1/*
2 * File: wgl_ext_api.c
3 * Purpose: Wrapper functions for Win32 OpenGL wgl extension functions
4 *
5 * Authors: Jon TURNEY
6 *
7 * Copyright (c) Jon TURNEY 2009
8 *
9 *
10 * Permission is hereby granted, free of charge, to any person obtaining a
11 * copy of this software and associated documentation files (the "Software"),
12 * to deal in the Software without restriction, including without limitation
13 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
14 * and/or sell copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following conditions:
16 *
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26 * DEALINGS IN THE SOFTWARE.
27 */
28
29#ifdef HAVE_XWIN_CONFIG_H
30#include <xwin-config.h>
31#endif
32
33#include <X11/Xwindows.h>
34#include <GL/gl.h>
35#include <GL/glext.h>
36#include <glx/glxserver.h>
37#include <glx/glxext.h>
38#include "wglext.h"
39#include <wgl_ext_api.h>
40#include "glwindows.h"
41
42#define RESOLVE_DECL(type) \
43    static type type##proc = NULL;
44
45#define PRERESOLVE(type, symbol) \
46    type##proc = (type)wglGetProcAddress(symbol); \
47    if (type##proc == NULL) \
48        ErrorF("wglwrap: Can't resolve \"%s\"\n", symbol); \
49    else \
50        ErrorF("wglwrap: Resolved \"%s\"\n", symbol);
51
52#define RESOLVE_RET(type, symbol, retval) \
53  if (type##proc == NULL) { \
54  __glXErrorCallBack(0); \
55  return retval; \
56      }
57
58#define RESOLVE(procname, symbol) RESOLVE_RET(procname, symbol,)
59
60#define RESOLVED_PROC(type) type##proc
61
62/*
63 * Include generated cdecl wrappers for stdcall WGL functions
64 *
65 * There are extensions to the wgl*() API as well; again we call
66 * these functions by using wglGetProcAddress() to get a pointer
67 * to the function, and wrapping it for cdecl/stdcall conversion
68 *
69 * We arrange to resolve the functions up front, as they need a
70 * context to work, as we like to use them to be able to select
71 * a context.  Again, this assumption fails badly on multimontor
72 * systems...
73 */
74
75#include "generated_wgl_wrappers.c"
76