
-
-  public final boolean growVBOIfNecessary(int spare) {
-    if(buffer==null) {
-        throw new GLException("buffer no configured:\n\t"+this);
-    }
-    if(buffer!=null && buffer.remaining()<spare) { 
-        growVBO();
-        return true;
-    }
-    return false;
-  }
-
-  public final void growVBO() {
-    growVBO(initialSize);
-  }
-
-  public static final Class getBufferClass(int glDataType) {
-    switch(glDataType) {
-        case GL2ES1.GL_BYTE:
-        case GL2ES1.GL_UNSIGNED_BYTE:
-            return ByteBuffer.class;
-        case GL2ES1.GL_SHORT:
-        case GL2ES1.GL_UNSIGNED_SHORT:
-            return ShortBuffer.class;
-        case GL2ES1.GL_FIXED:
-            return IntBuffer.class;
-        case GL2ES1.GL_FLOAT:
-            return FloatBuffer.class;
-        default:        
-            throw new GLException("Given OpenGL data type not supported: "+glDataType);
-    }
-  }
-
-  public final int getBufferCompSize() {
-    if(clazz==ByteBuffer.class) {
-        return BufferUtil.SIZEOF_BYTE;
-    }
-    if(clazz==ShortBuffer.class) {
-        return BufferUtil.SIZEOF_SHORT;
-    }
-    if(clazz==IntBuffer.class) {
-        return BufferUtil.SIZEOF_INT;
-    }
-    if(clazz==FloatBuffer.class) {
-        return BufferUtil.SIZEOF_FLOAT;
-    }
-    throw new GLException("Given Buffer Class not supported: "+clazz+":\n\t"+this);
-  }
-
-  public final void growVBO(int additional) {
-    int osize;
-
-    checkSeal(false);
-
-    if(components>0) {
-        osize = (buffer!=null)?buffer.capacity():0;
-        if(clazz==ByteBuffer.class) {
-            ByteBuffer newBBuffer = BufferUtil.newByteBuffer( (osize+additional) * components );
-            if(buffer!=null) {
-                buffer.flip();
-                newBBuffer.put((ByteBuffer)buffer);
-            }
-            buffer = newBBuffer;
-        } else if(clazz==ShortBuffer.class) {
-            ShortBuffer newSBuffer = BufferUtil.newShortBuffer( (osize+additional) * components );
-            if(buffer!=null) {
-                buffer.flip();
-                newSBuffer.put((ShortBuffer)buffer);
-            }
-            buffer = newSBuffer;
-        } else if(clazz==IntBuffer.class) {
-            IntBuffer newIBuffer = BufferUtil.newIntBuffer( (osize+additional) * components );
-            if(buffer!=null) {
-                buffer.flip();
-                newIBuffer.put((IntBuffer)buffer);
-            }
-            buffer = newIBuffer;
-        } else if(clazz==FloatBuffer.class) {
-            FloatBuffer newFBuffer = BufferUtil.newFloatBuffer( (osize+additional) * components );
-            if(buffer!=null) {
-                buffer.flip();
-                newFBuffer.put((FloatBuffer)buffer);
-            }
-            buffer = newFBuffer;
-        } else {
-            throw new GLException("Given Buffer Class not supported: "+clazz+":\n\t"+this);
-        }
-    }
-  }
-
-  public void rewind() {
-    checkSeal(true);
-
-    if(buffer!=null) {
-        buffer.rewind();
-    }
-  }
-
-  public int getVerticeNumber() {
-    return ( buffer!=null ) ? ( buffer.limit() / components ) : 0 ;
-  }
-
-  public void seal(GL gl, boolean disableAfterSeal)
-  {
-    checkSeal(false);
-    sealed = true;
-    init_vbo(gl);
-
-    if (null!=buffer) {
-        buffer.flip();
-        enableBuffer(gl, true);
-    }
-    if(null==buffer || disableAfterSeal) {
-        disableBuffer(gl);
-    }
-
-  }
-
-  public void enableBuffer(GL gl)
-  {
-        enableBuffer(gl, false);
-  }
-
-  private void enableBuffer(GL gl, boolean newData)
-  {
-    checkSeal(true);
-    enableBufferGLImpl(gl, newData);
-  }
-    
-  protected abstract void enableBufferGLImpl(GL gl, boolean newData);
-
-  public void disableBuffer(GL gl) {
-      disableBufferGLImpl(gl);
-  }
-
-  protected abstract void disableBufferGLImpl(GL gl) ;
-
-  public void padding(int done) {
-    if(buffer==null) return; // JAU
-    if(buffer==null) {
-        throw new GLException("buffer no configured:\n\t"+this);
-    }
-    while(done<components) {
-        if(clazz==ByteBuffer.class) {
-            ((ByteBuffer)buffer).put((byte)0);
-        } else if(clazz==ShortBuffer.class) {
-            ((ShortBuffer)buffer).put((short)0);
-        } else if(clazz==IntBuffer.class) {
-            ((IntBuffer)buffer).put(0);
-        } else if(clazz==FloatBuffer.class) {
-            ((FloatBuffer)buffer).put(0f);
-        } else {
-            throw new GLException("Given Buffer Class not supported: "+clazz+" :\n\t"+this);
-        }
