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| Restarting display to change multisampling has effect on vsync |
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kovarex
Member #14,203
April 2012
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Hello, I didn't want to be like those "lame" games that said: "You have to restart the game if you want to change this option" So when the user changes the multisampling option, I destroy all bitmaps, fonts and display and create it again: Shut down: al_destroy_font(this->font); al_destroy_font(this->itemCountFont); al_shutdown_font_addon(); al_shutdown_ttf_addon(); al_shutdown_primitives_addon(); al_shutdown_image_addon(); al_destroy_display(this->display); and create it again: 1 if (!al_init())
2 throw std::runtime_error("failed to initialize allegro!");
3 al_set_new_display_flags(ALLEGRO_RESIZABLE);
4 al_set_new_display_option(ALLEGRO_VSYNC, 1, ALLEGRO_SUGGEST);
5 if (global->graphicsSettings->getMultisamplingLevel() != 0)
6 {
7 al_set_new_bitmap_flags(ALLEGRO_MIN_LINEAR | ALLEGRO_MAG_LINEAR | ALLEGRO_VIDEO_BITMAP);
8 al_set_new_display_option(ALLEGRO_SAMPLE_BUFFERS, 1, ALLEGRO_SUGGEST);
9 al_set_new_display_option(ALLEGRO_SAMPLES, global->graphicsSettings->getMultisamplingLevel(), ALLEGRO_SUGGEST);
10 }
11 else
12 {
13 al_set_new_bitmap_flags(ALLEGRO_VIDEO_BITMAP);
14 al_set_new_display_option(ALLEGRO_SAMPLE_BUFFERS, 0, ALLEGRO_SUGGEST);
15 al_set_new_display_option(ALLEGRO_SAMPLES, 0, ALLEGRO_SUGGEST);
16 }
17
18 al_set_new_window_position(global->properties.get<int>("screen.x", 100),
19 global->properties.get<int>("screen.y", 100));
20
21 this->display = al_create_display(global->properties.get<int>("screen.width", 800),
22 global->properties.get<int>("screen.height", 600));
23 if (!this->display)
24 throw std::runtime_error("failed to create display!");
25
26 if (!al_init_image_addon())
27 throw std::runtime_error("Failed to initialize al_init_image_addon!");
28 if (!al_install_keyboard())
29 throw std::runtime_error("failed to initialize the keyboard!");
30 if (!al_install_mouse())
31 throw std::runtime_error("failed to initialize the mouse!");
32 al_init_font_addon();
33 if (!al_init_ttf_addon())
34 throw std::runtime_error("failed to initialize the ttf addon!");
35 this->font = al_load_ttf_font((global->resourcePath / "cm_ss_2012.ttf").string().c_str(), 22, ALLEGRO_TTF_RENDER_BORDER);
36 if (!Display::font)
37 throw std::runtime_error("Could not load 'cm_ss_2012.ttf'.");
38 al_set_ttf_border(this->font, 1, al_map_rgb(0, 0, 100));
39 Display::itemCountFont = al_load_ttf_font((global->resourcePath / "cm_ss_2012.ttf").string().c_str(), 16, ALLEGRO_TTF_RENDER_BORDER);
40 if (!Display::itemCountFont)
41 throw std::runtime_error("Could not load 'cm_ss_2012.ttf'.");
42 al_set_ttf_border_color(this->itemCountFont, al_map_rgb(60, 60, 60));
43 if (!al_init_primitives_addon())
44 throw std::runtime_error("failed to load primitives addon!");
45 if (!al_install_audio())
46 throw std::runtime_error("Failed to install audio!");
47 if (!al_init_acodec_addon())
48 throw std::runtime_error("Failed to initialize audio codecs!");
49 if (!al_reserve_samples(50))
50 throw std::runtime_error("Failed to reserve samples!");
(I hope that calling something even when it wasn't shut down, like al_init, or al_install_audio isn't problem) Anyway, when I change the multisampling option and restart graphics this way, everything works, just the VSYNC works on 1/2 of normal speed (30 fps instead of 60) Any idea why is this happening? PS. I'm making sure that the reason isn't performance, the game spends 10% of available time in the game loop rest in waiting for vsync. www.factorio.com - a factory building game. |
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