POLYTYPE_GCOL(3)

📦 version 4.4.3.1, in fedora 43, fedora 44

💖 POLYTYPE_GCOL(3) 💖

okay bestie, so this is a page straight out of the Allegro manual — the game programming library that lowkey carried a whole era of gamedev 🎀 grab a snack, we're learning a polygon rendering mode.

✨ NAME ✨

POLYTYPE_GCOL — a polygon rendering mode type from the Allegro game programming library. that's it, that's the name, she's serving label energy 💅

🌸 SYNOPSIS 🌸

#include <allegro.h>

#define POLYTYPE_GCOL

yes bestie, it's a #define. no arguments, no drama, just a vibe ✨

🦋 DESCRIPTION 🦋

so POLYTYPE_GCOL is a single-color gouraud shaded polygon. okay so what does that actually mean — the color for each vertex gets taken from the c value, and then it's interpolated across the polygon. smooth lil color blend, chef's kiss 😌✨

it's very fast, which is iconic of it honestly. but here's the catch, and I need you to hear me on this one:

in 256-color modes, this only works if your palette contains a smooth gradient between the colors. no gradient, no slay. that's just how it is 💀

and in truecolor modes? it interprets the color as a packed, display-format value — the kind produced by the makecol() function. so that's the move you want, iykyk 💖

👑 SEE ALSO 👑

go read those next bestie, they're literally all part of the same friend group 🫶

kisses, this was Allegro version 4.4.3 💅✨ mwah, go render something gorgeous, no cap 🎀🦋💖

📦 where this page comes from