-        done++;
-    }
-  }
-
-  public void putb(byte v) {
-    if(buffer==null) return; // JAU
-    growVBOIfNecessary(1);
-    if(clazz==ByteBuffer.class) {
-        ((ByteBuffer)buffer).put(v);
-    } else if(clazz==ShortBuffer.class) {
-        ((ShortBuffer)buffer).put((short)v);
-    } else if(clazz==IntBuffer.class) {
-        ((IntBuffer)buffer).put((int)v);
-    } else {
-        throw new GLException("Byte doesn't match Buffer Class: "+clazz+" :\n\t"+this);
-    }
-  }
-
-  public void puts(short v) {
-    if(buffer==null) return; // JAU
-    growVBOIfNecessary(1);
-    if(clazz==ShortBuffer.class) {
-        ((ShortBuffer)buffer).put(v);
-    } else if(clazz==IntBuffer.class) {
-        ((IntBuffer)buffer).put((int)v);
-    } else {
-        throw new GLException("Short doesn't match Buffer Class: "+clazz+" :\n\t"+this);
-    }
-  }
-
-  public void puti(int v) {
-    if(buffer==null) return; // JAU
-    growVBOIfNecessary(1);
-    if(clazz==IntBuffer.class) {
-        ((IntBuffer)buffer).put(v);
-    } else {
-        throw new GLException("Integer doesn't match Buffer Class: "+clazz+" :\n\t"+this);
-    }
-  }
-
-  public void putx(int v) {
-    if(buffer==null) return; // JAU
-    growVBOIfNecessary(1);
-    if(clazz==IntBuffer.class) {
-        ((IntBuffer)buffer).put(v);
-    } else {
-        throw new GLException("Fixed doesn't match Buffer Class: "+clazz+" :\n\t"+this);
-    }
-  }
-
-  public void putf(float v) {
-    if(buffer==null) return; // JAU
-    growVBOIfNecessary(1);
-    if(clazz==FloatBuffer.class) {
-        ((FloatBuffer)buffer).put(v);
-    } else if(clazz==IntBuffer.class) {
-        ((IntBuffer)buffer).put(FixedPoint.toFixed(v));
-    } else {
-        throw new GLException("Float doesn't match Buffer Class: "+clazz+" :\n\t"+this);
-    }
-  }
-
-  public void putd(double v) {
-    if(buffer==null) return; // JAU
-    growVBOIfNecessary(1);
-    if(clazz==FloatBuffer.class) {
-        // FIXME: ok ?
-        ((FloatBuffer)buffer).put((float)v);
-    } else {
-        throw new GLException("Double doesn't match Buffer Class: "+clazz+" :\n\t"+this);
-    }
-  }
-
-  public String toString() {
-    return "VBOBufferDraw[vertices "+getVerticeNumber()+
-                       ", glArrayType "+glArrayType+
-                       ", glDataType "+glDataType+ 
-                       ", bufferClazz "+clazz+ 
-                       ", components "+components+ 
-                       ", initialSize "+initialSize+ 
-                       ", glBufferUsage "+glBufferUsage+ 
-                       ", vboUsage "+vboUsage+ 
-                       ", vboName "+vboName+ 
-                       ", sealed "+sealed+ 
-                       ", bufferEnabled "+bufferEnabled+ 
-                       ",\n\tbuffer "+buffer+ 
-                       "]";
-  }
-
-  protected int glArrayType;
-  protected int glDataType;
-  protected Class clazz;
-  protected Buffer buffer;
-  protected int components;
-  protected int initialSize;
-  protected int glBufferUsage;
-  protected int vboName;
-  protected boolean sealed;
-  protected boolean bufferEnabled;
-  protected boolean vboUsage;
-
-}
-
diff --git a/src/classes/javax/media/opengl/util/glsl/ShaderCode.java b/src/classes/javax/media/opengl/util/glsl/ShaderCode.java
new file mode 100644
index 000000000..46ead1b30
--- /dev/null
+++ b/src/classes/javax/media/opengl/util/glsl/ShaderCode.java
@@ -0,0 +1,122 @@
+
+package javax.media.opengl.util.glsl;
+
+import javax.media.opengl.util.*;
+import javax.media.opengl.*;
+
+import java.nio.*;
+import java.io.PrintStream;
+
+public class ShaderCode {
+    public ShaderCode(int type, int number, 
+                      int binFormat, Buffer binary, String[][] source) {
+        switch (type) {
+            case GL2ES2.GL_VERTEX_SHADER:
+            case GL2ES2.GL_FRAGMENT_SHADER:
+                break;
+            default:
+                throw new GLException("Unknown shader type: "+type);
+        }
+        shaderSource = source;
+        shaderBinaryFormat = binFormat;
+        shaderBinary = binary;
+        shaderType   = type;
+        shader = BufferUtil.newIntBuffer(number);
+        id = getNextID();
+    }
+
+    /**
+     * returns the uniq shader id as an integer
+     * @see #key()
+     */
+    public int        id() { return id.intValue(); }
+
+    /**
+     * returns the uniq shader id as an Integer
+     *
+     * @see #id()
+     */
+    public Integer    key() { return id; }
+
+    public int        shaderType() { return shaderType; }
