AL_UPDATE_DISPLAY_REGION(3)

okay bestie, welcome to the al_update_display_region(3) page from the Library Functions Manual — Allegro 5 API, full Allegro reference manual energy, all of it. Let’s get into it 🫶

💖 NAME 💖

al_update_display_region — Allegro 5 API. That’s the whole name moment, no cap ✨

✨ SYNOPSIS ✨

#include <allegro5/allegro.h>

void al_update_display_region(int x, int y, int width, int height)

🦋 DESCRIPTION 🦋

Okay so picture al_flip_display(3) but make it do a targeted update: al_update_display_region does the same thing as al_flip_display(3), except it tries to update only the region you specify with x, y, width, and height. 💅

Here’s the tea: with many drivers this is not possible, but for some drivers it can improve performance. If this is not supported, the function falls back to the behavior of al_flip_display(3). No dramatic failure, just plan B 🫶

You can query support for this function using al_get_display_option(display, ALLEGRO_UPDATE_DISPLAY_REGION). That’s the vibe check ✅

🔥 SEE ALSO 🔥

• al_flip_display(3)
• al_get_display_option(3)

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okay that’s the page, bestie 🫶 This one’s footer situation is the Allegro reference manual and al_update_display_region(3); there’s no date printed in the footer on this page, so I’m not inventing one — timeless icon behavior 💅✨