al_lock_index_buffer(3alleg5)

💖 al_lock_index_buffer 💖

hey bestie!! so this is a page straight out of the Allegro 5 API manual, and today's main character is al_lock_index_buffer. she's giving gatekeeper energy but in a good way — she opens the door to your index buffer's data. 🔑

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✨ NAME ✨

al_lock_index_buffer — the Allegro 5 API function that lets you get in there and touch your index buffer's data 💅

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🌸 SYNOPSIS 🌸

#include <allegro5/allegro_primitives.h>

void* al_lock_index_buffer(ALLEGRO_INDEX_BUFFER* buffer, int offset,
    int length, int flags)

yes queen, that's the whole signature, copy it exactly, no cap. ✨

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🦋 DESCRIPTION 🦋

okay so. locks a index buffer so you can access its data. that's the whole vibe. it's like putting a lil "occupied 🚫" sign on it so nobody else messes with it while you're in there doing your thing.

and the way that she'll return NULL — literally the void, the nothing, the ghosting 💀 — happens in exactly three situations:

• when the parameters are invalid 🙈
• when reading is requested from a write only buffer (bestie you can't read what was never meant to be read, that's not your lane) 😭
• when the buffer is already locked (it's taken!! back off!!) 🔒

🎀 Parameters 🎀

• buffer — the index buffer you wanna lock 💜
• offset — element index of the start of the locked range 📍
• length — how many indices to lock 🔢
• flags — one of these three icons, pick wisely:
  • ALLEGRO_LOCK_READONLY
  • ALLEGRO_LOCK_WRITEONLY
  • ALLEGRO_LOCK_READWRITE

choose your fighter, but like, literally, one of these three. ⭐

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⭐ SINCE ⭐

5.1.8 — been iconic since day one (day one being 5.1.8). 👑

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🌈 SEE ALSO 🌈

• ALLEGRO_INDEX_BUFFER(3alleg5)
• al_unlock_index_buffer(3alleg5)

go read those too, they're the supporting cast and they ate. 🫶

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and that's the whole page!! mwah 💋 this was the Allegro reference manual, covering al_lock_index_buffer(3alleg5) — sending you off with love, stay locked (the good kind), and don't forget to unlock when you're done bestie!! 🧚✨🎀🍓💖