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
|
#include "../include/mgl/glx.h"
#include <dlfcn.h>
#include <stdio.h>
#include <GL/glx.h>
static void* dlsym_print_fail(void *handle, const char *name) {
dlerror();
void *sym = dlsym(handle, name);
char *err_str = dlerror();
if(!sym)
fprintf(stderr, "dlsym(handle, \"%s\") failed, error: %s\n", name, err_str ? err_str : "(null)");
return sym;
}
int mgl_glx_load(mgl_glx *self) {
const char *glx_path = "/usr/lib/libGLX.so.0";
self->handle = dlopen(glx_path, RTLD_LAZY);
if(!self->handle) {
fprintf(stderr, "dlopen(\"%s\", RTLD_LAZY) failed\n", glx_path);
return -1;
}
self->glXGetFBConfigs = (GLXFBConfig* (*)(Display*, int, int*))dlsym_print_fail(self->handle, "glXGetFBConfigs");
if(!self->glXGetFBConfigs) {
mgl_glx_unload(self);
return -1;
}
return 0;
}
void mgl_glx_unload(mgl_glx *self) {
if(self->handle) {
dlclose(self->handle);
self->handle = NULL;
}
}
|
