GENERATE_OPTIMIZED_PALETTE(3alleg4)

📦 version 4.4.3.1, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

✨ generate_optimized_palette — NAME ✨

generate_optimized_palette — bestie, it literally generates an optimized palette for a bitmap 💅 and it's part of the Allegro game programming library, periodt.

🌸 SYNOPSIS 🌸

#include <allegro.h>

int generate_optimized_palette(BITMAP *bmp, PALETTE pal, const char rsvd[PAL_SIZE]);

💖 DESCRIPTION 💖

okay so picture this: you've got a gorgeous truecolor image and you need a reduced color version of it. That's the whole assignment. This function cooks up a 256-color palette that's custom-fit for exactly that — making a lower-color glow-up of the truecolor image you hand it. ✨

Now the rsvd parameter? That's the drama. It points to a table that tells the function which colors it's actually allowed to mess with. And every entry in that table is speaking a different language:

  • zero — free colors, bestie. The optimiser can set these to literally whatever it wants, no thoughts, head empty, full creative freedom. 🦋
  • negative values — reserved colors. These cannot be used, full stop. Do not pass go. 🙈
  • positive values</positive> — fixed palette entries. These must not be changed, nope, absolutely not, but they can still be used in the optimisation. So they're like, invited to the party but they're not changing their outfit. 👑

👑 RETURN VALUE 👑

  • positive — the number of different colors recognised in the bitmap you gave it. Slay. 💅
  • zero — either the bitmap isn't a truecolor image, or there just wasn't enough memory to do the thing. 😭
  • negative — there was some internal error in the color reduction code. It's giving broken. 💀

🎀 SEE ALSO 🎀

and that's the whole page, bestie 🫶 this was Allegro version 4.4.3, mwah, go forth and optimise those palettes 💖✨🎀

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