+    public String     shaderTypeStr() { return shaderTypeStr(shaderType); }
+
+    public static String shaderTypeStr(int type) { 
+        switch (type) {
+            case GL2ES2.GL_VERTEX_SHADER:
+                return "VERTEX_SHADER";
+            case GL2ES2.GL_FRAGMENT_SHADER:
+                return "FRAGMENT_SHADER";
+        }
+        return "UNKNOWN_SHADER";
+    }
+
+    public int        shaderBinaryFormat() { return shaderBinaryFormat; }
+    public Buffer     shaderBinary() { return shaderBinary; }
+    public String[][] shaderSource() { return shaderSource; }
+
+    public boolean    isValid() { return valid; }
+
+    public IntBuffer  shader() { return shader; }
+
+    public boolean compile(GL2ES2 gl) {
+        return compile(gl, null);
+    }
+    public boolean compile(GL2ES2 gl, PrintStream verboseOut) {
+        if(isValid()) return true;
+
+        // Create & Compile the vertex/fragment shader objects
+        valid=gl.glCreateCompileShader(shader, shaderType,
+                                       shaderBinaryFormat, shaderBinary,
+                                       shaderSource, verboseOut);
+        shader.clear();
+        return valid;
+    }
+
+    public void release(GL2ES2 gl) {
+        if(isValid()) {
+            gl.glDeleteShader(shader());
+            valid=false;
+        }
+    }
+
+    public boolean equals(Object obj) {
+        if(this==obj) return true;
+        if(obj instanceof ShaderCode) {
+            return id()==((ShaderCode)obj).id();
+        }
+        return false;
+    }
+    public int hashCode() {
+        return id.intValue();
+    }
+    public String toString() {
+        StringBuffer buf = new StringBuffer("ShaderCode [id="+id+", type="+shaderTypeStr()+", valid="+valid);
+        /*
+        if(shaderSource!=null) {
+            for(int i=0; i<shaderSource.length; i++) {
+                for(int j=0; j<shaderSource[i].length; j++) {
+                    buf.append("\n\t, ShaderSource["+i+"]["+j+"]:\n");
+                    buf.append(shaderSource[i][j]);
+                }
+            }
+        } */
+        buf.append("]");
+        return buf.toString();
+    }
+
+    protected String[][] shaderSource = null;
+    protected Buffer     shaderBinary = null;
+    protected int        shaderBinaryFormat = -1;
+    protected IntBuffer  shader = null;
+    protected int        shaderType = -1;
+    protected Integer    id = null;
+
+    protected boolean valid=false;
+
+    private static synchronized Integer getNextID() {
+        return new Integer(nextID++);
+    }
+    protected static int nextID = 1;
+}
+
diff --git a/src/classes/javax/media/opengl/util/glsl/ShaderProgram.java b/src/classes/javax/media/opengl/util/glsl/ShaderProgram.java
new file mode 100644
index 000000000..5628f3332
--- /dev/null
+++ b/src/classes/javax/media/opengl/util/glsl/ShaderProgram.java
@@ -0,0 +1,201 @@
+
+package javax.media.opengl.util.glsl;
+
+import javax.media.opengl.util.*;
+import javax.media.opengl.*;
+
+import java.util.HashMap;
+import java.util.Iterator;
+import java.nio.*;
+import java.io.PrintStream;
+
+public class ShaderProgram {
+    public ShaderProgram() {
+        id = getNextID();
+    }
+
+    public boolean linked() {
+        return programLinked;
+    }
+
+    public boolean inUse() {
+        return programInUse;
+    }
+
+    public int program() { return shaderProgram; }
+
+    /**
+     * returns the uniq shader id as an integer
+     * @see #key()
+     */
+    public int        id() { return id.intValue(); }
+
+    /**
+     * returns the uniq shader id as an Integer
+     *
+     * @see #id()
+     */
+    public Integer    key() { return id; }
+
+    /**
+     * @see #glReleaseAllVertexAttributes
+     */
+    public synchronized void release(GL2ES2 gl) {
+        release(gl, false);
+    }
+
+    /**
+     * @see #glReleaseAllVertexAttributes
+     */
+    public synchronized void release(GL2ES2 gl, boolean releaseShaderToo) {
+        glUseProgram(gl, false);
+        for(Iterator iter=shaderMap.values().iterator(); iter.hasNext(); ) {
+            ShaderCode shaderCode = (ShaderCode) iter.next();
+            gl.glDetachShader(shaderProgram, shaderCode.shader());
+            if(releaseShaderToo) {
+                shaderCode.release(gl);
+            }
+        }
+        shaderMap.clear();
+        gl.glDeleteProgram(shaderProgram);
+        shaderProgram=-1;
+    }
+
+    //
+    // ShaderCode handling
+    //
+
+    /**
+     * Adds a new shader to a this non running program.
