1void window_create
(void)
2{
3 if(!al_init()) ERR
("failed to initialize allegro!\n");
4
5 uint32_t version
= al_get_allegro_version();
6 unsigned int major
= version
>> 24;
7 unsigned int minor
= (version
>> 16) & 255;
8 unsigned int revision
= (version
>> 8) & 255;
9 unsigned int release
= version
& 255;
10 std::cout
<< "Allegro version: "
11 << major
<< "." << minor
<< "." << revision
<< "." << release
<< "\n";
12
13 al_install_keyboard();
14
15 timer
= al_create_timer(1.
0 / 30.
0);
16 queue
= al_create_event_queue();
17
18 al_set_new_display_flags(ALLEGRO_OPENGL
|
19 ALLEGRO_WINDOWED
| ALLEGRO_RESIZABLE
);
20 al_set_new_display_option(ALLEGRO_OPENGL_MAJOR_VERSION,
3, ALLEGRO_REQUIRE
);
21 al_set_new_display_option(ALLEGRO_OPENGL_MINOR_VERSION,
2, ALLEGRO_REQUIRE
);
22 display
= al_create_display(640,
480);
23 if(nullptr
== display
) ERR
("failed to create display!\n");
24 al_set_current_opengl_context(display
);
25
26 al_register_event_source(queue,
al_get_keyboard_event_source());
27 al_register_event_source(queue,
al_get_timer_event_source(timer
));
28
29 std::cout
<<"al opengl version: "
30 << std::hex
<< al_get_opengl_version() << std::endl
;
31
32 std::cout
<< "disp options: OPENGL_MAJOR = "
33 << al_get_display_option(display, ALLEGRO_OPENGL_MAJOR_VERSION
) << ", "
34 << "OPENGL_MINOR = "
35 << al_get_display_option(display, ALLEGRO_OPENGL_MINOR_VERSION
) << "\n";
36
37 return;
38}