exupdate(3alleg4)

💖 exupdate — Allegro manual, section 3 💖

okay bestie, sit down, hydrate, and let me tell you about exupdate from the Allegro game programming library. this is a manual page for section 3, and it's genuinely so fun, i'm obsessed. 🦋

✨ NAME ✨

exupdate — supporting different screen update methods in a single program. Allegro game programming library. periodt. 💅

🌸 SYNOPSIS 🌸

#include <allegro.h>

Example exupdate

like. that's it. that's the whole thing. short and iconic. 👑

💫 DESCRIPTION 💫

okay so this program is literally a demo of how to support double buffering, page flipping, and triple buffering as options within a single program — yes, all in one, no cap — and also how to make things run at a constant rate no matter what the speed of your computer is. the way that your machine's speed just doesn't matter? iconic. ✨

🙈 heads up: you have to run this example from the command line, bestie. no double-clicking your way out of this one.

you have to pass as the first parameter a number that represents the type of video update you want:

1. 1 — double buffering with memory bitmaps
2. 2 — page flipping
3. 3 — triple buffering
4. 4 — double buffering with system bitmaps

after this, a dialog lets you select a screen resolution 🎀 (yes, a whole dialog, it's giving very much "choose your own adventure"), and finally you will see a kaleidoscopic animation, along with a frames per second counter on the top left of the screen. fps counter in the corner? main character energy fr fr. 🌈

🫶 SEE ALSO 🫶

• BITMAP(3alleg4)
• END_OF_FUNCTION(3alleg4)
• END_OF_MAIN(3alleg4)
• LOCK_FUNCTION(3alleg4)
• LOCK_VARIABLE(3alleg4)
• PALETTE(3alleg4)
• SCREEN_H(3alleg4)
• SCREEN_W(3alleg4)
• acquire_bitmap(3alleg4)
• allegro_error(3alleg4)
• allegro_init(3alleg4)
• allegro_message(3alleg4)
• bitmap_color_depth(3alleg4)
• blit(3alleg4)
• clear_bitmap(3alleg4)
• create_bitmap(3alleg4)
• create_system_bitmap(3alleg4)
• create_video_bitmap(3alleg4)
• desktop_palette(3alleg4)
• destroy_bitmap(3alleg4)
• enable_triple_buffer(3alleg4)
• fixcos(3alleg4)
• fixed(3alleg4)
• fixmul(3alleg4)
• fixsin(3alleg4)
• fixtoi(3alleg4)
• font(3alleg4)
• ftofix(3alleg4)
• generate_332_palette(3alleg4)
• gfx_capabilities(3alleg4)
• gfx_mode_select_ex(3alleg4)
• install_int_ex(3alleg4)
• install_keyboard(3alleg4)
• install_mouse(3alleg4)
• install_timer(3alleg4)
• keypressed(3alleg4)
• line(3alleg4)
• makecol(3alleg4)
• poll_scroll(3alleg4)
• release_bitmap(3alleg4)
• request_video_bitmap(3alleg4)
• screen(3alleg4)
• set_color_depth(3alleg4)
• set_gfx_mode(3alleg4)
• set_palette(3alleg4)
• show_video_bitmap(3alleg4)
• textout_ex(3alleg4)
• textprintf_ex(3alleg4)
• triangle(3alleg4)
• vsync(3alleg4)
• xor_mode(3alleg4)

and that's the whole page, bestie. this one comes to you from Allegro, version 4.4.3, and the manual page itself is exupdate(3alleg4) — you're welcome, go forth and triple buffer responsibly 💜🧚‍♀️