1 files changed, 13 insertions, 5 deletions
diff --git a/src/com/jogamp/opencl/CLSubBuffer.java b/src/com/jogamp/opencl/CLSubBuffer.java
index 614dfa80..165df23f 100644
--- a/src/com/jogamp/opencl/CLSubBuffer.java
+++ b/src/com/jogamp/opencl/CLSubBuffer.java
@@ -12,18 +12,18 @@ public class CLSubBuffer<B extends Buffer> extends CLBuffer<B> {
     private CLBuffer<B> parent;
     private final int offset;
 
-    CLSubBuffer(CLBuffer<B> parent, int origin, B directBuffer, long id, int flags) {
-        super(parent.getContext(), directBuffer, id, flags);
+    CLSubBuffer(CLBuffer<B> parent, int origin, int size, B directBuffer, long id, int flags) {
+        super(parent.getContext(), directBuffer, size, id, flags);
         this.parent = parent;
         this.offset = origin;
     }
 
     /**
      * Throws an UnsupportedOperationException since creating sub buffers
-     * from sub buffers is not allowed.
+     * from sub buffers is not allowed as of OpenCL 1.1.
      */
     @Override
-    public CLBuffer<B> createSubBuffer(int origin, int size, Mem... flags) {
+    public CLSubBuffer<B> createSubBuffer(int origin, int size, Mem... flags) {
         throw new UnsupportedOperationException("creating sub buffers from sub buffers is not allowed.");
     }
 
@@ -41,9 +41,17 @@ public class CLSubBuffer<B extends Buffer> extends CLBuffer<B> {
     }
 
     /**
-     * Returns the offset of this sub buffer to its parent.
+     * Returns the offset of this sub buffer to its parent in buffer elements.
      */
     public int getOffset() {
+        int elemSize = buffer==null ? 1 : sizeOfBufferElem(buffer);
+        return offset/elemSize;
+    }
+
+    /**
+     * Returns the offset of this sub buffer to its parent in bytes.
+     */
+    public int getCLOffset() {
         return offset;
     }