+     *
+     * @return false if the program is in use, or the shader already exist,
+     *         otherwise true.
+     */
+    public synchronized boolean add(ShaderCode shaderCode) {
+        if(shaderMap.containsKey(shaderCode.key())) return false;
+        shaderMap.put(shaderCode.key(), shaderCode);
+        return true;
+    }
+
+    public synchronized ShaderCode getShader(int id) {
+        return (ShaderCode) shaderMap.get(new Integer(id));
+    }
+
+    //
+    // Program handling
+    //
+
+    /**
+     * Replace a shader in a 'running' program.
+     * Refetches all previously bin/get attribute names
+     * and resets all attribute data as well
+     *
+     * @see getAttribLocation
+     * @param gl 
+     * @param oldShaderID the to be replace Shader
+     * @param newShader   the new ShaderCode
+     * @param verboseOut  the optional verbose outputstream
+     * @throws GLException is the program is not linked
+     *
+     * @see #glRefetchAttribLocations
+     * @see #glResetAllVertexAttributes
+     * @see #glReplaceShader
+     */
+    public synchronized boolean glReplaceShader(GL2ES2 gl, int oldShaderID, ShaderCode newShader, PrintStream verboseOut) {
+        if(!programLinked) throw new GLException("Program is not linked");
+        boolean shaderWasInUse = programInUse;
+        glUseProgram(gl, false);
+        if(!newShader.compile(gl, verboseOut)) {
+            return false;
+        } 
+        if(oldShaderID>=0) {
+            ShaderCode oldShader = (ShaderCode) shaderMap.remove(new Integer(oldShaderID));
+            if(null!=oldShader) {
+                gl.glDetachShader(shaderProgram, oldShader.shader());
+            }
+        }
+        add(newShader);
+
+        gl.glAttachShader(shaderProgram, newShader.shader());
+        gl.glLinkProgram(shaderProgram);
+        if ( ! gl.glIsProgramValid(shaderProgram, System.err) )  {
+            return false;
+        }
+
+        if(shaderWasInUse) {
+            glUseProgram(gl, true);
+        }
+        return true;
+    }
+
+    public synchronized boolean link(GL2ES2 gl, PrintStream verboseOut) {
+        if(programLinked) throw new GLException("Program is already linked");
+
+        if(0>shaderProgram) {
+            shaderProgram = gl.glCreateProgram();
+        }
+
+        for(Iterator iter=shaderMap.values().iterator(); iter.hasNext(); ) {
+            ShaderCode shaderCode = (ShaderCode) iter.next();
+            if(!shaderCode.compile(gl, verboseOut)) {
+                return false;
+            }
+            gl.glAttachShader(shaderProgram, shaderCode.shader());
+        }
+
+        // Link the program
+        gl.glLinkProgram(shaderProgram);
+
+        if ( ! gl.glIsProgramValid(shaderProgram, System.err) )  {
+            return false;
+        }
+        programLinked=true;
+
+        return true;
+    }
+
+    public boolean equals(Object obj) {
+        if(this==obj) return true;
+        if(obj instanceof ShaderCode) {
+            return id()==((ShaderCode)obj).id();
+        }
+        return false;
+    }
+    public int hashCode() {
+        return id.intValue();
+    }
+    public String toString() {
+        StringBuffer buf = new StringBuffer();
+        buf.append("ShaderProgram[id="+id);
+        buf.append(", linked="+programLinked+", inUse="+programInUse+", program: "+shaderProgram+", [");
+        for(Iterator iter=shaderMap.values().iterator(); iter.hasNext(); ) {
+            buf.append((ShaderCode) iter.next());
+            buf.append(" ");
+        }
+        buf.append("]");
+        return buf.toString();
+    }
+
+    protected synchronized void glUseProgram(GL2ES2 gl, boolean on) {
+        if(!programLinked) throw new GLException("Program is not linked");
+        if(programInUse==on) return;
+        gl.glUseProgram(on?shaderProgram:0);
+        programInUse = on;
+
+        //Throwable tX = new Throwable("Info: ShaderProgram.glUseProgram: "+on);
+        //tX.printStackTrace();
+
+    }
+
+    protected boolean programLinked = false;
+    protected boolean programInUse = false;
+    protected int shaderProgram=-1;
+    protected HashMap shaderMap = new HashMap();
+    protected Integer    id = null;
+
+    private static synchronized Integer getNextID() {
+        return new Integer(nextID++);
+    }
+    protected static int nextID = 1;
+}
+
diff --git a/src/classes/javax/media/opengl/util/glsl/ShaderState.java b/src/classes/javax/media/opengl/util/glsl/ShaderState.java
new file mode 100644
index 000000000..7f917cc07
--- /dev/null
+++ b/src/classes/javax/media/opengl/util/glsl/ShaderState.java
@@ -0,0 +1,583 @@
+
+package javax.media.opengl.util.glsl;
+
+import javax.media.opengl.util.*;
+import javax.media.opengl.*;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.nio.*;
+import java.io.PrintStream;
+
+public class ShaderState {
+
+    public ShaderState() {
