/
glut_ext.c
218 lines (204 loc) · 9.48 KB
/
glut_ext.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
/* Copyright (c) Mark J. Kilgard, 1994, 1997. */
/* 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. */
#include <stdlib.h>
#include <string.h>
#if defined(__APPLE__)
#include "glut.h"
#include "macx_utilities.h"
#include <OpenGL/CGLCurrent.h>
#else
#include "glutint.h"
#endif
/* CENTRY */
int APIENTRY
glutExtensionSupported(const char *extension)
{
const GLubyte *extensions = NULL;
const GLubyte *start;
GLubyte *where, *terminator;
/* Extension names should not have spaces. */
where = (GLubyte *) strchr(extension, ' ');
if (where || *extension == '\0')
return 0;
/* To correctly handle apps that create/delete multiple contexts
(possibly malloc'd at the same address), we must query every time. */
extensions = glGetString(GL_EXTENSIONS);
/* It takes a bit of care to be fool-proof about parsing the
OpenGL extensions string. Don't be fooled by sub-strings,
etc. */
start = extensions;
for (;;) {
/* If your application crashes in the strstr routine below,
you are probably calling glutExtensionSupported without
having a current window. Calling glGetString without
a current OpenGL context has unpredictable results.
Please fix your program. */
where = (GLubyte *) strstr((const char *) start, extension);
if (!where)
break;
terminator = where + strlen(extension);
if (where == start || *(where - 1) == ' ') {
if (*terminator == ' ' || *terminator == '\0') {
return 1;
}
}
start = terminator;
}
return 0;
}
struct name_address_pair {
const char *name;
const void *address;
};
#if !defined(__APPLE__)
const static struct name_address_pair glut_functions[] = {
{ "glutInit", (const void *) glutInit },
{ "glutInitDisplayMode", (const void *) glutInitDisplayMode },
{ "glutInitDisplayString", (const void *) glutInitDisplayString },
{ "glutInitWindowPosition", (const void *) glutInitWindowPosition },
{ "glutInitWindowSize", (const void *) glutInitWindowSize },
{ "glutMainLoop", (const void *) glutMainLoop },
{ "glutCreateWindow", (const void *) glutCreateWindow },
{ "glutCreateSubWindow", (const void *) glutCreateSubWindow },
{ "glutDestroyWindow", (const void *) glutDestroyWindow },
{ "glutPostRedisplay", (const void *) glutPostRedisplay },
{ "glutPostWindowRedisplay", (const void *) glutPostWindowRedisplay },
{ "glutSwapBuffers", (const void *) glutSwapBuffers },
{ "glutGetWindow", (const void *) glutGetWindow },
{ "glutSetWindow", (const void *) glutSetWindow },
{ "glutSetWindowTitle", (const void *) glutSetWindowTitle },
{ "glutSetIconTitle", (const void *) glutSetIconTitle },
{ "glutPositionWindow", (const void *) glutPositionWindow },
{ "glutReshapeWindow", (const void *) glutReshapeWindow },
{ "glutPopWindow", (const void *) glutPopWindow },
{ "glutPushWindow", (const void *) glutPushWindow },
{ "glutIconifyWindow", (const void *) glutIconifyWindow },
{ "glutShowWindow", (const void *) glutShowWindow },
{ "glutHideWindow", (const void *) glutHideWindow },
{ "glutFullScreen", (const void *) glutFullScreen },
{ "glutSetCursor", (const void *) glutSetCursor },
{ "glutWarpPointer", (const void *) glutWarpPointer },
{ "glutEstablishOverlay", (const void *) glutEstablishOverlay },
{ "glutRemoveOverlay", (const void *) glutRemoveOverlay },
{ "glutUseLayer", (const void *) glutUseLayer },
{ "glutPostOverlayRedisplay", (const void *) glutPostOverlayRedisplay },
{ "glutPostWindowOverlayRedisplay", (const void *) glutPostWindowOverlayRedisplay },
{ "glutShowOverlay", (const void *) glutShowOverlay },
{ "glutHideOverlay", (const void *) glutHideOverlay },
{ "glutCreateMenu", (const void *) glutCreateMenu },
{ "glutDestroyMenu", (const void *) glutDestroyMenu },
{ "glutGetMenu", (const void *) glutGetMenu },
{ "glutSetMenu", (const void *) glutSetMenu },
{ "glutAddMenuEntry", (const void *) glutAddMenuEntry },
{ "glutAddSubMenu", (const void *) glutAddSubMenu },
{ "glutChangeToMenuEntry", (const void *) glutChangeToMenuEntry },
{ "glutChangeToSubMenu", (const void *) glutChangeToSubMenu },
{ "glutRemoveMenuItem", (const void *) glutRemoveMenuItem },
{ "glutAttachMenu", (const void *) glutAttachMenu },
{ "glutDetachMenu", (const void *) glutDetachMenu },
{ "glutDisplayFunc", (const void *) glutDisplayFunc },
{ "glutReshapeFunc", (const void *) glutReshapeFunc },
{ "glutKeyboardFunc", (const void *) glutKeyboardFunc },
{ "glutMouseFunc", (const void *) glutMouseFunc },
{ "glutMotionFunc", (const void *) glutMotionFunc },
{ "glutPassiveMotionFunc", (const void *) glutPassiveMotionFunc },
