1 /* Copyright © 2013, Intel Corporation
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 /* Perform some simple drawing via OpenGL as follows:
24 * 1. Using GLX to construct an OpenGL context
25 * 2. By directly linking with libGL.so
26 * 3. By using glXGetProcAddressARB to lookup OpenGL functions
29 #define GL_GLEXT_PROTOTYPES
38 /* The OpenGL header files give typedefs for the types of all
39 * functions provided by etensisons. Here, though, we're using
40 * glxGetProcAddressARB to lookup core functions, so we provide our
42 typedef void (*FIPS_GLCLEAR_FN)(GLbitfield);
43 FIPS_GLCLEAR_FN my_glClear;
45 typedef void (*FIPS_GLCLEARCOLOR_FN)(GLclampf, GLclampf, GLclampf, GLclampf);
46 FIPS_GLCLEARCOLOR_FN my_glClearColor;
48 typedef void (*FIPS_GLLOADIDENTITY_FN)(void);
49 FIPS_GLLOADIDENTITY_FN my_glLoadIdentity;
51 typedef void (*FIPS_GLMATRIXMODE_FN)(GLenum);
52 FIPS_GLMATRIXMODE_FN my_glMatrixMode;
54 typedef void (*FIPS_GLORTHO_FN)(GLdouble, GLdouble, GLdouble, GLdouble, GLdouble, GLdouble);
55 FIPS_GLORTHO_FN my_glOrtho;
57 typedef void (*FIPS_GLVIEWPORT_FN)(GLint, GLint, GLsizei, GLsizei);
58 FIPS_GLVIEWPORT_FN my_glViewport;
60 typedef XVisualInfo* (*FIPS_GLXCHOOSEVISUAL_FN)(Display *, int, int *);
61 FIPS_GLXCHOOSEVISUAL_FN my_glXChooseVisual;
63 typedef GLXContext (*FIPS_GLXCREATECONTEXT_FN)(Display *, XVisualInfo *, GLXContext, Bool);
64 FIPS_GLXCREATECONTEXT_FN my_glXCreateContext;
66 typedef void (*FIPS_GLXDESTROYCONTEXT_FN)(Display *, GLXContext);
67 FIPS_GLXDESTROYCONTEXT_FN my_glXDestroyContext;
69 typedef Bool (*FIPS_GLXMAKECURRENT_FN)(Display *, GLXDrawable, GLXContext);
70 FIPS_GLXMAKECURRENT_FN my_glXMakeCurrent;
72 typedef void (*FIPS_GLXSWAPBUFFERS_FN)(Display *, GLXDrawable);
73 FIPS_GLXSWAPBUFFERS_FN my_glXSwapBuffers;
75 #define HANDLE_EVENTS_GL_PREFIX my_
76 #include "handle-events.c"
79 resolve_symbols (void)
81 my_glClear = (FIPS_GLCLEAR_FN) glXGetProcAddressARB ((GLubyte*) "glClear");
82 if (my_glClear == NULL) {
83 fprintf (stderr, "Failed to glXGetProcAddressARB glClear\n");
87 my_glClearColor = (FIPS_GLCLEARCOLOR_FN) glXGetProcAddressARB ((GLubyte*) "glClearColor");
88 if (my_glClearColor == NULL) {
89 fprintf (stderr, "Failed to glXGetProcAddressARB glClearColor\n");
93 my_glLoadIdentity = (FIPS_GLLOADIDENTITY_FN) glXGetProcAddressARB ((GLubyte*) "glLoadIdentity");
94 if (my_glLoadIdentity == NULL) {
95 fprintf (stderr, "Failed to glXGetProcAddressARB glLoadIdentity\n");
99 my_glMatrixMode = (FIPS_GLMATRIXMODE_FN) glXGetProcAddressARB ((GLubyte*) "glMatrixMode");
100 if (my_glMatrixMode == NULL) {
101 fprintf (stderr, "Failed to glXGetProcAddressARB glMatrixMode\n");
105 my_glOrtho = (FIPS_GLORTHO_FN) glXGetProcAddressARB ((GLubyte*) "glOrtho");
106 if (my_glOrtho == NULL) {
107 fprintf (stderr, "Failed to glXGetProcAddressARB glOrtho\n");
111 my_glViewport = (FIPS_GLVIEWPORT_FN) glXGetProcAddressARB ((GLubyte*) "glViewport");
112 if (my_glViewport == NULL) {
113 fprintf (stderr, "Failed to glXGetProcAddressARB glViewport\n");
117 my_glXChooseVisual = (FIPS_GLXCHOOSEVISUAL_FN) glXGetProcAddressARB ((GLubyte*) "glXChooseVisual");
118 if (my_glXChooseVisual == NULL) {
119 fprintf (stderr, "Failed to glXGetProcAddressARB glXChooseVisual\n");
123 my_glXCreateContext = (FIPS_GLXCREATECONTEXT_FN) glXGetProcAddressARB ((GLubyte*) "glXCreateContext");
124 if (my_glXCreateContext == NULL) {
125 fprintf (stderr, "Failed to glXGetProcAddressARB glXCreateContext\n");
129 my_glXDestroyContext = (FIPS_GLXDESTROYCONTEXT_FN) glXGetProcAddressARB ((GLubyte*) "glXDestroyContext");
130 if (my_glXDestroyContext == NULL) {
131 fprintf (stderr, "Failed to glXGetProcAddressARB glXDestroyContext\n");
135 my_glXMakeCurrent = (FIPS_GLXMAKECURRENT_FN) glXGetProcAddressARB ((GLubyte*) "glXMakeCurrent");
136 if (my_glXMakeCurrent == NULL) {
137 fprintf (stderr, "Failed to glXGetProcAddressARB glXMakeCurrent\n");
141 my_glXSwapBuffers = (FIPS_GLXSWAPBUFFERS_FN) glXGetProcAddressARB ((GLubyte*) "glXSwapBuffers");
142 if (my_glXSwapBuffers == NULL) {
143 fprintf (stderr, "Failed to glXGetProcAddressARB glXSwapBuffers\n");
154 XVisualInfo *visual_info;
158 dpy = util_x11_init_display ();
160 create_context (dpy, &ctx, &visual_info);
162 window = util_x11_init_window (dpy, visual_info);
164 handle_events (dpy, ctx, window);
166 util_x11_fini_window (dpy, window);
168 util_x11_fini_display (dpy);