al_lock_vertex_buffer(3) | al_lock_vertex_buffer(3) |
NAME
al_lock_vertex_buffer - Allegro 5 API
SYNOPSIS
-
#include <allegro5/allegro_primitives.h> void* al_lock_vertex_buffer(ALLEGRO_VERTEX_BUFFER* buffer, int offset, int length, int flags)
DESCRIPTION
Locks a vertex buffer so you can access its data. Will return NULL if the parameters are invalid, if reading is requested from a write only buffer, or if the buffer is already locked.
Parameters:
- •
- buffer - Vertex buffer to lock
- •
- offset - Vertex index of the start of the locked range
- •
- length - How many vertices to lock
- •
- flags - ALLEGRO_LOCK_READONLY, ALLEGRO_LOCK_WRITEONLY or ALLEGRO_LOCK_READWRITE
SINCE
5.1.3
SEE ALSO
ALLEGRO_VERTEX_BUFFER(3), al_unlock_vertex_buffer(3)
Allegro reference manual |