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diff --git a/src/gallium/auxiliary/pipebuffer/pb_winsys.h b/src/gallium/auxiliary/pipebuffer/pb_winsys.h
new file mode 100644
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@@ -0,0 +1,79 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMWare, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/**
+ * @file
+ * Drop-in replacements for winsys buffer callbacks.
+ *
+ * The requirement to use this functions is that all pipe_buffers must be in
+ * fact pb_buffers.
+ * 
+ * @author Jose Fonseca <jfonseca@vmware.com>
+ */
+
+#ifndef PB_WINSYS_H_
+#define PB_WINSYS_H_
+
+
+#include "pipe/p_compiler.h"
+#include "pipe/p_debug.h"
+#include "pipe/p_state.h"
+#include "pipe/p_inlines.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+struct pipe_buffer *
+pb_winsys_user_buffer_create(struct pipe_winsys *winsys,
+			     void *data, 
+			     unsigned bytes);
+                                
+void *
+pb_winsys_buffer_map(struct pipe_winsys *winsys,
+		     struct pipe_buffer *buf,
+		     unsigned flags);
+
+void
+pb_winsys_buffer_unmap(struct pipe_winsys *winsys,
+		       struct pipe_buffer *buf);
+
+void
+pb_winsys_buffer_destroy(struct pipe_winsys *winsys,
+			 struct pipe_buffer *buf);
+
+void 
+pb_init_winsys(struct pipe_winsys *winsys);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*PB_WINSYS_H_*/