| 1 | /* xscreensaver, Copyright (c) 1998, 1999 by Jamie Zawinski <jwz@jwz.org> |
| 2 | * |
| 3 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 4 | * documentation for any purpose is hereby granted without fee, provided that |
| 5 | * the above copyright notice appear in all copies and that both that |
| 6 | * copyright notice and this permission notice appear in supporting |
| 7 | * documentation. No representations are made about the suitability of this |
| 8 | * software for any purpose. It is provided "as is" without express or |
| 9 | * implied warranty. |
| 10 | */ |
| 11 | |
| 12 | /* The XDBE (Double Buffering) extension is pretty tricky to use, since you |
| 13 | can get X errors at inconvenient times during initialization. This file |
| 14 | contains a utility routine to make it easier to deal with. |
| 15 | */ |
| 16 | |
| 17 | #ifndef __XSCREENSAVER_XDBE_H__ |
| 18 | |
| 19 | #ifdef HAVE_DOUBLE_BUFFER_EXTENSION |
| 20 | |
| 21 | # include <X11/extensions/Xdbe.h> |
| 22 | |
| 23 | extern XdbeBackBuffer xdbe_get_backbuffer (Display *, Window, XdbeSwapAction); |
| 24 | |
| 25 | #endif /* HAVE_DOUBLE_BUFFER_EXTENSION */ |
| 26 | |
| 27 | #endif /* __XSCREENSAVER_XDBE_H__ */ |