+    }
+
+    public boolean verbose() { return verbose; }
+
+    public void setVerbose(boolean v) { verbose=v; }
+
+    /**
+     * Fetches the current shader state
+     *
+     * @see javax.media.opengl.util.glsl.ShaderState#glUseProgram(GL2ES2, boolean)
+     * @see javax.media.opengl.util.glsl.ShaderState#getCurrent()
+     */
+    public static synchronized ShaderState getCurrent() { return currentShaderState; }
+
+    /**
+     * Turns the shader program on 
+     * and set this ShaderState to current if on equals true
+     *
+     * @see javax.media.opengl.util.glsl.ShaderState#glUseProgram(GL2ES2, boolean)
+     * @see javax.media.opengl.util.glsl.ShaderState#getCurrent()
+     */
+    public synchronized void glUseProgram(GL2ES2 gl, boolean on) {
+        if(on) {
+            if(null!=shaderProgram) {
+                shaderProgram.glUseProgram(gl, true);
+            } else {
+                throw new GLException("No program is attached");
+            }
+            if(currentShaderState!=this) {
+                currentShaderState = this;
+            }
+        } else if(null!=shaderProgram) {
+            shaderProgram.glUseProgram(gl, false);
+        }
+    }
+
+    public boolean linked() {
+        return (null!=shaderProgram)?shaderProgram.linked():false;
+    }
+
+    public boolean inUse() {
+        return (null!=shaderProgram)?shaderProgram.inUse():false;
+    }
+
+    /**
+     * Attach or switch a shader program
+     *
+     * Attaching a shader program the first time, 
+     * as well as switching to another program on the fly,
+     * while managing all attribute and uniform data.
+     */
+    public synchronized void attachShaderProgram(GL2ES2 gl, ShaderProgram prog) {
+        boolean prgInUse = false; // earmarked state
+
+        if(null!=shaderProgram) {
+            if(shaderProgram.equals(prog)) {
+                // nothing to do ..
+                if(DEBUG) {
+                    System.err.println("Info: attachShaderProgram: NOP: equal id: "+shaderProgram.id());
+                }
+                return;
+            }
+            prgInUse = shaderProgram.inUse();
+        }
+        if(DEBUG) {
+            Throwable tX = new Throwable("Info: attachShaderProgram: BEGIN "+shaderProgram+" -> "+prog);
+            tX.printStackTrace();
+        }
+
+        // register new one
+        shaderProgram = prog;
+
+        if(null!=shaderProgram) {
+            // reinstall all data ..
+            shaderProgram.glUseProgram(gl, true);
+            glResetAllVertexAttributes(gl);
+            glResetAllUniforms(gl);
+            if(!prgInUse) {
+                shaderProgram.glUseProgram(gl, false);
+            }
+        }
+        if(DEBUG) {
+            System.err.println("Info: attachShaderProgram: END");
+        }
+    }
+
+    public ShaderProgram shaderProgram() { return shaderProgram; }
+
+    /**
+     * @see #glReleaseAllVertexAttributes
+     * @see #glReleaseAllUniforms
+     */
+    public synchronized void release(GL2ES2 gl) {
+        release(gl, false, false);
+    }
+
+    public synchronized void release(GL2ES2 gl, boolean releaseProgramToo, boolean releaseShaderToo) {
+        boolean prgInUse = false;
+        if(null!=shaderProgram) {
+            prgInUse = shaderProgram.inUse();
+            if(!prgInUse) {
+                shaderProgram.glUseProgram(gl, true);
+            }
+        }
+        glReleaseAllVertexAttributes(gl);
+        glReleaseAllUniforms(gl);
+        if(null!=shaderProgram) {
+            if(releaseProgramToo) {
+                shaderProgram.release(gl, releaseShaderToo);
+            } else if(!prgInUse) {
+                shaderProgram.glUseProgram(gl, false);
+            }
+        }
+    }
+
+    //
+    // Shader attribute handling
+    //
+
+    /**
+     * Binds an attribute to the shader.
+     * This must be done before the program is linked !
+     * n name - 1 idx, where name is a uniq key
+     *
+     * @throws GLException is the program is already linked
+     *
+     * @see #glBindAttribLocation
+     * @see javax.media.opengl.GL2ES2#glBindAttribLocation
+     * @see #glGetAttribLocation
+     * @see javax.media.opengl.GL2ES2#glGetAttribLocation
+     * @see #getAttribLocation
+     * @see #glReplaceShader
+     */
+    public void glBindAttribLocation(GL2ES2 gl, int index, String name) {
+        if(null==shaderProgram) throw new GLException("No program is attached");
+        if(shaderProgram.linked()) throw new GLException("Program is already linked");
+        Integer idx = new Integer(index);
+        if(!attribMap2Idx.containsKey(name)) {
+            attribMap2Idx.put(name, idx);
+            gl.glBindAttribLocation(shaderProgram.program(), index, name);
+        }
+    }
+
+    /**
+     * Gets the index of a shader attribute.
+     * This must be done after the program is linked !
