al_draw_vertex_buffer(3alleg5)

💅 al_draw_vertex_buffer 💅

okay bestie, welcome to the Allegro 5 API corner of the Allegro reference manual — this is the page for al_draw_vertex_buffer, and yes she eats. let's get into it ✨

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✨ SYNOPSIS ✨

#include <allegro5/allegro_primitives.h>

int al_draw_vertex_buffer(ALLEGRO_VERTEX_BUFFER* vertex_buffer,
   ALLEGRO_BITMAP* texture, int start, int end, int type)

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🦋 DESCRIPTION 🦋

So what she does is: she draws a subset of the vertex buffer you hand her. Not the whole thing, just a lil slice. cute, right?

two rules though, and I need you to hear me:

• the vertex buffer must not be locked. locked buffer = no draw, periodt.
• and if you're drawing onto memory bitmaps, or using memory bitmap textures, the vertex buffer has to support reading — which means it must have been created with ALLEGRO_PRIM_BUFFER_READWRITE. no read, no draw. that's just the vibe check.

🌸 Parameters 🌸

• vertex_buffer — the vertex buffer you wanna draw, babe. that's the one.
• texture — the texture to use. pass NULL if you want to rock only color shaded primitives and no texture at all.
• start — the start index of the subset of the vertex buffer you're drawing.
• end — one past the last index of the subset you're drawing. yes, one past. she's exclusive at the top end, that's her thing.
• type — a member of the ALLEGRO_PRIM_TYPE(3alleg5) enumeration, telling her exactly what kind of primitive to draw.

Returns: the number of primitives drawn 🎀

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⭐ SINCE ⭐

5.1.3 — she's been here a minute, an icon of the era 👑

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🫶 SEE ALSO 🫶

• ALLEGRO_VERTEX_BUFFER(3alleg5)
• ALLEGRO_PRIM_TYPE(3alleg5)

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and that's the whole page, bestie 💖 straight from the Allegro reference manual, the one and only source for al_draw_vertex_buffer(3alleg5) — go forth and draw your lil subsets, you got this 🦋✨