diff --git a/vncviewer/OSXPixelBuffer.cxx b/vncviewer/OSXPixelBuffer.cxx
new file mode 100644
index 0000000..b5882d7
--- /dev/null
+++ b/vncviewer/OSXPixelBuffer.cxx
@@ -0,0 +1,104 @@
+/* Copyright 2011 Pierre Ossman <ossman@cendio.se> for Cendio AB
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+#include <assert.h>
+
+#include <ApplicationServices/ApplicationServices.h>
+
+#include <FL/Fl_Window.H>
+#include <FL/x.H>
+
+#include <rfb/LogWriter.h>
+#include <rfb/Exception.h>
+
+#include "OSXPixelBuffer.h"
+
+using namespace rfb;
+
+static rfb::LogWriter vlog("PlatformPixelBuffer");
+
+PlatformPixelBuffer::PlatformPixelBuffer(int width, int height) :
+  ManagedPixelBuffer(rfb::PixelFormat(32, 24, false, true,
+                                      255, 255, 255, 16, 8, 0),
+                     width, height),
+  image(NULL)
+{
+  CGColorSpaceRef lut;
+  CGDataProviderRef provider;
+
+  lut = CGColorSpaceCreateDeviceRGB();
+  assert(lut);
+  provider = CGDataProviderCreateWithData(NULL, data, datasize, NULL);
+  assert(provider);
+
+  image = CGImageCreate(width, height, 8, 32, width*4, lut,
+                        kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder32Little,
+                        provider, NULL, false, kCGRenderingIntentDefault);
+  assert(image);
+
+  CGDataProviderRelease(provider);
+  CGColorSpaceRelease(lut);
+}
+
+
+PlatformPixelBuffer::~PlatformPixelBuffer()
+{
+  CGImageRelease((CGImageRef)image);
+}
+
+
+void PlatformPixelBuffer::draw(int src_x, int src_y, int x, int y, int w, int h)
+{
+  CGRect rect;
+  CGContextRef gc;
+  CGAffineTransform at;
+
+  gc = (CGContextRef)fl_gc;
+
+  CGContextSaveGState(gc);
+
+  // We have to use clipping to partially display an image
+
+  rect.origin.x = x - 0.5;
+  rect.origin.y = y - 0.5;
+  rect.size.width = w;
+  rect.size.height = h;
+
+  CGContextClipToRect(gc, rect);
+ 
+  // Oh the hackiness that is OS X image handling...
+  // The CGContextDrawImage() routine magically flips the images and offsets
+  // them by 0.5,0.5 in order to compensate for OS X unfamiliar coordinate
+  // system. But this breaks horribly when you set up the CTM to get the
+  // more familiar top-down system (which FLTK does), meaning we have to
+  // reset the CTM back to the identity matrix and calculate new origin
+  // coordinates.
+
+  at = CGContextGetCTM(gc);
+  CGContextScaleCTM(gc, 1, -1);
+  CGContextTranslateCTM(gc, -at.tx, -at.ty);
+
+  rect.origin.x = x - src_x;
+  rect.origin.y = Fl_Window::current()->h() - (y - src_y);
+  rect.size.width = width();
+  rect.size.height = -height(); // Negative height does _not_ flip the image
+
+  CGContextDrawImage(gc, rect, (CGImageRef)image);
+
+  CGContextRestoreGState(gc);
+}