+     *
+     * @return -1 if there is no such attribute available, 
+     *         otherwise >= 0
+     * @throws GLException is the program is not linked
+     *
+     * @see #glBindAttribLocation
+     * @see javax.media.opengl.GL2ES2#glBindAttribLocation
+     * @see #glGetAttribLocation
+     * @see javax.media.opengl.GL2ES2#glGetAttribLocation
+     * @see #getAttribLocation
+     * @see #glReplaceShader
+     */
+    public int glGetAttribLocation(GL2ES2 gl, String name) {
+        if(!shaderProgram.linked()) throw new GLException("Program is not linked");
+        int index = getAttribLocation(name);
+        if(0>index) {
+            index = gl.glGetAttribLocation(shaderProgram.program(), name);
+            if(0<=index) {
+                Integer idx = new Integer(index);
+                attribMap2Idx.put(name, idx);
+            } else if(verbose) {
+                Throwable tX = new Throwable("Info: glGetAttribLocation failed, no location for: "+name+", index: "+index);
+                tX.printStackTrace();
+            }
+        }
+        return index;
+    }
+
+    protected int getAttribLocation(String name) {
+        Integer idx = (Integer) attribMap2Idx.get(name);
+        return (null!=idx)?idx.intValue():-1;
+    }
+
+
+    //
+    // Enabled Vertex Arrays and its data
+    //
+
+    /**
+     * Enable a vertex attribute array
+     *
+     * Even if the attribute is not found in the current shader,
+     * it is stored in this state.
+     *
+     * @returns false, if the name is not found, otherwise true
+     *
+     * @throws GLException if the program is not in use
+     *
+     * @see #glEnableVertexAttribArray
+     * @see #glDisableVertexAttribArray
+     * @see #glVertexAttribPointer
+     * @see #getVertexAttributePointer
+     * @see #glReleaseAllVertexAttributes
+     * @see #glResetAllVertexAttributes
+     * @see #glReplaceShader
+     */
+    public boolean glEnableVertexAttribArray(GL2ES2 gl, String name) {
+        if(!shaderProgram.inUse()) throw new GLException("Program is not in use");
+        enabledVertexAttribArraySet.add(name);
+        int index = glGetAttribLocation(gl, name);
+        if(0>index) {
+            if(verbose) {
+                Throwable tX = new Throwable("Info: glEnableVertexAttribArray failed, no index for: "+name);
+                tX.printStackTrace();
+            }
+            return false;
+        }
+        if(DEBUG) {
+            System.err.println("Info: glEnableVertexAttribArray: "+name);
+        }
+        gl.glEnableVertexAttribArray(index);
+        return true;
+    }
+
+    public boolean isVertexAttribArrayEnabled(String name) {
+        if(!shaderProgram.inUse()) throw new GLException("Program is not in use");
+        return enabledVertexAttribArraySet.contains(name);
+    }
+
+    /**
+     * Disables a vertex attribute array
+     *
+     * Even if the attribute is not found in the current shader,
+     * it is removed from this state.
+     *
+     * @returns false, if the name is not found, otherwise true
+     *
+     * @throws GLException if the program is not in use
+     *
+     * @see #glEnableVertexAttribArray
+     * @see #glDisableVertexAttribArray
+     * @see #glVertexAttribPointer
+     * @see #getVertexAttributePointer
+     * @see #glReleaseAllVertexAttributes
+     * @see #glResetAllVertexAttributes
+     * @see #glReplaceShader
+     */
+    public boolean glDisableVertexAttribArray(GL2ES2 gl, String name) {
+        if(!shaderProgram.inUse()) throw new GLException("Program is not in use");
+        enabledVertexAttribArraySet.remove(name);
+        int index = glGetAttribLocation(gl, name);
+        if(0>index) {
+            if(verbose) {
+                Throwable tX = new Throwable("Info: glDisableVertexAttribArray failed, no index for: "+name);
+                tX.printStackTrace();
+            }
+            return false;
+        }
+        if(DEBUG) {
+            System.err.println("Info: glDisableVertexAttribArray: "+name);
+        }
+        gl.glDisableVertexAttribArray(index);
+        return true;
+    }
+
+    /**
+     * Set the vertex attribute data.
+     * Enable the attribute, if it is not enabled yet.
+     *
+     * Even if the attribute is not found in the current shader,
+     * it is stored in this state.
+     *
+     * @arg data the GLArrayData's name must match the attributes one,
+     *      it's index will be set with the attribute's location,
+     *      if found.
