makeacol(3alleg4)

💖 makeacol — the Allegro manual, but make it cute 💖

okay so bestie, we're in the Allegro manual, 3alleg4 section, and today's main character is makeacol (and its lil sibling makeacol_depth). they convert RGBA colors into display dependent pixel formats. that's the whole vibe. 🎀

✨ NAME ✨

makeacol, makeacol_depth — converts RGBA colors into display dependent pixel formats. Allegro game programming library.

🌸 SYNOPSIS 🌸

#include <allegro.h>

int makeacol(int r, int g, int b, int a);

int makeacol_depth(int color_depth, int r, int g, int b, int a);

🦋 DESCRIPTION 🦋

so these two convert RGBA colors into display dependent pixel formats. 💅

here's the tea: in anything less than a 32-bit mode, these are literally the same as calling makecol() or makecol_depth(). same thing, no notes. but — and this is the iconic part — by using these routines it is possible to create 32-bit color values that contain a true 8 bit alpha channel along with the red, green, and blue components. so like, a real alpha channel, not a vibe. ✨

⚠️ okay important, bestie: you should only use RGBA format colors as the input to draw_trans_sprite() or draw_trans_rle_sprite() after calling set_alpha_blender(), rather than drawing them directly to the screen. do not just yeet them at the screen. that's not the move. 😭

👑 RETURN VALUE 👑

returns the requested RGBA quadruplet. that's it, that's the whole thing. she delivers. 🫶

🌈 SEE ALSO 🌈

• makecol(3alleg4)
• makecol_depth(3alleg4)
• set_alpha_blender(3alleg4)
• set_write_alpha_blender(3alleg4)
• exrotscl(3alleg4)

Allegro version 4.4.3 💖 and yeah, that's the page — makeacol(3alleg4) said what she said. go make some 32-bit alpha magic, bestie, ily. 🧚✨