1 files changed, 28 insertions, 9 deletions
diff --git a/src/jogl/classes/javax/media/opengl/GLArrayData.java b/src/jogl/classes/javax/media/opengl/GLArrayData.java
index 6c8122f27..448ddd10c 100644
--- a/src/jogl/classes/javax/media/opengl/GLArrayData.java
+++ b/src/jogl/classes/javax/media/opengl/GLArrayData.java
@@ -37,7 +37,6 @@ 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
@@ -76,28 +75,41 @@ public interface GLArrayData {
      * Sets the determined location of the shader attribute
      * This is usually done within ShaderState.
      *
-     * @see com.jogamp.opengl.util.glsl.ShaderState#glVertexAttribPointer(GL2ES2, GLArrayData)
+     * @see com.jogamp.opengl.util.glsl.ShaderState#vertexAttribPointer(GL2ES2, GLArrayData)
      */
     public void setLocation(int v);
 
     /**
-     * Determines wheather the data is server side (VBO),
+     * Determines whether the data is server side (VBO) and enabled,
      * or a client side array (false).
      */
     public boolean isVBO();
 
     /**
-     * The offset, if it's an VBO, otherwise -1
+     * The VBO buffer offset or -1 if not a VBO
      */
-    public long getOffset();
+    public long getVBOOffset();
 
     /**
-     * The VBO name, if it's an VBO, otherwise -1
+     * The VBO name or -1 if not a VBO
      */
     public int getVBOName();
 
     /**
-     * The Buffer holding the data, may be null in case of VBO
+     * The VBO usage or -1 if not a VBO
+     * @return -1 if not a GPU buffer, otherwise {@link GL2ES2#GL_STREAM_DRAW}, {@link GL#GL_STATIC_DRAW} or {@link GL#GL_DYNAMIC_DRAW}
+     */
+    public int getVBOUsage();
+
+    /**
+     * The VBO target or -1 if not a VBO
+     * @return -1 if not a GPU buffer, otherwise {@link GL#GL_ARRAY_BUFFER} or {@link GL#GL_ELEMENT_ARRAY_BUFFER}
+     */
+    public int getVBOTarget();
+
+    
+    /**
+     * The Buffer holding the data, may be null if a GPU buffer without client bound data
      */
     public Buffer getBuffer();
 
@@ -112,14 +124,21 @@ public interface GLArrayData {
     public int getComponentType();
 
     /**
-     * The components size in bytes
+     * The component's size in bytes
      */
     public int getComponentSize();
 
     /**
-     * Return the number of elements.
+     * The current number of used elements.<br>
+     * In case the buffer's position is 0 (sealed, flipped), it's based on it's limit instead of it's position.
      */
     public int getElementNumber();
+    
+    /**
+     * The current number of used bytes.<br>
+     * In case the buffer's position is 0 (sealed, flipped), it's based on it's limit instead of it's position.
+     */
+    public int getByteSize();
 
     /**
      * True, if GL shall normalize fixed point data while converting