+     *
+     * @returns false, if the name is not found, otherwise true
+     *
+     * @throws GLException if the program is not in use
+     *
+     * @see #glEnableVertexAttribArray
+     * @see #glDisableVertexAttribArray
+     * @see #glVertexAttribPointer
+     * @see #getVertexAttributePointer
+     * @see #glReleaseAllVertexAttributes
+     * @see #glResetAllVertexAttributes
+     * @see #glReplaceShader
+     */
+    public boolean glVertexAttribPointer(GL2ES2 gl, GLArrayData data) {
+        if(!shaderProgram.inUse()) throw new GLException("Program is not in use");
+        if(!enabledVertexAttribArraySet.contains(data.getName())) {
+            if(!glEnableVertexAttribArray(gl, data.getName())) {
+                if(verbose) {
+                    Throwable tX = new Throwable("Info: glVertexAttribPointer: couldn't enable: "+data);
+                    tX.printStackTrace();
+                }
+            }
+        }
+        int index = getAttribLocation(data.getName());
+        if(0>index) {
+            if(verbose) {
+                Throwable tX = new Throwable("Info: glVertexAttribPointer failed, no index for: "+data);
+                tX.printStackTrace();
+            }
+        }
+        data.setLocation(index);
+        vertexAttribMap2Data.put(data.getName(), data);
+        if(0<=index) {
+            // only pass the data, if the attribute exists in the current shader
+            if(DEBUG) {
+                System.err.println("Info: glVertexAttribPointer: "+data);
+            }
+            gl.glVertexAttribPointer(data);
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Get the vertex attribute data, previously set.
+     *
+     * @returns the GLArrayData object, null if not previously set.
+     *
+     * @see #glEnableVertexAttribArray
+     * @see #glDisableVertexAttribArray
+     * @see #glVertexAttribPointer
+     * @see #getVertexAttributePointer
+     * @see #glReleaseAllVertexAttributes
+     * @see #glResetAllVertexAttributes
+     * @see #glReplaceShader
+     */
+    public GLArrayData getVertexAttribPointer(String name) {
+        return (GLArrayData) vertexAttribMap2Data.get(name);
+    }
+
+    /**
+     * Releases all mapped vertex attribute data,
+     * disables all enabled attributes and loses all indices
+     *
+     * @throws GLException is the program is not in use but the shaderProgram is set
+     *
+     * @see #glEnableVertexAttribArray
+     * @see #glDisableVertexAttribArray
+     * @see #glVertexAttribPointer
+     * @see #getVertexAttributePointer
+     * @see #glReleaseAllVertexAttributes
+     * @see #glResetAllVertexAttributes
+     * @see #glResetAllVertexAttributes
+     * @see #glReplaceShader
+     */
+    public void glReleaseAllVertexAttributes(GL2ES2 gl) {
+        if(null!=shaderProgram) {
+            if(!shaderProgram.inUse()) throw new GLException("Program is not in use");
+            for(Iterator iter = vertexAttribMap2Data.keySet().iterator(); iter.hasNext(); ) {
+                if(!glDisableVertexAttribArray(gl, (String) iter.next())) {
+                    throw new GLException("Internal Error: mapped vertex attribute couldn't be disabled");
+                }
+            }
+            for(Iterator iter = enabledVertexAttribArraySet.iterator(); iter.hasNext(); ) {
+                if(!glDisableVertexAttribArray(gl, (String) iter.next())) {
+                    throw new GLException("Internal Error: prev enabled vertex attribute couldn't be disabled");
+                }
+            }
+        }
+        vertexAttribMap2Data.clear();
+        enabledVertexAttribArraySet.clear();
+        attribMap2Idx.clear();
+    }
+        
+    /**
+     * Disables all vertex attribute arrays.
+     *
+     * Their enabled stated will be removed from this state only
+     * if 'removeFromState' is true.
+     *
+     * This method purpose is more for debugging. 
+     *
+     * @throws GLException is the program is not in use but the shaderProgram is set
+     *
+     * @see #glEnableVertexAttribArray
+     * @see #glDisableVertexAttribArray
+     * @see #glVertexAttribPointer
+     * @see #getVertexAttributePointer
+     * @see #glReleaseAllVertexAttributes
+     * @see #glResetAllVertexAttributes
+     * @see #glResetAllVertexAttributes
+     * @see #glReplaceShader
+     */
+    public void glDisableAllVertexAttributeArrays(GL2ES2 gl, boolean removeFromState) {
+        if(!shaderProgram.inUse()) throw new GLException("Program is not in use");
+
+        for(Iterator iter = enabledVertexAttribArraySet.iterator(); iter.hasNext(); ) {
+            String name = (String) iter.next();
+            if(removeFromState) {
+                enabledVertexAttribArraySet.remove(name);
+            }
+            int index = glGetAttribLocation(gl, name);
+            if(0<=index) {
+                gl.glDisableVertexAttribArray(index);
+            }
+        }
+    }
+
+    /**
+     * Reset all previously mapped vertex attribute data,
+     * incl enabling them
+     *
+     * @throws GLException is the program is not in use
+     *
+     * @see #glEnableVertexAttribArray
+     * @see #glDisableVertexAttribArray
+     * @see #glVertexAttribPointer
+     * @see #getVertexAttributePointer
+     * @see #glReleaseAllVertexAttributes
+     * @see #glResetAllVertexAttributes
+     * @see #glReplaceShader
+     */
+    public void glResetAllVertexAttributes(GL2ES2 gl) {
+        if(!shaderProgram.inUse()) throw new GLException("Program is not in use");
+        attribMap2Idx.clear();
+
+        for(Iterator iter = enabledVertexAttribArraySet.iterator(); iter.hasNext(); ) {
+            glEnableVertexAttribArray(gl, (String) iter.next());
+        }
+
+        for(Iterator iter = vertexAttribMap2Data.values().iterator(); iter.hasNext(); ) {
+            glVertexAttribPointer(gl, (GLArrayData) iter.next());
+        }
+    }
+
+    //
+    // Shader Uniform handling
+    //
+
+    /**
+     * Gets the index of a shader uniform.
