--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uiacceltk/hitchcock/coretoolkit/rendervg10/src/HuiFxVg10RenderbufferBase.cpp	Tue Feb 02 07:56:43 2010 +0200
@@ -0,0 +1,64 @@
+/*
+* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:   
+*
+*/
+
+
+
+#include "HuiFxVg10RenderbufferBase.h"
+
+VGImage CHuiFxVg10RenderbufferBase::AcquireSubImage(const TRect& aRect)
+    {
+    TSize size = Size();
+    TRect parentImageRect(Position(),Size());
+    // Clip sub image rect to always be inside the buffer (to avoid error in vgChildImage) 
+    TRect clippedRect(aRect);
+    clippedRect.Intersection(parentImageRect); 
+      
+    if (clippedRect.iTl.iX == 0 && clippedRect.iTl.iY == 0 && clippedRect.Size() == size)
+        {
+        return Image(); // buffer is exactly the size of the rectangle and correctly positioned --- no need for childimage.
+        }
+    else
+        {
+        TInt x;
+        TInt y;
+        if(BufferType() == EBufferTypeOffscreen) 
+            {
+            x = 0;
+            y = 0;
+            }
+        else
+            {
+            x = clippedRect.iTl.iX;
+            y = size.iHeight - clippedRect.iBr.iY;    // Note: vertically flipped coordinate system. 
+                                                // aRect is in Hitchcock coordinates (top-left 0,0)
+                                                // but y is in VG coordinates (bottom-left 0,0).
+            }
+        VGImage ret = vgChildImage(Image(), x, y, clippedRect.Size().iWidth, clippedRect.Size().iHeight);
+        
+        HUIFX_VG_INVARIANT();
+        return ret;
+        }
+    }
+
+void CHuiFxVg10RenderbufferBase::ReleaseSubImage(VGImage aImage)
+    {
+    if (aImage != Image())
+        {
+        vgDestroyImage(aImage);
+        HUIFX_VG_INVARIANT();
+        }
+    }