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
|
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
int main (int32_t argc, char* argv[]) {
bool res;
EGLDisplay egl_dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
res = eglInitialize(egl_dpy, NULL, NULL);
assert(res);
const char *egl_extension_st = eglQueryString(egl_dpy, EGL_EXTENSIONS);
assert(strstr(egl_extension_st, "EGL_KHR_create_context") != NULL);
assert(strstr(egl_extension_st, "EGL_KHR_surfaceless_context") != NULL);
static const EGLint config_attribs[] = {
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE
};
EGLConfig cfg;
EGLint count;
res = eglChooseConfig(egl_dpy, config_attribs, &cfg, 1, &count);
assert(res);
res = eglBindAPI(EGL_OPENGL_ES_API);
assert(res);
static const EGLint attribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 3,
EGL_NONE
};
EGLContext ctx = eglCreateContext(egl_dpy,
cfg,
EGL_NO_CONTEXT,
attribs);
assert(ctx != EGL_NO_CONTEXT);
res = eglMakeCurrent(egl_dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, ctx);
assert(res);
eglDestroyContext(egl_dpy, ctx);
eglTerminate(egl_dpy);
return 0;
}
|