+     * This must be done when the program is in use !
+     *
+     * @return -1 if there is no such attribute available,
+     *         otherwise >= 0
+
+     * @throws GLException is the program is not linked
+     *
+     * @see #glGetUniformLocation
+     * @see javax.media.opengl.GL2ES2#glGetUniformLocation
+     * @see #getUniformLocation
+     * @see #glReplaceShader
+     */
+    protected int glGetUniformLocation(GL2ES2 gl, String name) {
+        if(!shaderProgram.inUse()) throw new GLException("Program is not in use");
+        int index = getUniformLocation(name);
+        if(0>index) {
+            index = gl.glGetUniformLocation(shaderProgram.program(), name);
+            if(0<=index) {
+                Integer idx = new Integer(index);
+                uniformMap2Idx.put(name, idx);
+            } else if(verbose) {
+                Throwable tX = new Throwable("Info: glUniform failed, no location for: "+name+", index: "+index);
+                tX.printStackTrace();
+            }
+        }
+        return index;
+    }
+
+    protected int getUniformLocation(String name) {
+        Integer idx = (Integer) uniformMap2Idx.get(name);
+        return (null!=idx)?idx.intValue():-1;
+    }
+
+    /**
+     * Set the uniform data.
+     *
+     * Even if the uniform is not found in the current shader,
+     * it is stored in this state.
+     *
+     * @arg data the GLUniforms's name must match the uniform one,
+     *      it's index will be set with the uniforms's location,
+     *      if found.
+     *
+     *
+     * @returns false, if the name is not found, otherwise true
+     *
+     * @throws GLException if the program is not in use
+     *
+     * @see #glGetUniformLocation
+     * @see javax.media.opengl.GL2ES2#glGetUniformLocation
+     * @see #getUniformLocation
+     * @see #glReplaceShader
+     */
+    public boolean glUniform(GL2ES2 gl, GLUniformData data) {
+        if(!shaderProgram.inUse()) throw new GLException("Program is not in use");
+        int location = glGetUniformLocation(gl, data.getName());
+        data.setLocation(location);
+        uniformMap2Data.put(data.getName(), data);
+        if(0<=location) {
+            // only pass the data, if the uniform exists in the current shader
+            if(DEBUG) {
+                System.err.println("Info: glUniform: "+data);
+            }
+            gl.glUniform(data);
+        }
+        return true;
+    }
+
+    /**
+     * Get the uniform data, previously set.
+     *
+     * @returns the GLUniformData object, null if not previously set.
+     */
+    public GLUniformData getUniform(String name) {
+        return (GLUniformData) uniformMap2Data.get(name);
+    }
+
+    /**
+     * Releases all mapped uniform data
+     * and loses all indices
+     *
+     * @throws GLException is the program is not in use
+     */
+    public void glReleaseAllUniforms(GL2ES2 gl) {
+        uniformMap2Data.clear();
+        uniformMap2Idx.clear();
+    }
+        
+    /**
+     * Reset all previously mapped uniform data
+     *
+     * @throws GLException is the program is not in use
+     */
+    public void glResetAllUniforms(GL2ES2 gl) {
+        if(!shaderProgram.inUse()) throw new GLException("Program is not in use");
+        uniformMap2Idx.clear();
+        for(Iterator iter = uniformMap2Data.values().iterator(); iter.hasNext(); ) {
+            glUniform(gl, (GLUniformData) iter.next());
+        }
+    }
+
+    public String toString() {
+        StringBuffer buf = new StringBuffer();
+        buf.append("ShaderState[");
+        buf.append(shaderProgram.toString());
+        buf.append(",EnabledStates: [");
+        for(Iterator iter = enabledVertexAttribArraySet.iterator(); iter.hasNext(); ) {
+            buf.append("\n  ");
+            buf.append((String)iter.next());
+        }
+        buf.append("], [");
+        for(Iterator iter = vertexAttribMap2Data.values().iterator(); iter.hasNext(); ) {
+            buf.append("\n  ");
+            buf.append((GLArrayData) iter.next());
+        }
+        buf.append("], [");
+        for(Iterator iter=uniformMap2Data.values().iterator(); iter.hasNext(); ) {
+            buf.append("\n  ");
+            buf.append((GLUniformData) iter.next());
+        }
+        buf.append("]");
+        return buf.toString();
+    }
+
+    protected static final boolean DEBUG = false;
+    protected boolean verbose = false;
+    protected ShaderProgram shaderProgram=null;
+    protected HashMap attribMap2Idx = new HashMap();
+    protected HashSet enabledVertexAttribArraySet = new HashSet();
+    protected HashMap vertexAttribMap2Data = new HashMap();
+    protected HashMap uniformMap2Idx = new HashMap();
+    protected HashMap uniformMap2Data = new HashMap();
+    protected static ShaderState currentShaderState = null;
+
+}
+