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diff --git a/nx-X11/extras/Mesa_6.4.2/src/glut/glx/layerutil.h b/nx-X11/extras/Mesa_6.4.2/src/glut/glx/layerutil.h
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index 000000000..8f580afe3
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+++ b/nx-X11/extras/Mesa_6.4.2/src/glut/glx/layerutil.h
@@ -0,0 +1,59 @@
+#ifndef __layerutil_h__
+#define __layerutil_h__
+
+/* Copyright (c) Mark J. Kilgard, 1993, 1994. */
+
+/* This program is freely distributable without licensing fees
+ and is provided without guarantee or warrantee expressed or
+ implied. This program is -not- in the public domain. */
+
+/* Based on XLayerUtil.h: Revision: 1.3 */
+
+#ifdef __VMS
+#include <GL/vms_x_fix.h>
+#endif
+
+#if !defined(_WIN32)
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/Xmd.h>
+#endif /* !_WIN32 */
+
+/* Transparent type values */
+/* None 0 */
+#define TransparentPixel 1
+#define TransparentMask 2
+
+/* layered visual info template flags */
+#define VisualLayerMask 0x200
+#define VisualTransparentType 0x400
+#define VisualTransparentValue 0x800
+#define VisualAllLayerMask 0xFFF
+
+/* layered visual info structure */
+typedef struct _XLayerVisualInfo {
+ XVisualInfo vinfo;
+ long layer;
+ long type;
+ unsigned long value;
+} XLayerVisualInfo;
+
+/* SERVER_OVERLAY_VISUALS property element */
+typedef struct _OverlayInfo {
+ /* Avoid 64-bit portability problems by being careful to use
+ longs due to the way XGetWindowProperty is specified. Note
+ that these parameters are passed as CARD32s over X
+ protocol. */
+ long overlay_visual;
+ long transparent_type;
+ long value;
+ long layer;
+} OverlayInfo;
+
+extern int __glutGetTransparentPixel(Display *, XVisualInfo *);
+extern XLayerVisualInfo *__glutXGetLayerVisualInfo(Display *,
+ long, XLayerVisualInfo *, int *);
+extern Status __glutXMatchLayerVisualInfo(Display *,
+ int, int, int, int, XLayerVisualInfo *);
+
+#endif /* __layerutil_h__ */