sync code with last improvements from OpenBSD

xserver/hw/xnest/XNPixmap.h

@@ -0,0 +1,40 @@
+/*
+
+Copyright 1993 by Davor Matic
+
+Permission to use, copy, modify, distribute, and sell this software
+and its documentation for any purpose is hereby granted without fee,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation.  Davor Matic makes no representations about
+the suitability of this software for any purpose.  It is provided "as
+is" without express or implied warranty.
+
+*/
+
+#ifndef XNESTPIXMAP_H
+#define XNESTPIXMAP_H
+
+extern DevPrivateKeyRec xnestPixmapPrivateKeyRec;
+
+#define xnestPixmapPrivateKey (&xnestPixmapPrivateKeyRec)
+
+typedef struct {
+    Pixmap pixmap;
+} xnestPrivPixmap;
+
+#define xnestPixmapPriv(pPixmap) ((xnestPrivPixmap *) \
+    dixLookupPrivate(&(pPixmap)->devPrivates, xnestPixmapPrivateKey))
+
+#define xnestPixmap(pPixmap) (xnestPixmapPriv(pPixmap)->pixmap)
+
+#define xnestSharePixmap(pPixmap) ((pPixmap)->refcnt++)
+
+PixmapPtr xnestCreatePixmap(ScreenPtr pScreen, int width, int height,
+                            int depth, unsigned usage_hint);
+Bool xnestDestroyPixmap(PixmapPtr pPixmap);
+Bool xnestModifyPixmapHeader(PixmapPtr pPixmap, int width, int height, int depth,
+                             int bitsPerPixel, int devKind, void *pPixData);
+RegionPtr xnestPixmapToRegion(PixmapPtr pPixmap);
+
+#endif                          /* XNESTPIXMAP_H */