1/**************************************************************************
2 *
3 * Copyright 2008 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include <windows.h>
29
30#define WGL_WGLEXT_PROTOTYPES
31
32#include <GL/gl.h>
33#include <GL/wglext.h>
34
35#include "glapi/glapi.h"
36#include "stw_device.h"
37#include "gldrv.h"
38#include "stw_nopfuncs.h"
39
40#include "util/u_debug.h"
41
42struct stw_extension_entry
43{
44   const char *name;
45   PROC proc;
46};
47
48#define STW_EXTENSION_ENTRY(P) { #P, (PROC) P }
49
50static const struct stw_extension_entry stw_extension_entries[] = {
51
52   /* WGL_ARB_extensions_string */
53   STW_EXTENSION_ENTRY( wglGetExtensionsStringARB ),
54
55   /* WGL_ARB_pbuffer */
56   STW_EXTENSION_ENTRY( wglCreatePbufferARB ),
57   STW_EXTENSION_ENTRY( wglGetPbufferDCARB ),
58   STW_EXTENSION_ENTRY( wglReleasePbufferDCARB ),
59   STW_EXTENSION_ENTRY( wglDestroyPbufferARB ),
60   STW_EXTENSION_ENTRY( wglQueryPbufferARB ),
61
62   /* WGL_ARB_pixel_format */
63   STW_EXTENSION_ENTRY( wglChoosePixelFormatARB ),
64   STW_EXTENSION_ENTRY( wglGetPixelFormatAttribfvARB ),
65   STW_EXTENSION_ENTRY( wglGetPixelFormatAttribivARB ),
66
67   /* WGL_EXT_extensions_string */
68   STW_EXTENSION_ENTRY( wglGetExtensionsStringEXT ),
69
70   /* WGL_EXT_swap_control */
71   STW_EXTENSION_ENTRY( wglGetSwapIntervalEXT ),
72   STW_EXTENSION_ENTRY( wglSwapIntervalEXT ),
73
74   /* WGL_ARB_create_context */
75   STW_EXTENSION_ENTRY( wglCreateContextAttribsARB ),
76
77   /* WGL_ARB_render_texture */
78   STW_EXTENSION_ENTRY( wglBindTexImageARB ),
79   STW_EXTENSION_ENTRY( wglReleaseTexImageARB ),
80   STW_EXTENSION_ENTRY( wglSetPbufferAttribARB ),
81
82   /*  WGL_ARB_make_current_read */
83   STW_EXTENSION_ENTRY( wglMakeContextCurrentARB ),
84   STW_EXTENSION_ENTRY( wglGetCurrentReadDCARB ),
85   { NULL, NULL }
86};
87
88PROC APIENTRY
89DrvGetProcAddress(
90   LPCSTR lpszProc )
91{
92   const struct stw_extension_entry *entry;
93   PROC p;
94
95   if (!stw_dev)
96      return NULL;
97
98   if (lpszProc[0] == 'w' && lpszProc[1] == 'g' && lpszProc[2] == 'l')
99      for (entry = stw_extension_entries; entry->name; entry++)
100         if (strcmp( lpszProc, entry->name ) == 0)
101            return entry->proc;
102
103   if (lpszProc[0] == 'g' && lpszProc[1] == 'l') {
104      p = (PROC) _glapi_get_proc_address(lpszProc);
105      if (p)
106         return p;
107   }
108
109   /* If we get here, we'd normally just return NULL, but since some apps
110    * (like Viewperf12) crash when they try to use the null pointer, try
111    * returning a pointer to a no-op function instead.
112    */
113   p = stw_get_nop_function(lpszProc);
114   if (p) {
115      debug_printf("wglGetProcAddress(\"%s\") returning no-op function\n",
116                   lpszProc);
117      return p;
118   }
119
120   debug_printf("wglGetProcAddress(\"%s\") returning NULL\n", lpszProc);
121   return NULL;
122}
123