{ "glutEntryFunc", (const void *) glutEntryFunc },
{ "glutVisibilityFunc", (const void *) glutVisibilityFunc },
{ "glutIdleFunc", (const void *) glutIdleFunc },
{ "glutTimerFunc", (const void *) glutTimerFunc },
{ "glutMenuStateFunc", (const void *) glutMenuStateFunc },
{ "glutSpecialFunc", (const void *) glutSpecialFunc },
{ "glutSpaceballMotionFunc", (const void *) glutSpaceballMotionFunc },
{ "glutSpaceballRotateFunc", (const void *) glutSpaceballRotateFunc },
{ "glutSpaceballButtonFunc", (const void *) glutSpaceballButtonFunc },
{ "glutButtonBoxFunc", (const void *) glutButtonBoxFunc },
{ "glutDialsFunc", (const void *) glutDialsFunc },
{ "glutTabletMotionFunc", (const void *) glutTabletMotionFunc },
{ "glutTabletButtonFunc", (const void *) glutTabletButtonFunc },
{ "glutMenuStatusFunc", (const void *) glutMenuStatusFunc },
{ "glutOverlayDisplayFunc", (const void *) glutOverlayDisplayFunc },
{ "glutWindowStatusFunc", (const void *) glutWindowStatusFunc },
{ "glutKeyboardUpFunc", (const void *) glutKeyboardUpFunc },
{ "glutSpecialUpFunc", (const void *) glutSpecialUpFunc },
{ "glutJoystickFunc", (const void *) glutJoystickFunc },
{ "glutSetColor", (const void *) glutSetColor },
{ "glutGetColor", (const void *) glutGetColor },
{ "glutCopyColormap", (const void *) glutCopyColormap },
{ "glutGet", (const void *) glutGet },
{ "glutDeviceGet", (const void *) glutDeviceGet },
{ "glutExtensionSupported", (const void *) glutExtensionSupported },
{ "glutGetModifiers", (const void *) glutGetModifiers },
{ "glutLayerGet", (const void *) glutLayerGet },
{ "glutGetProcAddress", (const void *) glutGetProcAddress },
{ "glutBitmapCharacter", (const void *) glutBitmapCharacter },
{ "glutBitmapWidth", (const void *) glutBitmapWidth },
{ "glutStrokeCharacter", (const void *) glutStrokeCharacter },
{ "glutStrokeWidth", (const void *) glutStrokeWidth },
{ "glutBitmapLength", (const void *) glutBitmapLength },
{ "glutStrokeLength", (const void *) glutStrokeLength },
{ "glutWireSphere", (const void *) glutWireSphere },
{ "glutSolidSphere", (const void *) glutSolidSphere },
{ "glutWireCone", (const void *) glutWireCone },
{ "glutSolidCone", (const void *) glutSolidCone },
{ "glutWireCube", (const void *) glutWireCube },
{ "glutSolidCube", (const void *) glutSolidCube },
{ "glutWireTorus", (const void *) glutWireTorus },
{ "glutSolidTorus", (const void *) glutSolidTorus },
{ "glutWireDodecahedron", (const void *) glutWireDodecahedron },
{ "glutSolidDodecahedron", (const void *) glutSolidDodecahedron },
{ "glutWireTeapot", (const void *) glutWireTeapot },
{ "glutSolidTeapot", (const void *) glutSolidTeapot },
{ "glutWireOctahedron", (const void *) glutWireOctahedron },
{ "glutSolidOctahedron", (const void *) glutSolidOctahedron },
{ "glutWireTetrahedron", (const void *) glutWireTetrahedron },
{ "glutSolidTetrahedron", (const void *) glutSolidTetrahedron },
{ "glutWireIcosahedron", (const void *) glutWireIcosahedron },
{ "glutSolidIcosahedron", (const void *) glutSolidIcosahedron },
{ "glutVideoResizeGet", (const void *) glutVideoResizeGet },
{ "glutSetupVideoResizing", (const void *) glutSetupVideoResizing },
{ "glutStopVideoResizing", (const void *) glutStopVideoResizing },
{ "glutVideoResize", (const void *) glutVideoResize },
{ "glutVideoPan", (const void *) glutVideoPan },
{ "glutReportErrors", (const void *) glutReportErrors },
{ "glutIgnoreKeyRepeat", (const void *) glutIgnoreKeyRepeat },
{ "glutSetKeyRepeat", (const void *) glutSetKeyRepeat },
{ "glutForceJoystickFunc", (const void *) glutForceJoystickFunc },
{ "glutGameModeString", (const void *) glutGameModeString },
{ "glutEnterGameMode", (const void *) glutEnterGameMode },
{ "glutLeaveGameMode", (const void *) glutLeaveGameMode },
{ "glutGameModeGet", (const void *) glutGameModeGet },
{ NULL, NULL }
};
#endif // !defined(__APPLE__)
/* XXX This isn't an official GLUT function, yet */
void * APIENTRY
glutGetProcAddress(const char *procName)
{
#if defined(__APPLE__)
return __glutGetGLProcAddress(procName);
#else
if(procName[0] == 'g' &&
procName[1] == 'l' &&
procName[2] == 'u' &&
procName[3] == 't')
{
/* Try GLUT functions first */
int i;
for (i = 0; glut_functions[i].name; i++) {
if (strcmp(glut_functions[i].name+4, procName+4) == 0)
return (void *) glut_functions[i].address;
}
}
/* Try core GL functions */
#if defined(_WIN32)
return (void *) wglGetProcAddress((LPCSTR) procName);
#elif defined(GLX_ARB_get_proc_address)
return (void *) glXGetProcAddressARB((const GLubyte *) procName);
#else
return NULL;
#endif
#endif
}
/* ENDCENTRY */